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_windows_version;
62 static void compile_regexps (void) __attribute__((constructor));
63 static void free_regexps (void) __attribute__((destructor));
66 compile_regexps (void)
71 #define COMPILE(re,pattern,options) \
73 re = pcre_compile ((pattern), (options), &err, &offset, NULL); \
75 ignore_value (write (2, err, strlen (err))); \
80 COMPILE (re_fedora, "Fedora release (\\d+)", 0);
82 "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+).*Update (\\d+)", 0);
84 "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+)\\.(\\d+)", 0);
85 COMPILE (re_rhel_no_minor,
86 "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+)", 0);
87 COMPILE (re_major_minor, "(\\d+)\\.(\\d+)", 0);
88 COMPILE (re_aug_seq, "/\\d+$", 0);
89 COMPILE (re_xdev, "^/dev/(?:h|s|v|xv)d([a-z]\\d*)$", 0);
90 COMPILE (re_windows_version, "^(\\d+)\\.(\\d+)", 0);
96 pcre_free (re_fedora);
97 pcre_free (re_rhel_old);
99 pcre_free (re_rhel_no_minor);
100 pcre_free (re_major_minor);
101 pcre_free (re_aug_seq);
103 pcre_free (re_windows_version);
106 /* The main inspection code. */
107 static int check_for_filesystem_on (guestfs_h *g, const char *device);
110 guestfs__inspect_os (guestfs_h *g)
112 /* Remove any information previously stored in the handle. */
113 guestfs___free_inspect_info (g);
115 if (guestfs_umount_all (g) == -1)
118 /* Iterate over all possible devices. Try to mount each
119 * (read-only). Examine ones which contain filesystems and add that
120 * information to the handle.
122 /* Look to see if any devices directly contain filesystems (RHBZ#590167). */
124 devices = guestfs_list_devices (g);
129 for (i = 0; devices[i] != NULL; ++i) {
130 if (check_for_filesystem_on (g, devices[i]) == -1) {
131 guestfs___free_string_list (devices);
132 guestfs___free_inspect_info (g);
136 guestfs___free_string_list (devices);
138 /* Look at all partitions. */
140 partitions = guestfs_list_partitions (g);
141 if (partitions == NULL) {
142 guestfs___free_inspect_info (g);
146 for (i = 0; partitions[i] != NULL; ++i) {
147 if (check_for_filesystem_on (g, partitions[i]) == -1) {
148 guestfs___free_string_list (partitions);
149 guestfs___free_inspect_info (g);
153 guestfs___free_string_list (partitions);
155 /* Look at all LVs. */
156 if (guestfs___feature_available (g, "lvm2")) {
158 lvs = guestfs_lvs (g);
160 guestfs___free_inspect_info (g);
164 for (i = 0; lvs[i] != NULL; ++i) {
165 if (check_for_filesystem_on (g, lvs[i]) == -1) {
166 guestfs___free_string_list (lvs);
167 guestfs___free_inspect_info (g);
171 guestfs___free_string_list (lvs);
174 /* At this point we have, in the handle, a list of all filesystems
175 * found and data about each one. Now we assemble the list of
176 * filesystems which are root devices and return that to the user.
177 * Fall through to guestfs__inspect_get_roots to do that.
179 char **ret = guestfs__inspect_get_roots (g);
181 guestfs___free_inspect_info (g);
185 /* Find out if 'device' contains a filesystem. If it does, add
186 * another entry in g->fses.
188 static int check_filesystem (guestfs_h *g, const char *device);
189 static int check_linux_root (guestfs_h *g, struct inspect_fs *fs);
190 static int check_fstab (guestfs_h *g, struct inspect_fs *fs);
191 static int check_windows_root (guestfs_h *g, struct inspect_fs *fs);
192 static int check_windows_arch (guestfs_h *g, struct inspect_fs *fs);
193 static int check_windows_registry (guestfs_h *g, struct inspect_fs *fs);
194 static char *resolve_windows_path_silently (guestfs_h *g, const char *);
195 static int extend_fses (guestfs_h *g);
196 static int parse_unsigned_int (guestfs_h *g, const char *str);
197 static int add_fstab_entry (guestfs_h *g, struct inspect_fs *fs,
198 const char *spec, const char *mp);
199 static char *resolve_fstab_device (guestfs_h *g, const char *spec);
202 check_for_filesystem_on (guestfs_h *g, const char *device)
204 /* Get vfs-type in order to check if it's a Linux(?) swap device.
