X-Git-Url: http://git.annexia.org/?p=libguestfs.git;a=blobdiff_plain;f=src%2Finspect.c;h=70612087841853b76e1b005b90c281f3632d23c6;hp=f5e4490b7a285a9b0375f11d916f1a580e24c56c;hb=2b0ca7e7b8d369a42a51b1feec72ae8f17257c78;hpb=55e6ccb23e0b1f954107b4d0284d3d41f7a4e7b8 diff --git a/src/inspect.c b/src/inspect.c index f5e4490..7061208 100644 --- a/src/inspect.c +++ b/src/inspect.c @@ -1,5 +1,5 @@ /* libguestfs - * Copyright (C) 2010 Red Hat Inc. + * Copyright (C) 2010-2011 Red Hat Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -23,8 +23,11 @@ #include #include #include +#include #include #include +#include +#include #ifdef HAVE_PCRE #include @@ -45,67 +48,7 @@ #if defined(HAVE_PCRE) && defined(HAVE_HIVEX) -/* Compile all the regular expressions once when the shared library is - * loaded. PCRE is thread safe so we're supposedly OK here if - * multiple threads call into the libguestfs API functions below - * simultaneously. - */ -static pcre *re_fedora; -static pcre *re_rhel_old; -static pcre *re_rhel; -static pcre *re_rhel_no_minor; -static pcre *re_major_minor; -static pcre *re_aug_seq; -static pcre *re_xdev; -static pcre *re_windows_version; - -static void compile_regexps (void) __attribute__((constructor)); -static void free_regexps (void) __attribute__((destructor)); - -static void -compile_regexps (void) -{ - const char *err; - int offset; - -#define COMPILE(re,pattern,options) \ - do { \ - re = pcre_compile ((pattern), (options), &err, &offset, NULL); \ - if (re == NULL) { \ - ignore_value (write (2, err, strlen (err))); \ - abort (); \ - } \ - } while (0) - - COMPILE (re_fedora, "Fedora release (\\d+)", 0); - COMPILE (re_rhel_old, - "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+).*Update (\\d+)", 0); - COMPILE (re_rhel, - "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+)\\.(\\d+)", 0); - COMPILE (re_rhel_no_minor, - "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+)", 0); - COMPILE (re_major_minor, "(\\d+)\\.(\\d+)", 0); - COMPILE (re_aug_seq, "/\\d+$", 0); - COMPILE (re_xdev, "^/dev/(?:h|s|v|xv)d([a-z]\\d*)$", 0); - COMPILE (re_windows_version, "^(\\d+)\\.(\\d+)", 0); -} - -static void -free_regexps (void) -{ - pcre_free (re_fedora); - pcre_free (re_rhel_old); - pcre_free (re_rhel); - pcre_free (re_rhel_no_minor); - pcre_free (re_major_minor); - pcre_free (re_aug_seq); - pcre_free (re_xdev); - pcre_free (re_windows_version); -} - /* The main inspection code. */ -static int check_for_filesystem_on (guestfs_h *g, const char *device); - char ** guestfs__inspect_os (guestfs_h *g) { @@ -127,7 +70,7 @@ guestfs__inspect_os (guestfs_h *g) size_t i; for (i = 0; devices[i] != NULL; ++i) { - if (check_for_filesystem_on (g, devices[i]) == -1) { + if (guestfs___check_for_filesystem_on (g, devices[i], 1, 0) == -1) { guestfs___free_string_list (devices); guestfs___free_inspect_info (g); return NULL; @@ -144,7 +87,7 @@ guestfs__inspect_os (guestfs_h *g) } for (i = 0; partitions[i] != NULL; ++i) { - if (check_for_filesystem_on (g, partitions[i]) == -1) { + if (guestfs___check_for_filesystem_on (g, partitions[i], 0, i+1) == -1) { guestfs___free_string_list (partitions); guestfs___free_inspect_info (g); return NULL; @@ -162,7 +105,7 @@ guestfs__inspect_os (guestfs_h *g) } for (i = 0; lvs[i] != NULL; ++i) { - if (check_for_filesystem_on (g, lvs[i]) == -1) { + if (guestfs___check_for_filesystem_on (g, lvs[i], 0, 0) == -1) { guestfs___free_string_list (lvs); guestfs___free_inspect_info (g); return NULL; @@ -182,904 +125,6 @@ guestfs__inspect_os (guestfs_h *g) return ret; } -/* Find out if 'device' contains a filesystem. If it does, add - * another entry in g->fses. - */ -static int check_filesystem (guestfs_h *g, const char *device); -static int check_linux_root (guestfs_h *g, struct inspect_fs *fs); -static int check_fstab (guestfs_h *g, struct inspect_fs *fs); -static int check_windows_root (guestfs_h *g, struct inspect_fs *fs); -static int check_windows_arch (guestfs_h *g, struct inspect_fs *fs); -static int check_windows_registry (guestfs_h *g, struct inspect_fs *fs); -static char *resolve_windows_path_silently (guestfs_h *g, const char *); -static int extend_fses (guestfs_h *g); -static int parse_unsigned_int (guestfs_h *g, const char *str); -static int add_fstab_entry (guestfs_h *g, struct inspect_fs *fs, - const char *spec, const char *mp); -static char *resolve_fstab_device (guestfs_h *g, const char *spec); -static void check_package_format (guestfs_h *g, struct inspect_fs *fs); -static void check_package_management (guestfs_h *g, struct inspect_fs *fs); - -static int -check_for_filesystem_on (guestfs_h *g, const char *device) -{ - /* Get vfs-type in order to check if it's a Linux(?) swap device. - * If there's an error we should ignore it, so to do that we have to - * temporarily replace the error handler with a null one. - */ - guestfs_error_handler_cb old_error_cb = g->error_cb; - g->error_cb = NULL; - char *vfs_type = guestfs_vfs_type (g, device); - g->error_cb = old_error_cb; - - int is_swap = vfs_type && STREQ (vfs_type, "swap"); - - if (g->verbose) - fprintf (stderr, "check_for_filesystem_on: %s (%s)\n", - device, vfs_type ? vfs_type : "failed to get vfs type"); - - if (is_swap) { - free (vfs_type); - if (extend_fses (g) == -1) - return -1; - g->fses[g->nr_fses-1].is_swap = 1; - return 0; - } - - /* Try mounting the