aboutsummaryrefslogtreecommitdiffstats
path: root/net/tipc/socket.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/tipc/socket.c')
-rw-r--r--net/tipc/socket.c148
1 files changed, 59 insertions, 89 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index cd0bb77f2673..2b02a3a80313 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -34,17 +34,6 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/net.h>
-#include <linux/socket.h>
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/poll.h>
-#include <linux/fcntl.h>
-#include <linux/gfp.h>
-#include <asm/string.h>
-#include <asm/atomic.h>
#include <net/sock.h>
#include <linux/tipc.h>
@@ -79,7 +68,7 @@ static const struct proto_ops msg_ops;
static struct proto tipc_proto;
-static int sockets_enabled = 0;
+static int sockets_enabled;
static atomic_t tipc_queue_size = ATOMIC_INIT(0);
@@ -386,7 +375,7 @@ static int bind(struct socket *sock, struct sockaddr *uaddr, int uaddr_len)
*
* NOTE: This routine doesn't need to take the socket lock since it only
* accesses socket information that is unchanging (or which changes in
- * a completely predictable manner).
+ * a completely predictable manner).
*/
static int get_name(struct socket *sock, struct sockaddr *uaddr,
@@ -574,26 +563,26 @@ static int send_msg(struct kiocb *iocb, struct socket *sock,
do {
if (dest->addrtype == TIPC_ADDR_NAME) {
- if ((res = dest_name_check(dest, m)))
+ res = dest_name_check(dest, m);
+ if (res)
break;
res = tipc_send2name(tport->ref,
&dest->addr.name.name,
dest->addr.name.domain,
m->msg_iovlen,
m->msg_iov);
- }
- else if (dest->addrtype == TIPC_ADDR_ID) {
+ } else if (dest->addrtype == TIPC_ADDR_ID) {
res = tipc_send2port(tport->ref,
&dest->addr.id,
m->msg_iovlen,
m->msg_iov);
- }
- else if (dest->addrtype == TIPC_ADDR_MCAST) {
+ } else if (dest->addrtype == TIPC_ADDR_MCAST) {
if (needs_conn) {
res = -EOPNOTSUPP;
break;
}
- if ((res = dest_name_check(dest, m)))
+ res = dest_name_check(dest, m);
+ if (res)
break;
res = tipc_multicast(tport->ref,
&dest->addr.nameseq,
@@ -601,9 +590,8 @@ static int send_msg(struct kiocb *iocb, struct socket *sock,
m->msg_iov);
}
if (likely(res != -ELINKCONG)) {
- if (needs_conn && (res >= 0)) {
+ if (needs_conn && (res >= 0))
sock->state = SS_CONNECTING;
- }
break;
}
if (m->msg_flags & MSG_DONTWAIT) {
@@ -662,9 +650,8 @@ static int send_packet(struct kiocb *iocb, struct socket *sock,
}
res = tipc_send(tport->ref, m->msg_iovlen, m->msg_iov);
- if (likely(res != -ELINKCONG)) {
+ if (likely(res != -ELINKCONG))
break;
- }
if (m->msg_flags & MSG_DONTWAIT) {
res = -EWOULDBLOCK;
break;
@@ -763,7 +750,8 @@ static int send_stream(struct kiocb *iocb, struct socket *sock,
bytes_to_send = curr_left;
my_iov.iov_base = curr_start;
my_iov.iov_len = bytes_to_send;
- if ((res = send_packet(NULL, sock, &my_msg, 0)) < 0) {
+ res = send_packet(NULL, sock, &my_msg, 0);
+ if (res < 0) {
if (bytes_sent)
res = bytes_sent;
goto exit;
@@ -823,8 +811,8 @@ static void set_orig_addr(struct msghdr *m, struct tipc_msg *msg)
addr->addrtype = TIPC_ADDR_ID;
addr->addr.id.ref = msg_origport(msg);
addr->addr.id.node = msg_orignode(msg);
- addr->addr.name.domain = 0; /* could leave uninitialized */
- addr->scope = 0; /* could leave uninitialized */
+ addr->addr.name.domain = 0; /* could leave uninitialized */
+ addr->scope = 0; /* could leave uninitialized */
m->msg_namelen = sizeof(struct sockaddr_tipc);