205 * If there's an error we should ignore it, so to do that we have to
206 * temporarily replace the error handler with a null one.
208 guestfs_error_handler_cb old_error_cb = g->error_cb;
210 char *vfs_type = guestfs_vfs_type (g, device);
211 g->error_cb = old_error_cb;
213 int is_swap = vfs_type && STREQ (vfs_type, "swap");
216 fprintf (stderr, "check_for_filesystem_on: %s (%s)\n",
217 device, vfs_type ? vfs_type : "failed to get vfs type");
221 if (extend_fses (g) == -1)
223 g->fses[g->nr_fses-1].is_swap = 1;
227 /* Try mounting the device. As above, ignore errors. */
229 int r = guestfs_mount_ro (g, device, "/");
230 if (r == -1 && vfs_type && STREQ (vfs_type, "ufs")) /* Hack for the *BSDs. */
231 r = guestfs_mount_vfs (g, "ro,ufstype=ufs2", "ufs", device, "/");
233 g->error_cb = old_error_cb;
237 /* Do the rest of the checks. */
238 r = check_filesystem (g, device);
240 /* Unmount the filesystem. */
241 if (guestfs_umount_all (g) == -1)
248 check_filesystem (guestfs_h *g, const char *device)
250 if (extend_fses (g) == -1)
253 struct inspect_fs *fs = &g->fses[g->nr_fses-1];
255 fs->device = safe_strdup (g, device);
256 fs->is_mountable = 1;
259 if (guestfs_is_file (g, "/grub/menu.lst") > 0 ||
260 guestfs_is_file (g, "/grub/grub.conf") > 0)
261 fs->content = FS_CONTENT_LINUX_BOOT;
263 else if (guestfs_is_dir (g, "/etc") > 0 &&
264 guestfs_is_dir (g, "/bin") > 0 &&
265 guestfs_is_file (g, "/etc/fstab") > 0) {
267 fs->content = FS_CONTENT_LINUX_ROOT;
268 if (check_linux_root (g, fs) == -1)
271 /* Linux /usr/local? */
272 else if (guestfs_is_dir (g, "/etc") > 0 &&
273 guestfs_is_dir (g, "/bin") > 0 &&
274 guestfs_is_dir (g, "/share") > 0 &&
275 guestfs_exists (g, "/local") == 0 &&
276 guestfs_is_file (g, "/etc/fstab") == 0)
277 fs->content = FS_CONTENT_LINUX_USR_LOCAL;
279 else if (guestfs_is_dir (g, "/etc") > 0 &&
280 guestfs_is_dir (g, "/bin") > 0 &&
281 guestfs_is_dir (g, "/share") > 0 &&
282 guestfs_exists (g, "/local") > 0 &&
283 guestfs_is_file (g, "/etc/fstab") == 0)
284 fs->content = FS_CONTENT_LINUX_USR;
286 else if (guestfs_is_dir (g, "/log") > 0 &&
287 guestfs_is_dir (g, "/run") > 0 &&
288 guestfs_is_dir (g, "/spool") > 0)
289 fs->content = FS_CONTENT_LINUX_VAR;
291 else if (guestfs_is_file (g, "/AUTOEXEC.BAT") > 0 ||
292 guestfs_is_file (g, "/autoexec.bat") > 0 ||
293 guestfs_is_dir (g, "/Program Files") > 0 ||
294 guestfs_is_dir (g, "/WINDOWS") > 0 ||
295 guestfs_is_dir (g, "/Windows") > 0 ||
296 guestfs_is_dir (g, "/windows") > 0 ||
297 guestfs_is_dir (g, "/WIN32") > 0 ||
298 guestfs_is_dir (g, "/Win32") > 0 ||
299 guestfs_is_dir (g, "/WINNT") > 0 ||
300 guestfs_is_file (g, "/boot.ini") > 0 ||
301 guestfs_is_file (g, "/ntldr") > 0) {
303 fs->content = FS_CONTENT_WINDOWS_ROOT;
304 if (check_windows_root (g, fs) == -1)
311 /* Set fs->product_name to the first line of the release file. */
313 parse_release_file (guestfs_h *g, struct inspect_fs *fs,
314 const char *release_filename)
316 char **product_name = guestfs_head_n (g, 1, release_filename);
317 if (product_name == NULL)
319 if (product_name[0] == NULL) {
320 error (g, "%s: file is empty", release_filename);
321 guestfs___free_string_list (product_name);
325 /* Note that this string becomes owned by the handle and will
326 * be freed by guestfs___free_inspect_info.
