losetup: remove dependence on minor numbers

The latest kernel supports partitioned loop devices (kernel commit
476a4813cfddf7cf159956cc0e2d3c830c1507e3). Unfortunately, this change
makes minor numbers useless, because mirror number does not match with
loop device name (loop<N>).

We have to follow loop device names only.

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/mount/lomount.c b/mount/lomount.c
index 5cf50f8841c9e418e0fdcd6280c3d713c4ea2b10..6ef143ab66df2a82a949aecbdd42960e8682d854 100644 (file)
--- a/mount/lomount.c
+++ b/mount/lomount.c
@@ -301,6 +301,10 @@ looplist_next(struct looplist *ll)
                                continue;
                        if (m != LOOPMAJOR)
                                continue;
+                       /* unfortunately, real minor numbers needn't to match
+                        * loop<N> device name. We have to follow device name.
+                        */
+                       n = name2minor(1, name);
                        fd = looplist_open_dev(ll, n);
                        if (fd != -1)
                                return fd;