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2
.gitignore vendored

@ -1,2 +1,2 @@
SOURCES/libguestfs-1.44.0.tar.gz
SOURCES/libguestfs-1.48.4.tar.gz
SOURCES/libguestfs.keyring

@ -1,2 +1,2 @@
99d241dc4a5ba0dc6111954ed7a872e0b0bb6944 SOURCES/libguestfs-1.44.0.tar.gz
a8754a62256ac488eec3e18bed20f570f785d069 SOURCES/libguestfs-1.48.4.tar.gz
1bbc40f501a7fef9eef2a39b701a71aee2fea7c4 SOURCES/libguestfs.keyring

@ -0,0 +1,96 @@
From e3ebd50abde3b05db86c8965868c866152cd3287 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Thu, 28 Apr 2022 13:16:54 +0100
Subject: [PATCH] New API: guestfs_device_name returning the drive name
For each drive added, return the name. For example calling this with
index 0 will return the string "/dev/sda". I called it
guestfs_device_name (not drive_name) for consistency with the existing
guestfs_device_index function.
You don't really need to call this function. You can follow the
advice here:
https://libguestfs.org/guestfs.3.html#block-device-naming
and assume that drives are added with predictable names like
"/dev/sda", "/dev/sdb", etc.
However it's useful to expose the internal guestfs_int_drive_name
function since especially handling names beyond index 26 is tricky
(https://rwmj.wordpress.com/2011/01/09/how-are-linux-drives-named-beyond-drive-26-devsdz/)
Fixes: https://github.com/libguestfs/libguestfs/issues/80
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
(cherry picked from commit ac00e603f83802634f1d53b1629aee4670eaf31c)
---
generator/actions_core.ml | 24 +++++++++++++++++++++++-
lib/drives.c | 15 +++++++++++++++
2 files changed, 38 insertions(+), 1 deletion(-)
diff --git a/generator/actions_core.ml b/generator/actions_core.ml
index ce9ee39cc..dc12fdc33 100644
--- a/generator/actions_core.ml
+++ b/generator/actions_core.ml
@@ -737,7 +737,29 @@ returns the index of the device in the list of devices.
Index numbers start from 0. The named device must exist,
for example as a string returned from C<guestfs_list_devices>.
-See also C<guestfs_list_devices>, C<guestfs_part_to_dev>." };
+See also C<guestfs_list_devices>, C<guestfs_part_to_dev>,
+C<guestfs_device_name>." };
+
+ { defaults with
+ name = "device_name"; added = (1, 49, 1);
+ style = RString (RPlainString, "name"), [Int "index"], [];
+ tests = [
+ InitEmpty, Always, TestResult (
+ [["device_name"; "0"]], "STREQ (ret, \"/dev/sda\")"), [];
+ InitEmpty, Always, TestResult (
+ [["device_name"; "1"]], "STREQ (ret, \"/dev/sdb\")"), [];
+ InitEmpty, Always, TestLastFail (
+ [["device_name"; "99"]]), []
+ ];
+ shortdesc = "convert device index to name";
+ longdesc = "\
+This function takes a device index and returns the device
+name. For example index C<0> will return the string C</dev/sda>.
+
+The drive index must have been added to the handle.
+
+See also C<guestfs_list_devices>, C<guestfs_part_to_dev>,
+C<guestfs_device_index>." };
{ defaults with
name = "shutdown"; added = (1, 19, 16);
diff --git a/lib/drives.c b/lib/drives.c
index fd95308d2..a6179fc36 100644
--- a/lib/drives.c
+++ b/lib/drives.c
@@ -31,6 +31,7 @@
#include <netdb.h>
#include <arpa/inet.h>
#include <assert.h>
+#include <errno.h>
#include <libintl.h>
#include "c-ctype.h"
@@ -1084,3 +1085,17 @@ guestfs_impl_device_index (guestfs_h *g, const char *device)
error (g, _("%s: device not found"), device);
return r;
}
+
+char *
+guestfs_impl_device_name (guestfs_h *g, int index)
+{
+ char drive_name[64];
+
+ if (index < 0 || index >= g->nr_drives) {
+ guestfs_int_error_errno (g, EINVAL, _("drive index out of range"));
+ return NULL;
+ }
+
+ guestfs_int_drive_name (index, drive_name);
+ return safe_asprintf (g, "/dev/sd%s", drive_name);
+}
--
2.31.1

@ -1,56 +0,0 @@
From 5b6d2b05fe0c4035b9791a751e3133d26c7baa2d Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Fri, 21 Dec 2012 15:50:11 +0000
Subject: [PATCH] RHEL 8: Remove libguestfs live (RHBZ#798980).
This isn't supported in RHEL 8.
Disable daemon tests that require the 'unix' backend.
---
lib/launch-unix.c | 7 +++++++
tests/daemon/Makefile.am | 4 +---
2 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/lib/launch-unix.c b/lib/launch-unix.c
index 0d344f9df..74dd1bb4a 100644
--- a/lib/launch-unix.c
+++ b/lib/launch-unix.c
@@ -37,6 +37,12 @@
static int
launch_unix (guestfs_h *g, void *datav, const char *sockpath)
{
+ error (g,
+ "launch: In RHEL, only the 'libvirt' or 'direct' method is supported.\n"
+ "In particular, \"libguestfs live\" is not supported.");
+ return -1;
+
+#if 0
int r, daemon_sock = -1;
struct sockaddr_un addr;
uint32_t size;
@@ -106,6 +112,7 @@ launch_unix (guestfs_h *g, void *datav, const char *sockpath)
g->conn = NULL;
}
return -1;
+#endif
}
static int
diff --git a/tests/daemon/Makefile.am b/tests/daemon/Makefile.am
index 921e6d1df..8b2887247 100644
--- a/tests/daemon/Makefile.am
+++ b/tests/daemon/Makefile.am
@@ -23,9 +23,7 @@ include $(top_srcdir)/subdir-rules.mk
check_DATA = captive-daemon.pm
-TESTS = \
- test-daemon-start.pl \
- test-btrfs.pl
+TESTS =
TESTS_ENVIRONMENT = $(top_builddir)/run --test
--
2.31.1

@ -1,330 +0,0 @@
From 91b2a6e50211c58ea31a36351ec63c358f708bf9 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Thu, 18 Jul 2013 18:31:53 +0100
Subject: [PATCH] RHEL 8: Remove 9p APIs from RHEL (RHBZ#921710).
---
Makefile.am | 2 +-
daemon/9p.c | 182 --------------------------------------
daemon/Makefile.am | 1 -
docs/C_SOURCE_FILES | 1 -
generator/actions_core.ml | 21 -----
generator/proc_nr.ml | 2 -
gobject/Makefile.inc | 2 -
po/POTFILES | 2 -
8 files changed, 1 insertion(+), 212 deletions(-)
delete mode 100644 daemon/9p.c
diff --git a/Makefile.am b/Makefile.am
index 3df1b6a7a..36e44dfd5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -78,7 +78,7 @@ SUBDIRS += tests/xfs
SUBDIRS += tests/charsets
SUBDIRS += tests/xml
SUBDIRS += tests/mount-local
-SUBDIRS += tests/9p
+#SUBDIRS += tests/9p
SUBDIRS += tests/rsync
SUBDIRS += tests/bigdirs
SUBDIRS += tests/disk-labels
diff --git a/daemon/9p.c b/daemon/9p.c
deleted file mode 100644
index 743a96abd..000000000
--- a/daemon/9p.c
+++ /dev/null
@@ -1,182 +0,0 @@
-/* libguestfs - the guestfsd daemon
- * Copyright (C) 2011 Red Hat 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 of the License, 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, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include <config.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <limits.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <dirent.h>
-#include <fcntl.h>
-
-#include "ignore-value.h"
-
-#include "daemon.h"
-#include "actions.h"
-
-#define BUS_PATH "/sys/bus/virtio/drivers/9pnet_virtio"
-
-static void
-modprobe_9pnet_virtio (void)
-{
- /* Required with Linux 5.6 and maybe earlier kernels. For unclear
- * reasons the module is not an automatic dependency of the 9p
- * module so doesn't get loaded automatically.
