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new upstream release

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- properly lock the lock files to be able to safely remove
  stale ones
This commit is contained in:
Tomas Mraz 2016-07-01 10:43:48 +02:00
parent 4516f77e69
commit aa74292e24
6 changed files with 155 additions and 39 deletions
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1
.gitignore vendored
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@ -6,3 +6,4 @@ at_3.1.12.orig.tar.gz
/at_3.1.14.orig.tar.gz
/at_3.1.16.orig.tar.gz
/at_3.1.18.orig.tar.gz
/at_3.1.20.orig.tar.gz

108
at-3.1.20-lock-locks.patch Normal file
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@ -0,0 +1,108 @@
diff -up at-3.1.20/atd.c.lock-locks at-3.1.20/atd.c
--- at-3.1.20/atd.c.lock-locks 2016-07-01 10:41:50.640867692 +0200
+++ at-3.1.20/atd.c 2016-07-01 10:42:32.345844967 +0200
@@ -74,6 +74,9 @@
#include <syslog.h>
#endif
+#include <sys/file.h>
+#include <utime.h>
+
/* Local headers */
#include "privs.h"
@@ -288,7 +291,7 @@ run_file(const char *filename, uid_t uid
* mail to the user.
*/
pid_t pid;
- int fd_out, fd_in;
+ int fd_out, fd_in, fd_std;
char jobbuf[9];
char *mailname = NULL;
int mailsize = 128;
@@ -410,6 +413,10 @@ run_file(const char *filename, uid_t uid
fcntl(fd_in, F_SETFD, fflags & ~FD_CLOEXEC);
+ if (flock(fd_in, LOCK_EX | LOCK_NB) != 0)
+ perr("Somebody already locked the job %8lu (%.500s) - "
+ "aborting", jobno, filename);
+
/*
* If the spool directory is mounted via NFS `atd' isn't able to
* read from the job file and will bump out here. The file is
@@ -553,10 +560,7 @@ run_file(const char *filename, uid_t uid
PRIV_END
}
/* We're the parent. Let's wait.
- */
- close(fd_in);
-
- /* We inherited the master's SIGCHLD handler, which does a
+ We inherited the master's SIGCHLD handler, which does a
non-blocking waitpid. So this blocking one will eventually
return with an ECHILD error.
*/
@@ -573,14 +577,14 @@ run_file(const char *filename, uid_t uid
/* some sendmail implementations are confused if stdout, stderr are
* not available, so let them point to /dev/null
*/
- if ((fd_in = open("/dev/null", O_WRONLY)) < 0)
+ if ((fd_std = open("/dev/null", O_WRONLY)) < 0)
perr("Could not open /dev/null.");
- if (dup2(fd_in, STDOUT_FILENO) < 0)
+ if (dup2(fd_std, STDOUT_FILENO) < 0)
perr("Could not use /dev/null as standard output.");
- if (dup2(fd_in, STDERR_FILENO) < 0)
+ if (dup2(fd_std, STDERR_FILENO) < 0)
perr("Could not use /dev/null as standard error.");
- if (fd_in != STDOUT_FILENO && fd_in != STDERR_FILENO)
- close(fd_in);
+ if (fd_std != STDOUT_FILENO && fd_std != STDERR_FILENO)
+ close(fd_std);
if (unlink(filename) == -1)
syslog(LOG_WARNING, "Warning: removing output file for job %li failed: %s",
@@ -588,7 +592,12 @@ run_file(const char *filename, uid_t uid
/* The job is now finished. We can delete its input file.
