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Installation Instructions
*************************
Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005,
2006, 2007 Free Software Foundation, Inc.
This file is free documentation; the Free Software Foundation gives
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Basic Installation
==================
Briefly, the shell commands `./configure; make; make install' should
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Running `configure' might take a while. While running, it prints
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Compilers and Options
=====================
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You can give `configure' initial values for configuration parameters
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./configure CC=c99 CFLAGS=-g LIBS=-lposix
*Note Defining Variables::, for more details.
Compiling For Multiple Architectures
====================================
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Installation Names
==================
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Optional Features
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Specifying the System Type
==========================
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See the file `config.sub' for the possible values of each field. If
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Sharing Defaults
================
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values for variables like `CC', `cache_file', and `prefix'.
`configure' looks for `PREFIX/share/config.site' if it exists, then
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Design
========
After cgroup system has taken shape, its time to have some basic tools
in user space which can enable a user to use the resource management
functionality effictively.
One of the needed functionality is rule based placement of a task. In general,
there can be either uid or gid or exec based rules. Admin/root will
control/enforce uid/gid based rules and exec based rules can be defined by
user in a config file residing in user's home dir and fully controlled by user.
uid/gid based rules will be defined in /etc/cgrules.conf config file and
this file will be managed by root.
Basic idea is that to begin with provide facility to implement rules
based on uid and gid. So a hierarchy might look like as follows.
/mnt/cgroup
| |
gid1 gid2
| |
uid1 uid2
| |
proj1 proj2
Admin will write rules to control the resources among users. Then users
can manage their own cgroup at their own (proj1 and proj2) and control
the resources as they want.
Following are the few methods using which tasks can be placed in right
cgroups.
- Use pam_cgroup PAM plugin which will make sure users are placed in right
cgroup at login time and any tasks launch after login, will continue to run
in user's cgroup.
- Use command line tool "cgexec" to launch the task in right cgroup.
- Modify the program and use libcgroup provided APIs for placing a task
in right cgroup before doing exec().
- Use "cgclassify" tool to classify a already running task.
- May be, a user space daemon can also be implemented which will listen to
kernel events and place the task in right group based on the rules.
This method involves few concerns.
- Reliability of netlink socket. Messages can be dropped.
- Change the netlink with a cgroup controller which exports the
events.
- Delay incurred since the event took place and task was actually placed
in right cgroup.
- daemon will interfere with container's tasks which is not desired.
HOWTO
=====
Section 1:
----------
To use "cgexec" to place the task in right cgroup.
- make cgexec
- Run a task using cgexec. Following is the cgexec syntax.
cgexec [-g <list of controllers>:<relative path to cgroup>] command [arguments]
Note: Cgroup controllers and path are optional. If user does not know the
right cgroup, cgexec will automatically place the task in right
cgroup based on /etc/cgrules.conf
Example:
cgexec -g *:test1 ls
cgexec -g cpu,memory:test1 ls -l
cgexec -g cpu,memory:test1 -g swap:test2 ls -l
Section 2
---------
To use "cgclassify" to place task in right cgroup.
- make cgclassify
- Pick a task's pid to be classified, and run
cgclassify <list of pids>
Example:
--------
cgclassify 2140 4325
Note: After classification check out whether tasks 2140 and 4325
are in the right cgroup or not (Based on rules in /etc/cgrules.conf)
Section 3:
----------
To use a pam plugin which will automatically place the task in right
cgroup upon login.
- Build pam_cgroup.so
make pam_cgroup.so
- Copy pam_cgroup.so to /lib/security/
- Edit /etc/pam.d/su to make use of pam_cgroup.so session module upon
execution of su.
example:
Add following line at the end of /etc/pam.d/su file
session optional pam_cgroup.so
- Now launch a shell for a user "xyz" using su and the resulting shell
should be running in the cgroup designated for the user as specified
by cgrules.conf
ex. "su test1"
Try similar things with other services like sshd.
Note: pam_cgroup.so moves the service providing process in the right cgroup
and not the process which will be launched later. Due to parent child
relationship, yet to be forked/execed process will launch in right
group.
Ex. Lets say user root does "su test1". In this case process "su" is the
one providing service (launching a shell) for user "test1". pam_cgroup.so
will move process "su" to the user "test1"'s cgroup (Decided by the uid
and gid of "test1"). Now once su forks/execs a shell for user test1,
final shell is effectively running in the cgroup it should have been
running based on /etc/cgrules.conf for user test1.
Section 4:
----------
To use cgrulesengd which will move a task to right cgroup based on
rules in /etc/cgrules.conf do following.
- build and install latest libcgroup.so
- build cgrulesengd
make cgrulesengd
- specify some uid/gid based rules in /etc/cgrules.conf
- Mount some controllers and create an hierarchy of cgroups (matching
your rules).
- Run cgrulesengd.
- ./cgrulesengd
- Launch some task or login as a user to the sytem. Daemon should automatically
place the task in right cgroup.
FAQ
===
Q. Why admin should not control "exec" based rules.
A. Unix file system provides access control only based on uid/gid. So
even if admin starts putting tasks based on uid/gid, it can't enforce
it. For example, consider following scenario.
Lets say an admin creates following cgroup hierarchy.
/container
| |
database browser
| | | |
user1 user2 user1 user2
Now admin wants to run all the database jobs under /container/database/
and all the firefox jobs under /container/browser/. Based on which user
launched it, jobs should go in either user1 or user2 dir.
Now assume that database subdir has to more cpu resources as compared to
browser subdir. Then a user, say user2, can always move his browser job
also to /container/database/user2 dir to get more cpu resources and
admin will not be able to control that.
[Note: user2 will control what tasks can be added in /container/database/user2
and will contol what further subdirs can be created under user2 dir. Root
should not restrict the control to root only for practical purposes. Its
something like that till /container/databse, admin controls the resources
and below that how resources are further subdivided among various projects
should be controlled by respective user].
In the light of above, it seems to make more sense that admin should enforce
rules only based on uid and gid. Probably later we can have a per user exec
based rules config file (~/.cgrules.conf), which can be parsed by cgrulesd
and then jobs launched by user will be placed in right cgroup based on
combination of rules in /etc/cgrules.conf and ~/cgrules.conf.

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DESCRIPTION
===========
The CGroup Rules Engine Daemon is a tool that will automatically place tasks
into the correct cgroup based on UID/GID events from the kernel. It will not
automatically classify tasks that are already running, but it will classify
any new tasks, and any tasks which change their UID/GID. Note that we use
the euid and egid, not the ruid and rgid.
Unlike other tools, cgrulesengd caches the rules configuration in a data
structure (it's actually just a FIFO linked list) so that it doesn't need to
parse the configuration file more than once. This should be much faster than
parsing the rules for each UID/GID event. Eventually, this caching logic
should be part of libcgroup, so that any other program can take advantage of it
(and so that all programs are using the same table). The configuration can
be reloaded without stopping the daemon (more information below).
WHY A DAEMON?
=============
A daemon is easy to use, and allows an administrator to ensure that all tasks
are classified into the correct cgroups without constantly monitoring the
system. The daemon is transparent to the users, and does not require any
modifications to existing userspace programs. Finally, the daemon can be
started and stopped at any time, including at boot time with other services.
Thus, sytem administrators can decide not to use the daemon if they choose.
Most importantly, some programs create new users and/or run scripts,
threads, etc. as those users using suexec(). This call does not go through
PAM, so these scripts would continue running in the same cgroup as the parent
program. This behavior is likely not ideal, and the daemon would solve this
problem.
Apache does this. Apache creates a user called 'apache' and uses setuid() to
launch tasks as that user. This does not go through PAM, so without a daemon,
these tasks would continue to run in the 'root' cgroup rather than in the
'apache' or 'webserver' cgroup. The daemon fixes this problem by catching the
setuid() call and moving the tasks into the correct cgroup.
We would ask Apache to modify their software to interface with libcgroup, but
this solution is less than optimal because a lot of userspace software would
have to be changed, and some authors might intentionally not interact with
libcgroup, which could create an exploit. The daemon is a simple, transparent
solution.
USING THE DAEMON
================
The daemon can be used as a service with the cgred script, which is shipped
as scripts/init.d/cgred. This script should be installed as /etc/init.d/cgred
and used like any other service. To start the daemon,
/etc/init.d/cgred start
To stop it,
/etc/init.d/cgred stop
The restart (stop,start), condrestart (same as restart, but only if the daemon
was already started), and status (print whether the daemon is started or
stopped) commands are also supported. An additional command, "reload", allows
you to reload the configuration file without stopping the daemon.
/etc/init.d/cgred reload
The cgred script automatically loads configuration from /etc/sysconfig/cgred.conf,
which is shipped as samples/cgred.conf. See that file for more information.
If you choose not to run the daemon as a service, the following options are
currently supported:
--nodaemon Do not run as a daemon
--nolog Write log output to stdout instead of a log file
--config [FILE] Read rules configuration from FILE instead of
/etc/cgrules.conf
You can ask the daemon to reload the rules configuration by sending it SIGUSR2.
The easiest way to do this is with the 'kill' command:
kill -s SIGUSR2 [PID]
You can ask the daemon to reload the templates configuration by sending it
SIGUSR1. The easiest way to do this is with the 'kill' command:
kill -s SIGUSR1 [PID]
TESTING
=======
The program setuid (found in tests/setuid.c) can help you test the daemon. By
default, this program attempts to change its UID to root and then idles until
you kill it. You can change the default behavior to use a different UID, or
you can uncomment the second block of code to instead attempt to change the
GID.
In order to make sure that everything works, I used the following rules:
sjo cpu default
cgtest cpu cgtest
% memory default
@cgroup cpu,memory cgtest
peter cpu test1
% memory test2
@root * default
* * default
The users 'sjo' and 'cgtest' were normal users. 'peter' is not a user on the
system. The group 'cgroup' is a group containing sjo,root,cgtest as members,
and the group 'root' contains only root. The cgroups 'default' and 'cgtest'
exist, while 'test1' and 'test2' do not. Currently, the daemon does not check
for the existance of 'test1', though this would be easier to do once the
parsing and caching logic is moved into libcgroup.
I ran the following tests, all of which were successful:
- set UID to sjo (should move cpu controller into default)
- set UID to root (should move cpu,memory controllers into cgtest)
- set UID to cgtest (should move cpu controller into cgtest, memory
controller into default)
- set GID to root (should move all controllers into default)
- set GID to cgroup (should move cpu, memory into cgtest)
- set GID to users (should move all controllers into default)
The parsing logic will skip the 'peter' rule as well as its multi-line
components (in this case "% memory test2"), because the user does not exist.
This should work for group rules, too. Attempting to setuid() or setgid() to a
user/group that doesn't exist will just return an error and not generate a
kernel event of the PROC_EVENT_UID or PROC_EVENT_GID type, so the daemon won't
do anything for it.
CONCERNS/ISSUES
===============
- Netlink can be unreliable, and the daemon might miss an event if the buffer
is full. One possible solution is to have one or two files that the kernel
can queue UID/GID changes in, and have the daemon read those files whenever
they are updated. From testing, this does not actually appear to be a real
problem, but it could become one with faster machines.
- The daemon does not care for namespaces at all, which can cause conflicts
with containers. If a user places his tasks into exec-based cgroups (such
as 'network' and 'development'), the daemon will not realize this and will
simply place them into the user's cgroup (so, sjo/ instead of sjo/network/).
CHANGELOG
=========
V9:
- Updated documentation, because it was very old and incorrect.
- Reverted the changes to cgexec and cgclassify.
- New API function: cgroup_change_cgroup_uid_gid_flags().
- Deprecated cgroup_change_cgroup_uid_gid().
- Rewrote some of the rule matching and execution logic in api.c to be
faster, and easier to read.
- Changes all negative return values to positive values. As a side effect,
cgroup_parse_rules() now returns -1 when we get a match and we are using
non-cached rules.
- Changes CGROUP_FUSECACHE to CGFLAG_USECACHE.
- Flags are now enumerated (cgflags), instead of #defines.
V8:
- Moved the event-handling logic back into the daemon, where it should be.
- Changed cgroup_parse_rules() to work with cached rules or non-cached rules.
The other parsing function is no longer needed, and should be deprecated.
- Non-cached rules now work with the same structs as cached rules.
- Modified cgroup_change_cgroup_uid_gid() with a new 'flags' parameter.
Currently, the only flag is "CGROUP_FUSECACHE" to use the cached rules logic
(or not).
- Added cgroup_rules_loaded() boolean, to check whether the cached rules have
been loaded yet, and cgroup_init_rules_cache() to load them.
- Modified cgexec and cgclassify to work with the new
cgroup_change_cgroup_uid_gid().
V7:
- Moved parsing and caching logic into libcgroup.
- Added locking mechanisms around the list of rules.
- Cleaned up #includes in cgrulesegnd.[h,c].
- Added notification if netlink receive queue overflows.
- Added logic to catch SIGINT in addition to SIGTERM.
- New API functions:
- cgroup_free_rule(struct cgroup_rule*)
- cgroup_free_rule_list(struct cgroup_rule_list*)
- cgroup_parse_rules(void)
- cgroup_print_rules_config(FILE*)
- cgroup_reload_cached_rules(void)
- cgroup_change_cgroup_event(struct proc_event*, int, FILE*)
V6:
- Wrote new parsing logic, which is cleaner and simpler.
- Added cgred script to enable using the daemon as a service.
- Wrote caching logic to cache rules table.
- Added the ability to force a reload of the rules table with SIGUSR2 signal.
- Added two structures to libcgroup: cgre_rule and cgre_rules_list
- New API function: cgroup_reload_cached_rules, which reloads the rules table.
- Added logging capabilities (default log is /root/cgrulesengd.conf)
TODO
====
- Find a way to replace Netlink, or at least clean up that code.
- Find a solution to the namespace problem.

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Integration with systemd
========================
systemd is a system and service manager for Linux, compatible with SysV
and LSB init scripts. systemd heavily uses control groups to manage and control
services.
Most of the libcgroup tools and APIs can be safely used on systems with systemd
without any problems. This document attempts to describe the configuration of
systemd and libcgroup so they can safely co-exist and mutually benefit each
other.
References
==========
[1] http://www.freedesktop.org/wiki/Software/systemd
Systemd home page.
[2] http://www.freedesktop.org/wiki/Software/systemd/PaxControlGroups
This is the most useful document describing systemd expectations on applications
(incl. libcgroup tools).
Compilation
===========
As stated in [2], libcgroup should not interact with the 'name=systemd'
hierarchy. Compile libcgroup with the --enable-opaque-hierarchy configure option
to do so:
./configure --enable-opaque-hierarchy=name=systemd
Consequently, the 'name=systemd' hierarchy will not be visible to libcgroup and
all of its tools. For example, the lscgroup command will not list systemd
cgroups and the cgclear command will not remove them.
Start-up and services
====================
Systemd automatically mounts all available controllers on system boot ('cpu' and
'cpuacct' together in one hierarchy by default) and can automatically put
service processes into control groups with configured parameters — by default,
each service is automatically put into the 'cpu,cpuacct:/system/$service_name'
control group. The System Administrator has full control of parameters in each
control group and of which controllers are used. Consult systemd
documentation, mainly systemd.conf(5) and systemd.exec(5) man pages, for
details.
In the vast majority of use cases, this behavior is sufficient and libcgroup
does not need to be used.
For specific use cases, e.g. when a different tree of control groups is needed,
libcgroup provides cgconfig service. This service can create arbitrary control
group hierarchies. In this case, follow these steps:
1. Set 'DefaultControllers=' in /etc/systemd/system.conf so that systemd does
not create control groups for services automatically.
2. Prepare /etc/cgconfig.conf and enable the cgconfig service. The service will
parse the /etc/cgconfig.conf file during machine boot and create all control
groups which are defined in it. The service automatically sets '+t' ("sticky")
bit on the tasks files as recommended in [2].
3. For each service that should start in a specific control group, add the
following lines into its unit file:
After=cgconfig.service
ControlGroup=<name of the control group(s)>
This ensures the service is started only after cgconfig creates the necessary
hierarchy for it. It also tells systemd which control group it should use to
start the service.

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/* config.h.in. Generated from configure.in by autoheader. */
/* Cgrulesengd socket path */
#undef CGRULE_CGRED_SOCKET_PATH
/* Define to 1 if your system has a working `chown' function. */
#undef HAVE_CHOWN
/* Define to 1 if you have the <dirent.h> header file, and it defines `DIR'.
*/
#undef HAVE_DIRENT_H
/* Define to 1 if you have the <dlfcn.h> header file. */
#undef HAVE_DLFCN_H
/* Define to 1 if you have the `getmntent' function. */
#undef HAVE_GETMNTENT
/* Define to 1 if you have the `hasmntopt' function. */
#undef HAVE_HASMNTOPT
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
/* Define to 1 if you have the <limits.h> header file. */
#undef HAVE_LIMITS_H
/* Define to 1 if your system has a GNU libc compatible `malloc' function, and
to 0 otherwise. */
#undef HAVE_MALLOC
/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H
/* Define to 1 if you have the `memset' function. */
#undef HAVE_MEMSET
/* Define to 1 if you have the `mkdir' function. */
#undef HAVE_MKDIR
/* Define to 1 if you have the <mntent.h> header file. */
#undef HAVE_MNTENT_H
/* Define to 1 if you have the <ndir.h> header file, and it defines `DIR'. */
#undef HAVE_NDIR_H
/* Define to 1 if your system has a GNU libc compatible `realloc' function,
and to 0 otherwise. */
#undef HAVE_REALLOC
/* Define to 1 if you have the `rmdir' function. */
#undef HAVE_RMDIR
/* Define to 1 if you have the <security/pam_ext.h> header file. */
#undef HAVE_SECURITY_PAM_EXT_H
/* Define to 1 if you have the <security/pam_modules.h> header file. */
#undef HAVE_SECURITY_PAM_MODULES_H
/* Define to 1 if you have the <security/pam_modutil.h> header file. */
#undef HAVE_SECURITY_PAM_MODUTIL_H
/* Define to 1 if `stat' has the bug that it succeeds when given the
zero-length file name argument. */
#undef HAVE_STAT_EMPTY_STRING_BUG
/* Define to 1 if stdbool.h conforms to C99. */
#undef HAVE_STDBOOL_H
/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H
/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define to 1 if you have the `strdup' function. */
#undef HAVE_STRDUP
/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H
/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H
/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
*/
#undef HAVE_SYS_DIR_H
/* Define to 1 if you have the <sys/mount.h> header file. */
#undef HAVE_SYS_MOUNT_H
/* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
*/
#undef HAVE_SYS_NDIR_H
/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H
/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
/* Define to 1 if the system has the type `_Bool'. */
#undef HAVE__BOOL
/* Define to 1 if `lstat' dereferences a symlink specified with a trailing
slash. */
#undef LSTAT_FOLLOWS_SLASHED_SYMLINK
/* Define to the sub-directory in which libtool stores uninstalled libraries.
*/
#undef LT_OBJDIR
/* Define to ignore specific hierarchy. */
#undef OPAQUE_HIERARCHY
/* Name of package */
#undef PACKAGE
/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT
/* Define to the full name of this package. */
#undef PACKAGE_NAME
/* Define to the full name and version of this package. */
#undef PACKAGE_STRING
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
/* Define to the home page for this package. */
#undef PACKAGE_URL
/* Define to the version of this package. */
#undef PACKAGE_VERSION
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
/* Version number of package */
#undef VERSION
/* Define to 1 if `lex' declares `yytext' as a `char *' by default, not a
`char[]'. */
#undef YYTEXT_POINTER
/* Define to empty if `const' does not conform to ANSI C. */
#undef const
/* Define to `int' if <sys/types.h> doesn't define. */
#undef gid_t
/* Define to `__inline__' or `__inline' if that's what the C compiler
calls it, or to nothing if 'inline' is not supported under any name. */
#ifndef __cplusplus
#undef inline
#endif
/* Define to the type of a signed integer type of width exactly 64 bits if
such a type exists and the standard includes do not define it. */
#undef int64_t
/* Define to rpl_malloc if the replacement function should be used. */
#undef malloc
/* Define to `int' if <sys/types.h> does not define. */
#undef pid_t
/* Define to rpl_realloc if the replacement function should be used. */
#undef realloc
/* Define to `int' if <sys/types.h> doesn't define. */
#undef uid_t

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# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
#
# Copyright International Business Machines Corp. 2008
#
# Authors: Balbir Singh <balbir@linux.vnet.ibm.com>
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2.1 of the GNU Lesser General Public License
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
AC_PREREQ(2.61)
# In following section update all occurences of version, including soname
AC_INIT([libcgroup], 0.41)
AM_INIT_AUTOMAKE([foreign dist-bzip2])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
# set library version, soname is libcgroup.so.MAJOR
AC_SUBST(LIBRARY_VERSION_MAJOR, 1)
AC_SUBST(LIBRARY_VERSION_MINOR, 0)
AC_SUBST(LIBRARY_VERSION_RELEASE, 41)
# we do not want static libraries
AC_DISABLE_STATIC
AC_CONFIG_SRCDIR([src])
AC_CONFIG_HEADER([config.h])
AC_ARG_ENABLE([bindings],
[AC_HELP_STRING([--enable-bindings],
[enable python bindings [default=no]])],
[
if test "x$enableval" = xno; then
with_bindings=false
else
with_bindings=true
fi
],
[with_bindings = false])
AM_CONDITIONAL([WITH_BINDINGS], [test x$with_bindings = xtrue])
# Process command line options
AC_ARG_ENABLE([tools],
[AC_HELP_STRING([--enable-tools],
[compile libcgroup tools [default=yes]])],
[
if test "x$enableval" = xno; then
with_tools=false
else
with_tools=true
fi
],
[with_tools=true])
AM_CONDITIONAL([WITH_TOOLS], [test x$with_tools = xtrue])
AC_ARG_ENABLE([pam],
[AC_HELP_STRING([--enable-pam],
[compile libcgroup PAM module [default=yes]])],
[
if test "x$enableval" = xno; then
with_pam=false
else
with_pam=true
fi
],
[with_pam=true])
AM_CONDITIONAL([WITH_PAM], [test x$with_pam = xtrue])
AC_ARG_ENABLE([daemon],
[AC_HELP_STRING([--enable-daemon],
[compile libcgroup daemon [default=yes]])],
[
if test "x$enableval" = xno; then
with_daemon=false
else
with_daemon=true
fi
],
[with_daemon=true])
AM_CONDITIONAL([WITH_DAEMON], [test x$with_daemon = xtrue])
AC_ARG_ENABLE([initscript-install],
[AC_HELP_STRING([--enable-initscript-install],
[install init scripts [default=no]])],
[
if test "x$enableval" = xno; then
with_initscript_install=false
else
with_initscript_install=true
fi
],
[with_initscript_install=false])
AM_CONDITIONAL([WITH_INITSCRIPT_INSTALL], [test x$with_initscript_install = xtrue])
socket_path="/var/run/cgred.socket"
AC_ARG_ENABLE([cgred-socket],
[AC_HELP_STRING([--enable-cgred-socket=PATH],
specify location of cgrulesengd communication socket
(default=/var/run/cgred.socket))],
[
if test "x$enableval" = xno -o "x$enableval" = xyes; then
AC_MSG_ERROR([Provide valid path with --enable-cgred-socket option.])
else
socket_path="$enableval"
fi
], [])
AC_DEFINE_UNQUOTED([CGRULE_CGRED_SOCKET_PATH],"$socket_path", [Cgrulesengd socket path])
pam_module_dir="$libdir/security"
AC_ARG_ENABLE([pam-module-dir],
[AC_HELP_STRING([--enable-pam-module-dir=PATH],
specify location of libcgroup PAM module
(default=$libdir/security))],
[
if test "x$enableval" = xno -o "x$enableval" = xyes; then
AC_MSG_ERROR([Provide valid path with --enable-pam-module-dir option.])
else
pam_module_dir="$enableval"
fi
], [])
AC_SUBST([pamlibdir],"$pam_module_dir")
AC_ARG_ENABLE([opaque-hierarchy],
[AC_HELP_STRING([--enable-opaque-hierarchy=NAME],
[specify name of a hierarchy which libcgroup should ignore, e.g. name=systemd]
(default=none))],
[
if test "x$enableval" = xno -o "x$enableval" = xyes; then
AC_MSG_ERROR([Provide name of a hierarchy.])
else
AC_DEFINE_UNQUOTED([OPAQUE_HIERARCHY], "$enableval",
[Define to ignore specific hierarchy.])
fi
], [])
# Checks for programs.
AC_PROG_CXX
AC_PROG_CC
AC_PROG_YACC
if test "$YACC" = yacc; then
AC_CHECK_PROG([REALLY_YACC], [yacc], [yacc])
if test "$REALLY_YACC" = ""; then
AC_MSG_ERROR([This program cannot be built unless a version of yacc is installed.])
fi
fi
AM_PROG_LEX
if test "$LEX" != flex; then
AC_MSG_ERROR([This program cannot be built unless flex is installed.])
fi
AC_PROG_LIBTOOL
# Checks for header files.
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_CHECK_HEADERS([limits.h mntent.h stdlib.h string.h sys/mount.h unistd.h])
# Checks for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL
AC_C_CONST
AC_TYPE_UID_T
AC_C_INLINE
AC_TYPE_INT64_T
AC_TYPE_PID_T
# Checks for library functions.
AC_FUNC_CHOWN
AC_FUNC_GETMNTENT
AC_FUNC_MALLOC
AC_FUNC_REALLOC
AC_FUNC_STAT
AC_CHECK_FUNCS([getmntent hasmntopt memset mkdir rmdir strdup])
if test x$with_pam = xtrue; then
AC_CHECK_LIB(
[pam],
[pam_syslog],
[
dnl Override the default behavior of AC_CHECK_LIB,
dnl we don't want -lpam in LIBS.
:
],
[AC_MSG_ERROR([Cannot compile PAM module without libpam!])])
AC_CHECK_HEADERS(
[security/pam_modules.h security/pam_modutil.h security/pam_ext.h],
[],
[AC_MSG_ERROR([Cannot compile PAM module without necessary
header files!])])
fi
AC_CONFIG_FILES([Makefile
tests/Makefile
tests/tools/testenv.sh
tests/tools/Makefile
tests/tools/cgconfigparser/Makefile
tests/tools/cgclassify/Makefile
tests/tools/multimount/Makefile
tests/runlibcgrouptest.sh
src/Makefile
src/daemon/Makefile
src/tools/Makefile
src/pam/Makefile
src/bindings/Makefile
scripts/Makefile
scripts/init.d/cgconfig
scripts/init.d/cgred
samples/Makefile
include/Makefile
doc/Makefile
doc/man/Makefile
dist/Makefile
libcgroup.pc])
AC_CONFIG_FILES([dist/libcgroup.spec:dist/libcgroup.spec.in])
CFLAGS="$CFLAGS -Wall"
AC_OUTPUT

