switch signalfd{,4}() to COMPAT_SYSCALL_DEFINE
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/signalfd.c b/fs/signalfd.c
index b534869..424b7b6 100644
--- a/fs/signalfd.c
+++ b/fs/signalfd.c
@@ -30,6 +30,7 @@
#include <linux/signalfd.h>
#include <linux/syscalls.h>
#include <linux/proc_fs.h>
+#include <linux/compat.h>
void signalfd_cleanup(struct sighand_struct *sighand)
{
@@ -311,3 +312,33 @@
{
return sys_signalfd4(ufd, user_mask, sizemask, 0);
}
+
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE4(signalfd4, int, ufd,
+ const compat_sigset_t __user *,sigmask,
+ compat_size_t, sigsetsize,
+ int, flags)
+{
+ compat_sigset_t ss32;
+ sigset_t tmp;
+ sigset_t __user *ksigmask;
+
+ if (sigsetsize != sizeof(compat_sigset_t))
+ return -EINVAL;
+ if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
+ return -EFAULT;
+ sigset_from_compat(&tmp, &ss32);
+ ksigmask = compat_alloc_user_space(sizeof(sigset_t));
+ if (copy_to_user(ksigmask, &tmp, sizeof(sigset_t)))
+ return -EFAULT;
+
+ return sys_signalfd4(ufd, ksigmask, sizeof(sigset_t), flags);
+}
+
+COMPAT_SYSCALL_DEFINE3(signalfd, int, ufd,
+ const compat_sigset_t __user *,sigmask,
+ compat_size_t, sigsetsize)
+{
+ return compat_sys_signalfd4(ufd, sigmask, sigsetsize, 0);
+}
+#endif