device. As above, ignore errors. */ - g->error_cb = NULL; - int r = guestfs_mount_ro (g, device, "/"); - if (r == -1 && vfs_type && STREQ (vfs_type, "ufs")) /* Hack for the *BSDs. */ - r = guestfs_mount_vfs (g, "ro,ufstype=ufs2", "ufs", device, "/"); - free (vfs_type); - g->error_cb = old_error_cb; - if (r == -1) - return 0; - - /* Do the rest of the checks. */ - r = check_filesystem (g, device); - - /* Unmount the filesystem. */ - if (guestfs_umount_all (g) == -1) - return -1; - - return r; -} - -static int -check_filesystem (guestfs_h *g, const char *device) -{ - if (extend_fses (g) == -1) - return -1; - - struct inspect_fs *fs = &g->fses[g->nr_fses-1]; - - fs->device = safe_strdup (g, device); - fs->is_mountable = 1; - - /* Grub /boot? */ - if (guestfs_is_file (g, "/grub/menu.lst") > 0 || - guestfs_is_file (g, "/grub/grub.conf") > 0) - fs->content = FS_CONTENT_LINUX_BOOT; - /* Linux root? */ - else if (guestfs_is_dir (g, "/etc") > 0 && - guestfs_is_dir (g, "/bin") > 0 && - guestfs_is_file (g, "/etc/fstab") > 0) { - fs->is_root = 1; - fs->content = FS_CONTENT_LINUX_ROOT; - if (check_linux_root (g, fs) == -1) - return -1; - } - /* Linux /usr/local? */ - else if (guestfs_is_dir (g, "/etc") > 0 && - guestfs_is_dir (g, "/bin") > 0 && - guestfs_is_dir (g, "/share") > 0 && - guestfs_exists (g, "/local") == 0 && - guestfs_is_file (g, "/etc/fstab") == 0) - fs->content = FS_CONTENT_LINUX_USR_LOCAL; - /* Linux /usr? */ - else if (guestfs_is_dir (g, "/etc") > 0 && - guestfs_is_dir (g, "/bin") > 0 && - guestfs_is_dir (g, "/share") > 0 && - guestfs_exists (g, "/local") > 0 && - guestfs_is_file (g, "/etc/fstab") == 0) - fs->content = FS_CONTENT_LINUX_USR; - /* Linux /var? */ - else if (guestfs_is_dir (g, "/log") > 0 && - guestfs_is_dir (g, "/run") > 0 && - guestfs_is_dir (g, "/spool") > 0) - fs->content = FS_CONTENT_LINUX_VAR; - /* Windows root? */ - else if (guestfs_is_file (g, "/AUTOEXEC.BAT") > 0 || - guestfs_is_file (g, "/autoexec.bat") > 0 || - guestfs_is_dir (g, "/Program Files") > 0 || - guestfs_is_dir (g, "/WINDOWS") > 0 || - guestfs_is_dir (g, "/Windows") > 0 || - guestfs_is_dir (g, "/windows") > 0 || - guestfs_is_dir (g, "/WIN32") > 0 || - guestfs_is_dir (g, "/Win32") > 0 || - guestfs_is_dir (g, "/WINNT") > 0 || - guestfs_is_file (g, "/boot.ini") > 0 || - guestfs_is_file (g, "/ntldr") > 0) { - fs->is_root = 1; - fs->content = FS_CONTENT_WINDOWS_ROOT; - if (check_windows_root (g, fs) == -1) - return -1; - } - - return 0; -} - -/* Set fs->product_name to the first line of the release file. */ -static int -parse_release_file (guestfs_h *g, struct inspect_fs *fs, - const char *release_filename) -{ - char **product_name = guestfs_head_n (g, 1, release_filename); - if (product_name == NULL) - return -1; - if (product_name[0] == NULL) { - error (g, "%s: file is empty", release_filename); - guestfs___free_string_list (product_name); - return -1; - } - - /* Note that this string becomes owned by the handle and will - * be freed by guestfs___free_inspect_info. - */ - fs->product_name = product_name[0]; - free (product_name); - - return 0; -} - -/* Parse generic MAJOR.MINOR from the fs->product_name string. */ -static int -parse_major_minor (guestfs_h *g, struct inspect_fs *fs) -{ - char *major, *minor; - - if (match2 (g, fs->product_name, re_major_minor, &major, &minor)) { - fs->major_version = parse_unsigned_int (g, major); - free (major); - if (fs->major_version == -1) { - free (minor); - return -1; - } - fs->minor_version = parse_unsigned_int (g, minor); - free (minor); - if (fs->minor_version == -1) - return -1; - } - return 0; -} - -/* Ubuntu has /etc/lsb-release containing: - * DISTRIB_ID=Ubuntu # Distro - * DISTRIB_RELEASE=10.04 # Version - * DISTRIB_CODENAME=lucid - * DISTRIB_DESCRIPTION="Ubuntu 10.04.1 LTS" # Product name - * In theory other distros could have this LSB file, but none do. - */ -static int -parse_lsb_release (guestfs_h *g, struct inspect_fs *fs) -{ - char **lines; - size_t i; - int r = 0; - - lines = guestfs_head_n (g, 10, "/etc/lsb-release"); - if (lines == NULL) - return -1; - - for (i = 0; lines[i] != NULL; ++i) { - if (fs->distro == 0 && - STREQ (lines[i], "DISTRIB_ID=Ubuntu")) { - fs->distro = OS_DISTRO_UBUNTU; - r = 1; - } - else if (STRPREFIX (lines[i], "DISTRIB_RELEASE=")) { - char *major, *minor; - if (match2 (g, &lines[i][16], re_major_minor, &major, &minor)) { - fs->major_version = parse_unsigned_int (g, major); - free (major); - if (fs->major_version == -1) { - free (minor); - guestfs___free_string_list (lines); - return -1; - } - fs->minor_version = parse_unsigned_int (g, minor); - free (minor); - if (fs->minor_version == -1) { - guestfs___free_string_list (lines); - return -1; - } - } - } - else if (fs->product_name == NULL && - (STRPREFIX (lines[i], "DISTRIB_DESCRIPTION=\"") || - STRPREFIX (lines[i], "DISTRIB_DESCRIPTION='"))) { - size_t len = strlen (lines[i]) - 21 - 1; - fs->product_name = safe_strndup (g, &lines[i][21], len); - r = 1; - } - else if (fs->product_name == NULL && - STRPREFIX (lines[i], "DISTRIB_DESCRIPTION=")) { - size_t len = strlen (lines[i]) - 20; - fs->product_name = safe_strndup (g, &lines[i][20], len); - r = 1; - } - } - - guestfs___free_string_list (lines); - return r; -} - -/* The currently mounted device is known to be a Linux root. Try to - * determine from this the distro, version, etc. Also