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#! /bin/sh
# depcomp - compile a program generating dependencies as side-effects
scriptversion=2013-05-30.07; # UTC
# Copyright (C) 1999-2013 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
case $1 in
'')
echo "$0: No command. Try '$0 --help' for more information." 1>&2
exit 1;
;;
-h | --h*)
cat <<\EOF
Usage: depcomp [--help] [--version] PROGRAM [ARGS]
Run PROGRAMS ARGS to compile a file, generating dependencies
as side-effects.
Environment variables:
depmode Dependency tracking mode.
source Source file read by 'PROGRAMS ARGS'.
object Object file output by 'PROGRAMS ARGS'.
DEPDIR directory where to store dependencies.
depfile Dependency file to output.
tmpdepfile Temporary file to use when outputting dependencies.
libtool Whether libtool is used (yes/no).
Report bugs to <bug-automake@gnu.org>.
EOF
exit $?
;;
-v | --v*)
echo "depcomp $scriptversion"
exit $?
;;
esac
# Get the directory component of the given path, and save it in the
# global variables '$dir'. Note that this directory component will
# be either empty or ending with a '/' character. This is deliberate.
set_dir_from ()
{
case $1 in
*/*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
*) dir=;;
esac
}
# Get the suffix-stripped basename of the given path, and save it the
# global variable '$base'.
set_base_from ()
{
base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
}
# If no dependency file was actually created by the compiler invocation,
# we still have to create a dummy depfile, to avoid errors with the
# Makefile "include basename.Plo" scheme.
make_dummy_depfile ()
{
echo "#dummy" > "$depfile"
}
# Factor out some common post-processing of the generated depfile.
# Requires the auxiliary global variable '$tmpdepfile' to be set.
aix_post_process_depfile ()
{
# If the compiler actually managed to produce a dependency file,
# post-process it.
if test -f "$tmpdepfile"; then
# Each line is of the form 'foo.o: dependency.h'.
# Do two passes, one to just change these to
# $object: dependency.h
# and one to simply output
# dependency.h:
# which is needed to avoid the deleted-header problem.
{ sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
} > "$depfile"
rm -f "$tmpdepfile"
else
make_dummy_depfile
fi
}
# A tabulation character.
tab=' '
# A newline character.
nl='
'
# Character ranges might be problematic outside the C locale.
# These definitions help.
upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
lower=abcdefghijklmnopqrstuvwxyz
digits=0123456789
alpha=${upper}${lower}
if test -z "$depmode" || test -z "$source" || test -z "$object"; then
echo "depcomp: Variables source, object and depmode must be set" 1>&2
exit 1
fi
# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
depfile=${depfile-`echo "$object" |
sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
rm -f "$tmpdepfile"
# Avoid interferences from the environment.
gccflag= dashmflag=
# Some modes work just like other modes, but use different flags. We
# parameterize here, but still list the modes in the big case below,
# to make depend.m4 easier to write. Note that we *cannot* use a case
# here, because this file can only contain one case statement.
if test "$depmode" = hp; then
# HP compiler uses -M and no extra arg.
gccflag=-M
depmode=gcc
fi
if test "$depmode" = dashXmstdout; then
# This is just like dashmstdout with a different argument.
dashmflag=-xM
depmode=dashmstdout
fi
cygpath_u="cygpath -u -f -"
if test "$depmode" = msvcmsys; then
# This is just like msvisualcpp but w/o cygpath translation.
# Just convert the backslash-escaped backslashes to single forward
# slashes to satisfy depend.m4
cygpath_u='sed s,\\\\,/,g'
depmode=msvisualcpp
fi
if test "$depmode" = msvc7msys; then
# This is just like msvc7 but w/o cygpath translation.
# Just convert the backslash-escaped backslashes to single forward
# slashes to satisfy depend.m4
cygpath_u='sed s,\\\\,/,g'
depmode=msvc7
fi
if test "$depmode" = xlc; then
# IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
gccflag=-qmakedep=gcc,-MF
depmode=gcc
fi
case "$depmode" in
gcc3)
## gcc 3 implements dependency tracking that does exactly what
## we want. Yay! Note: for some reason libtool 1.4 doesn't like
## it if -MD -MP comes after the -MF stuff. Hmm.
## Unfortunately, FreeBSD c89 acceptance of flags depends upon
## the command line argument order; so add the flags where they
## appear in depend2.am. Note that the slowdown incurred here
## affects only configure: in makefiles, %FASTDEP% shortcuts this.
for arg
do
case $arg in
-c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
*) set fnord "$@" "$arg" ;;
esac
shift # fnord
shift # $arg
done
"$@"
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
mv "$tmpdepfile" "$depfile"
;;
gcc)
## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
## (see the conditional assignment to $gccflag above).
## There are various ways to get dependency output from gcc. Here's
## why we pick this rather obscure method:
## - Don't want to use -MD because we'd like the dependencies to end
## up in a subdir. Having to rename by hand is ugly.
## (We might end up doing this anyway to support other compilers.)
## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
## -MM, not -M (despite what the docs say). Also, it might not be
## supported by the other compilers which use the 'gcc' depmode.
## - Using -M directly means running the compiler twice (even worse
## than renaming).
if test -z "$gccflag"; then
gccflag=-MD,
fi
"$@" -Wp,"$gccflag$tmpdepfile"
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
echo "$object : \\" > "$depfile"
# The second -e expression handles DOS-style file names with drive
# letters.
sed -e 's/^[^:]*: / /' \
-e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
## This next piece of magic avoids the "deleted header file" problem.
## The problem is that when a header file which appears in a .P file
## is deleted, the dependency causes make to die (because there is
## typically no way to rebuild the header). We avoid this by adding
## dummy dependencies for each header file. Too bad gcc doesn't do
## this for us directly.
## Some versions of gcc put a space before the ':'. On the theory
## that the space means something, we add a space to the output as
## well. hp depmode also adds that space, but also prefixes the VPATH
## to the object. Take care to not repeat it in the output.
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
hp)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
sgi)
if test "$libtool" = yes; then
"$@" "-Wp,-MDupdate,$tmpdepfile"
else
"$@" -MDupdate "$tmpdepfile"
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
echo "$object : \\" > "$depfile"
# Clip off the initial element (the dependent). Don't try to be
# clever and replace this with sed code, as IRIX sed won't handle
# lines with more than a fixed number of characters (4096 in
# IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
# the IRIX cc adds comments like '#:fec' to the end of the
# dependency line.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
| tr "$nl" ' ' >> "$depfile"
echo >> "$depfile"
# The second pass generates a dummy entry for each header file.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
>> "$depfile"
else
make_dummy_depfile
fi
rm -f "$tmpdepfile"
;;
xlc)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
aix)
# The C for AIX Compiler uses -M and outputs the dependencies
# in a .u file. In older versions, this file always lives in the
# current directory. Also, the AIX compiler puts '$object:' at the
# start of each line; $object doesn't have directory information.
# Version 6 uses the directory in both cases.
set_dir_from "$object"
set_base_from "$object"
if test "$libtool" = yes; then
tmpdepfile1=$dir$base.u
tmpdepfile2=$base.u
tmpdepfile3=$dir.libs/$base.u
"$@" -Wc,-M
else
tmpdepfile1=$dir$base.u
tmpdepfile2=$dir$base.u
tmpdepfile3=$dir$base.u
"$@" -M
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
do
test -f "$tmpdepfile" && break
done
aix_post_process_depfile
;;
tcc)
# tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
# FIXME: That version still under development at the moment of writing.
# Make that this statement remains true also for stable, released
# versions.
# It will wrap lines (doesn't matter whether long or short) with a
# trailing '\', as in:
#
# foo.o : \
# foo.c \
# foo.h \
#
# It will put a trailing '\' even on the last line, and will use leading
# spaces rather than leading tabs (at least since its commit 0394caf7
# "Emit spaces for -MD").
"$@" -MD -MF "$tmpdepfile"
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
# Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
# We have to change lines of the first kind to '$object: \'.
sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
# And for each line of the second kind, we have to emit a 'dep.h:'
# dummy dependency, to avoid the deleted-header problem.
sed -n -e 's|^ *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
rm -f "$tmpdepfile"
;;
## The order of this option in the case statement is important, since the
## shell code in configure will try each of these formats in the order
## listed in this file. A plain '-MD' option would be understood by many
## compilers, so we must ensure this comes after the gcc and icc options.
pgcc)
# Portland's C compiler understands '-MD'.
# Will always output deps to 'file.d' where file is the root name of the
# source file under compilation, even if file resides in a subdirectory.
# The object file name does not affect the name of the '.d' file.
# pgcc 10.2 will output
# foo.o: sub/foo.c sub/foo.h
# and will wrap long lines using '\' :
# foo.o: sub/foo.c ... \
# sub/foo.h ... \
# ...
set_dir_from "$object"
# Use the source, not the object, to determine the base name, since
# that's sadly what pgcc will do too.
set_base_from "$source"
tmpdepfile=$base.d
# For projects that build the same source file twice into different object
# files, the pgcc approach of using the *source* file root name can cause
# problems in parallel builds. Use a locking strategy to avoid stomping on
# the same $tmpdepfile.
lockdir=$base.d-lock
trap "
echo '$0: caught signal, cleaning up...' >&2
rmdir '$lockdir'
exit 1
" 1 2 13 15
numtries=100
i=$numtries
while test $i -gt 0; do
# mkdir is a portable test-and-set.
if mkdir "$lockdir" 2>/dev/null; then
# This process acquired the lock.
"$@" -MD
stat=$?
# Release the lock.
rmdir "$lockdir"
break
else
# If the lock is being held by a different process, wait
# until the winning process is done or we timeout.
while test -d "$lockdir" && test $i -gt 0; do
sleep 1
i=`expr $i - 1`
done
fi
i=`expr $i - 1`
done
trap - 1 2 13 15
if test $i -le 0; then
echo "$0: failed to acquire lock after $numtries attempts" >&2
echo "$0: check lockdir '$lockdir'" >&2
exit 1
fi
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
# Each line is of the form `foo.o: dependent.h',
# or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
# Do two passes, one to just change these to
# `$object: dependent.h' and one to simply `dependent.h:'.
sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process this invocation
# correctly. Breaking it into two sed invocations is a workaround.
sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
hp2)
# The "hp" stanza above does not work with aCC (C++) and HP's ia64
# compilers, which have integrated preprocessors. The correct option
# to use with these is +Maked; it writes dependencies to a file named
# 'foo.d', which lands next to the object file, wherever that
# happens to be.
# Much of this is similar to the tru64 case; see comments there.
set_dir_from "$object"
set_base_from "$object"
if test "$libtool" = yes; then
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir.libs/$base.d
"$@" -Wc,+Maked
else
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir$base.d
"$@" +Maked
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile1" "$tmpdepfile2"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
do
test -f "$tmpdepfile" && break
done
if test -f "$tmpdepfile"; then
sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
# Add 'dependent.h:' lines.
sed -ne '2,${
s/^ *//
s/ \\*$//
s/$/:/
p
}' "$tmpdepfile" >> "$depfile"
else
make_dummy_depfile
fi
rm -f "$tmpdepfile" "$tmpdepfile2"
;;
tru64)
# The Tru64 compiler uses -MD to generate dependencies as a side
# effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
# At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
# dependencies in 'foo.d' instead, so we check for that too.
# Subdirectories are respected.
set_dir_from "$object"
set_base_from "$object"
if test "$libtool" = yes; then
# Libtool generates 2 separate objects for the 2 libraries. These
# two compilations output dependencies in $dir.libs/$base.o.d and
# in $dir$base.o.d. We have to check for both files, because
# one of the two compilations can be disabled. We should prefer
# $dir$base.o.d over $dir.libs/$base.o.d because the latter is
# automatically cleaned when .libs/ is deleted, while ignoring
# the former would cause a distcleancheck panic.
tmpdepfile1=$dir$base.o.d # libtool 1.5
tmpdepfile2=$dir.libs/$base.o.d # Likewise.
tmpdepfile3=$dir.libs/$base.d # Compaq CCC V6.2-504
"$@" -Wc,-MD
else
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir$base.d
tmpdepfile3=$dir$base.d
"$@" -MD
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
do
test -f "$tmpdepfile" && break
done
# Same post-processing that is required for AIX mode.
aix_post_process_depfile
;;
msvc7)
if test "$libtool" = yes; then
showIncludes=-Wc,-showIncludes
else
showIncludes=-showIncludes
fi
"$@" $showIncludes > "$tmpdepfile"
stat=$?
grep -v '^Note: including file: ' "$tmpdepfile"
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
echo "$object : \\" > "$depfile"
# The first sed program below extracts the file names and escapes
# backslashes for cygpath. The second sed program outputs the file
# name when reading, but also accumulates all include files in the
# hold buffer in order to output them again at the end. This only
# works with sed implementations that can handle large buffers.
sed < "$tmpdepfile" -n '
/^Note: including file: *\(.*\)/ {
s//\1/
s/\\/\\\\/g
p
}' | $cygpath_u | sort -u | sed -n '
s/ /\\ /g
s/\(.*\)/'"$tab"'\1 \\/p
s/.\(.*\) \\/\1:/
H
$ {
s/.*/'"$tab"'/
G
p
}' >> "$depfile"
echo >> "$depfile" # make sure the fragment doesn't end with a backslash
rm -f "$tmpdepfile"
;;
msvc7msys)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
#nosideeffect)
# This comment above is used by automake to tell side-effect
# dependency tracking mechanisms from slower ones.
dashmstdout)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout, regardless of -o.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
# Remove '-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
test -z "$dashmflag" && dashmflag=-M
# Require at least two characters before searching for ':'
# in the target name. This is to cope with DOS-style filenames:
# a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
"$@" $dashmflag |
sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
rm -f "$depfile"
cat < "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process this sed invocation
# correctly. Breaking it into two sed invocations is a workaround.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
dashXmstdout)
# This case only exists to satisfy depend.m4. It is never actually
# run, as this mode is specially recognized in the preamble.
exit 1
;;
makedepend)
"$@" || exit $?
# Remove any Libtool call
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
# X makedepend
shift
cleared=no eat=no
for arg
do
case $cleared in
no)
set ""; shift
cleared=yes ;;
esac
if test $eat = yes; then
eat=no
continue
fi
case "$arg" in
-D*|-I*)
set fnord "$@" "$arg"; shift ;;
# Strip any option that makedepend may not understand. Remove
# the object too, otherwise makedepend will parse it as a source file.
-arch)
eat=yes ;;
-*|$object)
;;
*)
set fnord "$@" "$arg"; shift ;;
esac
done
obj_suffix=`echo "$object" | sed 's/^.*\././'`
touch "$tmpdepfile"
${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
rm -f "$depfile"
# makedepend may prepend the VPATH from the source file name to the object.
# No need to regex-escape $object, excess matching of '.' is harmless.
sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process the last invocation
# correctly. Breaking it into two sed invocations is a workaround.
sed '1,2d' "$tmpdepfile" \
| tr ' ' "$nl" \
| sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile" "$tmpdepfile".bak
;;
cpp)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
# Remove '-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
"$@" -E \
| sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
-e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
| sed '$ s: \\$::' > "$tmpdepfile"
rm -f "$depfile"
echo "$object : \\" > "$depfile"
cat < "$tmpdepfile" >> "$depfile"
sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
msvisualcpp)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
IFS=" "
for arg
do
case "$arg" in
-o)
shift
;;
$object)
shift
;;
"-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
set fnord "$@"
shift
shift
;;
*)
set fnord "$@" "$arg"
shift
shift
;;
esac
done
"$@" -E 2>/dev/null |
sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
rm -f "$depfile"
echo "$object : \\" > "$depfile"
sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
echo "$tab" >> "$depfile"
sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
rm -f "$tmpdepfile"
;;
msvcmsys)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
none)
exec "$@"
;;
*)
echo "Unknown depmode $depmode" 1>&2
exit 1
;;
esac
exit 0
# Local Variables:
# mode: shell-script
# sh-indentation: 2
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC"
# time-stamp-end: "; # UTC"
# End:

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libcgroup-0.41/dist/Makefile.am vendored Normal file
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View File

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libcgroup-0.41/dist/libcgroup.spec vendored Normal file
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%define soversion 1.0.41
%define soversion_major 1
Name: libcgroup
Summary: Tools and libraries to control and monitor control groups
Group: System Environment/Libraries
Version: 0.41
Release: 1%{?dist}
License: LGPLv2+
URL: http://libcg.sourceforge.net/
Source0: http://downloads.sourceforge.net/libcg/%{name}-%{version}.tar.bz2
BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
BuildRequires: pam-devel
BuildRequires: byacc
BuildRequires: flex
BuildRequires: coreutils
Requires(pre): shadow-utils
Requires(post): chkconfig, /sbin/service
Requires(preun): /sbin/chkconfig
%description
Control groups infrastructure. The tools and library help manipulate, control,
administrate and monitor control groups and the associated controllers.
%package pam
Summary: A Pluggable Authentication Module for libcgroup
Group: System Environment/Base
Requires: libcgroup = %{version}-%{release}
%description pam
Linux-PAM module, which allows administrators to classify the user's login
processes to pre-configured control group.
%package devel
Summary: Development libraries to develop applications that utilize control groups
Group: Development/Libraries
Requires: libcgroup = %{version}-%{release}
%description devel
It provides API to create/delete and modify cgroup nodes. It will also in the
future allow creation of persistent configuration for control groups and
provide scripts to manage that configuration.
%prep
%setup -q
%build
%configure --bindir=/bin --sbindir=/sbin --libdir=%{_libdir} --enable-initscript-install --enable-pam-module-dir=/%{_lib}/security
make %{?_smp_mflags}
%install
rm -rf $RPM_BUILD_ROOT
make DESTDIR=$RPM_BUILD_ROOT install
# install config files
mkdir -p $RPM_BUILD_ROOT/%{_sysconfdir}/sysconfig
cp samples/cgred.conf $RPM_BUILD_ROOT/%{_sysconfdir}/sysconfig/cgred.conf
cp samples/cgconfig.sysconfig $RPM_BUILD_ROOT/%{_sysconfdir}/sysconfig/cgconfig
cp samples/cgconfig.conf $RPM_BUILD_ROOT/%{_sysconfdir}/cgconfig.conf
cp samples/cgrules.conf $RPM_BUILD_ROOT/%{_sysconfdir}/cgrules.conf
cp samples/cgsnapshot_blacklist.conf $RPM_BUILD_ROOT/%{_sysconfdir}/cgsnapshot_blacklist.conf
# sanitize pam module, we need only pam_cgroup.so
mv -f $RPM_BUILD_ROOT/%{_lib}/security/pam_cgroup.so.*.*.* $RPM_BUILD_ROOT/%{_lib}/security/pam_cgroup.so
rm -f $RPM_BUILD_ROOT/%{_lib}/security/pam_cgroup.la $RPM_BUILD_ROOT/%{_lib}/security/pam_cgroup.so.*
# move the libraries to /
mkdir -p $RPM_BUILD_ROOT/%{_lib}
mv -f $RPM_BUILD_ROOT/%{_libdir}/libcgroup.so.%{soversion} $RPM_BUILD_ROOT/%{_lib}
rm -f $RPM_BUILD_ROOT/%{_libdir}/libcgroup.so.%{soversion_major}
ln -sf libcgroup.so.%{soversion} $RPM_BUILD_ROOT/%{_lib}/libcgroup.so.%{soversion_major}
ln -sf ../../%{_lib}/libcgroup.so.%{soversion} $RPM_BUILD_ROOT/%{_libdir}/libcgroup.so
rm -f $RPM_BUILD_ROOT/%{_libdir}/*.la
%clean
rm -rf $RPM_BUILD_ROOT
%pre
getent group cgred >/dev/null || groupadd cgred
%post
/sbin/ldconfig
/sbin/chkconfig --add cgred
/sbin/chkconfig --add cgconfig
%preun
if [ $1 = 0 ]; then
/sbin/service cgred stop > /dev/null 2>&1 || :
/sbin/service cgconfig stop > /dev/null 2>&1 || :
/sbin/chkconfig --del cgconfig
/sbin/chkconfig --del cgred
fi
%postun -p /sbin/ldconfig
%files
%defattr(-,root,root,-)
%config(noreplace) %{_sysconfdir}/sysconfig/cgred.conf
%config(noreplace) %{_sysconfdir}/sysconfig/cgconfig
%config(noreplace) %{_sysconfdir}/cgconfig.conf
%config(noreplace) %{_sysconfdir}/cgrules.conf
%config(noreplace) %{_sysconfdir}/cgsnapshot_blacklist.conf
/%{_lib}/libcgroup.so.*
%attr(2755, root, cgred) /bin/cgexec
/bin/cgclassify
/bin/cgcreate
/bin/cgget
/bin/cgset
/bin/cgdelete
/bin/lscgroup
/bin/lssubsys
/sbin/cgconfigparser
/sbin/cgrulesengd
/sbin/cgclear
/bin/cgsnapshot
%attr(0644, root, root) %{_mandir}/man1/*
%attr(0644, root, root) %{_mandir}/man5/*
%attr(0644, root, root) %{_mandir}/man8/*
%attr(0755,root,root) %{_initrddir}/cgconfig
%attr(0755,root,root) %{_initrddir}/cgred
%doc COPYING INSTALL README_daemon
%files pam
%defattr(-,root,root,-)
%attr(0755,root,root) /%{_lib}/security/pam_cgroup.so
%doc COPYING INSTALL
%files devel
%defattr(-,root,root,-)
%{_includedir}/libcgroup.h
%{_includedir}/libcgroup/*.h
%{_libdir}/libcgroup.*
/%{_libdir}/pkgconfig/libcgroup.pc
%doc COPYING INSTALL
%changelog
* Tue Nov 2 2010 Jan Safranek <jsafrane@redhat.com> 0.37.rc1-1
- Add cgsnapshot
* Thu Feb 18 2010 Dhaval Giani <dhaval.giani@gmail.com> 0.36.rc1-1
- Add pkgconfig file
* Tue Jan 19 2010 Balbir Singh <balbir@linux.vnet.ibm.com> 0.35.1
- Integrate Jan's fixes for distributing cgget and initscripts
* Thu Oct 22 2009 Jan Safranek <jsafrane@redhat.com> 0.34-1
- Update to latest upstream
- Split PAM module to separate subpackage
* Tue Feb 24 2009 Balbir Singh <balbir@linux.vnet.ibm.com> 0.33-1
- Update to 0.33, spec file changes to add Makefiles and pam_cgroup module
* Fri Oct 10 2008 Dhaval Giani <dhaval@linux.vnet.ibm.com> 0.32-1
- Update to latest upstream
* Thu Sep 11 2008 Dhaval Giani <dhaval@linux-vnet.ibm.com> 0.31-1
- Update to latest upstream
* Sat Aug 2 2008 Dhaval Giani <dhaval@linux.vnet.ibm.com> 0.1c-3
- Change release to fix broken upgrade path
* Wed Jun 11 2008 Dhaval Giani <dhaval@linux.vnet.ibm.com> 0.1c-1
- Update to latest upstream version
* Tue Jun 3 2008 Balbir Singh <balbir@linux.vnet.ibm.com> 0.1b-3
- Add post and postun. Also fix Requires for devel to depend on base n-v-r
* Sat May 31 2008 Balbir Singh <balbir@linux.vnet.ibm.com> 0.1b-2
- Fix makeinstall, Source0 and URL (review comments from Tom)
* Mon May 26 2008 Balbir Singh <balbir@linux.vnet.ibm.com> 0.1b-1
- Add a generatable spec file
* Tue May 20 2008 Balbir Singh <balbir@linux.vnet.ibm.com> 0.1-1
- Get the spec file to work
* Tue May 20 2008 Dhaval Giani <dhaval@linux.vnet.ibm.com> 0.01-1
- The first version of libcg

169
libcgroup-0.41/dist/libcgroup.spec.in vendored Normal file
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@ -0,0 +1,169 @@
%define soversion @LIBRARY_VERSION_MAJOR@.@LIBRARY_VERSION_MINOR@.@LIBRARY_VERSION_RELEASE@
%define soversion_major @LIBRARY_VERSION_MAJOR@
Name: libcgroup
Summary: Tools and libraries to control and monitor control groups
Group: System Environment/Libraries
Version: @PACKAGE_VERSION@
Release: 1%{?dist}
License: LGPLv2+
URL: http://libcg.sourceforge.net/
Source0: http://downloads.sourceforge.net/libcg/%{name}-%{version}.tar.bz2
BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
BuildRequires: pam-devel
BuildRequires: byacc
BuildRequires: flex
BuildRequires: coreutils
Requires(pre): shadow-utils
Requires(post): chkconfig, /sbin/service
Requires(preun): /sbin/chkconfig
%description
Control groups infrastructure. The tools and library help manipulate, control,
administrate and monitor control groups and the associated controllers.
%package pam
Summary: A Pluggable Authentication Module for libcgroup
Group: System Environment/Base
Requires: libcgroup = %{version}-%{release}
%description pam
Linux-PAM module, which allows administrators to classify the user's login
processes to pre-configured control group.
%package devel
Summary: Development libraries to develop applications that utilize control groups
Group: Development/Libraries
Requires: libcgroup = %{version}-%{release}
%description devel
It provides API to create/delete and modify cgroup nodes. It will also in the
future allow creation of persistent configuration for control groups and
provide scripts to manage that configuration.
%prep
%setup -q
%build
%configure --bindir=/bin --sbindir=/sbin --libdir=%{_libdir} --enable-initscript-install --enable-pam-module-dir=/%{_lib}/security
make %{?_smp_mflags}
%install
rm -rf $RPM_BUILD_ROOT
make DESTDIR=$RPM_BUILD_ROOT install
# install config files
mkdir -p $RPM_BUILD_ROOT/%{_sysconfdir}/sysconfig
cp samples/cgred.conf $RPM_BUILD_ROOT/%{_sysconfdir}/sysconfig/cgred.conf
cp samples/cgconfig.sysconfig $RPM_BUILD_ROOT/%{_sysconfdir}/sysconfig/cgconfig
cp samples/cgconfig.conf $RPM_BUILD_ROOT/%{_sysconfdir}/cgconfig.conf
cp samples/cgrules.conf $RPM_BUILD_ROOT/%{_sysconfdir}/cgrules.conf
cp samples/cgsnapshot_blacklist.conf $RPM_BUILD_ROOT/%{_sysconfdir}/cgsnapshot_blacklist.conf
# sanitize pam module, we need only pam_cgroup.so
mv -f $RPM_BUILD_ROOT/%{_lib}/security/pam_cgroup.so.*.*.* $RPM_BUILD_ROOT/%{_lib}/security/pam_cgroup.so
rm -f $RPM_BUILD_ROOT/%{_lib}/security/pam_cgroup.la $RPM_BUILD_ROOT/%{_lib}/security/pam_cgroup.so.*
# move the libraries to /
mkdir -p $RPM_BUILD_ROOT/%{_lib}
mv -f $RPM_BUILD_ROOT/%{_libdir}/libcgroup.so.%{soversion} $RPM_BUILD_ROOT/%{_lib}
rm -f $RPM_BUILD_ROOT/%{_libdir}/libcgroup.so.%{soversion_major}
ln -sf libcgroup.so.%{soversion} $RPM_BUILD_ROOT/%{_lib}/libcgroup.so.%{soversion_major}
ln -sf ../../%{_lib}/libcgroup.so.%{soversion} $RPM_BUILD_ROOT/%{_libdir}/libcgroup.so
rm -f $RPM_BUILD_ROOT/%{_libdir}/*.la
%clean
rm -rf $RPM_BUILD_ROOT
%pre
getent group cgred >/dev/null || groupadd cgred
%post
/sbin/ldconfig
/sbin/chkconfig --add cgred
/sbin/chkconfig --add cgconfig
%preun
if [ $1 = 0 ]; then
/sbin/service cgred stop > /dev/null 2>&1 || :
/sbin/service cgconfig stop > /dev/null 2>&1 || :
/sbin/chkconfig --del cgconfig
/sbin/chkconfig --del cgred
fi
%postun -p /sbin/ldconfig
%files
%defattr(-,root,root,-)
%config(noreplace) %{_sysconfdir}/sysconfig/cgred.conf
%config(noreplace) %{_sysconfdir}/sysconfig/cgconfig
%config(noreplace) %{_sysconfdir}/cgconfig.conf
%config(noreplace) %{_sysconfdir}/cgrules.conf
%config(noreplace) %{_sysconfdir}/cgsnapshot_blacklist.conf
/%{_lib}/libcgroup.so.*
%attr(2755, root, cgred) /bin/cgexec
/bin/cgclassify
/bin/cgcreate
/bin/cgget
/bin/cgset
/bin/cgdelete
/bin/lscgroup
/bin/lssubsys
/sbin/cgconfigparser
/sbin/cgrulesengd
/sbin/cgclear
/bin/cgsnapshot
%attr(0644, root, root) %{_mandir}/man1/*
%attr(0644, root, root) %{_mandir}/man5/*
%attr(0644, root, root) %{_mandir}/man8/*
%attr(0755,root,root) %{_initrddir}/cgconfig
%attr(0755,root,root) %{_initrddir}/cgred
%doc COPYING INSTALL README_daemon
%files pam
%defattr(-,root,root,-)
%attr(0755,root,root) /%{_lib}/security/pam_cgroup.so
%doc COPYING INSTALL
%files devel
%defattr(-,root,root,-)
%{_includedir}/libcgroup.h
%{_includedir}/libcgroup/*.h
%{_libdir}/libcgroup.*
/%{_libdir}/pkgconfig/libcgroup.pc
%doc COPYING INSTALL
%changelog
* Tue Nov 2 2010 Jan Safranek <jsafrane@redhat.com> 0.37.rc1-1
- Add cgsnapshot
* Thu Feb 18 2010 Dhaval Giani <dhaval.giani@gmail.com> 0.36.rc1-1
- Add pkgconfig file
* Tue Jan 19 2010 Balbir Singh <balbir@linux.vnet.ibm.com> 0.35.1
- Integrate Jan's fixes for distributing cgget and initscripts
* Thu Oct 22 2009 Jan Safranek <jsafrane@redhat.com> 0.34-1
- Update to latest upstream
- Split PAM module to separate subpackage
* Tue Feb 24 2009 Balbir Singh <balbir@linux.vnet.ibm.com> 0.33-1
- Update to 0.33, spec file changes to add Makefiles and pam_cgroup module
* Fri Oct 10 2008 Dhaval Giani <dhaval@linux.vnet.ibm.com> 0.32-1
- Update to latest upstream
* Thu Sep 11 2008 Dhaval Giani <dhaval@linux-vnet.ibm.com> 0.31-1
- Update to latest upstream
* Sat Aug 2 2008 Dhaval Giani <dhaval@linux.vnet.ibm.com> 0.1c-3
- Change release to fix broken upgrade path
* Wed Jun 11 2008 Dhaval Giani <dhaval@linux.vnet.ibm.com> 0.1c-1
- Update to latest upstream version
* Tue Jun 3 2008 Balbir Singh <balbir@linux.vnet.ibm.com> 0.1b-3
- Add post and postun. Also fix Requires for devel to depend on base n-v-r
* Sat May 31 2008 Balbir Singh <balbir@linux.vnet.ibm.com> 0.1b-2
- Fix makeinstall, Source0 and URL (review comments from Tom)
* Mon May 26 2008 Balbir Singh <balbir@linux.vnet.ibm.com> 0.1b-1
- Add a generatable spec file
* Tue May 20 2008 Balbir Singh <balbir@linux.vnet.ibm.com> 0.1-1
- Get the spec file to work
* Tue May 20 2008 Dhaval Giani <dhaval@linux.vnet.ibm.com> 0.01-1
- The first version of libcg

