2 * Copyright (C) 2010 Red Hat Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
38 #include "ignore-value.h"
42 #include "guestfs-internal.h"
43 #include "guestfs-internal-actions.h"
44 #include "guestfs_protocol.h"
46 #if defined(HAVE_PCRE) && defined(HAVE_HIVEX)
48 /* Compile all the regular expressions once when the shared library is
49 * loaded. PCRE is thread safe so we're supposedly OK here if
50 * multiple threads call into the libguestfs API functions below
53 static pcre *re_fedora;
54 static pcre *re_rhel_old;
56 static pcre *re_rhel_no_minor;
57 static pcre *re_major_minor;
58 static pcre *re_aug_seq;
60 static pcre *re_first_partition;
61 static pcre *re_freebsd;
62 static pcre *re_windows_version;
64 static void compile_regexps (void) __attribute__((constructor));
65 static void free_regexps (void) __attribute__((destructor));
68 compile_regexps (void)
73 #define COMPILE(re,pattern,options) \
75 re = pcre_compile ((pattern), (options), &err, &offset, NULL); \
77 ignore_value (write (2, err, strlen (err))); \
82 COMPILE (re_fedora, "Fedora release (\\d+)", 0);
84 "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+).*Update (\\d+)", 0);
86 "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+)\\.(\\d+)", 0);
87 COMPILE (re_rhel_no_minor,
88 "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+)", 0);
89 COMPILE (re_major_minor, "(\\d+)\\.(\\d+)", 0);
90 COMPILE (re_aug_seq, "/\\d+$", 0);
91 COMPILE (re_xdev, "^/dev/(?:h|s|v|xv)d([a-z]\\d*)$", 0);
92 COMPILE (re_first_partition, "^/dev/(?:h|s|v)d.1$", 0);
93 COMPILE (re_freebsd, "^/dev/ad(\\d+)s(\\d+)([a-z])$", 0);
94 COMPILE (re_windows_version, "^(\\d+)\\.(\\d+)", 0);
100 pcre_free (re_fedora);
101 pcre_free (re_rhel_old);
103 pcre_free (re_rhel_no_minor);
104 pcre_free (re_major_minor);
105 pcre_free (re_aug_seq);
107 pcre_free (re_first_partition);
108 pcre_free (re_freebsd);
109 pcre_free (re_windows_version);
112 /* The main inspection code. */
113 static int check_for_filesystem_on (guestfs_h *g, const char *device);
116 guestfs__inspect_os (guestfs_h *g)
118 /* Remove any information previously stored in the handle. */
119 guestfs___free_inspect_info (g);
121 if (guestfs_umount_all (g) == -1)
124 /* Iterate over all possible devices. Try to mount each
125 * (read-only). Examine ones which contain filesystems and add that
126 * information to the handle.
128 /* Look to see if any devices directly contain filesystems (RHBZ#590167). */
130 devices = guestfs_list_devices (g);
135 for (i = 0; devices[i] != NULL; ++i) {
136 if (check_for_filesystem_on (g, devices[i]) == -1) {
137 guestfs___free_string_list (devices);
138 guestfs___free_inspect_info (g);
142 guestfs___free_string_list (devices);
144 /* Look at all partitions. */
146 partitions = guestfs_list_partitions (g);
147 if (partitions == NULL) {
148 guestfs___free_inspect_info (g);
152 for (i = 0; partitions[i] != NULL; ++i) {
153 if (check_for_filesystem_on (g, partitions[i]) == -1) {
154 guestfs___free_string_list (partitions);
155 guestfs___free_inspect_info (g);
159 guestfs___free_string_list (partitions);
161 /* Look at all LVs. */
162 if (guestfs___feature_available (g, "lvm2")) {
164 lvs = guestfs_lvs (g);
166 guestfs___free_inspect_info (g);
170 for (i = 0; lvs[i] != NULL; ++i) {
171 if (check_for_filesystem_on (g, lvs[i]) == -1) {
172 guestfs___free_string_list (lvs);
173 guestfs___free_inspect_info (g);
177 guestfs___free_string_list (lvs);
180 /* At this point we have, in the handle, a list of all filesystems
181 * found and data about each one. Now we assemble the list of
182 * filesystems which are root devices and return that to the user.
183 * Fall through to guestfs__inspect_get_roots to do that.
185 char **ret = guestfs__inspect_get_roots (g);
187 guestfs___free_inspect_info (g);
191 /* Find out if 'device' contains a filesystem. If it does, add
192 * another entry in g->fses.
194 static int check_filesystem (guestfs_h *g, const char *device);
195 static int check_linux_root (guestfs_h *g, struct inspect_fs *fs);
196 static int check_freebsd_root (guestfs_h *g, struct inspect_fs *fs);
197 static void check_architecture (guestfs_h *g, struct inspect_fs *fs);
198 static int check_fstab (guestfs_h *g, struct inspect_fs *fs);
199 static int check_windows_root (guestfs_h *g, struct inspect_fs *fs);
200 static int check_windows_arch (guestfs_h *g, struct inspect_fs *fs);
201 static int check_windows_registry (guestfs_h *g, struct inspect_fs *fs);
202 static char *resolve_windows_path_silently (guestfs_h *g, const char *);
203 static int extend_fses (guestfs_h *g);
204 static int parse_unsigned_int (guestfs_h *g, const char *str);
205 static int add_fstab_entry (guestfs_h *g, struct inspect_fs *fs,
206 const char *spec, const char *mp);
207 static char *resolve_fstab_device (guestfs_h *g, const char *spec);
208 static void check_package_format (guestfs_h *g, struct inspect_fs *fs);
209 static void check_package_management (guestfs_h *g, struct inspect_fs *fs);
212 check_for_filesystem_on (guestfs_h *g, const char *device)
214 /* Get vfs-type in order to check if it's a Linux(?) swap device.
215 * If there's an error we should ignore it, so to do that we have to
216 * temporarily replace the error handler with a null one.
