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-rw-r--r--libmount/src/context_umount.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/libmount/src/context_umount.c b/libmount/src/context_umount.c
index 79b6237..bf70ed2 100644
--- a/libmount/src/context_umount.c
+++ b/libmount/src/context_umount.c
@@ -267,6 +267,9 @@ static int lookup_umount_fs_by_statfs(struct libmnt_context *cxt, const char *tg
* So, let's use statfs() if possible (it's bad idea for --lazy/--force
* umounts as target is probably unreachable NFS, also for --detach-loop
* as this additionally needs to know the name of the loop device).
+ *
+ * For the "umount --read-only" command, we need to read the mountinfo
+ * to obtain the mount source.
*/
if (mnt_context_is_restricted(cxt)
|| *tgt != '/'
@@ -275,6 +278,7 @@ static int lookup_umount_fs_by_statfs(struct libmnt_context *cxt, const char *tg
|| mnt_context_is_lazy(cxt)
|| mnt_context_is_nocanonicalize(cxt)
|| mnt_context_is_loopdel(cxt)
+ || mnt_context_is_rdonly_umount(cxt)
|| mnt_safe_stat(tgt, &st) != 0 || !S_ISDIR(st.st_mode)
|| has_utab_entry(cxt, tgt))
return 1; /* not found */