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Date: Mon, 11 Oct 2010 02:24:58 +0200
From: Samuel Ortiz <samuel@...tiz.org>
To: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Samuel Ortiz <samuel@...tiz.org>
Subject: [PATCH net-next 1/5] irda: Remove BKL instances from af_irda.c
Most of the times, lock_kernel() was pointless or could simply be replaced
by lock_sock().
Signed-off-by: Samuel Ortiz <samuel@...tiz.org>
---
net/irda/af_irda.c | 370 +++++++++++++++++++++++++++------------------------
1 files changed, 196 insertions(+), 174 deletions(-)
diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
index bf36351..7f09798 100644
--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -715,14 +715,11 @@ static int irda_getname(struct socket *sock, struct sockaddr *uaddr,
struct sockaddr_irda saddr;
struct sock *sk = sock->sk;
struct irda_sock *self = irda_sk(sk);
- int err;
- lock_kernel();
memset(&saddr, 0, sizeof(saddr));
if (peer) {
- err = -ENOTCONN;
if (sk->sk_state != TCP_ESTABLISHED)
- goto out;
+ return -ENOTCONN;
saddr.sir_family = AF_IRDA;
saddr.sir_lsap_sel = self->dtsap_sel;
@@ -739,10 +736,8 @@ static int irda_getname(struct socket *sock, struct sockaddr *uaddr,
/* uaddr_len come to us uninitialised */
*uaddr_len = sizeof (struct sockaddr_irda);
memcpy(uaddr, &saddr, *uaddr_len);
- err = 0;
-out:
- unlock_kernel();
- return err;
+
+ return 0;
}
/*
@@ -758,7 +753,8 @@ static int irda_listen(struct socket *sock, int backlog)
IRDA_DEBUG(2, "%s()\n", __func__);
- lock_kernel();
+ lock_sock(sk);
+
if ((sk->sk_type != SOCK_STREAM) && (sk->sk_type != SOCK_SEQPACKET) &&
(sk->sk_type != SOCK_DGRAM))
goto out;
@@ -770,7 +766,7 @@ static int irda_listen(struct socket *sock, int backlog)
err = 0;
}
out:
- unlock_kernel();
+ release_sock(sk);
return err;
}
@@ -793,7 +789,7 @@ static int irda_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
if (addr_len != sizeof(struct sockaddr_irda))
return -EINVAL;
- lock_kernel();
+ lock_sock(sk);
#ifdef CONFIG_IRDA_ULTRA
/* Special care for Ultra sockets */
if ((sk->sk_type == SOCK_DGRAM) &&
@@ -836,7 +832,7 @@ static int irda_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
err = 0;
out:
- unlock_kernel();
+ release_sock(sk);
return err;
}
@@ -856,12 +852,13 @@ static int irda_accept(struct socket *sock, struct socket *newsock, int flags)
IRDA_DEBUG(2, "%s()\n", __func__);
- lock_kernel();
err = irda_create(sock_net(sk), newsock, sk->sk_protocol, 0);
if (err)
- goto out;
+ return err;
err = -EINVAL;
+
+ lock_sock(sk);
if (sock->state != SS_UNCONNECTED)
goto out;
@@ -947,7 +944,7 @@ static int irda_accept(struct socket *sock, struct socket *newsock, int flags)
irda_connect_response(new);
err = 0;
out:
- unlock_kernel();
+ release_sock(sk);
return err;
}
@@ -981,7 +978,7 @@ static int irda_connect(struct socket *sock, struct sockaddr *uaddr,
IRDA_DEBUG(2, "%s(%p)\n", __func__, self);
- lock_kernel();
+ lock_sock(sk);
/* Don't allow connect for Ultra sockets */
err = -ESOCKTNOSUPPORT;
if ((sk->sk_type == SOCK_DGRAM) && (sk->sk_protocol == IRDAPROTO_ULTRA))
@@ -1072,6 +1069,8 @@ static int irda_connect(struct socket *sock, struct sockaddr *uaddr,
if (sk->sk_state != TCP_ESTABLISHED) {
sock->state = SS_UNCONNECTED;
+ if (sk->sk_prot->disconnect(sk, flags))
+ sock->state = SS_DISCONNECTING;
