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);
218 static int download_to_tmp (guestfs_h *g, const char *filename, char *localtmp, int64_t max_size);
221 check_for_filesystem_on (guestfs_h *g, const char *device)
223 /* Get vfs-type in order to check if it's a Linux(?) swap device.
224 * If there's an error we should ignore it, so to do that we have to
225 * temporarily replace the error handler with a null one.
227 guestfs_error_handler_cb old_error_cb = g->error_cb;
229 char *vfs_type = guestfs_vfs_type (g, device);
230 g->error_cb = old_error_cb;
232 int is_swap = vfs_type && STREQ (vfs_type, "swap");
235 fprintf (stderr, "check_for_filesystem_on: %s (%s)\n",
236 device, vfs_type ? vfs_type : "failed to get vfs type");
240 if (extend_fses (g) == -1)
242 g->fses[g->nr_fses-1].is_swap = 1;
246 /* Try mounting the device. As above, ignore errors. */
248 int r = guestfs_mount_ro (g, device, "/");
249 if (r == -1 && vfs_type && STREQ (vfs_type, "ufs")) /* Hack for the *BSDs. */
250 r = guestfs_mount_vfs (g, "ro,ufstype=ufs2", "ufs", device, "/");
252 g->error_cb = old_error_cb;
256 /* Do the rest of the checks. */
257 r = check_filesystem (g, device);
259 /* Unmount the filesystem. */
260 if (guestfs_umount_all (g) == -1)
267 check_filesystem (guestfs_h *g, const char *device)
269 if (extend_fses (g) == -1)
272 struct inspect_fs *fs = &g->fses[g->nr_fses-1];
274 fs->device = safe_strdup (g, device);
275 fs->is_mountable = 1;
278 if (guestfs_is_file (g, "/grub/menu.lst") > 0 ||
279 guestfs_is_file (g, "/grub/grub.conf") > 0)
280 fs->content = FS_CONTENT_LINUX_BOOT;
282 else if (guestfs_is_dir (g, "/etc") > 0 &&
283 guestfs_is_dir (g, "/bin") > 0 &&
284 guestfs_is_file (g, "/etc/fstab") > 0) {
286 fs->content = FS_CONTENT_LINUX_ROOT;
287 if (check_linux_root (g, fs) == -1)
290 /* Linux /usr/local? */
291 else if (guestfs_is_dir (g, "/etc") > 0 &&
292 guestfs_is_dir (g, "/bin") > 0 &&
293 guestfs_is_dir (g, "/share") > 0 &&
294 guestfs_exists (g, "/local") == 0 &&
295 guestfs_is_file (g, "/etc/fstab") == 0)
296 fs->content = FS_CONTENT_LINUX_USR_LOCAL;
298 else if (guestfs_is_dir (g, "/etc") > 0 &&
299 guestfs_is_dir (g, "/bin") > 0 &&
300 guestfs_is_dir (g, "/share") > 0 &&
301 guestfs_exists (g, "/local") > 0 &&
302 guestfs_is_file (g, "/etc/fstab") == 0)
303 fs->content = FS_CONTENT_LINUX_USR;
305 else if (guestfs_is_dir (g, "/log") > 0 &&
306 guestfs_is_dir (g, "/run") > 0 &&
307 guestfs_is_dir (g, "/spool") > 0)
308 fs->content = FS_CONTENT_LINUX_VAR;
310 else if (guestfs_is_file (g, "/AUTOEXEC.BAT") > 0 ||
311 guestfs_is_file (g, "/autoexec.bat") > 0 ||
312 guestfs_is_dir (g, "/Program Files") > 0 ||
313 guestfs_is_dir (g, "/WINDOWS") > 0 ||
314 guestfs_is_dir (g, "/Windows") > 0 ||
315 guestfs_is_dir (g, "/windows") > 0 ||
316 guestfs_is_dir (g, "/WIN32") > 0 ||
317 guestfs_is_dir (g, "/Win32") > 0 ||
318 guestfs_is_dir (g, "/WINNT") > 0 ||
319 guestfs_is_file (g, "/boot.ini") > 0 ||
320 guestfs_is_file (g, "/ntldr") > 0) {
322 fs->content = FS_CONTENT_WINDOWS_ROOT;
323 if (check_windows_root (g, fs) == -1)
330 /* Set fs->product_name to the first line of the release file. */
332 parse_release_file (guestfs_h *g, struct inspect_fs *fs,
333 const char *release_filename)
335 char **product_name = guestfs_head_n (g, 1, release_filename);
336 if (product_name == NULL)
338 if (product_name[0] == NULL) {
339 error (g, _("%s: file is empty"), release_filename);
340 guestfs___free_string_list (product_name);
344 /* Note that this string becomes owned by the handle and will
345 * be freed by guestfs___free_inspect_info.
