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Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c729
1 files changed, 388 insertions, 341 deletions
diff --git a/net/socket.c b/net/socket.c
index 2eaebf934a1a..156f2efa4e4a 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -42,7 +42,7 @@
* Andi Kleen : Some small cleanups, optimizations,
* and fixed a copy_from_user() bug.
* Tigran Aivazian : sys_send(args) calls sys_sendto(args, NULL, 0)
- * Tigran Aivazian : Made listen(2) backlog sanity checks
+ * Tigran Aivazian : Made listen(2) backlog sanity checks
* protocol-independent
*
*
@@ -53,7 +53,7 @@
*
*
* This module is effectively the top level interface to the BSD socket
- * paradigm.
+ * paradigm.
*
* Based upon Swansea University Computer Society NET3.039
*/
@@ -96,25 +96,24 @@
static int sock_no_open(struct inode *irrelevant, struct file *dontcare);
static ssize_t sock_aio_read(struct kiocb *iocb, char __user *buf,
- size_t size, loff_t pos);
+ size_t size, loff_t pos);
static ssize_t sock_aio_write(struct kiocb *iocb, const char __user *buf,
- size_t size, loff_t pos);
-static int sock_mmap(struct file *file, struct vm_area_struct * vma);
+ size_t size, loff_t pos);
+static int sock_mmap(struct file *file, struct vm_area_struct *vma);
static int sock_close(struct inode *inode, struct file *file);
static unsigned int sock_poll(struct file *file,
struct poll_table_struct *wait);
-static long sock_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg);
+static long sock_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
#ifdef CONFIG_COMPAT
static long compat_sock_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg);
+ unsigned int cmd, unsigned long arg);
#endif
static int sock_fasync(int fd, struct file *filp, int on);
static ssize_t sock_readv(struct file *file, const struct iovec *vector,
unsigned long count, loff_t *ppos);
static ssize_t sock_writev(struct file *file, const struct iovec *vector,
- unsigned long count, loff_t *ppos);
+ unsigned long count, loff_t *ppos);
static ssize_t sock_sendpage(struct file *file, struct page *page,
int offset, size_t size, loff_t *ppos, int more);
@@ -193,7 +192,6 @@ static __inline__ void net_family_read_unlock(void)
#define net_family_read_unlock() do { } while(0)
#endif
-
/*
* Statistics counters of the socket lists
*/
@@ -201,19 +199,20 @@ static __inline__ void net_family_read_unlock(void)
static DEFINE_PER_CPU(int, sockets_in_use) = 0;
/*
- * Support routines. Move socket addresses back and forth across the kernel/user
- * divide and look after the messy bits.
+ * Support routines.
+ * Move socket addresses back and forth across the kernel/user
+ * divide and look after the messy bits.
*/
-#define MAX_SOCK_ADDR 128 /* 108 for Unix domain -
+#define MAX_SOCK_ADDR 128 /* 108 for Unix domain -
16 for IP, 16 for IPX,
24 for IPv6,
- about 80 for AX.25
+ about 80 for AX.25
must be at least one bigger than
the AF_UNIX size (see net/unix/af_unix.c
- :unix_mkname()).
+ :unix_mkname()).
*/
-
+
/**
* move_addr_to_kernel - copy a socket address into kernel space
* @uaddr: Address in user space
@@ -227,11 +226,11 @@ static DEFINE_PER_CPU(int, sockets_in_use) = 0;
int move_addr_to_kernel(void __user *uaddr, int ulen, void *kaddr)
{
- if(ulen<0||ulen>MAX_SOCK_ADDR)
+ if (ulen < 0 || ulen > MAX_SOCK_ADDR)
return -EINVAL;
- if(ulen==0)
+ if (ulen == 0)
return 0;
- if(copy_from_user(kaddr,uaddr,ulen))
+ if (copy_from_user(kaddr, uaddr, ulen))
return -EFAULT;
return audit_sockaddr(ulen, kaddr);
}
@@ -252,44 +251,46 @@ int move_addr_to_kernel(void __user *uaddr, int ulen, void *kaddr)
* length of the data is written over the length limit the user
* specified. Zero is returned for a success.
