}
/* The main inspection code. */
-static int check_for_filesystem_on (guestfs_h *g, const char *device);
+static int check_for_filesystem_on (guestfs_h *g, const char *device, int is_block, int is_partnum);
char **
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 (check_for_filesystem_on (g, devices[i], 1, 0) == -1) {
guestfs___free_string_list (devices);
guestfs___free_inspect_info (g);
return NULL;
}
for (i = 0; partitions[i] != NULL; ++i) {
- if (check_for_filesystem_on (g, partitions[i]) == -1) {
+ if (check_for_filesystem_on (g, partitions[i], 0, i+1) == -1) {
guestfs___free_string_list (partitions);
guestfs___free_inspect_info (g);
return NULL;
}
for (i = 0; lvs[i] != NULL; ++i) {
- if (check_for_filesystem_on (g, lvs[i]) == -1) {
+ if (check_for_filesystem_on (g, lvs[i], 0, 0) == -1) {
guestfs___free_string_list (lvs);
guestfs___free_inspect_info (g);
return NULL;
/* 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_filesystem (guestfs_h *g, const char *device, int is_block, int is_partnum);
static int check_linux_root (guestfs_h *g, struct inspect_fs *fs);
static int check_freebsd_root (guestfs_h *g, struct inspect_fs *fs);
+static int check_installer_root (guestfs_h *g, struct inspect_fs *fs);
static void check_architecture (guestfs_h *g, struct inspect_fs *fs);
static int check_hostname_unix (guestfs_h *g, struct inspect_fs *fs);
static int check_hostname_redhat (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 parse_unsigned_int_ignore_trailing (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 int download_to_tmp (guestfs_h *g, const char *filename, char *localtmp, int64_t max_size);
static int inspect_with_augeas (guestfs_h *g, struct inspect_fs *fs, const char *filename, int (*f) (guestfs_h *, struct inspect_fs *));
static char *first_line_of_file (guestfs_h *g, const char *filename);
+static int first_egrep_of_file (guestfs_h *g, const char *filename, const char *eregex, int iflag, char **ret);
static int
-check_for_filesystem_on (guestfs_h *g, const char *device)
+check_for_filesystem_on (guestfs_h *g, const char *device,
+ int is_block, int is_partnum)
{
/* 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
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");
+ fprintf (stderr, "check_for_filesystem_on: %s %d %d (%s)\n",
+ device, is_block, is_partnum,
+ vfs_type ? vfs_type : "failed to get vfs type");
if (is_swap) {
free (vfs_type);
return 0;
/* Do the rest of the checks. */
- r = check_filesystem (g, device);
+ r = check_filesystem (g, device, is_block, is_partnum);
/* Unmount the filesystem. */
if (guestfs_umount_all (g) == -1)
return r;
}
+/* is_block and is_partnum are just hints: is_block is true if the
+ * filesystem is a whole block device (eg. /dev/sda). is_partnum
+ * is > 0 if the filesystem is a direct partition, and in this case
+ * it is the partition number counting from 1
+ * (eg. /dev/sda1 => is_partnum == 1).
+ */
static int
-check_filesystem (guestfs_h *g, const char *device)
+check_filesystem (guestfs_h *g, const char *device,
+ int is_block, int is_partnum)
{
if (extend_fses (g) == -1)
return -1;
fs->is_root = 1;
fs->content = FS_CONTENT_FREEBSD_ROOT;
+ fs->format = OS_FORMAT_INSTALLED;
if (check_freebsd_root (g, fs) == -1)
return -1;
}
guestfs_is_file (g, "/etc/fstab") > 0) {
fs->is_root = 1;
fs->content = FS_CONTENT_LINUX_ROOT;
+ fs->format = OS_FORMAT_INSTALLED;
if (check_linux_root (g, fs) == -1)
return -1;
}
guestfs_is_file (g, "/ntldr") > 0) {
fs->is_root = 1;
fs->content = FS_CONTENT_WINDOWS_ROOT;
+ fs->format = OS_FORMAT_INSTALLED;
if (check_windows_root (g, fs) == -1)
return -1;
}
+ /* Install CD/disk? Skip these checks if it's not a whole device
+ * (eg. CD) or the first partition (eg. bootable USB key).