- */
- ignore_value (command (NULL, NULL, "modprobe", "9pnet_virtio", NULL));
-}
-
-/* https://bugzilla.redhat.com/show_bug.cgi?id=714981#c1 */
-char **
-do_list_9p (void)
-{
- CLEANUP_FREE_STRINGSBUF DECLARE_STRINGSBUF (r);
- DIR *dir;
-
- modprobe_9pnet_virtio ();
-
- dir = opendir (BUS_PATH);
- if (!dir) {
- perror ("opendir: " BUS_PATH);
- if (errno != ENOENT) {
- reply_with_perror ("opendir: " BUS_PATH);
- return NULL;
- }
-
- /* If this directory doesn't exist, it probably means that
- * the virtio driver isn't loaded. Don't return an error
- * in this case, but return an empty list.
- */
- if (end_stringsbuf (&r) == -1)
- return NULL;
-
- return take_stringsbuf (&r);
- }
-
- while (1) {
- struct dirent *d;
-
- errno = 0;
- d = readdir (dir);
- if (d == NULL) break;
-
- if (STRPREFIX (d->d_name, "virtio")) {
- CLEANUP_FREE char *mount_tag_path = NULL;
- if (asprintf (&mount_tag_path, BUS_PATH "/%s/mount_tag",
- d->d_name) == -1) {
- reply_with_perror ("asprintf");
- closedir (dir);
- return NULL;
- }
-
- /* A bit unclear, but it looks like the virtio transport allows
- * the mount tag length to be unlimited (or up to 65536 bytes).
- * See: linux/include/linux/virtio_9p.h
- */
- CLEANUP_FREE char *mount_tag = read_whole_file (mount_tag_path, NULL);
- if (mount_tag == 0)
- continue;
-
- if (add_string (&r, mount_tag) == -1) {
- closedir (dir);
- return NULL;
- }
- }
- }
-
- /* Check readdir didn't fail */
- if (errno != 0) {
- reply_with_perror ("readdir: /sys/block");
- closedir (dir);
- return NULL;
- }
-
- /* Close the directory handle */
- if (closedir (dir) == -1) {
- reply_with_perror ("closedir: /sys/block");
- return NULL;
- }
-
- /* Sort the tags. */
- if (r.size > 0)
- sort_strings (r.argv, r.size);
-
- /* NULL terminate the list */
- if (end_stringsbuf (&r) == -1)
- return NULL;
-
- return take_stringsbuf (&r);
-}
-
-/* Takes optional arguments, consult optargs_bitmask. */
-int
-do_mount_9p (const char *mount_tag, const char *mountpoint, const char *options)
-{
- CLEANUP_FREE char *mp = NULL, *opts = NULL, *err = NULL;
- struct stat statbuf;
- int r;
-
- ABS_PATH (mountpoint, 0, return -1);
-
- mp = sysroot_path (mountpoint);
- if (!mp) {
- reply_with_perror ("malloc");
- return -1;
- }
-
- /* Check the mountpoint exists and is a directory. */
- if (stat (mp, &statbuf) == -1) {
- reply_with_perror ("%s", mountpoint);
- return -1;
- }
- if (!S_ISDIR (statbuf.st_mode)) {
- reply_with_perror ("%s: mount point is not a directory", mountpoint);
- return -1;
- }
-
- /* Add trans=virtio to the options. */
- if ((optargs_bitmask & GUESTFS_MOUNT_9P_OPTIONS_BITMASK) &&
- STRNEQ (options, "")) {
- if (asprintf (&opts, "trans=virtio,%s", options) == -1) {
- reply_with_perror ("asprintf");
- return -1;
- }
- }
- else {
- opts = strdup ("trans=virtio");
- if (opts == NULL) {
- reply_with_perror ("strdup");
- return -1;
- }
- }
-
- modprobe_9pnet_virtio ();
- r = command (NULL, &err,
- "mount", "-o", opts, "-t", "9p", mount_tag, mp, NULL);
- if (r == -1) {
- reply_with_error ("%s on %s: %s", mount_tag, mountpoint, err);
- return -1;
- }
-
- return 0;
-}
diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index 038be592c..df9dcc4ee 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -82,7 +82,6 @@ guestfsd_SOURCES = \
../common/protocol/guestfs_protocol.h \
../common/utils/cleanups.h \
../common/utils/guestfs-utils.h \
- 9p.c \
acl.c \
actions.h \
available.c \
diff --git a/docs/C_SOURCE_FILES b/docs/C_SOURCE_FILES
index cd5bd2924..831b7e25a 100644
--- a/docs/C_SOURCE_FILES
+++ b/docs/C_SOURCE_FILES
@@ -63,7 +63,6 @@ common/windows/windows.c
common/windows/windows.h
customize/crypt-c.c
customize/perl_edit-c.c
-daemon/9p.c
daemon/acl.c
daemon/actions.h
daemon/augeas.c
diff --git a/generator/actions_core.ml b/generator/actions_core.ml
index 806565b19..37476c93e 100644
--- a/generator/actions_core.ml
+++ b/generator/actions_core.ml
@@ -6157,27 +6157,6 @@ This returns true iff the device exists and contains all zero bytes.
Note that for large devices this can take a long time to run." };
- { defaults with
- name = "list_9p"; added = (1, 11, 12);
- style = RStringList (RPlainString, "mounttags"), [], [];
- shortdesc = "list 9p filesystems";
- longdesc = "\
-List all 9p filesystems attached to the guest. A list of
-mount tags is returned." };
-
- { defaults with
- name = "mount_9p"; added = (1, 11, 12);
- style = RErr, [String (PlainString, "mounttag"); String (PlainString, "mountpoint")], [OString "options"];
- camel_name = "Mount9P";
- shortdesc = "mount 9p filesystem";
- longdesc = "\
-Mount the virtio-9p filesystem with the tag C<mounttag> on the
-directory C<mountpoint>.
-
-If required, C<trans=virtio> will be automatically added to the options.
