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.
179 for (i = 0; i < g->nr_fses; ++i)
180 if (g->fses[i].is_root)
183 char **ret = calloc (count+1, sizeof (char *));
185 perrorf (g, "calloc");
186 guestfs___free_inspect_info (g);
191 for (i = 0; i < g->nr_fses; ++i) {
192 if (g->fses[i].is_root) {
193 ret[count] = safe_strdup (g, g->fses[i].device);
202 /* Find out if 'device' contains a filesystem. If it does, add
203 * another entry in g->fses.
205 static int check_filesystem (guestfs_h *g, const char *device);
206 static int check_linux_root (guestfs_h *g, struct inspect_fs *fs);
207 static void check_architecture (guestfs_h *g, struct inspect_fs *fs);
208 static int check_fstab (guestfs_h *g, struct inspect_fs *fs);
209 static int check_windows_root (guestfs_h *g, struct inspect_fs *fs);
210 static int check_windows_arch (guestfs_h *g, struct inspect_fs *fs);
211 static int check_windows_registry (guestfs_h *g, struct inspect_fs *fs);
212 static char *resolve_windows_path_silently (guestfs_h *g, const char *);
213 static int extend_fses (guestfs_h *g);
214 static int parse_unsigned_int (guestfs_h *g, const char *str);
215 static int add_fstab_entry (guestfs_h *g, struct inspect_fs *fs,
216 const char *spec, const char *mp);
217 static char *resolve_fstab_device (guestfs_h *g, const char *spec);
220 check_for_filesystem_on (guestfs_h *g, const char *device)
222 /* Get vfs-type in order to check if it's a Linux(?) swap device.
223 * If there's an error we should ignore it, so to do that we have to
224 * temporarily replace the error handler with a null one.
226 guestfs_error_handler_cb old_error_cb = g->error_cb;
228 char *vfs_type = guestfs_vfs_type (g, device);
229 g->error_cb = old_error_cb;
231 int is_swap = vfs_type && STREQ (vfs_type, "swap");
234 fprintf (stderr, "check_for_filesystem_on: %s (%s)\n",
235 device, vfs_type ? vfs_type : "failed to get vfs type");
239 if (extend_fses (g) == -1)
241 g->fses[g->nr_fses-1].is_swap = 1;
245 /* Try mounting the device. As above, ignore errors. */
247 int r = guestfs_mount_ro (g, device, "/");
248 if (r == -1 && vfs_type && STREQ (vfs_type, "ufs")) /* Hack for the *BSDs. */
249 r = guestfs_mount_vfs (g, "ro,ufstype=ufs2", "ufs", device, "/");
251 g->error_cb = old_error_cb;
255 /* Do the rest of the checks. */
256 r = check_filesystem (g, device);
258 /* Unmount the filesystem. */
259 if (guestfs_umount_all (g) == -1)
266 check_filesystem (guestfs_h *g, const char *device)
268 if (extend_fses (g) == -1)
271 struct inspect_fs *fs = &g->fses[g->nr_fses-1];
273 fs->device = safe_strdup (g, device);
274 fs->is_mountable = 1;
277 if (guestfs_is_file (g, "/grub/menu.lst") > 0 ||
278 guestfs_is_file (g, "/grub/grub.conf") > 0)
279 fs->content = FS_CONTENT_LINUX_BOOT;
281 else if (guestfs_is_dir (g, "/etc") > 0 &&
282 guestfs_is_dir (g, "/bin") > 0 &&
283 guestfs_is_file (g, "/etc/fstab") > 0) {
285 fs->content = FS_CONTENT_LINUX_ROOT;
286 if (check_linux_root (g, fs) == -1)
289 /* Linux /usr/local? */
290 else if (guestfs_is_dir (g, "/etc") > 0 &&
291 guestfs_is_dir (g, "/bin") > 0 &&
292 guestfs_is_dir (g, "/share") > 0 &&
293 guestfs_exists (g, "/local") == 0 &&
294 guestfs_is_file (g, "/etc/fstab") == 0)
295 fs->content = FS_CONTENT_LINUX_USR_LOCAL;
297 else if (guestfs_is_dir (g, "/etc") > 0 &&
298 guestfs_is_dir (g, "/bin") > 0 &&
299 guestfs_is_dir (g, "/share") > 0 &&
300 guestfs_exists (g, "/local") > 0 &&
