[PATCH 1/2] kernel/sys.c: return the current gid when error occurs

[Chen Gang <gang.chen@asianux.com>]

According to the API definition, when error occurs, need return current
fsgid instead of the previous one.

The related informations ("man setfsgid"):

  RETURN VALUE
         On success, the previous value of fsgid is returned.  On error, the current value of fsgid is returned.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
---
 kernel/sys.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/sys.c b/kernel/sys.c
index 771129b..9356dc8 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -775,11 +775,11 @@ SYSCALL_DEFINE1(setfsgid, gid_t, gid)
 
 	kgid = make_kgid(old->user_ns, gid);
 	if (!gid_valid(kgid))
-		return old_fsgid;
+		return gid;
 
 	new = prepare_creds();
 	if (!new)
-		return old_fsgid;
+		return gid;
 
 	if (gid_eq(kgid, old->gid)  || gid_eq(kgid, old->egid)  ||
 	    gid_eq(kgid, old->sgid) || gid_eq(kgid, old->fsgid) ||
@@ -791,7 +791,7 @@ SYSCALL_DEFINE1(setfsgid, gid_t, gid)
 	}
 
 	abort_creds(new);
-	return old_fsgid;
+	return gid;
 
 change_okay:
 	commit_creds(new);
-- 
1.7.7.6