2
libcgroup-0.41/doc/Makefile.am Normal file
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@ -0,0 +1,2 @@
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614
libcgroup-0.41/doc/Makefile.in Normal file
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.\" Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
.\" Written by Ivana Varekova <varekova@redhat.com>.
.TH CGCLASSIFY 1 2009-03-15 "Linux" "libcgroup Manual"
.SH NAME
cgclassify \- move running task(s) to given cgroups
.SH SYNOPSIS
\fBcgclassify\fR [\fB-g\fR <\fIcontrollers>:<path\fR>] [--sticky | --cancel-sticky] <\fIpidlist\fR>
.SH DESCRIPTION
this command moves processes defined by the list
of processes
(\fBpidlist\fR)
to the given control groups.
The pids in the pidlist are separated by spaces
.TP
.B -g <controllers>:<path>
defines the control groups where the task will be moved.
\fBcontrollers\fR is a list of controllers and
\fBpath\fR is the relative path to control groups
in the given controllers list.
This flag can be used multiple times to
define multiple pairs of lists of controllers
and relative paths.
Instead of the list of all mounted controllers,
the wildcard \fB*\fR can be used.
If this option is not used then
\fBcgclassify\fR will automatically move the task to a
control group based on \fB/etc/cgrules.conf\fR.
.TP
.B --sticky
If this option is used, the daemon of service cgred (cgrulesengd process)
does not change both the specified \fBpidlist\fR and their children tasks.
Without this option, the daemon does not change the specified \fBpidlist\fR
but it automatically changes their child tasks to the right cgroup based on
\fB/etc/cgrules.conf\fR.
.TP
.B --cancel-sticky
If this option is used, the daemon of service cgred (cgrulesengd process)
can automatically change both the specified \fBpidlist\fR and their child
tasks to the right cgroup based on \fB/etc/cgrules.conf\fR.
.SH ENVIRONMENT VARIABLES
.TP
.B CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are \fBDEBUG\fR,
\fBINFO\fR, \fBWARNING\fR or \fBERROR\fR.
.SH FILES
.TP
.B /etc/cgrules.conf
default libcgroup configuration file
.SH SEE ALSO
cgrules.conf (5), cgexec (1)

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.\" Copyright IBM Corporation. 2009.
.\" Written by Dhaval Giani <dhaval@linux.vnet.ibm.com>.
.TH CGCLEAR 1 2009-10-23 "Linux" "libcgroup Manual"
.SH NAME
cgclear \- unload the cgroup filesystem
.SH SYNOPSIS
\fBcgclear\fR [\fB-e\fR] [\fB-l\fR <\fIfilename\fR>] [\fB-L\fR <\fIdirectory\fR>] [...]
.SH DESCRIPTION
Without parameters, this command moves all the tasks inside the various cgroups
to the root cgroup, deletes all the cgroups and finally
unmounts the cgroup filesystem from the system.
If one or more config files are specified, only groups defined in the config
files are removed. The files are processed in reverse order, i.e. the last
file on command line is processed first, so \fBcgclear\fR can have the same
command line arguments as appropriate \fBcgconfigparser\fR.
.TP
.B -l, --load=<filename>
specifies the config file to read. This option can be used multiple times and
can be mixed with \fB-L\fR option.
.TP
.B -L, --load-directory=<directory>
specifies the directory, which is searched for configuration files. All files
in this directory will be processed in alphabetical order as they were specified
by \fB-l\fR option. This option can be used multiple times and
can be mixed with \fB-l\fR option.
.TP
.B -e
specifies that only empty groups should be removed. If a group defined in a
config file has tasks inside or has a subgroup, it won't be removed. This
option works only with \fB-l\fR or \fB-L\fR options.
.SH ENVIRONMENT VARIABLES
.TP
.B CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are \fBDEBUG\fR,
\fBINFO\fR, \fBWARNING\fR or \fBERROR\fR.
.SH SEE ALSO
cgconfigparser(1)

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.TH CGCONFIG.CONF 5
.\"***********************************
.SH NAME
cgconfig.conf \- libcgroup configuration file
.\"***********************************
.SH DESCRIPTION
.B "cgconfig.conf"
is a configuration file used by
.B libcgroup
to define control groups, their parameters and their mount points.
The file consists of
.I mount
,
.I group
and
.I default
sections. These sections can be in arbitrary order and all of them are
optional. Any line starting with '#' is considered a comment line and
is ignored.
.LP
.I mount
section has this form:
.RS
.nf
.ft B
.sp
mount {
.RS
.ft B
<controller> = <path>;
.I "..."
.RE
.ft B
}
.ft R
.fi
.RE
.TP
.B controller
Name of the kernel subsystem. The list of subsystems supported by the kernel
can be found in
.I /proc/cgroups
file. Named hierarchy can be specified as controller
\fB"name=<somename>"\fR. Do not forget to use double quotes around
this controller name (see examples below).
.B Libcgroup
merges all subsystems mounted to the same directory (see
Example 1) and the directory is mounted only once.
.TP
.B path
The directory path where the group hierarchy associated to a given
controller shall be mounted. The directory is created
automatically on cgconfig service startup if it does not exist and
is deleted on service shutdown.
.LP
If no
.I mount
section is specified, no controllers are mounted.
.I group
section has this form:
.RS
.nf
.ft B
.sp
group <name> {
.RS
.ft B
[permissions]
<controller> {
.RS
.ft B
<param name> = <param value>;
.I "..."
.RE
.ft B
}
.I "..."
.RE
.ft B
}
.ft R
.fi
.RE
.TP
.B name
Name of the control group. It can contain only characters, which are
allowed for directory names.
The groups form a tree, i.e. a control group can contain zero or more
subgroups. Subgroups can be specified using '/' delimiter.
The root control group is always created automatically in all hierarchies
and it is the base of the group hierarchy. It can be explicitly specified in
.B cgconfig.conf
by using '.' as group name. This can be used e.g. to set its permissions,
as shown in Example 6.
When the parent control group of a subgroup is not specified
it is created automatically.
.TP
.B permissions
Permissions of the given control group on mounted filesystem.
.I root
has always permission to do anything with the control group.
Permissions have the following syntax:
.RS 17
.ft B
.nf
perm {
.RS
.ft B
task {
.RS
.ft B
uid = <task user>;
gid = <task group>;
fperm = <file permissions>
.RE
}
admin {
.RS
uid = <admin name>;
gid = <admin group>;
dperm = <directory permissions>
fperm = <file permissions>
.RE
}
.RE
}
.fi
.RE
.ft R
.RS
.TP 17
.B "task user/group"
Name of the user and the group, which own the
.I tasks
file of the control group. Given fperm then specify the file permissions.
Please note that the given value is not used as was specified. Instead,
current file owner permissions are used as a "umask" for group and others
permissions. For example if fperm = 777 then both group and others will get
the same permissions as the file owner.
.TP 17
.B "admin user/group"
Name of the user and the group which own the rest of control group's
files. Given fperm and dperm control file and directory permissions.
Again, the given value is masked by the file/directory owner permissions.
.LP
Permissions are only apply to the enclosing control group and are not
inherited by subgroups. If there is no
.B perm
section in the control group definition,
.I root:root
is the owner of all files and default file permissions are preserved if
fperm resp. dperm are not specified.
.RE
.TP
.B controller
Name of the kernel subsystem.
The section can be
empty, default kernel parameters will be used in this case. By
specifying
.B controller
the control group and all its parents are controlled by the specific
subsystem. One control group can be controlled by multiple subsystems,
even if the subsystems are mounted on different directories. Each
control group must be controlled by at least one subsystem, so that
.B libcgroup
knows in which hierarchies the control group should be created.
The parameters of the given controller can be modified in the following
section enclosed in brackets.
.RS
.TP
.B param name
Name of the file to set. Each controller can have zero or more
parameters.
.TP
.B param value
Value which should be written to the file when the control group is
created. If it is enclosed in double quotes `"', it can contain spaces
and other special characters.
.RE
If no
.I group
section is specified, no groups are created.
.I default
section has this form:
.RS
.nf
.ft B
.sp
default {
.RS
.ft B
perm {
.RS
.ft B
task {
.RS
.ft B
uid = <task user>;
gid = <task group>;
fperm = <file permissions>
.RE
}
admin {
.RS
uid = <admin name>;
gid = <admin group>;
dperm = <directory permissions>
fperm = <file permissions>
.RE
}
.RE
}
.RE
}
.ft R
.fi
.RE
Content of the
.B perm
section has the same form as in
.I group
section. The permissions defined here specify owner and permissions of
groups and files of all groups, which do not have explicitly specified
their permissions in their
.I group
section.
.I template
section has the same structure as
.B group
section. Template name uses the same templates string as
.B cgrules.conf
destination tag (see (\fBcgrules.conf\fR (5)).
Template definition is used as a control group definition for rules in
\fBcgrules.conf\fR (5) with the same destination name.
Templates does not use
.B default
section settings.
.\"********************************************"
.SH EXAMPLES
.LP
.SS Example 1
.LP
The configuration file:
.LP
.RS
.nf
mount {
.RS
cpu = /mnt/cgroups/cpu;
cpuacct = /mnt/cgroups/cpu;
.RE
}
.fi
.RE
creates the hierarchy controlled by two subsystems with no groups
inside. It corresponds to the following operations:
.LP
.RS
.nf
mkdir /mnt/cgroups/cpu
mount -t cgroup -o cpu,cpuacct cpu /mnt/cgroups/cpu
.fi
.RE
.SS Example 2
.LP
The configuration file:
.LP
.RS
.nf
mount {
.RS
cpu = /mnt/cgroups/cpu;
"name=scheduler" = /mnt/cgroups/cpu;
"name=noctrl" = /mnt/cgroups/noctrl;
.RE
}
group daemons {
.RS
cpu {
.RS
cpu.shares = "1000";
.RE
}
.RE
}
group test {
.RS
"name=noctrl" {
}
.RE
}
.RE
.fi
creates two hierarchies. One hierarchy named \fBscheduler\fR controlled by cpu
subsystem, with group \fBdaemons\fR inside. Second hierarchy is named
\fBnoctrl\fR without any controller, with group \fBtest\fR. It corresponds to
following operations:
.LP
.RS
.nf
mkdir /mnt/cgroups/cpu
mount -t cgroup -o cpu,name=scheduler cpu /mnt/cgroups/cpu
mount -t cgroup -o none,name=noctrl none /mnt/cgroups/noctrl
mkdir /mnt/cgroups/cpu/daemons
echo 1000 > /mnt/cgroups/cpu/daemons/www/cpu.shares
mkdir /mnt/cgroups/noctrl/tests
.fi
.RE
The
.I daemons
group is created automatically when its first subgroup is
created. All its parameters have the default value and only root can
access group's files.
.LP
Since both
.I cpuacct
and
.I cpu
subsystems are mounted to the same directory, all
groups are implicitly controlled also by
.I cpuacct
subsystem, even if there is no
.I cpuacct
section in any of the groups.
.RE
.SS Example 3
.LP
The configuration file:
.LP
.RS
.nf
mount {
.RS
cpu = /mnt/cgroups/cpu;
cpuacct = /mnt/cgroups/cpu;
.RE
}
group daemons/www {
.RS
perm {
.RS
task {
.RS
uid = root;
gid = webmaster;
fperm = 770;
.RE
}
admin {
.RS
uid = root;
gid = root;
dperm = 775;
fperm = 744;
.RE
}
.RE
}
cpu {
.RS
cpu.shares = "1000";
.RE
}
.RE
}
group daemons/ftp {
.RS
perm {
.RS
task {
.RS
uid = root;
gid = ftpmaster;
fperm = 774;
.RE
}
admin {
.RS
uid = root;
gid = root;
dperm = 755;
fperm = 700;
.RE
}
.RE
}
cpu {
.RS
cpu.shares = "500";
.RE
}
.RE
}
.RE
.fi
creates the hierarchy controlled by two subsystems with one group and
two subgroups inside, setting one parameter.
It corresponds to the following operations (except for file permissions
which are little bit trickier to emulate via chmod):
.LP
.RS
.nf
mkdir /mnt/cgroups/cpu
mount -t cgroup -o cpu,cpuacct cpu /mnt/cgroups/cpu
mkdir /mnt/cgroups/cpu/daemons
mkdir /mnt/cgroups/cpu/daemons/www
chown root:root /mnt/cgroups/cpu/daemons/www/*
chown root:webmaster /mnt/cgroups/cpu/daemons/www/tasks
echo 1000 > /mnt/cgroups/cpu/daemons/www/cpu.shares
# + chmod the files so the result looks like:
# ls -la /mnt/cgroups/cpu/daemons/www/
# admin.dperm = 755:
# drwxr-xr-x. 2 root webmaster 0 Jun 16 11:51 .
#
# admin.fperm = 744:
# --w-------. 1 root webmaster 0 Jun 16 11:51 cgroup.event_control
# -r--r--r--. 1 root webmaster 0 Jun 16 11:51 cgroup.procs
# -r--r--r--. 1 root webmaster 0 Jun 16 11:51 cpuacct.stat
# -rw-r--r--. 1 root webmaster 0 Jun 16 11:51 cpuacct.usage
# -r--r--r--. 1 root webmaster 0 Jun 16 11:51 cpuacct.usage_percpu
# -rw-r--r--. 1 root webmaster 0 Jun 16 11:51 cpu.rt_period_us
# -rw-r--r--. 1 root webmaster 0 Jun 16 11:51 cpu.rt_runtime_us
# -rw-r--r--. 1 root webmaster 0 Jun 16 11:51 cpu.shares
# -rw-r--r--. 1 root webmaster 0 Jun 16 11:51 notify_on_release
#
# tasks.fperm = 770
# -rw-rw----. 1 root webmaster 0 Jun 16 11:51 tasks
mkdir /mnt/cgroups/cpu/daemons/ftp
chown root:root /mnt/cgroups/cpu/daemons/ftp/*
chown root:ftpmaster /mnt/cgroups/cpu/daemons/ftp/tasks
echo 500 > /mnt/cgroups/cpu/daemons/ftp/cpu.shares
# + chmod the files so the result looks like:
# ls -la /mnt/cgroups/cpu/daemons/ftp/
# admin.dperm = 755:
# drwxr-xr-x. 2 root ftpmaster 0 Jun 16 11:51 .
#
# admin.fperm = 700:
# --w-------. 1 root ftpmaster 0 Jun 16 11:51 cgroup.event_control
# -r--------. 1 root ftpmaster 0 Jun 16 11:51 cgroup.procs
# -r--------. 1 root ftpmaster 0 Jun 16 11:51 cpuacct.stat
# -rw-------. 1 root ftpmaster 0 Jun 16 11:51 cpuacct.usage
# -r--------. 1 root ftpmaster 0 Jun 16 11:51 cpuacct.usage_percpu
# -rw-------. 1 root ftpmaster 0 Jun 16 11:51 cpu.rt_period_us
# -rw-------. 1 root ftpmaster 0 Jun 16 11:51 cpu.rt_runtime_us
# -rw-------. 1 root ftpmaster 0 Jun 16 11:51 cpu.shares
# -rw-------. 1 root ftpmaster 0 Jun 16 11:51 notify_on_release
#
# tasks.fperm = 774:
# -rw-rw-r--. 1 root ftpmaster 0 Jun 16 11:51 tasks
.fi
.RE
The
.I daemons
group is created automatically when its first subgroup is
created. All its parameters have the default value and only root can
access the group's files.
.LP
Since both
.I cpuacct
and
.I cpu
subsystems are mounted to the same directory, all
groups are implicitly also controlled by the
.I cpuacct
subsystem, even if there is no
.I cpuacct
section in any of the groups.
.RE
.SS Example 4
.LP
The configuration file:
.LP
.RS
.nf
mount {
.RS
cpu = /mnt/cgroups/cpu;
cpuacct = /mnt/cgroups/cpuacct;
.RE
}
group daemons {
.RS
cpuacct{
}
cpu {
}
.RE
}
.fi
.RE
creates two hierarchies and one common group in both of them.
It corresponds to the following operations:
.LP
.RS
.nf
mkdir /mnt/cgroups/cpu
mkdir /mnt/cgroups/cpuacct
mount -t cgroup -o cpu cpu /mnt/cgroups/cpu
mount -t cgroup -o cpuacct cpuacct /mnt/cgroups/cpuacct
mkdir /mnt/cgroups/cpu/daemons
mkdir /mnt/cgroups/cpuacct/daemons
.fi
.RE
In fact there are two groups created. One in the
.I cpuacct
hierarchy, the second in the
.I cpu
hierarchy. These two groups have nothing in common and can
contain different subgroups and different tasks.
.SS Example 5
.LP
The configuration file:
.LP
.RS
.nf
mount {
.RS
cpu = /mnt/cgroups/cpu;
cpuacct = /mnt/cgroups/cpuacct;
.RE
}
group daemons {
.RS
cpuacct{
}
.RE
}
group daemons/www {
.RS
cpu {
.RS
cpu.shares = "1000";
.RE
}
.RE
}
group daemons/ftp {
.RS
cpu {
.RS
cpu.shares = "500";
.RE
}
.RE
}
.fi
.RE
creates two hierarchies with few groups inside. One of the groups
is created in both hierarchies.
It corresponds to the following operations:
.LP
.RS
.nf
mkdir /mnt/cgroups/cpu
mkdir /mnt/cgroups/cpuacct
mount -t cgroup -o cpu cpu /mnt/cgroups/cpu
mount -t cgroup -o cpuacct cpuacct /mnt/cgroups/cpuacct
mkdir /mnt/cgroups/cpuacct/daemons
mkdir /mnt/cgroups/cpu/daemons
mkdir /mnt/cgroups/cpu/daemons/www
echo 1000 > /mnt/cgroups/cpu/daemons/www/cpu.shares
mkdir /mnt/cgroups/cpu/daemons/ftp
echo 500 > /mnt/cgroups/cpu/daemons/ftp/cpu.shares
.fi
.RE
Group
.I daemons
is created in both hierarchies. In the
.I cpuacct
hierarchy the group is explicitly mentioned in the configuration
file. In the
.I cpu
hierarchy the group is created implicitly when
.I www
is created there. These two groups have nothing in common, for example
they do not share processes and subgroups. Groups
.I www
and
.I ftp
are created only in the
.I cpu
hierarchy and are not controlled by the
.I cpuacct
subsystem.
.SS Example 6
.LP
The configuration file:
.LP
.RS
.nf
mount {
.RS
cpu = /mnt/cgroups/cpu;
cpuacct = /mnt/cgroups/cpu;
.RE
}
group . {
.RS
perm {
.RS
task {
.RS
uid = root;
gid = operator;
.RE
}
admin {
.RS
uid = root;
gid = operator;
.RE
}
.RE
}
cpu {
}
.RE
}
group daemons {
.RS
perm {
.RS
task {
.RS
uid = root;
gid = daemonmaster;
.RE
}
admin {
.RS
uid = root;
gid = operator;
.RE
}
.RE
}
cpu {
}
.RE
}
.RE
.fi
creates the hierarchy controlled by two subsystems with one group having some
special permissions.
It corresponds to the following operations:
.LP
.RS
.nf
mkdir /mnt/cgroups/cpu
mount -t cgroup -o cpu,cpuacct cpu /mnt/cgroups/cpu
chown root:operator /mnt/cgroups/cpu/*
chown root:operator /mnt/cgroups/cpu/tasks
mkdir /mnt/cgroups/cpu/daemons
chown root:operator /mnt/cgroups/cpu/daemons/*
chown root:daemonmaster /mnt/cgroups/cpu/daemons/tasks
.fi
.RE
Users which are members of the
.I operator
group are allowed to administer the control groups, i.e. create new control
groups and move processes between these groups without having root
privileges.
Members of the
.I daemonmaster
group can move processes to the
.I daemons
control group, but they can not move the process out of the group. Only the
.I operator
or root can do that.
.SS Example 7
.LP
The configuration file:
.LP
.RS
.nf
mount {
.RS
cpu = /mnt/cgroups/cpu;
cpuacct = /mnt/cgroups/cpuacct;
.RE
}
group students {
.RS
cpuacct{
}
cpu {
}
.RE
}
template students/%u {
.RS
cpuacct{
}
cpu {
}
.RE
}
mkdir /mnt/cgroups/cpu/daemons
mkdir /mnt/cgroups/cpuacct/daemons
.fi
.RE
The situation is the similar as in Example 4. The only difference is template,
which is used if some rule uses "/students/%u" as a destination.
.SH RECOMMENDATIONS
.SS Keep hierarchies separated
Having multiple hierarchies is perfectly valid and can be useful
in various scenarios. To keeps things clean, do not
create one group in multiple hierarchies. Examples 4 and 5 show
how unreadable and confusing it can be, especially when reading
somebody elses configuration file.
.SS Explicit is better than implicit
.B libcgroup
can implicitly create groups which are needed for the creation of
configured subgroups. This may be useful and save some typing in
simple scenarios. When it comes to multiple hierarchies, it's
better to explicitly specify all groups and all controllers
related to them.
.SH FILES
.LP
.PD .1v
.TP 20
.B /etc/cgconfig.conf
.TP
default libcgroup configuration file
.PD
.SH SEE ALSO
cgconfigparser (8)
.SH BUGS
Parameter values must be single strings without spaces.
Parsing of quoted strings is not implemented.
.SH

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.\" Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
.\" Written by Ivana Varekova <varekova@redhat.com>.
.TH CGCONFIGPARSER 8 2009-03-16 "Linux" "libcgroup Manual"
.SH NAME
cgconfigparser \- setup control group file system
.SH SYNOPSIS
\fBcgconfigparser\fR [\fB-h\fR] [\fB-l\fR \fI<filename>\fR] [\fB-L\fR \fI<directory>\fR] [...]
.SH OPTIONS
.TP
.B -h, --help
Displays help.
.TP
.B -l, --load=FILE
Parses the control groups configuration file
Sets up the control group file system
defined by the configuration file and mounts
mount points defined by the configuration file.
The format of the file is described in
\fBcgconfig.conf\fR. This option can be used multiple times and can be mixed
with \fB-L\fR option.
.TP
.B -L, --load-directory=DIR
Finds all files in given directory and parses them in alphabetical order
like they were specified by \fB-l\fR option. This option can be used
multiple times and can be mixed with \fB-l\fR option.
.TP
.B -a <agid>:<auid>
defines the default owner of the
rest of the defined control group’s files. These users are
allowed to set subsystem parameters and create subgroups.
The default value is the same as has the parent cgroup.
.TP
.B -d, --dperm=mode
sets the default permissions of a control groups directory.
The permissions needs to be specified as octal numbers e.g.
\fB-d 775\fR.
.TP
.B -f, --fperm=mode
sets the default permissions of the control group files.
The permissions needs to be specified as octal numbers e.g.
\fB-f 775\fR.
The value is not used as given because the current owner's
permissions are used as an umask (so 777 will set group and
others permissions to the owners permissions).
.TP
.B -s, --tperm=mode
sets the default permissions of the control group tasks files.
The permissions needs to be specified as octal numbers e.g.
\fB-f 775\fR.
The value is not used as given because the current owner's
permissions are used as an umask (so 777 will set group and
others permissions to the owners permissions).
.TP
.B -t <tuid>:<tgid>
defines the default owner of tasks file of the defined control
group. I.e. this user and members
of this group have write access to the file.
.LP
.SH ENVIRONMENT VARIABLES
.TP
.B CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are \fBDEBUG\fR,
\fBINFO\fR, \fBWARNING\fR or \fBERROR\fR.
.SH SEE ALSO
cgconfig.conf (5)

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.\" Written by Ivana Hutarova Varekova <varekova@redhat.com>
.TH CGCREATE 1 2009-03-15 "Linux" "libcgroup Manual"
.SH NAME
cgcreate \- create new cgroup(s)
.SH SYNOPSIS
\fBcgcreate\fR [\fB-h\fR] [\fB-t\fR <\fItuid>:<tgid\fR>]
[\fB-a\fR <\fIagid>:<auid\fR>] [\fB-f\fR mode] [\fB-d\fR mode]
[\fB-s\fR mode] \fB-g\fR <\fIcontrollers>:<path\fR> [\fB-g\fR ...]
.SH DESCRIPTION
The command creates new cgroup(s) defined by the options
\fB-g\fR.
.TP
.B -a <agid>:<auid>
defines the name of the user and the group which own the
rest of the defined control group’s files. These users are
allowed to set subsystem parameters and create subgroups.
The default value is the same as has the parent cgroup.
.TP
.B -d, --dperm=mode
sets the permissions of a control groups directory.
The permissions needs to be specified as octal numbers e.g.
\fB-d 775\fR.
.TP
.B -f, --fperm=mode
sets the permissions of the control groups parameters.
The permissions needs to be specified as octal numbers e.g.
\fB-f 775\fR.
The value is not used as given because the current owner's
permissions are used as an umask (so 777 will set group and
others permissions to the owners permissions).
.TP
.B -g <controllers>:<path>
defines control groups to be added.
\fBcontrollers\fR is a list of controllers and
\fBpath\fR is the relative path to control groups
in the given controllers list. This option can be specified
multiple times.
.TP
.B -h, --help
display this help and exit
.TP
.B -s, --tperm=mode
sets the permissions of the control group tasks file.
The permissions needs to be specified as octal numbers e.g.
\fB-s 775\fR.
The value is not used as given because the current owner's
permissions are used as an umask (so 777 will set group and
others permissions to the owners permissions).
.TP
.B -t <tuid>:<tgid>
defines the name of the user and the group, which owns tasks
file of the defined control group. I.e. this user and members
of this group have write access to the file.
The default value is the same as has the parent cgroup.
.SH ENVIRONMENT VARIABLES
.TP
.B CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are \fBDEBUG\fR,
\fBINFO\fR, \fBWARNING\fR or \fBERROR\fR.
.SH FILES
.SH SEE ALSO
cgrules.conf (5)
cgexec (1)
cgclassify (1)

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.\" Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
.\" Written by Jan Safranek <jsafrane@redhat.com>
.TH CGDELETE 1 2009-10-26 "Linux" "libcgroup Manual"
.SH NAME
cgdelete \- remove control group(s)
.SH SYNOPSIS
\fBcgdelete\fR [\fB-h\fR] [\fB-r\fR] [[\fB-g\fR]
<\fIcontrollers\fR>:\fI<path\fR>] ...
.SH DESCRIPTION
The \fBcgdelete\fR
program removes all specified control groups.
.TP
.B [-g] <controllers>:<path>
Defines the control group to delete. Multiple control groups nay be
specified.
.B -g
is optional.
.TP
.B -h, --help
Display this help and exit.
.TP
.B -r, --recursive
Recursively remove all subgroups.
.SH ENVIRONMENT VARIABLES
.TP
.B CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are \fBDEBUG\fR,
\fBINFO\fR, \fBWARNING\fR or \fBERROR\fR.
.SH SEE ALSO
cgcreate (1), lscgroup (1), cgclear (1)