218 guestfs_error_handler_cb old_error_cb = g->error_cb;
220 char *vfs_type = guestfs_vfs_type (g, device);
221 g->error_cb = old_error_cb;
223 int is_swap = vfs_type && STREQ (vfs_type, "swap");
226 fprintf (stderr, "check_for_filesystem_on: %s (%s)\n",
227 device, vfs_type ? vfs_type : "failed to get vfs type");
231 if (extend_fses (g) == -1)
233 g->fses[g->nr_fses-1].is_swap = 1;
237 /* Try mounting the device. As above, ignore errors. */
239 int r = guestfs_mount_ro (g, device, "/");
240 if (r == -1 && vfs_type && STREQ (vfs_type, "ufs")) /* Hack for the *BSDs. */
241 r = guestfs_mount_vfs (g, "ro,ufstype=ufs2", "ufs", device, "/");
243 g->error_cb = old_error_cb;
247 /* Do the rest of the checks. */
248 r = check_filesystem (g, device);
250 /* Unmount the filesystem. */
251 if (guestfs_umount_all (g) == -1)
258 check_filesystem (guestfs_h *g, const char *device)
260 if (extend_fses (g) == -1)
263 struct inspect_fs *fs = &g->fses[g->nr_fses-1];
265 fs->device = safe_strdup (g, device);
266 fs->is_mountable = 1;
268 /* Optimize some of the tests by avoiding multiple tests of the same thing. */
269 int is_dir_etc = guestfs_is_dir (g, "/etc") > 0;
270 int is_dir_bin = guestfs_is_dir (g, "/bin") > 0;
271 int is_dir_share = guestfs_is_dir (g, "/share") > 0;
274 if (guestfs_is_file (g, "/grub/menu.lst") > 0 ||
275 guestfs_is_file (g, "/grub/grub.conf") > 0)
276 fs->content = FS_CONTENT_LINUX_BOOT;
278 else if (is_dir_etc &&
280 guestfs_is_file (g, "/etc/freebsd-update.conf") > 0 &&
281 guestfs_is_file (g, "/etc/fstab") > 0) {
282 /* Ignore /dev/sda1 which is a shadow of the real root filesystem
283 * that is probably /dev/sda5 (see:
284 * http://www.freebsd.org/doc/handbook/disk-organization.html)
286 if (match (g, device, re_first_partition))
290 fs->content = FS_CONTENT_FREEBSD_ROOT;
291 if (check_freebsd_root (g, fs) == -1)
295 else if (is_dir_etc &&
297 guestfs_is_file (g, "/etc/fstab") > 0) {
299 fs->content = FS_CONTENT_LINUX_ROOT;
300 if (check_linux_root (g, fs) == -1)
303 /* Linux /usr/local? */
304 else if (is_dir_etc &&
307 guestfs_exists (g, "/local") == 0 &&
308 guestfs_is_file (g, "/etc/fstab") == 0)
309 fs->content = FS_CONTENT_LINUX_USR_LOCAL;
311 else if (is_dir_etc &&
314 guestfs_exists (g, "/local") > 0 &&
315 guestfs_is_file (g, "/etc/fstab") == 0)
316 fs->content = FS_CONTENT_LINUX_USR;
318 else if (guestfs_is_dir (g, "/log") > 0 &&
319 guestfs_is_dir (g, "/run") > 0 &&
320 guestfs_is_dir (g, "/spool") > 0)
321 fs->content = FS_CONTENT_LINUX_VAR;
323 else if (guestfs_is_file (g, "/AUTOEXEC.BAT") > 0 ||
324 guestfs_is_file (g, "/autoexec.bat") > 0 ||
325 guestfs_is_dir (g, "/Program Files") > 0 ||
326 guestfs_is_dir (g, "/WINDOWS") > 0 ||
327 guestfs_is_dir (g, "/Windows") > 0 ||
328 guestfs_is_dir (g, "/windows") > 0 ||
329 guestfs_is_dir (g, "/WIN32") > 0 ||
330 guestfs_is_dir (g, "/Win32") > 0 ||
331 guestfs_is_dir (g, "/WINNT") > 0 ||
332 guestfs_is_file (g, "/boot.ini") > 0 ||
333 guestfs_is_file (g, "/ntldr") > 0) {
335 fs->content = FS_CONTENT_WINDOWS_ROOT;
336 if (check_windows_root (g, fs) == -1)
343 /* Set fs->product_name to the first line of the release file. */
345 parse_release_file (guestfs_h *g, struct inspect_fs *fs,
346 const char *release_filename)
348 char **product_name = guestfs_head_n (g, 1, release_filename);
349 if (product_name == NULL)
351 if (product_name[0] == NULL) {
352 error (g, _("%s: file is empty"), release_filename);
353 guestfs___free_string_list (product_name);
357 /* Note that this string becomes owned by the handle and will
358 * be freed by guestfs___free_inspect_info.
360 fs->product_name = product_name[0];
366 /* Parse generic MAJOR.MINOR from the fs->product_name string. */
368 parse_major_minor (guestfs_h *g, struct inspect_fs *fs)
372 if (match2 (g, fs->product_name, re_major_minor, &major, &minor)) {
373 fs->major_version = parse_unsigned_int (g, major);
375 if (fs->major_version == -1) {
379 fs->minor_version = parse_unsigned_int (g, minor);
381 if (fs->minor_version == -1)
387 /* Ubuntu has /etc/lsb-release containing:
388 * DISTRIB_ID=Ubuntu # Distro
389 * DISTRIB_RELEASE=10.04 # Version
390 * DISTRIB_CODENAME=lucid
391 * DISTRIB_DESCRIPTION="Ubuntu 10.04.1 LTS" # Product name
393 * [Ubuntu-derived ...] Linux Mint was found to have this:
394 * DISTRIB_ID=LinuxMint
396 * DISTRIB_CODENAME=julia
397 * DISTRIB_DESCRIPTION="Linux Mint 10 Julia"
398 * Linux Mint also has /etc/linuxmint/info with more information,
399 * but we can use the LSB file.