*/
-
-int move_addr_to_user(void *kaddr, int klen, void __user *uaddr, int __user *ulen)
+
+int move_addr_to_user(void *kaddr, int klen, void __user *uaddr,
+ int __user *ulen)
{
int err;
int len;
- if((err=get_user(len, ulen)))
+ err = get_user(len, ulen);
+ if (err)
return err;
- if(len>klen)
- len=klen;
- if(len<0 || len> MAX_SOCK_ADDR)
+ if (len > klen)
+ len = klen;
+ if (len < 0 || len > MAX_SOCK_ADDR)
return -EINVAL;
- if(len)
- {
+ if (len) {
if (audit_sockaddr(klen, kaddr))
return -ENOMEM;
- if(copy_to_user(uaddr,kaddr,len))
+ if (copy_to_user(uaddr, kaddr, len))
return -EFAULT;
}
/*
- * "fromlen shall refer to the value before truncation.."
- * 1003.1g
+ * "fromlen shall refer to the value before truncation.."
+ * 1003.1g
*/
return __put_user(klen, ulen);
}
#define SOCKFS_MAGIC 0x534F434B
-static kmem_cache_t * sock_inode_cachep __read_mostly;
+static kmem_cache_t *sock_inode_cachep __read_mostly;
static struct inode *sock_alloc_inode(struct super_block *sb)
{
struct socket_alloc *ei;
- ei = (struct socket_alloc *)kmem_cache_alloc(sock_inode_cachep, SLAB_KERNEL);
+
+ ei = kmem_cache_alloc(sock_inode_cachep, SLAB_KERNEL);
if (!ei)
return NULL;
init_waitqueue_head(&ei->socket.wait);
-
+
ei->socket.fasync_list = NULL;
ei->socket.state = SS_UNCONNECTED;
ei->socket.flags = 0;
@@ -307,22 +308,25 @@ static void sock_destroy_inode(struct inode *inode)
container_of(inode, struct socket_alloc, vfs_inode));
}
-static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
+static void init_once(void *foo, kmem_cache_t *cachep, unsigned long flags)
{
- struct socket_alloc *ei = (struct socket_alloc *) foo;
+ struct socket_alloc *ei = (struct socket_alloc *)foo;
- if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
- SLAB_CTOR_CONSTRUCTOR)
+ if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR))
+ == SLAB_CTOR_CONSTRUCTOR)
inode_init_once(&ei->vfs_inode);
}
-
+
static int init_inodecache(void)
{
sock_inode_cachep = kmem_cache_create("sock_inode_cache",
- sizeof(struct socket_alloc),
- 0, (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
- SLAB_MEM_SPREAD),
- init_once, NULL);
+ sizeof(struct socket_alloc),
+ 0,
+ (SLAB_HWCACHE_ALIGN |
+ SLAB_RECLAIM_ACCOUNT |
+ SLAB_MEM_SPREAD),
+ init_once,
+ NULL);
if (sock_inode_cachep == NULL)
return -ENOMEM;
return 0;
@@ -335,7 +339,8 @@ static struct super_operations sockfs_ops = {
};
static int sockfs_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data, struct vfsmount *mnt)
+ int flags, const char *dev_name, void *data,
+ struct vfsmount *mnt)
{
return get_sb_pseudo(fs_type, "socket:", &sockfs_ops, SOCKFS_MAGIC,
mnt);
@@ -348,12 +353,13 @@ static struct file_system_type sock_fs_type = {
.get_sb = sockfs_get_sb,
.kill_sb = kill_anon_super,
};
+
static int sockfs_delete_dentry(struct dentry *dentry)
{
return 1;
}
static struct dentry_operations sockfs_dentry_operations = {
- .d_delete = sockfs_delete_dentry,
+ .d_delete = sockfs_delete_dentry,
};
/*
@@ -477,10 +483,12 @@ struct socket *sockfd_lookup(int fd, int *err)
struct file *file;
struct socket *sock;
- if (!(file = fget(fd))) {
+ file = fget(fd);
+ if (!file) {
*err = -EBADF;
return NULL;
}
+
sock = sock_from_file(file, err);
if (!sock)
fput(file);
@@ -505,7 +513,7 @@ static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed)
/**
* sock_alloc - allocate a socket
- *
+ *
* Allocate a new inode and socket object. The two are bound together
* and initialised. The socket is then returned. If we are out of inodes
* NULL is returned.
@@ -513,8 +521,8 @@ static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed)
static struct socket *sock_alloc(void)
{
- struct inode * inode;
- struct socket * sock;
+ struct inode *inode;
+ struct socket *sock;
inode = new_inode(sock_mnt->mnt_sb);
if (!inode)
@@ -522,7 +530,7 @@ static struct socket *sock_alloc(void)
sock = SOCKET_I(inode);
- inode->i_mode = S_IFSOCK|S_IRWXUGO;
+ inode->i_mode = S_IFSOCK | S_IRWXUGO;
inode->i_uid = current->fsuid;
inode->i_gid = current->fsgid;
@@ -536,7 +544,7 @@ static struct socket *sock_alloc(void)
* a back door. Remember to keep it shut otherwise you'll let the
* creepy crawlies in.
