[ 117/120] cifs: reinstate the forcegid option

[Greg Kroah-Hartman]

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jeff Layton <jlayton@xxxxxxxxxx>

commit 72bd481f860f0125c810bb43d878ce5f9c060c58 upstream.

Apparently this was lost when we converted to the standard option
parser in 8830d7e07a5e38bc47650a7554b7c1cfd49902bf

Reported-by: Gregory Lee Bartholomew <gregory.lee.bartholomew@xxxxxxxxx>
Cc: Sachin Prabhu <sprabhu@xxxxxxxxxx>
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
Signed-off-by: Steve French <smfrench@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 fs/cifs/connect.c |    9 +++++++++
 1 file changed, 9 insertions(+)

--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -70,6 +70,7 @@ enum {
 	/* Mount options that take no arguments */
 	Opt_user_xattr, Opt_nouser_xattr,
 	Opt_forceuid, Opt_noforceuid,
+	Opt_forcegid, Opt_noforcegid,
 	Opt_noblocksend, Opt_noautotune,
 	Opt_hard, Opt_soft, Opt_perm, Opt_noperm,
 	Opt_mapchars, Opt_nomapchars, Opt_sfu,
@@ -121,6 +122,8 @@ static const match_table_t cifs_mount_op
 	{ Opt_nouser_xattr, "nouser_xattr" },
 	{ Opt_forceuid, "forceuid" },
 	{ Opt_noforceuid, "noforceuid" },
+	{ Opt_forcegid, "forcegid" },
+	{ Opt_noforcegid, "noforcegid" },
 	{ Opt_noblocksend, "noblocksend" },
 	{ Opt_noautotune, "noautotune" },
 	{ Opt_hard, "hard" },
@@ -1287,6 +1290,12 @@ cifs_parse_mount_options(const char *mou
 		case Opt_noforceuid:
 			override_uid = 0;
 			break;
+		case Opt_forcegid:
+			override_gid = 1;
+			break;
+		case Opt_noforcegid:
+			override_gid = 0;
+			break;
 		case Opt_noblocksend:
 			vol->noblocksnd = 1;
 			break;


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