402 * LSB_VERSION=lsb-4.0-amd64:lsb-4.0-noarch
403 * DISTRIB_ID=MandrivaLinux
404 * DISTRIB_RELEASE=2010.1
405 * DISTRIB_CODENAME=Henry_Farman
406 * DISTRIB_DESCRIPTION="Mandriva Linux 2010.1"
407 * Mandriva also has a normal release file called /etc/mandriva-release.
410 parse_lsb_release (guestfs_h *g, struct inspect_fs *fs)
416 lines = guestfs_head_n (g, 10, "/etc/lsb-release");
420 for (i = 0; lines[i] != NULL; ++i) {
421 if (fs->distro == 0 &&
422 STREQ (lines[i], "DISTRIB_ID=Ubuntu")) {
423 fs->distro = OS_DISTRO_UBUNTU;
426 else if (fs->distro == 0 &&
427 STREQ (lines[i], "DISTRIB_ID=LinuxMint")) {
428 fs->distro = OS_DISTRO_LINUX_MINT;
431 else if (fs->distro == 0 &&
432 STREQ (lines[i], "DISTRIB_ID=MandrivaLinux")) {
433 fs->distro = OS_DISTRO_MANDRIVA;
436 else if (STRPREFIX (lines[i], "DISTRIB_RELEASE=")) {
438 if (match2 (g, &lines[i][16], re_major_minor, &major, &minor)) {
439 fs->major_version = parse_unsigned_int (g, major);
441 if (fs->major_version == -1) {
443 guestfs___free_string_list (lines);
446 fs->minor_version = parse_unsigned_int (g, minor);
448 if (fs->minor_version == -1) {
449 guestfs___free_string_list (lines);
454 else if (fs->product_name == NULL &&
455 (STRPREFIX (lines[i], "DISTRIB_DESCRIPTION=\"") ||
456 STRPREFIX (lines[i], "DISTRIB_DESCRIPTION='"))) {
457 size_t len = strlen (lines[i]) - 21 - 1;
458 fs->product_name = safe_strndup (g, &lines[i][21], len);
461 else if (fs->product_name == NULL &&
462 STRPREFIX (lines[i], "DISTRIB_DESCRIPTION=")) {
463 size_t len = strlen (lines[i]) - 20;
464 fs->product_name = safe_strndup (g, &lines[i][20], len);
469 guestfs___free_string_list (lines);
473 /* The currently mounted device is known to be a Linux root. Try to
474 * determine from this the distro, version, etc. Also parse
475 * /etc/fstab to determine the arrangement of mountpoints and
476 * associated devices.
479 check_linux_root (guestfs_h *g, struct inspect_fs *fs)
483 fs->type = OS_TYPE_LINUX;
485 if (guestfs_exists (g, "/etc/lsb-release") > 0) {
486 r = parse_lsb_release (g, fs);
487 if (r == -1) /* error */
489 if (r == 1) /* ok - detected the release from this file */
490 goto skip_release_checks;
493 if (guestfs_exists (g, "/etc/redhat-release") > 0) {
494 fs->distro = OS_DISTRO_REDHAT_BASED; /* Something generic Red Hat-like. */
496 if (parse_release_file (g, fs, "/etc/redhat-release") == -1)
500 if ((major = match1 (g, fs->product_name, re_fedora)) != NULL) {
501 fs->distro = OS_DISTRO_FEDORA;
502 fs->major_version = parse_unsigned_int (g, major);
504 if (fs->major_version == -1)
507 else if (match2 (g, fs->product_name, re_rhel_old, &major, &minor) ||
508 match2 (g, fs->product_name, re_rhel, &major, &minor)) {
509 fs->distro = OS_DISTRO_RHEL;
510 fs->major_version = parse_unsigned_int (g, major);
512 if (fs->major_version == -1) {
516 fs->minor_version = parse_unsigned_int (g, minor);
518 if (fs->minor_version == -1)
521 else if ((major = match1 (g, fs->product_name, re_rhel_no_minor)) != NULL) {
522 fs->distro = OS_DISTRO_RHEL;
523 fs->major_version = parse_unsigned_int (g, major);
525 if (fs->major_version == -1)
527 fs->minor_version = 0;
530 else if (guestfs_exists (g, "/etc/debian_version") > 0) {
531 fs->distro = OS_DISTRO_DEBIAN;
533 if (parse_release_file (g, fs, "/etc/debian_version") == -1)
536 if (parse_major_minor (g, fs) == -1)
539 else if (guestfs_exists (g, "/etc/pardus-release") > 0) {
540 fs->distro = OS_DISTRO_PARDUS;
542 if (parse_release_file (g, fs, "/etc/pardus-release") == -1)
545 if (parse_major_minor (g, fs) == -1)
548 else if (guestfs_exists (g, "/etc/arch-release") > 0) {
549 fs->distro = OS_DISTRO_ARCHLINUX;
551 /* /etc/arch-release file is empty and I can't see a way to
552 * determine the actual release or product string.
555 else if (guestfs_exists (g, "/etc/gentoo-release") > 0) {
556 fs->distro = OS_DISTRO_GENTOO;
558 if (parse_release_file (g, fs, "/etc/gentoo-release") == -1)
561 if (parse_major_minor (g, fs) == -1)
564 else if (guestfs_exists (g, "/etc/meego-release") > 0) {
565 fs->distro = OS_DISTRO_MEEGO;
567 if (parse_release_file (g, fs, "/etc/meego-release") == -1)
570 if (parse_major_minor (g, fs) == -1)
574 skip_release_checks:;
576 /* If distro test above was successful, work out the package format. */
577 check_package_format (g, fs);
578 check_package_management (g, fs);
580 /* Determine the architecture. */
581 check_architecture (g, fs);
583 /* We already know /etc/fstab exists because it's part of the test
584 * for Linux root above. We must now parse this file to determine
585 * which filesystems are used by the operating system and how they
588 if (check_fstab (g, fs) == -1)
594 /* The currently mounted device is known to be a FreeBSD root. */
596 check_freebsd_root (guestfs_h *g, struct inspect_fs *fs)
600 fs->type = OS_TYPE_FREEBSD;
602 /* FreeBSD has no authoritative version file. The version number is
603 * in /etc/motd, which the system administrator might edit, but
604 * we'll use that anyway.