}
}
@@ -858,12 +846,15 @@ static int anc_data_recv(struct msghdr *m, struct tipc_msg *msg,
if (unlikely(err)) {
anc_data[0] = err;
anc_data[1] = msg_data_sz(msg);
- if ((res = put_cmsg(m, SOL_TIPC, TIPC_ERRINFO, 8, anc_data)))
- return res;
- if (anc_data[1] &&
- (res = put_cmsg(m, SOL_TIPC, TIPC_RETDATA, anc_data[1],
- msg_data(msg))))
+ res = put_cmsg(m, SOL_TIPC, TIPC_ERRINFO, 8, anc_data);
+ if (res)
return res;
+ if (anc_data[1]) {
+ res = put_cmsg(m, SOL_TIPC, TIPC_RETDATA, anc_data[1],
+ msg_data(msg));
+ if (res)
+ return res;
+ }
}
/* Optionally capture message destination object */
@@ -891,9 +882,11 @@ static int anc_data_recv(struct msghdr *m, struct tipc_msg *msg,
default:
has_name = 0;
}
- if (has_name &&
- (res = put_cmsg(m, SOL_TIPC, TIPC_DESTNAME, 12, anc_data)))
- return res;
+ if (has_name) {
+ res = put_cmsg(m, SOL_TIPC, TIPC_DESTNAME, 12, anc_data);
+ if (res)
+ return res;
+ }
return 0;
}
@@ -1226,42 +1219,25 @@ static u32 filter_rcv(struct sock *sk, struct sk_buff *buf)
*/
if (sock->state == SS_READY) {
- if (msg_connected(msg)) {
- msg_dbg(msg, "dispatch filter 1\n");
+ if (msg_connected(msg))
return TIPC_ERR_NO_PORT;
- }
} else {
- if (msg_mcast(msg)) {
- msg_dbg(msg, "dispatch filter 2\n");
+ if (msg_mcast(msg))
return TIPC_ERR_NO_PORT;
- }
if (sock->state == SS_CONNECTED) {
- if (!msg_connected(msg)) {
- msg_dbg(msg, "dispatch filter 3\n");
+ if (!msg_connected(msg))
return TIPC_ERR_NO_PORT;
- }
- }
- else if (sock->state == SS_CONNECTING) {
- if (!msg_connected(msg) && (msg_errcode(msg) == 0)) {
- msg_dbg(msg, "dispatch filter 4\n");
+ } else if (sock->state == SS_CONNECTING) {
+ if (!msg_connected(msg) && (msg_errcode(msg) == 0))
return TIPC_ERR_NO_PORT;
- }
- }
- else if (sock->state == SS_LISTENING) {
- if (msg_connected(msg) || msg_errcode(msg)) {
- msg_dbg(msg, "dispatch filter 5\n");
+ } else if (sock->state == SS_LISTENING) {
+ if (msg_connected(msg) || msg_errcode(msg))
return TIPC_ERR_NO_PORT;
- }
- }
- else if (sock->state == SS_DISCONNECTING) {
- msg_dbg(msg, "dispatch filter 6\n");
+ } else if (sock->state == SS_DISCONNECTING) {
return TIPC_ERR_NO_PORT;
- }
- else /* (sock->state == SS_UNCONNECTED) */ {
- if (msg_connected(msg) || msg_errcode(msg)) {
- msg_dbg(msg, "dispatch filter 7\n");
+ } else /* (sock->state == SS_UNCONNECTED) */ {
+ if (msg_connected(msg) || msg_errcode(msg))
return TIPC_ERR_NO_PORT;
- }
}
}
@@ -1280,7 +1256,6 @@ static u32 filter_rcv(struct sock *sk, struct sk_buff *buf)
/* Enqueue message (finally!) */
- msg_dbg(msg, "<DISP<: ");
TIPC_SKB_CB(buf)->handle = msg_data(msg);
atomic_inc(&tipc_queue_size);
__skb_queue_tail(&sk->sk_receive_queue, buf);
@@ -1441,9 +1416,8 @@ static int connect(struct socket *sock, struct sockaddr *dest, int destlen,
m.msg_name = dest;
m.msg_namelen = destlen;
res = send_msg(NULL, sock, &m, 0);
- if (res < 0) {
+ if (res < 0)
goto exit;
- }
/* Wait until an 'ACK' or 'RST' arrives, or a timeout occurs */
@@ -1465,11 +1439,10 @@ static int connect(struct socket *sock, struct sockaddr *dest, int destlen,
advance_rx_queue(sk);
}
} else {
- if (sock->state == SS_CONNECTED) {
+ if (sock->state == SS_CONNECTED)
res = -EISCONN;
- } else {
+ else
res = -ECONNREFUSED;
- }
}
} else {
if (res == 0)
@@ -1588,7 +1561,6 @@ static int accept(struct socket *sock, struct socket *new_sock, int flags)
* Respond to 'SYN+' by queuing it on new socket.
