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authorRichard W.M. Jones <rjones@redhat.com>2010-11-13 14:42:06 +0000
committerRichard W.M. Jones <rjones@redhat.com>2010-11-13 14:42:06 +0000
commit79b202ca26226e0a95e3f04ac7ff91e9eb918b48 (patch)
tree0d9b880185d353bdb462656a9a69a6dbb698c54f /src/inspect.c
parenta5fd85e7392b589d9d90ab515ad3e4bd1befd874 (diff)
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inspect: Inspection support for FreeBSD.
This adds inspection support for FreeBSD. However this is not quite enough to allow guestfish -i freebsd.img to work, because guestfish will try to mount the filesystems, which cannot be done because Linux requires special mount options for the Universal Filesystem (UFS) used by *BSD. Nevertheless you can manually run the same commands.
Diffstat (limited to 'src/inspect.c')
-rw-r--r--src/inspect.c122
1 files changed, 111 insertions, 11 deletions
diff --git a/src/inspect.c b/src/inspect.c
index 2f543b58..58a49a64 100644
--- a/src/inspect.c
+++ b/src/inspect.c
@@ -57,6 +57,8 @@ static pcre *re_rhel_no_minor;
static pcre *re_major_minor;
static pcre *re_aug_seq;
static pcre *re_xdev;
+static pcre *re_first_partition;
+static pcre *re_freebsd;
static pcre *re_windows_version;
static void compile_regexps (void) __attribute__((constructor));
@@ -87,6 +89,8 @@ compile_regexps (void)
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_first_partition, "^/dev/(?:h|s|v)d.1$", 0);
+ COMPILE (re_freebsd, "^/dev/ad(\\d+)s(\\d+)([a-z])$", 0);
COMPILE (re_windows_version, "^(\\d+)\\.(\\d+)", 0);
}
@@ -100,6 +104,8 @@ free_regexps (void)
pcre_free (re_major_minor);
pcre_free (re_aug_seq);
pcre_free (re_xdev);
+ pcre_free (re_first_partition);
+ pcre_free (re_freebsd);
pcre_free (re_windows_version);
}
@@ -187,6 +193,8 @@ guestfs__inspect_os (guestfs_h *g)
*/
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_freebsd_root (guestfs_h *g, struct inspect_fs *fs);
+static void check_architecture (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);
@@ -266,6 +274,23 @@ check_filesystem (guestfs_h *g, const char *device)
if (guestfs_is_file (g, "/grub/menu.lst") > 0 ||
guestfs_is_file (g, "/grub/grub.conf") > 0)
fs->content = FS_CONTENT_LINUX_BOOT;
+ /* FreeBSD root? */
+ else if (is_dir_etc &&
+ is_dir_bin &&
+ guestfs_is_file (g, "/etc/freebsd-update.conf") > 0 &&
+ guestfs_is_file (g, "/etc/fstab") > 0) {
+ /* Ignore /dev/sda1 which is a shadow of the real root filesystem
+ * that is probably /dev/sda5 (see:
+ * http://www.freebsd.org/doc/handbook/disk-organization.html)
+ */
+ if (match (g, device, re_first_partition))
+ return 0;
+
+ fs->is_root = 1;
+ fs->content = FS_CONTENT_FREEBSD_ROOT;
+ if (check_freebsd_root (g, fs) == -1)
+ return -1;
+ }
/* Linux root? */
else if (is_dir_etc &&
is_dir_bin &&
@@ -528,9 +553,57 @@ check_linux_root (guestfs_h *g, struct inspect_fs *fs)
check_package_management (g, fs);
/* Determine the architecture. */
+ check_architecture (g, fs);
+
+ /* 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.
+ */
+ if (check_fstab (g, fs) == -1)
+ return -1;
+
+ return 0;
+}
+
+/* The currently mounted device is known to be a FreeBSD root. */
+static int
+check_freebsd_root (guestfs_h *g, struct inspect_fs *fs)
+{
+ int r;
+
+ fs->type = OS_TYPE_FREEBSD;
+
+ /* FreeBSD has no authoritative version file. The version number is
+ * in /etc/motd, which the system administrator might edit, but
+ * we'll use that anyway.