607 if (guestfs_exists (g, "/etc/motd") > 0) {
608 if (parse_release_file (g, fs, "/etc/motd") == -1)
611 if (parse_major_minor (g, fs) == -1)
615 /* Determine the architecture. */
616 check_architecture (g, fs);
618 /* We already know /etc/fstab exists because it's part of the test above. */
619 if (check_fstab (g, fs) == -1)
626 check_architecture (guestfs_h *g, struct inspect_fs *fs)
628 const char *binaries[] =
629 { "/bin/bash", "/bin/ls", "/bin/echo", "/bin/rm", "/bin/sh" };
632 for (i = 0; i < sizeof binaries / sizeof binaries[0]; ++i) {
633 if (guestfs_is_file (g, binaries[i]) > 0) {
634 /* Ignore errors from file_architecture call. */
635 guestfs_error_handler_cb old_error_cb = g->error_cb;
637 char *arch = guestfs_file_architecture (g, binaries[i]);
638 g->error_cb = old_error_cb;
641 /* String will be owned by handle, freed by
642 * guestfs___free_inspect_info.
651 static int check_fstab_aug_open (guestfs_h *g, struct inspect_fs *fs);
654 check_fstab (guestfs_h *g, struct inspect_fs *fs)
659 /* Security: Refuse to do this if /etc/fstab is huge. */
660 size = guestfs_filesize (g, "/etc/fstab");
661 if (size == -1 || size > 100000) {
662 error (g, _("size of /etc/fstab unreasonable (%" PRIi64 " bytes)"), size);
666 /* XXX What if !feature_available (g, "augeas")? */
667 if (guestfs_aug_init (g, "/", 16|32) == -1)
670 /* Tell Augeas to only load /etc/fstab (thanks Raphaël Pinson). */
671 guestfs_aug_rm (g, "/augeas/load//incl[. != \"/etc/fstab\"]");
672 guestfs_aug_load (g);
674 r = check_fstab_aug_open (g, fs);
675 guestfs_aug_close (g);
683 check_fstab_aug_open (guestfs_h *g, struct inspect_fs *fs)
685 char **lines = guestfs_aug_ls (g, "/files/etc/fstab");
689 if (lines[0] == NULL) {
690 error (g, _("could not parse /etc/fstab or empty file"));
691 guestfs___free_string_list (lines);
697 for (i = 0; lines[i] != NULL; ++i) {
698 /* Ignore comments. Only care about sequence lines which
701 if (match (g, lines[i], re_aug_seq)) {
702 snprintf (augpath, sizeof augpath, "%s/spec", lines[i]);
703 char *spec = guestfs_aug_get (g, augpath);
705 guestfs___free_string_list (lines);
709 snprintf (augpath, sizeof augpath, "%s/file", lines[i]);
710 char *mp = guestfs_aug_get (g, augpath);
712 guestfs___free_string_list (lines);
717 int r = add_fstab_entry (g, fs, spec, mp);
722 guestfs___free_string_list (lines);
728 guestfs___free_string_list (lines);
732 /* Add a filesystem and possibly a mountpoint entry for
733 * the root filesystem 'fs'.
735 * 'spec' is the fstab spec field, which might be a device name or a
736 * pseudodevice or 'UUID=...' or 'LABEL=...'.
738 * 'mp' is the mount point, which could also be 'swap' or 'none'.
741 add_fstab_entry (guestfs_h *g, struct inspect_fs *fs,
742 const char *spec, const char *mp)
744 /* Ignore certain mountpoints. */
745 if (STRPREFIX (mp, "/dev/") ||
746 STREQ (mp, "/dev") ||
747 STRPREFIX (mp, "/media/") ||
748 STRPREFIX (mp, "/proc/") ||
749 STREQ (mp, "/proc") ||
750 STRPREFIX (mp, "/selinux/") ||
751 STREQ (mp, "/selinux") ||
752 STRPREFIX (mp, "/sys/") ||
756 /* Ignore /dev/fd (floppy disks) (RHBZ#642929) and CD-ROM drives. */
757 if ((STRPREFIX (spec, "/dev/fd") && c_isdigit (spec[7])) ||
758 STREQ (spec, "/dev/floppy") ||
759 STREQ (spec, "/dev/cdrom"))
762 /* Resolve UUID= and LABEL= to the actual device. */
764 if (STRPREFIX (spec, "UUID="))
765 device = guestfs_findfs_uuid (g, &spec[5]);
766 else if (STRPREFIX (spec, "LABEL="))
767 device = guestfs_findfs_label (g, &spec[6]);
768 /* Ignore "/.swap" (Pardus) and pseudo-devices like "tmpfs". */
769 else if (STRPREFIX (spec, "/dev/"))
770 /* Resolve guest block device names. */
771 device = resolve_fstab_device (g, spec);
773 /* If we haven't resolved the device successfully by this point,
774 * we don't care, just ignore it.
779 char *mountpoint = safe_strdup (g, mp);
781 /* Add this to the fstab entry in 'fs'.
782 * Note these are further filtered by guestfs_inspect_get_mountpoints
783 * and guestfs_inspect_get_filesystems.
785 size_t n = fs->nr_fstab + 1;
786 struct inspect_fstab_entry *p;
788 p = realloc (fs->fstab, n * sizeof (struct inspect_fstab_entry));
790 perrorf (g, "realloc");
799 /* These are owned by the handle and freed by guestfs___free_inspect_info. */
800 fs->fstab[n-1].device = device;
801 fs->fstab[n-1].mountpoint = mountpoint;
804 fprintf (stderr, "fstab: device=%s mountpoint=%s\n", device, mountpoint);
809 /* Resolve block device name to the libguestfs device name, eg.