+ */
+ else if ((is_block || is_partnum == 1) &&
+ (guestfs_is_file (g, "/isolinux/isolinux.cfg") > 0 ||
+ guestfs_is_dir (g, "/EFI/BOOT") > 0 ||
+ guestfs_is_file (g, "/images/install.img") > 0 ||
+ guestfs_is_dir (g, "/.disk") > 0 ||
+ guestfs_is_file (g, "/.discinfo") > 0 ||
+ guestfs_is_file (g, "/i386/txtsetup.sif") > 0 ||
+ guestfs_is_file (g, "/amd64/txtsetup.sif")) > 0) {
+ fs->is_root = 1;
+ fs->content = FS_CONTENT_INSTALLER;
+ fs->format = OS_FORMAT_INSTALLER;
+ if (check_installer_root (g, fs) == -1)
+ return -1;
+ }
return 0;
}
return 0;
}
+/* Debian/Ubuntu install disks are easy ...
+ *
+ * These files are added by the debian-cd program, and it is worth
+ * looking at the source code to determine exact values, in
+ * particular '/usr/share/debian-cd/tools/start_new_disc'
+ *
+ * XXX Architecture? We could parse it out of the product name
+ * string, but that seems quite hairy. We could look for the names
+ * of packages. Also note that some Debian install disks are
+ * multiarch.
+ */
+static int
+check_debian_installer_root (guestfs_h *g, struct inspect_fs *fs)
+{
+ fs->product_name = first_line_of_file (g, "/.disk/info");
+ if (!fs->product_name)
+ return -1;
+
+ fs->type = OS_TYPE_LINUX;
+ if (STRPREFIX (fs->product_name, "Ubuntu"))
+ fs->distro = OS_DISTRO_UBUNTU;
+ else if (STRPREFIX (fs->product_name, "Debian"))
+ fs->distro = OS_DISTRO_DEBIAN;
+
+ (void) parse_major_minor (g, fs);
+
+ if (guestfs_is_file (g, "/.disk/cd_type") > 0) {
+ char *cd_type = first_line_of_file (g, "/.disk/cd_type");
+ if (!cd_type)
+ return -1;
+
+ if (STRPREFIX (cd_type, "dvd/single") ||
+ STRPREFIX (cd_type, "full_cd/single")) {
+ fs->is_multipart_disk = 0;
+ fs->is_netinst_disk = 0;
+ }
+ else if (STRPREFIX (cd_type, "dvd") ||
+ STRPREFIX (cd_type, "full_cd")) {
+ fs->is_multipart_disk = 1;
+ fs->is_netinst_disk = 0;
+ }
+ else if (STRPREFIX (cd_type, "not_complete")) {
+ fs->is_multipart_disk = 0;
+ fs->is_netinst_disk = 1;
+ }
+
+ free (cd_type);
+ }
+
+ return 0;
+}
+
+/* Take string which must look like "key = value" and find the value.
+ * There may or may not be spaces before and after the equals sign.
+ * This function is used by both check_fedora_installer_root and
+ * check_w2k3_installer_root.