parse - * /etc/fstab to determine the arrangement of mountpoints and - * associated devices. - */ -static int -check_linux_root (guestfs_h *g, struct inspect_fs *fs) -{ - int r; - - fs->type = OS_TYPE_LINUX; - - if (guestfs_exists (g, "/etc/lsb-release") > 0) { - r = parse_lsb_release (g, fs); - if (r == -1) /* error */ - return -1; - if (r == 1) /* ok - detected the release from this file */ - goto skip_release_checks; - } - - if (guestfs_exists (g, "/etc/redhat-release") > 0) { - fs->distro = OS_DISTRO_REDHAT_BASED; /* Something generic Red Hat-like. */ - - if (parse_release_file (g, fs, "/etc/redhat-release") == -1) - return -1; - - char *major, *minor; - if ((major = match1 (g, fs->product_name, re_fedora)) != NULL) { - fs->distro = OS_DISTRO_FEDORA; - fs->major_version = parse_unsigned_int (g, major); - free (major); - if (fs->major_version == -1) - return -1; - } - else if (match2 (g, fs->product_name, re_rhel_old, &major, &minor) || - match2 (g, fs->product_name, re_rhel, &major, &minor)) { - fs->distro = OS_DISTRO_RHEL; - fs->major_version = parse_unsigned_int (g, major); - free (major); - if (fs->major_version == -1) { - free (minor); - return -1; - } - fs->minor_version = parse_unsigned_int (g, minor); - free (minor); - if (fs->minor_version == -1) - return -1; - } - else if ((major = match1 (g, fs->product_name, re_rhel_no_minor)) != NULL) { - fs->distro = OS_DISTRO_RHEL; - fs->major_version = parse_unsigned_int (g, major); - free (major); - if (fs->major_version == -1) - return -1; - fs->minor_version = 0; - } - } - else if (guestfs_exists (g, "/etc/debian_version") > 0) { - fs->distro = OS_DISTRO_DEBIAN; - - if (parse_release_file (g, fs, "/etc/debian_version") == -1) - return -1; - - if (parse_major_minor (g, fs) == -1) - return -1; - } - else if (guestfs_exists (g, "/etc/pardus-release") > 0) { - fs->distro = OS_DISTRO_PARDUS; - - if (parse_release_file (g, fs, "/etc/pardus-release") == -1) - return -1; - - if (parse_major_minor (g, fs) == -1) - return -1; - } - else if (guestfs_exists (g, "/etc/arch-release") > 0) { - fs->distro = OS_DISTRO_ARCHLINUX; - - /* /etc/arch-release file is empty and I can't see a way to - * determine the actual release or product string. - */ - } - else if (guestfs_exists (g, "/etc/gentoo-release") > 0) { - fs->distro = OS_DISTRO_GENTOO; - - if (parse_release_file (g, fs, "/etc/gentoo-release") == -1) - return -1; - - if (parse_major_minor (g, fs) == -1) - return -1; - } - else if (guestfs_exists (g, "/etc/meego-release") > 0) { - fs->distro = OS_DISTRO_MEEGO; - - if (parse_release_file (g, fs, "/etc/meego-release") == -1) - return -1; - - if (parse_major_minor (g, fs) == -1) - return -1; - } - - skip_release_checks:; - - /* If distro test above was successful, work out the package format. */ - check_package_format (g, fs); - check_package_management (g, fs); - - /* Determine the architecture. */ - const char *binaries[] = - { "/bin/bash", "/bin/ls", "/bin/echo", "/bin/rm", "/bin/sh" }; - size_t i; - for (i = 0; i < sizeof binaries / sizeof binaries[0]; ++i) { - if (guestfs_is_file (g, binaries[i]) > 0) { - /* Ignore errors from file_architecture call. */ - guestfs_error_handler_cb old_error_cb = g->error_cb; - g->error_cb = NULL; - char *arch = guestfs_file_architecture (g, binaries[i]); - g->error_cb = old_error_cb; - - if (arch) { - /* String will be owned by handle, freed by - * guestfs___free_inspect_info. - */ - fs->arch = arch; - break; - } - } - } - - /* We already know /etc/fstab exists because it's part of the test - * for Linux root above. We must now parse this file to determine - * which filesystems are used by the operating system and how they - * are mounted. - * XXX What if !feature_available (g, "augeas")? - */ - if (guestfs_aug_init (g, "/", 16|32) == -1) - return -1; - - /* Tell Augeas to only load /etc/fstab (thanks Raphaël Pinson). */ - guestfs_aug_rm (g, "/augeas/load//incl[. != \"/etc/fstab\"]"); - guestfs_aug_load (g); - - r = check_fstab (g, fs); - guestfs_aug_close (g); - if (r == -1) - return -1; - - return 0; -} - -static int -check_fstab (guestfs_h *g, struct inspect_fs *fs) -{ - char **lines = guestfs_aug_ls (g, "/files/etc/fstab"); - if (lines == NULL) - return -1; - - if (lines[0] == NULL) { - error (g, "could not parse /etc/fstab or empty file"); - guestfs___free_string_list (lines); - return -1; - } - - size_t i; - char augpath[256]; - for (i = 0; lines[i] != NULL; ++i) { - /* Ignore comments. Only care about sequence lines which - * match m{/\d+$}. - */ - if (match (g, lines[i], re_aug_seq)) { - snprintf (augpath, sizeof augpath, "%s/spec", lines[i]); - char *spec = guestfs_aug_get (g, augpath); - if (spec == NULL) { - guestfs___free_string_list (lines); - return -1; - } - - snprintf (augpath, sizeof augpath, "%s/file", lines[i]); - char *mp = guestfs_aug_get (g, augpath); - if (mp == NULL) { - guestfs___free_string_list (lines); - free (spec); - return -1; - } - - int r = add_fstab_entry (g, fs, spec, mp); - free (spec); - free (mp); - - if (r == -1) { - guestfs___free_string_list (lines); - return -1; - } - } - } - - guestfs___free_string_list (lines); - return 0; -} - -/* Add a filesystem and possibly a mountpoint entry for - * the root filesystem 'fs'. - * - * 'spec' is the fstab spec field, which might be a device name or a - * pseudodevice or 'UUID=...' or 'LABEL=...'