-Any other options required can be passed in the optional C<options>
-parameter." };
-
{ defaults with
name = "list_dm_devices"; added = (1, 11, 15);
style = RStringList (RDevice, "devices"), [], [];
diff --git a/generator/proc_nr.ml b/generator/proc_nr.ml
index 30e42864f..57976be36 100644
--- a/generator/proc_nr.ml
+++ b/generator/proc_nr.ml
@@ -295,8 +295,6 @@ let proc_nr = [
282, "internal_autosync";
283, "is_zero";
284, "is_zero_device";
-285, "list_9p";
-286, "mount_9p";
287, "list_dm_devices";
288, "ntfsresize";
289, "btrfs_filesystem_resize";
diff --git a/gobject/Makefile.inc b/gobject/Makefile.inc
index 650f8ddac..c4e735967 100644
--- a/gobject/Makefile.inc
+++ b/gobject/Makefile.inc
@@ -94,7 +94,6 @@ guestfs_gobject_headers= \
include/guestfs-gobject/optargs-mksquashfs.h \
include/guestfs-gobject/optargs-mkswap.h \
include/guestfs-gobject/optargs-mktemp.h \
- include/guestfs-gobject/optargs-mount_9p.h \
include/guestfs-gobject/optargs-mount_local.h \
include/guestfs-gobject/optargs-ntfsclone_out.h \
include/guestfs-gobject/optargs-ntfsfix.h \
@@ -188,7 +187,6 @@ guestfs_gobject_sources= \
src/optargs-mksquashfs.c \
src/optargs-mkswap.c \
src/optargs-mktemp.c \
- src/optargs-mount_9p.c \
src/optargs-mount_local.c \
src/optargs-ntfsclone_out.c \
src/optargs-ntfsfix.c \
diff --git a/po/POTFILES b/po/POTFILES
index 69ea7134a..0782e8ceb 100644
--- a/po/POTFILES
+++ b/po/POTFILES
@@ -47,7 +47,6 @@ common/visit/visit.c
common/windows/windows.c
customize/crypt-c.c
customize/perl_edit-c.c
-daemon/9p.c
daemon/acl.c
daemon/augeas.c
daemon/available.c
@@ -277,7 +276,6 @@ gobject/src/optargs-mkfs_btrfs.c
gobject/src/optargs-mksquashfs.c
gobject/src/optargs-mkswap.c
gobject/src/optargs-mktemp.c
-gobject/src/optargs-mount_9p.c
gobject/src/optargs-mount_local.c
gobject/src/optargs-ntfsclone_out.c
gobject/src/optargs-ntfsfix.c
--
2.31.1

@ -0,0 +1,565 @@
From b97b90779d5ea261d5e737f073bb4ec5dc546511 Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Mon, 2 May 2022 10:56:00 +0200
Subject: [PATCH] guestfs_readdir(): rewrite with FileOut transfer, to lift
protocol limit
Currently the guestfs_readdir() API can not list long directories, due to
it sending back the whole directory listing in a single guestfs protocol
response, which is limited to GUESTFS_MESSAGE_MAX (approx. 4MB) in size.
Introduce the "internal_readdir" action, for transferring the directory
listing from the daemon to the library through a FileOut parameter.
Rewrite guestfs_readdir() on top of this new internal function:
- The new "internal_readdir" action is a daemon action. Do not repurpose
the "readdir" proc_nr (138) for "internal_readdir", as some distros ship
the binary appliance to their users, and reusing the proc_nr could
create a mismatch between library & appliance with obscure symptoms.
Replace the old proc_nr (138) with a new proc_nr (511) instead; a
mismatch would then produce a clear error message. Assume the new action
will first be released in libguestfs-1.48.2.
- Turn "readdir" from a daemon action into a non-daemon one. Call the
daemon action guestfs_internal_readdir() manually, receive the FileOut
parameter into a temp file, then deserialize the dirents array from the
temp file.
This patch sneakily fixes an independent bug, too. In the pre-patch
do_readdir() function [daemon/readdir.c], when readdir() returns NULL, we
don't distinguish "end of directory stream" from "readdir() failed". This
rewrite fixes this problem -- I didn't see much value separating out the
fix for the original do_readdir().
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1674392
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20220502085601.15012-2-lersek@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
(cherry picked from commit 45b7f1736b64e9f0741e21e5a9d83a837bd863bf)
---
TODO | 8 ---
daemon/readdir.c | 132 +++++++++++++++++++-------------------
generator/actions_core.ml | 127 +++++++++++++++++++-----------------
generator/proc_nr.ml | 2 +-
lib/MAX_PROC_NR | 2 +-
lib/Makefile.am | 1 +
lib/readdir.c | 131 +++++++++++++++++++++++++++++++++++++
7 files changed, 267 insertions(+), 136 deletions(-)
create mode 100644 lib/readdir.c
diff --git a/TODO b/TODO
index a50f7d73c..513e55f92 100644
--- a/TODO
+++ b/TODO
@@ -484,14 +484,6 @@ this approach works, it doesn't solve the MBR problem, so likely we'd
have to write a library for that (or perhaps go back to sfdisk but
using a very abstracted interface over sfdisk).
-Reimplement some APIs to avoid protocol limits
-----------------------------------------------
-
-Mostly this item was done (eg. commits a69f44f56f and before). The
-most notable API with a protocol limit remaining is:
-
- - guestfs_readdir
-
hivex
-----
diff --git a/daemon/readdir.c b/daemon/readdir.c
index e488f93e7..9ab0b0aec 100644
--- a/daemon/readdir.c
+++ b/daemon/readdir.c
@@ -16,77 +16,67 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#include <config.h>
+#include <config.h> /* HAVE_STRUCT_DIRENT_D_TYPE */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <dirent.h>
+#include <dirent.h> /* readdir() */
+#include <errno.h> /* errno */
+#include <rpc/xdr.h> /* xdrmem_create() */
+#include <stdio.h> /* perror() */
+#include <stdlib.h> /* malloc() */
+#include <sys/types.h> /* opendir() */
-#include "daemon.h"
-#include "actions.h"
+#include "daemon.h" /* reply_with_perror() */
-static void
-free_int_dirent_list (guestfs_int_dirent *p, size_t len)
+/* Has one FileOut parameter. */
+int
+do_internal_readdir (const char *dir)
{
- size_t i;
+ int ret;
+ DIR *dirstream;
+ void *xdr_buf;
+ XDR xdr;
- for (i = 0; i < len; ++i) {
- free (p[i].name);
- }
- free (p);
-}
-
-guestfs_int_dirent_list *
-do_readdir (const char *path)
-{
- guestfs_int_dirent_list *ret;
- guestfs_int_dirent v;
- DIR *dir;
- struct dirent *d;
- size_t i;
-
- ret = malloc (sizeof *ret);
- if (ret == NULL) {
- reply_with_perror ("malloc");
- return NULL;
- }
-
- ret->guestfs_int_dirent_list_len = 0;
- ret->guestfs_int_dirent_list_val = NULL;
+ /* Prepare to fail. */
+ ret = -1;
CHROOT_IN;
- dir = opendir (path);
+ dirstream = opendir (dir);
CHROOT_OUT;
- if (dir == NULL) {
- reply_with_perror ("opendir: %s", path);
- free (ret);
- return NULL;
+ if (dirstream == NULL) {
+ reply_with_perror ("opendir: %s", dir);
+ return ret;
}
- i = 0;
- while ((d = readdir (dir)) != NULL) {
- guestfs_int_dirent *p;
+ xdr_buf = malloc (GUESTFS_MAX_CHUNK_SIZE);
+ if (xdr_buf == NULL) {
+ reply_with_perror ("malloc");
+ goto close_dir;
+ }
+ xdrmem_create (&xdr, xdr_buf, GUESTFS_MAX_CHUNK_SIZE, XDR_ENCODE);
+
+ /* Send an "OK" reply, before starting the file transfer. */
+ reply (NULL, NULL);
+
+ /* From this point on, we can only report errors by canceling the file
+ * transfer.