err = sock_error(sk);
if (!err)
err = -ECONNRESET;
@@ -1084,7 +1083,7 @@ static int irda_connect(struct socket *sock, struct sockaddr *uaddr,
self->saddr = irttp_get_saddr(self->tsap);
err = 0;
out:
- unlock_kernel();
+ release_sock(sk);
return err;
}
@@ -1231,7 +1230,6 @@ static int irda_release(struct socket *sock)
if (sk == NULL)
return 0;
- lock_kernel();
lock_sock(sk);
sk->sk_state = TCP_CLOSE;
sk->sk_shutdown |= SEND_SHUTDOWN;
@@ -1250,7 +1248,6 @@ static int irda_release(struct socket *sock)
/* Destroy networking socket if we are the last reference on it,
* i.e. if(sk->sk_refcnt == 0) -> sk_free(sk) */
sock_put(sk);
- unlock_kernel();
/* Notes on socket locking and deallocation... - Jean II
* In theory we should put pairs of sock_hold() / sock_put() to
@@ -1298,7 +1295,6 @@ static int irda_sendmsg(struct kiocb *iocb, struct socket *sock,
IRDA_DEBUG(4, "%s(), len=%zd\n", __func__, len);
- lock_kernel();
/* Note : socket.c set MSG_EOR on SEQPACKET sockets */
if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_EOR | MSG_CMSG_COMPAT |
MSG_NOSIGNAL)) {
@@ -1306,6 +1302,8 @@ static int irda_sendmsg(struct kiocb *iocb, struct socket *sock,
goto out;
}
+ lock_sock(sk);
+
if (sk->sk_shutdown & SEND_SHUTDOWN)
goto out_err;
@@ -1361,14 +1359,14 @@ static int irda_sendmsg(struct kiocb *iocb, struct socket *sock,
goto out_err;
}
- unlock_kernel();
+ release_sock(sk);
/* Tell client how much data we actually sent */
return len;
out_err:
err = sk_stream_error(sk, msg->msg_flags, err);
out:
- unlock_kernel();
+ release_sock(sk);
return err;
}
@@ -1390,14 +1388,10 @@ static int irda_recvmsg_dgram(struct kiocb *iocb, struct socket *sock,
IRDA_DEBUG(4, "%s()\n", __func__);
- lock_kernel();
- if ((err = sock_error(sk)) < 0)
- goto out;
-
skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
flags & MSG_DONTWAIT, &err);
if (!skb)
- goto out;
+ return err;
skb_reset_transport_header(skb);
copied = skb->len;
@@ -1425,12 +1419,8 @@ static int irda_recvmsg_dgram(struct kiocb *iocb, struct socket *sock,
irttp_flow_request(self->tsap, FLOW_START);
}
}
- unlock_kernel();
- return copied;
-out:
- unlock_kernel();
- return err;
+ return copied;
}
/*
@@ -1448,17 +1438,15 @@ static int irda_recvmsg_stream(struct kiocb *iocb, struct socket *sock,
IRDA_DEBUG(3, "%s()\n", __func__);
- lock_kernel();
if ((err = sock_error(sk)) < 0)
- goto out;
+ return err;
- err = -EINVAL;
if (sock->flags & __SO_ACCEPTCON)
- goto out;
+ return -EINVAL;
err =-EOPNOTSUPP;
if (flags & MSG_OOB)
- goto out;
+ return -EOPNOTSUPP;
err = 0;
target = sock_rcvlowat(sk, flags & MSG_WAITALL, size);
@@ -1500,7 +1488,7 @@ static int irda_recvmsg_stream(struct kiocb *iocb, struct socket *sock,
finish_wait(sk_sleep(sk), &wait);
if (err)
- goto out;
+ return err;
if (sk->sk_shutdown & RCV_SHUTDOWN)
break;
@@ -1553,9 +1541,7 @@ static int irda_recvmsg_stream(struct kiocb *iocb, struct socket *sock,
}
}
-out:
- unlock_kernel();
- return err ? : copied;
+ return copied;
}
/*
@@ -1573,13 +1559,12 @@ static int irda_sendmsg_dgram(struct kiocb *iocb, struct socket *sock,
struct sk_buff *skb;
int err;
- lock_kernel();
-
IRDA_DEBUG(4, "%s(), len=%zd\n", __func__, len);
- err = -EINVAL;
if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
- goto out;
+ return -EINVAL;
+
