tune2fs-l: Add a test.

[libguestfs.git] / daemon / devsparts.c

diff --git a/daemon/devsparts.c b/daemon/devsparts.c
index 52a6d30..440739f 100644 (file)
--- a/daemon/devsparts.c
+++ b/daemon/devsparts.c
@@ -13,7 +13,7 @@
  *
  * 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>
@@ -220,3 +220,28 @@ do_part_to_dev (const char *part)
 
   return r;
 }
+
+int
+do_part_to_partnum (const char *part)
+{
+  int err = 1;
+  size_t n = strlen (part);
+
+  while (n >= 1 && c_isdigit (part[n-1])) {
+    err = 0;
+    n--;
+  }
+
+  if (err) {
+    reply_with_error ("device name is not a partition");
+    return -1;
+  }
+
+  int r;
+  if (sscanf (&part[n], "%d", &r) != 1) {
+    reply_with_error ("could not parse number");
+    return -1;
+  }
+
+  return r;
+}