+ */
+ for (;;) {
+ struct dirent *d;
+ guestfs_int_dirent v;
+
+ errno = 0;
+ d = readdir (dirstream);
+ if (d == NULL) {
+ if (errno == 0)
+ ret = 0;
+ else
+ perror ("readdir");
- p = realloc (ret->guestfs_int_dirent_list_val,
- sizeof (guestfs_int_dirent) * (i+1));
- v.name = strdup (d->d_name);
- if (!p || !v.name) {
- reply_with_perror ("allocate");
- if (p) {
- free_int_dirent_list (p, i);
- } else {
- free_int_dirent_list (ret->guestfs_int_dirent_list_val, i);
- }
- free (v.name);
- free (ret);
- closedir (dir);
- return NULL;
+ break;
}
- ret->guestfs_int_dirent_list_val = p;
+ v.name = d->d_name;
v.ino = d->d_ino;
#ifdef HAVE_STRUCT_DIRENT_D_TYPE
switch (d->d_type) {
@@ -104,19 +94,29 @@ do_readdir (const char *path)
v.ftyp = 'u';
#endif
- ret->guestfs_int_dirent_list_val[i] = v;
+ if (!xdr_guestfs_int_dirent (&xdr, &v)) {
+ fprintf (stderr, "xdr_guestfs_int_dirent failed\n");
+ break;
+ }
- i++;
+ if (send_file_write (xdr_buf, xdr_getpos (&xdr)) != 0)
+ break;
+
+ xdr_setpos (&xdr, 0);
}
- ret->guestfs_int_dirent_list_len = i;
+ /* Finish or cancel the transfer. Note that if (ret == -1) because the library
+ * canceled, we still need to cancel back!
+ */
+ send_file_end (ret == -1);
- if (closedir (dir) == -1) {
- reply_with_perror ("closedir");
- free (ret->guestfs_int_dirent_list_val);
- free (ret);
- return NULL;
- }
+ xdr_destroy (&xdr);
+ free (xdr_buf);
+
+close_dir:
+ if (closedir (dirstream) == -1)
+ /* Best we can do here is log an error. */
+ perror ("closedir");
return ret;
}
diff --git a/generator/actions_core.ml b/generator/actions_core.ml
index dc12fdc33..807150615 100644
--- a/generator/actions_core.ml
+++ b/generator/actions_core.ml
@@ -141,6 +141,66 @@ only useful for printing debug and internal error messages.
For more information on states, see L<guestfs(3)>." };
+ { defaults with
+ name = "readdir"; added = (1, 0, 55);
+ style = RStructList ("entries", "dirent"), [String (Pathname, "dir")], [];
+ progress = true; cancellable = true;
+ shortdesc = "read directories entries";
+ longdesc = "\
+This returns the list of directory entries in directory C<dir>.
+
+All entries in the directory are returned, including C<.> and
+C<..>. The entries are I<not> sorted, but returned in the same
+order as the underlying filesystem.
+
+Also this call returns basic file type information about each
+file. The C<ftyp> field will contain one of the following characters:
+
+=over 4
+
+=item 'b'
+
+Block special
+
+=item 'c'
+
+Char special
+
+=item 'd'
+
+Directory
+
+=item 'f'
+
+FIFO (named pipe)
+
+=item 'l'
+
+Symbolic link
+
+=item 'r'
+
+Regular file
+
+=item 's'
+
+Socket
+
+=item 'u'
+
+Unknown file type
+
+=item '?'
+
+The L<readdir(3)> call returned a C<d_type> field with an
+unexpected value
+
+=back
+
+This function is primarily intended for use by programs. To
+get a simple list of names, use C<guestfs_ls>. To get a printable
+directory for human consumption, use C<guestfs_ll>." };
+
{ defaults with
name = "version"; added = (1, 0, 58);
style = RStruct ("version", "version"), [], [];
@@ -3939,66 +3999,6 @@ L<umask(2)>, C<guestfs_mknod>, C<guestfs_mkdir>.
This call returns the previous umask." };
- { defaults with
- name = "readdir"; added = (1, 0, 55);
- style = RStructList ("entries", "dirent"), [String (Pathname, "dir")], [];
- protocol_limit_warning = true;
- shortdesc = "read directories entries";
- longdesc = "\
-This returns the list of directory entries in directory C<dir>.
-
-All entries in the directory are returned, including C<.> and
-C<..>. The entries are I<not> sorted, but returned in the same
-order as the underlying filesystem.
-
-Also this call returns basic file type information about each
-file. The C<ftyp> field will contain one of the following characters:
-
-=over 4
-
-=item 'b'
-
-Block special
-
-=item 'c'
-
-Char special
-
-=item 'd'
-
-Directory
-
-=item 'f'
-
-FIFO (named pipe)
-
-=item 'l'
-
-Symbolic link
-
-=item 'r'
-
-Regular file
-
-=item 's'
-
-Socket
-
-=item 'u'
-
-Unknown file type
-
-=item '?'
-
-The L<readdir(3)> call returned a C<d_type> field with an
-unexpected value
-
-=back
-
-This function is primarily intended for use by programs. To
-get a simple list of names, use C<guestfs_ls>. To get a printable
-directory for human consumption, use C<guestfs_ll>." };
-
{ defaults with
name = "getxattrs"; added = (1, 0, 59);
style = RStructList ("xattrs", "xattr"), [String (Pathname, "path")], [];
@@ -9713,4 +9713,11 @@ C<guestfs_cryptsetup_open>. The C<device> parameter must be
the name of the mapping device (ie. F</dev/mapper/mapname>)
and I<not> the name of the underlying block device." };
+ { defaults with
+ name = "internal_readdir"; added = (1, 48, 2);
+ style = RErr, [String (Pathname, "dir"); String (FileOut, "filename")], [];
+ visibility = VInternal;
+ shortdesc = "read directories entries";
+ longdesc = "Internal function for readdir." };
+
]
diff --git a/generator/proc_nr.ml b/generator/proc_nr.ml
index b20672ff0..bdced51c9 100644
--- a/generator/proc_nr.ml
+++ b/generator/proc_nr.ml
@@ -152,7 +152,6 @@ let proc_nr = [
135, "mknod_b";
136, "mknod_c";
137, "umask";
-138, "readdir";
139, "sfdiskM";
140, "zfile";
141, "getxattrs";
@@ -514,6 +513,7 @@ let proc_nr = [
508, "cryptsetup_open";
509, "cryptsetup_close";
510, "internal_list_rpm_applications";
+511, "internal_readdir";
]
(* End of list. If adding a new entry, add it at the end of the list
diff --git a/lib/MAX_PROC_NR b/lib/MAX_PROC_NR
index 2bc4cd64b..c0556fb20 100644
--- a/lib/MAX_PROC_NR
+++ b/lib/MAX_PROC_NR
@@ -1 +1 @@
-510
+511
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 144c45588..212bcb94a 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -105,6 +105,7 @@ libguestfs_la_SOURCES = \
private-data.c \
proto.c \
qemu.c \
+ readdir.c \
rescue.c \
stringsbuf.c \
structs-compare.c \
diff --git a/lib/readdir.c b/lib/readdir.c
new file mode 100644
index 000000000..9cb0d7cf6
--- /dev/null
+++ b/lib/readdir.c
@@ -0,0 +1,131 @@
+/* libguestfs
