[MIPS] Fix N32 SysV IPC routines
Add wrappers for N32 msg{snd,rcv}. compat_sys_msg{snd,rcv} can not not be
used as system call entries as is. This fix is based on Kaz Kylheku's
patch.
Also change a type of last argument of sysn32_semctl to match its true
size.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index b061c9a..de3fae2 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -440,14 +440,26 @@
}
#ifdef CONFIG_MIPS32_N32
-asmlinkage long sysn32_semctl(int semid, int semnum, int cmd, union semun arg)
+asmlinkage long sysn32_semctl(int semid, int semnum, int cmd, u32 arg)
{
/* compat_sys_semctl expects a pointer to union semun */
u32 __user *uptr = compat_alloc_user_space(sizeof(u32));
- if (put_user(ptr_to_compat(arg.__pad), uptr))
+ if (put_user(arg, uptr))
return -EFAULT;
return compat_sys_semctl(semid, semnum, cmd, uptr);
}
+
+asmlinkage long sysn32_msgsnd(int msqid, u32 msgp, unsigned msgsz, int msgflg)
+{
+ return compat_sys_msgsnd(msqid, msgsz, msgflg, compat_ptr(msgp));
+}
+
+asmlinkage long sysn32_msgrcv(int msqid, u32 msgp, size_t msgsz, int msgtyp,
+ int msgflg)
+{
+ return compat_sys_msgrcv(msqid, msgsz, msgtyp, msgflg, IPC_64,
+ compat_ptr(msgp));
+}
#endif
struct sysctl_args32