+/* 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;
+}
+
git.annexia.org / libguestfs.git / commitdiff