+ */
+static const char *
+find_value (const char *kv)
+{
+ const char *p;
+
+ p = strchr (kv, '=');
+ if (!p)
+ abort ();
+
+ do {
+ ++p;
+ } while (c_isspace (*p));
+
+ return p;
+}
+
+/* Fedora CDs and DVD (not netinst). The /.treeinfo file contains
+ * an initial section somewhat like this:
+ *
+ * [general]
+ * version = 14
+ * arch = x86_64
+ * family = Fedora
+ * variant = Fedora
+ * discnum = 1
+ * totaldiscs = 1
+ */
+static int
+check_fedora_installer_root (guestfs_h *g, struct inspect_fs *fs)
+{
+ char *str;
+ const char *v;
+ int r;
+ int discnum = 0, totaldiscs = 0;
+
+ fs->type = OS_TYPE_LINUX;
+
+ r = first_egrep_of_file (g, "/.treeinfo",
+ "^family = Fedora$", 0, &str);
+ if (r == -1)
+ return -1;
+ if (r > 0) {
+ fs->distro = OS_DISTRO_FEDORA;
+ free (str);
+ }
+
+ r = first_egrep_of_file (g, "/.treeinfo",
+ "^family = Red Hat Enterprise Linux$", 0, &str);
+ if (r == -1)
+ return -1;
+ if (r > 0) {
+ fs->distro = OS_DISTRO_RHEL;
+ free (str);
+ }
+
+ /* XXX should do major.minor before this */
+ r = first_egrep_of_file (g, "/.treeinfo",
+ "^version = [[:digit:]]+", 0, &str);
+ if (r == -1)
+ return -1;
+ if (r > 0) {
+ v = find_value (str);
+ fs->major_version = parse_unsigned_int_ignore_trailing (g, v);
+ free (str);
+ if (fs->major_version == -1)
+ return -1;
+ }
+
+ r = first_egrep_of_file (g, "/.treeinfo",
+ "^arch = [-_[:alnum:]]+$", 0, &str);
+ if (r == -1)
+ return -1;
+ if (r > 0) {
+ v = find_value (str);
+ fs->arch = safe_strdup (g, v);
+ free (str);
+ }
+
+ r = first_egrep_of_file (g, "/.treeinfo",
+ "^discnum = [[:digit:]]+$", 0, &str);
+ if (r == -1)
+ return -1;
+ if (r > 0) {
+ v = find_value (str);
+ discnum = parse_unsigned_int (g, v);
+ free (str);
+ if (discnum == -1)
+ return -1;
+ }
+
+ r = first_egrep_of_file (g, "/.treeinfo",
+ "^totaldiscs = [[:digit:]]+$", 0, &str);
+ if (r == -1)
+ return -1;
+ if (r > 0) {
+ v = find_value (str);
+ totaldiscs = parse_unsigned_int (g, v);
+ free (str);
+ if (totaldiscs == -1)
+ return -1;
+ }
+
+ fs->is_multipart_disk = totaldiscs > 0;
+ /* and what about discnum? */
+
+ return 0;
+}
+
+/* Linux with /isolinux/isolinux.cfg.
+ *
+ * This file is not easily parsable so we have to do our best.
+ * Look for the "menu title" line which contains:
+ * menu title Welcome to Fedora 14! # since at least Fedora 10
+ * menu title Welcome to Red Hat Enterprise Linux 6.0!
+ */
+static int
+check_isolinux_installer_root (guestfs_h *g, struct inspect_fs *fs)
+{
+ char *str;
+ int r;
+
+ fs->type = OS_TYPE_LINUX;
+
+ r = first_egrep_of_file (g, "/isolinux/isolinux.cfg",
+ "^menu title Welcome to Fedora [[:digit:]]+",
+ 0, &str);
+ if (r == -1)
+ return -1;
+ if (r > 0) {
+ fs->distro = OS_DISTRO_FEDORA;
+ fs->major_version = parse_unsigned_int_ignore_trailing (g, &str[29]);
+ free (str);
+ if (fs->major_version == -1)
+ return -1;
+ }
+
+ /* XXX parse major.minor */
+ r = first_egrep_of_file (g, "/isolinux/isolinux.cfg",
+ "^menu title Welcome to Red Hat Enterprise Linux [[:digit:]]+",
+ 0, &str);
+ if (r == -1)
+ return -1;
+ if (r > 0) {
+ fs->distro = OS_DISTRO_RHEL;
+ fs->major_version = parse_unsigned_int_ignore_trailing (g, &str[47]);
+ free (str);
+ if (fs->major_version == -1)
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Windows 2003 and similar versions.
+ *
+ * NB: txtsetup file contains Windows \r\n line endings, which guestfs_grep
+ * does not remove. We have to remove them by hand here.