+ * Copyright (C) 2016-2022 Red Hat Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <config.h> /* UNIX_PATH_MAX, needed by "guestfs-internal.h" */
+
+#include <rpc/xdr.h> /* xdrstdio_create() */
+#include <stdint.h> /* UINT32_MAX */
+#include <stdio.h> /* fopen() */
+#include <string.h> /* memset() */
+
+#include "guestfs.h" /* guestfs_internal_readdir() */
+#include "guestfs_protocol.h" /* guestfs_int_dirent */
+#include "guestfs-internal.h" /* guestfs_int_make_temp_path() */
+#include "guestfs-internal-actions.h" /* guestfs_impl_readdir */
+
+struct guestfs_dirent_list *
+guestfs_impl_readdir (guestfs_h *g, const char *dir)
+{
+ struct guestfs_dirent_list *ret;
+ char *tmpfn;
+ FILE *f;
+ off_t fsize;
+ XDR xdr;
+ struct guestfs_dirent_list *dirents;
+ uint32_t alloc_entries;
+ size_t alloc_bytes;
+
+ /* Prepare to fail. */
+ ret = NULL;
+
+ tmpfn = guestfs_int_make_temp_path (g, "readdir", NULL);
+ if (tmpfn == NULL)
+ return ret;
+
+ if (guestfs_internal_readdir (g, dir, tmpfn) == -1)
+ goto drop_tmpfile;
+
+ f = fopen (tmpfn, "r");
+ if (f == NULL) {
+ perrorf (g, "fopen: %s", tmpfn);
+ goto drop_tmpfile;
+ }
+
+ if (fseeko (f, 0, SEEK_END) == -1) {
+ perrorf (g, "fseeko");
+ goto close_tmpfile;
+ }
+ fsize = ftello (f);
+ if (fsize == -1) {
+ perrorf (g, "ftello");
+ goto close_tmpfile;
+ }
+ if (fseeko (f, 0, SEEK_SET) == -1) {
+ perrorf (g, "fseeko");
+ goto close_tmpfile;
+ }
+
+ xdrstdio_create (&xdr, f, XDR_DECODE);
+
+ dirents = safe_malloc (g, sizeof *dirents);
+ dirents->len = 0;
+ alloc_entries = 8;
+ alloc_bytes = alloc_entries * sizeof *dirents->val;
+ dirents->val = safe_malloc (g, alloc_bytes);
+
+ while (xdr_getpos (&xdr) < fsize) {
+ guestfs_int_dirent v;
+ struct guestfs_dirent *d;
+
+ if (dirents->len == alloc_entries) {
+ if (alloc_entries > UINT32_MAX / 2 || alloc_bytes > (size_t)-1 / 2) {
+ error (g, "integer overflow");
+ goto free_dirents;
+ }
+ alloc_entries *= 2u;
+ alloc_bytes *= 2u;
+ dirents->val = safe_realloc (g, dirents->val, alloc_bytes);
+ }
+
+ /* Decoding does not work unless the target buffer is zero-initialized. */
+ memset (&v, 0, sizeof v);
+ if (!xdr_guestfs_int_dirent (&xdr, &v)) {
+ error (g, "xdr_guestfs_int_dirent failed");
+ goto free_dirents;
+ }
+
+ d = &dirents->val[dirents->len];
+ d->ino = v.ino;
+ d->ftyp = v.ftyp;
+ d->name = v.name; /* transfer malloc'd string to "d" */
+
+ dirents->len++;
+ }
+
+ /* Success; transfer "dirents" to "ret". */
+ ret = dirents;
+ dirents = NULL;
+
+ /* Clean up. */
+ xdr_destroy (&xdr);
+
+free_dirents:
+ guestfs_free_dirent_list (dirents);
+
+close_tmpfile:
+ fclose (f);
+
+drop_tmpfile:
+ /* In case guestfs_internal_readdir() failed, it may or may not have created
+ * the temporary file.
+ */
+ unlink (tmpfn);
+ free (tmpfn);
+
+ return ret;
+}
--
2.31.1

@ -0,0 +1,108 @@
From 62cd6c9d2dd62dd24cc04b16437bfb816a6f4357 Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Mon, 2 May 2022 10:56:01 +0200
Subject: [PATCH] guestfs_readdir(): minimize the number of send_file_write()
calls
In guestfs_readdir(), the daemon currently sends each XDR-encoded
"guestfs_int_dirent" to the library with a separate send_file_write()
call.
Determine the largest encoded size (from the longest filename that a
"guestfs_int_dirent" could carry, from readdir()'s "struct dirent"), and
batch up the XDR encodings until the next encoding might not fit in
GUESTFS_MAX_CHUNK_SIZE. Call send_file_write() only then.
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1674392
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20220502085601.15012-3-lersek@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
(cherry picked from commit 4864d21cb8eb991f0fc98d03a068173837cba50e)
---
daemon/readdir.c | 38 ++++++++++++++++++++++++++++++++------
1 file changed, 32 insertions(+), 6 deletions(-)
diff --git a/daemon/readdir.c b/daemon/readdir.c
index 9ab0b0aec..3084ba939 100644
--- a/daemon/readdir.c
+++ b/daemon/readdir.c
@@ -35,6 +35,9 @@ do_internal_readdir (const char *dir)
DIR *dirstream;
void *xdr_buf;
XDR xdr;
+ struct dirent fill;
+ guestfs_int_dirent v;
+ unsigned max_encoded;
/* Prepare to fail. */
ret = -1;
@@ -55,6 +58,20 @@ do_internal_readdir (const char *dir)
}
xdrmem_create (&xdr, xdr_buf, GUESTFS_MAX_CHUNK_SIZE, XDR_ENCODE);
+ /* Calculate the max number of bytes a "guestfs_int_dirent" can be encoded to.
+ */
+ memset (fill.d_name, 'a', sizeof fill.d_name - 1);
+ fill.d_name[sizeof fill.d_name - 1] = '\0';
+ v.ino = INT64_MAX;
+ v.ftyp = '?';
+ v.name = fill.d_name;
+ if (!xdr_guestfs_int_dirent (&xdr, &v)) {
+ fprintf (stderr, "xdr_guestfs_int_dirent failed\n");
+ goto release_xdr;
+ }
+ max_encoded = xdr_getpos (&xdr);
+ xdr_setpos (&xdr, 0);
+
/* Send an "OK" reply, before starting the file transfer. */
reply (NULL, NULL);
@@ -63,7 +80,6 @@ do_internal_readdir (const char *dir)
*/
for (;;) {
struct dirent *d;
- guestfs_int_dirent v;
errno = 0;
d = readdir (dirstream);
@@ -94,22 +110,32 @@ do_internal_readdir (const char *dir)
v.ftyp = 'u';
#endif
+ /* Flush "xdr_buf" if we may not have enough room for encoding "v". */
+ if (GUESTFS_MAX_CHUNK_SIZE - xdr_getpos (&xdr) < max_encoded) {
+ if (send_file_write (xdr_buf, xdr_getpos (&xdr)) != 0)
+ break;
+
+ xdr_setpos (&xdr, 0);
+ }
+
if (!xdr_guestfs_int_dirent (&xdr, &v)) {
fprintf (stderr, "xdr_guestfs_int_dirent failed\n");
break;
}
-
- if (send_file_write (xdr_buf, xdr_getpos (&xdr)) != 0)
- break;
-
- xdr_setpos (&xdr, 0);
}
+ /* Flush "xdr_buf" if the loop completed successfully and "xdr_buf" is not
+ * empty. */
+ if (ret == 0 && xdr_getpos (&xdr) > 0 &&
+ send_file_write (xdr_buf, xdr_getpos (&xdr)) != 0)
+ ret = -1;
+
/* Finish or cancel the transfer. Note that if (ret == -1) because the library
* canceled, we still need to cancel back!
*/
send_file_end (ret == -1);
+release_xdr:
xdr_destroy (&xdr);
free (xdr_buf);
--
2.31.1

@ -1,72 +0,0 @@
From 34f8c6a5eb0eabfba4ab1831b45e2baa73a4b501 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Fri, 19 Sep 2014 13:38:20 +0100
Subject: [PATCH] RHEL 8: Remove User-Mode Linux (RHBZ#1144197).
This isn't supported in RHEL 8.
