Make procfs accept none or proc as "device"

This allows "mount none /proc -t proc" to work.

* procfs/main.c (argp_parser): On ARGP_KEY_ARG, accept and ignore "none" and
"proc".

1 files changed, 6 insertions, 0 deletions

diff --git a/procfs/main.c b/procfs/main.c
index f773c09c..509f4883 100644
--- a/procfs/main.c
+++ b/procfs/main.c
@@ -130,6 +130,12 @@ argp_parser (int key, char *arg, struct argp_state *state)
       /* Ignored for compatibility with Linux' procfs. */
       break;
 
+    case ARGP_KEY_ARG:
+      if (!strcmp (arg, "none") || !strcmp (arg,"proc"))
+        /* Ignored for compatibility with Linux' procfs. */
+        break;
+      return ARGP_ERR_UNKNOWN;
+
     default:
       return ARGP_ERR_UNKNOWN;
   }