*/
- chdir(ATJOB_DIR);
+ if (chdir(ATJOB_DIR) != 0)
+ perr("Somebody removed %s directory from under us.", ATJOB_DIR);
+
+ /* This also removes the flock */
+ (void)close(fd_in);
+
unlink(newname);
free(newname);
@@ -723,16 +732,18 @@ run_loop()
/* Skip lock files */
if (queue == '=') {
- /* FIXME: calhariz */
- /* I think the following code is broken, but commenting
- may haven unknow side effects. Make a release and see
- in the wild how it works. For more information see:
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=818508/*
-
- /* if ((buf.st_nlink == 1) && (run_time + CHECK_INTERVAL <= now)) { */
- /* /\* Remove stale lockfile FIXME: lock the lockfile, if you fail, it's still in use. *\/ */
- /* unlink(dirent->d_name); */
- /* } */
+ if ((buf.st_nlink == 1) && (run_time + CHECK_INTERVAL <= now)) {
+ int fd;
+
+ fd = open(dirent->d_name, O_RDONLY);
+ if (fd != -1) {
+ if (flock(fd, LOCK_EX | LOCK_NB) == 0) {
+ unlink(dirent->d_name);
+ syslog(LOG_NOTICE, "removing stale lock file %s\n", dirent->d_name);
+ }
+ (void)close(fd);
+ }
+ }
continue;
}
/* Skip any other file types which may have been invented in

54
at-3.1.18-pam.patch → at-3.1.20-pam.patch
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@ -1,6 +1,6 @@
diff -up at-3.1.18/at.c.pam at-3.1.18/at.c
--- at-3.1.18/at.c.pam 2015-12-06 16:45:10.000000000 +0100
+++ at-3.1.18/at.c 2016-03-23 12:40:10.694447117 +0100
diff -up at-3.1.20/at.c.pam at-3.1.20/at.c
--- at-3.1.20/at.c.pam 2016-06-28 22:18:00.000000000 +0200
+++ at-3.1.20/at.c 2016-07-01 09:44:22.251683924 +0200
@@ -144,18 +144,13 @@ sigc(int signo)
/* If the user presses ^C, remove the spool file and exit
*/
@ -52,7 +52,7 @@ diff -up at-3.1.18/at.c.pam at-3.1.18/at.c
/* We've successfully created the file; let's set the flag so it
* gets removed in case of an interrupt or error.
*/
@@ -670,7 +658,7 @@ process_jobs(int argc, char **argv, int
@@ -673,7 +661,7 @@ process_jobs(int argc, char **argv, int
We need the unprivileged uid here since the file is owned by the real
(not effective) uid.
*/
@ -61,7 +61,7 @@ diff -up at-3.1.18/at.c.pam at-3.1.18/at.c
if (queue == '=') {
fprintf(stderr, "Warning: deleting running job\n");
@@ -679,8 +667,8 @@ process_jobs(int argc, char **argv, int
@@ -682,8 +670,8 @@ process_jobs(int argc, char **argv, int
perr("Cannot unlink %.500s", dirent->d_name);
rc = EXIT_FAILURE;
}
@ -71,7 +71,7 @@ diff -up at-3.1.18/at.c.pam at-3.1.18/at.c
done = 1;
break;
@@ -690,7 +678,7 @@ process_jobs(int argc, char **argv, int
@@ -693,7 +681,7 @@ process_jobs(int argc, char **argv, int
FILE *fp;
int ch;
@ -80,7 +80,7 @@ diff -up at-3.1.18/at.c.pam at-3.1.18/at.c
fp = fopen(dirent->d_name, "r");
if (fp) {
@@ -703,7 +691,7 @@ process_jobs(int argc, char **argv, int
@@ -706,7 +694,7 @@ process_jobs(int argc, char **argv, int
perr("Cannot open %.500s", dirent->d_name);
rc = EXIT_FAILURE;
}
@ -89,9 +89,9 @@ diff -up at-3.1.18/at.c.pam at-3.1.18/at.c
}
break;
diff -up at-3.1.18/atd.c.pam at-3.1.18/atd.c
--- at-3.1.18/atd.c.pam 2015-12-06 16:45:10.000000000 +0100
+++ at-3.1.18/atd.c 2016-03-23 12:43:31.990906478 +0100
diff -up at-3.1.20/atd.c.pam at-3.1.20/atd.c
--- at-3.1.20/atd.c.pam 2016-06-28 22:14:39.000000000 +0200
+++ at-3.1.20/atd.c 2016-07-01 09:44:22.251683924 +0200