+ lock_sock(sk);
if (sk->sk_shutdown & SEND_SHUTDOWN) {
send_sig(SIGPIPE, current, 0);
@@ -1630,10 +1615,12 @@ static int irda_sendmsg_dgram(struct kiocb *iocb, struct socket *sock,
IRDA_DEBUG(0, "%s(), err=%d\n", __func__, err);
goto out;
}
- unlock_kernel();
+
+ release_sock(sk);
return len;
+
out:
- unlock_kernel();
+ release_sock(sk);
return err;
}
@@ -1656,10 +1643,11 @@ static int irda_sendmsg_ultra(struct kiocb *iocb, struct socket *sock,
IRDA_DEBUG(4, "%s(), len=%zd\n", __func__, len);
- lock_kernel();
err = -EINVAL;
if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
- goto out;
+ return -EINVAL;
+
+ lock_sock(sk);
err = -EPIPE;
if (sk->sk_shutdown & SEND_SHUTDOWN) {
@@ -1732,7 +1720,7 @@ static int irda_sendmsg_ultra(struct kiocb *iocb, struct socket *sock,
if (err)
IRDA_DEBUG(0, "%s(), err=%d\n", __func__, err);
out:
- unlock_kernel();
+ release_sock(sk);
return err ? : len;
}
#endif /* CONFIG_IRDA_ULTRA */
@@ -1747,7 +1735,7 @@ static int irda_shutdown(struct socket *sock, int how)
IRDA_DEBUG(1, "%s(%p)\n", __func__, self);
- lock_kernel();
+ lock_sock(sk);
sk->sk_state = TCP_CLOSE;
sk->sk_shutdown |= SEND_SHUTDOWN;
@@ -1769,7 +1757,7 @@ static int irda_shutdown(struct socket *sock, int how)
self->daddr = DEV_ADDR_ANY; /* Until we get re-connected */
self->saddr = 0x0; /* so IrLMP assign us any link */
- unlock_kernel();
+ release_sock(sk);
return 0;
}
@@ -1786,7 +1774,6 @@ static unsigned int irda_poll(struct file * file, struct socket *sock,
IRDA_DEBUG(4, "%s()\n", __func__);
- lock_kernel();
poll_wait(file, sk_sleep(sk), wait);
mask = 0;
@@ -1834,20 +1821,8 @@ static unsigned int irda_poll(struct file * file, struct socket *sock,
default:
break;
}
- unlock_kernel();
- return mask;
-}
-static unsigned int irda_datagram_poll(struct file *file, struct socket *sock,
- poll_table *wait)
-{
- int err;
-
- lock_kernel();
- err = datagram_poll(file, sock, wait);
- unlock_kernel();
-
- return err;
+ return mask;
}
/*
@@ -1860,7 +1835,6 @@ static int irda_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
IRDA_DEBUG(4, "%s(), cmd=%#x\n", __func__, cmd);
- lock_kernel();
err = -EINVAL;
switch (cmd) {
case TIOCOUTQ: {
@@ -1903,7 +1877,6 @@ static int irda_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
IRDA_DEBUG(1, "%s(), doing device ioctl!\n", __func__);
err = -ENOIOCTLCMD;
}
- unlock_kernel();
return err;
}
@@ -1927,7 +1900,7 @@ static int irda_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned lon
* Set some options for the socket
*
*/
-static int __irda_setsockopt(struct socket *sock, int level, int optname,
+static int irda_setsockopt(struct socket *sock, int level, int optname,
char __user *optval, unsigned int optlen)
{
struct sock *sk = sock->sk;
@@ -1935,13 +1908,15 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
struct irda_ias_set *ias_opt;
struct ias_object *ias_obj;
struct ias_attrib * ias_attr; /* Attribute in IAS object */
- int opt, free_ias = 0;
+ int opt, free_ias = 0, err = 0;
IRDA_DEBUG(2, "%s(%p)\n", __func__, self);
if (level != SOL_IRLMP)
return -ENOPROTOOPT;
+ lock_sock(sk);
+
switch (optname) {
case IRLMP_IAS_SET:
/* The user want to add an attribute to an existing IAS object
@@ -1951,17 +1926,22 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
* create the right attribute...
