1 files changed, 17 insertions, 0 deletions

diff --git a/net/socket.c b/net/socket.c
index a0ce8ad72252..d163adff95bf 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -69,6 +69,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/mutex.h>
+#include <linux/thread_info.h>
 #include <linux/wanrouter.h>
 #include <linux/if_bridge.h>
 #include <linux/if_frad.h>
@@ -1504,6 +1505,7 @@ out_fd:
         goto out_put;
 }
 
+#ifdef HAVE_SET_RESTORE_SIGMASK
 asmlinkage long sys_paccept(int fd, struct sockaddr __user *upeer_sockaddr,
                             int __user *upeer_addrlen,
                             const sigset_t __user *sigmask,
@@ -1541,6 +1543,21 @@ asmlinkage long sys_paccept(int fd, struct sockaddr __user *upeer_sockaddr,
 
         return ret;
 }
+#else
+asmlinkage long sys_paccept(int fd, struct sockaddr __user *upeer_sockaddr,
+                            int __user *upeer_addrlen,
+                            const sigset_t __user *sigmask,
+                            size_t sigsetsize, int flags)
+{
+        /* The platform does not support restoring the signal mask in the
+         * return path.  So we do not allow using paccept() with a signal
+         * mask.  */
+        if (sigmask)
+                return -EINVAL;
+
+        return do_accept(fd, upeer_sockaddr, upeer_addrlen, flags);
+}
+#endif
 
 asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr,
                            int __user *upeer_addrlen)