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.\" Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
.\" Written by Ivana Varekova <varekova@redhat.com>
.TH CGEXEC 1 2009-03-15 "Linux" "libcgroup Manual"
.SH NAME
cgexec \- run the task in given control groups
.SH SYNOPSIS
\fBcgexec\fR [\fB-h\fR] [\fB-g\fR <\fIcontrollers>:<path\fR>] [--sticky] \fBcommand\fR [\fIarguments\fR]
.SH DESCRIPTION
The \fBcgexec\fR
program executes the task \fBcommand\fR
with arguments \fBarguments\fR in the given control groups.
.TP
.B -g <controllers>:<path>
defines the control groups in which the task will be run.
\fBcontrollers\fR is a list of controllers and
\fBpath\fR is the relative path to control groups
in the given controllers list.
This flag can be used multiple times to
define multiple pairs of lists of controllers
and relative paths.
Instead of the list of all mounted controllers,
the wildcard \fBb"*b"\fR can be used.
If this option is not used,
\fBcgexec\fR will automatically place the task in the right
cgroup based on \fB/etc/cgrules.conf\fR.
If \fB/etc/cgrules.conf\fR configuration file is used, there can be used
template names. Then the control group name contains
a template in destination tag (see \fBcgrules.conf\fR (5))
and if the cgroup does not exist in execution time,
it is created, based on \fB/etc/cgconfig.conf\fR specification.
If the specifications are not present the group is created with the default
kernel values.
.TP
.B -h, --help
Display this help and exit.
.TP
.B --sticky
If running the task \fBcommand\fR with this option, the daemon of
service cgred (cgrulesengd process) does not change both the task
of the \fBcommand\fR and the child tasks. Without this option,
the daemon does not change the task of the \fBcommand\fR but it
changes the child tasks to the right cgroup based on
\fB/etc/cgrules.conf\fR automatically.
.LP
.SH EXAMPLES
.nf
.ft B
cgexec -g *:test1 ls
.ft R
.fi
runs command \fBls\fR in control group test1
in all mounted controllers.
.nf
.ft B
cgexec -g cpu,memory:test1 ls -l
.ft R
.fi
runs command \fBls -l\fR in control group test1
in controllers cpu and memory.
.nf
.ft B
cgexec -g cpu,memory:test1 -g swap:test2 ls -l
.ft R
.fi
runs command \fBls -l\fR in control group test1
in controllers cpu and memory and control group
test2 in controller swap.
.SH ENVIRONMENT VARIABLES
.TP
.B CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are \fBDEBUG\fR,
\fBINFO\fR, \fBWARNING\fR or \fBERROR\fR.
.SH FILES
.TP
.B /etc/cgrules.conf
default libcgroup configuration file
.SH SEE ALSO
cgrules.conf (5)

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.\" Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
.\" Written by Jan Safranek <jsafrane@redhat.com>
.TH CGGET 1 2010-01-18 "Linux" "libcgroup Manual"
.SH NAME
cgget \- print parameter(s) of given group(s)
.SH SYNOPSIS
\fBcgget\fR [\fB-n\fR] [\fB-v\fR] [\fB-r\fR <\fIname\fR>]
[\fB-g\fR <\fIcontroller\fR>] [\fB-a\fR] <\fBpath\fR> ...
.br
\fBcgget\fR [\fB-n\fR] [\fB-v\fR] [\fB-r\fR <\fIname\fR>]
\fB-g\fR <\fIcontroller\fR>:<\fBpath\fR> ...
.SH DESCRIPTION
Prints the parameter(s) of input cgroup(s).
If neither controller nor variable are specified,
the values of all possible variables are displayed.
.TP
.B <path>
is the name of the cgroup which should be read.
This parameter can be used multiple times.
.TP
.B -a, --all
print the variables for all controllers which consist in the given cgroup
.TP
.B -g <controller>
defines controllers whose values should be displayed.
This option can be used multiple times.
.TP
.B -g <controller>:<path>
defines control groups whose values should be displayed.
This option can be used multiple times.
.TP
.B -h, --help
display help and exit
.TP
.B -n
do not print headers, i.e. names of groups.
.TP
.B -r, --variable <name>
defines parameter to display.
This option can be used multiple times.
.TP
.B -v, --values-only
print only values, not parameter names.
.SH EXAMPLES
.nf
$ cgget -r cpuset.cpus -r cpuset.mems first second
first:
cpuset.cpus=0-1
cpuset.mems=0
second:
cpuset.cpus=0
cpuset.mems=0
$ cgget -n -r cpuset.cpus -r cpuset.mems first second
cpuset.cpus=0-1
cpuset.mems=0
cpuset.cpus=0
cpuset.mems=0
$ cgget -nv -r cpuset.cpus -r cpuset.mems first second
0-1
0
0
0
$ cgget -n -g cpu /
cpu.rt_period_us=1000000
cpu.rt_runtime_us=950000
cpu.shares=1024
.fi
.SH ENVIRONMENT VARIABLES
.TP
.B CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are \fBDEBUG\fR,
\fBINFO\fR, \fBWARNING\fR or \fBERROR\fR.
.SH SEE ALSO
cgrules.conf (1), cgcreate (1), cgget (1)

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.\" Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
.\" Written by Ivana Varekova <varekova@redhat.com>.
.TH CGRED.CONF 5 2009-03-16 "Linux" "libcgroup Manual"
.SH NAME
cgred.conf \- libcgroup configuration file
.SH DESCRIPTION
\fBcgred.conf\fR is cgred service configuration file.
In this file there could be defined several internal values.
Defining anything else in this file will cause the
CGroup Rules Daemon program to fail.
.TP
\fBCONFIG_FILE\fR
specifies the configuration file for cgred service
.TP
\fBLOG_FILE\fR
variable specifies the file to which logs will be written
(by default they are not sent to a file but to syslog)
.TP
\fBNODAEMON\fR
if it is equal to "--nodamon" then
run cgred in non-daemon mode
.TP
\fBLOG\fR
define the verbosity of logging. Accepted values are '-v', '-vv', '-q'
and '--nolog'.
.LP
.SH FILES
.LP
.PD .1v
.TP 20
.B /etc/cgred.conf
.TP
default libcgroup configuration file
.PD .
.SH SEE ALSO
cgrules.conf (5),
cgconfig.conf (5)

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.\" Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
.\" Written by Ivana Varekova <varekova@redhat.com>
.TH CGRULES.CONF 5 2009-03-10 "Linux" "libcgroup Manual"
.SH NAME
cgrules.conf \- libcgroup configuration file
.SH DESCRIPTION
.B "cgrules.conf"
configuration file is used by
.B libcgroups
to define control groups to which a process belongs.
The file contains a list of rules which assign to a defined group/user a control
group in a subsystem (or control groups in subsystems).
Rules have two formats:
.in +4n
.nf
<user> <controllers> <destination>
.fi
.nf
<user>:<process name> <controllers> <destination>
.fi
.in
Where:
.I user
can be:
.nf
- a user name
- a group name with @group syntax
- the wildcard '*', for any user or group
- '%', which is equivalent to "ditto" (useful for
multi-line rules where different cgroups need to be
specified for various hierarchies for a single user)
.fi
.I process name
is optional and it can be:
.nf
- a process name
- a full command path of a process
.fi
.I controllers
can be:
.nf
- comma separated controller names (no spaces) or
- * (for all mounted controllers)
.fi
.I destination
can be:
.nf
- path relative to the controller hierarchy (ex. pgrp1/gid1/uid1)
- following strings called "\fBtemplates\fR" and will get expanded
%u username, uid if name resolving fails
%U uid
%g group name, gid if name resolving fails
%G gid
%p process name, pid if name not available
%P pid
'\\' can be used to escape '%'
.fi
First rule which matches the criteria will be executed.
Any text starting with '#' is considered as a start of comment line and is
ignored.
If the
.I destination
contains
.B template
string, the control group can be created on-fly. In time when some process wants
to use the template rule which leads to control group (see
\fBcgexec\fR (1)) and the control group does not exist, the group is created. The
template control group parameters can be specified in
.B cgconfig.conf
configuration file. See (\fBcgconfig.conf\fR (5)).
If the template definition is not found there created group have default
kernel setting.
.SH EXAMPLES
.nf
student devices /usergroup/students
.fi
Student's processes in the 'devices' subsystem belong to the control
group /usergroup/students.
.nf
student:cp devices /usergroup/students/cp
.fi
When student executes 'cp' command, the processes in the 'devices' subsystem
belong to the control group /usergroup/students/cp.
.nf
@admin * admingroup/
.fi
Processes started by anybody from admin group no matter in what subsystem belong
to the control group admingroup/.
.nf
peter cpu test1/
% memory test2/
.fi
The first line says Peter's task for cpu controller belongs to test1 control
group. The second one says Peter's tasks for memory controller belong to test2/
control group.
.nf
* * default/
.fi
All processes in any subsystem belong to the control group default/. Since
the earliest matched rule is applied, it makes sense to have this line
at the end of the list. It will put a task which was not mentioned in the
previous rules to default/ control group.
.nf
@students cpu,cpuacct students/%u
.fi
Processes in cpu and cpuacct subsystems started by anybody from students group
belong to group students/name. Where "name" is user name of owner of the
process.
.SH FILES
.LP
.PD .1v
.TP 20
.B /etc/cgrules.conf
.TP
default libcgroup configuration file
.PD .
.SH SEE ALSO
cgconfig.conf (5), cgclassify (1), cgred.conf (5)
.SH BUGS

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.\" Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
.\" Written by Jan Safranek <jsafrane@redhat.com>.
.TH CGRULESENGD 8 2009-02-18 "Linux" "libcgroup Manual"
.SH NAME
cgrulesengd \- control group rules daemon
.SH SYNOPSIS
\fBcgrulesengd\fR [options]
.SH DESCRIPTION
\fBcgrulesengd\fR is a daemon, which distributes processes to control groups. When
any process changes its effective UID or GID, \fBcgrulesengd\fR inspects the list
of rules loaded from the \fIcgrules.conf\fR file and moves the process to
the appropriate control group.
The list of rules is read during the daemon startup is are cached in the daemon's memory.
The daemon reloads the list of rules when it receives SIGUSR2 signal.
The daemon reloads the list of templates when it receives SIGUSR1 signal.
The daemon opens a standard unix socket to receive 'sticky' requests from \fBcgexec\fR.
.SH OPTIONS
.TP
.B -h|--help
Display help.
.TP
.B -f <path>|--logfile=<path>
Write log messages to the given log file. When '-' is used as <path>, log messages
are written to the standard output. If '\fB-f\fR' and '\fB-s\fR' are used together,
the logs are sent to both destinations.
.TP
.B -s[facility]|--syslog=[facility]
Write log messages to syslog. The default facility is DAEMON. If '\fB-f\fR'
and '\fB-s\fR' are used together, the logs are sent to both destinations.
.TP
.B -n|--nodaemon
Don't fork the daemon, stay in the foreground.
.TP
.B -v|--verbose
Display more log messages. This option can be used three times to enable more
verbose log messages.
.TP
.B -q|--quiet
Display less log messages.
.TP
.B -Q|--nolog
Disable logging.
.TP
.B -d|--debug
Equivalent to '-nvvvf -', i.e. don't fork the daemon, display all log messages and
write them to the standard output.
.TP
.B -u <user>|--socket-user=<user>
.B -g <group>|--socket-group=<group>
Set the owner of cgrulesengd socket. Assumes that \fBcgexec\fR runs with proper
suid permissions so it can write to the socket when \fBcgexec\fR --sticky is used.
.SH ENVIRONMENT VARIABLES
.TP
.B CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are \fBDEBUG\fR,
\fBINFO\fR, \fBWARNING\fR or \fBERROR\fR.
.SH FILES
.LP
.PD .1v
.TP 20
.B /etc/cgrules.conf
.TP
the default libcgroup configuration file
.SH SEE ALSO
cgrules.conf (5)

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.\" Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
.\" Written by Ivana Hutarova Varekova <varekova@redhat.com>
.TH CGSET 1 2009-03-15 "Linux" "libcgroup Manual"
.SH NAME
cgset \- set the parameters of given cgroup(s)
.SH SYNOPSIS
\fBcgset\fR [\fB-r\fR <\fIname=value\fR>] <\fBcgroup_path\fR> ...
.br
\fBcgset\fR \fB--copy-from\fR <\fIsource_cgroup_path\fR> <\fBcgroup_path\fR> ...
.SH DESCRIPTION
Set the parameters of input cgroups.
.TP
.B <path>
is the name of the cgroup which should be changed.
This parameter can be used multiple times.
.TP
.B -r <name=value>
defines the name of the file to set and
the value which should be written to that file.
This parameter can be used multiple times.
.TP
.B --copy-from <source_cgroup_path>
defines the name of the cgroup whose parameters will be
copied to the input cgroup.
.SH ENVIRONMENT VARIABLES
.TP
.B CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are \fBDEBUG\fR,
\fBINFO\fR, \fBWARNING\fR or \fBERROR\fR.
.SH SEE ALSO
cgrules.conf (1), cgcreate (1), cgget (1)

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.\" Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
.\" Written by Ivana Hutarova Varekova <varekova@redhat.com>
.TH CGSNAPSHOT 1 2010-07-28 "Linux" "libcgroup Manual"
.SH NAME
cgsnapshot \- generate the configuration file for given controllers
.SH SYNOPSIS
\fBcgsnapshot\fR [\fB-h\fR] [\fB-s\fR] [\fB-t\fR] [\fB-b\fR \fIfile\fR]
[\fB-w\fR \fIfile\fR] [\fB-f\fR \fIoutput_file\fR] [\fBcontroller\fR] [...]
.SH DESCRIPTION
\fBcgsnapshot\fR
generates the cgconfig compatible configuration file
for the given controllers.
If no controller is set, then
cgsnapshot shows all mounted hierarchies.
The output is in the same format as the
.B cgconfig.conf
configuration file.
.TP
.B -b file
Display only variables from the blacklist.
The default location of the blacklist is
.B /etc/cgsnapshot_blacklist.conf.
This list contains all variables which should be ignored by the
.B cgsnapshot
.
If the variable is blacklisted, it will not be displayed.
If it is not present on the blacklist, the whitelist
is checked.
.TP
.B -h, --help
display this help and exit
.TP
.B -f, --file
Redirect the output to output_file
.TP
.B -s, --silent
Ignore all warnings
.TP
.B -t, --strict
Do not display the variables which are not on the whitelist
.TP
.B -w file
Set the blacklist configuration file.
This list contains all variables which should be displayed by
.B cgsnapshot
.
If the variable is not blacklisted, the whitelist is checked.
If the variable is on the whitelist, it is displayed by
.B cgsnapshot
.
If the variable is not on the whitelist,
the variable is displayed and a warning message is produced.
By default the whitelist is not used.
The warning message can be omitted using the
.B -s, --silent
flag.
If the
.B -t, --strict
flag is used, the variable which is not on the whitelist is
not displayed.
.TP
.B controller
defines the controller whose hierarchies will be
output
.SH ENVIRONMENT VARIABLES
.TP
.B CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are \fBDEBUG\fR,
\fBINFO\fR, \fBWARNING\fR or \fBERROR\fR.
.SH FILES
.TP
.B /etc/cgsnapshot_blacklist.conf
default blacklist
.TP
.B /etc/cgsnapshot_whitelist.conf
default whitelist
.TP
.B /etc/cgconfig.conf
default libcgroup configuration file
.SH SEE ALSO
cgconfig.conf (5)

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.\" Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
.\" Written by Ivana Hutarova Varekova <varekova@redhat.com>
.TH LSCGROUP 1 2009-11-05 "Linux" "libcgroup Manual"
.SH NAME
lscgroup \- list all cgroups
.SH SYNOPSIS
\fBlscgroup\fR [[\fB-g\fR] <\fIcontrollers>:<path\fR>] [...]
.br
\fBlscgroup\fR [\fB-h|--help\fR]
.SH DESCRIPTION
List all/chosen cgroups.
.TP
.B <controllers>:<path>
defines the control groups whose subgroups will be shown.
If this parameter is not used, the command will
list all existing cgroups.
.SH ENVIRONMENT VARIABLES
.TP
.B CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are \fBDEBUG\fR,
\fBINFO\fR, \fBWARNING\fR or \fBERROR\fR.
.SH SEE ALSO
lssubsys (1), cgcreate (1), cgdelete (1),
cgconfig.conf (5)

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.\" Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
.\" Written by Ivana Hutarova Varekova <varekova@redhat.com>
.TH LSSUBSYS 1 2009-11-05 "Linux" "libcgroup Manual"
.SH NAME
lssubsys \- list hierarchies containing given subsystem
.SH SYNOPSIS
\fBlssubsys\fR [\fB-m|--mount-points\fR] [\fB-M|--all-mount-points\fR]
[\fIcontroller\fR] [...]
.br
\fBlssubsys\fR [\fB-m|--mount-points\fR] [\fB-M|--all-mount-points\fR]
[\fB-i|--hierarchies\fR] [\fB-a|--all\fR]
.br
\fBlssubsys\fR [\fB-h|--help\fR]
.SH DESCRIPTION
\fBlssubsys\fR list the hierarchies containing
the given subsystem(s). If no subsystem is defined, it
displays all mounted hierarchies.
.TP
.B controller
defines the subsystem whose hierarchy is shown.
If this parameter is not used, the command will
list all mounted subsystems.
.TP
.B -m, --mount-points
Display mount points. Only the first mount points of shown hierarchies are displayed.
.TP
.B -M, --all-mount-points
Display mount points. All mount points of shown hierarchies are displayed, each on
separate line.
.TP
.B -a, --all
Display all subsystems (including unmounted ones).
.TP
.B -i, --hierarchies
Display the attached hierarchy number if the subsystem is in a hierarchy.
If the option
.B -m
is also used, the hierarchy number is shown only for unmounted hierarchies.
.TP
.B -h, --help
Display help and exit.
.SH EXAMPLE
The command
.B lssubsys -am
lists all subsystems which are present in the system,
mounted ones will be shown with their mount point:
.RS
.nf
$ lssubsys -am
ns
cpuset
cpu,devices
cpuacct /cgroup/cpuacct
memory /cgroup/memory
freezer /cgroup/freezer
net_cls /cgroup/net_cls
.fi
.RE
.LP
The command
.B lssubsys -ami
lists all subsystems which are present in the system,
mounted subsystems are listed with their mount points,
unmounted ones which are in a hierarchy are listed with their hierarchy number:
.RS
.nf
$ lssubsys -ami
ns
cpuset 5
cpu,devices 6
cpuacct /cgroup/cpuacct
memory /cgroup/memory
freezer /cgroup/freezer
net_cls /cgroup/net_cls
.fi
.SH ENVIRONMENT VARIABLES
.TP
.B CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are \fBDEBUG\fR,
\fBINFO\fR, \fBWARNING\fR or \fBERROR\fR.
.RE
.SH SEE ALSO
lscgroup (1), cgcreate (1), cgdelete (1),
cgconfig.conf (5)

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# Using 'nobase_', we what groups.h in /usr/include/libcgroup/ directory
nobase_include_HEADERS = libcgroup.h libcgroup/error.h libcgroup/init.h libcgroup/groups.h libcgroup/tasks.h libcgroup/iterators.h libcgroup/config.h libcgroup/log.h

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/*
* Copyright IBM Corporation. 2007
*
* Author: Balbir Singh <balbir@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#ifndef _LIBCGROUP_H
#define _LIBCGROUP_H
#define _LIBCGROUP_H_INSIDE
#include <libcgroup/error.h>
#include <libcgroup/init.h>
#include <libcgroup/iterators.h>
#include <libcgroup/groups.h>
#include <libcgroup/tasks.h>
#include <libcgroup/config.h>
#include <libcgroup/log.h>
#undef _LIBCGROUP_H_INSIDE
/*! \mainpage libcgroup
*
* \section intro_sec Introduction
*
* @c libcgroup is a library that abstracts the control group file system in Linux.
* It comes with various command-line tools and configuration files, see
* their man pages for details.
*
* This documentation provides description of @c libcgroup API. Read following
* sections, preferably in this order:
* -# @ref group_init "Initialization"
* -# @ref group_groups "Control Groups"
* -# @ref group_iterators "Iterators"
* -# @ref group_tasks "Manipulation with tasks"
* -# @ref group_config "Configuration"
* -# @ref group_errors "Error Handling"
*/
#endif /* _LIBCGROUP_H */

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#ifndef _LIBCGROUP_CONFIG_H
#define _LIBCGROUP_CONFIG_H
#ifndef _LIBCGROUP_H_INSIDE
#error "Only <libcgroup.h> should be included directly."
#endif
#ifndef SWIG
#include <features.h>
#endif
__BEGIN_DECLS
/**
* @defgroup group_config 5. Configuration
* @{
*
* @name Configuration file
* @{
*
* @c libcgroup can mount and create control groups and set their parameters as
* specified in a configuration file.
*
* @todo add this description?: These functions are mostly intended
* to be used by internal @c libcgroup tools, however they are fully supported
* and applications can benefit from them.
*/
/**
* Load configuration file and mount and create control groups described there.
* See cgconfig.conf man page for format of the file.
* @param pathname Name of the configuration file to load.
*/
int cgroup_config_load_config(const char *pathname);
/**
* Delete all control groups and unmount all hierarchies.
*/
int cgroup_unload_cgroups(void);
/**
* Delete all cgroups and unmount all mount points defined in specified config
* file.
*
* The groups are either removed recursively or only the empty ones, based
* on given flags. Mount point are always umounted only if they are empty,
* regardless of any flags.
*
* The groups are sorted before they are removed, so the removal of empty ones
* actually works (i.e. subgroups are removed first).
*
* @param pathname Name of the configuration file to unload.
* @param flags Combination of CGFLAG_DELETE_* flags, which indicate what and
* how to delete.
*/
int cgroup_config_unload_config(const char *pathname, int flags);
/**
* Sets default permissions of groups created by subsequent
* cgroup_config_load_config() calls. If a config file contains a 'default {}'
* section, the default permissions from the config file is then used.
*
* Use cgroup_new_cgroup() to create a dummy group and cgroup_set_uid_gid() and
* cgroup_set_permissions() to set its permissions. Use NO_UID_GID instead of
* GID/UID and NO_PERMS instead of file/directory permissions to let kernel
* decide the default permissions where you don't want specific user and/or
* permissions. Kernel then uses current user/group and permissions from umask
* then.
*
* @param new_default New default permissions from this group are copied to
* libcgroup internal structures. I.e., this group can be freed immediatelly
* after this function returns.
*/
int cgroup_config_set_default(struct cgroup *new_default);
/**
* Initializes the templates cache and load it from file pathname.
*/
int cgroup_init_templates_cache(char *pathname);
/**
* Reloads the templates list from file pathname.
*/
int cgroup_reload_cached_templates(char *pathname);
/**
* Physically create a new control group in kernel, based on given control
* group template and configuration file. If given template is not set in
* configuration file, then the procedure works create the control group
* using cgroup_create_cgroup() function
*
* The flags can alter the behavior of this function:
* CGFLAG_USE_TEMPLATE_CACHE: Use cached templates instead of
* parsing the config file
*
* @param pathname Name of the configuration file with template definitions
* @param cgroup Wanted control group - contains substitute name and wanted
* controllers.
* @param template_name Template name used for cgroup setting
* @param flags Bit flags to change the behavior
*/
int cgroup_config_create_template_group(
struct cgroup *cgroup, char *template_name,
int flags);
/**
* @}
* @}
*/
__END_DECLS
#endif /*_LIBCGROUP_CONFIG_H*/

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#ifndef _LIBCGROUP_ERROR_H
#define _LIBCGROUP_ERROR_H
#ifndef _LIBCGROUP_H_INSIDE
#error "Only <libcgroup.h> should be included directly."
#endif
#ifndef SWIG
#include <features.h>
#endif
__BEGIN_DECLS
/**
* @defgroup group_errors 6. Error handling
* @{
*
* @name Error handling
* @{
* Unless states otherwise in documentation of a function, all functions
* return @c int, which is zero (0) when the function succeeds, and positive
* number if the function fails.
*
* The returned integer is one of the ECG* values described below. Value
* #ECGOTHER means that the error was caused by underlying OS and the real
* cause can be found by calling cgroup_get_last_errno().
*/
enum {
ECGROUPNOTCOMPILED = 50000,
ECGROUPNOTMOUNTED,
ECGROUPNOTEXIST,
ECGROUPNOTCREATED,
ECGROUPSUBSYSNOTMOUNTED,
ECGROUPNOTOWNER,
/** Controllers bound to different mount points */
ECGROUPMULTIMOUNTED,
/* This is the stock error. Default error. @todo really? */
ECGROUPNOTALLOWED,
ECGMAXVALUESEXCEEDED,
ECGCONTROLLEREXISTS,
ECGVALUEEXISTS,
ECGINVAL,
ECGCONTROLLERCREATEFAILED,
ECGFAIL,
ECGROUPNOTINITIALIZED,
ECGROUPVALUENOTEXIST,
/**
* Represents error coming from other libraries like glibc. @c libcgroup
* users need to check cgroup_get_last_errno() upon encountering this
* error.
*/
ECGOTHER,
ECGROUPNOTEQUAL,
ECGCONTROLLERNOTEQUAL,
/** Failed to parse rules configuration file. */
ECGROUPPARSEFAIL,
/** Rules list does not exist. */
ECGROUPNORULES,
ECGMOUNTFAIL,
/**
* Not an real error, it just indicates that iterator has come to end
* of sequence and no more items are left.
*/
ECGEOF = 50023,
/** Failed to parse config file (cgconfig.conf). */
ECGCONFIGPARSEFAIL,
ECGNAMESPACEPATHS,
ECGNAMESPACECONTROLLER,
ECGMOUNTNAMESPACE,
ECGROUPUNSUPP,
ECGCANTSETVALUE,
/** Removing of a group failed because it was not empty. */
ECGNONEMPTY,
};
/**
* Legacy definition of ECGRULESPARSEFAIL error code.
*/
#define ECGRULESPARSEFAIL ECGROUPPARSEFAIL
/**
* Format error code to a human-readable English string. No internationalization
* is currently done. Returned pointer leads to @c libcgroup memory and
* must not be freed nor modified. The memory is rewritten by subsequent
* call to this function.
* @param code Error code for which the corresponding error string is
* returned. When #ECGOTHER is used, text with glibc's description of
* cgroup_get_last_errno() value is returned.
*/
const char *cgroup_strerror(int code);
/**
* Return last errno, which caused ECGOTHER error.
*/
int cgroup_get_last_errno(void);
/**
* @}
* @}
*/
__END_DECLS
#endif /* _LIBCGROUP_INIT_H */

