*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <config.h>
#include "daemon.h"
#include "actions.h"
-char *
-do_vfs_type (const char *device)
+static char *
+get_blkid_tag (const char *device, const char *tag)
{
char *out, *err;
int r;
- r = command (&out, &err,
- "blkid", "-o", "value", "-s", "TYPE", device, NULL);
- if (r == -1) {
- reply_with_error ("%s: %s", device, err);
+ r = commandr (&out, &err,
+ "blkid",
+ /* Adding -c option kills all caching, even on RHEL 5. */
+ "-c", "/dev/null",
+ "-o", "value", "-s", tag, device, NULL);
+ if (r != 0 && r != 2) {
+ if (r >= 0)
+ reply_with_error ("%s: %s (blkid returned %d)", device, err, r);
+ else
+ reply_with_error ("%s: %s", device, err);
free (out);
free (err);
return NULL;
free (err);
+ if (r == 2) { /* means UUID etc not found */
+ free (out);
+ out = strdup ("");
+ if (out == NULL)
+ reply_with_perror ("strdup");
+ return out;
+ }
+
/* Trim trailing \n if present. */
size_t len = strlen (out);
if (len > 0 && out[len-1] == '\n')
return out; /* caller frees */
}
+
+char *
+do_vfs_type (const char *device)
+{
+ return get_blkid_tag (device, "TYPE");
+}
+
+char *
+do_vfs_label (const char *device)
+{
+ return get_blkid_tag (device, "LABEL");
+}
+
+char *
+do_vfs_uuid (const char *device)
+{
+ return get_blkid_tag (device, "UUID");
+}
+
+char **
+do_blkid(const char *device)
+{
+ int r;
+ char *out = NULL, *err = NULL;
+ char **lines = NULL;
+
+ char **ret = NULL;
+ int size = 0, alloc = 0;
+
+ r = command (&out, &err,
+ "blkid",
+ /* Adding -c option kills all caching, even on RHEL 5. */
+ "-c", "/dev/null",
+ "-p", "-i", "-o", "export", device, NULL);
+ if (r == -1) {
+ reply_with_error("%s", err);
+ goto error;
+ }
+
+ /* Split the command output into lines */
+ lines = split_lines(out);
+ if (lines == NULL) {
+ reply_with_perror("malloc");
+ goto error;
+ }
+
+ /* Parse the output of blkid -p -i -o export:
+ * UUID=b6d83437-c6b4-4bf0-8381-ef3fc3578590
+ * VERSION=1.0
+ * TYPE=ext2
+ * USAGE=filesystem
+ * MINIMUM_IO_SIZE=512
+ * PHYSICAL_SECTOR_SIZE=512
+ * LOGICAL_SECTOR_SIZE=512
+ * PART_ENTRY_SCHEME=dos
+ * PART_ENTRY_TYPE=0x83
+ * PART_ENTRY_NUMBER=6
+ * PART_ENTRY_OFFSET=642875153
+ * PART_ENTRY_SIZE=104857600
+ * PART_ENTRY_DISK=8:0
+ */
+ for (char **i = lines; *i != NULL; i++) {
+ char *line = *i;
+
+ /* Skip blank lines (shouldn't happen) */
+ if (line[0] == '\0') continue;
+
+ /* Split the line in 2 at the equals sign */
+ char *eq = strchr(line, '=');
+ if (eq) {
+ *eq = '\0'; eq++;
+
+ /* Add the key/value pair to the output */
+ if (add_string(&ret, &size, &alloc, line) == -1 ||
+ add_string(&ret, &size, &alloc, eq) == -1) goto error;
+ } else {
+ fprintf(stderr, "blkid: unexpected blkid output ignored: %s", line);
+ }
+ }
+
+ free(out);
+ free(err);
+ free(lines);
+
+ if (add_string(&ret, &size, &alloc, NULL) == -1) return NULL;
+
+ return ret;
+
+error:
+ free(out);
+ free(err);
+ if (lines) free(lines);
+ if (ret) free_strings(ret);
+
+ return NULL;
+}