---
lib/launch-uml.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/lib/launch-uml.c b/lib/launch-uml.c
index 5aec50a57..8b9fcd770 100644
--- a/lib/launch-uml.c
+++ b/lib/launch-uml.c
@@ -44,7 +44,9 @@ struct backend_uml_data {
char umid[UML_UMID_LEN+1]; /* umid=<...> unique ID. */
};
+#if 0
static void print_vmlinux_command_line (guestfs_h *g, char **argv);
+#endif
/* Run uml_mkcow to create a COW overlay. */
static char *
@@ -81,6 +83,7 @@ create_cow_overlay_uml (guestfs_h *g, void *datav, struct drive *drv)
return make_cow_overlay (g, drv->src.u.path);
}
+#if 0
/* Test for features which are not supported by the UML backend.
* Possibly some of these should just be warnings, not errors.
*/
@@ -133,10 +136,17 @@ uml_supported (guestfs_h *g)
return true;
}
+#endif
static int
launch_uml (guestfs_h *g, void *datav, const char *arg)
{
+ error (g,
+ "launch: In RHEL, only the 'libvirt' or 'direct' method is supported.\n"
+ "In particular, User-Mode Linux (UML) is not supported.");
+ return -1;
+
+#if 0
struct backend_uml_data *data = datav;
CLEANUP_FREE_STRINGSBUF DECLARE_STRINGSBUF (cmdline);
int console_sock = -1, daemon_sock = -1;
@@ -496,8 +506,10 @@ launch_uml (guestfs_h *g, void *datav, const char *arg)
}
g->state = CONFIG;
return -1;
+#endif
}
+#if 0
/* This is called from the forked subprocess just before vmlinux runs,
* so it can just print the message straight to stderr, where it will
* be picked up and funnelled through the usual appliance event API.
@@ -527,6 +539,7 @@ print_vmlinux_command_line (guestfs_h *g, char **argv)
fputc ('\n', stderr);
}
+#endif
static int
shutdown_uml (guestfs_h *g, void *datav, int check_for_errors)
--
2.31.1

@ -0,0 +1,123 @@
From e4901a4e83f0ab59a525095d2fe1c7f1a38c0aac Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Wed, 4 May 2022 15:41:52 +0200
Subject: [PATCH] lib: launch-direct: ignore drive "iface" parameter
Rich said in <https://bugzilla.redhat.com/show_bug.cgi?id=1844341#c1>:
> The libvirt backend has never allowed the iface parameter. We should
> probably ignore it in the direct backend since it's never been possible
> to use this parameter correctly.
Remove the handling of "iface" in the direct (QEMU) backend. Refresh the
documentation regarding both backends.
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1844341
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20220504134155.11832-2-lersek@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
(cherry picked from commit 3eb830dbaee12c8dc4566cab226ed2af0e0f2d8c)
---
generator/actions_core_deprecated.ml | 8 +++-
lib/launch-direct.c | 59 ++++++----------------------
2 files changed, 19 insertions(+), 48 deletions(-)
diff --git a/generator/actions_core_deprecated.ml b/generator/actions_core_deprecated.ml
index 00dde3d2a..f1040a0e9 100644
--- a/generator/actions_core_deprecated.ml
+++ b/generator/actions_core_deprecated.ml
@@ -73,7 +73,9 @@ of C<guestfs_add_drive_ro>." };
shortdesc = "add a drive specifying the QEMU block emulation to use";
longdesc = "\
This is the same as C<guestfs_add_drive> but it allows you
-to specify the QEMU interface emulation to use at run time." };
+to specify the QEMU interface emulation to use at run time.
+The libvirt backend rejects a non-empty C<iface> argument.
+The direct backend ignores C<iface>." };
{ defaults with
name = "add_drive_ro_with_if"; added = (1, 0, 84);
@@ -83,7 +85,9 @@ to specify the QEMU interface emulation to use at run time." };
shortdesc = "add a drive read-only specifying the QEMU block emulation to use";
longdesc = "\
This is the same as C<guestfs_add_drive_ro> but it allows you
-to specify the QEMU interface emulation to use at run time." };
+to specify the QEMU interface emulation to use at run time.
+The libvirt backend rejects a non-empty C<iface> argument.
+The direct backend ignores C<iface>." };
{ defaults with
name = "lstatlist"; added = (1, 0, 77);
diff --git a/lib/launch-direct.c b/lib/launch-direct.c
index b292b9c26..ff0eaeb62 100644
--- a/lib/launch-direct.c
+++ b/lib/launch-direct.c
@@ -296,52 +296,19 @@ static int
add_drive (guestfs_h *g, struct backend_direct_data *data,
struct qemuopts *qopts, size_t i, struct drive *drv)
{
- /* If there's an explicit 'iface', use it. Otherwise default to
- * virtio-scsi.
- */
- if (drv->iface && STREQ (drv->iface, "virtio")) { /* virtio-blk */
- start_list ("-drive") {
- if (add_drive_standard_params (g, data, qopts, i, drv) == -1)
- return -1;
- append_list ("if=none");
- } end_list ();
- start_list ("-device") {
- append_list (VIRTIO_DEVICE_NAME ("virtio-blk"));
- append_list_format ("drive=hd%zu", i);
- if (drv->disk_label)
- append_list_format ("serial=%s", drv->disk_label);
- if (add_device_blocksize_params (g, qopts, drv) == -1)
- return -1;
- } end_list ();
- }
-#if defined(__arm__) || defined(__aarch64__) || defined(__powerpc__)
- else if (drv->iface && STREQ (drv->iface, "ide")) {
- error (g, "'ide' interface does not work on ARM or PowerPC");
- return -1;
- }
-#endif
- else if (drv->iface) {
- start_list ("-drive") {
- if (add_drive_standard_params (g, data, qopts, i, drv) == -1)
- return -1;
- append_list_format ("if=%s", drv->iface);
- } end_list ();
- }
- else /* default case: virtio-scsi */ {
- start_list ("-drive") {
- if (add_drive_standard_params (g, data, qopts, i, drv) == -1)
- return -1;
- append_list ("if=none");
- } end_list ();
- start_list ("-device") {
- append_list ("scsi-hd");
- append_list_format ("drive=hd%zu", i);
- if (drv->disk_label)
- append_list_format ("serial=%s", drv->disk_label);
- if (add_device_blocksize_params (g, qopts, drv) == -1)
- return -1;
- } end_list ();
- }
+ start_list ("-drive") {
+ if (add_drive_standard_params (g, data, qopts, i, drv) == -1)
+ return -1;
+ append_list ("if=none");
+ } end_list ();
+ start_list ("-device") {
+ append_list ("scsi-hd");
+ append_list_format ("drive=hd%zu", i);
+ if (drv->disk_label)
+ append_list_format ("serial=%s", drv->disk_label);
+ if (add_device_blocksize_params (g, qopts, drv) == -1)
+ return -1;
+ } end_list ();
return 0;
--
2.31.1

@ -0,0 +1,245 @@
From f13297315495144775f6249e9e24dc5f18f6f902 Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Wed, 4 May 2022 15:41:53 +0200
Subject: [PATCH] lib: drive_create_data, drive: remove field "iface"
Representing "iface" in the "drive_create_data" and "drive" structures is
now useless; the direct backend ignores "iface", while the libvirt one
rejects it unless it is empty. Unify both backends -- make them both
ignore "iface". (Which only relaxes the libvirt backend, so it cannot
cause compatibility problems.) This lets us remove the fields. Update the
documentation as well.