301 guestfs_is_file (g, "/etc/fstab") == 0)
302 fs->content = FS_CONTENT_LINUX_USR;
304 else if (guestfs_is_dir (g, "/log") > 0 &&
305 guestfs_is_dir (g, "/run") > 0 &&
306 guestfs_is_dir (g, "/spool") > 0)
307 fs->content = FS_CONTENT_LINUX_VAR;
309 else if (guestfs_is_file (g, "/AUTOEXEC.BAT") > 0 ||
310 guestfs_is_file (g, "/autoexec.bat") > 0 ||
311 guestfs_is_dir (g, "/Program Files") > 0 ||
312 guestfs_is_dir (g, "/WINDOWS") > 0 ||
313 guestfs_is_dir (g, "/Windows") > 0 ||
314 guestfs_is_dir (g, "/windows") > 0 ||
315 guestfs_is_dir (g, "/WIN32") > 0 ||
316 guestfs_is_dir (g, "/Win32") > 0 ||
317 guestfs_is_dir (g, "/WINNT") > 0 ||
318 guestfs_is_file (g, "/boot.ini") > 0 ||
319 guestfs_is_file (g, "/ntldr") > 0) {
321 fs->content = FS_CONTENT_WINDOWS_ROOT;
322 if (check_windows_root (g, fs) == -1)
329 /* Set fs->product_name to the first line of the release file. */
331 parse_release_file (guestfs_h *g, struct inspect_fs *fs,
332 const char *release_filename)
334 char **product_name = guestfs_head_n (g, 1, release_filename);
335 if (product_name == NULL)
337 if (product_name[0] == NULL) {
338 error (g, _("%s: file is empty"), release_filename);
339 guestfs___free_string_list (product_name);
343 /* Note that this string becomes owned by the handle and will
344 * be freed by guestfs___free_inspect_info.
346 fs->product_name = product_name[0];
352 /* Parse generic MAJOR.MINOR from the fs->product_name string. */
354 parse_major_minor (guestfs_h *g, struct inspect_fs *fs)
358 if (match2 (g, fs->product_name, re_major_minor, &major, &minor)) {
359 fs->major_version = parse_unsigned_int (g, major);
361 if (fs->major_version == -1) {
365 fs->minor_version = parse_unsigned_int (g, minor);
367 if (fs->minor_version == -1)
373 /* Ubuntu has /etc/lsb-release containing:
374 * DISTRIB_ID=Ubuntu # Distro
375 * DISTRIB_RELEASE=10.04 # Version
376 * DISTRIB_CODENAME=lucid
377 * DISTRIB_DESCRIPTION="Ubuntu 10.04.1 LTS" # Product name
378 * In theory other distros could have this LSB file, but none do.
381 parse_lsb_release (guestfs_h *g, struct inspect_fs *fs)
387 lines = guestfs_head_n (g, 10, "/etc/lsb-release");
391 for (i = 0; lines[i] != NULL; ++i) {
392 if (fs->distro == 0 &&
393 STREQ (lines[i], "DISTRIB_ID=Ubuntu")) {
394 fs->distro = OS_DISTRO_UBUNTU;
397 else if (STRPREFIX (lines[i], "DISTRIB_RELEASE=")) {
399 if (match2 (g, &lines[i][16], re_major_minor, &major, &minor)) {
400 fs->major_version = parse_unsigned_int (g, major);
402 if (fs->major_version == -1) {
404 guestfs___free_string_list (lines);
407 fs->minor_version = parse_unsigned_int (g, minor);
409 if (fs->minor_version == -1) {
410 guestfs___free_string_list (lines);
415 else if (fs->product_name == NULL &&
416 (STRPREFIX (lines[i], "DISTRIB_DESCRIPTION=\"") ||
417 STRPREFIX (lines[i], "DISTRIB_DESCRIPTION='"))) {
418 size_t len = strlen (lines[i]) - 21 - 1;
419 fs->product_name = safe_strndup (g, &lines[i][21], len);
422 else if (fs->product_name == NULL &&
423 STRPREFIX (lines[i], "DISTRIB_DESCRIPTION=")) {
424 size_t len = strlen (lines[i]) - 20;
425 fs->product_name = safe_strndup (g, &lines[i][20], len);
430 guestfs___free_string_list (lines);
434 /* The currently mounted device is known to be a Linux root. Try to
435 * determine from this the distro, version, etc. Also parse
436 * /etc/fstab to determine the arrangement of mountpoints and
437 * associated devices.