. - * - * 'mp' is the mount point, which could also be 'swap' or 'none'. - */ -static int -add_fstab_entry (guestfs_h *g, struct inspect_fs *fs, - const char *spec, const char *mp) -{ - /* Ignore certain mountpoints. */ - if (STRPREFIX (mp, "/dev/") || - STREQ (mp, "/dev") || - STRPREFIX (mp, "/media/") || - STRPREFIX (mp, "/proc/") || - STREQ (mp, "/proc") || - STRPREFIX (mp, "/selinux/") || - STREQ (mp, "/selinux") || - STRPREFIX (mp, "/sys/") || - STREQ (mp, "/sys")) - return 0; - - /* Ignore /dev/fd (floppy disks) (RHBZ#642929) and CD-ROM drives. */ - if ((STRPREFIX (spec, "/dev/fd") && c_isdigit (spec[7])) || - STREQ (spec, "/dev/floppy") || - STREQ (spec, "/dev/cdrom")) - return 0; - - /* Resolve UUID= and LABEL= to the actual device. */ - char *device = NULL; - if (STRPREFIX (spec, "UUID=")) - device = guestfs_findfs_uuid (g, &spec[5]); - else if (STRPREFIX (spec, "LABEL=")) - device = guestfs_findfs_label (g, &spec[6]); - /* Ignore "/.swap" (Pardus) and pseudo-devices like "tmpfs". */ - else if (STRPREFIX (spec, "/dev/")) - /* Resolve guest block device names. */ - device = resolve_fstab_device (g, spec); - - /* If we haven't resolved the device successfully by this point, - * we don't care, just ignore it. - */ - if (device == NULL) - return 0; - - char *mountpoint = safe_strdup (g, mp); - - /* Add this to the fstab entry in 'fs'. - * Note these are further filtered by guestfs_inspect_get_mountpoints - * and guestfs_inspect_get_filesystems. - */ - size_t n = fs->nr_fstab + 1; - struct inspect_fstab_entry *p; - - p = realloc (fs->fstab, n * sizeof (struct inspect_fstab_entry)); - if (p == NULL) { - perrorf (g, "realloc"); - free (device); - free (mountpoint); - return -1; - } - - fs->fstab = p; - fs->nr_fstab = n; - - /* These are owned by the handle and freed by guestfs___free_inspect_info. */ - fs->fstab[n-1].device = device; - fs->fstab[n-1].mountpoint = mountpoint; - - if (g->verbose) - fprintf (stderr, "fstab: device=%s mountpoint=%s\n", device, mountpoint); - - return 0; -} - -/* Resolve block device name to the libguestfs device name, eg. - * /dev/xvdb1 => /dev/vdb1; and /dev/mapper/VG-LV => /dev/VG/LV. This - * assumes that disks were added in the same order as they appear to - * the real VM, which is a reasonable assumption to make. Return - * anything we don't recognize unchanged. - */ -static char * -resolve_fstab_device (guestfs_h *g, const char *spec) -{ - char *a1; - char *device = NULL; - - if (STRPREFIX (spec, "/dev/mapper/")) { - /* LVM2 does some strange munging on /dev/mapper paths for VGs and - * LVs which contain '-' character: - * - * > lvcreate LV--test VG--test 32 - * > debug ls /dev/mapper - * VG----test-LV----test - * - * This makes it impossible to reverse those paths directly, so - * we have implemented lvm_canonical_lv_name in the daemon. - */ - device = guestfs_lvm_canonical_lv_name (g, spec); - } - else if ((a1 = match1 (g, spec, re_xdev)) != NULL) { - char **devices = guestfs_list_devices (g); - if (devices == NULL) - return NULL; - - size_t count; - for (count = 0; devices[count] != NULL; count++) - ; - - size_t i = a1[0] - 'a'; /* a1[0] is always [a-z] because of regex. */ - if (i < count) { - size_t len = strlen (devices[i]) + strlen (a1) + 16; - device = safe_malloc (g, len); - snprintf (device, len, "%s%s", devices[i], &a1[1]); - } - - free (a1); - guestfs___free_string_list (devices); - } - else { - /* Didn't match device pattern, return original spec unchanged. */ - device = safe_strdup (g, spec); - } - - return device; -} - -/* XXX Handling of boot.ini in the Perl version was pretty broken. It - * essentially didn't do anything for modern Windows guests. - * Therefore I've omitted all that code. - */ -static int -check_windows_root (guestfs_h *g, struct inspect_fs *fs) -{ - fs->type = OS_TYPE_WINDOWS; - fs->distro = OS_DISTRO_WINDOWS; - - /* Try to find Windows systemroot using some common locations. */ - const char *systemroots[] = - { "/windows", "/winnt", "/win32", "/win" }; - size_t i; - char *systemroot = NULL; - for (i = 0; - systemroot == NULL && i < sizeof systemroots / sizeof systemroots[0]; - ++i) { - systemroot = resolve_windows_path_silently (g, systemroots[i]); - } - - if (!systemroot) { - error (g, _("cannot resolve Windows %%SYSTEMROOT%%")); - return -1; - } - - if (g->verbose) - fprintf (stderr, "windows %%SYSTEMROOT%% = %s", systemroot); - - /* Freed by guestfs___free_inspect_info. */ - fs->windows_systemroot = systemroot; - - if (check_windows_arch (g, fs) == -1) - return -1; - - if (check_windows_registry (g, fs) == -1) - return -1; - - check_package_format (g, fs); - check_package_management (g, fs); - - return 0; -} - -static int -check_windows_arch (guestfs_h *g, struct inspect_fs *fs) -{ - size_t len = strlen (fs->windows_systemroot) + 32; - char cmd_exe[len]; - snprintf (cmd_exe, len, "%s/system32/cmd.exe", fs->windows_systemroot); - - char *cmd_exe_path = resolve_windows_path_silently (g, cmd_exe); - if (!cmd_exe_path) - return 0; - - char *arch = guestfs_file_architecture (g, cmd_exe_path); - free (cmd_exe_path); - - if (arch) - fs->arch = arch; /* freed by guestfs___free_inspect_info */ - - return 0; -} - -/* At the moment, pull just the ProductName and version numbers from - * the registry. In future there is a case for making many