*/
- if (optlen != sizeof(struct irda_ias_set))
- return -EINVAL;
+ if (optlen != sizeof(struct irda_ias_set)) {
+ err = -EINVAL;
+ goto out;
+ }
ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC);
- if (ias_opt == NULL)
- return -ENOMEM;
+ if (ias_opt == NULL) {
+ err = -ENOMEM;
+ goto out;
+ }
/* Copy query to the driver. */
if (copy_from_user(ias_opt, optval, optlen)) {
kfree(ias_opt);
- return -EFAULT;
+ err = -EFAULT;
+ goto out;
}
/* Find the object we target.
@@ -1971,7 +1951,8 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
if(ias_opt->irda_class_name[0] == '\0') {
if(self->ias_obj == NULL) {
kfree(ias_opt);
- return -EINVAL;
+ err = -EINVAL;
+ goto out;
}
ias_obj = self->ias_obj;
} else
@@ -1983,7 +1964,8 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
if((!capable(CAP_NET_ADMIN)) &&
((ias_obj == NULL) || (ias_obj != self->ias_obj))) {
kfree(ias_opt);
- return -EPERM;
+ err = -EPERM;
+ goto out;
}
/* If the object doesn't exist, create it */
@@ -1993,7 +1975,8 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
jiffies);
if (ias_obj == NULL) {
kfree(ias_opt);
- return -ENOMEM;
+ err = -ENOMEM;
+ goto out;
}
free_ias = 1;
}
@@ -2005,7 +1988,8 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
kfree(ias_obj->name);
kfree(ias_obj);
}
- return -EINVAL;
+ err = -EINVAL;
+ goto out;
}
/* Look at the type */
@@ -2028,7 +2012,8 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
kfree(ias_obj);
}
- return -EINVAL;
+ err = -EINVAL;
+ goto out;
}
/* Add an octet sequence attribute */
irias_add_octseq_attrib(
@@ -2060,7 +2045,8 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
kfree(ias_obj->name);
kfree(ias_obj);
}
- return -EINVAL;
+ err = -EINVAL;
+ goto out;
}
irias_insert_object(ias_obj);
kfree(ias_opt);
@@ -2071,17 +2057,22 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
* object is not owned by the kernel and delete it.
*/
- if (optlen != sizeof(struct irda_ias_set))
- return -EINVAL;
+ if (optlen != sizeof(struct irda_ias_set)) {
+ err = -EINVAL;
+ goto out;
+ }
ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC);
- if (ias_opt == NULL)
- return -ENOMEM;
+ if (ias_opt == NULL) {
+ err = -ENOMEM;
+ goto out;
+ }
/* Copy query to the driver. */
if (copy_from_user(ias_opt, optval, optlen)) {
kfree(ias_opt);
- return -EFAULT;
+ err = -EFAULT;
+ goto out;
}
/* Find the object we target.
@@ -2094,7 +2085,8 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
ias_obj = irias_find_object(ias_opt->irda_class_name);
if(ias_obj == (struct ias_object *) NULL) {
kfree(ias_opt);
- return -EINVAL;
+ err = -EINVAL;
+ goto out;
}
/* Only ROOT can mess with the global IAS database.