440 check_linux_root (guestfs_h *g, struct inspect_fs *fs)
444 fs->type = OS_TYPE_LINUX;
446 if (guestfs_exists (g, "/etc/lsb-release") > 0) {
447 r = parse_lsb_release (g, fs);
448 if (r == -1) /* error */
450 if (r == 1) /* ok - detected the release from this file */
451 goto skip_release_checks;
454 if (guestfs_exists (g, "/etc/redhat-release") > 0) {
455 fs->distro = OS_DISTRO_REDHAT_BASED; /* Something generic Red Hat-like. */
457 if (parse_release_file (g, fs, "/etc/redhat-release") == -1)
461 if ((major = match1 (g, fs->product_name, re_fedora)) != NULL) {
462 fs->distro = OS_DISTRO_FEDORA;
463 fs->major_version = parse_unsigned_int (g, major);
465 if (fs->major_version == -1)
468 else if (match2 (g, fs->product_name, re_rhel_old, &major, &minor) ||
469 match2 (g, fs->product_name, re_rhel, &major, &minor)) {
470 fs->distro = OS_DISTRO_RHEL;
471 fs->major_version = parse_unsigned_int (g, major);
473 if (fs->major_version == -1) {
477 fs->minor_version = parse_unsigned_int (g, minor);
479 if (fs->minor_version == -1)
482 else if ((major = match1 (g, fs->product_name, re_rhel_no_minor)) != NULL) {
483 fs->distro = OS_DISTRO_RHEL;
484 fs->major_version = parse_unsigned_int (g, major);
486 if (fs->major_version == -1)
488 fs->minor_version = 0;
491 else if (guestfs_exists (g, "/etc/debian_version") > 0) {
492 fs->distro = OS_DISTRO_DEBIAN;
494 if (parse_release_file (g, fs, "/etc/debian_version") == -1)
497 if (parse_major_minor (g, fs) == -1)
500 else if (guestfs_exists (g, "/etc/pardus-release") > 0) {
501 fs->distro = OS_DISTRO_PARDUS;
503 if (parse_release_file (g, fs, "/etc/pardus-release") == -1)
506 if (parse_major_minor (g, fs) == -1)
509 else if (guestfs_exists (g, "/etc/arch-release") > 0) {
510 fs->distro = OS_DISTRO_ARCHLINUX;
512 /* /etc/arch-release file is empty and I can't see a way to
513 * determine the actual release or product string.
516 else if (guestfs_exists (g, "/etc/gentoo-release") > 0) {
517 fs->distro = OS_DISTRO_GENTOO;
519 if (parse_release_file (g, fs, "/etc/gentoo-release") == -1)
522 if (parse_major_minor (g, fs) == -1)
525 else if (guestfs_exists (g, "/etc/meego-release") > 0) {
526 fs->distro = OS_DISTRO_MEEGO;
528 if (parse_release_file (g, fs, "/etc/meego-release") == -1)
531 if (parse_major_minor (g, fs) == -1)
535 skip_release_checks:;
537 /* Determine the architecture. */
538 check_architecture (g, fs);
540 /* We already know /etc/fstab exists because it's part of the test
541 * for Linux root above. We must now parse this file to determine
542 * which filesystems are used by the operating system and how they
545 if (check_fstab (g, fs) == -1)
552 check_architecture (guestfs_h *g, struct inspect_fs *fs)
554 const char *binaries[] =
555 { "/bin/bash", "/bin/ls", "/bin/echo", "/bin/rm", "/bin/sh" };
558 for (i = 0; i < sizeof binaries / sizeof binaries[0]; ++i) {
559 if (guestfs_is_file (g, binaries[i]) > 0) {
560 /* Ignore errors from file_architecture call. */
561 guestfs_error_handler_cb old_error_cb = g->error_cb;
563 char *arch = guestfs_file_architecture (g, binaries[i]);
564 g->error_cb = old_error_cb;
567 /* String will be owned by handle, freed by
568 * guestfs___free_inspect_info.