810 * /dev/xvdb1 => /dev/vdb1; and /dev/mapper/VG-LV => /dev/VG/LV. This
811 * assumes that disks were added in the same order as they appear to
812 * the real VM, which is a reasonable assumption to make. Return
813 * anything we don't recognize unchanged.
816 resolve_fstab_device (guestfs_h *g, const char *spec)
820 char *bsddisk, *bsdslice, *bsdpart;
822 if (STRPREFIX (spec, "/dev/mapper/")) {
823 /* LVM2 does some strange munging on /dev/mapper paths for VGs and
824 * LVs which contain '-' character:
826 * ><fs> lvcreate LV--test VG--test 32
827 * ><fs> debug ls /dev/mapper
828 * VG----test-LV----test
830 * This makes it impossible to reverse those paths directly, so
831 * we have implemented lvm_canonical_lv_name in the daemon.
833 device = guestfs_lvm_canonical_lv_name (g, spec);
835 else if ((a1 = match1 (g, spec, re_xdev)) != NULL) {
836 char **devices = guestfs_list_devices (g);
841 for (count = 0; devices[count] != NULL; count++)
844 size_t i = a1[0] - 'a'; /* a1[0] is always [a-z] because of regex. */
846 size_t len = strlen (devices[i]) + strlen (a1) + 16;
847 device = safe_malloc (g, len);
848 snprintf (device, len, "%s%s", devices[i], &a1[1]);
852 guestfs___free_string_list (devices);
854 else if (match3 (g, spec, re_freebsd, &bsddisk, &bsdslice, &bsdpart)) {
855 /* FreeBSD disks are organized quite differently. See:
856 * http://www.freebsd.org/doc/handbook/disk-organization.html
857 * FreeBSD "partitions" are exposed as quasi-extended partitions
858 * numbered from 5 in Linux. I have no idea what happens when you
859 * have multiple "slices" (the FreeBSD term for MBR partitions).
861 int disk = parse_unsigned_int (g, bsddisk);
862 int slice = parse_unsigned_int (g, bsdslice);
863 int part = bsdpart[0] - 'a' /* counting from 0 */;
868 if (disk == -1 || disk > 26 ||
869 slice <= 0 || slice > 1 /* > 4 .. see comment above */ ||
870 part < 0 || part >= 26)
873 device = safe_asprintf (g, "/dev/sd%c%d", disk + 'a', part + 5);
877 /* Didn't match device pattern, return original spec unchanged. */
879 device = safe_strdup (g, spec);
884 /* XXX Handling of boot.ini in the Perl version was pretty broken. It
885 * essentially didn't do anything for modern Windows guests.
886 * Therefore I've omitted all that code.
889 check_windows_root (guestfs_h *g, struct inspect_fs *fs)
891 fs->type = OS_TYPE_WINDOWS;
892 fs->distro = OS_DISTRO_WINDOWS;
894 /* Try to find Windows systemroot using some common locations. */
895 const char *systemroots[] =
896 { "/windows", "/winnt", "/win32", "/win" };
898 char *systemroot = NULL;
900 systemroot == NULL && i < sizeof systemroots / sizeof systemroots[0];
902 systemroot = resolve_windows_path_silently (g, systemroots[i]);
906 error (g, _("cannot resolve Windows %%SYSTEMROOT%%"));
911 fprintf (stderr, "windows %%SYSTEMROOT%% = %s", systemroot);
913 /* Freed by guestfs___free_inspect_info. */
914 fs->windows_systemroot = systemroot;
916 if (check_windows_arch (g, fs) == -1)
919 if (check_windows_registry (g, fs) == -1)
922 check_package_format (g, fs);
923 check_package_management (g, fs);
929 check_windows_arch (guestfs_h *g, struct inspect_fs *fs)
931 size_t len = strlen (fs->windows_systemroot) + 32;
933 snprintf (cmd_exe, len, "%s/system32/cmd.exe", fs->windows_systemroot);
935 char *cmd_exe_path = resolve_windows_path_silently (g, cmd_exe);
939 char *arch = guestfs_file_architecture (g, cmd_exe_path);
943 fs->arch = arch; /* freed by guestfs___free_inspect_info */
948 /* At the moment, pull just the ProductName and version numbers from
949 * the registry. In future there is a case for making many more
950 * registry fields available to callers.
953 check_windows_registry (guestfs_h *g, struct inspect_fs *fs)
955 TMP_TEMPLATE_ON_STACK (dir);
956 #define dir_len (strlen (dir))
957 #define software_hive_len (dir_len + 16)
958 char software_hive[software_hive_len];
959 #define cmd_len (dir_len + 16)
962 size_t len = strlen (fs->windows_systemroot) + 64;
964 snprintf (software, len, "%s/system32/config/software",
965 fs->windows_systemroot);
967 char *software_path = resolve_windows_path_silently (g, software);
969 /* If the software hive doesn't exist, just accept that we cannot
970 * find product_name etc.