328 fs->product_name = product_name[0];
334 /* Parse generic MAJOR.MINOR from the fs->product_name string. */
336 parse_major_minor (guestfs_h *g, struct inspect_fs *fs)
340 if (match2 (g, fs->product_name, re_major_minor, &major, &minor)) {
341 fs->major_version = parse_unsigned_int (g, major);
343 if (fs->major_version == -1) {
347 fs->minor_version = parse_unsigned_int (g, minor);
349 if (fs->minor_version == -1)
355 /* Ubuntu has /etc/lsb-release containing:
356 * DISTRIB_ID=Ubuntu # Distro
357 * DISTRIB_RELEASE=10.04 # Version
358 * DISTRIB_CODENAME=lucid
359 * DISTRIB_DESCRIPTION="Ubuntu 10.04.1 LTS" # Product name
360 * In theory other distros could have this LSB file, but none do.
363 parse_lsb_release (guestfs_h *g, struct inspect_fs *fs)
369 lines = guestfs_head_n (g, 10, "/etc/lsb-release");
373 for (i = 0; lines[i] != NULL; ++i) {
374 if (fs->distro == 0 &&
375 STREQ (lines[i], "DISTRIB_ID=Ubuntu")) {
376 fs->distro = OS_DISTRO_UBUNTU;
379 else if (STRPREFIX (lines[i], "DISTRIB_RELEASE=")) {
381 if (match2 (g, &lines[i][16], re_major_minor, &major, &minor)) {
382 fs->major_version = parse_unsigned_int (g, major);
384 if (fs->major_version == -1) {
386 guestfs___free_string_list (lines);
389 fs->minor_version = parse_unsigned_int (g, minor);
391 if (fs->minor_version == -1) {
392 guestfs___free_string_list (lines);
397 else if (fs->product_name == NULL &&
398 (STRPREFIX (lines[i], "DISTRIB_DESCRIPTION=\"") ||
399 STRPREFIX (lines[i], "DISTRIB_DESCRIPTION='"))) {
400 size_t len = strlen (lines[i]) - 21 - 1;
401 fs->product_name = safe_strndup (g, &lines[i][21], len);
404 else if (fs->product_name == NULL &&
405 STRPREFIX (lines[i], "DISTRIB_DESCRIPTION=")) {
406 size_t len = strlen (lines[i]) - 20;
407 fs->product_name = safe_strndup (g, &lines[i][20], len);
412 guestfs___free_string_list (lines);
416 /* The currently mounted device is known to be a Linux root. Try to
417 * determine from this the distro, version, etc. Also parse
418 * /etc/fstab to determine the arrangement of mountpoints and
419 * associated devices.
422 check_linux_root (guestfs_h *g, struct inspect_fs *fs)
426 fs->type = OS_TYPE_LINUX;
428 if (guestfs_exists (g, "/etc/lsb-release") > 0) {
429 r = parse_lsb_release (g, fs);
430 if (r == -1) /* error */
432 if (r == 1) /* ok - detected the release from this file */
433 goto skip_release_checks;
436 if (guestfs_exists (g, "/etc/redhat-release") > 0) {
437 fs->distro = OS_DISTRO_REDHAT_BASED; /* Something generic Red Hat-like. */
439 if (parse_release_file (g, fs, "/etc/redhat-release") == -1)
443 if ((major = match1 (g, fs->product_name, re_fedora)) != NULL) {
444 fs->distro = OS_DISTRO_FEDORA;
445 fs->major_version = parse_unsigned_int (g, major);
447 if (fs->major_version == -1)
450 else if (match2 (g, fs->product_name, re_rhel_old, &major, &minor) ||
451 match2 (g, fs->product_name, re_rhel, &major, &minor)) {
452 fs->distro = OS_DISTRO_RHEL;
453 fs->major_version = parse_unsigned_int (g, major);
455 if (fs->major_version == -1) {
459 fs->minor_version = parse_unsigned_int (g, minor);
461 if (fs->minor_version == -1)
464 else if ((major = match1 (g, fs->product_name, re_rhel_no_minor)) != NULL) {
465 fs->distro = OS_DISTRO_RHEL;
466 fs->major_version = parse_unsigned_int (g, major);
468 if (fs->major_version == -1)
470 fs->minor_version = 0;
473 else if (guestfs_exists (g, "/etc/debian_version") > 0) {
474 fs->distro = OS_DISTRO_DEBIAN;
476 if (parse_release_file (g, fs, "/etc/debian_version") == -1)
479 if (parse_major_minor (g, fs) == -1)
482 else if (guestfs_exists (g, "/etc/pardus-release") > 0) {
483 fs->distro = OS_DISTRO_PARDUS;
485 if (parse_release_file (g, fs, "/etc/pardus-release") == -1)
488 if (parse_major_minor (g, fs) == -1)
491 else if (guestfs_exists (g, "/etc/arch-release") > 0) {
492 fs->distro = OS_DISTRO_ARCHLINUX;
494 /* /etc/arch-release file is empty and I can't see a way to
495 * determine the actual release or product string.