347 fs->product_name = product_name[0];
353 /* Parse generic MAJOR.MINOR from the fs->product_name string. */
355 parse_major_minor (guestfs_h *g, struct inspect_fs *fs)
359 if (match2 (g, fs->product_name, re_major_minor, &major, &minor)) {
360 fs->major_version = parse_unsigned_int (g, major);
362 if (fs->major_version == -1) {
366 fs->minor_version = parse_unsigned_int (g, minor);
368 if (fs->minor_version == -1)
374 /* Ubuntu has /etc/lsb-release containing:
375 * DISTRIB_ID=Ubuntu # Distro
376 * DISTRIB_RELEASE=10.04 # Version
377 * DISTRIB_CODENAME=lucid
378 * DISTRIB_DESCRIPTION="Ubuntu 10.04.1 LTS" # Product name
379 * In theory other distros could have this LSB file, but none do.
382 parse_lsb_release (guestfs_h *g, struct inspect_fs *fs)
388 lines = guestfs_head_n (g, 10, "/etc/lsb-release");
392 for (i = 0; lines[i] != NULL; ++i) {
393 if (fs->distro == 0 &&
394 STREQ (lines[i], "DISTRIB_ID=Ubuntu")) {
395 fs->distro = OS_DISTRO_UBUNTU;
398 else if (STRPREFIX (lines[i], "DISTRIB_RELEASE=")) {
400 if (match2 (g, &lines[i][16], re_major_minor, &major, &minor)) {
401 fs->major_version = parse_unsigned_int (g, major);
403 if (fs->major_version == -1) {
405 guestfs___free_string_list (lines);
408 fs->minor_version = parse_unsigned_int (g, minor);
410 if (fs->minor_version == -1) {
411 guestfs___free_string_list (lines);
416 else if (fs->product_name == NULL &&
417 (STRPREFIX (lines[i], "DISTRIB_DESCRIPTION=\"") ||
418 STRPREFIX (lines[i], "DISTRIB_DESCRIPTION='"))) {
419 size_t len = strlen (lines[i]) - 21 - 1;
420 fs->product_name = safe_strndup (g, &lines[i][21], len);
423 else if (fs->product_name == NULL &&
424 STRPREFIX (lines[i], "DISTRIB_DESCRIPTION=")) {
425 size_t len = strlen (lines[i]) - 20;
426 fs->product_name = safe_strndup (g, &lines[i][20], len);
431 guestfs___free_string_list (lines);
435 /* The currently mounted device is known to be a Linux root. Try to
436 * determine from this the distro, version, etc. Also parse
437 * /etc/fstab to determine the arrangement of mountpoints and
438 * associated devices.