*/
-
+
static int sock_no_open(struct inode *irrelevant, struct file *dontcare)
{
return -ENXIO;
@@ -553,9 +561,9 @@ const struct file_operations bad_sock_fops = {
*
* The socket is released from the protocol stack if it has a release
* callback, and the inode is then released if the socket is bound to
- * an inode not a file.
+ * an inode not a file.
*/
-
+
void sock_release(struct socket *sock)
{
if (sock->ops) {
@@ -575,10 +583,10 @@ void sock_release(struct socket *sock)
iput(SOCK_INODE(sock));
return;
}
- sock->file=NULL;
+ sock->file = NULL;
}
-static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock,
+static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t size)
{
struct sock_iocb *si = kiocb_to_siocb(iocb);
@@ -621,14 +629,14 @@ int kernel_sendmsg(struct socket *sock, struct msghdr *msg,
* the following is safe, since for compiler definitions of kvec and
* iovec are identical, yielding the same in-core layout and alignment
*/
- msg->msg_iov = (struct iovec *)vec,
+ msg->msg_iov = (struct iovec *)vec;
msg->msg_iovlen = num;
result = sock_sendmsg(sock, msg, size);
set_fs(oldfs);
return result;
}
-static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock,
+static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t size, int flags)
{
int err;
@@ -647,14 +655,14 @@ static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock,
return sock->ops->recvmsg(iocb, sock, msg, size, flags);
}
-int sock_recvmsg(struct socket *sock, struct msghdr *msg,
+int sock_recvmsg(struct socket *sock, struct msghdr *msg,
size_t size, int flags)
{
struct kiocb iocb;
struct sock_iocb siocb;
int ret;
- init_sync_kiocb(&iocb, NULL);
+ init_sync_kiocb(&iocb, NULL);
iocb.private = &siocb;
ret = __sock_recvmsg(&iocb, sock, msg, size, flags);
if (-EIOCBQUEUED == ret)
@@ -662,9 +670,8 @@ int sock_recvmsg(struct socket *sock, struct msghdr *msg,
return ret;
}
-int kernel_recvmsg(struct socket *sock, struct msghdr *msg,
- struct kvec *vec, size_t num,
- size_t size, int flags)
+int kernel_recvmsg(struct socket *sock, struct msghdr *msg,
+ struct kvec *vec, size_t num, size_t size, int flags)
{
mm_segment_t oldfs = get_fs();
int result;
@@ -674,8 +681,7 @@ int kernel_recvmsg(struct socket *sock, struct msghdr *msg,
* the following is safe, since for compiler definitions of kvec and
* iovec are identical, yielding the same in-core layout and alignment
*/
- msg->msg_iov = (struct iovec *)vec,
- msg->msg_iovlen = num;
+ msg->msg_iov = (struct iovec *)vec, msg->msg_iovlen = num;
result = sock_recvmsg(sock, msg, size, flags);
set_fs(oldfs);
return result;
@@ -702,7 +708,8 @@ static ssize_t sock_sendpage(struct file *file, struct page *page,
}
static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb,
- char __user *ubuf, size_t size, struct sock_iocb *siocb)
+ char __user *ubuf, size_t size,
+ struct sock_iocb *siocb)
{
if (!is_sync_kiocb(iocb)) {
siocb = kmalloc(sizeof(*siocb), GFP_KERNEL);
@@ -720,20 +727,21 @@ static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb,
}
static ssize_t do_sock_read(struct msghdr *msg, struct kiocb *iocb,
- struct file *file, struct iovec *iov, unsigned long nr_segs)
+ struct file *file, struct iovec *iov,
+ unsigned long nr_segs)
{
struct socket *sock = file->private_data;
size_t size = 0;
int i;
- for (i = 0 ; i < nr_segs ; i++)
- size += iov[i].iov_len;
+ for (i = 0; i < nr_segs; i++)
+ size += iov[i].iov_len;
msg->msg_name = NULL;
msg->msg_namelen = 0;
msg->msg_control = NULL;
msg->msg_controllen = 0;
- msg->msg_iov = (struct iovec *) iov;
+ msg->msg_iov = (struct iovec *)iov;