577 static int check_fstab_aug_open (guestfs_h *g, struct inspect_fs *fs);
580 check_fstab (guestfs_h *g, struct inspect_fs *fs)
585 /* Security: Refuse to do this if /etc/fstab is huge. */
586 size = guestfs_filesize (g, "/etc/fstab");
587 if (size == -1 || size > 100000) {
588 error (g, _("size of /etc/fstab unreasonable (%" PRIi64 " bytes)"), size);
592 /* XXX What if !feature_available (g, "augeas")? */
593 if (guestfs_aug_init (g, "/", 16|32) == -1)
596 /* Tell Augeas to only load /etc/fstab (thanks Raphaël Pinson). */
597 guestfs_aug_rm (g, "/augeas/load//incl[. != \"/etc/fstab\"]");
598 guestfs_aug_load (g);
600 r = check_fstab_aug_open (g, fs);
601 guestfs_aug_close (g);
609 check_fstab_aug_open (guestfs_h *g, struct inspect_fs *fs)
611 char **lines = guestfs_aug_ls (g, "/files/etc/fstab");
615 if (lines[0] == NULL) {
616 error (g, _("could not parse /etc/fstab or empty file"));
617 guestfs___free_string_list (lines);
623 for (i = 0; lines[i] != NULL; ++i) {
624 /* Ignore comments. Only care about sequence lines which
627 if (match (g, lines[i], re_aug_seq)) {
628 snprintf (augpath, sizeof augpath, "%s/spec", lines[i]);
629 char *spec = guestfs_aug_get (g, augpath);
631 guestfs___free_string_list (lines);
635 snprintf (augpath, sizeof augpath, "%s/file", lines[i]);
636 char *mp = guestfs_aug_get (g, augpath);
638 guestfs___free_string_list (lines);
643 int r = add_fstab_entry (g, fs, spec, mp);
648 guestfs___free_string_list (lines);
654 guestfs___free_string_list (lines);
658 /* Add a filesystem and possibly a mountpoint entry for
659 * the root filesystem 'fs'.
661 * 'spec' is the fstab spec field, which might be a device name or a
662 * pseudodevice or 'UUID=...' or 'LABEL=...'.
664 * 'mp' is the mount point, which could also be 'swap' or 'none'.
667 add_fstab_entry (guestfs_h *g, struct inspect_fs *fs,
668 const char *spec, const char *mp)
670 /* Ignore certain mountpoints. */
671 if (STRPREFIX (mp, "/dev/") ||
672 STREQ (mp, "/dev") ||
673 STRPREFIX (mp, "/media/") ||
674 STRPREFIX (mp, "/proc/") ||
675 STREQ (mp, "/proc") ||
676 STRPREFIX (mp, "/selinux/") ||
677 STREQ (mp, "/selinux") ||
678 STRPREFIX (mp, "/sys/") ||
682 /* Ignore /dev/fd (floppy disks) (RHBZ#642929) and CD-ROM drives. */
683 if ((STRPREFIX (spec, "/dev/fd") && c_isdigit (spec[7])) ||
684 STREQ (spec, "/dev/floppy") ||
685 STREQ (spec, "/dev/cdrom"))
688 /* Resolve UUID= and LABEL= to the actual device. */
690 if (STRPREFIX (spec, "UUID="))
691 device = guestfs_findfs_uuid (g, &spec[5]);
692 else if (STRPREFIX (spec, "LABEL="))
693 device = guestfs_findfs_label (g, &spec[6]);
694 /* Ignore "/.swap" (Pardus) and pseudo-devices like "tmpfs". */
695 else if (STRPREFIX (spec, "/dev/"))
696 /* Resolve guest block device names. */
697 device = resolve_fstab_device (g, spec);
699 /* If we haven't resolved the device successfully by this point,
700 * we don't care, just ignore it.
705 char *mountpoint = safe_strdup (g, mp);
707 /* Add this to the fstab entry in 'fs'.
