@@ -1645,6 +1645,54 @@ extern void sock_enable_timestamp(struct sock *sk, int flag);
extern int sock_get_timestamp(struct sock *, struct timeval __user *);
extern int sock_get_timestampns(struct sock *, struct timespec __user *);
+/* bind() helper shared between any callers needing to perform a bind on
+ * behalf of userspace (syscall and restart) with the security hooks.
+ */
+static inline int sock_bind(struct socket *sock,
+ struct sockaddr *addr,
+ int addr_len)
+{
+ int err;
+
+ err = security_socket_bind(sock, addr, addr_len);
+ if (err)
+ return err;
+ else
+ return sock->ops->bind(sock, addr, addr_len);
+}
+
+/* getname() helper shared between any callers needing to perform a getname on
+ * behalf of userspace (syscall and restart) with the security hooks.
+ */
+static inline int sock_getname(struct socket *sock,
+ struct sockaddr *addr,
+ int *addr_len)
+{
+ int err;
+
+ err = security_socket_getsockname(sock);
+ if (err)
+ return err;
+ else
+ return sock->ops->getname(sock, addr, addr_len, 0);
+}
+
+/* getpeer() helper shared between any callers needing to perform a getpeer on
+ * behalf of userspace (syscall and restart) with the security hooks.
+ */
+static inline int sock_getpeer(struct socket *sock,
+ struct sockaddr *addr,
+ int *addr_len)
+{
+ int err;
+
+ err = security_socket_getpeername(sock);
+ if (err)
+ return err;
+ else
+ return sock->ops->getname(sock, addr, addr_len, 1);
+}
+
/*
* Enable debug/info messages
*/
@@ -1422,15 +1422,10 @@ SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen)
sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (sock) {
err = move_addr_to_kernel(umyaddr, addrlen, (struct sockaddr *)&address);
- if (err >= 0) {
- err = security_socket_bind(sock,
- (struct sockaddr *)&address,
- addrlen);
- if (!err)
- err = sock->ops->bind(sock,
- (struct sockaddr *)
- &address, addrlen);
- }
+ if (err >= 0)
+ err = sock_bind(sock,
+ (struct sockaddr *)&address,
+ addrlen);
fput_light(sock->file, fput_needed);
}
return err;
@@ -1609,11 +1604,7 @@ SYSCALL_DEFINE3(getsockname, int, fd, struct sockaddr __user *, usockaddr,
if (!sock)
goto out;
- err = security_socket_getsockname(sock);
- if (err)
- goto out_put;
-
- err = sock->ops->getname(sock, (struct sockaddr *)&address, &len, 0);
+ err = sock_getname(sock, (struct sockaddr *)&address, &len);
if (err)
goto out_put;
err = move_addr_to_user((struct sockaddr *)&address, len, usockaddr, usockaddr_len);
@@ -1638,15 +1629,7 @@ SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr,
sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (sock != NULL) {
- err = security_socket_getpeername(sock);
- if (err) {
- fput_light(sock->file, fput_needed);
- return err;
- }
-
- err =
- sock->ops->getname(sock, (struct sockaddr *)&address, &len,
- 1);
+ err = sock_getpeer(sock, (struct sockaddr *)&address, &len);
if (!err)
err = move_addr_to_user((struct sockaddr *)&address, len, usockaddr,
usockaddr_len);