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net: Cleanup of af_unix

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This is a pure cleanup of net/unix/af_unix.c to meet current code
style standards

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2008-11-16 22:58:44 -08:00
committed by David S. Miller
parent 1910299636
commit 6eba6a372b
1 changed files with 55 additions and 62 deletions
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117
net/unix/af_unix.c
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@@ -164,7 +164,7 @@ static inline int unix_our_peer(struct sock *sk, struct sock *osk)
static inline int unix_may_send(struct sock *sk, struct sock *osk) static inline int unix_may_send(struct sock *sk, struct sock *osk)
{ {
return (unix_peer(osk) == NULL || unix_our_peer(sk, osk)); return unix_peer(osk) == NULL || unix_our_peer(sk, osk);
} }
static inline int unix_recvq_full(struct sock const *sk) static inline int unix_recvq_full(struct sock const *sk)
@@ -197,7 +197,7 @@ static inline void unix_release_addr(struct unix_address *addr)
* - if started by zero, it is abstract name. * - if started by zero, it is abstract name.
*/ */
static int unix_mkname(struct sockaddr_un * sunaddr, int len, unsigned *hashp) static int unix_mkname(struct sockaddr_un *sunaddr, int len, unsigned *hashp)
{ {
if (len <= sizeof(short) || len > sizeof(*sunaddr)) if (len <= sizeof(short) || len > sizeof(*sunaddr))
return -EINVAL; return -EINVAL;
@@ -216,7 +216,7 @@ static int unix_mkname(struct sockaddr_un * sunaddr, int len, unsigned *hashp)
return len; return len;
} }
*hashp = unix_hash_fold(csum_partial((char*)sunaddr, len, 0)); *hashp = unix_hash_fold(csum_partial((char *)sunaddr, len, 0));
return len; return len;
} }
@@ -295,8 +295,7 @@ static struct sock *unix_find_socket_byinode(struct net *net, struct inode *i)
if (!net_eq(sock_net(s), net)) if (!net_eq(sock_net(s), net))
continue; continue;
if(dentry && dentry->d_inode == i) if (dentry && dentry->d_inode == i) {
{
sock_hold(s); sock_hold(s);
goto found; goto found;
} }
@@ -354,7 +353,7 @@ static void unix_sock_destructor(struct sock *sk)
WARN_ON(!sk_unhashed(sk)); WARN_ON(!sk_unhashed(sk));
WARN_ON(sk->sk_socket); WARN_ON(sk->sk_socket);
if (!sock_flag(sk, SOCK_DEAD)) { if (!sock_flag(sk, SOCK_DEAD)) {
printk("Attempt to release alive unix socket: %p\n", sk); printk(KERN_DEBUG "Attempt to release alive unix socket: %p\n", sk);
return; return;
} }
@@ -363,11 +362,12 @@ static void unix_sock_destructor(struct sock *sk)
atomic_dec(&unix_nr_socks); atomic_dec(&unix_nr_socks);
#ifdef UNIX_REFCNT_DEBUG #ifdef UNIX_REFCNT_DEBUG
printk(KERN_DEBUG "UNIX %p is destroyed, %d are still alive.\n", sk, atomic_read(&unix_nr_socks)); printk(KERN_DEBUG "UNIX %p is destroyed, %d are still alive.\n", sk,
atomic_read(&unix_nr_socks));
#endif #endif
} }
static int unix_release_sock (struct sock *sk, int embrion) static int unix_release_sock(struct sock *sk, int embrion)
{ {
struct unix_sock *u = unix_sk(sk); struct unix_sock *u = unix_sk(sk);
struct dentry *dentry; struct dentry *dentry;
@@ -453,11 +453,11 @@ static int unix_listen(struct socket *sock, int backlog)
struct unix_sock *u = unix_sk(sk); struct unix_sock *u = unix_sk(sk);
err = -EOPNOTSUPP; err = -EOPNOTSUPP;
if (sock->type!=SOCK_STREAM && sock->type!=SOCK_SEQPACKET) if (sock->type != SOCK_STREAM && sock->type != SOCK_SEQPACKET)
goto out; /* Only stream/seqpacket sockets accept */ goto out; /* Only stream/seqpacket sockets accept */
err = -EINVAL; err = -EINVAL;
if (!u->addr) if (!u->addr)
