X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=daemon%2Fdevsparts.c;h=440739fd66e89b7006be120f37a1849a197cc063;hb=31fba8d8033216f8a288e75fe3f575b73b9ef925;hp=52a6d304d5afb6a1e45c33eb9ab25d723b59a46f;hpb=7c020a14802255c966b2b402b983551b86a08bba;p=libguestfs.git

diff --git a/daemon/devsparts.c b/daemon/devsparts.c
index 52a6d30..440739f 100644
--- 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;
+}