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#ifndef _LIBCGROUP_GROUPS_H
#define _LIBCGROUP_GROUPS_H
#ifndef _LIBCGROUP_H_INSIDE
#error "Only <libcgroup.h> should be included directly."
#endif
#ifndef SWIG
#include <features.h>
#include <sys/types.h>
#include <stdbool.h>
#endif
__BEGIN_DECLS
/**
* Flags for cgroup_delete_cgroup_ext().
*/
enum cgroup_delete_flag {
/**
* Ignore errors caused by migration of tasks to parent group.
*/
CGFLAG_DELETE_IGNORE_MIGRATION = 1,
/**
* Recursively delete all child groups.
*/
CGFLAG_DELETE_RECURSIVE = 2,
/**
* Delete the cgroup only if it is empty, i.e. it has no subgroups and
* no processes inside. This flag cannot be used with
* CGFLAG_DELETE_RECURSIVE.
*/
CGFLAG_DELETE_EMPTY_ONLY = 4,
};
/**
* @defgroup group_groups 2. Group manipulation API
* @{
*
* @name Basic infrastructure
* @{
* <tt>struct cgroup*</tt> is the heart of @c libcgroup API.
* The structure is opaque to applications, all access to the structure is
* through appropriate functions.
*
* The most important information is that <b> one <tt>struct cgroup*</tt> can
* represent zero, one or more real control groups in kernel</b>.
* The <tt>struct cgroup*</tt> is identified by name of the group, which must be
* set by cgroup_new_cgroup(). Multiple controllers (aka subsystems) can be
* attached to one <tt>struct cgroup*</tt> using cgroup_add_controller(). These
* controllers <b>can belong to different hierarchies</b>.
*
* This approach is different to the one in the Linux kernel - a control group
* must be part of exactly one hierarchy there. In @c libcgroup, a group can be
* part of multiple hierarchies, as long as the group name is the same.
*
* @par Example:
* Let there be following control groups:
* @code
* cpu,cpuacct:/
* cpu,cpuacct:/foo
* cpu,cpuacct:/bar
* freezer:/
* freezer:/foo
* @endcode
* I.e. there is @c cpu and @c cpuacct controller mounted together in one
* hierarchy, with @c foo and @c bar groups. In addition, @c freezer is
* mounted as separate hierarchy, with only one @c foo group.
*
* @par
* Following code creates <tt>struct cgroup*</tt> structure, which represents
* one group <tt>cpu,cpuacct:/foo</tt>:
* @code
* struct cgroup *foo = cgroup_new_cgroup("foo");
* cgroup_add_controller(foo, "cpu");
* @endcode
* Now, you can call e.g. cgroup_delete_cgroup() and the group is deleted from
* the hierarchy. You can note that it's enough to add only one controller to
* the group to fully identify a group in <tt>cpu,cpuacct</tt> hierarchy.
*
* @par
* Following code creates <tt>struct cgroup*</tt> structure, which represents
* @b two groups, <tt>cpu,cpuacct:/foo</tt> and <tt>freezer:/foo</tt>:
* @code
* struct cgroup *foo = cgroup_new_cgroup("foo");
* cgroup_add_controller(foo, "cpu");
* cgroup_add_controller(foo, "freezer");
* @endcode
* Now, if you call e.g. cgroup_delete_cgroup(), the group gets deleted from
* @b both hierarchies.
*
* @todo add some propaganda what's so great on this approach... I personally
* think it is broken and confusing (see TODOs below).
*
* Following functions are provided to create/destroy various libcgroup
* structures. Please note that none of these functions actually create or
* delete a cgroup in kernel!
*/
/**
* @struct cgroup
*
* Structure describing one or more control groups. The structure is opaque to
* applications.
*/
struct cgroup;
/**
* @struct cgroup_controller
* Structure describing a controller attached to one struct @c cgroup, including
* parameters of the group and their values. The structure is opaque to
* applications.
* @see groups
*/
struct cgroup_controller;
/**
* Uninitialized file/directory permissions used for task/control files.
*/
#define NO_PERMS (-1U)
/**
* Uninitialized UID/GID used for task/control files.
*/
#define NO_UID_GID (-1U)
/**
* Allocate new cgroup structure. This function itself does not create new
* control group in kernel, only new <tt>struct cgroup</tt> inside libcgroup!
*
* @param name Path to the group, relative from root group. Use @c "/" or @c "."
* for the root group itself and @c "/foo/bar/baz" or @c "foo/bar/baz" for
* subgroups.
* @todo suggest one preferred way, either "/foo" or "foo".
* @returns Created group or NULL on error.
*/
struct cgroup *cgroup_new_cgroup(const char *name);
/**
* Attach new controller to cgroup. This function just modifies internal
* libcgroup structure, not the kernel control group.
*
* @param cgroup
* @param name Name of the controller, e.g. "freezer".
* @return Created controller or NULL on error.
*/
struct cgroup_controller *cgroup_add_controller(struct cgroup *cgroup,
const char *name);
/**
* Return appropriate controller from given group.
* The controller must be added before using cgroup_add_controller() or loaded
* from kernel using cgroup_get_cgroup().
* @param cgroup
* @param name Name of the controller, e.g. "freezer".
*/
struct cgroup_controller *cgroup_get_controller(struct cgroup *cgroup,
const char *name);
/**
* Free internal @c cgroup structure. This function frees also all controllers
* attached to the @c cgroup, including all parameters and their values.
* @param cgroup
*/
void cgroup_free(struct cgroup **cgroup);
/**
* Free internal list of controllers from the group.
* @todo should this function be public???
* @param cgroup
*/
void cgroup_free_controllers(struct cgroup *cgroup);
/**
* @}
* @name Group manipulation API
* Using following functions you can create and remove control groups and
* change their parameters.
* @note All access to kernel is through previously mounted cgroup filesystems.
* @c libcgroup does not mount/unmount anything for you.
* @{
*/
/**
* Physically create a control group in kernel. The group is created in all
* hierarchies, which cover controllers added by cgroup_add_controller().
* All parameters set by cgroup_add_value_* functions are written.
* The created groups has owner which was set by cgroup_set_uid_gid() and
* permissions set by cgroup_set_permissions.
* @param cgroup
* @param ignore_ownership When nozero, all errors are ignored when setting
* owner of the group and/or its tasks file.
* @todo what is ignore_ownership good for?
* @retval #ECGROUPNOTEQUAL if not all specified controller parameters
* were successfully set.
*/
int cgroup_create_cgroup(struct cgroup *cgroup, int ignore_ownership);
/**
* Physically create new control group in kernel, with all parameters and values
* copied from its parent group. The group is created in all hierarchies, where
* the parent group exists. I.e. following code creates subgroup in all
* hierarchies, because all of them have root (=parent) group.
* @code
* struct cgroup *foo = cgroup_new_cgroup("foo");
* cgroup_create_cgroup_from_parent(foo, 0);
* @endcode
* @todo what is this good for? Why the list of controllers added by
* cgroup_add_controller() is not used, like in cgroup_create_cgroup()? I can't
* crate subgroup of root group in just one hierarchy with this function!
*
* @param cgroup The cgroup to create. Only it's name is used, everything else
* is discarded.
* @param ignore_ownership When nozero, all errors are ignored when setting
* owner of the group and/or its tasks file.
* @todo what is ignore_ownership good for?
* @retval #ECGROUPNOTEQUAL if not all inherited controller parameters
* were successfully set (this is expected).
*/
int cgroup_create_cgroup_from_parent(struct cgroup *cgroup,
int ignore_ownership);
/**
* Physically modify a control group in kernel. All parameters added by
* cgroup_add_value_ or cgroup_set_value_ are written.
* Currently it's not possible to change and owner of a group.
*
* @param cgroup
*/
int cgroup_modify_cgroup(struct cgroup *cgroup);
/**
* Physically remove a control group from kernel. The group is removed from
* all hierarchies, which cover controllers added by cgroup_add_controller()
* or cgroup_get_cgroup(). All tasks inside the group are automatically moved
* to parent group.
*
* The group being removed must be empty, i.e. without subgroups. Use
* cgroup_delete_cgroup_ext() for recursive delete.
*
* @param cgroup
* @param ignore_migration When nozero, all errors are ignored when migrating
* tasks from the group to the parent group.
* @todo what is ignore_migration good for? rmdir() will fail if tasks were not moved.
*/
int cgroup_delete_cgroup(struct cgroup *cgroup, int ignore_migration);
/**
* Physically remove a control group from kernel.
* All tasks are automatically moved to parent group.
* If #CGFLAG_DELETE_IGNORE_MIGRATION flag is used, the errors that occurred
* during the task movement are ignored.
* #CGFLAG_DELETE_RECURSIVE flag specifies that all subgroups should be removed
* too. If root group is being removed with this flag specified, all subgroups
* are removed but the root group itself is left undeleted.
* @see cgroup_delete_flag.
*
* @param cgroup
* @param flags Combination of CGFLAG_DELETE_* flags, which indicate what and
* how to delete.
*/
int cgroup_delete_cgroup_ext(struct cgroup *cgroup, int flags);
/**
* @}
* @name Other functions
* @{
* Helper functions to manipulate with control groups.
*/
/**
* Read all information regarding the group from kernel.
* Based on name of the group, list of controllers and all parameters and their
* values are read from all hierarchies, where a group with given name exists.
* All existing controllers are replaced. I.e. following code will fill @c root
* with controllers from all hierarchies, because the root group is available in
* all of them.
* @code
* struct cgroup *root = cgroup_new_cgroup("/");
* cgroup_get_cgroup(root);
* @endcode
*
* @todo what is this function good for? Why is not considered only the list of
* controllers attached by cgroup_add_controller()? What owners will return
* cgroup_get_uid_gid() if the group is in multiple hierarchies, each with
* different owner of tasks file?
*
* @param cgroup The cgroup to load. Only it's name is used, everything else
* is replaced.
*/
int cgroup_get_cgroup(struct cgroup *cgroup);
/**
* Copy all controllers, their parameters and values. Group name, permissions
* and ownerships are not coppied. All existing controllers
* in the source group are discarded.
*
* @param dst Destination group.
* @param src Source group.
*/
int cgroup_copy_cgroup(struct cgroup *dst, struct cgroup *src);
/**
* Compare names, owners, controllers, parameters and values of two groups.
*
* @param cgroup_a
* @param cgroup_b
*
* @retval 0 if the groups are the same.
* @retval #ECGROUPNOTEQUAL if the groups are not the same.
* @retval #ECGCONTROLLERNOTEQUAL if the only difference are controllers,
* parameters or their values.
*/
int cgroup_compare_cgroup(struct cgroup *cgroup_a, struct cgroup *cgroup_b);
/**
* Compare names, parameters and values of two controllers.
*
* @param cgca
* @param cgcb
*
* @retval 0 if the controllers are the same.
* @retval #ECGCONTROLLERNOTEQUAL if the controllers are not equal.
*/
int cgroup_compare_controllers(struct cgroup_controller *cgca,
struct cgroup_controller *cgcb);
/**
* Set owner of the group control files and the @c tasks file. This function
* modifies only @c libcgroup internal @c cgroup structure, use
* cgroup_create_cgroup() afterwards to create the group with given owners.
*
* @param cgroup
* @param tasks_uid UID of the owner of group's @c tasks file.
* @param tasks_gid GID of the owner of group's @c tasks file.
* @param control_uid UID of the owner of group's control files (i.e.
* parameters).
* @param control_gid GID of the owner of group's control files (i.e.
* parameters).
*/
int cgroup_set_uid_gid(struct cgroup *cgroup, uid_t tasks_uid, gid_t tasks_gid,
uid_t control_uid, gid_t control_gid);
/**
* Return owners of the group's @c tasks file and control files.
* The data is read from @c libcgroup internal @c cgroup structure, use
* cgroup_set_uid_gid() or cgroup_get_cgroup() to fill it.
*/
int cgroup_get_uid_gid(struct cgroup *cgroup, uid_t *tasks_uid,
gid_t *tasks_gid, uid_t *control_uid, gid_t *control_gid);
/**
* Stores given file permissions of the group's control and tasks files
* into the @c cgroup data structure. Use NO_PERMS if permissions shouldn't
* be changed or a value which applicable to chmod(2). Please note that
* the given permissions are masked with the file owner's permissions.
* For example if a control file has permissions 640 and control_fperm is
* 471 the result will be 460.
* @param cgroup
* @param control_dperm Directory permission for the group.
* @param control_fperm File permission for the control files.
* @param task_fperm File permissions for task file.
*/
void cgroup_set_permissions(struct cgroup *cgroup,
mode_t control_dperm, mode_t control_fperm,
mode_t task_fperm);
/**
* @}
* @name Group parameters
* These are functions can read or modify parameter of a group.
* @note All these functions read/write parameters to @c libcgorup internal
* structures. Use cgroup_get_cgroup() to load parameters from kernel to these
* internal structures and cgroup_modify_cgroup() or cgroup_create_cgroup() to
* write changes to kernel.
* @{
*/
/**
* Add parameter and its value to internal @c libcgroup structures.
* Use cgroup_modify_cgroup() or cgroup_create_cgroup() to write it to kernel.
*
* @param controller
* @param name Name of the parameter.
* @param value
*
*/
int cgroup_add_value_string(struct cgroup_controller *controller,
const char *name, const char *value);
/**
* Add parameter and its value to internal @c libcgroup structures.
* Use cgroup_modify_cgroup() or cgroup_create_cgroup() to write it to kernel.
* Content of the value is copied to internal structures and is not needed
* after return from the function.
*
* @param controller
* @param name Name of the parameter.
* @param value
*
*/
int cgroup_add_value_int64(struct cgroup_controller *controller,
const char *name, int64_t value);
/**
* Add parameter and its value to internal @c libcgroup structures.
* Use cgroup_modify_cgroup() or cgroup_create_cgroup() to write it to kernel.
*
* @param controller
* @param name Name of the parameter.
* @param value
*
*/
int cgroup_add_value_uint64(struct cgroup_controller *controller,
const char *name, u_int64_t value);
/**
* Add parameter and its value to internal @c libcgroup structures.
* Use cgroup_modify_cgroup() or cgroup_create_cgroup() to write it to kernel.
*
* @param controller
* @param name Name of the parameter.
* @param value
*
*/
int cgroup_add_value_bool(struct cgroup_controller *controller,
const char *name, bool value);
/**
* Read a parameter value from @c libcgroup internal structures.
* Use @c cgroup_get_cgroup() to fill these structures with data from kernel.
* It's up to the caller to free returned value.
*
* This function works only for 'short' parameters. Use
* cgroup_read_stats_begin(), cgroup_read_stats_next() and
* cgroup_read_stats_end() to read @c stats parameter, which can be longer
* than libcgroup's internal buffers.
* @todo rephrase, it's too vague... How big is the buffer actually?
*
* @param controller
* @param name Name of the parameter.
* @param value
*/
int cgroup_get_value_string(struct cgroup_controller *controller,
const char *name, char **value);
/**
* Read a parameter value from @c libcgroup internal structures.
* Use @c cgroup_get_cgroup() to fill these structures with data from kernel.
*
* @param controller
* @param name Name of the parameter.
* @param value
*/
int cgroup_get_value_int64(struct cgroup_controller *controller,
const char *name, int64_t *value);
/**
* Read a parameter value from @c libcgroup internal structures.
* Use @c cgroup_get_cgroup() to fill these structures with data from kernel.
*
* @param controller
* @param name Name of the parameter.
* @param value
*/
int cgroup_get_value_uint64(struct cgroup_controller *controller,
const char *name, u_int64_t *value);
/**
* Read a parameter value from @c libcgroup internal structures.
* Use @c cgroup_get_cgroup() to fill these structures with data from kernel.
*
* @param controller
* @param name Name of the parameter.
* @param value
*/
int cgroup_get_value_bool(struct cgroup_controller *controller,
const char *name, bool *value);
/**
* Set a parameter value in @c libcgroup internal structures.
* Use cgroup_modify_cgroup() or cgroup_create_cgroup() to write it to kernel.
*
* @param controller
* @param name Name of the parameter.
* @param value
*/
int cgroup_set_value_string(struct cgroup_controller *controller,
const char *name, const char *value);
/**
* Set a parameter value in @c libcgroup internal structures.
* Use cgroup_modify_cgroup() or cgroup_create_cgroup() to write it to kernel.
* Content of the value is copied to internal structures and is not needed
* after return from the function.
*
* @param controller
* @param name Name of the parameter.
* @param value
*/
int cgroup_set_value_int64(struct cgroup_controller *controller,
const char *name, int64_t value);
/**
* Set a parameter value in @c libcgroup internal structures.
* Use cgroup_modify_cgroup() or cgroup_create_cgroup() to write it to kernel.
*
* @param controller
* @param name Name of the parameter.
* @param value
*/
int cgroup_set_value_uint64(struct cgroup_controller *controller,
const char *name, u_int64_t value);
/**
* Set a parameter value in @c libcgroup internal structures.
* Use cgroup_modify_cgroup() or cgroup_create_cgroup() to write it to kernel.
*
* @param controller
* @param name Name of the parameter.
* @param value
*/
int cgroup_set_value_bool(struct cgroup_controller *controller,
const char *name, bool value);
/**
* Return the number of variables for the specified controller in @c libcgroup
* internal structures. Use cgroup_get_cgroup() to fill these structures with
* data from kernel. Use this function together with cgroup_get_value_name()
* to list all parameters of a group.
*
* @param controller
* @return Count of the parameters or -1 on error.
*/
int cgroup_get_value_name_count(struct cgroup_controller *controller);
/**
* Return the name of parameter of controller at given index.
* The index goes from 0 to cgroup_get_value_name_count()-1.
* Use this function to list all parameter of the controller.
*
* @note The returned value is pointer to internal @c libcgroup structure,
* do not free it.
*
* @param controller
* @param index Index of the parameter.
* @return Name of the parameter.
*/
char *cgroup_get_value_name(struct cgroup_controller *controller, int index);
/**
* Get the list of process in a cgroup. This list is guaranteed to
* be sorted. It is not necessary that it is unique.
* @param name The name of the cgroup
* @param controller The name of the controller
* @param pids The list of pids. Should be uninitialized when passed
* to the API. Should be freed by the caller using free.
* @param size The size of the pids array returned by the API.
*/
int cgroup_get_procs(char *name, char *controller, pid_t **pids, int *size);
/**
* Change permission of files and directories of given group
* @param cgroup The cgroup which permissions should be changed
* @param dir_mode The permission mode of group directory
* @param dirm_change Denotes whether the directory change should be done
* @param file_mode The permission mode of group files
* @param filem_change Denotes whether the directory change should be done
*/
int cg_chmod_recursive(struct cgroup *cgroup, mode_t dir_mode,
int dirm_change, mode_t file_mode, int filem_change);
/**
* Get the name of the cgroup from a given cgroup
* @param cgroup The cgroup whose name is needed
*/
char *cgroup_get_cgroup_name(struct cgroup *cgroup);
/**
* @}
* @}
*/
__END_DECLS
#endif /* _LIBCGROUP_GROUPS_H */

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#ifndef _LIBCGROUP_INIT_H
#define _LIBCGROUP_INIT_H
#ifndef _LIBCGROUP_H_INSIDE
#error "Only <libcgroup.h> should be included directly."
#endif
#ifndef SWIG
#include <features.h>
#endif
__BEGIN_DECLS
/**
* @defgroup group_init 1. Initialization
* @{
*
* @name Initialization
* @{
* Application must initialize @c libcgroup using cgroup_init() before any
* other @c libcgroup function can be called. @c libcgroup caches information
* about mounted hierarchies (just what's mounted where, not the control groups
* themselves) at this time. There is currently no way to refresh this cache,
* i.e. all subsequent mounts/remounts/unmounts are not reflected in this cache
* and @c libcgroup may produce unexpected results.
*
* In addition, there is no way how to clean the cache on application exit.
*
* @todo this is very bad... There should be at least way how to refresh the
* cache and/or an option to refresh it automatically (does kernel provide
* any indication, when a filesystem is mounted/unmounted?). Dtto the cleanup
* on exit.
*/
/**
* Initialize libcgroup. Information about mounted hierarchies are examined
* and cached internally (just what's mounted where, not the groups themselves).
*
* If the cgroup logging was not set using cgroup_set_logger() or
* cgroup_set_default_logger() before calling cgroup_init(), the default logger
* is automatically set, logging CGROUP_LOG_ERROR messages.
*/
int cgroup_init(void);
/**
* Returns path where is mounted given controller. Applications should rely on
* @c libcgroup API and not call this function directly.
* Only the first mount point is returned, use
* cgroup_get_subsys_mount_point_begin(), cgroup_get_subsys_mount_point_next()
* and cgroup_get_subsys_mount_point_end() to get all of them.
* @param controller Name of the controller
* @param mount_point The string where the mount point location is stored.
* Please note, the caller must free the mount_point.
*/
int cgroup_get_subsys_mount_point(const char *controller, char **mount_point);
/**
* @}
* @}
*/
__END_DECLS
#endif /* _LIBCGROUP_INIT_H */

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#ifndef _LIBCGROUP_ITERATORS_H
#define _LIBCGROUP_ITERATORS_H
#ifndef _LIBCGROUP_H_INSIDE
#error "Only <libcgroup.h> should be included directly."
#endif
#ifndef SWIG
#include <sys/types.h>
#include <stdio.h>
#include <features.h>
#endif
__BEGIN_DECLS
/**
* @defgroup group_iterators 3. Iterators
* @{
* So-called iterators are a code pattern to retrieve various data from
* libcgroup in distinct chunks, for example when an application needs to read
* list of groups in a hierarchy, it uses iterator to get one group at a time.
* Iterator is opaque to the application, the application sees only
* <tt>void* handle</tt> pointer, which is managed internally by @c libcgroup.
* Each iterator provides at least these functions:
* - <tt>int <i>iterator_name</i>_begin(void **handle, my_type *item)</tt>
* - Initialize the iterator, store pointer to it into the @c handle.
* - Return the first element in the iterator, let's say it's @c my_type.
* - Return @c 0, if the operation succeeded.
* - Return #ECGEOF, if the operation succeeded, but the iterator is empty.
* The value of @c item is undefined in this case.
* - Return any other error code on error.
* - <tt>int <i>iterator_name</i>_next(void **handle, my_type *item)</tt>
* - Advance to next element in the iterator and return it.
* - Return @c 0, if the operation succeeded.
* - Return #ECGEOF, if there is no item to advance to, i.e. the iterator
* is already at its end. The value of @c item is undefined in this case.
* - Return any other error code on error.
* - <tt>void <i>iterator_name</i>_end(void **handle)</tt>
* - Free any data associated with the iterator. This function must be
* called even when <tt><i>iterator_name</i>_begin()</tt> fails.
*
* @todo not all iterators follow this pattern, e.g. cgroup_walk_tree_begin()
* can result both in a state that cgroup_walk_tree_end() is not needed
* and will sigsegv and in a state that cgroup_walk_tree_end() is needed
* to free allocated memory. Complete review is needed!
* @par Example of iterator usage:
* @code
* void *handle; // our iterator handle
* my_type item; // the data returned by the iterator
* int ret;
* ret = iterator_name_begin(&handle, &item);
* while (ret == 0) {
* // process the item here
* ret = iterator_name_begin(&handle, &item);
* }
* if (ret != ECGEOF) {
* // process the error here
* }
* iterator_name_end(&handle);
* @endcode
*
* @name Walk through control group filesystem
* @{
* This iterator returns all subgroups of given control group. It can be used
* to return all groups in given hierarchy, when root control group is provided.
*/
/**
* Type of the walk.
*/
enum cgroup_walk_type {
/**
* Pre-order directory walk, return a directory first and then its
* subdirectories.
* E.g. directories would be returned in this order:
* @code
* /
* /group
* /group/subgroup1
* /group/subgroup1/subsubgroup
* /group/subgroup2
* @endcode
*/
CGROUP_WALK_TYPE_PRE_DIR = 0x1,
/**
* Post-order directory walk, return subdirectories of a directory
* first and then the directory itself.
* E.g. directories would be returned in this order:
* @code
* /group/subgroup1/subsubgroup
* /group/subgroup1
* /group/subgroup2
* /group
* /
* @endcode
*/
CGROUP_WALK_TYPE_POST_DIR = 0x2,
};
/**
* Type of returned entity.
*/
enum cgroup_file_type {
CGROUP_FILE_TYPE_FILE, /**< File. */
CGROUP_FILE_TYPE_DIR, /**< Directory. */
CGROUP_FILE_TYPE_OTHER, /**< Directory. @todo really? */
};
/**
* Information about found directory (= a control group).
*/
struct cgroup_file_info {
/** Type of the entity. */
enum cgroup_file_type type;
/** Name of the entity. */
const char *path;
/** Name of its parent. */
const char *parent;
/**
* Full path to the entity. To get path relative to the root of the
* walk, you must store its @c full_path (or its length)
* and calculate the relative path by yourself.
*/
const char *full_path;
/**
* Depth of the entity, how many directories below the root of
* walk it is.
*/
short depth;
};
/**
* Walk through the directory tree for the specified controller.
* The directory representing @c base_path is returned in @c info.
* Use cgroup_walk_tree_set_flags() to specify, in which order should be next
* directories returned.
* @param controller Name of the controller, for which we want to walk
* the directory tree.
* @param base_path Begin walking from this path. Use "/" to walk through
* full hierarchy.
* @param depth The maximum depth to which the function should walk, 0
* implies all the way down.
* @param handle Handle to be used during iteration.
* @param info Info filled and returned about directory information.
* @param base_level Opaque integer which you must pass to subsequent
* cgroup_walk_tree_next.
* @todo why base_level is not hidden in **handle?
* @return #ECGEOF when there is no node.
*/
int cgroup_walk_tree_begin(const char *controller, const char *base_path, int depth,
void **handle, struct cgroup_file_info *info,
int *base_level);
/**
* Get the next directory in the walk.
* @param depth The maximum depth to which the function should walk, 0
* implies all the way down.
* @param handle Handle to be used during iteration.
* @param info Info filled and returned about the next directory.
* @param base_level Value of base_level returned by cgroup_walk_tree_begin().
* @return #ECGEOF when we are done walking through the nodes.
*/
int cgroup_walk_tree_next(int depth, void **handle,
struct cgroup_file_info *info, int base_level);
/**
* Release the iterator.
*/
int cgroup_walk_tree_end(void **handle);
/**
* Set the flags for walk_tree. Currently available flags are in
* #cgroup_walk_type enum.
* @param handle Handle of the iterator.
* @param flags
*/
int cgroup_walk_tree_set_flags(void **handle, int flags);
/**
* Read the value of the given variable for the specified
* controller and control group.
* The value is read up to newline character or at most max-1 characters,
* whichever comes first (i.e. similar to fgets()).
* @param controller Name of the controller for which stats are requested.
* @param path Path to control group, relative to hierarchy root.
* @param name is variable name.
* @param handle Handle to be used during iteration.
* @param buffer Buffer to read the value into.
* The buffer is always zero-terminated.
* @param max Maximal lenght of the buffer
* @return #ECGEOF when the stats file is empty.
*/
int cgroup_read_value_begin(const char *controller, const char *path,
char *name, void **handle, char *buffer, int max);
/**
* Read the next string from the given variable handle
* which is generated by cgroup_read_stats_begin() function.
* the value is read up to newline character or at most max-1 characters,
* whichever comes first (i.e. similar to fgets()) per
* cgroup_read_stats_next() call
* @param handle Handle to be used during iteration.
* @param data returned the string.
* @param buffer Buffer to read the value into.
* The buffer is always zero-terminated.
* @param max Maximal lenght of the buffer
* @return #ECGEOF when the iterator finishes getting the list of stats.
*/
int cgroup_read_value_next(void **handle, char *buffer, int max);
/**
* Release the iterator.
*/
int cgroup_read_value_end(void **handle);
/**
* @}
*
* @name Read group stats
* libcgroup's cgroup_get_value_string() reads only relatively short parametrs
* of a group. Use following functions to read @c stats parameter, which can
* be quite long.
*/
/**
* Maximum length of a value in stats file.
*/
#define CG_VALUE_MAX 100
/**
* One item in stats file.
*/
struct cgroup_stat {
char name[FILENAME_MAX];
char value[CG_VALUE_MAX];
};
/**
* Read the statistics values (= @c stats parameter) for the specified
* controller and control group. One line is returned per
* cgroup_read_stats_begin() and cgroup_read_stats_next() call.
* @param controller Name of the controller for which stats are requested.
* @param path Path to control group, relative to hierarchy root.
* @param handle Handle to be used during iteration.
* @param stat Returned first item in the stats file.
* @return #ECGEOF when the stats file is empty.
*/
int cgroup_read_stats_begin(const char *controller, const char *path, void **handle,
struct cgroup_stat *stat);
/**
* Read the next stat value.
* @param handle Handle to be used during iteration.
* @param stat Returned next item in the stats file.
* @return #ECGEOF when the iterator finishes getting the list of stats.
*/
int cgroup_read_stats_next(void **handle, struct cgroup_stat *stat);
/**
* Release the iterator.
*/
int cgroup_read_stats_end(void **handle);
/**
* @}
*
* @name List all tasks in a group
* Use following functions to read @c tasks file of a group.
* @{
*/
/**
* Read the tasks file to get the list of tasks in a cgroup.
* @param cgroup Name of the cgroup.
* @param controller Name of the cgroup subsystem.
* @param handle Handle to be used in the iteration.
* @param pid The pid read from the tasks file.
* @return #ECGEOF when the group does not contain any tasks.
*/
int cgroup_get_task_begin(const char *cgroup, const char *controller, void **handle,
pid_t *pid);
/**
* Read the next task value.
* @param handle The handle used for iterating.
* @param pid The variable where the value will be stored.
*
* @return #ECGEOF when the iterator finishes getting the list of tasks.
*/
int cgroup_get_task_next(void **handle, pid_t *pid);
/**
* Release the iterator.
*/
int cgroup_get_task_end(void **handle);
/**
* @}
*
* @name List mounted controllers
* Use following function to list mounted controllers and to see, how they
* are mounted together in hierarchies.
* Use cgroup_get_all_controller_begin() (see later) to list all controllers,
* including those which are not mounted.
* @{
*/
/**
* Information about mounted controller.
*/
struct cgroup_mount_point {
/** Name of the controller. */
char name[FILENAME_MAX];
/** Mount point of the controller. */
char path[FILENAME_MAX];
};
/**
* Read the mount table to give a list where each controller is
* mounted.
* @param handle Handle to be used for iteration.
* @param info The variable where the path to the controller is stored.
* @return #ECGEOF when no controllers are mounted.
*/
int cgroup_get_controller_begin(void **handle, struct cgroup_mount_point *info);
/**
* Read the next mounted controller.
* While walking through the mount table, the controllers are
* returned in order of their mount points, i.e. controllers mounted together
* in one hierarchy are returned next to each other.
* @param handle Handle to be used for iteration.
* @param info The variable where the path to the controller is stored.
* @return #ECGEOF when all controllers were already returned.
*/
int cgroup_get_controller_next(void **handle, struct cgroup_mount_point *info);
/**
* Release the iterator.
*/
int cgroup_get_controller_end(void **handle);
/**
* @}
*
* @name List all controllers
* Use following functions to list all controllers, including those which are
* not mounted. The controllers are returned in the same order as in
* /proc/cgroups file, i.e. mostly random.
*/
/**
* Detailed information about available controller.
*/
struct controller_data {
/** Controller name. */
char name[FILENAME_MAX];
/**
* Hierarchy ID. Controllers with the same hierarchy ID
* are mounted together as one hierarchy. Controllers with
* ID 0 are not currently mounted anywhere.
*/
int hierarchy;
/** Number of groups. */
int num_cgroups;
/** Enabled flag. */
int enabled;
};
/**
* Read the first of controllers from /proc/cgroups.
* @param handle Handle to be used for iteration.
* @param info The structure which will be filled with controller data.
*/
int cgroup_get_all_controller_begin(void **handle,
struct controller_data *info);
/**
* Read next controllers from /proc/cgroups.
* @param handle Handle to be used for iteration.
* @param info The structure which will be filled with controller data.
*/
int cgroup_get_all_controller_next(void **handle, struct controller_data *info);
/**
* Release the iterator
*/
int cgroup_get_all_controller_end(void **handle);
/**
* @}
*
* @name List all mount points of a controller.
* Use following functions to list all mount points of a hierarchy with given
* controller.
*/
/**
* Read the first mount point of the hierarchy with given controller.
* The first is the same as the mount point returned by
* cgroup_get_subsys_mount_point().
* @param handle Handle to be used for iteration.
* @param controller Controller name.
* @param path Buffer to fill the path into. The buffer must be at least
* FILENAME_MAX characters long.
*/
int cgroup_get_subsys_mount_point_begin(const char *controller, void **handle,
char *path);
/**
* Read next mount point of the hierarchy with given controller.
* @param handle Handle to be used for iteration.
* @param path Buffer to fill the path into. The buffer must be at least
* FILENAME_MAX characters long.
*/
int cgroup_get_subsys_mount_point_next(void **handle,
char *path);
/**
* Release the iterator.
*/
int cgroup_get_subsys_mount_point_end(void **handle);
/**
* @}
* @}
*/
__END_DECLS
#endif /* _LIBCGROUP_ITERATORS_H */