441 check_linux_root (guestfs_h *g, struct inspect_fs *fs)
445 fs->type = OS_TYPE_LINUX;
447 if (guestfs_exists (g, "/etc/lsb-release") > 0) {
448 r = parse_lsb_release (g, fs);
449 if (r == -1) /* error */
451 if (r == 1) /* ok - detected the release from this file */
452 goto skip_release_checks;
455 if (guestfs_exists (g, "/etc/redhat-release") > 0) {
456 fs->distro = OS_DISTRO_REDHAT_BASED; /* Something generic Red Hat-like. */
458 if (parse_release_file (g, fs, "/etc/redhat-release") == -1)
462 if ((major = match1 (g, fs->product_name, re_fedora)) != NULL) {
463 fs->distro = OS_DISTRO_FEDORA;
464 fs->major_version = parse_unsigned_int (g, major);
466 if (fs->major_version == -1)
469 else if (match2 (g, fs->product_name, re_rhel_old, &major, &minor) ||
470 match2 (g, fs->product_name, re_rhel, &major, &minor)) {
471 fs->distro = OS_DISTRO_RHEL;
472 fs->major_version = parse_unsigned_int (g, major);
474 if (fs->major_version == -1) {
478 fs->minor_version = parse_unsigned_int (g, minor);
480 if (fs->minor_version == -1)
483 else if ((major = match1 (g, fs->product_name, re_rhel_no_minor)) != NULL) {
484 fs->distro = OS_DISTRO_RHEL;
485 fs->major_version = parse_unsigned_int (g, major);
487 if (fs->major_version == -1)
489 fs->minor_version = 0;
492 else if (guestfs_exists (g, "/etc/debian_version") > 0) {
493 fs->distro = OS_DISTRO_DEBIAN;
495 if (parse_release_file (g, fs, "/etc/debian_version") == -1)
498 if (parse_major_minor (g, fs) == -1)
501 else if (guestfs_exists (g, "/etc/pardus-release") > 0) {
502 fs->distro = OS_DISTRO_PARDUS;
504 if (parse_release_file (g, fs, "/etc/pardus-release") == -1)
507 if (parse_major_minor (g, fs) == -1)
510 else if (guestfs_exists (g, "/etc/arch-release") > 0) {
511 fs->distro = OS_DISTRO_ARCHLINUX;
513 /* /etc/arch-release file is empty and I can't see a way to
514 * determine the actual release or product string.
517 else if (guestfs_exists (g, "/etc/gentoo-release") > 0) {
518 fs->distro = OS_DISTRO_GENTOO;
520 if (parse_release_file (g, fs, "/etc/gentoo-release") == -1)
523 if (parse_major_minor (g, fs) == -1)
526 else if (guestfs_exists (g, "/etc/meego-release") > 0) {
527 fs->distro = OS_DISTRO_MEEGO;
529 if (parse_release_file (g, fs, "/etc/meego-release") == -1)
532 if (parse_major_minor (g, fs) == -1)
536 skip_release_checks:;
538 /* Determine the architecture. */
539 check_architecture (g, fs);
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
546 if (check_fstab (g, fs) == -1)
553 check_architecture (guestfs_h *g, struct inspect_fs *fs)
555 const char *binaries[] =
556 { "/bin/bash", "/bin/ls", "/bin/echo", "/bin/rm", "/bin/sh" };
559 for (i = 0; i < sizeof binaries / sizeof binaries[0]; ++i) {
560 if (guestfs_is_file (g, binaries[i]) > 0) {
561 /* Ignore errors from file_architecture call. */
562 guestfs_error_handler_cb old_error_cb = g->error_cb;
564 char *arch = guestfs_file_architecture (g, binaries[i]);
565 g->error_cb = old_error_cb;
568 /* String will be owned by handle, freed by
569 * guestfs___free_inspect_info.