498 else if (guestfs_exists (g, "/etc/gentoo-release") > 0) {
499 fs->distro = OS_DISTRO_GENTOO;
501 if (parse_release_file (g, fs, "/etc/gentoo-release") == -1)
504 if (parse_major_minor (g, fs) == -1)
507 else if (guestfs_exists (g, "/etc/meego-release") > 0) {
508 fs->distro = OS_DISTRO_MEEGO;
510 if (parse_release_file (g, fs, "/etc/meego-release") == -1)
513 if (parse_major_minor (g, fs) == -1)
517 skip_release_checks:;
519 /* Determine the architecture. */
520 const char *binaries[] =
521 { "/bin/bash", "/bin/ls", "/bin/echo", "/bin/rm", "/bin/sh" };
523 for (i = 0; i < sizeof binaries / sizeof binaries[0]; ++i) {
524 if (guestfs_is_file (g, binaries[i]) > 0) {
525 /* Ignore errors from file_architecture call. */
526 guestfs_error_handler_cb old_error_cb = g->error_cb;
528 char *arch = guestfs_file_architecture (g, binaries[i]);
529 g->error_cb = old_error_cb;
532 /* String will be owned by handle, freed by
533 * guestfs___free_inspect_info.
541 /* We already know /etc/fstab exists because it's part of the test
542 * for Linux root above. We must now parse this file to determine
543 * which filesystems are used by the operating system and how they
545 * XXX What if !feature_available (g, "augeas")?
547 if (guestfs_aug_init (g, "/", 16|32) == -1)
550 /* Tell Augeas to only load /etc/fstab (thanks Raphaël Pinson). */
551 guestfs_aug_rm (g, "/augeas/load//incl[. != \"/etc/fstab\"]");
552 guestfs_aug_load (g);
554 r = check_fstab (g, fs);
555 guestfs_aug_close (g);
563 check_fstab (guestfs_h *g, struct inspect_fs *fs)
565 char **lines = guestfs_aug_ls (g, "/files/etc/fstab");
569 if (lines[0] == NULL) {
570 error (g, "could not parse /etc/fstab or empty file");
571 guestfs___free_string_list (lines);
577 for (i = 0; lines[i] != NULL; ++i) {
578 /* Ignore comments. Only care about sequence lines which
581 if (match (g, lines[i], re_aug_seq)) {
582 snprintf (augpath, sizeof augpath, "%s/spec", lines[i]);
583 char *spec = guestfs_aug_get (g, augpath);
585 guestfs___free_string_list (lines);
589 snprintf (augpath, sizeof augpath, "%s/file", lines[i]);
590 char *mp = guestfs_aug_get (g, augpath);
592 guestfs___free_string_list (lines);
597 int r = add_fstab_entry (g, fs, spec, mp);
602 guestfs___free_string_list (lines);
608 guestfs___free_string_list (lines);
612 /* Add a filesystem and possibly a mountpoint entry for
613 * the root filesystem 'fs'.
615 * 'spec' is the fstab spec field, which might be a device name or a
616 * pseudodevice or 'UUID=...' or 'LABEL=...'.
618 * 'mp' is the mount point, which could also be 'swap' or 'none'.
