Use generic compat_sys_wait4 to implement 32-bit wait4(2).

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index ece4564919d8f76c077ccf8cdbb6c95545f8d468..dfb448c015e1750f37c536e84dcd3069660d2e59 100644 (file)
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -215,81 +215,10 @@ sys32_readdir(unsigned int fd, void * dirent32, unsigned int count)
        return(n);
 }
 
-struct rusage32 {
-        struct compat_timeval ru_utime;
-        struct compat_timeval ru_stime;
-        int    ru_maxrss;
-        int    ru_ixrss;
-        int    ru_idrss;
-        int    ru_isrss;
-        int    ru_minflt;
-        int    ru_majflt;
-        int    ru_nswap;
-        int    ru_inblock;
-        int    ru_oublock;
-        int    ru_msgsnd;
-        int    ru_msgrcv;
-        int    ru_nsignals;
-        int    ru_nvcsw;
-        int    ru_nivcsw;
-};
-
-static int
-put_rusage (struct rusage32 *ru, struct rusage *r)
-{
-       int err;
-
-       if (!access_ok(VERIFY_WRITE, ru, sizeof *ru))
-               return -EFAULT;
-
-       err = __put_user (r->ru_utime.tv_sec, &ru->ru_utime.tv_sec);
-       err |= __put_user (r->ru_utime.tv_usec, &ru->ru_utime.tv_usec);
-       err |= __put_user (r->ru_stime.tv_sec, &ru->ru_stime.tv_sec);
-       err |= __put_user (r->ru_stime.tv_usec, &ru->ru_stime.tv_usec);
-       err |= __put_user (r->ru_maxrss, &ru->ru_maxrss);
-       err |= __put_user (r->ru_ixrss, &ru->ru_ixrss);
-       err |= __put_user (r->ru_idrss, &ru->ru_idrss);
-       err |= __put_user (r->ru_isrss, &ru->ru_isrss);
-       err |= __put_user (r->ru_minflt, &ru->ru_minflt);
-       err |= __put_user (r->ru_majflt, &ru->ru_majflt);
-       err |= __put_user (r->ru_nswap, &ru->ru_nswap);
-       err |= __put_user (r->ru_inblock, &ru->ru_inblock);
-       err |= __put_user (r->ru_oublock, &ru->ru_oublock);
-       err |= __put_user (r->ru_msgsnd, &ru->ru_msgsnd);
-       err |= __put_user (r->ru_msgrcv, &ru->ru_msgrcv);
-       err |= __put_user (r->ru_nsignals, &ru->ru_nsignals);
-       err |= __put_user (r->ru_nvcsw, &ru->ru_nvcsw);
-       err |= __put_user (r->ru_nivcsw, &ru->ru_nivcsw);
-
-       return err;
-}
-
-asmlinkage int
-sys32_wait4(compat_pid_t pid, unsigned int * stat_addr, int options,
-           struct rusage32 * ru)
-{
-       if (!ru)
-               return sys_wait4(pid, stat_addr, options, NULL);
-       else {
-               struct rusage r;
-               int ret;
-               unsigned int status;
-               mm_segment_t old_fs = get_fs();
-
-               set_fs(KERNEL_DS);
-               ret = sys_wait4(pid, stat_addr ? &status : NULL, options, &r);
-               set_fs(old_fs);
-               if (put_rusage (ru, &r)) return -EFAULT;
-               if (stat_addr && put_user (status, stat_addr))
-                       return -EFAULT;
-               return ret;
-       }
-}
-
 asmlinkage int
 sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, int options)
 {
-       return sys32_wait4(pid, stat_addr, options, NULL);
+       return compat_sys_wait4(pid, stat_addr, options, NULL);
 }
 
 struct sysinfo32 {

diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index e52049c87bc3d8b51a41918c896908973fa34ab4..3a56056d81253a61ffe43304d999bc23098afcd0 100644 (file)
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -176,7 +176,7 @@ EXPORT(sysn32_call_table)
        PTR     sys_fork
        PTR     sys32_execve
        PTR     sys_exit
-       PTR     sys32_wait4
+       PTR     compat_sys_wait4
        PTR     sys_kill                        /* 6060 */
        PTR     sys32_newuname
        PTR     sys_semget

diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 739f3998d76bdc9082b8431999bf4a46d3c3483b..271b2cb14da0a0114ef2c3f375dd4b4cb817cc6a 100644 (file)
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -316,7 +316,7 @@ sys_call_table:
        PTR     sys_vhangup
        PTR     sys_ni_syscall                  /* was sys_idle  */
        PTR     sys_ni_syscall                  /* sys_vm86 */
-       PTR     sys32_wait4
+       PTR     compat_sys_wait4
        PTR     sys_swapoff                     /* 4115 */
        PTR     sys32_sysinfo
        PTR     sys32_ipc