578 static int check_fstab_aug_open (guestfs_h *g, struct inspect_fs *fs);
581 check_fstab (guestfs_h *g, struct inspect_fs *fs)
586 /* Security: Refuse to do this if /etc/fstab is huge. */
587 size = guestfs_filesize (g, "/etc/fstab");
588 if (size == -1 || size > 100000) {
589 error (g, _("size of /etc/fstab unreasonable (%" PRIi64 " bytes)"), size);
593 /* XXX What if !feature_available (g, "augeas")? */
594 if (guestfs_aug_init (g, "/", 16|32) == -1)
597 /* Tell Augeas to only load /etc/fstab (thanks Raphaël Pinson). */
598 guestfs_aug_rm (g, "/augeas/load//incl[. != \"/etc/fstab\"]");
599 guestfs_aug_load (g);
601 r = check_fstab_aug_open (g, fs);
602 guestfs_aug_close (g);
610 check_fstab_aug_open (guestfs_h *g, struct inspect_fs *fs)
612 char **lines = guestfs_aug_ls (g, "/files/etc/fstab");
616 if (lines[0] == NULL) {
617 error (g, _("could not parse /etc/fstab or empty file"));
618 guestfs___free_string_list (lines);
624 for (i = 0; lines[i] != NULL; ++i) {
625 /* Ignore comments. Only care about sequence lines which
628 if (match (g, lines[i], re_aug_seq)) {
629 snprintf (augpath, sizeof augpath, "%s/spec", lines[i]);
630 char *spec = guestfs_aug_get (g, augpath);
632 guestfs___free_string_list (lines);
636 snprintf (augpath, sizeof augpath, "%s/file", lines[i]);
637 char *mp = guestfs_aug_get (g, augpath);
639 guestfs___free_string_list (lines);
644 int r = add_fstab_entry (g, fs, spec, mp);
649 guestfs___free_string_list (lines);
655 guestfs___free_string_list (lines);
659 /* Add a filesystem and possibly a mountpoint entry for
660 * the root filesystem 'fs'.
662 * 'spec' is the fstab spec field, which might be a device name or a
663 * pseudodevice or 'UUID=...' or 'LABEL=...'.
665 * 'mp' is the mount point, which could also be 'swap' or 'none'.
668 add_fstab_entry (guestfs_h *g, struct inspect_fs *fs,
669 const char *spec, const char *mp)
671 /* Ignore certain mountpoints. */
672 if (STRPREFIX (mp, "/dev/") ||
673 STREQ (mp, "/dev") ||
674 STRPREFIX (mp, "/media/") ||
675 STRPREFIX (mp, "/proc/") ||
676 STREQ (mp, "/proc") ||
677 STRPREFIX (mp, "/selinux/") ||
678 STREQ (mp, "/selinux") ||
679 STRPREFIX (mp, "/sys/") ||
683 /* Ignore /dev/fd (floppy disks) (RHBZ#642929) and CD-ROM drives. */
684 if ((STRPREFIX (spec, "/dev/fd") && c_isdigit (spec[7])) ||
685 STREQ (spec, "/dev/floppy") ||
686 STREQ (spec, "/dev/cdrom"))
689 /* Resolve UUID= and LABEL= to the actual device. */
691 if (STRPREFIX (spec, "UUID="))
692 device = guestfs_findfs_uuid (g, &spec[5]);
693 else if (STRPREFIX (spec, "LABEL="))
694 device = guestfs_findfs_label (g, &spec[6]);
695 /* Ignore "/.swap" (Pardus) and pseudo-devices like "tmpfs". */
696 else if (STRPREFIX (spec, "/dev/"))
697 /* Resolve guest block device names. */
698 device = resolve_fstab_device (g, spec);
700 /* If we haven't resolved the device successfully by this point,
701 * we don't care, just ignore it.
706 char *mountpoint = safe_strdup (g, mp);
708 /* Add this to the fstab entry in 'fs'.
709 * Note these are further filtered by guestfs_inspect_get_mountpoints
710 * and guestfs_inspect_get_filesystems.
712 size_t n = fs->nr_fstab + 1;
713 struct inspect_fstab_entry *p;
715 p = realloc (fs->fstab, n * sizeof (struct inspect_fstab_entry));
717 perrorf (g, "realloc");
726 /* These are owned by the handle and freed by guestfs___free_inspect_info. */
727 fs->fstab[n-1].device = device;
728 fs->fstab[n-1].mountpoint = mountpoint;
731 fprintf (stderr, "fstab: device=%s mountpoint=%s\n", device, mountpoint);
736 /* Resolve block device name to the libguestfs device name, eg.
737 * /dev/xvdb1 => /dev/vdb1; and /dev/mapper/VG-LV => /dev/VG/LV. This
738 * assumes that disks were added in the same order as they appear to
739 * the real VM, which is a reasonable assumption to make. Return
740 * anything we don't recognize unchanged.