msg->msg_iovlen = nr_segs;
msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
@@ -748,7 +756,7 @@ static ssize_t sock_readv(struct file *file, const struct iovec *iov,
struct msghdr msg;
int ret;
- init_sync_kiocb(&iocb, NULL);
+ init_sync_kiocb(&iocb, NULL);
iocb.private = &siocb;
ret = do_sock_read(&msg, &iocb, file, (struct iovec *)iov, nr_segs);
@@ -758,7 +766,7 @@ static ssize_t sock_readv(struct file *file, const struct iovec *iov,
}
static ssize_t sock_aio_read(struct kiocb *iocb, char __user *ubuf,
- size_t count, loff_t pos)
+ size_t count, loff_t pos)
{
struct sock_iocb siocb, *x;
@@ -771,24 +779,25 @@ static ssize_t sock_aio_read(struct kiocb *iocb, char __user *ubuf,
if (!x)
return -ENOMEM;
return do_sock_read(&x->async_msg, iocb, iocb->ki_filp,
- &x->async_iov, 1);
+ &x->async_iov, 1);
}
static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb,
- struct file *file, struct iovec *iov, unsigned long nr_segs)
+ struct file *file, struct iovec *iov,
+ unsigned long nr_segs)
{
struct socket *sock = file->private_data;
size_t size = 0;
int i;
- for (i = 0 ; i < nr_segs ; i++)
- size += iov[i].iov_len;
+ for (i = 0; i < nr_segs; i++)
+ size += iov[i].iov_len;
msg->msg_name = NULL;
msg->msg_namelen = 0;
msg->msg_control = NULL;
msg->msg_controllen = 0;
- msg->msg_iov = (struct iovec *) iov;
+ msg->msg_iov = (struct iovec *)iov;
msg->msg_iovlen = nr_segs;
msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
if (sock->type == SOCK_SEQPACKET)
@@ -815,7 +824,7 @@ static ssize_t sock_writev(struct file *file, const struct iovec *iov,
}
static ssize_t sock_aio_write(struct kiocb *iocb, const char __user *ubuf,
- size_t count, loff_t pos)
+ size_t count, loff_t pos)
{
struct sock_iocb siocb, *x;
@@ -829,46 +838,48 @@ static ssize_t sock_aio_write(struct kiocb *iocb, const char __user *ubuf,
return -ENOMEM;
return do_sock_write(&x->async_msg, iocb, iocb->ki_filp,
- &x->async_iov, 1);
+ &x->async_iov, 1);
}
-
/*
* Atomic setting of ioctl hooks to avoid race
* with module unload.
*/
static DEFINE_MUTEX(br_ioctl_mutex);
-static int (*br_ioctl_hook)(unsigned int cmd, void __user *arg) = NULL;
+static int (*br_ioctl_hook) (unsigned int cmd, void __user *arg) = NULL;
-void brioctl_set(int (*hook)(unsigned int, void __user *))
+void brioctl_set(int (*hook) (unsigned int, void __user *))
{
mutex_lock(&br_ioctl_mutex);
br_ioctl_hook = hook;
mutex_unlock(&br_ioctl_mutex);
}
+
EXPORT_SYMBOL(brioctl_set);
static DEFINE_MUTEX(vlan_ioctl_mutex);
-static int (*vlan_ioctl_hook)(void __user *arg);
+static int (*vlan_ioctl_hook) (void __user *arg);
-void vlan_ioctl_set(int (*hook)(void __user *))
+void vlan_ioctl_set(int (*hook) (void __user *))
{
mutex_lock(&vlan_ioctl_mutex);
vlan_ioctl_hook = hook;
mutex_unlock(&vlan_ioctl_mutex);
}
+
EXPORT_SYMBOL(vlan_ioctl_set);
static DEFINE_MUTEX(dlci_ioctl_mutex);
-static int (*dlci_ioctl_hook)(unsigned int, void __user *);
+static int (*dlci_ioctl_hook) (unsigned int, void __user *);
-void dlci_ioctl_set(int (*hook)(unsigned int, void __user *))
+void dlci_ioctl_set(int (*hook) (unsigned int, void __user *))
{
mutex_lock(&dlci_ioctl_mutex);
dlci_ioctl_hook = hook;
mutex_unlock(&dlci_ioctl_mutex);
}
+
EXPORT_SYMBOL(dlci_ioctl_set);
/*
@@ -890,8 +901,8 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) {
err = dev_ioctl(cmd, argp);
} else
-#endif /* CONFIG_WIRELESS_EXT */
- switch (cmd) {
+#endif /* CONFIG_WIRELESS_EXT */
+ switch (cmd) {
case FIOSETOWN:
case SIOCSPGRP:
err = -EFAULT;
@@ -901,7 +912,8 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
break;
case FIOGETOWN:
case SIOCGPGRP:
- err = put_user(sock->file->f_owner.pid, (int __user *)argp);
+ err = put_user(sock->file->f_owner.pid,
+ (int __user *)argp);
break;
case SIOCGIFBR:
case SIOCSIFBR:
@@ -912,7 +924,7 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
request_module("bridge");
mutex_lock(&br_ioctl_mutex);
- if (br_ioctl_hook)
+ if (br_ioctl_hook)
err = br_ioctl_hook(cmd, argp);
mutex_unlock(&br_ioctl_mutex);
break;
@@ -929,7 +941,7 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
break;
case SIOCGIFDIVERT:
case SIOCSIFDIVERT:
- /* Convert this to call through a hook */
+ /* Convert this to call through a hook */
err = divert_ioctl(cmd, argp);
break;
case SIOCADDDLCI:
@@ -954,7 +966,7 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
if (err == -ENOIOCTLCMD)
err = dev_ioctl(cmd, argp);
break;
- }
+ }
return err;
}
@@ -962,7 +974,7 @@ int sock_create_lite(int family, int type, int protocol, struct socket **res)
{
int err;
struct socket *sock = NULL;
-
+
err = security_socket_create(family, type, protocol, 1);
if (err)
goto out;
@@ -988,18 +1000,18 @@ out_release:
}
/* No kernel lock held - perfect */
-static unsigned int sock_poll(struct file *file, poll_table * wait)
+static unsigned int sock_poll(struct file *file, poll_table *wait)
{
struct socket *sock;
/*
- * We can't return errors to poll, so it's either yes or no.
+ * We can't return errors to poll, so it's either yes or no.
*/
sock = file->private_data;
return sock->ops->poll(file, sock, wait);
}
-static int sock_mmap(struct file * file, struct vm_area_struct * vma)
+static int sock_mmap(struct file *file, struct vm_area_struct *vma)
{
struct socket *sock = file->private_data;
@@ -1009,12 +1021,11 @@ static int sock_mmap(struct file * file, struct vm_area_struct * vma)
static int sock_close(struct inode *inode, struct file *filp)
{
/*
- * It was possible the inode is NULL we were
- * closing an unfinished socket.
+ * It was possible the inode is NULL we were
+ * closing an unfinished socket.
*/
- if (!inode)
- {
+ if (!inode) {
printk(KERN_DEBUG "sock_close: NULL inode\n");
return 0;
}
@@ -1040,57 +1051,52 @@ static int sock_close(struct inode *inode, struct file *filp)
static int sock_fasync(int fd, struct file *filp, int on)
{
- struct fasync_struct *fa, *fna=NULL, **prev;
+ struct fasync_struct *fa, *fna = NULL, **prev;
struct socket *sock;
struct sock *sk;
- if (on)
- {
+ if (on) {
fna = kmalloc(sizeof(struct fasync_struct), GFP_KERNEL);
- if(fna==NULL)
+ if (fna == NULL)
return -ENOMEM;
}
sock = filp->private_data;
- if ((sk=sock->sk) == NULL) {
+ sk = sock->sk;
+ if (sk == NULL) {
kfree(fna);
return -EINVAL;
}
lock_sock(sk);
- prev=&(sock->fasync_list);
+ prev = &(sock->fasync_list);
- for (fa=*prev; fa!=NULL; prev=&fa->fa_next,fa=*prev)
- if (fa->fa_file==filp)
+ for (fa = *prev; fa != NULL; prev = &fa->fa_next, fa = *prev)
+ if (fa->fa_file == filp)
break;
- if(on)
- {
- if(fa!=NULL)
- {
+ if (on) {
+ if (fa != NULL) {
write_lock_bh(&sk->sk_callback_lock);
- fa->fa_fd=fd;
+ fa->fa_fd = fd;
write_unlock_bh(&sk->sk_callback_lock);
kfree(fna);
goto out;
}
- fna->fa_file=filp;
- fna->fa_fd=fd;
- fna->magic=FASYNC_MAGIC;
- fna->fa_next=sock->fasync_list;
+ fna->fa_file = filp;
+ fna->fa_fd = fd;
+ fna->magic = FASYNC_MAGIC;
+ fna->fa_next = sock->fasync_list;
write_lock_bh(&sk->sk_callback_lock);
- sock->fasync_list=fna;
+ sock->fasync_list = fna;
write_unlock_bh(&sk->sk_callback_lock);
- }
- else
- {
- if (fa!=NULL)
- {
+ } else {
+ if (fa != NULL) {
write_lock_bh(&sk->sk_callback_lock);
- *prev=fa->fa_next;
+ *prev = fa->fa_next;