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1844341
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20220504134155.11832-3-lersek@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
(cherry picked from commit f68eaee1d6c41f91e7dfd2aa9e7d238cca7b8a4c)
---
generator/actions_core_deprecated.ml | 6 ++----
lib/drives.c | 31 +++++-----------------------
lib/guestfs-internal.h | 1 -
lib/launch-libvirt.c | 6 ------
lib/libvirt-domain.c | 15 --------------
5 files changed, 7 insertions(+), 52 deletions(-)
diff --git a/generator/actions_core_deprecated.ml b/generator/actions_core_deprecated.ml
index f1040a0e9..c23f4a330 100644
--- a/generator/actions_core_deprecated.ml
+++ b/generator/actions_core_deprecated.ml
@@ -74,8 +74,7 @@ of C<guestfs_add_drive_ro>." };
longdesc = "\
This is the same as C<guestfs_add_drive> but it allows you
to specify the QEMU interface emulation to use at run time.
-The libvirt backend rejects a non-empty C<iface> argument.
-The direct backend ignores C<iface>." };
+Both the direct and the libvirt backends ignore C<iface>." };
{ defaults with
name = "add_drive_ro_with_if"; added = (1, 0, 84);
@@ -86,8 +85,7 @@ The direct backend ignores C<iface>." };
longdesc = "\
This is the same as C<guestfs_add_drive_ro> but it allows you
to specify the QEMU interface emulation to use at run time.
-The libvirt backend rejects a non-empty C<iface> argument.
-The direct backend ignores C<iface>." };
+Both the direct and the libvirt backends ignore C<iface>." };
{ defaults with
name = "lstatlist"; added = (1, 0, 77);
diff --git a/lib/drives.c b/lib/drives.c
index a6179fc36..8fe46a41c 100644
--- a/lib/drives.c
+++ b/lib/drives.c
@@ -53,7 +53,6 @@ struct drive_create_data {
const char *secret;
bool readonly;
const char *format;
- const char *iface;
const char *name;
const char *disk_label;
const char *cachemode;
@@ -110,7 +109,6 @@ create_drive_file (guestfs_h *g,
drv->src.format = data->format ? safe_strdup (g, data->format) : NULL;
drv->readonly = data->readonly;
- drv->iface = data->iface ? safe_strdup (g, data->iface) : NULL;
drv->name = data->name ? safe_strdup (g, data->name) : NULL;
drv->disk_label = data->disk_label ? safe_strdup (g, data->disk_label) : NULL;
drv->cachemode = data->cachemode ? safe_strdup (g, data->cachemode) : NULL;
@@ -147,7 +145,6 @@ create_drive_non_file (guestfs_h *g,
drv->src.format = data->format ? safe_strdup (g, data->format) : NULL;
drv->readonly = data->readonly;
- drv->iface = data->iface ? safe_strdup (g, data->iface) : NULL;
drv->name = data->name ? safe_strdup (g, data->name) : NULL;
drv->disk_label = data->disk_label ? safe_strdup (g, data->disk_label) : NULL;
drv->cachemode = data->cachemode ? safe_strdup (g, data->cachemode) : NULL;
@@ -470,7 +467,6 @@ free_drive_struct (struct drive *drv)
{
free_drive_source (&drv->src);
free (drv->overlay);
- free (drv->iface);
free (drv->name);
free (drv->disk_label);
free (drv->cachemode);
@@ -511,14 +507,12 @@ drive_to_string (guestfs_h *g, const struct drive *drv)
s_blocksize = safe_asprintf (g, "%d", drv->blocksize);
return safe_asprintf
- (g, "%s%s%s%s protocol=%s%s%s%s%s%s%s%s%s%s%s%s%s",
+ (g, "%s%s%s%s protocol=%s%s%s%s%s%s%s%s%s%s%s",
drv->src.u.path,
drv->readonly ? " readonly" : "",
drv->src.format ? " format=" : "",
drv->src.format ? : "",
guestfs_int_drive_protocol_to_string (drv->src.protocol),
- drv->iface ? " iface=" : "",
- drv->iface ? : "",
drv->name ? " name=" : "",
drv->name ? : "",
drv->disk_label ? " label=" : "",
@@ -747,8 +741,6 @@ guestfs_impl_add_drive_opts (guestfs_h *g, const char *filename,
? optargs->readonly : false;
data.format = optargs->bitmask & GUESTFS_ADD_DRIVE_OPTS_FORMAT_BITMASK
? optargs->format : NULL;
- data.iface = optargs->bitmask & GUESTFS_ADD_DRIVE_OPTS_IFACE_BITMASK
- ? optargs->iface : NULL;
data.name = optargs->bitmask & GUESTFS_ADD_DRIVE_OPTS_NAME_BITMASK
? optargs->name : NULL;
data.disk_label = optargs->bitmask & GUESTFS_ADD_DRIVE_OPTS_LABEL_BITMASK
@@ -804,12 +796,6 @@ guestfs_impl_add_drive_opts (guestfs_h *g, const char *filename,
free_drive_servers (data.servers, data.nr_servers);
return -1;
}
- if (data.iface && !VALID_FORMAT_IFACE (data.iface)) {
- error (g, _("%s parameter is empty or contains disallowed characters"),
- "iface");
- free_drive_servers (data.servers, data.nr_servers);
- return -1;
- }
if (data.disk_label && !VALID_DISK_LABEL (data.disk_label)) {
error (g, _("label parameter is empty, too long, or contains disallowed characters"));
free_drive_servers (data.servers, data.nr_servers);
@@ -935,24 +921,17 @@ guestfs_impl_add_drive_ro (guestfs_h *g, const char *filename)
int
guestfs_impl_add_drive_with_if (guestfs_h *g, const char *filename,
- const char *iface)
+ const char *iface ATTRIBUTE_UNUSED)
{
- const struct guestfs_add_drive_opts_argv optargs = {
- .bitmask = GUESTFS_ADD_DRIVE_OPTS_IFACE_BITMASK,
- .iface = iface,
- };
-
- return guestfs_add_drive_opts_argv (g, filename, &optargs);
+ return guestfs_add_drive_opts_argv (g, filename, NULL);
}
int
guestfs_impl_add_drive_ro_with_if (guestfs_h *g, const char *filename,
- const char *iface)
+ const char *iface ATTRIBUTE_UNUSED)
{
const struct guestfs_add_drive_opts_argv optargs = {
- .bitmask = GUESTFS_ADD_DRIVE_OPTS_IFACE_BITMASK
- | GUESTFS_ADD_DRIVE_OPTS_READONLY_BITMASK,
- .iface = iface,
+ .bitmask = GUESTFS_ADD_DRIVE_OPTS_READONLY_BITMASK,
.readonly = true,
};
diff --git a/lib/guestfs-internal.h b/lib/guestfs-internal.h
index 5bb00bc10..16755cfb3 100644
--- a/lib/guestfs-internal.h
+++ b/lib/guestfs-internal.h
@@ -298,7 +298,6 @@ struct drive {
/* Various per-drive flags. */
bool readonly;
- char *iface;
char *name;
char *disk_label;
char *cachemode;
diff --git a/lib/launch-libvirt.c b/lib/launch-libvirt.c
index de342b425..03d69e027 100644
--- a/lib/launch-libvirt.c
+++ b/lib/launch-libvirt.c
@@ -1472,12 +1472,6 @@ construct_libvirt_xml_disk (guestfs_h *g,
const char *type, *uuid;
int r;
- /* XXX We probably could support this if we thought about it some more. */