621 add_fstab_entry (guestfs_h *g, struct inspect_fs *fs,
622 const char *spec, const char *mp)
624 /* Ignore certain mountpoints. */
625 if (STRPREFIX (mp, "/dev/") ||
626 STREQ (mp, "/dev") ||
627 STRPREFIX (mp, "/media/") ||
628 STRPREFIX (mp, "/proc/") ||
629 STREQ (mp, "/proc") ||
630 STRPREFIX (mp, "/selinux/") ||
631 STREQ (mp, "/selinux") ||
632 STRPREFIX (mp, "/sys/") ||
636 /* Ignore /dev/fd (floppy disks) (RHBZ#642929) and CD-ROM drives. */
637 if ((STRPREFIX (spec, "/dev/fd") && c_isdigit (spec[7])) ||
638 STREQ (spec, "/dev/floppy") ||
639 STREQ (spec, "/dev/cdrom"))
642 /* Resolve UUID= and LABEL= to the actual device. */
644 if (STRPREFIX (spec, "UUID="))
645 device = guestfs_findfs_uuid (g, &spec[5]);
646 else if (STRPREFIX (spec, "LABEL="))
647 device = guestfs_findfs_label (g, &spec[6]);
648 /* Ignore "/.swap" (Pardus) and pseudo-devices like "tmpfs". */
649 else if (STRPREFIX (spec, "/dev/"))
650 /* Resolve guest block device names. */
651 device = resolve_fstab_device (g, spec);
653 /* If we haven't resolved the device successfully by this point,
654 * we don't care, just ignore it.
659 char *mountpoint = safe_strdup (g, mp);
661 /* Add this to the fstab entry in 'fs'.
662 * Note these are further filtered by guestfs_inspect_get_mountpoints
663 * and guestfs_inspect_get_filesystems.
665 size_t n = fs->nr_fstab + 1;
666 struct inspect_fstab_entry *p;
668 p = realloc (fs->fstab, n * sizeof (struct inspect_fstab_entry));
670 perrorf (g, "realloc");
679 /* These are owned by the handle and freed by guestfs___free_inspect_info. */
680 fs->fstab[n-1].device = device;
681 fs->fstab[n-1].mountpoint = mountpoint;
684 fprintf (stderr, "fstab: device=%s mountpoint=%s\n", device, mountpoint);
689 /* Resolve block device name to the libguestfs device name, eg.
690 * /dev/xvdb1 => /dev/vdb1; and /dev/mapper/VG-LV => /dev/VG/LV. This
691 * assumes that disks were added in the same order as they appear to
692 * the real VM, which is a reasonable assumption to make. Return
693 * anything we don't recognize unchanged.
696 resolve_fstab_device (guestfs_h *g, const char *spec)
701 if (STRPREFIX (spec, "/dev/mapper/")) {
702 /* LVM2 does some strange munging on /dev/mapper paths for VGs and
703 * LVs which contain '-' character:
705 * ><fs> lvcreate LV--test VG--test 32
706 * ><fs> debug ls /dev/mapper
707 * VG----test-LV----test
709 * This makes it impossible to reverse those paths directly, so
710 * we have implemented lvm_canonical_lv_name in the daemon.
712 device = guestfs_lvm_canonical_lv_name (g, spec);
714 else if ((a1 = match1 (g, spec, re_xdev)) != NULL) {
715 char **devices = guestfs_list_devices (g);
720 for (count = 0; devices[count] != NULL; count++)
723 size_t i = a1[0] - 'a'; /* a1[0] is always [a-z] because of regex. */
725 size_t len = strlen (devices[i]) + strlen (a1) + 16;
726 device = safe_malloc (g, len);
727 snprintf (device, len, "%s%s", devices[i], &a1[1]);
731 guestfs___free_string_list (devices);
734 /* Didn't match device pattern, return original spec unchanged. */
735 device = safe_strdup (g, spec);
741 /* XXX Handling of boot.ini in the Perl version was pretty broken. It
742 * essentially didn't do anything for modern Windows guests.
743 * Therefore I've omitted all that code.
746 check_windows_root (guestfs_h *g, struct inspect_fs *fs)
748 fs->type = OS_TYPE_WINDOWS;
749 fs->distro = OS_DISTRO_WINDOWS;
751 /* Try to find Windows systemroot using some common locations. */
752 const char *systemroots[] =
753 { "/windows", "/winnt", "/win32", "/win" };
755 char *systemroot = NULL;
757 systemroot == NULL && i < sizeof systemroots / sizeof systemroots[0];
759 systemroot = resolve_windows_path_silently (g, systemroots[i]);
763 error (g, _("cannot resolve Windows %%SYSTEMROOT%%"));
768 fprintf (stderr, "windows %%SYSTEMROOT%% = %s", systemroot);
770 /* Freed by guestfs___free_inspect_info. */
771 fs->windows_systemroot = systemroot;
773 if (check_windows_arch (g, fs) == -1)
776 if (check_windows_registry (g, fs) == -1)
783 check_windows_arch (guestfs_h *g, struct inspect_fs *fs)
785 size_t len = strlen (fs->windows_systemroot) + 32;
787 snprintf (cmd_exe, len, "%s/system32/cmd.exe", fs->windows_systemroot);
789 char *cmd_exe_path = resolve_windows_path_silently (g, cmd_exe);
793 char *arch = guestfs_file_architecture (g, cmd_exe_path);
797 fs->arch = arch; /* freed by guestfs___free_inspect_info */
802 /* At the moment, pull just the ProductName and version numbers from
803 * the registry. In future there is a case for making many more
804 * registry fields available to callers.