743 resolve_fstab_device (guestfs_h *g, const char *spec)
748 if (STRPREFIX (spec, "/dev/mapper/")) {
749 /* LVM2 does some strange munging on /dev/mapper paths for VGs and
750 * LVs which contain '-' character:
752 * ><fs> lvcreate LV--test VG--test 32
753 * ><fs> debug ls /dev/mapper
754 * VG----test-LV----test
756 * This makes it impossible to reverse those paths directly, so
757 * we have implemented lvm_canonical_lv_name in the daemon.
759 device = guestfs_lvm_canonical_lv_name (g, spec);
761 else if ((a1 = match1 (g, spec, re_xdev)) != NULL) {
762 char **devices = guestfs_list_devices (g);
767 for (count = 0; devices[count] != NULL; count++)
770 size_t i = a1[0] - 'a'; /* a1[0] is always [a-z] because of regex. */
772 size_t len = strlen (devices[i]) + strlen (a1) + 16;
773 device = safe_malloc (g, len);
774 snprintf (device, len, "%s%s", devices[i], &a1[1]);
778 guestfs___free_string_list (devices);
781 /* Didn't match device pattern, return original spec unchanged. */
782 device = safe_strdup (g, spec);
788 /* XXX Handling of boot.ini in the Perl version was pretty broken. It
789 * essentially didn't do anything for modern Windows guests.
790 * Therefore I've omitted all that code.
793 check_windows_root (guestfs_h *g, struct inspect_fs *fs)
795 fs->type = OS_TYPE_WINDOWS;
796 fs->distro = OS_DISTRO_WINDOWS;
798 /* Try to find Windows systemroot using some common locations. */
799 const char *systemroots[] =
800 { "/windows", "/winnt", "/win32", "/win" };
802 char *systemroot = NULL;
804 systemroot == NULL && i < sizeof systemroots / sizeof systemroots[0];
806 systemroot = resolve_windows_path_silently (g, systemroots[i]);
810 error (g, _("cannot resolve Windows %%SYSTEMROOT%%"));
815 fprintf (stderr, "windows %%SYSTEMROOT%% = %s", systemroot);
817 /* Freed by guestfs___free_inspect_info. */
818 fs->windows_systemroot = systemroot;
820 if (check_windows_arch (g, fs) == -1)
823 if (check_windows_registry (g, fs) == -1)
830 check_windows_arch (guestfs_h *g, struct inspect_fs *fs)
832 size_t len = strlen (fs->windows_systemroot) + 32;
834 snprintf (cmd_exe, len, "%s/system32/cmd.exe", fs->windows_systemroot);
836 char *cmd_exe_path = resolve_windows_path_silently (g, cmd_exe);
840 char *arch = guestfs_file_architecture (g, cmd_exe_path);
844 fs->arch = arch; /* freed by guestfs___free_inspect_info */
849 /* At the moment, pull just the ProductName and version numbers from
850 * the registry. In future there is a case for making many more
851 * registry fields available to callers.
854 check_windows_registry (guestfs_h *g, struct inspect_fs *fs)
856 TMP_TEMPLATE_ON_STACK (software_local);
858 size_t len = strlen (fs->windows_systemroot) + 64;
860 snprintf (software, len, "%s/system32/config/software",
861 fs->windows_systemroot);
863 char *software_path = resolve_windows_path_silently (g, software);
865 /* If the software hive doesn't exist, just accept that we cannot
866 * find product_name etc.