@@ -91,6 +91,10 @@ int selinux_enabled = 0;
/* Macros */
@ -248,9 +248,9 @@ diff -up at-3.1.18/atd.c.pam at-3.1.18/atd.c
exit(EXIT_SUCCESS);
}
diff -up at-3.1.18/config.h.in.pam at-3.1.18/config.h.in
--- at-3.1.18/config.h.in.pam 2015-12-06 16:45:10.000000000 +0100
+++ at-3.1.18/config.h.in 2016-03-23 12:40:10.695447139 +0100
diff -up at-3.1.20/config.h.in.pam at-3.1.20/config.h.in
--- at-3.1.20/config.h.in.pam 2015-12-18 21:29:24.000000000 +0100
+++ at-3.1.20/config.h.in 2016-07-01 09:44:22.251683924 +0200
@@ -68,8 +68,8 @@
/* Define to 1 if you have the <nlist.h> header file. */
#undef HAVE_NLIST_H
@ -262,9 +262,9 @@ diff -up at-3.1.18/config.h.in.pam at-3.1.18/config.h.in
/* Define to 1 if you have the `pstat_getdynamic' function. */
#undef HAVE_PSTAT_GETDYNAMIC
diff -up at-3.1.18/configure.ac.pam at-3.1.18/configure.ac
--- at-3.1.18/configure.ac.pam 2015-12-06 16:45:10.000000000 +0100
+++ at-3.1.18/configure.ac 2016-03-23 12:45:27.885473913 +0100
diff -up at-3.1.20/configure.ac.pam at-3.1.20/configure.ac
--- at-3.1.20/configure.ac.pam 2016-06-28 22:55:52.000000000 +0200
+++ at-3.1.20/configure.ac 2016-07-01 09:45:23.268092527 +0200
@@ -78,7 +78,7 @@ AC_FUNC_GETLOADAVG
AC_CHECK_FUNCS(getcwd mktime strftime setreuid setresuid sigaction waitpid)
AC_CHECK_HEADERS(security/pam_appl.h, [
@ -286,11 +286,11 @@ diff -up at-3.1.18/configure.ac.pam at-3.1.18/configure.ac
+AC_SUBST(PAMLIB)
+
AC_ARG_WITH(selinux,
[ --with-selinux Define to run with selinux],
AC_DEFINE(WITH_SELINUX, 1, [Define if you are building with_selinux]),
diff -up at-3.1.18/Makefile.in.pam at-3.1.18/Makefile.in
--- at-3.1.18/Makefile.in.pam 2016-03-23 12:55:30.000000000 +0100
+++ at-3.1.18/Makefile.in 2016-03-23 12:57:58.347145148 +0100
[ --with-selinux Define to run with selinux (default=check)],
[],
diff -up at-3.1.20/Makefile.in.pam at-3.1.20/Makefile.in
--- at-3.1.20/Makefile.in.pam 2016-07-01 09:44:22.250683901 +0200
+++ at-3.1.20/Makefile.in 2016-07-01 09:44:22.252683947 +0200
@@ -68,7 +68,7 @@ LIST = Filelist Filelist.asc
all: at atd atd.service atrun
@ -300,9 +300,9 @@ diff -up at-3.1.18/Makefile.in.pam at-3.1.18/Makefile.in
rm -f $(CLONES)
$(LN_S) -f at atq
$(LN_S) -f at atrm
diff -up at-3.1.18/perm.c.pam at-3.1.18/perm.c
--- at-3.1.18/perm.c.pam 2015-12-06 16:45:10.000000000 +0100
+++ at-3.1.18/perm.c 2016-03-23 12:40:10.695447139 +0100
diff -up at-3.1.20/perm.c.pam at-3.1.20/perm.c
--- at-3.1.20/perm.c.pam 2015-08-22 00:09:22.000000000 +0200
+++ at-3.1.20/perm.c 2016-07-01 09:44:22.252683947 +0200
@@ -51,6 +51,14 @@
#define PRIV_END while(0)
#endif
@ -367,9 +367,9 @@ diff -up at-3.1.18/perm.c.pam at-3.1.18/perm.c
allow = user_in_file(ETCDIR "/at.allow", pentry->pw_name);
if (allow==0 || allow==1)
return allow;
diff -up at-3.1.18/privs.h.pam at-3.1.18/privs.h
--- at-3.1.18/privs.h.pam 2015-12-06 16:45:10.000000000 +0100
+++ at-3.1.18/privs.h 2016-03-23 12:40:10.695447139 +0100
diff -up at-3.1.20/privs.h.pam at-3.1.20/privs.h
--- at-3.1.20/privs.h.pam 2015-08-22 00:09:22.000000000 +0200
+++ at-3.1.20/privs.h 2016-07-01 09:44:22.252683947 +0200
@@ -144,3 +144,63 @@ extern gid_t real_gid, effective_gid, da
#error "Cannot implement user ID swapping without setreuid or setresuid"
#endif

12