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libcgroup-0.41/include/libcgroup/log.h Normal file
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#ifndef _LIBCGROUP_LOG_H
#define _LIBCGROUP_LOG_H
#ifndef _LIBCGROUP_H_INSIDE
#error "Only <libcgroup.h> should be included directly."
#endif
#ifndef SWIG
#include <features.h>
#endif
#include <stdarg.h>
__BEGIN_DECLS
/**
* @defgroup group_log 7. Logging
* @{
*
* @name Logging
* @{
* Libcgroup allows applications to register a callback function which
* libcgroup will call when it wants to log something. Each log message
* has associated a log level. As described in previous chapter, most libcgroup
* functions return an error code, which described root cause of the failure
* and log messages might provide further details about these failures and other
* notable events.
*
* @par
* The logging callback can be set at any time, but setting the callback before
* any other libcgroup function (including cgroup_init()) is highly recommended.
* If no logger is set before cgroup_init() is called, default logger is
* automatically set, logging CGROUP_LOG_ERROR messages to stdout.
*
* @par Setting log level
* Some of the functions below set the log level as integer.
* Application can set directly a value of enum #cgroup_log_level or use
* value <tt>-1</tt> to set the log level automatically. In this case, libcgroup
* inspects environment variable <tt>CGROUP_LOGLEVEL</tt> if it is set
* and contains any of these values: <tt>ERROR</tt>, <tt>WARNING</tt>,
* <tt>INFO</tt>, <tt>DEBUG</tt> or integer number representing value from
* enum #cgroup_log_level. If <tt>CGROUP_LOGLEVEL</tt> is not set or its value
* is not valid, <tt>CGROUP_LOG_ERROR</tt> is set as default log level.
*
* @par Example:
* Following short example shows custom libcgroup logger sending all log
* messages to <tt>stderr</tt>:
* @code
* static void my_logger(void *userdata, int level, const char *fmt, va_list ap)
* {
* vfprintf(stderr, fmt, ap);
* }
*
* int main(int argc, char **argv)
* {
* int ret;
*
* cgroup_set_logger(my_logger, -1, NULL);
* ret = cgroup_init();
* if (ret) {
* ...
* }
* ...
* @endcode
*/
/**
* Level of importance of a log message.
*/
enum cgroup_log_level {
/**
* Something serious happened and libcgroup failed to perform requested
* operation.
*/
CGROUP_LOG_ERROR = 1,
/**
* Something bad happened but libcgroup recovered from the error.
*/
CGROUP_LOG_WARNING,
/**
* Something interesting happened and the message might be useful to the
* user.
*/
CGROUP_LOG_INFO,
/**
* Debugging messages useful to libcgroup developers.
*/
CGROUP_LOG_DEBUG,
};
typedef void (*cgroup_logger_callback)(void *userdata, int level,
const char *fmt, va_list ap);
/**
* Set libcgroup logging callback. All log messages with equal or lower log
* level will be sent to the application's callback. There can be only
* one callback logger set, the previous callback is replaced with the new one
* by calling this function.
* Use NULL as the logger callback to completely disable libcgroup logging.
*
* @param logger The callback.
* @param loglevel The log level. Use value -1 to automatically discover the
* level from CGROUP_LOGLEVEL environment variable.
* @param userdata Application's data which will be provided back to the
* callback.
*/
extern void cgroup_set_logger(cgroup_logger_callback logger, int loglevel,
void *userdata);
/**
* Set libcgroup logging to stdout. All messages with the given loglevel
* or below will be sent to standard output. Previous logger set by
* cgroup_set_logger() is replaced.
*
* @param loglevel The log level. Use value -1 to automatically discover the
* level from CGROUP_LOGLEVEL environment variable.
*/
extern void cgroup_set_default_logger(int loglevel);
/**
* Change current loglevel.
* @param loglevel The log level. Use value -1 to automatically discover the
* level from CGROUP_LOGLEVEL environment variable.
*/
extern void cgroup_set_loglevel(int loglevel);
/**
* Libcgroup log function. This is for applications which are too lazy to set
* up their own complex logging and miss-use libcgroup for that purpose.
* I.e. this function should be used only by simple command-line tools.
* This logging automatically benefits from CGROUP_LOGLEVEL env. variable.
*/
extern void cgroup_log(int loglevel, const char *fmt, ...);
/**
* Parse levelstr string for information about desired loglevel. The levelstr
* is usually a value of the CGROUP_LOGLEVEL environment variable.
* @param levelstr String containing desired loglevel.
*/
extern int cgroup_parse_log_level_str(const char *levelstr);
/**
* @}
* @}
*/
__END_DECLS
#endif /* _LIBCGROUP_LOG_H */

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#ifndef _LIBCGROUP_TASKS_H
#define _LIBCGROUP_TASKS_H
#ifndef _LIBCGROUP_H_INSIDE
#error "Only <libcgroup.h> should be included directly."
#endif
#include <libcgroup/groups.h>
#ifndef SWIG
#include <features.h>
#include <stdbool.h>
#endif
__BEGIN_DECLS
/** Flags for cgroup_change_cgroup_uid_gid(). */
enum cgflags {
/** Use cached rules, do not read rules from disk. */
CGFLAG_USECACHE = 0x01,
/** Use cached templates, do not read templates from disk. */
CGFLAG_USE_TEMPLATE_CACHE = 0x02,
};
/** Flags for cgroup_register_unchanged_process(). */
enum cgroup_daemon_type {
/**
* The daemon must not touch the given task, i.e. it never moves it
* to any controlgroup.
*/
CGROUP_DAEMON_UNCHANGE_CHILDREN = 0x1,
CGROUP_DAEMON_CANCEL_UNCHANGE_PROCESS = 0x2,
};
/**
* @defgroup group_tasks 4. Manipulation with tasks
* @{
*
* @name Simple task assignment
* @{
* Applications can use following functions to simply put a task into given
* control group and find a groups where given tasks is.
*/
/**
* Move current task (=thread) to given control group.
* @param cgroup Destination control group.
*/
int cgroup_attach_task(struct cgroup *cgroup);
/**
* Move given task (=thread) to to given control group.
* @param cgroup Destination control group.
* @param tid The task to move.
*/
int cgroup_attach_task_pid(struct cgroup *cgroup, pid_t tid);
/**
* Changes the cgroup of a task based on the path provided. In this case,
* the user must already know into which cgroup the task should be placed and
* no rules will be parsed.
*
* @param path Name of the destination group.
* @param pid The task to move.
* @param controllers List of controllers.
*
* @todo should this function be really public?
*/
int cgroup_change_cgroup_path(const char *path, pid_t pid,
const char * const controllers[]);
/**
* Get the current control group path where the given task is.
* @param pid The task to find.
* @param controller The controller (hierarchy), where to find the task.
* @param current_path The path to control group, where the task has been found.
* The patch is relative to the root of the hierarchy. The caller must
* free this memory.
*/
int cgroup_get_current_controller_path(pid_t pid, const char *controller,
char **current_path);
/**
* @}
*
* @name Rules
* @{
* @c libcgroup can move tasks to control groups using simple rules, loaded
* from configuration file. See cgrules.conf man page to see format of the file.
* Following functions can be used to load these rules from a file.
*/
/**
* Initializes the rules cache and load it from /etc/cgrules.conf.
* @todo add parameter with the filename?
*/
int cgroup_init_rules_cache(void);
/**
* Reloads the rules list from /etc/cgrules.conf. This function
* is probably NOT thread safe (calls cgroup_parse_rules_config()).
*/
int cgroup_reload_cached_rules(void);
/**
* Print the cached rules table. This function should be called only after
* first calling cgroup_parse_config(), but it will work with an empty rule
* list.
* @param fp Destination file, where the rules will be printed.
*/
void cgroup_print_rules_config(FILE *fp);
/**
* @}
* @name Rule based task assignment
* @{
* @c libcgroup can move tasks to control groups using simple rules, loaded
* from configuration file. See cgrules.conf man page to see format of the file.
* Applications can move tasks to control groups based on these rules using
* following functions.
*/
/**
* Changes the cgroup of all running PIDs based on the rules in the config
* file. If a rules exists for a PID, then the PID is placed in the correct
* group.
*
* This function may be called after creating new control groups to move
* running PIDs into the newly created control groups.
* @return 0 on success, < 0 on error
*/
int cgroup_change_all_cgroups(void);
/**
* Changes the cgroup of a program based on the rules in the config file.
* If a rule exists for the given UID, GID or PROCESS NAME, then the given
* PID is placed into the correct group. By default, this function parses
* the configuration file each time it is called.
*
* The flags can alter the behavior of this function:
* CGFLAG_USECACHE: Use cached rules instead of parsing the config file
* CGFLAG_USE_TEMPLATE_CACHE: Use cached templates instead of
* parsing the config file
*
* This function may NOT be thread safe.
* @param uid The UID to match.
* @param gid The GID to match.
* @param procname The PROCESS NAME to match.
* @param pid The PID of the process to move.
* @param flags Bit flags to change the behavior, as defined in enum #cgflags.
* @todo Determine thread-safeness and fix of not safe.
*/
int cgroup_change_cgroup_flags(uid_t uid, gid_t gid,
const char *procname, pid_t pid, int flags);
/**
* Changes the cgroup of a program based on the rules in the config file. If a
* rule exists for the given UID or GID, then the given PID is placed into the
* correct group. By default, this function parses the configuration file each
* time it is called.
*
* This function may NOT be thread safe.
* @param uid The UID to match.
* @param gid The GID to match.
* @param pid The PID of the process to move.
* @param flags Bit flags to change the behavior, as defined in enum #cgflags.
* @todo Determine thread-safeness and fix if not safe.
*/
int cgroup_change_cgroup_uid_gid_flags(uid_t uid, gid_t gid,
pid_t pid, int flags);
/**
* Provides backwards-compatibility with older versions of the API. This
* function is deprecated, and cgroup_change_cgroup_uid_gid_flags() should be
* used instead. In fact, this function simply calls the newer one with flags
* set to 0 (none).
* @param uid The UID to match.
* @param gid The GID to match.
* @param pid The PID of the process to move.
*/
int cgroup_change_cgroup_uid_gid(uid_t uid, gid_t gid, pid_t pid);
/**
* @}
* @name Communication with cgrulesengd daemon
* @{
* Users can use cgrulesengd daemon to move tasks to groups based on the rules
* automatically when they change their UID, GID or executable name.
* The daemon allows tasks to be 'sticky', i.e. all rules are ignored for these
* tasks and the daemon never moves them.
*/
/**
* Register the unchanged process to a cgrulesengd daemon. This process
* is never moved to another control group by the daemon.
* If the daemon does not work, this function returns 0 as success.
* @param pid The task id.
* @param flags Bit flags to change the behavior, as defined in
* #cgroup_daemon_type
*/
int cgroup_register_unchanged_process(pid_t pid, int flags);
/**
* @}
* @}
*/
__END_DECLS
#endif /* _LIBCGROUP_TASKS_H */

527
libcgroup-0.41/install-sh Executable file
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#!/bin/sh
# install - install a program, script, or datafile
scriptversion=2011-11-20.07; # UTC
# This originates from X11R5 (mit/util/scripts/install.sh), which was
# later released in X11R6 (xc/config/util/install.sh) with the
# following copyright and license.
#
# Copyright (C) 1994 X Consortium
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name of the X Consortium shall not
# be used in advertising or otherwise to promote the sale, use or other deal-
# ings in this Software without prior written authorization from the X Consor-
# tium.
#
#
# FSF changes to this file are in the public domain.
#
# Calling this script install-sh is preferred over install.sh, to prevent
# 'make' implicit rules from creating a file called install from it
# when there is no Makefile.
#
# This script is compatible with the BSD install script, but was written
# from scratch.
nl='
'
IFS=" "" $nl"
# set DOITPROG to echo to test this script
# Don't use :- since 4.3BSD and earlier shells don't like it.
doit=${DOITPROG-}
if test -z "$doit"; then
doit_exec=exec
else
doit_exec=$doit
fi
# Put in absolute file names if you don't have them in your path;
# or use environment vars.
chgrpprog=${CHGRPPROG-chgrp}
chmodprog=${CHMODPROG-chmod}
chownprog=${CHOWNPROG-chown}
cmpprog=${CMPPROG-cmp}
cpprog=${CPPROG-cp}
mkdirprog=${MKDIRPROG-mkdir}
mvprog=${MVPROG-mv}
rmprog=${RMPROG-rm}
stripprog=${STRIPPROG-strip}
posix_glob='?'
initialize_posix_glob='
test "$posix_glob" != "?" || {
if (set -f) 2>/dev/null; then
posix_glob=
else
posix_glob=:
fi
}
'
posix_mkdir=
# Desired mode of installed file.
mode=0755
chgrpcmd=
chmodcmd=$chmodprog
chowncmd=
mvcmd=$mvprog
rmcmd="$rmprog -f"
stripcmd=
src=
dst=
dir_arg=
dst_arg=
copy_on_change=false
no_target_directory=
usage="\
Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
or: $0 [OPTION]... SRCFILES... DIRECTORY
or: $0 [OPTION]... -t DIRECTORY SRCFILES...
or: $0 [OPTION]... -d DIRECTORIES...
In the 1st form, copy SRCFILE to DSTFILE.
In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
In the 4th, create DIRECTORIES.
Options:
--help display this help and exit.
--version display version info and exit.
-c (ignored)
-C install only if different (preserve the last data modification time)
-d create directories instead of installing files.
-g GROUP $chgrpprog installed files to GROUP.
-m MODE $chmodprog installed files to MODE.
-o USER $chownprog installed files to USER.
-s $stripprog installed files.
-t DIRECTORY install into DIRECTORY.
-T report an error if DSTFILE is a directory.
Environment variables override the default commands:
CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
RMPROG STRIPPROG
"
while test $# -ne 0; do
case $1 in
-c) ;;
-C) copy_on_change=true;;
-d) dir_arg=true;;
-g) chgrpcmd="$chgrpprog $2"
shift;;
--help) echo "$usage"; exit $?;;
-m) mode=$2
case $mode in
*' '* | *' '* | *'
'* | *'*'* | *'?'* | *'['*)
echo "$0: invalid mode: $mode" >&2
exit 1;;
esac
shift;;
-o) chowncmd="$chownprog $2"
shift;;
-s) stripcmd=$stripprog;;
-t) dst_arg=$2
# Protect names problematic for 'test' and other utilities.
case $dst_arg in
-* | [=\(\)!]) dst_arg=./$dst_arg;;
esac
shift;;
-T) no_target_directory=true;;
--version) echo "$0 $scriptversion"; exit $?;;
--) shift
break;;
-*) echo "$0: invalid option: $1" >&2
exit 1;;
*) break;;
esac
shift
done
if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
# When -d is used, all remaining arguments are directories to create.
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prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
Name: libcgroup
Description: Control Group Configuration Library
Version: @PACKAGE_VERSION@
Libs: -L${libdir} -lcgroup
Cflags: -I${includedir}

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EXTRA_DIST = cgconfig.conf cgred.conf cgrules.conf cgconfig.sysconfig \
cgsnapshot_blacklist.conf

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17
libcgroup-0.41/samples/cgconfig.conf Normal file
View File

@ -0,0 +1,17 @@
#
# Copyright IBM Corporation. 2007
#
# Authors: Balbir Singh <balbir@linux.vnet.ibm.com>
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2.1 of the GNU Lesser General Public License
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
#
# By default, we expect systemd mounts everything on boot,
# so there is not much to do.
# See man cgconfig.conf for further details, how to create groups
# on system boot using this file.

48
libcgroup-0.41/samples/cgconfig.conf.config-patch Normal file
View File

@ -0,0 +1,48 @@
#
# Copyright IBM Corporation. 2007
#
# Authors: Balbir Singh <balbir@linux.vnet.ibm.com>
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2.1 of the GNU Lesser General Public License
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
#group daemons/www {
# perm {
# task {
# uid = root;
# gid = webmaster;
# }
# admin {
# uid = root;
# gid = root;
# }
# }
# cpu {
# cpu.shares = 1000;
# }
#}
#
#group daemons/ftp {
# perm {
# task {
# uid = root;
# gid = ftpmaster;
# }
# admin {
# uid = root;
# gid = root;
# }
# }
# cpu {
# cpu.shares = 500;
# }
#}
#
#mount {
# cpu = /mnt/cgroups/cpu;
# cpuacct = /mnt/cgroups/cpuacct;
#}

10
libcgroup-0.41/samples/cgconfig.sysconfig Normal file
View File

@ -0,0 +1,10 @@
# Service cgconfig can create a default group in all mounted hierarchies and
# move all processes there on boot. If no default rule is specified in
# /etc/cgrules.conf, the default group is named '/sysdefault'.
# This automatically created group(s) can be useful e.g. when using 'cpu'
# controller to limit cpu.shares of this default group and allowing some more
# important group take most of the CPU.
#
# By default, do not create these groups:
# CREATE_DEFAULT=yes
CREATE_DEFAULT=no

12
libcgroup-0.41/samples/cgconfig.sysconfig.config-patch Normal file
View File

@ -0,0 +1,12 @@
# Service cgconfig can create a default group in all mounted hierarchies and
# move all processes there on boot. If no default rule is specified in
# /etc/cgrules.conf, the default group is named '/sysdefault'.
# This automatically created group(s) can be useful e.g. when using 'cpu'
# controller to limit cpu.shares of this default group and allowing some more
# important group take most of the CPU.
#
# By default, create these groups:
CREATE_DEFAULT=yes
# Uncomment following line to disable creation of the default group on startup:
# CREATE_DEFAULT=no

27
libcgroup-0.41/samples/cgred.conf Normal file
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@ -0,0 +1,27 @@
# /etc/sysconfig/cgred.conf - CGroup Rules Engine Daemon configuration file
#
# The four options listed below (CONFIG_FILE, LOG_FILE, NODAEMON, LOG) are
# the only valid ones. Defining anything else in this file will cause the
# CGroup Rules Engine program to fail. So, don't do it.
# The pathname to the configuration file for CGroup Rules Engine
CONFIG_FILE="/etc/cgrules.conf"
# Uncomment the following line to log to specified file instead of syslog
#LOG_FILE="/var/log/cgrulesengd.log"
# Uncomment the second line to run CGroup Rules Engine in non-daemon mode
NODAEMON=""
#NODAEMON="--nodaemon"
# Set owner of cgred socket. 'cgexec' tool should have write access there
# (either using suid and/or sgid permissions or Linux capabilities).
SOCKET_USER=""
SOCKET_GROUP="cgred"
# Uncomment the second line to disable logging for CGroup Rules Engine
# Uncomment the third line to enable more verbose logging.
LOG=""
#LOG="--nolog"
#LOG="-v"

10
libcgroup-0.41/samples/cgrules.conf Normal file
View File

@ -0,0 +1,10 @@
# /etc/cgrules.conf
#The format of this file is described in cgrules.conf(5)
#manual page.
#
# Example:
#<user> <controllers> <destination>
#@student cpu,memory usergroup/student/
#peter cpu test1/
#% memory test2/
# End of file

20
libcgroup-0.41/samples/cgsnapshot_blacklist.conf Normal file
View File

@ -0,0 +1,20 @@
#cgsnapshot tool configuration file
#memory
memory.oom_control
#cpu
#cpuacct
#devices
#cpuset
#ns
#freezer
#net_cls
#blkio

11
libcgroup-0.41/scripts/Makefile.am Normal file
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@ -0,0 +1,11 @@
EXTRA_DIST = init.d/cgconfig.in init.d/cgred.in
if WITH_INITSCRIPT_INSTALL
INITSCRIPTDIR=$(DESTDIR)$(sysconfdir)/rc.d/init.d
install-exec-hook:
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$(INSTALL_SCRIPT) init.d/cgconfig init.d/cgred $(INITSCRIPTDIR)
uninstall-hook:
rm -f $(INITSCRIPTDIR)/cgconfig $(INITSCRIPTDIR)/cgred
endif

445
libcgroup-0.41/scripts/Makefile.in Normal file
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@ -0,0 +1,445 @@
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206
libcgroup-0.41/scripts/init.d/cgconfig.in Normal file
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@ -0,0 +1,206 @@
#!/bin/bash
#
# Start/Stop the workload manager
#
# Copyright IBM Corporation. 2008
#
# Authors: Balbir Singh <balbir@linux.vnet.ibm.com>
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2.1 of the GNU Lesser General Public License
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# cgconfig Control Groups Configuration Startup
# chkconfig: - 5 95
# description: This script runs the cgconfigparser utility to parse and setup
# the control group filesystem. It uses /etc/cgconfig.conf
# and parses the configuration specified in there.
### BEGIN INIT INFO
# Provides: cgconfig
# Required-Start:
# Required-Stop:
# Should-Start: ypbind
# Should-Stop: ypbind
# Short-Description: Create and setup control group filesystem(s)
# Description: Create and setup control group filesystem(s)
### END INIT INFO
# get correct location of binaries from configure
prefix=@prefix@;exec_prefix=@exec_prefix@;sbindir=@sbindir@
CGCONFIGPARSER_BIN=$sbindir/cgconfigparser
CONFIG_FILE=/etc/cgconfig.conf
servicename=cgconfig
lockfile=/var/lock/subsys/$servicename
#
# Source LSB routines
#
. /lib/lsb/init-functions
# read the config
CREATE_DEFAULT=yes
if [ -e /etc/sysconfig/cgconfig ]; then
. /etc/sysconfig/cgconfig
fi
create_default_groups() {
defaultcgroup=
if [ -f /etc/cgrules.conf ]; then
read user ctrl defaultcgroup <<< \
$(grep -m1 '^\*[[:space:]]\+' /etc/cgrules.conf)
if [ -n "$defaultcgroup" -a "$defaultcgroup" = "*" ]; then
log_warning_msg "/etc/cgrules.conf incorrect"
log_warning_msg "Overriding it"
defaultcgroup=
fi
fi
if [ -z $defaultcgroup ]
then
defaultcgroup=sysdefault/
fi
#
# Find all mounted subsystems and create comma-separated list
# of controllers.
#
controllers=`lssubsys 2>/dev/null | tr '\n' ',' | sed s/.$//`
#
# Create the default group, ignore errors when the default group
# already exists.
#
cgcreate -f 664 -d 775 -g $controllers:$defaultcgroup 2>/dev/null
#
# special rule for cpusets
#
if echo $controllers | grep -q -w cpuset; then
cpus=`cgget -nv -r cpuset.cpus /`
cgset -r cpuset.cpus=$cpus $defaultcgroup
mems=`cgget -nv -r cpuset.mems /`
cgset -r cpuset.mems=$mems $defaultcgroup
fi
#
# Classify everything to default cgroup. Ignore errors, some processes
# may exit after ps is run and before cgclassify moves them.
#
cgclassify -g $controllers:$defaultcgroup `ps --no-headers -eL o tid` \
2>/dev/null || :
}
start() {
echo -n "Starting cgconfig service: "
if [ -f "$lockfile" ]; then
log_warning_msg "lock file already exists"
return 0
fi
if [ $? -eq 0 ]; then
if [ ! -s $CONFIG_FILE ]; then
log_failure_msg $CONFIG_FILE "is not configured"
return 6
fi
$CGCONFIGPARSER_BIN -l $CONFIG_FILE
retval=$?
if [ $retval -ne 0 ]; then
log_failure_msg "Failed to parse " $CONFIG_FILE
return 1
fi
fi
if [ $CREATE_DEFAULT = "yes" ]; then
create_default_groups
fi
touch "$lockfile"
retval=$?
if [ $retval -ne 0 ]; then
log_failure_msg "Failed to touch $lockfile"
return 1
fi
log_success_msg
return 0
}
stop() {
echo -n "Stopping cgconfig service: "
cgclear
rm -f "$lockfile"
log_success_msg
return 0
}
trapped() {
#
# Do nothing
#
true
}
usage() {
echo "$0 <start|stop|restart|condrestart|status>"
exit 2
}
common() {
#
# main script work done here
#
trap "trapped ABRT" ABRT
trap "trapped QUIT" QUIT
trap "trapped TERM" TERM
trap "trapped INT" INT
}
restart() {
common
stop
start
}
RETVAL=0
case $1 in
'stop')
common
stop
RETVAL=$?
;;
'start')
common
start
RETVAL=$?
;;
'restart'|'reload')
restart
RETVAL=$?
;;
'condrestart')
if [ -f "$lockfile" ]; then
restart
RETVAL=$?
fi
;;
'status')
if [ -f "$lockfile" ]; then
echo "Running"
exit 0
else
echo "Stopped"
exit 3
fi
;;
*)
usage
;;
esac
exit $RETVAL

161
libcgroup-0.41/scripts/init.d/cgred.in Normal file
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@ -0,0 +1,161 @@
#!/bin/bash
#
# Start/Stop the CGroups Rules Engine Daemon
#
# Copyright Red Hat Inc. 2008
#
# Authors: Steve Olivieri <sjo@redhat.com>
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2.1 of the GNU Lesser General Public License
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# cgred CGroups Rules Engine Daemon
# chkconfig: - 14 86
# description: This is a daemon for automatically classifying processes \
# into cgroups based on UID/GID.
#
# processname: cgrulesengd
# pidfile: /var/run/cgred.pid
#
### BEGIN INIT INFO
# Provides: cgrulesengd
# Required-Start: $local_fs $syslog $cgconfig
# Required-Stop: $local_fs $syslog
# Should-Start:
# Should-Stop:
# Short-Description: start and stop the cgroups rules engine daemon
# Description: CGroup Rules Engine is a tool for automatically using \
# cgroups to classify processes
### END INIT INFO
prefix=@prefix@;exec_prefix=@exec_prefix@;sbindir=@sbindir@
CGRED_BIN=$sbindir/cgrulesengd
CGRED_CONF=/etc/cgrules.conf
# Sanity checks
[ -x $CGRED_BIN ] || exit 1
# Source function library & LSB routines
. /etc/rc.d/init.d/functions
. /lib/lsb/init-functions
# Read in configuration options.
if [ -f "/etc/sysconfig/cgred.conf" ] ; then
. /etc/sysconfig/cgred.conf
OPTIONS="$NODAEMON $LOG"
if [ -n "$LOG_FILE" ]; then
OPTIONS="$OPTIONS --logfile=$LOG_FILE"
fi
if [ -n "$SOCKET_USER" ]; then
OPTIONS="$OPTIONS -u $SOCKET_USER"
fi
if [ -n "$SOCKET_GROUP" ]; then
OPTIONS="$OPTIONS -g $SOCKET_GROUP"
fi
else
OPTIONS=""
fi
# For convenience
processname=cgrulesengd
servicename=cgred
lockfile="/var/lock/subsys/$servicename"
pidfile=/var/run/cgred.pid
start()
{
echo -n $"Starting CGroup Rules Engine Daemon: "
if [ -f "$lockfile" ]; then
log_failure_msg "$servicename is already running with PID `cat ${pidfile}`"
return 0
fi
num=`grep "cgroup" /proc/mounts | awk '$3=="cgroup"' | wc -l`
if [ $num -eq 0 ]; then
echo
log_failure_msg $"Cannot find cgroups, is cgconfig service running?"
return 1
fi
daemon --check $servicename --pidfile $pidfile $CGRED_BIN $OPTIONS
retval=$?
echo
if [ $retval -ne 0 ]; then
return 7
fi
touch "$lockfile"
if [ $? -ne 0 ]; then
return 1
fi
echo "`pidof $processname`" > $pidfile
return 0
}
stop()
{
echo -n $"Stopping CGroup Rules Engine Daemon..."
if [ ! -f $pidfile ]; then
log_success_msg
return 0
fi
killproc -p $pidfile -TERM "$processname"
retval=$?
echo
if [ $retval -ne 0 ]; then
return 1
fi
rm -f "$lockfile" "$pidfile"
return 0
}
RETVAL=0
# See how we are called
case "$1" in
start)
start
RETVAL=$?
;;
stop)
stop
RETVAL=$?
;;
status)
status -p $pidfile $servicename
RETVAL=$?
;;
restart)
stop
start
RETVAL=$?
;;
condrestart)
if [ -f "$lockfile" ]; then
stop
start
RETVAL=$?
fi
;;
reload|flash)
if [ -f "$lockfile" ]; then
echo $"Reloading rules configuration..."
kill -s 12 `cat ${pidfile}`
RETVAL=$?
if [ $RETVAL -eq 0 ] ; then
log_success_msg
else
log_failure_msg
fi
else
log_failure_msg "$servicename is not running."
fi
;;
*)
echo $"Usage: $0 {start|stop|status|restart|condrestart|reload}"
RETVAL=2
;;
esac
exit $RETVAL