+ */
+static void
+trim_cr (char *str)
+{
+ size_t n = strlen (str);
+ if (n > 0 && str[n-1] == '\r')
+ str[n-1] = '\0';
+}
+
+static void
+trim_quot (char *str)
+{
+ size_t n = strlen (str);
+ if (n > 0 && str[n-1] == '"')
+ str[n-1] = '\0';
+}
+
+static int
+check_w2k3_installer_root (guestfs_h *g, struct inspect_fs *fs,
+ const char *txtsetup)
+{
+ char *str;
+ const char *v;
+ int r;
+
+ fs->type = OS_TYPE_WINDOWS;
+ fs->distro = OS_DISTRO_WINDOWS;
+
+ r = first_egrep_of_file (g, txtsetup,
+ "^productname[[:space:]]*=[[:space:]]*\"", 1, &str);
+ if (r == -1)
+ return -1;
+ if (r > 0) {
+ trim_cr (str);
+ trim_quot (str);
+ v = find_value (str);
+ fs->product_name = safe_strdup (g, v+1);
+ free (str);
+ }
+
+ r = first_egrep_of_file (g, txtsetup,
+ "^majorversion[[:space:]]*=[[:space:]]*[[:digit:]]+",
+ 1, &str);
+ if (r == -1)
+ return -1;
+ if (r > 0) {
+ trim_cr (str);
+ v = find_value (str);
+ fs->major_version = parse_unsigned_int_ignore_trailing (g, v);
+ free (str);
+ if (fs->major_version == -1)
+ return -1;
+ }
+
+ r = first_egrep_of_file (g, txtsetup,
+ "^minorversion[[:space:]]*=[[:space:]]*[[:digit:]]+",
+ 1, &str);
+ if (r == -1)
+ return -1;
+ if (r > 0) {
+ trim_cr (str);
+ v = find_value (str);
+ fs->minor_version = parse_unsigned_int_ignore_trailing (g, v);
+ free (str);
+ if (fs->minor_version == -1)
+ return -1;
+ }
+
+ /* This is the windows systemroot that would be chosen on
+ * installation by default, although not necessarily the one that
+ * the user will finally choose.
+ */
+ r = first_egrep_of_file (g, txtsetup, "^defaultpath[[:space:]]*=[[:space:]]*",
+ 1, &str);
+ if (r == -1)
+ return -1;
+ if (r > 0) {
+ trim_cr (str);
+ v = find_value (str);
+ fs->windows_systemroot = safe_strdup (g, v);
+ free (str);
+ }
+
+ return 0;
+}
+
+/* The currently mounted device is very likely to be an installer. */
+static int
+check_installer_root (guestfs_h *g, struct inspect_fs *fs)
+{
+ /* The presence of certain files indicates a live CD.
+ *
+ * XXX Fedora netinst contains a ~120MB squashfs called
+ * /images/install.img. However this is not a live CD (unlike the
+ * Fedora live CDs which contain the same, but larger file). We
+ * need to unpack this and look inside to tell the difference.
+ */
+ if (guestfs_is_file (g, "/casper/filesystem.squashfs") > 0)
+ fs->is_live_disk = 1;
+
+ /* Debian/Ubuntu. */
+ if (guestfs_is_file (g, "/.disk/info") > 0) {
+ if (check_debian_installer_root (g, fs) == -1)
+ return -1;
+ }
+
+ /* Fedora CDs and DVD (not netinst). */
+ else if (guestfs_is_file (g, "/.treeinfo") > 0) {
+ if (check_fedora_installer_root (g, fs) == -1)
+ return -1;
+ }
+
+ /* Linux with /isolinux/isolinux.cfg. */
+ else if (guestfs_is_file (g, "/isolinux/isolinux.cfg") > 0) {
+ if (check_isolinux_installer_root (g, fs) == -1)
+ return -1;
+ }
+
+ /* Windows 2003 64 bit */
+ else if (guestfs_is_file (g, "/amd64/txtsetup.sif") > 0) {
+ fs->arch = safe_strdup (g, "x86_64");
+ if (check_w2k3_installer_root (g, fs, "/amd64/txtsetup.sif") == -1)
+ return -1;
+ }
+
+ /* Windows 2003 32 bit */
+ else if (guestfs_is_file (g, "/i386/txtsetup.sif") > 0) {
+ fs->arch = safe_strdup (g, "i386");
+ if (check_w2k3_installer_root (g, fs, "/i386/txtsetup.sif") == -1)
+ return -1;
+ }
+
+ return 0;
+}
+
static void
check_architecture (guestfs_h *g, struct inspect_fs *fs)
{
return ret;
}
+/* Like parse_unsigned_int, but ignore trailing stuff. */
+static int
+parse_unsigned_int_ignore_trailing (guestfs_h *g, const char *str)
+{
+ long ret;
+ int r = xstrtol (str, NULL, 10, &ret, NULL);
+ 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.
return safe_strdup (g, fs->windows_systemroot);
}
+char *
+guestfs__inspect_get_format (guestfs_h *g, const char *root)
+{
+ struct inspect_fs *fs = 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 = 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 = 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 = 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 guestfs_application_list *ret = NULL;
- switch (fs->type) {
- case OS_TYPE_LINUX:
- switch (fs->package_format) {
- case OS_PACKAGE_FORMAT_RPM:
+ /* Presently we can only list applications for installed disks. It
+ * is possible in future to get lists of packages from installers.