708 * Note these are further filtered by guestfs_inspect_get_mountpoints
709 * and guestfs_inspect_get_filesystems.
711 size_t n = fs->nr_fstab + 1;
712 struct inspect_fstab_entry *p;
714 p = realloc (fs->fstab, n * sizeof (struct inspect_fstab_entry));
716 perrorf (g, "realloc");
725 /* These are owned by the handle and freed by guestfs___free_inspect_info. */
726 fs->fstab[n-1].device = device;
727 fs->fstab[n-1].mountpoint = mountpoint;
730 fprintf (stderr, "fstab: device=%s mountpoint=%s\n", device, mountpoint);
735 /* Resolve block device name to the libguestfs device name, eg.
736 * /dev/xvdb1 => /dev/vdb1; and /dev/mapper/VG-LV => /dev/VG/LV. This
737 * assumes that disks were added in the same order as they appear to
738 * the real VM, which is a reasonable assumption to make. Return
739 * anything we don't recognize unchanged.
742 resolve_fstab_device (guestfs_h *g, const char *spec)
747 if (STRPREFIX (spec, "/dev/mapper/")) {
748 /* LVM2 does some strange munging on /dev/mapper paths for VGs and
749 * LVs which contain '-' character:
751 * ><fs> lvcreate LV--test VG--test 32
752 * ><fs> debug ls /dev/mapper
753 * VG----test-LV----test
755 * This makes it impossible to reverse those paths directly, so
756 * we have implemented lvm_canonical_lv_name in the daemon.
758 device = guestfs_lvm_canonical_lv_name (g, spec);
760 else if ((a1 = match1 (g, spec, re_xdev)) != NULL) {
761 char **devices = guestfs_list_devices (g);
766 for (count = 0; devices[count] != NULL; count++)
769 size_t i = a1[0] - 'a'; /* a1[0] is always [a-z] because of regex. */
771 size_t len = strlen (devices[i]) + strlen (a1) + 16;
772 device = safe_malloc (g, len);
773 snprintf (device, len, "%s%s", devices[i], &a1[1]);
777 guestfs___free_string_list (devices);
780 /* Didn't match device pattern, return original spec unchanged. */
781 device = safe_strdup (g, spec);
787 /* XXX Handling of boot.ini in the Perl version was pretty broken. It
788 * essentially didn't do anything for modern Windows guests.
789 * Therefore I've omitted all that code.
792 check_windows_root (guestfs_h *g, struct inspect_fs *fs)
794 fs->type = OS_TYPE_WINDOWS;
795 fs->distro = OS_DISTRO_WINDOWS;
797 /* Try to find Windows systemroot using some common locations. */
798 const char *systemroots[] =
799 { "/windows", "/winnt", "/win32", "/win" };
801 char *systemroot = NULL;
803 systemroot == NULL && i < sizeof systemroots / sizeof systemroots[0];
805 systemroot = resolve_windows_path_silently (g, systemroots[i]);
809 error (g, _("cannot resolve Windows %%SYSTEMROOT%%"));
814 fprintf (stderr, "windows %%SYSTEMROOT%% = %s", systemroot);
816 /* Freed by guestfs___free_inspect_info. */
817 fs->windows_systemroot = systemroot;
819 if (check_windows_arch (g, fs) == -1)
822 if (check_windows_registry (g, fs) == -1)
829 check_windows_arch (guestfs_h *g, struct inspect_fs *fs)
831 size_t len = strlen (fs->windows_systemroot) + 32;
833 snprintf (cmd_exe, len, "%s/system32/cmd.exe", fs->windows_systemroot);
835 char *cmd_exe_path = resolve_windows_path_silently (g, cmd_exe);
839 char *arch = guestfs_file_architecture (g, cmd_exe_path);
843 fs->arch = arch; /* freed by guestfs___free_inspect_info */
848 /* At the moment, pull just the ProductName and version numbers from
849 * the registry. In future there is a case for making many more
850 * registry fields available to callers.