- if (drv->iface) {
- error (g, _("iface parameter is not supported by the libvirt backend"));
- return -1;
- }
-
start_element ("disk") {
attribute ("device", "disk");
diff --git a/lib/libvirt-domain.c b/lib/libvirt-domain.c
index 3050680fa..fafbf50ea 100644
--- a/lib/libvirt-domain.c
+++ b/lib/libvirt-domain.c
@@ -68,7 +68,6 @@ guestfs_impl_add_domain (guestfs_h *g, const char *domain_name,
int live;
int allowuuid;
const char *readonlydisk;
- const char *iface;
const char *cachemode;
const char *discard;
bool copyonread;
@@ -78,8 +77,6 @@ guestfs_impl_add_domain (guestfs_h *g, const char *domain_name,
? optargs->libvirturi : NULL;
readonly = optargs->bitmask & GUESTFS_ADD_DOMAIN_READONLY_BITMASK
? optargs->readonly : 0;
- iface = optargs->bitmask & GUESTFS_ADD_DOMAIN_IFACE_BITMASK
- ? optargs->iface : NULL;
live = optargs->bitmask & GUESTFS_ADD_DOMAIN_LIVE_BITMASK
? optargs->live : 0;
allowuuid = optargs->bitmask & GUESTFS_ADD_DOMAIN_ALLOWUUID_BITMASK
@@ -136,10 +133,6 @@ guestfs_impl_add_domain (guestfs_h *g, const char *domain_name,
optargs2.bitmask |= GUESTFS_ADD_LIBVIRT_DOM_READONLY_BITMASK;
optargs2.readonly = readonly;
}
- if (iface) {
- optargs2.bitmask |= GUESTFS_ADD_LIBVIRT_DOM_IFACE_BITMASK;
- optargs2.iface = iface;
- }
if (live) {
error (g, _("libguestfs live support was removed in libguestfs 1.48"));
goto cleanup;
@@ -193,7 +186,6 @@ guestfs_impl_add_libvirt_dom (guestfs_h *g, void *domvp,
virDomainPtr dom = domvp;
ssize_t r;
int readonly;
- const char *iface;
const char *cachemode;
const char *discard;
bool copyonread;
@@ -208,9 +200,6 @@ guestfs_impl_add_libvirt_dom (guestfs_h *g, void *domvp,
readonly =
optargs->bitmask & GUESTFS_ADD_LIBVIRT_DOM_READONLY_BITMASK
? optargs->readonly : 0;
- iface =
- optargs->bitmask & GUESTFS_ADD_LIBVIRT_DOM_IFACE_BITMASK
- ? optargs->iface : NULL;
live =
optargs->bitmask & GUESTFS_ADD_LIBVIRT_DOM_LIVE_BITMASK
? optargs->live : 0;
@@ -289,10 +278,6 @@ guestfs_impl_add_libvirt_dom (guestfs_h *g, void *domvp,
data.optargs.bitmask = 0;
data.readonly = readonly;
data.readonlydisk = readonlydisk;
- if (iface) {
- data.optargs.bitmask |= GUESTFS_ADD_DRIVE_OPTS_IFACE_BITMASK;
- data.optargs.iface = iface;
- }
if (cachemode) {
data.optargs.bitmask |= GUESTFS_ADD_DRIVE_OPTS_CACHEMODE_BITMASK;
data.optargs.cachemode = cachemode;
--
2.31.1

@ -1,37 +0,0 @@
From dbd1eaab6a478cf0c3ea093a56b3d04c29278615 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Tue, 12 Jan 2021 10:23:11 +0000
Subject: [PATCH] build: Avoid warnings about unknown pragmas.
In commit 4bbbf03b8bc266ed2b63c461cd0945250bb134fe we started to
ignore bogus GCC 11 warnings. Unfortunately earlier versions of GCC
don't know about those pragmas so give warnings [hence errors in
developer builds] like:
tsk.c:75:32: error: unknown option after '#pragma GCC diagnostic' kind [-Werror=pragmas]
Turn off these warnings.
Updates: commit 4bbbf03b8bc266ed2b63c461cd0945250bb134fe
(cherry picked from commit 812f837c97f48ce0c26a0e02286fb9180c282923)
---
m4/guestfs-c.m4 | 3 +++
1 file changed, 3 insertions(+)
diff --git a/m4/guestfs-c.m4 b/m4/guestfs-c.m4
index 25ffea0d9..bbb4db464 100644
--- a/m4/guestfs-c.m4
+++ b/m4/guestfs-c.m4
@@ -108,6 +108,9 @@ gl_WARN_ADD([-Wformat-truncation=1])
dnl GCC 9 at level 2 gives apparently bogus errors when %.*s is used.
gl_WARN_ADD([-Wformat-overflow=1])
+dnl GCC < 11 gives warnings when disabling GCC 11 warnings.
+gl_WARN_ADD([-Wno-pragmas])
+
AC_SUBST([WARN_CFLAGS])
NO_SNV_CFLAGS=
--
2.31.1

@ -0,0 +1,82 @@
From f408b24d8d8f5b5f4e1a25c1046c3a18107c8d80 Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Wed, 4 May 2022 15:41:54 +0200
Subject: [PATCH] lib: rename VALID_FORMAT_IFACE to VALID_FORMAT
We no longer use VALID_FORMAT_IFACE for validating "iface"; rename the
macro to reflect that we only check "format" with it.
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1844341
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20220504134155.11832-4-lersek@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
(cherry picked from commit c8e3caf9e6000ea2f5cfbe30ffe1240317bb4578)
---
lib/drives.c | 4 ++--
lib/unit-tests.c | 16 ++++++++--------
2 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/lib/drives.c b/lib/drives.c
index 8fe46a41c..c5a208468 100644
--- a/lib/drives.c
+++ b/lib/drives.c
@@ -593,7 +593,7 @@ guestfs_int_free_drives (guestfs_h *g)
* Check string parameter matches regular expression
* C<^[-_[:alnum:]]+$> (in C locale).
*/
-#define VALID_FORMAT_IFACE(str) \
+#define VALID_FORMAT(str) \
guestfs_int_string_is_valid ((str), 1, 0, \
VALID_FLAG_ALPHA|VALID_FLAG_DIGIT, "-_")
@@ -790,7 +790,7 @@ guestfs_impl_add_drive_opts (guestfs_h *g, const char *filename,
return -1;
}
- if (data.format && !VALID_FORMAT_IFACE (data.format)) {
+ if (data.format && !VALID_FORMAT (data.format)) {
error (g, _("%s parameter is empty or contains disallowed characters"),
"format");
free_drive_servers (data.servers, data.nr_servers);
diff --git a/lib/unit-tests.c b/lib/unit-tests.c
index 62457ccba..0e550cb98 100644
--- a/lib/unit-tests.c
+++ b/lib/unit-tests.c
@@ -434,7 +434,7 @@ test_stringsbuf (void)
}
/* Use the same macros as in lib/drives.c */
-#define VALID_FORMAT_IFACE(str) \
+#define VALID_FORMAT(str) \
guestfs_int_string_is_valid ((str), 1, 0, \
VALID_FLAG_ALPHA|VALID_FLAG_DIGIT, "-_")
#define VALID_DISK_LABEL(str) \
@@ -446,18 +446,18 @@ test_stringsbuf (void)
static void
test_valid (void)
{
- assert (!VALID_FORMAT_IFACE (""));
+ assert (!VALID_FORMAT (""));
assert (!VALID_DISK_LABEL (""));
assert (!VALID_HOSTNAME (""));
assert (!VALID_DISK_LABEL ("012345678901234567890"));
- assert (VALID_FORMAT_IFACE ("abc"));
- assert (VALID_FORMAT_IFACE ("ABC"));
- assert (VALID_FORMAT_IFACE ("abc123"));
- assert (VALID_FORMAT_IFACE ("abc123-"));
- assert (VALID_FORMAT_IFACE ("abc123_"));
- assert (!VALID_FORMAT_IFACE ("abc123."));
+ assert (VALID_FORMAT ("abc"));
+ assert (VALID_FORMAT ("ABC"));
+ assert (VALID_FORMAT ("abc123"));