976 hive_value_h *values = NULL;
978 /* Security: Refuse to download registry if it is huge. */
979 int64_t size = guestfs_filesize (g, software_path);
980 if (size == -1 || size > 100000000) {
981 error (g, _("size of %s unreasonable (%" PRIi64 " bytes)"),
982 software_path, size);
986 if (mkdtemp (dir) == NULL) {
987 perrorf (g, "mkdtemp");
991 snprintf (software_hive, software_hive_len, "%s/software", dir);
993 if (guestfs_download (g, software_path, software_hive) == -1)
996 h = hivex_open (software_hive, g->verbose ? HIVEX_OPEN_VERBOSE : 0);
998 perrorf (g, "hivex_open");
1002 hive_node_h node = hivex_root (h);
1003 const char *hivepath[] =
1004 { "Microsoft", "Windows NT", "CurrentVersion" };
1007 node != 0 && i < sizeof hivepath / sizeof hivepath[0];
1009 node = hivex_node_get_child (h, node, hivepath[i]);
1013 perrorf (g, "hivex: cannot locate HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion");
1017 values = hivex_node_values (h, node);
1019 for (i = 0; values[i] != 0; ++i) {
1020 char *key = hivex_value_key (h, values[i]);
1022 perrorf (g, "hivex_value_key");
1026 if (STRCASEEQ (key, "ProductName")) {
1027 fs->product_name = hivex_value_string (h, values[i]);
1028 if (!fs->product_name) {
1029 perrorf (g, "hivex_value_string");
1034 else if (STRCASEEQ (key, "CurrentVersion")) {
1035 char *version = hivex_value_string (h, values[i]);
1037 perrorf (g, "hivex_value_string");
1041 char *major, *minor;
1042 if (match2 (g, version, re_windows_version, &major, &minor)) {
1043 fs->major_version = parse_unsigned_int (g, major);
1045 if (fs->major_version == -1) {
1051 fs->minor_version = parse_unsigned_int (g, minor);
1053 if (fs->minor_version == -1) {
1069 if (h) hivex_close (h);
1071 free (software_path);
1073 /* Free up the temporary directory. Note the directory name cannot
1074 * contain shell meta-characters because of the way it was
1075 * constructed above.
1077 snprintf (cmd, cmd_len, "rm -rf %s", dir);
1078 ignore_value (system (cmd));
1080 #undef software_hive_len
1087 resolve_windows_path_silently (guestfs_h *g, const char *path)
1089 guestfs_error_handler_cb old_error_cb = g->error_cb;
1091 char *ret = guestfs_case_sensitive_path (g, path);
1092 g->error_cb = old_error_cb;
1097 extend_fses (guestfs_h *g)
1099 size_t n = g->nr_fses + 1;
1100 struct inspect_fs *p;
1102 p = realloc (g->fses, n * sizeof (struct inspect_fs));
1104 perrorf (g, "realloc");
1111 memset (&g->fses[n-1], 0, sizeof (struct inspect_fs));
1116 /* Parse small, unsigned ints, as used in version numbers. */
1118 parse_unsigned_int (guestfs_h *g, const char *str)
1121 int r = xstrtol (str, NULL, 10, &ret, "");
1122 if (r != LONGINT_OK) {
1123 error (g, _("could not parse integer in version number: %s"), str);
1129 /* At the moment, package format and package management is just a
1130 * simple function of the distro and major_version fields, so these
1131 * can never return an error. We might be cleverer in future.
1134 check_package_format (guestfs_h *g, struct inspect_fs *fs)
1136 switch (fs->distro) {
1137 case OS_DISTRO_FEDORA:
1138 case OS_DISTRO_MEEGO:
1139 case OS_DISTRO_REDHAT_BASED:
1140 case OS_DISTRO_RHEL:
1141 case OS_DISTRO_MANDRIVA:
1142 fs->package_format = OS_PACKAGE_FORMAT_RPM;
1145 case OS_DISTRO_DEBIAN:
1146 case OS_DISTRO_UBUNTU:
1147 case OS_DISTRO_LINUX_MINT:
1148 fs->package_format = OS_PACKAGE_FORMAT_DEB;
1151 case OS_DISTRO_ARCHLINUX:
1152 fs->package_format = OS_PACKAGE_FORMAT_PACMAN;
1154 case OS_DISTRO_GENTOO:
1155 fs->package_format = OS_PACKAGE_FORMAT_EBUILD;
1157 case OS_DISTRO_PARDUS:
1158 fs->package_format = OS_PACKAGE_FORMAT_PISI;
1161 case OS_DISTRO_WINDOWS:
1162 case OS_DISTRO_UNKNOWN:
1164 fs->package_format = OS_PACKAGE_FORMAT_UNKNOWN;
1170 check_package_management (guestfs_h *g, struct inspect_fs *fs)
1172 switch (fs->distro) {
1173 case OS_DISTRO_FEDORA:
1174 case OS_DISTRO_MEEGO:
1175 fs->package_management = OS_PACKAGE_MANAGEMENT_YUM;
1178 case OS_DISTRO_REDHAT_BASED:
1179 case OS_DISTRO_RHEL:
1180 if (fs->major_version >= 5)
1181 fs->package_management = OS_PACKAGE_MANAGEMENT_YUM;
1183 fs->package_management = OS_PACKAGE_MANAGEMENT_UP2DATE;
1186 case OS_DISTRO_DEBIAN:
1187 case OS_DISTRO_UBUNTU:
1188 case OS_DISTRO_LINUX_MINT:
1189 fs->package_management = OS_PACKAGE_MANAGEMENT_APT;
1192 case OS_DISTRO_ARCHLINUX:
1193 fs->package_management = OS_PACKAGE_MANAGEMENT_PACMAN;
1195 case OS_DISTRO_GENTOO:
1196 fs->package_management = OS_PACKAGE_MANAGEMENT_PORTAGE;
1198 case OS_DISTRO_PARDUS:
1199 fs->package_management = OS_PACKAGE_MANAGEMENT_PISI;
1201 case OS_DISTRO_MANDRIVA:
1202 fs->package_management = OS_PACKAGE_MANAGEMENT_URPMI;
1205 case OS_DISTRO_WINDOWS:
1206 case OS_DISTRO_UNKNOWN:
1208 fs->package_management = OS_PACKAGE_MANAGEMENT_UNKNOWN;
1213 static struct inspect_fs *
1214 search_for_root (guestfs_h *g, const char *root)
1216 if (g->nr_fses == 0) {
1217 error (g, _("no inspection data: call guestfs_inspect_os first"));
1222 struct inspect_fs *fs;
1223 for (i = 0; i < g->nr_fses; ++i) {
1225 if (fs->is_root && STREQ (root, fs->device))
1229 error (g, _("%s: root device not found: only call this function with a root device previously returned by guestfs_inspect_os"),
1235 guestfs__inspect_get_roots (guestfs_h *g)
1237 /* NB. Doesn't matter if g->nr_fses == 0. We just return an empty
1238 * list in this case.