853 check_windows_registry (guestfs_h *g, struct inspect_fs *fs)
855 TMP_TEMPLATE_ON_STACK (dir);
856 #define dir_len (strlen (dir))
857 #define software_hive_len (dir_len + 16)
858 char software_hive[software_hive_len];
859 #define cmd_len (dir_len + 16)
862 size_t len = strlen (fs->windows_systemroot) + 64;
864 snprintf (software, len, "%s/system32/config/software",
865 fs->windows_systemroot);
867 char *software_path = resolve_windows_path_silently (g, software);
869 /* If the software hive doesn't exist, just accept that we cannot
870 * find product_name etc.
876 hive_value_h *values = NULL;
878 if (mkdtemp (dir) == NULL) {
879 perrorf (g, "mkdtemp");
883 snprintf (software_hive, software_hive_len, "%s/software", dir);
885 if (guestfs_download (g, software_path, software_hive) == -1)
888 h = hivex_open (software_hive, g->verbose ? HIVEX_OPEN_VERBOSE : 0);
890 perrorf (g, "hivex_open");
894 hive_node_h node = hivex_root (h);
895 const char *hivepath[] =
896 { "Microsoft", "Windows NT", "CurrentVersion" };
899 node != 0 && i < sizeof hivepath / sizeof hivepath[0];
901 node = hivex_node_get_child (h, node, hivepath[i]);
905 perrorf (g, "hivex: cannot locate HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion");
909 values = hivex_node_values (h, node);
911 for (i = 0; values[i] != 0; ++i) {
912 char *key = hivex_value_key (h, values[i]);
914 perrorf (g, "hivex_value_key");
918 if (STRCASEEQ (key, "ProductName")) {
919 fs->product_name = hivex_value_string (h, values[i]);
920 if (!fs->product_name) {
921 perrorf (g, "hivex_value_string");
926 else if (STRCASEEQ (key, "CurrentVersion")) {
927 char *version = hivex_value_string (h, values[i]);
929 perrorf (g, "hivex_value_string");
934 if (match2 (g, version, re_windows_version, &major, &minor)) {
935 fs->major_version = parse_unsigned_int (g, major);
937 if (fs->major_version == -1) {
943 fs->minor_version = parse_unsigned_int (g, minor);
945 if (fs->minor_version == -1) {
961 if (h) hivex_close (h);
963 free (software_path);
965 /* Free up the temporary directory. Note the directory name cannot
966 * contain shell meta-characters because of the way it was
969 snprintf (cmd, cmd_len, "rm -rf %s", dir);
970 ignore_value (system (cmd));
972 #undef software_hive_len
979 resolve_windows_path_silently (guestfs_h *g, const char *path)
981 guestfs_error_handler_cb old_error_cb = g->error_cb;
983 char *ret = guestfs_case_sensitive_path (g, path);
984 g->error_cb = old_error_cb;
989 extend_fses (guestfs_h *g)
991 size_t n = g->nr_fses + 1;
992 struct inspect_fs *p;
994 p = realloc (g->fses, n * sizeof (struct inspect_fs));
996 perrorf (g, "realloc");
1003 memset (&g->fses[n-1], 0, sizeof (struct inspect_fs));
1008 /* Parse small, unsigned ints, as used in version numbers. */
1010 parse_unsigned_int (guestfs_h *g, const char *str)
1013 int r = xstrtol (str, NULL, 10, &ret, "");
1014 if (r != LONGINT_OK) {
1015 error (g, _("could not parse integer in version number: %s"), str);
1021 static struct inspect_fs *
1022 search_for_root (guestfs_h *g, const char *root)
1024 if (g->nr_fses == 0) {
1025 error (g, _("no inspection data: call guestfs_inspect_os first"));
1030 struct inspect_fs *fs;
1031 for (i = 0; i < g->nr_fses; ++i) {
1033 if (fs->is_root && STREQ (root, fs->device))
1037 error (g, _("%s: root device not found: only call this function with a root device previously returned by guestfs_inspect_os"),
1043 guestfs__inspect_get_type (guestfs_h *g, const char *root)
1045 struct inspect_fs *fs = search_for_root (g, root);
1051 case OS_TYPE_LINUX: ret = safe_strdup (g, "linux"); break;
1052 case OS_TYPE_WINDOWS: ret = safe_strdup (g, "windows"); break;