@@ -2103,7 +2095,8 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
if((!capable(CAP_NET_ADMIN)) &&
((ias_obj == NULL) || (ias_obj != self->ias_obj))) {
kfree(ias_opt);
- return -EPERM;
+ err = -EPERM;
+ goto out;
}
/* Find the attribute (in the object) we target */
@@ -2111,14 +2104,16 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
ias_opt->irda_attrib_name);
if(ias_attr == (struct ias_attrib *) NULL) {
kfree(ias_opt);
- return -EINVAL;
+ err = -EINVAL;
+ goto out;
}
/* Check is the user space own the object */
if(ias_attr->value->owner != IAS_USER_ATTR) {
IRDA_DEBUG(1, "%s(), attempting to delete a kernel attribute\n", __func__);
kfree(ias_opt);
- return -EPERM;
+ err = -EPERM;
+ goto out;
}
/* Remove the attribute (and maybe the object) */
@@ -2126,11 +2121,15 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
kfree(ias_opt);
break;
case IRLMP_MAX_SDU_SIZE:
- if (optlen < sizeof(int))
- return -EINVAL;
+ if (optlen < sizeof(int)) {
+ err = -EINVAL;
+ goto out;
+ }
- if (get_user(opt, (int __user *)optval))
- return -EFAULT;
+ if (get_user(opt, (int __user *)optval)) {
+ err = -EFAULT;
+ goto out;
+ }
/* Only possible for a seqpacket service (TTP with SAR) */
if (sk->sk_type != SOCK_SEQPACKET) {
@@ -2140,16 +2139,21 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
} else {
IRDA_WARNING("%s: not allowed to set MAXSDUSIZE for this socket type!\n",
__func__);
- return -ENOPROTOOPT;
+ err = -ENOPROTOOPT;
+ goto out;
}
break;
case IRLMP_HINTS_SET:
- if (optlen < sizeof(int))
- return -EINVAL;
+ if (optlen < sizeof(int)) {
+ err = -EINVAL;
+ goto out;
+ }
/* The input is really a (__u8 hints[2]), easier as an int */
- if (get_user(opt, (int __user *)optval))
- return -EFAULT;
+ if (get_user(opt, (int __user *)optval)) {
+ err = -EFAULT;
+ goto out;
+ }
/* Unregister any old registration */
if (self->skey)
@@ -2163,12 +2167,16 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
* making a discovery (nodes which don't match any hint
* bit in the mask are not reported).
*/
- if (optlen < sizeof(int))
- return -EINVAL;
+ if (optlen < sizeof(int)) {
+ err = -EINVAL;
+ goto out;
+ }
/* The input is really a (__u8 hints[2]), easier as an int */
- if (get_user(opt, (int __user *)optval))
- return -EFAULT;
+ if (get_user(opt, (int __user *)optval)) {
+ err = -EFAULT;
+ goto out;
+ }
/* Set the new hint mask */
self->mask.word = (__u16) opt;
@@ -2180,19 +2188,12 @@ static int __irda_setsockopt(struct socket *sock, int level, int optname,
break;
default:
- return -ENOPROTOOPT;
+ err = -ENOPROTOOPT;
+ break;
}
- return 0;
-}
-static int irda_setsockopt(struct socket *sock, int level, int optname,
- char __user *optval, unsigned int optlen)
-{
- int err;
-
- lock_kernel();
- err = __irda_setsockopt(sock, level, optname, optval, optlen);
- unlock_kernel();
+out:
+ release_sock(sk);
return err;
}
@@ -2249,7 +2250,7 @@ static int irda_extract_ias_value(struct irda_ias_set *ias_opt,
/*
* Function irda_getsockopt (sock, level, optname, optval, optlen)
*/
-static int __irda_getsockopt(struct socket *sock, int level, int optname,
+static int irda_getsockopt(struct socket *sock, int level, int optname,
char __user *optval, int __user *optlen)
{
struct sock *sk = sock->sk;
@@ -2262,7 +2263,7 @@ static int __irda_getsockopt(struct socket *sock, int level, int optname,
int daddr = DEV_ADDR_ANY; /* Dest address for IAS queries */
int val = 0;
int len = 0;
- int err;
+ int err = 0;
int offset, total;
IRDA_DEBUG(2, "%s(%p)\n", __func__, self);
@@ -2276,15 +2277,18 @@ static int __irda_getsockopt(struct socket *sock, int level, int optname,
if(len < 0)
return -EINVAL;
+ lock_sock(sk);
+
switch (optname) {
case IRLMP_ENUMDEVICES:
/* Ask lmp for the current discovery log */
discoveries = irlmp_get_discoveries(&list.len, self->mask.word,
self->nslots);
/* Check if the we got some results */
- if (discoveries == NULL)
- return -EAGAIN; /* Didn't find any devices */
- err = 0;
+ if (discoveries == NULL) {
+ err = -EAGAIN;
+ goto out; /* Didn't find any devices */
+ }
/* Write total list length back to client */
if (copy_to_user(optval, &list,
@@ -2297,8 +2301,7 @@ static int __irda_getsockopt(struct socket *sock, int level, int optname,
sizeof(struct irda_device_info);
/* Copy the list itself - watch for overflow */
- if(list.len > 2048)
- {
+ if (list.len > 2048) {
err = -EINVAL;
goto bed;
}
@@ -2314,17 +2317,20 @@ static int __irda_getsockopt(struct socket *sock, int level, int optname,
bed:
/* Free up our buffer */
kfree(discoveries);
- if (err)
- return err;
break;
case IRLMP_MAX_SDU_SIZE:
val = self->max_data_size;
len = sizeof(int);
- if (put_user(len, optlen))
- return -EFAULT;
+ if (put_user(len, optlen)) {
+ err = -EFAULT;
+ goto out;
+ }
+
+ if (copy_to_user(optval, &val, len)) {
+ err = -EFAULT;
+ goto out;
+ }
- if (copy_to_user(optval, &val, len))
- return -EFAULT;
break;
case IRLMP_IAS_GET:
/* The user want an object from our local IAS database.
