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 ece4564..dfb448c 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -215,81 +215,10 @@
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 e52049c..3a56056 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -176,7 +176,7 @@
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 739f399..271b2cb 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -316,7 +316,7 @@
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