From 43db362d3adda9e0a915ddb9a8d1a41186e19179 Mon Sep 17 00:00:00 2001 From: Maciej Żenczykowski Date: Sun, 11 Mar 2012 12:51:50 +0000 Subject: net: get rid of some pointless casts to sockaddr MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The following 4 functions: move_addr_to_kernel move_addr_to_user verify_iovec verify_compat_iovec are always effectively called with a sockaddr_storage. Make this explicit by changing their signature. This removes a large number of casts from sockaddr_storage to sockaddr. Signed-off-by: Maciej Żenczykowski Signed-off-by: David S. Miller --- net/compat.c | 2 +- net/core/iovec.c | 2 +- net/socket.c | 36 ++++++++++++++---------------------- 3 files changed, 16 insertions(+), 24 deletions(-) (limited to 'net') diff --git a/net/compat.c b/net/compat.c index 6def90e0a11..64b4515a64e 100644 --- a/net/compat.c +++ b/net/compat.c @@ -79,7 +79,7 @@ int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg) /* I've named the args so it is easy to tell whose space the pointers are in. */ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov, - struct sockaddr *kern_address, int mode) + struct sockaddr_storage *kern_address, int mode) { int tot_len; diff --git a/net/core/iovec.c b/net/core/iovec.c index c40f27e7d20..7e7aeb01de4 100644 --- a/net/core/iovec.c +++ b/net/core/iovec.c @@ -35,7 +35,7 @@ * in any case. */ -int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr *address, int mode) +int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr_storage *address, int mode) { int size, ct, err; diff --git a/net/socket.c b/net/socket.c index 28a96af484b..12a48d84622 100644 --- a/net/socket.c +++ b/net/socket.c @@ -181,7 +181,7 @@ static DEFINE_PER_CPU(int, sockets_in_use); * invalid addresses -EFAULT is returned. On a success 0 is returned. */ -int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr) +int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr) { if (ulen < 0 || ulen > sizeof(struct sockaddr_storage)) return -EINVAL; @@ -209,7 +209,7 @@ int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr) * specified. Zero is returned for a success. */ -static int move_addr_to_user(struct sockaddr *kaddr, int klen, +static int move_addr_to_user(struct sockaddr_storage *kaddr, int klen, void __user *uaddr, int __user *ulen) { int err; @@ -1449,7 +1449,7 @@ 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); + err = move_addr_to_kernel(umyaddr, addrlen, &address); if (err >= 0) { err = security_socket_bind(sock, (struct sockaddr *)&address, @@ -1556,7 +1556,7 @@ SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr, err = -ECONNABORTED; goto out_fd; } - err = move_addr_to_user((struct sockaddr *)&address, + err = move_addr_to_user(&address, len, upeer_sockaddr, upeer_addrlen); if (err < 0) goto out_fd; @@ -1605,7 +1605,7 @@ SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr, sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; - err = move_addr_to_kernel(uservaddr, addrlen, (struct sockaddr *)&address); + err = move_addr_to_kernel(uservaddr, addrlen, &address); if (err < 0) goto out_put; @@ -1645,7 +1645,7 @@ SYSCALL_DEFINE3(getsockname, int, fd, struct sockaddr __user *, usockaddr, err = sock->ops->getname(sock, (struct sockaddr *)&address, &len, 0); if (err) goto out_put; - err = move_addr_to_user((struct sockaddr *)&address, len, usockaddr, usockaddr_len); + err = move_addr_to_user(&address, len, usockaddr, usockaddr_len); out_put: fput_light(sock->file, fput_needed); @@ -1677,7 +1677,7 @@ SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr, sock->ops->getname(sock, (struct sockaddr *)&address, &len, 1); if (!err) - err = move_addr_to_user((struct sockaddr *)&address, len, usockaddr, + err = move_addr_to_user(&address, len, usockaddr, usockaddr_len); fput_light(sock->file, fput_needed); } @@ -1716,7 +1716,7 @@ SYSCALL_DEFINE6(sendto, int, fd, void __user *, buff, size_t, len, msg.msg_controllen = 0; msg.msg_namelen = 0; if (addr) { - err = move_addr_to_kernel(addr, addr_len, (struct sockaddr *)&address); + err = move_addr_to_kernel(addr, addr_len, &address); if (err < 0) goto out_put; msg.msg_name = (struct sockaddr *)&address; @@ -1779,7 +1779,7 @@ SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size, err = sock_recvmsg(sock, &msg, size, flags); if (err >= 0 && addr != NULL) { - err2 = move_addr_to_user((struct sockaddr *)&address, + err2 = move_addr_to_user(&address, msg.msg_namelen, addr, addr_len); if (err2 < 0) err = err2; @@ -1933,13 +1933,9 @@ static int __sys_sendmsg(struct socket *sock, struct msghdr __user *msg, /* This will also move the address data into kernel space */ if (MSG_CMSG_COMPAT & flags) { - err = verify_compat_iovec(msg_sys, iov, - (struct sockaddr *)&address, - VERIFY_READ); + err = verify_compat_iovec(msg_sys, iov, &address, VERIFY_READ); } else - err = verify_iovec(msg_sys, iov, - (struct sockaddr *)&address, - VERIFY_READ); + err = verify_iovec(msg_sys, iov, &address, VERIFY_READ); if (err < 0) goto out_freeiov; total_len = err; @@ -2143,13 +2139,9 @@ static int __sys_recvmsg(struct socket *sock, struct msghdr __user *msg, uaddr = (__force void __user *)msg_sys->msg_name; uaddr_len = COMPAT_NAMELEN(msg); if (MSG_CMSG_COMPAT & flags) { - err = verify_compat_iovec(msg_sys, iov, - (struct sockaddr *)&addr, - VERIFY_WRITE); + err = verify_compat_iovec(msg_sys, iov, &addr, VERIFY_WRITE); } else - err = verify_iovec(msg_sys, iov, - (struct sockaddr *)&addr, - VERIFY_WRITE); + err = verify_iovec(msg_sys, iov, &addr, VERIFY_WRITE); if (err < 0) goto out_freeiov; total_len = err; @@ -2166,7 +2158,7 @@ static int __sys_recvmsg(struct socket *sock, struct msghdr __user *msg, len = err; if (uaddr != NULL) { - err = move_addr_to_user((struct sockaddr *)&addr, + err = move_addr_to_user(&addr, msg_sys->msg_namelen, uaddr, uaddr_len); if (err < 0) -- cgit v1.2.3-18-g5258