1243 for (i = 0; i < g->nr_fses; ++i)
1244 if (g->fses[i].is_root)
1247 char **ret = calloc (count+1, sizeof (char *));
1249 perrorf (g, "calloc");
1254 for (i = 0; i < g->nr_fses; ++i) {
1255 if (g->fses[i].is_root) {
1256 ret[count] = safe_strdup (g, g->fses[i].device);
1266 guestfs__inspect_get_type (guestfs_h *g, const char *root)
1268 struct inspect_fs *fs = search_for_root (g, root);
1274 case OS_TYPE_LINUX: ret = safe_strdup (g, "linux"); break;
1275 case OS_TYPE_WINDOWS: ret = safe_strdup (g, "windows"); break;
1276 case OS_TYPE_FREEBSD: ret = safe_strdup (g, "freebsd"); break;
1277 case OS_TYPE_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
1284 guestfs__inspect_get_arch (guestfs_h *g, const char *root)
1286 struct inspect_fs *fs = search_for_root (g, root);
1290 return safe_strdup (g, fs->arch ? : "unknown");
1294 guestfs__inspect_get_distro (guestfs_h *g, const char *root)
1296 struct inspect_fs *fs = search_for_root (g, root);
1301 switch (fs->distro) {
1302 case OS_DISTRO_ARCHLINUX: ret = safe_strdup (g, "archlinux"); break;
1303 case OS_DISTRO_DEBIAN: ret = safe_strdup (g, "debian"); break;
1304 case OS_DISTRO_FEDORA: ret = safe_strdup (g, "fedora"); break;
1305 case OS_DISTRO_GENTOO: ret = safe_strdup (g, "gentoo"); break;
1306 case OS_DISTRO_LINUX_MINT: ret = safe_strdup (g, "linuxmint"); break;
1307 case OS_DISTRO_MANDRIVA: ret = safe_strdup (g, "mandriva"); break;
1308 case OS_DISTRO_MEEGO: ret = safe_strdup (g, "meego"); break;
1309 case OS_DISTRO_PARDUS: ret = safe_strdup (g, "pardus"); break;
1310 case OS_DISTRO_REDHAT_BASED: ret = safe_strdup (g, "redhat-based"); break;
1311 case OS_DISTRO_RHEL: ret = safe_strdup (g, "rhel"); break;
1312 case OS_DISTRO_WINDOWS: ret = safe_strdup (g, "windows"); break;
1313 case OS_DISTRO_UBUNTU: ret = safe_strdup (g, "ubuntu"); break;
1314 case OS_DISTRO_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
1321 guestfs__inspect_get_major_version (guestfs_h *g, const char *root)
1323 struct inspect_fs *fs = search_for_root (g, root);
1327 return fs->major_version;
1331 guestfs__inspect_get_minor_version (guestfs_h *g, const char *root)
1333 struct inspect_fs *fs = search_for_root (g, root);
1337 return fs->minor_version;
1341 guestfs__inspect_get_product_name (guestfs_h *g, const char *root)
1343 struct inspect_fs *fs = search_for_root (g, root);
1347 return safe_strdup (g, fs->product_name ? : "unknown");
1351 guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root)
1353 struct inspect_fs *fs = search_for_root (g, root);
1357 if (!fs->windows_systemroot) {
1358 error (g, _("not a Windows guest, or systemroot could not be determined"));
1362 return safe_strdup (g, fs->windows_systemroot);
1366 guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root)
1368 struct inspect_fs *fs = search_for_root (g, root);
1374 /* If no fstab information (Windows) return just the root. */
1375 if (fs->nr_fstab == 0) {
1376 ret = calloc (3, sizeof (char *));
1377 ret[0] = safe_strdup (g, "/");
1378 ret[1] = safe_strdup (g, root);
1383 #define CRITERION fs->fstab[i].mountpoint[0] == '/'
1384 size_t i, count = 0;
1385 for (i = 0; i < fs->nr_fstab; ++i)
1389 /* Hashtables have 2N+1 entries. */
1390 ret = calloc (2*count+1, sizeof (char *));
1392 perrorf (g, "calloc");
1397 for (i = 0; i < fs->nr_fstab; ++i)
1399 ret[2*count] = safe_strdup (g, fs->fstab[i].mountpoint);
1400 ret[2*count+1] = safe_strdup (g, fs->fstab[i].device);
1409 guestfs__inspect_get_filesystems (guestfs_h *g, const char *root)
1411 struct inspect_fs *fs = search_for_root (g, root);
1417 /* If no fstab information (Windows) return just the root. */
1418 if (fs->nr_fstab == 0) {
1419 ret = calloc (2, sizeof (char *));
1420 ret[0] = safe_strdup (g, root);
1425 ret = calloc (fs->nr_fstab + 1, sizeof (char *));
1427 perrorf (g, "calloc");
1432 for (i = 0; i < fs->nr_fstab; ++i)
1433 ret[i] = safe_strdup (g, fs->fstab[i].device);
1439 guestfs__inspect_get_package_format (guestfs_h *g, const char *root)
1441 struct inspect_fs *fs = search_for_root (g, root);
1446 switch (fs->package_format) {
1447 case OS_PACKAGE_FORMAT_RPM: ret = safe_strdup (g, "rpm"); break;
1448 case OS_PACKAGE_FORMAT_DEB: ret = safe_strdup (g, "deb"); break;
1449 case OS_PACKAGE_FORMAT_PACMAN: ret = safe_strdup (g, "pacman"); break;
1450 case OS_PACKAGE_FORMAT_EBUILD: ret = safe_strdup (g, "ebuild"); break;
1451 case OS_PACKAGE_FORMAT_PISI: ret = safe_strdup (g, "pisi"); break;
1452 case OS_PACKAGE_FORMAT_UNKNOWN:
1454 ret = safe_strdup (g, "unknown");
1462 guestfs__inspect_get_package_management (guestfs_h *g, const char *root)
1464 struct inspect_fs *fs = search_for_root (g, root);
1469 switch (fs->package_management) {
1470 case OS_PACKAGE_MANAGEMENT_YUM: ret = safe_strdup (g, "yum"); break;
1471 case OS_PACKAGE_MANAGEMENT_UP2DATE: ret = safe_strdup (g, "up2date"); break;