goto out; /* No listens on an unbound socket */ goto out; /* No listens on an unbound socket */
unix_state_lock(sk); unix_state_lock(sk);
if (sk->sk_state != TCP_CLOSE && sk->sk_state != TCP_LISTEN) if (sk->sk_state != TCP_CLOSE && sk->sk_state != TCP_LISTEN)
goto out_unlock; goto out_unlock;
@@ -579,7 +579,7 @@ static struct proto unix_proto = {
*/ */
static struct lock_class_key af_unix_sk_receive_queue_lock_key; static struct lock_class_key af_unix_sk_receive_queue_lock_key;
static struct sock * unix_create1(struct net *net, struct socket *sock) static struct sock *unix_create1(struct net *net, struct socket *sock)
{ {
struct sock *sk = NULL; struct sock *sk = NULL;
struct unix_sock *u; struct unix_sock *u;
@@ -592,7 +592,7 @@ static struct sock * unix_create1(struct net *net, struct socket *sock)
if (!sk) if (!sk)
goto out; goto out;
sock_init_data(sock,sk); sock_init_data(sock, sk);
lockdep_set_class(&sk->sk_receive_queue.lock, lockdep_set_class(&sk->sk_receive_queue.lock,
&af_unix_sk_receive_queue_lock_key); &af_unix_sk_receive_queue_lock_key);
@@ -653,7 +653,7 @@ static int unix_release(struct socket *sock)
sock->sk = NULL; sock->sk = NULL;
return unix_release_sock (sk, 0); return unix_release_sock(sk, 0);
} }
static int unix_autobind(struct socket *sock) static int unix_autobind(struct socket *sock)
@@ -662,7 +662,7 @@ static int unix_autobind(struct socket *sock)
struct net *net = sock_net(sk); struct net *net = sock_net(sk);
struct unix_sock *u = unix_sk(sk); struct unix_sock *u = unix_sk(sk);
static u32 ordernum = 1; static u32 ordernum = 1;
struct unix_address * addr; struct unix_address *addr;
int err; int err;
mutex_lock(&u->readlock); mutex_lock(&u->readlock);
@@ -681,7 +681,7 @@ static int unix_autobind(struct socket *sock)
retry: retry:
addr->len = sprintf(addr->name->sun_path+1, "%05x", ordernum) + 1 + sizeof(short); addr->len = sprintf(addr->name->sun_path+1, "%05x", ordernum) + 1 + sizeof(short);
addr->hash = unix_hash_fold(csum_partial((void*)addr->name, addr->len, 0)); addr->hash = unix_hash_fold(csum_partial((void *)addr->name, addr->len, 0));
spin_lock(&unix_table_lock); spin_lock(&unix_table_lock);
ordernum = (ordernum+1)&0xFFFFF; ordernum = (ordernum+1)&0xFFFFF;
@@ -768,7 +768,7 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
struct net *net = sock_net(sk); struct net *net = sock_net(sk);
struct unix_sock *u = unix_sk(sk); struct unix_sock *u = unix_sk(sk);
struct sockaddr_un *sunaddr = (struct sockaddr_un *)uaddr; struct sockaddr_un *sunaddr = (struct sockaddr_un *)uaddr;
struct dentry * dentry = NULL; struct dentry *dentry = NULL;
struct nameidata nd; struct nameidata nd;
int err; int err;
unsigned hash; unsigned hash;
@@ -1207,7 +1207,7 @@ static int unix_accept(struct socket *sock, struct socket *newsock, int flags)
int err; int err;
err = -EOPNOTSUPP; err = -EOPNOTSUPP;
if (sock->type!=SOCK_STREAM && sock->type!=SOCK_SEQPACKET) if (sock->type != SOCK_STREAM && sock->type != SOCK_SEQPACKET)
goto out; goto out;
err = -EINVAL; err = -EINVAL;
@@ -1286,7 +1286,7 @@ static void unix_detach_fds(struct scm_cookie *scm, struct sk_buff *skb)
skb->destructor = sock_wfree; skb->destructor = sock_wfree;
UNIXCB(skb).fp = NULL; UNIXCB(skb).fp = NULL;
for (i=scm->fp->count-1; i>=0; i--) for (i = scm->fp->count-1; i >= 0; i--)
unix_notinflight(scm->fp->fp[i]); unix_notinflight(scm->fp->fp[i]);
} }
@@ -1315,7 +1315,7 @@ static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)
if (!UNIXCB(skb).fp) if (!UNIXCB(skb).fp)
return -ENOMEM; return -ENOMEM;
for (i=scm->fp->count-1; i>=0; i--) for (i = scm->fp->count-1; i >= 0; i--)