@@ -2332,17 +2338,22 @@ bed:
* that we found */
/* Check that the user has allocated the right space for us */
- if (len != sizeof(struct irda_ias_set))
- return -EINVAL;
+ if (len != sizeof(struct irda_ias_set)) {
+ err = -EINVAL;
+ goto out;
+ }
ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC);
- if (ias_opt == NULL)
- return -ENOMEM;
+ if (ias_opt == NULL) {
+ err = -ENOMEM;
+ goto out;
+ }
/* Copy query to the driver. */
if (copy_from_user(ias_opt, optval, len)) {
kfree(ias_opt);
- return -EFAULT;
+ err = -EFAULT;
+ goto out;
}
/* Find the object we target.
@@ -2355,7 +2366,8 @@ bed:
ias_obj = irias_find_object(ias_opt->irda_class_name);
if(ias_obj == (struct ias_object *) NULL) {
kfree(ias_opt);
- return -EINVAL;
+ err = -EINVAL;
+ goto out;
}
/* Find the attribute (in the object) we target */
@@ -2363,21 +2375,23 @@ bed:
ias_opt->irda_attrib_name);
if(ias_attr == (struct ias_attrib *) NULL) {
kfree(ias_opt);
- return -EINVAL;
+ err = -EINVAL;
+ goto out;
}
/* Translate from internal to user structure */
err = irda_extract_ias_value(ias_opt, ias_attr->value);
if(err) {
kfree(ias_opt);
- return err;
+ goto out;
}
/* Copy reply to the user */
if (copy_to_user(optval, ias_opt,
sizeof(struct irda_ias_set))) {
kfree(ias_opt);
- return -EFAULT;
+ err = -EFAULT;
+ goto out;
}
/* Note : don't need to put optlen, we checked it */
kfree(ias_opt);
@@ -2388,17 +2402,22 @@ bed:
* then wait for the answer to come back. */
/* Check that the user has allocated the right space for us */
- if (len != sizeof(struct irda_ias_set))
- return -EINVAL;
+ if (len != sizeof(struct irda_ias_set)) {
+ err = -EINVAL;
+ goto out;
+ }
ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC);
- if (ias_opt == NULL)
- return -ENOMEM;
+ if (ias_opt == NULL) {
+ err = -ENOMEM;
+ goto out;
+ }
/* Copy query to the driver. */
if (copy_from_user(ias_opt, optval, len)) {
kfree(ias_opt);
- return -EFAULT;
+ err = -EFAULT;
+ goto out;
}
/* At this point, there are two cases...