18
libcgroup-0.41/src/Makefile.am Normal file
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@ -0,0 +1,18 @@
if WITH_BINDINGS
BINDINGS_SUBDIR = bindings
endif
SUBDIRS = . daemon pam tools $(BINDINGS_SUBDIR)
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AM_YFLAGS = -d
CLEANFILES = lex.c parse.c parse.h
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libcgroup_la_LIBADD = -lpthread
libcgroup_la_LDFLAGS = -Wl,--version-script,$(srcdir)/libcgroup.map \
-version-number $(LIBRARY_VERSION_MAJOR):$(LIBRARY_VERSION_MINOR):$(LIBRARY_VERSION_RELEASE)

803
libcgroup-0.41/src/Makefile.in Normal file
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@ -0,0 +1,803 @@
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/*
* Copyright Red Hat Inc. 2008
*
* Author: Steve Olivieri <sjo@redhat.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef _CGRULESENGD_H
#define _CGRULESENGD_H
#include <features.h>
__BEGIN_DECLS
#include "config.h"
#include "libcgroup.h"
#include <linux/connector.h>
#include <linux/cn_proc.h>
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#ifndef __USE_GNU
#define __USE_GNU
#endif
/* The following ten macros are all for the Netlink code. */
#define SEND_MESSAGE_LEN (NLMSG_LENGTH(sizeof(struct cn_msg) + \
sizeof(enum proc_cn_mcast_op)))
#define RECV_MESSAGE_LEN (NLMSG_LENGTH(sizeof(struct cn_msg) + \
sizeof(struct proc_event)))
#define SEND_MESSAGE_SIZE (NLMSG_SPACE(SEND_MESSAGE_LEN))
#define RECV_MESSAGE_SIZE (NLMSG_SPACE(RECV_MESSAGE_LEN))
#define BUFF_SIZE (max(max(SEND_MESSAGE_SIZE, RECV_MESSAGE_SIZE), 1024))
#define MIN_RECV_SIZE (min(SEND_MESSAGE_SIZE, RECV_MESSAGE_SIZE))
#define PROC_CN_MCAST_LISTEN (1)
#define PROC_CN_MCAST_IGNORE (2)
/**
* Prints the usage information for this program and, optionally, an error
* message. This function uses vfprintf.
* @param fd The file stream to print to
* @param msg The error message to print (printf style)
* @param ... Any args to msg (printf style)
*/
void cgre_usage(FILE *fd, const char *msg, ...);
/**
* Prints a formatted message (like printf()) to all log destinations.
* Flushes the file stream's buffer so that the message is immediately
* readable.
* @param level The log level (LOG_EMERG ... LOG_DEBUG)
* @param format The format for the message (printf style)
* @param ... Any args to format (printf style)
*/
void flog(int level, const char *msg, ...);
/**
* Process an event from the kernel, and determine the correct UID/GID/PID to
* pass to libcgroup. Then, libcgroup will decide the cgroup to move the PID
* to, if any.
* @param ev The event to process
* @param type The type of event to process (part of ev)
* @return 0 on success, > 0 on failure
*/
int cgre_process_event(const struct proc_event *ev, const int type);
/**
* Handle a netlink message. In the event of PROC_EVENT_UID or PROC_EVENT_GID,
* we pass the event along to cgre_process_event for further processing. All
* other events are ignored.
* @param cn_hdr The netlink message
* @return 0 on success, > 0 on error
*/
int cgre_handle_message(struct cn_msg *cn_hdr);
/**
* Turns this program into a daemon. In doing so, we fork() and kill the
* parent process. Note too that stdout, stdin, and stderr are closed in
* daemon mode, and a file descriptor for a log file is opened.
* @param logp Path of the log file, NULL if no log file was specified
* @param logf Syslog facility, NULL if no facility was specified
* @param daemon False to turn off daemon mode (no fork, leave FDs open)
* @param logv Log verbosity, 2 is the default, 0 = no logging, 5 = everything
* @return 0 on success, > 0 on error
*/
int cgre_start_daemon(const char *logp, const int logf,
const unsigned char daemon, const int logv);
/**
* Catch the SIGUSR2 signal and reload the rules configuration. This function
* makes use of the logfile and flog() to print the new rules.
* @param signum The signal that we caught (always SIGUSR2)
*/
void cgre_flash_rules(int signum);
/**
* Catch the SIGUSR1 signal and reload the rules configuration. This function
* makes use of the logfile and flog() to print the new rules.
* @param signum The signal that we caught (always SIGUSR1)
*/
void cgre_flash_templates(int signum);
/**
* Catch the SIGTERM and SIGINT signal so that we can exit gracefully. Before
* exiting, this function makes use of the logfile and flog().
* @param signum The signal that we caught (SIGTERM, SIGINT)
*/
void cgre_catch_term(int signum);
__END_DECLS
#endif /* _CGRULESENGD_H */

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/*
* Copyright IBM Corporation. 2007
*
* Authors: Balbir Singh <balbir@linux.vnet.ibm.com>
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
%{
#include <string.h>
#include <libcgroup.h>
#include <libcgroup-internal.h>
#include "parse.h"
#pragma GCC diagnostic ignored "-Wunused-function"
int line_no = 1;
jmp_buf parser_error_env;
#define YY_FATAL_ERROR(msg) \
do { \
fprintf(stderr, "%s\n", msg); \
longjmp(parser_error_env, 1); \
} while(0);
%}
%option nounput noinput
%%
\n {line_no++;}
[ \t] {/* DO NOTHING */}
^[ \t]*#.*[ \t]* {/* Comments */}
^\*.*[ \t]* {/* Comments */}
"mount" {return MOUNT;}
"task" {return TASK;}
"admin" {return ADMIN;}
"perm" {return PERM;}
"group" {return GROUP;}
"namespace" {return NAMESPACE;}
"template" {return TEMPLATE;}
"default" {return DEFAULT;}
[a-zA-Z0-9_\-\/\.\,\%\@]+ {yylval.name = strdup(yytext); return ID;}
\"[^"]*\" {yylval.name = strdup(yytext+1); yylval.name[strlen(yylval.name)-1] = '\0'; return ID; }
. {return yytext[0];}
%%

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/*
* Copyright IBM Corporation. 2008
*
* Author: Dhaval Giani <dhaval@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#ifndef __LIBCG_INTERNAL
#define __LIBCG_INTERNAL
__BEGIN_DECLS
#include "config.h"
#include <fts.h>
#include <libcgroup.h>
#include <limits.h>
#include <pthread.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <setjmp.h>
/* Maximum number of mount points/controllers */
#define MAX_MNT_ELEMENTS 8
/* Estimated number of groups created */
#define MAX_GROUP_ELEMENTS 128
#define CG_NV_MAX 100
#define CG_CONTROLLER_MAX 100
/* Max number of mounted hierarchies. Event if one controller is mounted per
* hier, it can not exceed CG_CONTROLLER_MAX
*/
#define CG_HIER_MAX CG_CONTROLLER_MAX
/* Definitions for the uid and gid members of a cgroup_rules */
/* FIXME: These really should not be negative values */
#define CGRULE_INVALID ((uid_t) -1)
#define CGRULE_WILD ((uid_t) -2)
#define CGRULE_SUCCESS_STORE_PID "SUCCESS_STORE_PID"
#define CGCONFIG_CONF_FILE "/etc/cgconfig.conf"
#define CGRULES_CONF_FILE "/etc/cgrules.conf"
#define CGRULES_MAX_FIELDS_PER_LINE 3
#define CGROUP_BUFFER_LEN (5 * FILENAME_MAX)
/* Maximum length of a key(<user>:<process name>) in the daemon config file */
#define CGROUP_RULE_MAXKEY (LOGIN_NAME_MAX + FILENAME_MAX + 1)
/* Maximum length of a line in the daemon config file */
#define CGROUP_RULE_MAXLINE (FILENAME_MAX + CGROUP_RULE_MAXKEY + \
CG_CONTROLLER_MAX + 3)
#define cgroup_err(x...) cgroup_log(CGROUP_LOG_ERROR, x)
#define cgroup_warn(x...) cgroup_log(CGROUP_LOG_WARNING, x)
#define cgroup_info(x...) cgroup_log(CGROUP_LOG_INFO, x)
#define cgroup_dbg(x...) cgroup_log(CGROUP_LOG_DEBUG, x)
#define CGROUP_DEFAULT_LOGLEVEL CGROUP_LOG_ERROR
#define max(x,y) ((y)<(x)?(x):(y))
#define min(x,y) ((y)>(x)?(x):(y))
struct control_value {
char name[FILENAME_MAX];
char value[CG_VALUE_MAX];
bool dirty;
};
struct cgroup_controller {
char name[FILENAME_MAX];
struct control_value *values[CG_NV_MAX];
struct cgroup *cgroup;
int index;
};
struct cgroup {
char name[FILENAME_MAX];
struct cgroup_controller *controller[CG_CONTROLLER_MAX];
int index;
uid_t tasks_uid;
gid_t tasks_gid;
mode_t task_fperm;
uid_t control_uid;
gid_t control_gid;
mode_t control_fperm;
mode_t control_dperm;
};
struct cg_mount_point {
char path[FILENAME_MAX];
struct cg_mount_point *next;
};
struct cg_mount_table_s {
/** Controller name. */
char name[FILENAME_MAX];
/**
* List of mount points, at least one mount point is there for sure.
*/
struct cg_mount_point mount;
int index;
};
struct cgroup_rules_data {
pid_t pid; /* pid of the process which needs to change group */
/* Details of user under consideration for destination cgroup */
struct passwd *pw;
/* Gid of the process */
gid_t gid;
};
/* A rule that maps UID/GID to a cgroup */
struct cgroup_rule {
uid_t uid;
gid_t gid;
char *procname;
char username[LOGIN_NAME_MAX];
char destination[FILENAME_MAX];
char *controllers[MAX_MNT_ELEMENTS];
struct cgroup_rule *next;
};
/* Container for a list of rules */
struct cgroup_rule_list {
struct cgroup_rule *head;
struct cgroup_rule *tail;
int len;
};
/*The walk_tree handle */
struct cgroup_tree_handle {
FTS *fts;
int flags;
};
/**
* Internal item of dictionary. Linked list is sufficient for now - we need
* only 'add' operation and simple iterator. In future, this might be easily
* rewritten to dynamic array when random access is needed,
* just keep in mind that the order is important and the iterator should
* return the items in the order they were added there.
*/
struct cgroup_dictionary_item {
const char *name;
const char *value;
struct cgroup_dictionary_item *next;
};
/* Flags for cgroup_dictionary_create */
/**
* All items (i.e. both name and value strings) stored in the dictionary
* should *NOT* be free()d on cgroup_dictionary_free(),
* only the dictionary helper structures (i.e. underlying linked list)
* should be freed.
*/
#define CG_DICT_DONT_FREE_ITEMS 1
/**
* Dictionary of (name, value) items.
* The dictionary keeps its order, iterator iterates in the same order
* as the items were added there. It is *not* hash-style structure,
* it does not provide random access to its items nor quick search.
* This structure should be opaque to users of the dictionary, underlying data
* structure might change anytime and without warnings.
*/
struct cgroup_dictionary {
struct cgroup_dictionary_item *head;
struct cgroup_dictionary_item *tail;
int flags;
};
/** Opaque iterator of an dictionary. */
struct cgroup_dictionary_iterator {
struct cgroup_dictionary_item *item;
};
/**
* per thread errno variable, to be used when return code is ECGOTHER
*/
extern __thread int last_errno;
/**
* 'Exception handler' for lex parser.
*/
extern jmp_buf parser_error_env;
/* Internal API */
char *cg_build_path(const char *name, char *path, const char *type);
int cgroup_get_uid_gid_from_procfs(pid_t pid, uid_t *euid, gid_t *egid);
int cgroup_get_procname_from_procfs(pid_t pid, char **procname);
int cg_mkdir_p(const char *path);
struct cgroup *create_cgroup_from_name_value_pairs(const char *name,
struct control_value *name_value, int nv_number);
void init_cgroup_table(struct cgroup *cgroups, size_t count);
/*
* Main mounting structures
*/
extern struct cg_mount_table_s cg_mount_table[CG_CONTROLLER_MAX];
extern pthread_rwlock_t cg_mount_table_lock;
/*
* config related structures
*/
extern __thread char *cg_namespace_table[CG_CONTROLLER_MAX];
/*
* config related API
*/
int cgroup_config_insert_cgroup(char *cg_name);
int cgroup_config_parse_controller_options(char *controller,
struct cgroup_dictionary *values);
int template_config_insert_cgroup(char *cg_name);
int template_config_parse_controller_options(char *controller,
struct cgroup_dictionary *values);
int template_config_group_task_perm(char *perm_type, char *value);
int template_config_group_admin_perm(char *perm_type, char *value);
int cgroup_config_group_task_perm(char *perm_type, char *value);
int cgroup_config_group_admin_perm(char *perm_type, char *value);
int cgroup_config_insert_into_mount_table(char *name, char *mount_point);
int cgroup_config_insert_into_namespace_table(char *name, char *mount_point);
void cgroup_config_cleanup_mount_table(void);
void cgroup_config_cleanup_namespace_table(void);
int cgroup_config_define_default(void);
/**
* Create an empty dictionary.
*/
extern int cgroup_dictionary_create(struct cgroup_dictionary **dict,
int flags);
/**
* Add an item to existing dictionary.
*/
extern int cgroup_dictionary_add(struct cgroup_dictionary *dict,
const char *name, const char *value);
/**
* Fully destroy existing dictionary. Depending on flags passed to
* cgroup_dictionary_create(), names and values might get destroyed too.
*/
extern int cgroup_dictionary_free(struct cgroup_dictionary *dict);
/**
* Start iterating through a dictionary. The items are returned in the same
* order as they were added using cgroup_dictionary_add().
*/
extern int cgroup_dictionary_iterator_begin(struct cgroup_dictionary *dict,
void **handle, const char **name, const char **value);
/**
* Continue iterating through the dictionary.
*/
extern int cgroup_dictionary_iterator_next(void **handle,
const char **name, const char **value);
/**
* Finish iteration through the dictionary.
*/
extern void cgroup_dictionary_iterator_end(void **handle);
/**
* Changes permissions for given path. If owner_is_umask is specified
* then it uses owner permissions as a mask for group and others permissions.
*
* @param path Patch to chmod.
* @param mode File permissions to set.
* @param owner_is_umask Flag whether path owner permissions should be used
* as a mask for group and others permissions.
*/
int cg_chmod_path(const char *path, mode_t mode, int owner_is_umask);
__END_DECLS
#endif

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CGROUP_0.32 {
global:
cgroup_init;
cgroup_attach_task;
cgroup_modify_cgroup;
cgroup_create_cgroup;
cgroup_delete_cgroup;
cgroup_attach_task_pid;
cgroup_get_cgroup;
cgroup_create_cgroup_from_parent;
cgroup_copy_cgroup;
cgroup_change_cgroup_uid_gid;
cgroup_change_cgroup_path;
cgroup_new_cgroup;
cgroup_add_controller;
cgroup_free;
cgroup_free_controllers;
cgroup_add_value_string;
cgroup_add_value_int64;
cgroup_add_value_uint64;
cgroup_add_value_bool;
cgroup_compare_cgroup;
cgroup_compare_controllers;
cgroup_set_uid_gid;
cgroup_get_uid_gid;
cgroup_get_value_string;
cgroup_set_value_string;
cgroup_get_value_int64;
cgroup_set_value_int64;
cgroup_get_value_uint64;
cgroup_set_value_uint64;
cgroup_get_value_bool;
cgroup_set_value_bool;
cgroup_change_cgroup_uid_gid_flags;
cgroup_print_rules_config;
cgroup_reload_cached_rules;
cgroup_init_rules_cache;
cgroup_get_current_controller_path;
cgroup_config_load_config;
local:
*;
};
CGROUP_0.32.1 {
global:
cgroup_strerror;
} CGROUP_0.32;
CGROUP_0.33 {
global:
cgroup_get_last_errno;
cgroup_walk_tree_begin;
cgroup_walk_tree_next;
cgroup_walk_tree_end;
} CGROUP_0.32.1;
CGROUP_0.34 {
global:
cgroup_get_task_begin;
cgroup_get_task_end;
cgroup_get_task_next;
cgroup_read_stats_begin;
cgroup_read_stats_next;
cgroup_read_stats_end;
cgroup_walk_tree_set_flags;
cgroup_get_controller_end;
cgroup_get_controller_next;
cgroup_get_controller_begin;
cgroup_unload_cgroups;
cgroup_get_controller;
cgroup_get_uid_gid_from_procfs;
cgroup_get_subsys_mount_point;
cgroup_get_procname_from_procfs;
cgroup_register_unchanged_process;
cgroup_change_cgroup_flags;
} CGROUP_0.33;
CGROUP_0.35 {
global:
create_cgroup_from_name_value_pairs;
cgroup_delete_cgroup_ext;
cgroup_get_all_controller_begin;
cgroup_get_all_controller_next;
cgroup_get_all_controller_end;
cgroup_get_value_name_count;
cgroup_get_value_name;
} CGROUP_0.34;
CGROUP_0.36 {
} CGROUP_0.35;
CGROUP_0.37 {
cgroup_get_procs;
cgroup_read_value_begin;
cgroup_read_value_next;
cgroup_read_value_end;
cg_chmod_recursive;
} CGROUP_0.36;
CGROUP_0.38 {
cgroup_get_subsys_mount_point_begin;
cgroup_get_subsys_mount_point_next;
cgroup_get_subsys_mount_point_end;
cgroup_set_permissions;
cgroup_config_unload_config;
cgroup_config_set_default;
} CGROUP_0.37;
CGROUP_0.39 {
cgroup_reload_cached_templates;
cgroup_init_templates_cache;
cgroup_config_create_template_group;
cgroup_change_all_cgroups;
cgroup_set_logger;
cgroup_set_default_logger;
cgroup_set_loglevel;
cgroup_log;
cgroup_parse_log_level_str;
} CGROUP_0.38;

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/*
* Copyright Red Hat, Inc. 2012
*
* Author: Jan Safranek <jsafrane@redhat.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <libcgroup.h>
#include <libcgroup-internal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <strings.h>
static cgroup_logger_callback cgroup_logger;
static void *cgroup_logger_userdata;
static int cgroup_loglevel;
static void cgroup_default_logger(void *userdata, int level, const char *fmt,
va_list ap)
{
vfprintf(stdout, fmt, ap);
}
void cgroup_log(int level, const char *fmt, ...)
{
va_list ap;
if (!cgroup_logger)
return;
if (level > cgroup_loglevel)
return;
va_start(ap, fmt);
cgroup_logger(cgroup_logger_userdata, level, fmt, ap);
va_end(ap);
}
void cgroup_set_logger(cgroup_logger_callback logger, int loglevel,
void *userdata)
{
cgroup_logger = logger;
cgroup_set_loglevel(loglevel);
cgroup_logger_userdata = userdata;
}
void cgroup_set_default_logger(int level)
{
if (!cgroup_logger)
cgroup_set_logger(cgroup_default_logger, level, NULL);
}
int cgroup_parse_log_level_str(const char *levelstr)
{
char *end;
long level;
errno = 0;
/* try to parse integer first */
level = strtol(levelstr, &end, 10);
if (end != levelstr && *end == '\0')
return level;
if (strcasecmp(levelstr, "ERROR") == 0)
return CGROUP_LOG_ERROR;
if (strcasecmp(levelstr, "WARNING") == 0)
return CGROUP_LOG_WARNING;
if (strcasecmp(levelstr, "INFO") == 0)
return CGROUP_LOG_INFO;
if (strcasecmp(levelstr, "DEBUG") == 0)
return CGROUP_LOG_DEBUG;
return CGROUP_DEFAULT_LOGLEVEL;
}
void cgroup_set_loglevel(int loglevel)
{
if (loglevel != -1)
cgroup_loglevel = loglevel;
else {
char *level_str = getenv("CGROUP_LOGLEVEL");
if (level_str != NULL)
cgroup_loglevel = cgroup_parse_log_level_str(level_str);
else
cgroup_loglevel = CGROUP_DEFAULT_LOGLEVEL;
}
}

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libcgroup-0.41/src/pam/Makefile.am Normal file
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INCLUDES = -I $(top_srcdir)/include
if WITH_PAM
pamlib_LTLIBRARIES = pam_cgroup.la
pam_cgroup_la_SOURCES = pam_cgroup.c
pam_cgroup_la_LDFLAGS = -module
pam_cgroup_la_LIBADD = $(top_builddir)/src/.libs/libcgroup.la -lpam
endif

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test -z "$$locs" || { \
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distdir: $(DISTFILES)
@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
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sed -e "s|^$$srcdirstrip/||;t" \
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# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

163
libcgroup-0.41/src/pam/pam_cgroup.c Normal file
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@ -0,0 +1,163 @@
/*
* Copyright RedHat Inc. 2008
*
* Author: Vivek Goyal <vgoyal@redhat.com>
*
* Derived from pam_limits.c. Original Copyright notice follows.
*
* Copyright (c) Cristian Gafton, 1996-1997, <gafton@redhat.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, and the entire permission notice in its entirety,
* including the disclaimer of warranties.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* ALTERNATIVELY, this product may be distributed under the terms of
* the GNU Public License, in which case the provisions of the GPL are
* required INSTEAD OF the above restrictions. (This clause is
* necessary due to a potential bad interaction between the GPL and
* the restrictions contained in a BSD-style copyright.)
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* End of original copyright notice.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <errno.h>
#include <syslog.h>
#include <libcgroup.h>
#include <pwd.h>
/*
* Module defines
*/
#define PAM_SM_SESSION
#include <security/pam_modules.h>
#include <security/_pam_macros.h>
#include <security/pam_modutil.h>
#include <security/pam_ext.h>
/* argument parsing */
#define PAM_DEBUG_ARG 0x0001
static int _pam_parse(const pam_handle_t *pamh, int argc, const char **argv)
{
int ctrl = 0;
/* step through arguments */
for (ctrl = 0; argc-- > 0; ++argv) {
if (!strcmp(*argv, "debug"))
ctrl |= PAM_DEBUG_ARG;
else
pam_syslog(pamh, LOG_ERR, "unknown option: %s", *argv);
}
return ctrl;
}
/* now the session stuff */
PAM_EXTERN int pam_sm_open_session(pam_handle_t *pamh, int flags,
int argc, const char **argv)
{
pid_t pid;
int ctrl, ret;
char *user_name;
struct passwd *pwd;
D(("called."));
ctrl = _pam_parse(pamh, argc, argv);
ret = pam_get_item(pamh, PAM_USER, (void *) &user_name);
if (user_name == NULL || ret != PAM_SUCCESS) {
pam_syslog(pamh, LOG_ERR, "open_session - error recovering"
"username");
return PAM_SESSION_ERR;
}
pwd = pam_modutil_getpwnam(pamh, user_name);
if (!pwd) {
if (ctrl & PAM_DEBUG_ARG)
pam_syslog(pamh, LOG_ERR, "open_session username"
" '%s' does not exist", user_name);
return PAM_SESSION_ERR;
}
D(("user name is %s", user_name));
/* Initialize libcg */
ret = cgroup_init();
if (ret) {
if (ctrl & PAM_DEBUG_ARG)
pam_syslog(pamh, LOG_ERR, "libcgroup initialization"
" failed");
return PAM_SESSION_ERR;
}
D(("Initialized libcgroup successfuly."));
/* Determine the pid of the task */
pid = getpid();
/* Note: We are using default gid here. Is there a way to determine
* under what egid service will be provided?
*/
ret = cgroup_change_cgroup_uid_gid_flags(pwd->pw_uid,
pwd->pw_gid, pid, CGFLAG_USECACHE);
if (ret) {
if (ctrl & PAM_DEBUG_ARG)
pam_syslog(pamh, LOG_ERR, "Change of cgroup for process"
" with username %s failed.\n", user_name);
return PAM_SESSION_ERR;
}
if (ctrl & PAM_DEBUG_ARG)
pam_syslog(pamh, LOG_DEBUG, "Changed cgroup for process %d"
" with username %s.\n", pid, user_name);
return PAM_SUCCESS;
}
PAM_EXTERN int pam_sm_close_session(pam_handle_t *pamh, int flags, int argc,
const char **argv)
{
D(("called pam_cgroup close session"));
/* nothing to do yet */
return PAM_SUCCESS;
}

1036
libcgroup-0.41/src/parse.c Normal file
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23
libcgroup-0.41/src/parse.h Normal file
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@ -0,0 +1,23 @@
#define ID 257
#define MOUNT 258
#define GROUP 259
#define PERM 260
#define TASK 261
#define ADMIN 262
#define NAMESPACE 263
#define DEFAULT 264
#define TEMPLATE 265
#ifdef YYSTYPE
#undef YYSTYPE_IS_DECLARED
#define YYSTYPE_IS_DECLARED 1
#endif
#ifndef YYSTYPE_IS_DECLARED
#define YYSTYPE_IS_DECLARED 1
typedef union {
char *name;
char chr;
int val;
struct cgroup_dictionary *values;
} YYSTYPE;
#endif /* !YYSTYPE_IS_DECLARED */
extern YYSTYPE yylval;