872 hive_value_h *values = NULL;
874 if (download_to_tmp (g, software_path, software_local, 100000000) == -1)
877 h = hivex_open (software_local, g->verbose ? HIVEX_OPEN_VERBOSE : 0);
879 perrorf (g, "hivex_open");
883 hive_node_h node = hivex_root (h);
884 const char *hivepath[] =
885 { "Microsoft", "Windows NT", "CurrentVersion" };
888 node != 0 && i < sizeof hivepath / sizeof hivepath[0];
890 node = hivex_node_get_child (h, node, hivepath[i]);
894 perrorf (g, "hivex: cannot locate HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion");
898 values = hivex_node_values (h, node);
900 for (i = 0; values[i] != 0; ++i) {
901 char *key = hivex_value_key (h, values[i]);
903 perrorf (g, "hivex_value_key");
907 if (STRCASEEQ (key, "ProductName")) {
908 fs->product_name = hivex_value_string (h, values[i]);
909 if (!fs->product_name) {
910 perrorf (g, "hivex_value_string");
915 else if (STRCASEEQ (key, "CurrentVersion")) {
916 char *version = hivex_value_string (h, values[i]);
918 perrorf (g, "hivex_value_string");
923 if (match2 (g, version, re_windows_version, &major, &minor)) {
924 fs->major_version = parse_unsigned_int (g, major);
926 if (fs->major_version == -1) {
932 fs->minor_version = parse_unsigned_int (g, minor);
934 if (fs->minor_version == -1) {
950 if (h) hivex_close (h);
952 free (software_path);
954 /* Free up the temporary file. */
955 unlink (software_local);
956 #undef software_local_len
962 resolve_windows_path_silently (guestfs_h *g, const char *path)
964 guestfs_error_handler_cb old_error_cb = g->error_cb;
966 char *ret = guestfs_case_sensitive_path (g, path);
967 g->error_cb = old_error_cb;
972 extend_fses (guestfs_h *g)
974 size_t n = g->nr_fses + 1;
975 struct inspect_fs *p;
977 p = realloc (g->fses, n * sizeof (struct inspect_fs));
979 perrorf (g, "realloc");
986 memset (&g->fses[n-1], 0, sizeof (struct inspect_fs));
991 /* Parse small, unsigned ints, as used in version numbers. */
993 parse_unsigned_int (guestfs_h *g, const char *str)
996 int r = xstrtol (str, NULL, 10, &ret, "");
997 if (r != LONGINT_OK) {
998 error (g, _("could not parse integer in version number: %s"), str);
1004 static struct inspect_fs *
1005 search_for_root (guestfs_h *g, const char *root)
1007 if (g->nr_fses == 0) {
1008 error (g, _("no inspection data: call guestfs_inspect_os first"));
1013 struct inspect_fs *fs;
1014 for (i = 0; i < g->nr_fses; ++i) {
1016 if (fs->is_root && STREQ (root, fs->device))
1020 error (g, _("%s: root device not found: only call this function with a root device previously returned by guestfs_inspect_os"),
1026 guestfs__inspect_get_type (guestfs_h *g, const char *root)
1028 struct inspect_fs *fs = search_for_root (g, root);
1034 case OS_TYPE_LINUX: ret = safe_strdup (g, "linux"); break;
1035 case OS_TYPE_WINDOWS: ret = safe_strdup (g, "windows"); break;
1036 case OS_TYPE_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
1043 guestfs__inspect_get_arch (guestfs_h *g, const char *root)
1045 struct inspect_fs *fs = search_for_root (g, root);
1049 return safe_strdup (g, fs->arch ? : "unknown");