807 check_windows_registry (guestfs_h *g, struct inspect_fs *fs)
809 TMP_TEMPLATE_ON_STACK (dir);
810 #define dir_len (strlen (dir))
811 #define software_hive_len (dir_len + 16)
812 char software_hive[software_hive_len];
813 #define cmd_len (dir_len + 16)
816 size_t len = strlen (fs->windows_systemroot) + 64;
818 snprintf (software, len, "%s/system32/config/software",
819 fs->windows_systemroot);
821 char *software_path = resolve_windows_path_silently (g, software);
823 /* If the software hive doesn't exist, just accept that we cannot
824 * find product_name etc.
830 hive_value_h *values = NULL;
832 if (mkdtemp (dir) == NULL) {
833 perrorf (g, "mkdtemp");
837 snprintf (software_hive, software_hive_len, "%s/software", dir);
839 if (guestfs_download (g, software_path, software_hive) == -1)
842 h = hivex_open (software_hive, g->verbose ? HIVEX_OPEN_VERBOSE : 0);
844 perrorf (g, "hivex_open");
848 hive_node_h node = hivex_root (h);
849 const char *hivepath[] =
850 { "Microsoft", "Windows NT", "CurrentVersion" };
853 node != 0 && i < sizeof hivepath / sizeof hivepath[0];
855 node = hivex_node_get_child (h, node, hivepath[i]);
859 perrorf (g, "hivex: cannot locate HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion");
863 values = hivex_node_values (h, node);
865 for (i = 0; values[i] != 0; ++i) {
866 char *key = hivex_value_key (h, values[i]);
868 perrorf (g, "hivex_value_key");
872 if (STRCASEEQ (key, "ProductName")) {
873 fs->product_name = hivex_value_string (h, values[i]);
874 if (!fs->product_name) {
875 perrorf (g, "hivex_value_string");
880 else if (STRCASEEQ (key, "CurrentVersion")) {
881 char *version = hivex_value_string (h, values[i]);
883 perrorf (g, "hivex_value_string");
888 if (match2 (g, version, re_windows_version, &major, &minor)) {
889 fs->major_version = parse_unsigned_int (g, major);
891 if (fs->major_version == -1) {
897 fs->minor_version = parse_unsigned_int (g, minor);
899 if (fs->minor_version == -1) {
915 if (h) hivex_close (h);
917 free (software_path);
919 /* Free up the temporary directory. Note the directory name cannot
920 * contain shell meta-characters because of the way it was
923 snprintf (cmd, cmd_len, "rm -rf %s", dir);
924 ignore_value (system (cmd));
926 #undef software_hive_len
933 resolve_windows_path_silently (guestfs_h *g, const char *path)
935 guestfs_error_handler_cb old_error_cb = g->error_cb;
937 char *ret = guestfs_case_sensitive_path (g, path);
938 g->error_cb = old_error_cb;
943 extend_fses (guestfs_h *g)
945 size_t n = g->nr_fses + 1;
946 struct inspect_fs *p;
948 p = realloc (g->fses, n * sizeof (struct inspect_fs));
950 perrorf (g, "realloc");
957 memset (&g->fses[n-1], 0, sizeof (struct inspect_fs));
962 /* Parse small, unsigned ints, as used in version numbers. */
964 parse_unsigned_int (guestfs_h *g, const char *str)
967 int r = xstrtol (str, NULL, 10, &ret, "");
968 if (r != LONGINT_OK) {
969 error (g, "could not parse integer in version number: %s", str);
975 static struct inspect_fs *
976 search_for_root (guestfs_h *g, const char *root)
978 if (g->nr_fses == 0) {
979 error (g, _("no inspection data: call guestfs_inspect_os first"));
984 struct inspect_fs *fs;
985 for (i = 0; i < g->nr_fses; ++i) {
987 if (fs->is_root && STREQ (root, fs->device))
991 error (g, _("%s: root device not found: only call this function with a root device previously returned by guestfs_inspect_os"),
997 guestfs__inspect_get_roots (guestfs_h *g)
999 /* NB. Doesn't matter if g->nr_fses == 0. We just return an empty
1000 * list in this case.