502
libcgroup-0.41/src/parse.y Normal file
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@ -0,0 +1,502 @@
/*
* Copyright IBM Corporation. 2007
*
* Authors: Balbir Singh <balbir@linux.vnet.ibm.com>
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* NOTE: The grammar has been modified, not to be the most efficient, but
* to allow easy updation of internal data structures.
*/
%{
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <libcgroup.h>
#include <libcgroup-internal.h>
int yylex(void);
extern int line_no;
extern char *yytext;
static void yyerror(const char *s)
{
fprintf(stderr, "error at line number %d at %s:%s\n", line_no, yytext,
s);
}
int yywrap(void)
{
return 1;
}
%}
%token ID MOUNT GROUP PERM TASK ADMIN NAMESPACE DEFAULT TEMPLATE
%union {
char *name;
char chr;
int val;
struct cgroup_dictionary *values;
}
%type <name> ID
%type <val> mountvalue_conf mount task_namevalue_conf admin_namevalue_conf
%type <val> admin_conf task_conf task_or_admin group_conf group start
%type <val> namespace namespace_conf default default_conf
%type <values> namevalue_conf
%type <val> template template_conf
%type <val> template_task_or_admin template_task_namevalue_conf
%type <val> template_admin_namevalue_conf template_task_conf
%type <val> template_admin_conf
%start start
%%
start : start group
{
$$ = $1;
}
| start mount
{
$$ = $1;
}
| start default
{
$$ = $1;
}
| start namespace
{
$$ = $1;
}
| start template
{
$$ = $1;
}
|
{
$$ = 1;
}
;
default : DEFAULT '{' default_conf '}'
{
$$ = $3;
if ($$) {
cgroup_config_define_default();
}
}
;
default_conf
: PERM '{' task_or_admin '}'
{
$$ = $3;
}
;
group : GROUP ID '{' group_conf '}'
{
$$ = $4;
if ($$) {
$$ = cgroup_config_insert_cgroup($2);
if (!$$) {
fprintf(stderr, "failed to insert group"
" check size and memory");
$$ = ECGOTHER;
return $$;
}
} else {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
group_conf
: ID '{' namevalue_conf '}'
{
$$ = cgroup_config_parse_controller_options($1, $3);
cgroup_dictionary_free($3);
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
| group_conf ID '{' namevalue_conf '}'
{
$$ = cgroup_config_parse_controller_options($2, $4);
cgroup_dictionary_free($4);
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
| PERM '{' task_or_admin '}'
{
$$ = $3;
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
template : TEMPLATE ID '{' template_conf '}'
{
$$ = $4;
if ($$) {
$$ = template_config_insert_cgroup($2);
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGOTHER;
return $$;
}
} else {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
template_conf
: ID '{' namevalue_conf '}'
{
$$ = template_config_parse_controller_options($1, $3);
cgroup_dictionary_free($3);
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
| template_conf ID '{' namevalue_conf '}'
{
$$ = template_config_parse_controller_options($2, $4);
cgroup_dictionary_free($4);
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
| PERM '{' template_task_or_admin '}'
{
$$ = $3;
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
template_task_or_admin
: TASK '{' template_task_namevalue_conf '}' template_admin_conf
{
$$ = $3 && $5;
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
| ADMIN '{' template_admin_namevalue_conf '}' template_task_conf
{
$$ = $3 && $5;
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
namevalue_conf
: ID '=' ID ';'
{
struct cgroup_dictionary *dict;
int ret;
ret = cgroup_dictionary_create(&dict, 0);
if (ret == 0)
ret = cgroup_dictionary_add(dict, $1, $3);
if (ret) {
fprintf(stderr, "parsing failed at line number %d:%s\n",
line_no, cgroup_strerror(ret));
$$ = NULL;
cgroup_dictionary_free(dict);
return ECGCONFIGPARSEFAIL;
}
$$ = dict;
}
| namevalue_conf ID '=' ID ';'
{
int ret = 0;
ret = cgroup_dictionary_add($1, $2, $4);
if (ret != 0) {
fprintf(stderr, "parsing failed at line number %d: %s\n",
line_no, cgroup_strerror(ret));
$$ = NULL;
return ECGCONFIGPARSEFAIL;
}
$$ = $1;
}
|
{
$$ = NULL;
}
;
task_namevalue_conf
: ID '=' ID ';'
{
$$ = cgroup_config_group_task_perm($1, $3);
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
| task_namevalue_conf ID '=' ID ';'
{
$$ = $1 && cgroup_config_group_task_perm($2, $4);
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
admin_namevalue_conf
: ID '=' ID ';'
{
$$ = cgroup_config_group_admin_perm($1, $3);
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
| admin_namevalue_conf ID '=' ID ';'
{
$$ = $1 && cgroup_config_group_admin_perm($2, $4);
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
template_task_namevalue_conf
: ID '=' ID ';'
{
$$ = template_config_group_task_perm($1, $3);
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
| template_task_namevalue_conf ID '=' ID ';'
{
$$ = $1 && template_config_group_task_perm($2, $4);
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
template_admin_namevalue_conf
: ID '=' ID ';'
{
$$ = template_config_group_admin_perm($1, $3);
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
| template_admin_namevalue_conf ID '=' ID ';'
{
$$ = $1 && template_config_group_admin_perm($2, $4);
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
task_or_admin
: TASK '{' task_namevalue_conf '}' admin_conf
{
$$ = $3 && $5;
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
| ADMIN '{' admin_namevalue_conf '}' task_conf
{
$$ = $3 && $5;
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
admin_conf: ADMIN '{' admin_namevalue_conf '}'
{
$$ = $3;
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
task_conf: TASK '{' task_namevalue_conf '}'
{
$$ = $3;
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
template_admin_conf: ADMIN '{' template_admin_namevalue_conf '}'
{
$$ = $3;
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
template_task_conf: TASK '{' template_task_namevalue_conf '}'
{
$$ = $3;
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
mountvalue_conf
: ID '=' ID ';'
{
if (!cgroup_config_insert_into_mount_table($1, $3)) {
cgroup_config_cleanup_mount_table();
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
$$ = 1;
}
| mountvalue_conf ID '=' ID ';'
{
if (!cgroup_config_insert_into_mount_table($2, $4)) {
cgroup_config_cleanup_mount_table();
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
$$ = 1;
}
;
mount : MOUNT '{' mountvalue_conf '}'
{
$$ = $3;
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
namespace_conf
: ID '=' ID ';'
{
if (!cgroup_config_insert_into_namespace_table($1, $3)) {
cgroup_config_cleanup_namespace_table();
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
$$ = 1;
}
| namespace_conf ID '=' ID ';'
{
if (!cgroup_config_insert_into_namespace_table($2, $4)) {
cgroup_config_cleanup_namespace_table();
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
$$ = 1;
}
;
namespace : NAMESPACE '{' namespace_conf '}'
{
$$ = $3;
if (!$$) {
fprintf(stderr, "parsing failed at line number %d\n",
line_no);
$$ = ECGCONFIGPARSEFAIL;
return $$;
}
}
;
%%

36
libcgroup-0.41/src/tools/Makefile.am Normal file
View File

@ -0,0 +1,36 @@
INCLUDES = -I$(top_srcdir)/src -I$(top_srcdir)/include
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if WITH_TOOLS
bin_PROGRAMS = cgexec cgclassify cgcreate cgset cgget cgdelete lssubsys\
lscgroup cgsnapshot
sbin_PROGRAMS = cgconfigparser cgclear
cgexec_SOURCES = cgexec.c tools-common.c tools-common.h
cgclassify_SOURCES = cgclassify.c tools-common.c tools-common.h
cgcreate_SOURCES = cgcreate.c tools-common.c tools-common.h
cgset_SOURCES = cgset.c tools-common.c tools-common.h
cgget_SOURCES = cgget.c tools-common.c tools-common.h
cgconfigparser_SOURCES = cgconfig.c tools-common.c tools-common.h
cgclear_SOURCES = cgclear.c tools-common.c tools-common.h
cgdelete_SOURCES = cgdelete.c tools-common.c tools-common.h
lssubsys_SOURCES = lssubsys.c
lscgroup_SOURCES = tools-common.c lscgroup.c
cgsnapshot_SOURCES = cgsnapshot.c
install-exec-hook:
chmod u+s $(DESTDIR)$(bindir)/cgexec
endif

822
libcgroup-0.41/src/tools/Makefile.in Normal file
View File

@ -0,0 +1,822 @@
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203
libcgroup-0.41/src/tools/cgclassify.c Normal file
View File

@ -0,0 +1,203 @@
/*
* Copyright RedHat Inc. 2008
*
* Authors: Vivek Goyal <vgoyal@redhat.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <libcgroup.h>
#include <libcgroup-internal.h>
#include <limits.h>
#include <pwd.h>
#include <unistd.h>
#include <getopt.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "tools-common.h"
#define TEMP_BUF 81
static void usage(int status, const char *program_name)
{
if (status != 0) {
fprintf(stderr, "Wrong input parameters,"
" try %s -h' for more information.\n",
program_name);
return;
}
printf("Usage: %s [[-g] <controllers>:<path>] "\
"[--sticky | --cancel-sticky] <list of pids>\n", program_name);
printf("Move running task(s) to given cgroups\n");
printf(" -h, --help Display this help\n");
printf(" -g <controllers>:<path> Control group to be used "\
"as target\n");
printf(" --cancel-sticky cgred daemon change pidlist "\
"and children tasks\n");
printf(" --sticky cgred daemon does not change "\
"pidlist and children tasks\n");
}
/*
* Change process group as specified on command line.
*/
static int change_group_path(pid_t pid, struct cgroup_group_spec *cgroup_list[])
{
int i;
int ret = 0;
for (i = 0; i < CG_HIER_MAX; i++) {
if (!cgroup_list[i])
break;
ret = cgroup_change_cgroup_path(cgroup_list[i]->path, pid,
(const char*const*) cgroup_list[i]->controllers);
if (ret) {
fprintf(stderr, "Error changing group of pid %d: %s\n",
pid, cgroup_strerror(ret));
return -1;
}
}
return 0;
}
/*
* Change process group as specified in cgrules.conf.
*/
static int change_group_based_on_rule(pid_t pid)
{
uid_t euid;
gid_t egid;
char *procname = NULL;
int ret = -1;
/* Put pid into right cgroup as per rules in /etc/cgrules.conf */
if (cgroup_get_uid_gid_from_procfs(pid, &euid, &egid)) {
fprintf(stderr, "Error in determining euid/egid of"
" pid %d\n", pid);
goto out;
}
ret = cgroup_get_procname_from_procfs(pid, &procname);
if (ret) {
fprintf(stderr, "Error in determining process name of"
" pid %d\n", pid);
goto out;
}
/* Change the cgroup by determining the rules */
ret = cgroup_change_cgroup_flags(euid, egid, procname, pid, 0);
if (ret) {
fprintf(stderr, "Error: change of cgroup failed for"
" pid %d: %s\n", pid, cgroup_strerror(ret));
goto out;
}
ret = 0;
out:
if (procname)
free(procname);
return ret;
}
static struct option longopts[] = {
{"sticky", no_argument, NULL, 's'},
{"cancel-sticky", no_argument, NULL, 'u'},
{"help", no_argument, NULL, 'h'},
{0, 0, 0, 0}
};
int main(int argc, char *argv[])
{
int ret = 0, i, exit_code = 0;
pid_t pid;
int cg_specified = 0;
int flag = 0;
struct cgroup_group_spec *cgroup_list[CG_HIER_MAX];
int c;
char *endptr;
if (argc < 2) {
usage(1, argv[0]);
exit(2);
}
memset(cgroup_list, 0, sizeof(cgroup_list));
while ((c = getopt_long(argc, argv, "+g:sh", longopts, NULL)) > 0) {
switch (c) {
case 'h':
usage(0, argv[0]);
exit(0);
break;
case 'g':
ret = parse_cgroup_spec(cgroup_list, optarg,
CG_HIER_MAX);
if (ret) {
fprintf(stderr, "cgroup controller and path"
"parsing failed\n");
return -1;
}
cg_specified = 1;
break;
case 's':
flag |= CGROUP_DAEMON_UNCHANGE_CHILDREN;
break;
case 'u':
flag |= CGROUP_DAEMON_CANCEL_UNCHANGE_PROCESS;
break;
default:
usage(1, argv[0]);
exit(2);
break;
}
}
/* Initialize libcg */
ret = cgroup_init();
if (ret) {
fprintf(stderr, "%s: libcgroup initialization failed: %s\n",
argv[0], cgroup_strerror(ret));
return ret;
}
for (i = optind; i < argc; i++) {
pid = (pid_t) strtol(argv[i], &endptr, 10);
if (endptr[0] != '\0') {
/* the input argument was not a number */
fprintf(stderr, "Error: %s is not valid pid.\n",
argv[i]);
exit_code = 2;
continue;
}
if (flag)
ret = cgroup_register_unchanged_process(pid, flag);
if (ret)
exit_code = 1;
if (cg_specified)
ret = change_group_path(pid, cgroup_list);
else
ret = change_group_based_on_rule(pid);
/* if any group change fails */
if (ret)
exit_code = 1;
}
return exit_code;
}

142
libcgroup-0.41/src/tools/cgclear.c Normal file
View File

@ -0,0 +1,142 @@
/*
* Copyright IBM Corporation. 2009
*
* Authors: Dhaval Giani <dhaval@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Code initiated and designed by Dhaval Giani. All faults are most likely
* his mistake.
*/
#include <libcgroup.h>
#include <libcgroup-internal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <getopt.h>
#include "tools-common.h"
static struct cgroup_string_list cfg_files;
static void usage(int status, const char *program_name)
{
if (status != 0) {
fprintf(stderr, "Wrong input parameters,"
" try %s -h' for more information.\n",
program_name);
return;
}
printf("Usage: %s [-h] [-l FILE] [-L DIR] [-e]\n",
program_name);
printf("Unload the cgroup filesystem\n");
printf(" -e, --empty Remove only empty cgroups\n");
printf(" -h, --help Display this help\n");
printf(" -l, --load=FILE Parse and load the cgroups "\
"configuration file\n");
printf(" -L, --load-directory=DIR Parse and load the cgroups "\
"configuration files from a directory\n");
}
static void report_error(int error, const char *program_name)
{
/* Don't spit an error when there is nothing to clear. */
if (error == ECGROUPNOTMOUNTED)
error = 0;
if (error) {
printf("%s failed with %s\n", program_name,
cgroup_strerror(error));
}
}
int main(int argc, char *argv[])
{
int error = 0, ret;
int c;
int unload_all = 1;
int flags = CGFLAG_DELETE_RECURSIVE;
struct option longopts[] = {
{"load", required_argument, 0, 'l' },
{"load-directory", required_argument, 0, 'L' },
{"only-empty", no_argument, 0, 'e' },
{"help", no_argument, 0, 'h'},
{ 0, 0, 0, 0}
};
ret = cgroup_string_list_init(&cfg_files, argc/2);
if (ret) {
fprintf(stderr, "%s: cannot initialize list of files,"
" out of memory?\n",
argv[0]);
exit(1);
}
while ((c = getopt_long(argc, argv, "hl:L:e", longopts, NULL)) > 0) {
switch (c) {
case 'e':
flags = CGFLAG_DELETE_EMPTY_ONLY;
break;
case 'l':
unload_all = 0;
ret = cgroup_string_list_add_item(&cfg_files, optarg);
if (ret) {
fprintf(stderr, "%s: cannot add file to list,"\
" out of memory?\n", argv[0]);
exit(1);
}
break;
case 'L':
unload_all = 0;
cgroup_string_list_add_directory(&cfg_files, optarg,
argv[0]);
break;
case 'h':
usage(0, argv[0]);
exit(0);
default:
usage(1, argv[0]);
exit(1);
}
}
if (unload_all) {
error = cgroup_unload_cgroups();
if (error)
report_error(error, argv[0]);
} else {
int i;
ret = cgroup_init();
if (ret) {
report_error(ret, argv[0]);
exit(4);
}
/* process the config files in reverse order */
for (i = cfg_files.count-1; i >= 0 ; i--) {
ret = cgroup_config_unload_config(cfg_files.items[i],
flags);
if (ret && ret != ECGNONEMPTY) {
report_error(ret, argv[0]);
if (!error)
error = ret;
}
}
}
cgroup_string_list_free(&cfg_files);
if (error)
exit(3);
return 0;
}

206
libcgroup-0.41/src/tools/cgconfig.c Normal file
View File

@ -0,0 +1,206 @@
/*
* Copyright IBM Corporation. 2007
*
* Authors: Dhaval Giani <dhaval@linux.vnet.ibm.com>
* Balbir Singh <balbir@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Code initiated and designed by Dhaval Giani. All faults are most likely
* his mistake.
*/
#include <libcgroup.h>
#include <libcgroup-internal.h>
/* For basename() */
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <string.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <getopt.h>
#include "tools-common.h"
static struct cgroup_string_list cfg_files;
static void usage(int status, char *progname)
{
if (status != 0) {
fprintf(stderr, "Wrong input parameters, "\
"try %s -h' for more information.\n", progname);
return;
}
printf("Usage: %s [-h] [-f mode] [-d mode] [-s mode] "\
"[-t <tuid>:<tgid>] [-a <agid>:<auid>] [-l FILE] "\
"[-L DIR] ...\n", progname);
printf("Parse and load the specified cgroups configuration file\n");
printf(" -a <tuid>:<tgid> Default owner of groups files "\
"and directories\n");
printf(" -d, --dperm=mode Default group directory "\
"permissions\n");
printf(" -f, --fperm=mode Default group file "\
"permissions\n");
printf(" -h, --help Display this help\n");
printf(" -l, --load=FILE Parse and load the cgroups "\
"configuration file\n");
printf(" -L, --load-directory=DIR Parse and load the cgroups "\
"configuration files from a directory\n");
printf(" -s, --tperm=mode Default tasks file "\
"permissions\n");
printf(" -t <tuid>:<tgid> Default owner of the tasks "\
"file\n");
}
int main(int argc, char *argv[])
{
int c, i;
int ret, error = 0;
static struct option options[] = {
{"help", 0, 0, 'h'},
{"load", 1, 0, 'l'},
{"load-directory", 1, 0, 'L'},
{"task", required_argument, NULL, 't'},
{"admin", required_argument, NULL, 'a'},
{"dperm", required_argument, NULL, 'd'},
{"fperm", required_argument, NULL, 'f' },
{"tperm", required_argument, NULL, 's' },
{0, 0, 0, 0}
};
uid_t tuid = NO_UID_GID, auid = NO_UID_GID;
gid_t tgid = NO_UID_GID, agid = NO_UID_GID;
mode_t dir_mode = NO_PERMS;
mode_t file_mode = NO_PERMS;
mode_t tasks_mode = NO_PERMS;
int dirm_change = 0;
int filem_change = 0;
struct cgroup *default_group = NULL;
cgroup_set_default_logger(-1);
if (argc < 2) {
usage(1, argv[0]);
return -1;
}
error = cgroup_string_list_init(&cfg_files, argc/2);
if (error)
goto err;
while ((c = getopt_long(argc, argv, "hl:L:t:a:d:f:s:", options,
NULL)) > 0) {
switch (c) {
case 'h':
usage(0, argv[0]);
error = 0;
goto err;
case 'l':
error = cgroup_string_list_add_item(&cfg_files, optarg);
if (error) {
fprintf(stderr, "%s: cannot add file to list,"\
" out of memory?\n", argv[0]);
goto err;
}
break;
case 'L':
cgroup_string_list_add_directory(&cfg_files, optarg,
argv[0]);
break;
case 'a':
/* set admin uid/gid */
error = parse_uid_gid(optarg, &auid, &agid, argv[0]);
if (error)
goto err;
break;
case 't':
/* set task uid/gid */
error = parse_uid_gid(optarg, &tuid, &tgid, argv[0]);
if (error)
goto err;
break;
case 'd':
dirm_change = 1;
error = parse_mode(optarg, &dir_mode, argv[0]);
if (error)
goto err;
break;
case 'f':
filem_change = 1;
error = parse_mode(optarg, &file_mode, argv[0]);
if (error)
goto err;
break;
case 's':
filem_change = 1;
error = parse_mode(optarg, &tasks_mode, argv[0]);
if (error)
goto err;
break;
default:
usage(1, argv[0]);
error = -1;
goto err;
}
}
if (argv[optind]) {
usage(1, argv[0]);
error = -1;
goto err;
}
/* set default permissions */
default_group = cgroup_new_cgroup("default");
if (!default_group) {
error = -1;
fprintf(stderr, "%s: cannot create default cgroup\n", argv[0]);
goto err;
}
error = cgroup_set_uid_gid(default_group, tuid, tgid, auid, agid);
if (error) {
fprintf(stderr, "%s: cannot set default UID and GID: %s\n",
argv[0], cgroup_strerror(error));
goto free_cgroup;
}
if (dirm_change | filem_change) {
cgroup_set_permissions(default_group, dir_mode, file_mode,
tasks_mode);
}
error = cgroup_config_set_default(default_group);
if (error) {
fprintf(stderr, "%s: cannot set config parser defaults: %s\n",
argv[0], cgroup_strerror(error));
goto free_cgroup;
}
for (i = 0; i < cfg_files.count; i++) {
ret = cgroup_config_load_config(cfg_files.items[i]);
if (ret) {
fprintf(stderr, "%s; error loading %s: %s\n", argv[0],
cfg_files.items[i],
cgroup_strerror(ret));
if (!error)
error = ret;
}
}
free_cgroup:
cgroup_free(&default_group);
err:
cgroup_string_list_free(&cfg_files);
return error;
}

235
libcgroup-0.41/src/tools/cgcreate.c Normal file
View File

@ -0,0 +1,235 @@
/*
* Copyright Red Hat, Inc. 2009
*
* Authors: Ivana Hutarova Varekova <varekova@redhat.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#include <libcgroup.h>
#include <libcgroup-internal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pwd.h>
#include <sys/types.h>
#include <errno.h>
#include <unistd.h>
#include <grp.h>
#include <getopt.h>
#include "tools-common.h"
/*
* Display the usage
*/
static void usage(int status, const char *program_name)
{
if (status != 0) {
fprintf(stderr, "Wrong input parameters,"
" try %s -h' for more information.\n",
program_name);
return;
}
printf("Usage: %s [-h] [-f mode] [-d mode] [-s mode] "\
"[-t <tuid>:<tgid>] [-a <agid>:<auid>] "\
"-g <controllers>:<path> [-g ...]\n", program_name);
printf("Create control group(s)\n");
printf(" -a <tuid>:<tgid> Owner of the group and all "\
"its files\n");
printf(" -d, --dperm=mode Group directory permissions\n");
printf(" -f, --fperm=mode Group file permissions\n");
printf(" -g <controllers>:<path> Control group which should be "\
"added\n");
printf(" -h, --help Display this help\n");
printf(" -s, --tperm=mode Tasks file permissions\n");
printf(" -t <tuid>:<tgid> Owner of the tasks file\n");
}
int main(int argc, char *argv[])
{
int ret = 0;
int i, j;
int c;
static struct option long_opts[] = {
{"help", no_argument, NULL, 'h'},
{"task", required_argument, NULL, 't'},
{"admin", required_argument, NULL, 'a'},
{"", required_argument, NULL, 'g'},
{"dperm", required_argument, NULL, 'd'},
{"fperm", required_argument, NULL, 'f' },
{"tperm", required_argument, NULL, 's' },
{0, 0, 0, 0},
};
uid_t tuid = CGRULE_INVALID, auid = CGRULE_INVALID;
gid_t tgid = CGRULE_INVALID, agid = CGRULE_INVALID;
struct cgroup_group_spec **cgroup_list;
struct cgroup *cgroup;
struct cgroup_controller *cgc;
/* approximation of max. numbers of groups that will be created */
int capacity = argc;
/* permission variables */
mode_t dir_mode = NO_PERMS;
mode_t file_mode = NO_PERMS;
mode_t tasks_mode = NO_PERMS;
int dirm_change = 0;
int filem_change = 0;
/* no parametr on input */
if (argc < 2) {
usage(1, argv[0]);
return -1;
}
cgroup_list = calloc(capacity, sizeof(struct cgroup_group_spec *));
if (cgroup_list == NULL) {
fprintf(stderr, "%s: out of memory\n", argv[0]);
ret = -1;
goto err;
}
/* parse arguments */
while ((c = getopt_long(argc, argv, "a:t:g:hd:f:s:", long_opts, NULL))
> 0) {
switch (c) {
case 'h':
usage(0, argv[0]);
ret = 0;
goto err;
case 'a':
/* set admin uid/gid */
if (parse_uid_gid(optarg, &auid, &agid, argv[0]))
goto err;
break;
case 't':
/* set task uid/gid */
if (parse_uid_gid(optarg, &tuid, &tgid, argv[0]))
goto err;
break;
case 'g':
ret = parse_cgroup_spec(cgroup_list, optarg, capacity);
if (ret) {
fprintf(stderr, "%s: "
"cgroup controller and path"
"parsing failed (%s)\n",
argv[0], argv[optind]);
ret = -1;
goto err;
}
break;
case 'd':
dirm_change = 1;
ret = parse_mode(optarg, &dir_mode, argv[0]);
if (ret)
goto err;
break;
case 'f':
filem_change = 1;
ret = parse_mode(optarg, &file_mode, argv[0]);
if (ret)
goto err;
break;
case 's':
filem_change = 1;
ret = parse_mode(optarg, &tasks_mode, argv[0]);
if (ret)
goto err;
break;
default:
usage(1, argv[0]);
ret = -1;
goto err;
}
}
/* no cgroup name */
if (argv[optind]) {
fprintf(stderr, "%s: "
"wrong arguments (%s)\n",
argv[0], argv[optind]);
ret = -1;
goto err;
}
/* initialize libcg */
ret = cgroup_init();
if (ret) {
fprintf(stderr, "%s: "
"libcgroup initialization failed: %s\n",
argv[0], cgroup_strerror(ret));
goto err;
}
/* for each new cgroup */
for (i = 0; i < capacity; i++) {
if (!cgroup_list[i])
break;
/* create the new cgroup structure */
cgroup = cgroup_new_cgroup(cgroup_list[i]->path);
if (!cgroup) {
ret = ECGFAIL;
fprintf(stderr, "%s: can't add new cgroup: %s\n",
argv[0], cgroup_strerror(ret));
goto err;
}
/* set uid and gid for the new cgroup based on input options */
ret = cgroup_set_uid_gid(cgroup, tuid, tgid, auid, agid);
if (ret)
goto err;
/* add controllers to the new cgroup */
j = 0;
while (cgroup_list[i]->controllers[j]) {
cgc = cgroup_add_controller(cgroup,
cgroup_list[i]->controllers[j]);
if (!cgc) {
ret = ECGINVAL;
fprintf(stderr, "%s: "
"controller %s can't be add\n",
argv[0],
cgroup_list[i]->controllers[j]);
cgroup_free(&cgroup);
goto err;
}
j++;
}
/* all variables set so create cgroup */
if (dirm_change | filem_change)
cgroup_set_permissions(cgroup, dir_mode, file_mode,
tasks_mode);
ret = cgroup_create_cgroup(cgroup, 0);
if (ret) {
fprintf(stderr, "%s: "
"can't create cgroup %s: %s\n",
argv[0], cgroup->name, cgroup_strerror(ret));
cgroup_free(&cgroup);
goto err;
}
cgroup_free(&cgroup);
}
err:
if (cgroup_list) {
for (i = 0; i < capacity; i++) {
if (cgroup_list[i])
cgroup_free_group_spec(cgroup_list[i]);
}
free(cgroup_list);
}
return ret;
}

178
libcgroup-0.41/src/tools/cgdelete.c Normal file
View File

@ -0,0 +1,178 @@
/*
* Copyright RedHat Inc. 2009
*
* Authors: Jan Safranek <jsafrane@redhat.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
*/
#include <libcgroup.h>
#include <libcgroup-internal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <getopt.h>
#include "tools-common.h"
static struct option const long_options[] =
{
{"recursive", no_argument, NULL, 'r'},
{"help", no_argument, NULL, 'h'},
{"group", required_argument, NULL, 'g'},
{NULL, 0, NULL, 0}
};
static void usage(int status, const char *program_name)
{
if (status != 0) {
fprintf(stderr, "Wrong input parameters,"
" try %s --help' for more information.\n",
program_name);
return;
}
printf("Usage: %s [-h] [-r] [[-g] <controllers>:<path>] ...\n",
program_name);
printf("Remove control group(s)\n");
printf(" -g <controllers>:<path> Control group to be removed "\
"(-g is optional)\n");
printf(" -h, --help Display this help\n");
printf(" -r, --recursive Recursively remove "\
"all subgroups\n");
}
int main(int argc, char *argv[])
{
int ret = 0;
int i, j;
int c;
int flags = 0;
int final_ret = 0;
struct cgroup_group_spec **cgroup_list = NULL;
struct cgroup *cgroup;
struct cgroup_controller *cgc;
/* initialize libcg */
ret = cgroup_init();
if (ret) {
fprintf(stderr, "%s: "
"libcgroup initialization failed: %s\n",
argv[0], cgroup_strerror(ret));
goto err;
}
cgroup_list = calloc(argc, sizeof(struct cgroup_group_spec *));
if (cgroup_list == NULL) {
fprintf(stderr, "%s: out of memory\n", argv[0]);
ret = -1;
goto err;
}
/*
* Parse arguments
*/
while ((c = getopt_long(argc, argv, "rhg:",
long_options, NULL)) > 0) {
switch (c) {
case 'r':
flags |= CGFLAG_DELETE_RECURSIVE;
break;
case 'g':
ret = parse_cgroup_spec(cgroup_list, optarg, argc);
if (ret != 0) {
fprintf(stderr,
"%s: error parsing cgroup '%s'\n",
argv[0], optarg);
ret = -1;
goto err;
}
break;
case 'h':
usage(0, argv[0]);
ret = 0;
goto err;
default:
usage(1, argv[0]);
ret = -1;
goto err;
}
}
/* parse groups on command line */
for (i = optind; i < argc; i++) {
ret = parse_cgroup_spec(cgroup_list, argv[i], argc);
if (ret != 0) {
fprintf(stderr, "%s: error parsing cgroup '%s'\n",
argv[0], argv[i]);
ret = -1;
goto err;
}
}
/* for each cgroup to be deleted */
for (i = 0; i < argc; i++) {
if (!cgroup_list[i])
break;
/* create the new cgroup structure */
cgroup = cgroup_new_cgroup(cgroup_list[i]->path);
if (!cgroup) {
ret = ECGFAIL;
fprintf(stderr, "%s: can't create new cgroup: %s\n",
argv[0], cgroup_strerror(ret));
goto err;
}
/* add controllers to the cgroup */
j = 0;
while (cgroup_list[i]->controllers[j]) {
cgc = cgroup_add_controller(cgroup,
cgroup_list[i]->controllers[j]);
if (!cgc) {
ret = ECGFAIL;
fprintf(stderr, "%s: "
"controller %s can't be added\n",
argv[0],
cgroup_list[i]->controllers[j]);
cgroup_free(&cgroup);
goto err;
}
j++;
}
ret = cgroup_delete_cgroup_ext(cgroup, flags);
/*
* Remember the errors and continue, try to remove all groups.
*/
if (ret != 0) {
fprintf(stderr, "%s: cannot remove group '%s': %s\n",
argv[0], cgroup->name,
cgroup_strerror(ret));
final_ret = ret;
}
cgroup_free(&cgroup);
}
ret = final_ret;
err:
if (cgroup_list) {
for (i = 0; i < argc; i++) {
if (cgroup_list[i])
cgroup_free_group_spec(cgroup_list[i]);
}
free(cgroup_list);
}
return ret;
}

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