1053 case OS_TYPE_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
1060 guestfs__inspect_get_arch (guestfs_h *g, const char *root)
1062 struct inspect_fs *fs = search_for_root (g, root);
1066 return safe_strdup (g, fs->arch ? : "unknown");
1070 guestfs__inspect_get_distro (guestfs_h *g, const char *root)
1072 struct inspect_fs *fs = search_for_root (g, root);
1077 switch (fs->distro) {
1078 case OS_DISTRO_ARCHLINUX: ret = safe_strdup (g, "archlinux"); break;
1079 case OS_DISTRO_DEBIAN: ret = safe_strdup (g, "debian"); break;
1080 case OS_DISTRO_FEDORA: ret = safe_strdup (g, "fedora"); break;
1081 case OS_DISTRO_GENTOO: ret = safe_strdup (g, "gentoo"); break;
1082 case OS_DISTRO_MEEGO: ret = safe_strdup (g, "meego"); break;
1083 case OS_DISTRO_PARDUS: ret = safe_strdup (g, "pardus"); break;
1084 case OS_DISTRO_REDHAT_BASED: ret = safe_strdup (g, "redhat-based"); break;
1085 case OS_DISTRO_RHEL: ret = safe_strdup (g, "rhel"); break;
1086 case OS_DISTRO_WINDOWS: ret = safe_strdup (g, "windows"); break;
1087 case OS_DISTRO_UBUNTU: ret = safe_strdup (g, "ubuntu"); break;
1088 case OS_DISTRO_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
1095 guestfs__inspect_get_major_version (guestfs_h *g, const char *root)
1097 struct inspect_fs *fs = search_for_root (g, root);
1101 return fs->major_version;
1105 guestfs__inspect_get_minor_version (guestfs_h *g, const char *root)
1107 struct inspect_fs *fs = search_for_root (g, root);
1111 return fs->minor_version;
1115 guestfs__inspect_get_product_name (guestfs_h *g, const char *root)
1117 struct inspect_fs *fs = search_for_root (g, root);
1121 return safe_strdup (g, fs->product_name ? : "unknown");
1125 guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root)
1127 struct inspect_fs *fs = search_for_root (g, root);
1131 if (!fs->windows_systemroot) {
1132 error (g, _("not a Windows guest, or systemroot could not be determined"));
1136 return safe_strdup (g, fs->windows_systemroot);
1140 guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root)
1142 struct inspect_fs *fs = search_for_root (g, root);
1148 /* If no fstab information (Windows) return just the root. */
1149 if (fs->nr_fstab == 0) {
1150 ret = calloc (3, sizeof (char *));
1151 ret[0] = safe_strdup (g, "/");
1152 ret[1] = safe_strdup (g, root);
1157 #define CRITERION fs->fstab[i].mountpoint[0] == '/'
1158 size_t i, count = 0;
1159 for (i = 0; i < fs->nr_fstab; ++i)
1163 /* Hashtables have 2N+1 entries. */
1164 ret = calloc (2*count+1, sizeof (char *));
1166 perrorf (g, "calloc");
1171 for (i = 0; i < fs->nr_fstab; ++i)
1173 ret[2*count] = safe_strdup (g, fs->fstab[i].mountpoint);
1174 ret[2*count+1] = safe_strdup (g, fs->fstab[i].device);
1183 guestfs__inspect_get_filesystems (guestfs_h *g, const char *root)
1185 struct inspect_fs *fs = search_for_root (g, root);
1191 /* If no fstab information (Windows) return just the root. */
1192 if (fs->nr_fstab == 0) {
1193 ret = calloc (2, sizeof (char *));
1194 ret[0] = safe_strdup (g, root);
1199 ret = calloc (fs->nr_fstab + 1, sizeof (char *));
1201 perrorf (g, "calloc");
1206 for (i = 0; i < fs->nr_fstab; ++i)
1207 ret[i] = safe_strdup (g, fs->fstab[i].device);
1212 #else /* no PCRE or hivex at compile time */
1214 /* XXX These functions should be in an optgroup. */
1216 #define NOT_IMPL(r) \
1217 error (g, _("inspection API not available since this version of libguestfs was compiled without PCRE or hivex libraries")); \
1221 guestfs__inspect_os (guestfs_h *g)
1227 guestfs__inspect_get_roots (guestfs_h *g)
1233 guestfs__inspect_get_type (guestfs_h *g, const char *root)
1239 guestfs__inspect_get_arch (guestfs_h *g, const char *root)
1245 guestfs__inspect_get_distro (guestfs_h *g, const char *root)