1005 for (i = 0; i < g->nr_fses; ++i)
1006 if (g->fses[i].is_root)
1009 char **ret = calloc (count+1, sizeof (char *));
1011 perrorf (g, "calloc");
1016 for (i = 0; i < g->nr_fses; ++i) {
1017 if (g->fses[i].is_root) {
1018 ret[count] = safe_strdup (g, g->fses[i].device);
1028 guestfs__inspect_get_type (guestfs_h *g, const char *root)
1030 struct inspect_fs *fs = search_for_root (g, root);
1036 case OS_TYPE_LINUX: ret = safe_strdup (g, "linux"); break;
1037 case OS_TYPE_WINDOWS: ret = safe_strdup (g, "windows"); break;
1038 case OS_TYPE_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
1045 guestfs__inspect_get_arch (guestfs_h *g, const char *root)
1047 struct inspect_fs *fs = search_for_root (g, root);
1051 return safe_strdup (g, fs->arch ? : "unknown");
1055 guestfs__inspect_get_distro (guestfs_h *g, const char *root)
1057 struct inspect_fs *fs = search_for_root (g, root);
1062 switch (fs->distro) {
1063 case OS_DISTRO_ARCHLINUX: ret = safe_strdup (g, "archlinux"); break;
1064 case OS_DISTRO_DEBIAN: ret = safe_strdup (g, "debian"); break;
1065 case OS_DISTRO_FEDORA: ret = safe_strdup (g, "fedora"); break;
1066 case OS_DISTRO_GENTOO: ret = safe_strdup (g, "gentoo"); break;
1067 case OS_DISTRO_MEEGO: ret = safe_strdup (g, "meego"); break;
1068 case OS_DISTRO_PARDUS: ret = safe_strdup (g, "pardus"); break;
1069 case OS_DISTRO_REDHAT_BASED: ret = safe_strdup (g, "redhat-based"); break;
1070 case OS_DISTRO_RHEL: ret = safe_strdup (g, "rhel"); break;
1071 case OS_DISTRO_WINDOWS: ret = safe_strdup (g, "windows"); break;
1072 case OS_DISTRO_UBUNTU: ret = safe_strdup (g, "ubuntu"); break;
1073 case OS_DISTRO_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
1080 guestfs__inspect_get_major_version (guestfs_h *g, const char *root)
1082 struct inspect_fs *fs = search_for_root (g, root);
1086 return fs->major_version;
1090 guestfs__inspect_get_minor_version (guestfs_h *g, const char *root)
1092 struct inspect_fs *fs = search_for_root (g, root);
1096 return fs->minor_version;
1100 guestfs__inspect_get_product_name (guestfs_h *g, const char *root)
1102 struct inspect_fs *fs = search_for_root (g, root);
1106 return safe_strdup (g, fs->product_name ? : "unknown");
1110 guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root)
1112 struct inspect_fs *fs = search_for_root (g, root);
1116 if (!fs->windows_systemroot) {
1117 error (g, _("not a Windows guest, or systemroot could not be determined"));
1121 return safe_strdup (g, fs->windows_systemroot);
1125 guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root)
1127 struct inspect_fs *fs = search_for_root (g, root);
1133 /* If no fstab information (Windows) return just the root. */
1134 if (fs->nr_fstab == 0) {
1135 ret = calloc (3, sizeof (char *));
1136 ret[0] = safe_strdup (g, "/");
1137 ret[1] = safe_strdup (g, root);
1142 #define CRITERION fs->fstab[i].mountpoint[0] == '/'
1143 size_t i, count = 0;
1144 for (i = 0; i < fs->nr_fstab; ++i)
1148 /* Hashtables have 2N+1 entries. */
1149 ret = calloc (2*count+1, sizeof (char *));
1151 perrorf (g, "calloc");
1156 for (i = 0; i < fs->nr_fstab; ++i)
1158 ret[2*count] = safe_strdup (g, fs->fstab[i].mountpoint);
1159 ret[2*count+1] = safe_strdup (g, fs->fstab[i].device);
1168 guestfs__inspect_get_filesystems (guestfs_h *g, const char *root)
1170 struct inspect_fs *fs = search_for_root (g, root);
1176 /* If no fstab information (Windows) return just the root. */
1177 if (fs->nr_fstab == 0) {
1178 ret = calloc (2, sizeof (char *));
1179 ret[0] = safe_strdup (g, root);
1184 ret = calloc (fs->nr_fstab + 1, sizeof (char *));
1186 perrorf (g, "calloc");
1191 for (i = 0; i < fs->nr_fstab; ++i)