+ */
+
+ if (guestfs_exists (g, "/etc/motd") > 0) {
+ if (parse_release_file (g, fs, "/etc/motd") == -1)
+ return -1;
+
+ if (parse_major_minor (g, fs) == -1)
+ return -1;
+ }
+
+ /* Determine the architecture. */
+ check_architecture (g, fs);
+
+ /* We already know /etc/fstab exists because it's part of the test above. */
+ if (check_fstab (g, fs) == -1)
+ return -1;
+
+ return 0;
+}
+
+static void
+check_architecture (guestfs_h *g, struct inspect_fs *fs)
+{
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. */
@@ -548,13 +621,16 @@ check_linux_root (guestfs_h *g, struct inspect_fs *fs)
}
}
}
+}
- /* 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")?
- */
+static int check_fstab_aug_open (guestfs_h *g, struct inspect_fs *fs);
+
+static int
+check_fstab (guestfs_h *g, struct inspect_fs *fs)
+{
+ int r;
+
+ /* XXX What if !feature_available (g, "augeas")? */
if (guestfs_aug_init (g, "/", 16|32) == -1)
return -1;
@@ -562,7 +638,7 @@ check_linux_root (guestfs_h *g, struct inspect_fs *fs)
guestfs_aug_rm (g, "/augeas/load//incl[. != \"/etc/fstab\"]");
guestfs_aug_load (g);
- r = check_fstab (g, fs);
+ r = check_fstab_aug_open (g, fs);
guestfs_aug_close (g);
if (r == -1)
return -1;
@@ -571,7 +647,7 @@ check_linux_root (guestfs_h *g, struct inspect_fs *fs)
}
static int
-check_fstab (guestfs_h *g, struct inspect_fs *fs)
+check_fstab_aug_open (guestfs_h *g, struct inspect_fs *fs)
{
char **lines = guestfs_aug_ls (g, "/files/etc/fstab");
if (lines == NULL)
@@ -708,6 +784,7 @@ resolve_fstab_device (guestfs_h *g, const char *spec)
{
char *a1;
char *device = NULL;
+ char *bsddisk, *bsdslice, *bsdpart;
if (STRPREFIX (spec, "/dev/mapper/")) {
/* LVM2 does some strange munging on /dev/mapper paths for VGs and
@@ -741,11 +818,33 @@ resolve_fstab_device (guestfs_h *g, const char *spec)
free (a1);
guestfs___free_string_list (devices);
}
- else {
- /* Didn't match device pattern, return original spec unchanged. */
- device = safe_strdup (g, spec);
+ else if (match3 (g, spec, re_freebsd, &bsddisk, &bsdslice, &bsdpart)) {
+ /* FreeBSD disks are organized quite differently. See:
+ * http://www.freebsd.org/doc/handbook/disk-organization.html
+ * FreeBSD "partitions" are exposed as quasi-extended partitions
+ * numbered from 5 in Linux. I have no idea what happens when you
+ * have multiple "slices" (the FreeBSD term for MBR partitions).
+ */
+ int disk = parse_unsigned_int (g, bsddisk);
+ int slice = parse_unsigned_int (g, bsdslice);
+ int part = bsdpart[0] - 'a' /* counting from 0 */;
+ free (bsddisk);
+ free (bsdslice);
+ free (bsdpart);
+
+ if (disk == -1 || disk > 26 ||
+ slice <= 0 || slice > 1 /* > 4 .. see comment above */ ||
+ part < 0 || part >= 26)
+ goto out;
+
+ device = safe_asprintf (g, "/dev/sd%c%d", disk + 'a', part + 5);
}
+ out:
+ /* Didn't match device pattern, return original spec unchanged. */
+ if (device == NULL)
+ device = safe_strdup (g, spec);
+
return device;
}
@@ -1127,6 +1226,7 @@ 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;
}