unix_inflight(scm->fp->fp[i]); unix_inflight(scm->fp->fp[i]);
skb->destructor = unix_destruct_fds; skb->destructor = unix_destruct_fds;
return 0; return 0;
@@ -1385,7 +1385,7 @@ static int unix_dgram_sendmsg(struct kiocb *kiocb, struct socket *sock,
unix_get_secdata(siocb->scm, skb); unix_get_secdata(siocb->scm, skb);
skb_reset_transport_header(skb); skb_reset_transport_header(skb);
err = memcpy_fromiovec(skb_put(skb,len), msg->msg_iov, len); err = memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len);
if (err) if (err)
goto out_free; goto out_free;
@@ -1486,7 +1486,7 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
struct sock *sk = sock->sk; struct sock *sk = sock->sk;
struct sock *other = NULL; struct sock *other = NULL;
struct sockaddr_un *sunaddr = msg->msg_name; struct sockaddr_un *sunaddr = msg->msg_name;
int err,size; int err, size;
struct sk_buff *skb; struct sk_buff *skb;
int sent = 0; int sent = 0;
struct scm_cookie tmp_scm; struct scm_cookie tmp_scm;
@@ -1515,8 +1515,7 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
if (sk->sk_shutdown & SEND_SHUTDOWN) if (sk->sk_shutdown & SEND_SHUTDOWN)
goto pipe_err; goto pipe_err;
while(sent < len) while (sent < len) {
{
/* /*
* Optimisation for the fact that under 0.01% of X * Optimisation for the fact that under 0.01% of X
* messages typically need breaking up. * messages typically need breaking up.
@@ -1535,7 +1534,8 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
* Grab a buffer * Grab a buffer
*/ */
skb = sock_alloc_send_skb(sk,size,msg->msg_flags&MSG_DONTWAIT, &err); skb = sock_alloc_send_skb(sk, size, msg->msg_flags&MSG_DONTWAIT,
&err);
if (skb == NULL) if (skb == NULL)
goto out_err; goto out_err;
@@ -1558,7 +1558,8 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
} }
} }
if ((err = memcpy_fromiovec(skb_put(skb,size), msg->msg_iov, size)) != 0) { err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
if (err) {
kfree_skb(skb); kfree_skb(skb);
goto out_err; goto out_err;
} }
@@ -1584,8 +1585,8 @@ pipe_err_free:
unix_state_unlock(other); unix_state_unlock(other);
kfree_skb(skb); kfree_skb(skb);
pipe_err: pipe_err:
if (sent==0 && !(msg->msg_flags&MSG_NOSIGNAL)) if (sent == 0 && !(msg->msg_flags&MSG_NOSIGNAL))
send_sig(SIGPIPE,current,0); send_sig(SIGPIPE, current, 0);
err = -EPIPE; err = -EPIPE;
out_err: out_err:
scm_destroy(siocb->scm); scm_destroy(siocb->scm);
@@ -1675,13 +1676,10 @@ static int unix_dgram_recvmsg(struct kiocb *iocb, struct socket *sock,
siocb->scm->creds = *UNIXCREDS(skb); siocb->scm->creds = *UNIXCREDS(skb);
unix_set_secdata(siocb->scm, skb); unix_set_secdata(siocb->scm, skb);
if (!(flags & MSG_PEEK)) if (!(flags & MSG_PEEK)) {
{
if (UNIXCB(skb).fp) if (UNIXCB(skb).fp)
unix_detach_fds(siocb->scm, skb); unix_detach_fds(siocb->scm, skb);
} } else {
else
{
/* It is questionable: on PEEK we could: /* It is questionable: on PEEK we could:
- do not return fds - good, but too simple 8) - do not return fds - good, but too simple 8)
- return fds, and do not return them on read (old strategy, - return fds, and do not return them on read (old strategy,
@@ -1702,7 +1700,7 @@ static int unix_dgram_recvmsg(struct kiocb *iocb, struct socket *sock,
scm_recv(sock, msg, siocb->scm, flags); scm_recv(sock, msg, siocb->scm, flags);
out_free: out_free:
skb_free_datagram(sk,skb); skb_free_datagram(sk, skb);
out_unlock: out_unlock:
mutex_unlock(&u->readlock); mutex_unlock(&u->readlock);
out: out:
@@ -1713,7 +1711,7 @@ out:
* Sleep until data has arrive. But check for races.. * Sleep until data has arrive. But check for races..