*/
- msg_dbg(msg,"<ACC<: ");
if (!msg_data_sz(msg)) {
struct msghdr m = {NULL,};
@@ -1696,7 +1668,8 @@ static int setsockopt(struct socket *sock,
return -ENOPROTOOPT;
if (ol < sizeof(value))
return -EINVAL;
- if ((res = get_user(value, (u32 __user *)ov)))
+ res = get_user(value, (u32 __user *)ov);
+ if (res)
return res;
lock_sock(sk);
@@ -1754,7 +1727,8 @@ static int getsockopt(struct socket *sock,
return put_user(0, ol);
if (lvl != SOL_TIPC)
return -ENOPROTOOPT;
- if ((res = get_user(len, ol)))
+ res = get_user(len, ol);
+ if (res)
return res;
lock_sock(sk);
@@ -1773,10 +1747,10 @@ static int getsockopt(struct socket *sock,
value = jiffies_to_msecs(tipc_sk(sk)->conn_timeout);
/* no need to set "res", since already 0 at this point */
break;
- case TIPC_NODE_RECVQ_DEPTH:
+ case TIPC_NODE_RECVQ_DEPTH:
value = (u32)atomic_read(&tipc_queue_size);
break;
- case TIPC_SOCK_RECVQ_DEPTH:
+ case TIPC_SOCK_RECVQ_DEPTH:
value = skb_queue_len(&sk->sk_receive_queue);
break;
default:
@@ -1785,20 +1759,16 @@ static int getsockopt(struct socket *sock,
release_sock(sk);
- if (res) {
- /* "get" failed */
- }
- else if (len < sizeof(value)) {
- res = -EINVAL;
- }
- else if (copy_to_user(ov, &value, sizeof(value))) {
- res = -EFAULT;
- }
- else {
- res = put_user(sizeof(value), ol);
- }
+ if (res)
+ return res; /* "get" failed */
- return res;
+ if (len < sizeof(value))
+ return -EINVAL;
+
+ if (copy_to_user(ov, &value, sizeof(value)))
+ return -EFAULT;
+
+ return put_user(sizeof(value), ol);
}
/**
@@ -1806,7 +1776,7 @@ static int getsockopt(struct socket *sock,
*/
static const struct proto_ops msg_ops = {
- .owner = THIS_MODULE,
+ .owner = THIS_MODULE,
.family = AF_TIPC,
.release = release,
.bind = bind,
@@ -1827,7 +1797,7 @@ static const struct proto_ops msg_ops = {
};
static const struct proto_ops packet_ops = {
- .owner = THIS_MODULE,
+ .owner = THIS_MODULE,
.family = AF_TIPC,
.release = release,
.bind = bind,
@@ -1848,7 +1818,7 @@ static const struct proto_ops packet_ops = {
};
static const struct proto_ops stream_ops = {
- .owner = THIS_MODULE,
+ .owner = THIS_MODULE,
.family = AF_TIPC,
.release = release,
.bind = bind,
@@ -1869,7 +1839,7 @@ static const struct proto_ops stream_ops = {
};
static const struct net_proto_family tipc_family_ops = {
- .owner = THIS_MODULE,
+ .owner = THIS_MODULE,
.family = AF_TIPC,
.create = tipc_create
};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.