more - * registry fields available to callers. - */ -static int -check_windows_registry (guestfs_h *g, struct inspect_fs *fs) -{ - TMP_TEMPLATE_ON_STACK (dir); -#define dir_len (strlen (dir)) -#define software_hive_len (dir_len + 16) - char software_hive[software_hive_len]; -#define cmd_len (dir_len + 16) - char cmd[cmd_len]; - - size_t len = strlen (fs->windows_systemroot) + 64; - char software[len]; - snprintf (software, len, "%s/system32/config/software", - fs->windows_systemroot); - - char *software_path = resolve_windows_path_silently (g, software); - if (!software_path) - /* If the software hive doesn't exist, just accept that we cannot - * find product_name etc. - */ - return 0; - - int ret = -1; - hive_h *h = NULL; - hive_value_h *values = NULL; - - if (mkdtemp (dir) == NULL) { - perrorf (g, "mkdtemp"); - goto out; - } - - snprintf (software_hive, software_hive_len, "%s/software", dir); - - if (guestfs_download (g, software_path, software_hive) == -1) - goto out; - - h = hivex_open (software_hive, g->verbose ? HIVEX_OPEN_VERBOSE : 0); - if (h == NULL) { - perrorf (g, "hivex_open"); - goto out; - } - - hive_node_h node = hivex_root (h); - const char *hivepath[] = - { "Microsoft", "Windows NT", "CurrentVersion" }; - size_t i; - for (i = 0; - node != 0 && i < sizeof hivepath / sizeof hivepath[0]; - ++i) { - node = hivex_node_get_child (h, node, hivepath[i]); - } - - if (node == 0) { - perrorf (g, "hivex: cannot locate HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion"); - goto out; - } - - values = hivex_node_values (h, node); - - for (i = 0; values[i] != 0; ++i) { - char *key = hivex_value_key (h, values[i]); - if (key == NULL) { - perrorf (g, "hivex_value_key"); - goto out; - } - - if (STRCASEEQ (key, "ProductName")) { - fs->product_name = hivex_value_string (h, values[i]); - if (!fs->product_name) { - perrorf (g, "hivex_value_string"); - free (key); - goto out; - } - } - else if (STRCASEEQ (key, "CurrentVersion")) { - char *version = hivex_value_string (h, values[i]); - if (!version) { - perrorf (g, "hivex_value_string"); - free (key); - goto out; - } - char *major, *minor; - if (match2 (g, version, re_windows_version, &major, &minor)) { - fs->major_version = parse_unsigned_int (g, major); - free (major); - if (fs->major_version == -1) { - free (minor); - free (key); - free (version); - goto out; - } - fs->minor_version = parse_unsigned_int (g, minor); - free (minor); - if (fs->minor_version == -1) { - free (key); - free (version); - return -1; - } - } - - free (version); - } - - free (key); - } - - ret = 0; - - out: - if (h) hivex_close (h); - free (values); - free (software_path); - - /* Free up the temporary directory. Note the directory name cannot - * contain shell meta-characters because of the way it was - * constructed above. - */ - snprintf (cmd, cmd_len, "rm -rf %s", dir); - ignore_value (system (cmd)); -#undef dir_len -#undef software_hive_len -#undef cmd_len - - return ret; -} - -static char * -resolve_windows_path_silently (guestfs_h *g, const char *path) -{ - guestfs_error_handler_cb old_error_cb = g->error_cb; - g->error_cb = NULL; - char *ret = guestfs_case_sensitive_path (g, path); - g->error_cb = old_error_cb; - return ret; -} - -static int -extend_fses (guestfs_h *g) -{ - size_t n = g->nr_fses + 1; - struct inspect_fs *p; - - p = realloc (g->fses, n * sizeof (struct inspect_fs)); - if (p == NULL) { - perrorf (g, "realloc"); - return -1; - } - - g->fses = p; - g->nr_fses = n; - - memset (&g->fses[n-1], 0, sizeof (struct inspect_fs)); - - return 0; -} - -/* Parse small, unsigned ints, as used in version numbers. */ -static int -parse_unsigned_int (guestfs_h *g, const char *str) -{ - long ret; - int r = xstrtol (str, NULL, 10, &ret, ""); - if (r != LONGINT_OK) { - error (g, "could not parse integer in version number: %s", str); - return -1; - } - return ret; -} - -/* At the moment, package format and package management is just a - * simple function of the distro and major_version fields, so these - * can never return an error. We might be cleverer in future. - */ -static void -check_package_format (guestfs_h *g, struct inspect_fs *fs) -{ - switch (fs->distro) { - case OS_DISTRO_FEDORA: - case OS_DISTRO_MEEGO: - case OS_DISTRO_REDHAT_BASED: - case OS_DISTRO_RHEL: - fs->package_format = OS_PACKAGE_FORMAT_RPM; - break; - - case OS_DISTRO_DEBIAN: - case OS_DISTRO_UBUNTU: - fs->package_format = OS_PACKAGE_FORMAT_DEB; - break; - - case OS_DISTRO_ARCHLINUX: - fs->package_format = OS_PACKAGE_FORMAT_PACMAN; - break; - case OS_DISTRO_GENTOO: - fs->package_format = OS_PACKAGE_FORMAT_EBUILD; - break; - case OS_DISTRO_PARDUS: - fs->package_format = OS_PACKAGE_FORMAT_PISI; - break; - - case OS_DISTRO_WINDOWS: - case OS_DISTRO_UNKNOWN: - default: - fs->package_format = OS_PACKAGE_FORMAT_UNKNOWN; - break; - } -} - -static void -check_package_management (guestfs_h *g, struct inspect_fs *fs) -{ - switch (fs->distro) { - case OS_DISTRO_FEDORA: - case OS_DISTRO_MEEGO: - fs->package_management = OS_PACKAGE_MANAGEMENT_YUM; - break; - - case OS_DISTRO_REDHAT_BASED: - case OS_DISTRO_RHEL: - if (fs->major_version >= 5) - fs->package_management = OS_PACKAGE_MANAGEMENT_YUM; - else - fs->package_management = OS_PACKAGE_MANAGEMENT_UP2DATE; - break; - - case OS_DISTRO_DEBIAN: - case OS_DISTRO_UBUNTU: - fs->package_management = OS_PACKAGE_MANAGEMENT_APT; - break; - - case OS_DISTRO_ARCHLINUX: - fs->package_management = OS_PACKAGE_MANAGEMENT_PACMAN; - break; - case OS_DISTRO_GENTOO: - fs->package_management = OS_PACKAGE_MANAGEMENT_PORTAGE; - break; - case OS_DISTRO_PARDUS: - fs->package_management = OS_PACKAGE_MANAGEMENT_PISI; - break; - - case OS_DISTRO_WINDOWS: - case OS_DISTRO_UNKNOWN: - default: - fs->package_management = OS_PACKAGE_MANAGEMENT_UNKNOWN; - break; - } -} - -static struct inspect_fs * -search_for_root (guestfs_h *g, const char *root) -{ - if (g->nr_fses == 0) { - error (g, _("no inspection data: call guestfs_inspect_os first")); - return NULL; - } - - size_t i; - struct inspect_fs *fs; - for (i = 0; i < g->nr_fses; ++i) { - fs = &g->fses[i]; - if (fs->is_root && STREQ (root, fs->device)) - return fs; - } - - error (g, _("%s: root device not found: only call this function with a root device previously returned by guestfs_inspect_os"), - root); - return NULL; -} - char ** guestfs__inspect_get_roots (guestfs_h *g) { @@ -1114,7 +159,7 @@ guestfs__inspect_get_roots (guestfs_h *g) char * guestfs__inspect_get_type (guestfs_h *g, const char *root) { - struct inspect_fs *fs = search_for_root (g, root); + struct inspect_fs *fs = guestfs___search_for_root (g, root); if (!fs) return NULL; @@ -1122,6 +167,7 @@ guestfs__inspect_get_type (guestfs_h *g, const char *root) switch (fs->type) { case OS_TYPE_LINUX: ret = safe_strdup (g, "linux"); break; case OS_TYPE_WINDOWS: ret = safe_strdup (g, "windows"); break; + case OS_TYPE_FREEBSD: ret = safe_strdup (g, "freebsd"); break; case OS_TYPE_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break; } @@ -1131,7 +177,7 @@ guestfs__inspect_get_type (guestfs_h *g, const char *root) char * guestfs__inspect_get_arch (guestfs_h *g, const char *root) { - struct inspect_fs *fs = search_for_root (g, root); + struct inspect_fs *fs = guestfs___search_for_root (g, root); if (!fs) return NULL; @@ -1141,20 +187,25 @@ guestfs__inspect_get_arch (guestfs_h *g, const char *root) char * guestfs__inspect_get_distro (guestfs_h *g, const char *root) { - struct inspect_fs *fs = search_for_root (g, root); + struct inspect_fs *fs = guestfs___search_for_root (g, root); if (!fs) return NULL; char *ret; switch (fs->distro) { case OS_DISTRO_ARCHLINUX: ret = safe_strdup (g, "archlinux"); break; + case OS_DISTRO_CENTOS: ret = safe_strdup (g, "centos"); break; case OS_DISTRO_DEBIAN: ret = safe_strdup (g, "debian"); break; case OS_DISTRO_FEDORA: ret = safe_strdup (g, "fedora"); break; case OS_DISTRO_GENTOO: ret = safe_strdup (g, "gentoo"); break; + case OS_DISTRO_LINUX_MINT: ret = safe_strdup (g, "linuxmint"); break; + case OS_DISTRO_MANDRIVA: ret = safe_strdup (g, "mandriva"); break; case OS_DISTRO_MEEGO: ret = safe_strdup (g, "meego"); break; case OS_DISTRO_PARDUS: ret = safe_strdup (g, "pardus"); break; case OS_DISTRO_REDHAT_BASED: ret = safe_strdup (g, "redhat-based"); break; case OS_DISTRO_RHEL: ret = safe_strdup (g, "rhel"); break; + case OS_DISTRO_SCIENTIFIC_LINUX: ret = safe_strdup (g, "scientificlinux"); break; + case OS_DISTRO_SLACKWARE: ret = safe_strdup (g, "slackware"); break; case OS_DISTRO_WINDOWS: ret = safe_strdup (g, "windows"); break; case OS_DISTRO_UBUNTU: ret = safe_strdup (g, "ubuntu"); break; case OS_DISTRO_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break; @@ -1166,7 +217,7 @@ guestfs__inspect_get_distro (guestfs_h *g, const char *root) int guestfs__inspect_get_major_version (guestfs_h *g, const char *root) { - struct inspect_fs *fs = search_for_root (g, root); + struct inspect_fs *fs = guestfs___search_for_root (g, root); if (!fs) return -1; @@ -1176,7 +227,7 @@ guestfs__inspect_get_major_version (guestfs_h *g, const char *root) int guestfs__inspect_get_minor_version (guestfs_h *g, const char *root) { - struct inspect_fs *fs = search_for_root (g, root); + struct inspect_fs *fs = guestfs___search_for_root (g, root); if (!fs) return -1; @@ -1186,7 +237,7 @@ guestfs__inspect_get_minor_version (guestfs_h *g, const char *root) char * guestfs__inspect_get_product_name (guestfs_h *g, const char *root) { - struct inspect_fs *fs = search_for_root (g, root); + struct inspect_fs *fs = guestfs___search_for_root (g, root); if (!fs) return NULL; @@ -1194,9 +245,19 @@ guestfs__inspect_get_product_name (guestfs_h *g, const char *root) } char * +guestfs__inspect_get_product_variant (guestfs_h *g, const char *root) +{ + struct inspect_fs *fs = guestfs___search_for_root (g, root); + if (!fs) + return NULL; + + return safe_strdup (g, fs->product_variant ? : "unknown"); +} + +char * guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root) { - struct inspect_fs *fs = search_for_root (g, root); + struct inspect_fs *fs = guestfs___search_for_root (g, root); if (!fs) return NULL; @@ -1208,10 +269,73 @@ guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root) return safe_strdup (g, fs->windows_systemroot); } +char * +guestfs__inspect_get_windows_current_control_set (guestfs_h *g, + const char *root) +{ + struct inspect_fs *fs = guestfs___search_for_root (g, root); + if (!fs) + return NULL; + + if (!fs->windows_current_control_set) { + error (g, _("not a Windows guest, or CurrentControlSet could not be determined")); + return NULL; + } + + return safe_strdup (g, fs->windows_current_control_set); +} + +char * +guestfs__inspect_get_format (guestfs_h *g, const char *root) +{ + struct inspect_fs *fs = guestfs___search_for_root (g, root); + if (!fs) + return NULL; + + char *ret; + switch (fs->format) { + case OS_FORMAT_INSTALLED: ret = safe_strdup (g, "installed"); break; + case OS_FORMAT_INSTALLER: ret = safe_strdup (g, "installer"); break; + case OS_FORMAT_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break; + } + + return ret; +} + +int +guestfs__inspect_is_live (guestfs_h *g, const char *root) +{ + struct inspect_fs *fs = guestfs___search_for_root (g, root); + if (!fs) + return -1; + + return fs->is_live_disk; +} + +int +guestfs__inspect_is_netinst (guestfs_h *g, const char *root) +{ + struct inspect_fs *fs = guestfs___search_for_root (g, root); + if (!fs) + return -1; + + return fs->is_netinst_disk; +} + +int +guestfs__inspect_is_multipart (guestfs_h *g, const char *root) +{ + struct inspect_fs *fs = guestfs___search_for_root (g, root); + if (!fs) + return -1; + + return fs->is_multipart_disk; +} + char ** guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root) { - struct inspect_fs *fs = search_for_root (g, root); + struct inspect_fs *fs = guestfs___search_for_root (g, root); if (!fs) return NULL; @@ -1254,7 +378,7 @@ guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root) char ** guestfs__inspect_get_filesystems (guestfs_h *g, const char *root) { - struct inspect_fs *fs = search_for_root (g, root); + struct inspect_fs *fs = guestfs___search_for_root (g, root); if (!fs) return NULL; @@ -1281,10 +405,46 @@ guestfs__inspect_get_filesystems (guestfs_h *g, const char *root) return ret; } +char ** +guestfs__inspect_get_drive_mappings (guestfs_h *g, const char *root) +{ + char **ret; + size_t i, count; + struct inspect_fs *fs; + + fs = guestfs___search_for_root (g, root); + if (!fs) + return NULL; + + /* If no drive mappings, return an empty hashtable. */ + if (!fs->drive_mappings) + count = 0; + else { + for (count = 0; fs->drive_mappings[count] != NULL; count++) + ; + } + + ret = calloc (count+1, sizeof (char *)); + if (ret == NULL) { + perrorf (g, "calloc"); + return NULL; + } + + /* We need to make a deep copy of the hashtable since the caller + * will free it. + */ + for (i = 0; i < count; ++i) + ret[i] = safe_strdup (g, fs->drive_mappings[i]); + + ret[count] = NULL; + + return ret; +} + char * guestfs__inspect_get_package_format (guestfs_h *g, const char *root) { - struct inspect_fs *fs = search_for_root (g, root); + struct inspect_fs *fs = guestfs___search_for_root (g, root); if (!fs) return NULL; @@ -1307,7 +467,7 @@ guestfs__inspect_get_package_format (guestfs_h *g, const char *root) char * guestfs__inspect_get_package_management (guestfs_h *g, const char *root) { - struct inspect_fs *fs = search_for_root (g, root); + struct inspect_fs *fs = guestfs___search_for_root (g, root); if (!fs) return NULL; @@ -1319,6 +479,7 @@ guestfs__inspect_get_package_management (guestfs_h *g, const char *root) case OS_PACKAGE_MANAGEMENT_PACMAN: ret = safe_strdup (g, "pacman"); break; case OS_PACKAGE_MANAGEMENT_PORTAGE: ret = safe_strdup (g, "portage"); break; case OS_PACKAGE_MANAGEMENT_PISI: ret = safe_strdup (g, "pisi"); break; + case OS_PACKAGE_MANAGEMENT_URPMI: ret = safe_strdup (g, "urpmi"); break; case OS_PACKAGE_MANAGEMENT_UNKNOWN: default: ret = safe_strdup (g, "unknown"); @@ -1328,6 +489,103 @@ guestfs__inspect_get_package_management (guestfs_h *g, const char *root) return ret; } +char * +guestfs__inspect_get_hostname (guestfs_h *g, const char *root) +{ + struct inspect_fs *fs = guestfs___search_for_root (g, root); + if (!fs) + return NULL; + + return safe_strdup (g, fs->hostname ? : "unknown"); +} + +/* Download a guest file to a local temporary file. The file is + * downloaded into g->tmpdir, unless it already exists in g->tmpdir. + * The final name will be g->tmpdir + "/" + basename. Refuse to + * download the guest file if it is larger than max_size. The caller + * does not need to delete the temporary file after use: it will be + * deleted when the handle is cleaned up. + */ +int +guestfs___download_to_tmp (guestfs_h *g, const char *filename, + const char *basename, int64_t max_size) +{ + int tmpdirfd, fd, r = -1; + char buf[32]; + int64_t size; + + tmpdirfd = open (g->tmpdir, O_RDONLY); + if (tmpdirfd == -1) { + perrorf (g, _("%s: temporary directory not found"), g->tmpdir); + return -1; + } + + /* If the file has already been downloaded, return. */ + if (faccessat (tmpdirfd, basename, R_OK, 0) == 0) { + r = 0; + goto out; + } + + /* Check size of remote file. */ + size = guestfs_filesize (g, filename); + if (size == -1) + /* guestfs_filesize failed and has already set error in handle */ + goto out; + if (size > max_size) { + error (g, _("size of %s is unreasonably large (%" PRIi64 " bytes)"), + filename, size); + goto out; + } + + fd = openat (tmpdirfd, basename, O_WRONLY|O_CREAT|O_TRUNC|O_NOCTTY, 0600); + if (fd == -1) { + perrorf (g, "openat: %s/%s", g->tmpdir, basename); + goto out; + } + + snprintf (buf, sizeof buf, "/dev/fd/%d", fd); + + if (guestfs_download (g, filename, buf) == -1) { + unlinkat (tmpdirfd, basename, 0); + close (fd); + goto out; + } + + if (close (fd) == -1) { + perrorf (g, "close: %s/%s", g->tmpdir, basename); + unlinkat (tmpdirfd, basename, 0); + goto out; + } + + r = 0; + out: + if (tmpdirfd >= 0) + close (tmpdirfd); + + return