*/ */
static long unix_stream_data_wait(struct sock * sk, long timeo) static long unix_stream_data_wait(struct sock *sk, long timeo)
{ {
DEFINE_WAIT(wait); DEFINE_WAIT(wait);
@@ -1782,15 +1780,13 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
mutex_lock(&u->readlock); mutex_lock(&u->readlock);
do do {
{
int chunk; int chunk;
struct sk_buff *skb; struct sk_buff *skb;
unix_state_lock(sk); unix_state_lock(sk);
skb = skb_dequeue(&sk->sk_receive_queue); skb = skb_dequeue(&sk->sk_receive_queue);
if (skb == NULL) if (skb == NULL) {
{
if (copied >= target) if (copied >= target)
goto unlock; goto unlock;
@@ -1798,7 +1794,8 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
* POSIX 1003.1g mandates this order. * POSIX 1003.1g mandates this order.
*/ */
if ((err = sock_error(sk)) != 0) err = sock_error(sk);
if (err)
goto unlock; goto unlock;
if (sk->sk_shutdown & RCV_SHUTDOWN) if (sk->sk_shutdown & RCV_SHUTDOWN)
goto unlock; goto unlock;
@@ -1825,7 +1822,8 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
if (check_creds) { if (check_creds) {
/* Never glue messages from different writers */ /* Never glue messages from different writers */
if (memcmp(UNIXCREDS(skb), &siocb->scm->creds, sizeof(siocb->scm->creds)) != 0) { if (memcmp(UNIXCREDS(skb), &siocb->scm->creds,
sizeof(siocb->scm->creds)) != 0) {
skb_queue_head(&sk->sk_receive_queue, skb); skb_queue_head(&sk->sk_receive_queue, skb);
break; break;
} }
@@ -1836,8 +1834,7 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
} }
/* Copy address just once */ /* Copy address just once */
if (sunaddr) if (sunaddr) {
{
unix_copy_addr(msg, skb->sk); unix_copy_addr(msg, skb->sk);
sunaddr = NULL; sunaddr = NULL;
} }
@@ -1853,16 +1850,14 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
size -= chunk; size -= chunk;
/* Mark read part of skb as used */ /* Mark read part of skb as used */
if (!(flags & MSG_PEEK)) if (!(flags & MSG_PEEK)) {
{
skb_pull(skb, chunk); skb_pull(skb, chunk);
if (UNIXCB(skb).fp) if (UNIXCB(skb).fp)
unix_detach_fds(siocb->scm, skb); unix_detach_fds(siocb->scm, skb);
/* put the skb back if we didn't use it up.. */ /* put the skb back if we didn't use it up.. */
if (skb->len) if (skb->len) {
{
skb_queue_head(&sk->sk_receive_queue, skb); skb_queue_head(&sk->sk_receive_queue, skb);
break; break;
} }
@@ -1871,9 +1866,7 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
if (siocb->scm->fp) if (siocb->scm->fp)
break; break;
} } else {
else
{
/* It is questionable, see note in unix_dgram_recvmsg. /* It is questionable, see note in unix_dgram_recvmsg.
*/ */
if (UNIXCB(skb).fp) if (UNIXCB(skb).fp)
@@ -1939,13 +1932,12 @@ static int unix_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
long amount = 0; long amount = 0;
int err; int err;
switch(cmd) switch (cmd) {
{ case SIOCOUTQ:
case SIOCOUTQ: amount = atomic_read(&sk->sk_wmem_alloc);
amount = atomic_read(&sk->sk_wmem_alloc); err = put_user(amount, (int __user *)arg);
err = put_user(amount, (int __user *)arg); break;
break; case SIOCINQ:
case SIOCINQ:
{ {
struct sk_buff *skb; struct sk_buff *skb;
@@ -1969,14 +1961,14 @@ static int unix_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
break; break;
} }
default: default:
err = -ENOIOCTLCMD; err = -ENOIOCTLCMD;
break; break;
} }
return err; return err;
} }
static unsigned int unix_poll(struct file * file, struct socket *sock, poll_table *wait) static unsigned int unix_poll(struct file *file, struct socket *sock, poll_table *wait)
{ {
struct sock *sk = sock->sk; struct sock *sk = sock->sk;
unsigned int mask; unsigned int mask;
@@ -1998,7 +1990,8 @@ static unsigned int unix_poll(struct file * file, struct socket *sock, poll_tabl
mask |= POLLIN | POLLRDNORM; mask |= POLLIN | POLLRDNORM;
/* Connection-based need to check for termination and startup */ /* Connection-based need to check for termination and startup */
if ((sk->sk_type == SOCK_STREAM || sk->sk_type == SOCK_SEQPACKET) && sk->sk_state == TCP_CLOSE) if ((sk->sk_type == SOCK_STREAM || sk->sk_type == SOCK_SEQPACKET) &&
sk->sk_state == TCP_CLOSE)
mask |= POLLHUP; mask |= POLLHUP;
/* /*