[MIPS] Use SYSVIPC_COMPAT to fix various problems on N32

N32 SysV IPC system calls should use 32-bit compatible code.
arch/mips/kernel/linux32.c have similar compatible code for O32, but
ipc/compat.c seems more complete.  We can use it for both N32 and O32.

This patch should fix these problems (and other possible problems):

http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=1149188824.6986.6.camel%40diimka-laptop
http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=44C6B829.8050508%40caviumnetworks.com

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 68 insertions, 0 deletions

diff --git a/include/asm-mips/compat.h b/include/asm-mips/compat.h
index 900f472fdd2b..55a0152feb08 100644
--- a/include/asm-mips/compat.h
+++ b/include/asm-mips/compat.h
@@ -32,6 +32,7 @@ typedef struct {
         s32     val[2];
 } compat_fsid_t;
 typedef s32             compat_timer_t;
+typedef s32             compat_key_t;
 
 typedef s32             compat_int_t;
 typedef s32             compat_long_t;
@@ -146,4 +147,71 @@ static inline void __user *compat_alloc_user_space(long len)
         return (void __user *) (regs->regs[29] - len);
 }
 
+struct compat_ipc64_perm {
+        compat_key_t key;
+        __compat_uid32_t uid;
+        __compat_gid32_t gid;
+        __compat_uid32_t cuid;
+        __compat_gid32_t cgid;
+        compat_mode_t mode;
+        unsigned short seq;
+        unsigned short __pad2;
+        compat_ulong_t __unused1;
+        compat_ulong_t __unused2;
+};
+
+struct compat_semid64_ds {
+        struct compat_ipc64_perm sem_perm;
+        compat_time_t   sem_otime;
+        compat_time_t   sem_ctime;
+        compat_ulong_t  sem_nsems;
+        compat_ulong_t  __unused1;
+        compat_ulong_t  __unused2;
+};
+
+struct compat_msqid64_ds {
+        struct compat_ipc64_perm msg_perm;
+#ifndef CONFIG_CPU_LITTLE_ENDIAN
+        compat_ulong_t  __unused1;
+#endif
+        compat_time_t   msg_stime;
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+        compat_ulong_t  __unused1;
+#endif
+#ifndef CONFIG_CPU_LITTLE_ENDIAN
+        compat_ulong_t  __unused2;
+#endif
+        compat_time_t   msg_rtime;
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+        compat_ulong_t  __unused2;
+#endif
+#ifndef CONFIG_CPU_LITTLE_ENDIAN
+        compat_ulong_t  __unused3;
+#endif
+        compat_time_t   msg_ctime;
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+        compat_ulong_t  __unused3;
+#endif
+        compat_ulong_t  msg_cbytes;
+        compat_ulong_t  msg_qnum;
+        compat_ulong_t  msg_qbytes;
+        compat_pid_t    msg_lspid;
+        compat_pid_t    msg_lrpid;
+        compat_ulong_t  __unused4;
+        compat_ulong_t  __unused5;
+};
+
+struct compat_shmid64_ds {
+        struct compat_ipc64_perm shm_perm;
+        compat_size_t   shm_segsz;
+        compat_time_t   shm_atime;
+        compat_time_t   shm_dtime;
+        compat_time_t   shm_ctime;
+        compat_pid_t    shm_cpid;
+        compat_pid_t    shm_lpid;
+        compat_ulong_t  shm_nattch;
+        compat_ulong_t  __unused1;
+        compat_ulong_t  __unused2;
+};
+
 #endif /* _ASM_COMPAT_H */