1053 guestfs__inspect_get_distro (guestfs_h *g, const char *root)
1055 struct inspect_fs *fs = search_for_root (g, root);
1060 switch (fs->distro) {
1061 case OS_DISTRO_ARCHLINUX: ret = safe_strdup (g, "archlinux"); break;
1062 case OS_DISTRO_DEBIAN: ret = safe_strdup (g, "debian"); break;
1063 case OS_DISTRO_FEDORA: ret = safe_strdup (g, "fedora"); break;
1064 case OS_DISTRO_GENTOO: ret = safe_strdup (g, "gentoo"); break;
1065 case OS_DISTRO_MEEGO: ret = safe_strdup (g, "meego"); break;
1066 case OS_DISTRO_PARDUS: ret = safe_strdup (g, "pardus"); break;
1067 case OS_DISTRO_REDHAT_BASED: ret = safe_strdup (g, "redhat-based"); break;
1068 case OS_DISTRO_RHEL: ret = safe_strdup (g, "rhel"); break;
1069 case OS_DISTRO_WINDOWS: ret = safe_strdup (g, "windows"); break;
1070 case OS_DISTRO_UBUNTU: ret = safe_strdup (g, "ubuntu"); break;
1071 case OS_DISTRO_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
1078 guestfs__inspect_get_major_version (guestfs_h *g, const char *root)
1080 struct inspect_fs *fs = search_for_root (g, root);
1084 return fs->major_version;
1088 guestfs__inspect_get_minor_version (guestfs_h *g, const char *root)
1090 struct inspect_fs *fs = search_for_root (g, root);
1094 return fs->minor_version;
1098 guestfs__inspect_get_product_name (guestfs_h *g, const char *root)
1100 struct inspect_fs *fs = search_for_root (g, root);
1104 return safe_strdup (g, fs->product_name ? : "unknown");
1108 guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root)
1110 struct inspect_fs *fs = search_for_root (g, root);
1114 if (!fs->windows_systemroot) {
1115 error (g, _("not a Windows guest, or systemroot could not be determined"));
1119 return safe_strdup (g, fs->windows_systemroot);
1123 guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root)
1125 struct inspect_fs *fs = search_for_root (g, root);
1131 /* If no fstab information (Windows) return just the root. */
1132 if (fs->nr_fstab == 0) {
1133 ret = calloc (3, sizeof (char *));
1134 ret[0] = safe_strdup (g, "/");
1135 ret[1] = safe_strdup (g, root);
1140 #define CRITERION fs->fstab[i].mountpoint[0] == '/'
1141 size_t i, count = 0;
1142 for (i = 0; i < fs->nr_fstab; ++i)
1146 /* Hashtables have 2N+1 entries. */
1147 ret = calloc (2*count+1, sizeof (char *));
1149 perrorf (g, "calloc");
1154 for (i = 0; i < fs->nr_fstab; ++i)
1156 ret[2*count] = safe_strdup (g, fs->fstab[i].mountpoint);
1157 ret[2*count+1] = safe_strdup (g, fs->fstab[i].device);
1166 guestfs__inspect_get_filesystems (guestfs_h *g, const char *root)
1168 struct inspect_fs *fs = search_for_root (g, root);
1174 /* If no fstab information (Windows) return just the root. */
1175 if (fs->nr_fstab == 0) {
1176 ret = calloc (2, sizeof (char *));
1177 ret[0] = safe_strdup (g, root);
1182 ret = calloc (fs->nr_fstab + 1, sizeof (char *));
1184 perrorf (g, "calloc");
1189 for (i = 0; i < fs->nr_fstab; ++i)
1190 ret[i] = safe_strdup (g, fs->fstab[i].device);
1195 /* Download to a guest file to a local temporary file. Refuse to
1196 * download the guest file if it is larger than max_size. The caller
1197 * is responsible for deleting the temporary file after use.