1251 guestfs__inspect_get_major_version (guestfs_h *g, const char *root)
1257 guestfs__inspect_get_minor_version (guestfs_h *g, const char *root)
1263 guestfs__inspect_get_product_name (guestfs_h *g, const char *root)
1269 guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root)
1275 guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root)
1281 guestfs__inspect_get_filesystems (guestfs_h *g, const char *root)
1286 #endif /* no PCRE or hivex at compile time */
1289 guestfs___free_inspect_info (guestfs_h *g)
1292 for (i = 0; i < g->nr_fses; ++i) {
1293 free (g->fses[i].device);
1294 free (g->fses[i].product_name);
1295 free (g->fses[i].arch);
1296 free (g->fses[i].windows_systemroot);
1298 for (j = 0; j < g->fses[i].nr_fstab; ++j) {
1299 free (g->fses[i].fstab[j].device);
1300 free (g->fses[i].fstab[j].mountpoint);
1302 free (g->fses[i].fstab);
1309 /* In the Perl code this is a public function. */
1311 guestfs___feature_available (guestfs_h *g, const char *feature)
1313 /* If there's an error we should ignore it, so to do that we have to
1314 * temporarily replace the error handler with a null one.
1316 guestfs_error_handler_cb old_error_cb = g->error_cb;
1319 const char *groups[] = { feature, NULL };
1320 int r = guestfs_available (g, (char * const *) groups);
1322 g->error_cb = old_error_cb;
1324 return r == 0 ? 1 : 0;
1329 /* Match a regular expression which contains no captures. Returns
1330 * true if it matches or false if it doesn't.
1333 guestfs___match (guestfs_h *g, const char *str, const pcre *re)
1335 size_t len = strlen (str);
1338 r = pcre_exec (re, NULL, str, len, 0, 0, vec, sizeof vec / sizeof vec[0]);
1339 if (r == PCRE_ERROR_NOMATCH)
1342 /* Internal error -- should not happen. */
1343 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1344 __FILE__, __func__, r, str);
1351 /* Match a regular expression which contains exactly one capture. If
1352 * the string matches, return the capture, otherwise return NULL. The
1353 * caller must free the result.
1356 guestfs___match1 (guestfs_h *g, const char *str, const pcre *re)
1358 size_t len = strlen (str);
1361 r = pcre_exec (re, NULL, str, len, 0, 0, vec, sizeof vec / sizeof vec[0]);
1362 if (r == PCRE_ERROR_NOMATCH)
1365 /* Internal error -- should not happen. */
1366 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1367 __FILE__, __func__, r, str);
1371 return safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
1374 /* Match a regular expression which contains exactly two captures. */
1376 guestfs___match2 (guestfs_h *g, const char *str, const pcre *re,
1377 char **ret1, char **ret2)
1379 size_t len = strlen (str);
1382 r = pcre_exec (re, NULL, str, len, 0, 0, vec, 30);
1383 if (r == PCRE_ERROR_NOMATCH)
1386 /* Internal error -- should not happen. */
1387 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1388 __FILE__, __func__, r, str);
1392 *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
1393 *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]);
1398 /* Match a regular expression which contains exactly three captures. */
1400 guestfs___match3 (guestfs_h *g, const char *str, const pcre *re,
1401 char **ret1, char **ret2, char **ret3)
1403 size_t len = strlen (str);
1406 r = pcre_exec (re, NULL, str, len, 0, 0, vec, 30);
1407 if (r == PCRE_ERROR_NOMATCH)
1410 /* Internal error -- should not happen. */
1411 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1412 __FILE__, __func__, r, str);
1416 *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
1417 *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]);
1418 *ret3 = safe_strndup (g, &str[vec[6]], vec[7]-vec[6]);
1423 #endif /* HAVE_PCRE */