Implement 32-bit compatibility for waitid(2).
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index 8ddfbd8..d50daee 100644
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -902,3 +902,30 @@
set_fs (old_fs);
return ret;
}
+
+asmlinkage long
+sys32_waitid(int which, compat_pid_t pid,
+ compat_siginfo_t __user *uinfo, int options,
+ struct compat_rusage __user *uru)
+{
+ siginfo_t info;
+ struct rusage ru;
+ long ret;
+ mm_segment_t old_fs = get_fs();
+
+ info.si_signo = 0;
+ set_fs (KERNEL_DS);
+ ret = sys_waitid(which, pid, (siginfo_t __user *) &info, options,
+ uru ? (struct rusage __user *) &ru : NULL);
+ set_fs (old_fs);
+
+ if (ret < 0 || info.si_signo == 0)
+ return ret;
+
+ if (uru && (ret = put_compat_rusage(&ru, uru)))
+ return ret;
+
+ BUG_ON(info.si_code & __SI_MASK);
+ info.si_code |= __SI_CHLD;
+ return copy_siginfo_to_user32(uinfo, &info);
+}