at-3.1.14-shell.patch → at-3.1.20-shell.patch
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@ -1,6 +1,6 @@
diff -up at-3.1.14/at.c.shell at-3.1.14/at.c
--- at-3.1.14/at.c.shell 2014-01-06 17:58:17.555564746 +0100
+++ at-3.1.14/at.c 2014-01-06 17:59:17.699720002 +0100
diff -up at-3.1.20/at.c.shell at-3.1.20/at.c
--- at-3.1.20/at.c.shell 2016-07-01 09:47:13.392684445 +0200
+++ at-3.1.20/at.c 2016-07-01 09:48:47.679931959 +0200
@@ -62,11 +62,8 @@
#include <stdlib.h>
#include <string.h>
@ -26,7 +26,7 @@ diff -up at-3.1.14/at.c.shell at-3.1.14/at.c
/* Install the signal handler for SIGINT; terminate after removing the
* spool file if necessary
@@ -449,6 +452,9 @@ writefile(time_t runtimer, char queue)
@@ -465,6 +468,9 @@ writefile(time_t runtimer, char queue)
fprintf(fp, " || {\n\t echo 'Execution directory "
"inaccessible' >&2\n\t exit 1\n}\n");
@ -36,7 +36,7 @@ diff -up at-3.1.14/at.c.shell at-3.1.14/at.c
istty = isatty(fileno(stdin));
if (istty) {
fprintf(stderr, "at> ");
@@ -464,7 +470,7 @@ writefile(time_t runtimer, char queue)
@@ -480,7 +486,7 @@ writefile(time_t runtimer, char queue)
if (istty) {
fprintf(stderr, "<EOT>\n");
}
@ -44,4 +44,4 @@ diff -up at-3.1.14/at.c.shell at-3.1.14/at.c
+ fprintf(fp, "marcinDELIMITER%08lx\n", i);
if (ferror(fp))
panic("Output error");
fflush(fp);

17
at.spec
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@ -2,8 +2,8 @@
Summary: Job spooling tools
Name: at
Version: 3.1.18
Release: 2%{?dist}
Version: 3.1.20
Release: 1%{?dist}
# http://packages.debian.org/changelogs/pool/main/a/at/current/copyright
# + install-sh is MIT license with changes under Public Domain
License: GPLv3+ and GPLv2+ and ISC and MIT and Public Domain
@ -18,9 +18,9 @@ Source5: atd.systemd
Patch0: at-aarch64.patch
Patch1: at-3.1.18-make.patch
Patch2: at-3.1.18-pam.patch
Patch2: at-3.1.20-pam.patch
Patch4: at-3.1.14-opt_V.patch
Patch5: at-3.1.14-shell.patch
Patch5: at-3.1.20-shell.patch
Patch6: at-3.1.18-nitpicks.patch
Patch8: at-3.1.14-fix_no_export.patch
Patch9: at-3.1.14-mailwithhostname.patch
@ -30,6 +30,7 @@ Patch13: at-3.1.18-noabort.patch
Patch14: at-3.1.16-fclose-error.patch
Patch15: at-3.1.16-clear-nonjobs.patch
Patch16: at-3.1.18-utc-dst.patch
Patch17: at-3.1.20-lock-locks.patch
BuildRequires: fileutils /etc/init.d
BuildRequires: flex flex-static bison autoconf
@ -63,7 +64,7 @@ need to be repeated at the same time every day/week, etc. you should
use crontab instead.
%prep
%setup -c -q
%setup -q
cp %{SOURCE1} .
%patch0 -p1 -b .arm
%patch1 -p1 -b .make
@ -79,6 +80,7 @@ cp %{SOURCE1} .
%patch14 -p1 -b .fclose
%patch15 -p1 -b .clear-nojobs
%patch16 -p1 -b .dst
%patch17 -p1 -b .lock-locks
%build
# patch9 touches configure.in
@ -176,6 +178,11 @@ chown daemon:daemon %{_localstatedir}/spool/at/.SEQ
%attr(0644,root,root) /%{_unitdir}/atd.service
%changelog
* Fri Jul 1 2016 Tomáš Mráz <tmraz@redhat.com> - 3.1.20-1
- new upstream release
- properly lock the lock files to be able to safely remove
stale ones
* Mon May 23 2016 Tomáš Mráz <tmraz@redhat.com> - 3.1.18-2
- SIGPIPE should not be ignored in atd (#1338039)

2
sources
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@ -1 +1 @@
f67a7aab557cd5b4a1311079a08acebe at_3.1.18.orig.tar.gz
e7bd7b785b2cbb17e133d6bdc0fb099e at_3.1.20.orig.tar.gz