@@ -2419,7 +2438,8 @@ bed:
daddr = ias_opt->daddr;
if((!daddr) || (daddr == DEV_ADDR_ANY)) {
kfree(ias_opt);
- return -EINVAL;
+ err = -EINVAL;
+ goto out;
}
}
@@ -2428,7 +2448,8 @@ bed:
IRDA_WARNING("%s: busy with a previous query\n",
__func__);
kfree(ias_opt);
- return -EBUSY;
+ err = -EBUSY;
+ goto out;
}
self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self,
@@ -2436,7 +2457,8 @@ bed:
if (self->iriap == NULL) {
kfree(ias_opt);
- return -ENOMEM;
+ err = -ENOMEM;
+ goto out;
}
/* Treat unexpected wakeup as disconnect */
@@ -2455,7 +2477,8 @@ bed:
* we can free it regardless! */
kfree(ias_opt);
/* Treat signals as disconnect */
- return -EHOSTUNREACH;
+ err = -EHOSTUNREACH;
+ goto out;
}
/* Check what happened */
@@ -2465,9 +2488,11 @@ bed:
/* Requested object/attribute doesn't exist */
if((self->errno == IAS_CLASS_UNKNOWN) ||
(self->errno == IAS_ATTRIB_UNKNOWN))
- return -EADDRNOTAVAIL;
+ err = -EADDRNOTAVAIL;
else
- return -EHOSTUNREACH;
+ err = -EHOSTUNREACH;
+
+ goto out;
}
/* Translate from internal to user structure */
@@ -2476,14 +2501,15 @@ bed:
irias_delete_value(self->ias_result);
if (err) {
kfree(ias_opt);
- return err;
+ goto out;
}
/* Copy reply to the user */
if (copy_to_user(optval, ias_opt,
sizeof(struct irda_ias_set))) {
kfree(ias_opt);
- return -EFAULT;
+ err = -EFAULT;
+ goto out;
}
/* Note : don't need to put optlen, we checked it */
kfree(ias_opt);
@@ -2504,11 +2530,15 @@ bed:
*/
/* Check that the user is passing us an int */
- if (len != sizeof(int))
- return -EINVAL;
+ if (len != sizeof(int)) {
+ err = -EINVAL;
+ goto out;
+ }
/* Get timeout in ms (max time we block the caller) */
- if (get_user(val, (int __user *)optval))
- return -EFAULT;
+ if (get_user(val, (int __user *)optval)) {
+ err = -EFAULT;
+ goto out;
+ }
/* Tell IrLMP we want to be notified */
irlmp_update_client(self->ckey, self->mask.word,
@@ -2520,8 +2550,6 @@ bed:
/* Wait until a node is discovered */
if (!self->cachedaddr) {
- int ret = 0;
-
IRDA_DEBUG(1, "%s(), nothing discovered yet, going to sleep...\n", __func__);
/* Set watchdog timer to expire in <val> ms. */
@@ -2534,7 +2562,7 @@ bed:
/* Wait for IR-LMP to call us back */
__wait_event_interruptible(self->query_wait,
(self->cachedaddr != 0 || self->errno == -ETIME),
- ret);
+ err);
/* If watchdog is still activated, kill it! */
if(timer_pending(&(self->watchdog)))
@@ -2542,8 +2570,8 @@ bed:
IRDA_DEBUG(1, "%s(), ...waking up !\n", __func__);
- if (ret != 0)
- return ret;
+ if (err != 0)
+ goto out;
}
else
IRDA_DEBUG(1, "%s(), found immediately !\n",
@@ -2566,25 +2594,19 @@ bed:
* If the user want more details, he should query
* the whole discovery log and pick one device...
*/
- if (put_user(daddr, (int __user *)optval))
- return -EFAULT;
+ if (put_user(daddr, (int __user *)optval)) {
+ err = -EFAULT;
+ goto out;
+ }
break;
default:
- return -ENOPROTOOPT;
+ err = -ENOPROTOOPT;
}
- return 0;
-}
-
-static int irda_getsockopt(struct socket *sock, int level, int optname,
- char __user *optval, int __user *optlen)
-{
- int err;
+out:
- lock_kernel();
- err = __irda_getsockopt(sock, level, optname, optval, optlen);
- unlock_kernel();
+ release_sock(sk);
return err;
}
@@ -2628,7 +2650,7 @@ static const struct proto_ops irda_seqpacket_ops = {
.socketpair = sock_no_socketpair,
.accept = irda_accept,
.getname = irda_getname,
- .poll = irda_datagram_poll,
+ .poll = datagram_poll,
.ioctl = irda_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = irda_compat_ioctl,
@@ -2652,7 +2674,7 @@ static const struct proto_ops irda_dgram_ops = {
.socketpair = sock_no_socketpair,
.accept = irda_accept,
.getname = irda_getname,
- .poll = irda_datagram_poll,
+ .poll = datagram_poll,
.ioctl = irda_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = irda_compat_ioctl,
@@ -2677,7 +2699,7 @@ static const struct proto_ops irda_ultra_ops = {
.socketpair = sock_no_socketpair,
.accept = sock_no_accept,
.getname = irda_getname,
- .poll = irda_datagram_poll,
+ .poll = datagram_poll,
.ioctl = irda_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = irda_compat_ioctl,
--
1.7.1
--
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