List device mapper devices.
/* libguestfs - the guestfsd daemon
- * Copyright (C) 2009 Red Hat Inc.
+ * Copyright (C) 2009-2011 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
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
+#include <dirent.h>
#include "daemon.h"
#include "c-ctype.h"
return canonical; /* caller frees */
}
+
+/* List everything in /dev/mapper which *isn't* an LV (RHBZ#688062). */
+char **
+do_list_dm_devices (void)
+{
+ char **ret = NULL;
+ int size = 0, alloc = 0;
+ struct dirent *d;
+ DIR *dir;
+ int r;
+
+ dir = opendir ("/dev/mapper");
+ if (!dir) {
+ reply_with_perror ("opendir: /dev/mapper");
+ return NULL;
+ }
+
+ while (1) {
+ errno = 0;
+ d = readdir (dir);
+ if (d == NULL) break;
+
+ /* Ignore . and .. */
+ if (STREQ (d->d_name, ".") || STREQ (d->d_name, ".."))
+ continue;
+
+ /* Ignore /dev/mapper/control which is used internally by dm. */
+ if (STREQ (d->d_name, "control"))
+ continue;
+
+ size_t len = strlen (d->d_name);
+ char devname[len+64];
+
+ snprintf (devname, len+64, "/dev/mapper/%s", d->d_name);
+
+ /* Ignore dm devices which are LVs. */
+ r = lv_canonical (devname, NULL);
+ if (r == -1) {
+ free_stringslen (ret, size);
+ closedir (dir);
+ return NULL;
+ }
+ if (r)
+ continue;
+
+ /* Not an LV, so add it. */
+ if (add_string (&ret, &size, &alloc, devname) == -1) {
+ closedir (dir);
+ return NULL;
+ }
+ }
+
+ /* Did readdir fail? */
+ if (errno != 0) {
+ reply_with_perror ("readdir: /dev/mapper");
+ free_stringslen (ret, size);
+ closedir (dir);
+ return NULL;
+ }
+
+ /* Close the directory handle. */
+ if (closedir (dir) == -1) {
+ reply_with_perror ("closedir: /dev/mapper");
+ free_stringslen (ret, size);
+ return NULL;
+ }
+
+ /* Sort the output (may be empty). */
+ if (ret != NULL)
+ sort_strings (ret, size);
+
+ /* NULL-terminate the list. */
+ if (add_string (&ret, &size, &alloc, NULL) == -1)
+ return NULL;
+
+ return ret;
+}
If this block device contains LVM volume groups, then
calling C<guestfs_vgscan> followed by C<guestfs_vg_activate_all>
-will make them visible.");
+will make them visible.
+
+Use C<guestfs_list_dm_devices> to list all device mapper
+devices.");
("luks_open_ro", (RErr, [Device "device"; Key "key"; String "mapname"], []), 258, [Optional "luks"],
[],
Any other options required can be passed in the optional C<options>
parameter.");
+ ("list_dm_devices", (RStringList "devices", [], []), 287, [],
+ [],
+ "list device mapper devices",
+ "\
+List all device mapper devices.
+
+The returned list contains C</dev/mapper/*> devices, eg. ones created
+by a previous call to C<guestfs_luks_open>.
+
+Device mapper devices which correspond to logical volumes are I<not>
+returned in this list. Call C<guestfs_lvs> if you want to list logical
+volumes.");
+
]
let all_functions = non_daemon_functions @ daemon_functions
test-inspect-fstab.sh \
test-launch-race.pl \
test-luks.sh \
+ test-luks-list.sh \
test-lvm-filtering.sh \
test-lvm-mapping.pl \
test-noexec-stack.pl \
--- /dev/null
+#!/bin/bash -
+# libguestfs
+# 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# Test LUKS devices appear in the output of list-dm-devices.
+
+set -e
+
+[ -n "$SKIP_TEST_LUKS_SH" ] && {
+ echo "test-luks-list.sh skipped (environment variable set)"
+ exit 0
+}
+
+rm -f test1.img test.output
+
+../fish/guestfish --keys-from-stdin > test.output <<'EOF'
+sparse test1.img 1G
+run
+part-init /dev/sda mbr
+part-add /dev/sda p 64 1048575
+part-add /dev/sda p 1048576 -64
+
+# Create LUKS device with key "key0" in slot 0.
+luks-format /dev/sda1 0
+key0
+
+# Create some unrelated LVs.
+pvcreate /dev/sda2
+vgcreate VG /dev/sda2
+lvcreate LV1 /dev/VG 100
+lvcreate LV2 /dev/VG 200
+lvcreate LV3 /dev/VG 100
+
+# Open the device as 'lukstest'.
+luks-open /dev/sda1 lukstest
+key0
+
+# List devices, '/dev/mapper/lukstest' should appear.
+echo test 1
+list-dm-devices
+
+# Close the device.
+luks-close /dev/mapper/lukstest
+
+# List devices, '/dev/mapper/lukstest' should not appear.
+echo test 2
+list-dm-devices
+
+# Open the device again.
+luks-open /dev/sda1 lukstest
+key0
+
+# Check no LVs appear in list-dm-devices output.
+echo test 3
+list-dm-devices
+
+# Check LUKS device doesn't appear in any of the other lists.
+echo test 4
+list-devices | sed 's,^/dev/[hv]d,/dev/sd,'
+echo test 5
+list-partitions | sed 's,^/dev/[hv]d,/dev/sd,'
+echo test 6
+lvs
+echo test 7
+vgs
+echo test 8
+pvs | sed 's,^/dev/[hv]d,/dev/sd,'
+
+EOF
+
+# Expected vs actual output.
+if [ "$(cat test.output)" != "\
+test 1
+/dev/mapper/lukstest
+test 2
+test 3
+/dev/mapper/lukstest
+test 4
+/dev/sda
+test 5
+/dev/sda1
+/dev/sda2
+test 6
+/dev/VG/LV1
+/dev/VG/LV2
+/dev/VG/LV3
+test 7
+VG
+test 8
+/dev/sda2" ]; then
+ echo "test-luks-list.sh: Unexpected output from test:"
+ cat test.output
+ echo "[end of output]"
+ exit 1
+fi
+
+rm -f test1.img test.output
git.annexia.org / libguestfs.git / commitdiff