1472 case OS_PACKAGE_MANAGEMENT_APT: ret = safe_strdup (g, "apt"); break;
1473 case OS_PACKAGE_MANAGEMENT_PACMAN: ret = safe_strdup (g, "pacman"); break;
1474 case OS_PACKAGE_MANAGEMENT_PORTAGE: ret = safe_strdup (g, "portage"); break;
1475 case OS_PACKAGE_MANAGEMENT_PISI: ret = safe_strdup (g, "pisi"); break;
1476 case OS_PACKAGE_MANAGEMENT_URPMI: ret = safe_strdup (g, "urpmi"); break;
1477 case OS_PACKAGE_MANAGEMENT_UNKNOWN:
1479 ret = safe_strdup (g, "unknown");
1486 #else /* no PCRE or hivex at compile time */
1488 /* XXX These functions should be in an optgroup. */
1490 #define NOT_IMPL(r) \
1491 error (g, _("inspection API not available since this version of libguestfs was compiled without PCRE or hivex libraries")); \
1495 guestfs__inspect_os (guestfs_h *g)
1501 guestfs__inspect_get_roots (guestfs_h *g)
1507 guestfs__inspect_get_type (guestfs_h *g, const char *root)
1513 guestfs__inspect_get_arch (guestfs_h *g, const char *root)
1519 guestfs__inspect_get_distro (guestfs_h *g, const char *root)
1525 guestfs__inspect_get_major_version (guestfs_h *g, const char *root)
1531 guestfs__inspect_get_minor_version (guestfs_h *g, const char *root)
1537 guestfs__inspect_get_product_name (guestfs_h *g, const char *root)
1543 guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root)
1549 guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root)
1555 guestfs__inspect_get_filesystems (guestfs_h *g, const char *root)
1561 guestfs__inspect_get_package_format (guestfs_h *g, const char *root)
1567 guestfs__inspect_get_package_management (guestfs_h *g, const char *root)
1572 #endif /* no PCRE or hivex at compile time */
1575 guestfs___free_inspect_info (guestfs_h *g)
1578 for (i = 0; i < g->nr_fses; ++i) {
1579 free (g->fses[i].device);
1580 free (g->fses[i].product_name);
1581 free (g->fses[i].arch);
1582 free (g->fses[i].windows_systemroot);
1584 for (j = 0; j < g->fses[i].nr_fstab; ++j) {
1585 free (g->fses[i].fstab[j].device);
1586 free (g->fses[i].fstab[j].mountpoint);
1588 free (g->fses[i].fstab);
1595 /* In the Perl code this is a public function. */
1597 guestfs___feature_available (guestfs_h *g, const char *feature)
1599 /* If there's an error we should ignore it, so to do that we have to
1600 * temporarily replace the error handler with a null one.
1602 guestfs_error_handler_cb old_error_cb = g->error_cb;
1605 const char *groups[] = { feature, NULL };
1606 int r = guestfs_available (g, (char * const *) groups);
1608 g->error_cb = old_error_cb;
1610 return r == 0 ? 1 : 0;
1615 /* Match a regular expression which contains no captures. Returns
1616 * true if it matches or false if it doesn't.
1619 guestfs___match (guestfs_h *g, const char *str, const pcre *re)
1621 size_t len = strlen (str);
1624 r = pcre_exec (re, NULL, str, len, 0, 0, vec, sizeof vec / sizeof vec[0]);
1625 if (r == PCRE_ERROR_NOMATCH)
1628 /* Internal error -- should not happen. */
1629 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1630 __FILE__, __func__, r, str);
1637 /* Match a regular expression which contains exactly one capture. If
1638 * the string matches, return the capture, otherwise return NULL. The
1639 * caller must free the result.
1642 guestfs___match1 (guestfs_h *g, const char *str, const pcre *re)
1644 size_t len = strlen (str);
1647 r = pcre_exec (re, NULL, str, len, 0, 0, vec, sizeof vec / sizeof vec[0]);
1648 if (r == PCRE_ERROR_NOMATCH)
1651 /* Internal error -- should not happen. */
1652 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1653 __FILE__, __func__, r, str);
1657 return safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
1660 /* Match a regular expression which contains exactly two captures. */
1662 guestfs___match2 (guestfs_h *g, const char *str, const pcre *re,
1663 char **ret1, char **ret2)
1665 size_t len = strlen (str);
1668 r = pcre_exec (re, NULL, str, len, 0, 0, vec, 30);
1669 if (r == PCRE_ERROR_NOMATCH)
1672 /* Internal error -- should not happen. */
1673 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1674 __FILE__, __func__, r, str);
1678 *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
1679 *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]);
1684 /* Match a regular expression which contains exactly three captures. */
1686 guestfs___match3 (guestfs_h *g, const char *str, const pcre *re,
1687 char **ret1, char **ret2, char **ret3)
1689 size_t len = strlen (str);
1692 r = pcre_exec (re, NULL, str, len, 0, 0, vec, 30);
1693 if (r == PCRE_ERROR_NOMATCH)
1696 /* Internal error -- should not happen. */
1697 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1698 __FILE__, __func__, r, str);
1702 *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
1703 *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]);
1704 *ret3 = safe_strndup (g, &str[vec[6]], vec[7]-vec[6]);
1709 #endif /* HAVE_PCRE */