s390: fix handling of -1 in set{,fs}[gu]id16 syscalls

[pandora-kernel.git] / arch / s390 / kernel / compat_linux.c

diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 76fdbad..93ce6de 100644 (file)
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -114,7 +114,7 @@ asmlinkage long sys32_setregid16(u16 rgid, u16 egid)
 
 asmlinkage long sys32_setgid16(u16 gid)
 {
-       return sys_setgid((gid_t)gid);
+       return sys_setgid(low2highgid(gid));
 }
 
 asmlinkage long sys32_setreuid16(u16 ruid, u16 euid)
@@ -124,7 +124,7 @@ asmlinkage long sys32_setreuid16(u16 ruid, u16 euid)
 
 asmlinkage long sys32_setuid16(u16 uid)
 {
-       return sys_setuid((uid_t)uid);
+       return sys_setuid(low2highuid(uid));
 }
 
 asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid)
@@ -163,12 +163,12 @@ asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user
 
 asmlinkage long sys32_setfsuid16(u16 uid)
 {
-       return sys_setfsuid((uid_t)uid);
+       return sys_setfsuid(low2highuid(uid));
 }
 
 asmlinkage long sys32_setfsgid16(u16 gid)
 {
-       return sys_setfsgid((gid_t)gid);
+       return sys_setfsgid(low2highgid(gid));
 }
 
 static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info)