+ */
+ if (fs->format == OS_FORMAT_INSTALLED) {
+ switch (fs->type) {
+ case OS_TYPE_LINUX:
+ switch (fs->package_format) {
+ case OS_PACKAGE_FORMAT_RPM:
#ifdef DB_DUMP
- ret = list_applications_rpm (g, fs);
- if (ret == NULL)
- return NULL;
+ ret = list_applications_rpm (g, fs);
+ if (ret == NULL)
+ return NULL;
#endif
+ break;
+
+ case OS_PACKAGE_FORMAT_DEB:
+ ret = list_applications_deb (g, fs);
+ if (ret == NULL)
+ return NULL;
+ break;
+
+ case OS_PACKAGE_FORMAT_PACMAN:
+ case OS_PACKAGE_FORMAT_EBUILD:
+ case OS_PACKAGE_FORMAT_PISI:
+ case OS_PACKAGE_FORMAT_UNKNOWN:
+ default:
+ /* nothing - keep GCC happy */;
+ }
break;
- case OS_PACKAGE_FORMAT_DEB:
- ret = list_applications_deb (g, fs);
+ case OS_TYPE_WINDOWS:
+ ret = list_applications_windows (g, fs);
if (ret == NULL)
return NULL;
break;
- case OS_PACKAGE_FORMAT_PACMAN:
- case OS_PACKAGE_FORMAT_EBUILD:
- case OS_PACKAGE_FORMAT_PISI:
- case OS_PACKAGE_FORMAT_UNKNOWN:
+ case OS_TYPE_FREEBSD:
+ case OS_TYPE_UNKNOWN:
default:
/* nothing - keep GCC happy */;
}
- break;
-
- case OS_TYPE_WINDOWS:
- ret = list_applications_windows (g, fs);
- if (ret == NULL)
- return NULL;
- break;
-
- case OS_TYPE_FREEBSD:
- case OS_TYPE_UNKNOWN:
- default:
- /* nothing - keep GCC happy */;
}
if (ret == NULL) {
return ret;
}
+/* Get the first matching line (using guestfs_egrep{,i}) of a small file,
+ * without any trailing newline character.
+ *
+ * Returns: 1 = returned a line (in *ret)
+ * 0 = no match
+ * -1 = error
+ */
+static int
+first_egrep_of_file (guestfs_h *g, const char *filename,
+ const char *eregex, int iflag, char **ret)
+{
+ char **lines;
+ int64_t size;
+ size_t i;
+
+ /* Don't trust guestfs_egrep not to break with very large files.
+ * Check the file size is something reasonable first.
+ */
+ size = guestfs_filesize (g, filename);
+ if (size == -1)
+ /* guestfs_filesize failed and has already set error in handle */
+ return -1;
+ if (size > MAX_SMALL_FILE_SIZE) {
+ error (g, _("size of %s is unreasonably large (%" PRIi64 " bytes)"),
+ filename, size);
+ return -1;
+ }
+
+ lines = (!iflag ? guestfs_egrep : guestfs_egrepi) (g, eregex, filename);
+ if (lines == NULL)
+ return -1;
+ if (lines[0] == NULL) {
+ guestfs___free_string_list (lines);
+ return 0;
+ }
+
+ *ret = lines[0]; /* caller frees */
+
+ /* free up any other matches and the array itself */
+ for (i = 1; lines[i] != NULL; ++i)
+ free (lines[i]);
+ free (lines);
+
+ return 1;
+}
+
#else /* no PCRE or hivex at compile time */
/* XXX These functions should be in an optgroup. */
git.annexia.org / libguestfs.git / commitdiff