[PATCH 24/51] [GFS2] Add NULL entry to token table

swhiteho
2007-10-04T09:26:14Z

From: Benjamin Marzinski <bmarzins@redhat.com>

match_token() was returning garbage data instead of a fail value. This data
happened to match a valid option id for an option that required an argument (in
this case, lockproto=%s) For match_token() to correctly fail if the option
doesn't match any of the tokens, the token table must end with a NULL entry.
This patch adds the NULL entry.

Signed-off-by: Benjamin E. Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

diff --git a/fs/gfs2/mount.c b/fs/gfs2/mount.c
index 4864659..b941f9f 100644
--- a/fs/gfs2/mount.c
+++ b/fs/gfs2/mount.c
@@ -42,6 +42,7 @@ enum {
Opt_nosuiddir,
Opt_data_writeback,
Opt_data_ordered,
+ Opt_err,
};

static match_table_t tokens = {
@@ -64,7 +65,8 @@ static match_table_t tokens = {
{Opt_suiddir, "suiddir"},
{Opt_nosuiddir, "nosuiddir"},
{Opt_data_writeback, "data=writeback"},
- {Opt_data_ordered, "data=ordered"}
+ {Opt_data_ordered, "data=ordered"},
+ {Opt_err, NULL}
};

/**
@@ -237,6 +239,7 @@ int gfs2_mount_args(struct gfs2_sbd *sdp, char *data_arg, int remount)
case Opt_data_ordered:
args->ar_data = GFS2_DATA_ORDERED;
break;
+ case Opt_err:
default:
fs_info(sdp, "unknown option: %s\n", o);
error = -EINVAL;
--
1.5.1.2