1200 download_to_tmp (guestfs_h *g, const char *filename,
1201 char *localtmp, int64_t max_size)
1207 size = guestfs_filesize (g, filename);
1209 /* guestfs_filesize failed and has already set error in handle */
1211 if (size > max_size) {
1212 error (g, _("size of %s is unreasonably large (%" PRIi64 " bytes)"),
1217 fd = mkstemp (localtmp);
1219 perrorf (g, "mkstemp");
1223 snprintf (buf, sizeof buf, "/dev/fd/%d", fd);
1225 if (guestfs_download (g, filename, buf) == -1) {
1231 if (close (fd) == -1) {
1232 perrorf (g, "close: %s", localtmp);
1240 #else /* no PCRE or hivex at compile time */
1242 /* XXX These functions should be in an optgroup. */
1244 #define NOT_IMPL(r) \
1245 error (g, _("inspection API not available since this version of libguestfs was compiled without PCRE or hivex libraries")); \
1249 guestfs__inspect_os (guestfs_h *g)
1255 guestfs__inspect_get_roots (guestfs_h *g)
1261 guestfs__inspect_get_type (guestfs_h *g, const char *root)
1267 guestfs__inspect_get_arch (guestfs_h *g, const char *root)
1273 guestfs__inspect_get_distro (guestfs_h *g, const char *root)
1279 guestfs__inspect_get_major_version (guestfs_h *g, const char *root)
1285 guestfs__inspect_get_minor_version (guestfs_h *g, const char *root)
1291 guestfs__inspect_get_product_name (guestfs_h *g, const char *root)
1297 guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root)
1303 guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root)
1309 guestfs__inspect_get_filesystems (guestfs_h *g, const char *root)
1314 #endif /* no PCRE or hivex at compile time */
1317 guestfs___free_inspect_info (guestfs_h *g)
1320 for (i = 0; i < g->nr_fses; ++i) {
1321 free (g->fses[i].device);
1322 free (g->fses[i].product_name);
1323 free (g->fses[i].arch);
1324 free (g->fses[i].windows_systemroot);
1326 for (j = 0; j < g->fses[i].nr_fstab; ++j) {
1327 free (g->fses[i].fstab[j].device);
1328 free (g->fses[i].fstab[j].mountpoint);
1330 free (g->fses[i].fstab);
1337 /* In the Perl code this is a public function. */
1339 guestfs___feature_available (guestfs_h *g, const char *feature)
1341 /* If there's an error we should ignore it, so to do that we have to
1342 * temporarily replace the error handler with a null one.
1344 guestfs_error_handler_cb old_error_cb = g->error_cb;
1347 const char *groups[] = { feature, NULL };
1348 int r = guestfs_available (g, (char * const *) groups);
1350 g->error_cb = old_error_cb;
1352 return r == 0 ? 1 : 0;
1357 /* Match a regular expression which contains no captures. Returns
1358 * true if it matches or false if it doesn't.
1361 guestfs___match (guestfs_h *g, const char *str, const pcre *re)
1363 size_t len = strlen (str);
1366 r = pcre_exec (re, NULL, str, len, 0, 0, vec, sizeof vec / sizeof vec[0]);
1367 if (r == PCRE_ERROR_NOMATCH)
1370 /* Internal error -- should not happen. */
1371 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1372 __FILE__, __func__, r, str);
1379 /* Match a regular expression which contains exactly one capture. If
1380 * the string matches, return the capture, otherwise return NULL. The
1381 * caller must free the result.
1384 guestfs___match1 (guestfs_h *g, const char *str, const pcre *re)
1386 size_t len = strlen (str);
1389 r = pcre_exec (re, NULL, str, len, 0, 0, vec, sizeof vec / sizeof vec[0]);
1390 if (r == PCRE_ERROR_NOMATCH)
1393 /* Internal error -- should not happen. */
1394 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1395 __FILE__, __func__, r, str);
1399 return safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
1402 /* Match a regular expression which contains exactly two captures. */
1404 guestfs___match2 (guestfs_h *g, const char *str, const pcre *re,
1405 char **ret1, char **ret2)
1407 size_t len = strlen (str);
1410 r = pcre_exec (re, NULL, str, len, 0, 0, vec, 30);
1411 if (r == PCRE_ERROR_NOMATCH)
1414 /* Internal error -- should not happen. */
1415 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1416 __FILE__, __func__, r, str);
1420 *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
1421 *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]);
1426 /* Match a regular expression which contains exactly three captures. */
1428 guestfs___match3 (guestfs_h *g, const char *str, const pcre *re,
1429 char **ret1, char **ret2, char **ret3)
1431 size_t len = strlen (str);
1434 r = pcre_exec (re, NULL, str, len, 0, 0, vec, 30);
1435 if (r == PCRE_ERROR_NOMATCH)
1438 /* Internal error -- should not happen. */
1439 fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
1440 __FILE__, __func__, r, str);
1444 *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
1445 *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]);
1446 *ret3 = safe_strndup (g, &str[vec[6]], vec[7]-vec[6]);
1451 #endif /* HAVE_PCRE */