switch rt_tgsigqueueinfo to COMPAT_SYSCALL_DEFINE

C ABI violations on sparc, ppc and mips

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 16 insertions, 1 deletions

diff --git a/kernel/signal.c b/kernel/signal.c
index 93fd4b83d866..5a4aed1244fb 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -3030,7 +3030,7 @@ COMPAT_SYSCALL_DEFINE3(rt_sigqueueinfo,
 #endif
 #endif
 
-long do_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, siginfo_t *info)
+static int do_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, siginfo_t *info)
 {
         /* This is only valid for single tasks */
         if (pid <= 0 || tgid <= 0)
@@ -3060,6 +3060,21 @@ SYSCALL_DEFINE4(rt_tgsigqueueinfo, pid_t, tgid, pid_t, pid, int, sig,
         return do_rt_tgsigqueueinfo(tgid, pid, sig, &info);
 }
 
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE4(rt_tgsigqueueinfo,
+                        compat_pid_t, tgid,
+                        compat_pid_t, pid,
+                        int, sig,
+                        struct compat_siginfo __user *, uinfo)
+{
+        siginfo_t info;
+
+        if (copy_siginfo_from_user32(&info, uinfo))
+                return -EFAULT;
+        return do_rt_tgsigqueueinfo(tgid, pid, sig, &info);
+}
+#endif
+
 int do_sigaction(int sig, struct k_sigaction *act, struct k_sigaction *oact)
 {
         struct task_struct *t = current;