mount: add --rbind option support

Signed-off-by: Roman Borisov <ext-roman.borisov@nokia.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 3 insertions, 1 deletions

diff --git a/include/usage.src.h b/include/usage.src.h
index 29f7b2110..d07b408a6 100644
--- a/include/usage.src.h
+++ b/include/usage.src.h
@@ -2482,7 +2482,7 @@ INSERT
      "\n        [r]slave        Convert [recursively] to a slave subtree" \
      "\n        [r]private      Convert [recursively] to a private subtree" \
      "\n        [un]bindable    Make mount point [un]able to be bind mounted" \
-     "\n        bind            Bind a file or directory to another location" \
+     "\n        [r]bind         Bind a file or directory [recursively] to another location" \
      "\n        move            Relocate an existing mount point" \
         ) \
      "\n        remount         Remount a mounted filesystem, changing flags" \
diff --git a/util-linux/mount.c b/util-linux/mount.c
index e672a73f4..722d0be92 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -181,6 +181,7 @@ static const int32_t mount_options[] = {
                 /* "relatime"    */ MS_RELATIME,
                 /* "norelatime"  */ ~MS_RELATIME,
                 /* "loud"        */ ~MS_SILENT,
+                /* "rbind"       */ MS_BIND|MS_RECURSIVE,
 
                 // action flags
                 /* "union"       */ MS_UNION,
@@ -236,6 +237,7 @@ static const char mount_option_str[] =
                 "relatime\0"
                 "norelatime\0"
                 "loud\0"
+                "rbind\0"
 
                 // action flags
                 "union\0"