1192 ret[i] = safe_strdup (g, fs->fstab[i].device);
1197 #else /* no PCRE or hivex at compile time */
1199 /* XXX These functions should be in an optgroup. */
1201 #define NOT_IMPL(r) \
1202 error (g, _("inspection API not available since this version of libguestfs was compiled without PCRE or hivex libraries")); \
1206 guestfs__inspect_os (guestfs_h *g)
1212 guestfs__inspect_get_roots (guestfs_h *g)
1218 guestfs__inspect_get_type (guestfs_h *g, const char *root)
1224 guestfs__inspect_get_arch (guestfs_h *g, const char *root)
1230 guestfs__inspect_get_distro (guestfs_h *g, const char *root)
1236 guestfs__inspect_get_major_version (guestfs_h *g, const char *root)
1242 guestfs__inspect_get_minor_version (guestfs_h *g, const char *root)
1248 guestfs__inspect_get_product_name (guestfs_h *g, const char *root)
1254 guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root)
1260 guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root)
1266 guestfs__inspect_get_filesystems (guestfs_h *g, const char *root)
1271 #endif /* no PCRE or hivex at compile time */
1274 guestfs___free_inspect_info (guestfs_h *g)
1277 for (i = 0; i < g->nr_fses; ++i) {
1278 free (g->fses[i].device);
1279 free (g->fses[i].product_name);
1280 free (g->fses[i].arch);
1281 free (g->fses[i].windows_systemroot);
1283 for (j = 0; j < g->fses[i].nr_fstab; ++j) {
1284 free (g->fses[i].fstab[j].device);
1285 free (g->fses[i].fstab[j].mountpoint);
1287 free (g->fses[i].fstab);
1294 /* In the Perl code this is a public function. */
1296 guestfs___feature_available (guestfs_h *g, const char *feature)
1298 /* If there's an error we should ignore it, so to do that we have to
1299 * temporarily replace the error handler with a null one.
1301 guestfs_error_handler_cb old_error_cb = g->error_cb;
1304 const char *groups[] = { feature, NULL };
1305 int r = guestfs_available (g, (char * const *) groups);
1307 g->error_cb = old_error_cb;
1309 return r == 0 ? 1 : 0;
1314 /* Match a regular expression which contains no captures. Returns
1315 * true if it matches or false if it doesn't.
1318 guestfs___match (guestfs_h *g, const char *str, const pcre *re)
1320 size_t len = strlen (str);
1323 r = pcre_exec (re, NULL, str, len, 0, 0, vec, sizeof vec / sizeof vec[0]);
1324 if (r == PCRE_ERROR_NOMATCH)
1327 /* Internal error -- should not happen. */
1328 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1329 __FILE__, __func__, r, str);
1336 /* Match a regular expression which contains exactly one capture. If
1337 * the string matches, return the capture, otherwise return NULL. The
1338 * caller must free the result.
1341 guestfs___match1 (guestfs_h *g, const char *str, const pcre *re)
1343 size_t len = strlen (str);
1346 r = pcre_exec (re, NULL, str, len, 0, 0, vec, sizeof vec / sizeof vec[0]);
1347 if (r == PCRE_ERROR_NOMATCH)
1350 /* Internal error -- should not happen. */
1351 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1352 __FILE__, __func__, r, str);
1356 return safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
1359 /* Match a regular expression which contains exactly two captures. */
1361 guestfs___match2 (guestfs_h *g, const char *str, const pcre *re,
1362 char **ret1, char **ret2)
1364 size_t len = strlen (str);
1367 r = pcre_exec (re, NULL, str, len, 0, 0, vec, 30);
1368 if (r == PCRE_ERROR_NOMATCH)
1371 /* Internal error -- should not happen. */
1372 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1373 __FILE__, __func__, r, str);
1377 *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
1378 *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]);
1383 #endif /* HAVE_PCRE */