Implement 32-bit compatibility for waitid(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 dfb448c..120dd89 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -221,6 +221,28 @@
return compat_sys_wait4(pid, stat_addr, options, NULL);
}
+asmlinkage long
+sysn32_waitid(int which, compat_pid_t pid,
+ siginfo_t __user *uinfo, int options,
+ struct compat_rusage __user *uru)
+{
+ struct rusage ru;
+ long ret;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_waitid(which, pid, uinfo, options,
+ uru ? (struct rusage __user *) &ru : NULL);
+ set_fs (old_fs);
+
+ if (ret < 0 || uinfo->si_signo == 0)
+ return ret;
+
+ if (uru)
+ ret = put_compat_rusage(&ru, uru);
+ return ret;
+}
+
struct sysinfo32 {
s32 uptime;
u32 loads[3];