r; +} + +struct inspect_fs * +guestfs___search_for_root (guestfs_h *g, const char *root) +{ + if (g->nr_fses == 0) { + error (g, _("no inspection data: call guestfs_inspect_os first")); + return NULL; + } + + size_t i; + struct inspect_fs *fs; + for (i = 0; i < g->nr_fses; ++i) { + fs = &g->fses[i]; + if (fs->is_root && STREQ (root, fs->device)) + return fs; + } + + error (g, _("%s: root device not found: only call this function with a root device previously returned by guestfs_inspect_os"), + root); + return NULL; +} + #else /* no PCRE or hivex at compile time */ /* XXX These functions should be in an optgroup. */ @@ -1385,11 +643,24 @@ guestfs__inspect_get_product_name (guestfs_h *g, const char *root) } char * +guestfs__inspect_get_product_variant (guestfs_h *g, const char *root) +{ + NOT_IMPL(NULL); +} + +char * guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root) { NOT_IMPL(NULL); } +char * +guestfs__inspect_get_windows_current_control_set (guestfs_h *g, + const char *root) +{ + NOT_IMPL(NULL); +} + char ** guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root) { @@ -1402,6 +673,12 @@ guestfs__inspect_get_filesystems (guestfs_h *g, const char *root) NOT_IMPL(NULL); } +char ** +guestfs__inspect_get_drive_mappings (guestfs_h *g, const char *root) +{ + NOT_IMPL(NULL); +} + char * guestfs__inspect_get_package_format (guestfs_h *g, const char *root) { @@ -1414,6 +691,36 @@ guestfs__inspect_get_package_management (guestfs_h *g, const char *root) NOT_IMPL(NULL); } +char * +guestfs__inspect_get_hostname (guestfs_h *g, const char *root) +{ + NOT_IMPL(NULL); +} + +char * +guestfs__inspect_get_format (guestfs_h *g, const char *root) +{ + NOT_IMPL(NULL); +} + +int +guestfs__inspect_is_live (guestfs_h *g, const char *root) +{ + NOT_IMPL(-1); +} + +int +guestfs__inspect_is_netinst (guestfs_h *g, const char *root) +{ + NOT_IMPL(-1); +} + +int +guestfs__inspect_is_multipart (guestfs_h *g, const char *root) +{ + NOT_IMPL(-1); +} + #endif /* no PCRE or hivex at compile time */ void @@ -1423,14 +730,19 @@ guestfs___free_inspect_info (guestfs_h *g) for (i = 0; i < g->nr_fses; ++i) { free (g->fses[i].device); free (g->fses[i].product_name); + free (g->fses[i].product_variant); free (g->fses[i].arch); + free (g->fses[i].hostname); free (g->fses[i].windows_systemroot); + free (g->fses[i].windows_current_control_set); size_t j; for (j = 0; j < g->fses[i].nr_fstab; ++j) { free (g->fses[i].fstab[j].device); free (g->fses[i].fstab[j].mountpoint); } free (g->fses[i].fstab); + if (g->fses[i].drive_mappings) + guestfs___free_string_list (g->fses[i].drive_mappings); } free (g->fses); g->nr_fses = 0; @@ -1454,101 +766,3 @@ guestfs___feature_available (guestfs_h *g, const char *feature) return r == 0 ? 1 : 0; } - -#ifdef HAVE_PCRE - -/* Match a regular expression which contains no captures. Returns - * true if it matches or false if it doesn't. - */ -int -guestfs___match (guestfs_h *g, const char *str, const pcre *re) -{ - size_t len = strlen (str); - int vec[30], r; - - r = pcre_exec (re, NULL, str, len, 0, 0, vec, sizeof vec / sizeof vec[0]); - if (r == PCRE_ERROR_NOMATCH) - return 0; - if (r != 1) { - /* Internal error -- should not happen. */ - fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n", - __FILE__, __func__, r, str); - return 0; - } - - return 1; -} - -/* Match a regular expression which contains exactly one capture. If - * the string matches, return the capture, otherwise return NULL. The - * caller must free the result. - */ -char * -guestfs___match1 (guestfs_h *g, const char *str, const pcre *re) -{ - size_t len = strlen (str); - int vec[30], r; - - r = pcre_exec (re, NULL, str, len, 0, 0, vec, sizeof vec / sizeof vec[0]); - if (r == PCRE_ERROR_NOMATCH) - return NULL; - if (r != 2) { - /* Internal error -- should not happen. */ - fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n", - __FILE__, __func__, r, str); - return NULL; - } - - return safe_strndup (g, &str[vec[2]], vec[3]-vec[2]); -} - -/* Match a regular expression which contains exactly two captures. */ -int -guestfs___match2 (guestfs_h *g, const char *str, const pcre *re, - char **ret1, char **ret2) -{ - size_t len = strlen (str); - int vec[30], r; - - r = pcre_exec (re, NULL, str, len, 0, 0, vec, 30); - if (r == PCRE_ERROR_NOMATCH) - return 0; - if (r != 3) { - /* Internal error -- should not happen. */ - fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n", - __FILE__, __func__, r, str); - return 0; - } - - *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]); - *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]); - - return 1; -} - -/* Match a regular expression which contains exactly three captures. */ -int -guestfs___match3 (guestfs_h *g, const char *str, const pcre *re, - char **ret1, char **ret2, char **ret3) -{ - size_t len = strlen (str); - int vec[30], r; - - r = pcre_exec (re, NULL, str, len, 0, 0, vec, 30); - if (r == PCRE_ERROR_NOMATCH) - return 0; - if (r != 4) { - /* Internal error -- should not happen. */ - fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n", - __FILE__, __func__, r, str); - return 0; - } - - *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]); - *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]); - *ret3 = safe_strndup (g, &str[vec[6]], vec[7]-vec[6]); - - return 1; -} - -#endif /* HAVE_PCRE */