write_unlock_bh(&sk->sk_callback_lock);
kfree(fa);
}
@@ -1107,10 +1113,9 @@ int sock_wake_async(struct socket *sock, int how, int band)
{
if (!sock || !sock->fasync_list)
return -1;
- switch (how)
- {
+ switch (how) {
case 1:
-
+
if (test_bit(SOCK_ASYNC_WAITDATA, &sock->flags))
break;
goto call_kill;
@@ -1119,7 +1124,7 @@ int sock_wake_async(struct socket *sock, int how, int band)
break;
/* fall through */
case 0:
- call_kill:
+call_kill:
__kill_fasync(sock->fasync_list, SIGIO, band);
break;
case 3:
@@ -1128,13 +1133,14 @@ int sock_wake_async(struct socket *sock, int how, int band)
return 0;
}
-static int __sock_create(int family, int type, int protocol, struct socket **res, int kern)
+static int __sock_create(int family, int type, int protocol,
+ struct socket **res, int kern)
{
int err;
struct socket *sock;
/*
- * Check protocol is in range
+ * Check protocol is in range
*/
if (family < 0 || family >= NPROTO)
return -EAFNOSUPPORT;
@@ -1147,10 +1153,11 @@ static int __sock_create(int family, int type, int protocol, struct socket **res
deadlock in module load.
*/
if (family == PF_INET && type == SOCK_PACKET) {
- static int warned;
+ static int warned;
if (!warned) {
warned = 1;
- printk(KERN_INFO "%s uses obsolete (PF_INET,SOCK_PACKET)\n", current->comm);
+ printk(KERN_INFO "%s uses obsolete (PF_INET,SOCK_PACKET)\n",
+ current->comm);
}
family = PF_PACKET;
}
@@ -1158,17 +1165,16 @@ static int __sock_create(int family, int type, int protocol, struct socket **res
err = security_socket_create(family, type, protocol, kern);
if (err)
return err;
-
+
#if defined(CONFIG_KMOD)
- /* Attempt to load a protocol module if the find failed.
- *
- * 12/09/1996 Marcin: But! this makes REALLY only sense, if the user
+ /* Attempt to load a protocol module if the find failed.
+ *
+ * 12/09/1996 Marcin: But! this makes REALLY only sense, if the user
* requested real, full-featured networking support upon configuration.
* Otherwise module support will break!
*/
- if (net_families[family]==NULL)
- {
- request_module("net-pf-%d",family);
+ if (net_families[family] == NULL) {
+ request_module("net-pf-%d", family);
}
#endif
@@ -1187,12 +1193,12 @@ static int __sock_create(int family, int type, int protocol, struct socket **res
if (!(sock = sock_alloc())) {
if (net_ratelimit())
printk(KERN_WARNING "socket: no more sockets\n");
- err = -ENFILE; /* Not exactly a match, but its the
- closest posix thing */
+ err = -ENFILE; /* Not exactly a match, but its the
+ closest posix thing */
goto out;
}
- sock->type = type;
+ sock->type = type;
/*
* We will call the ->create function, that possibly is in a loadable
@@ -1271,7 +1277,8 @@ out_release:
* Create a pair of connected sockets.
*/
-asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec)
+asmlinkage long sys_socketpair(int family, int type, int protocol,
+ int __user *usockvec)
{
struct socket *sock1, *sock2;
int fd1, fd2, err;
@@ -1290,7 +1297,7 @@ asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *u
goto out_release_1;
err = sock1->ops->socketpair(sock1, sock2);
- if (err < 0)
+ if (err < 0)
goto out_release_both;
fd1 = fd2 = -1;
@@ -1309,7 +1316,7 @@ asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *u
* Not kernel problem.
*/
- err = put_user(fd1, &usockvec[0]);
+ err = put_user(fd1, &usockvec[0]);
if (!err)
err = put_user(fd2, &usockvec[1]);
if (!err)
@@ -1320,19 +1327,18 @@ asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *u
return err;
out_close_1:
- sock_release(sock2);
+ sock_release(sock2);
sys_close(fd1);
return err;
out_release_both:
- sock_release(sock2);
+ sock_release(sock2);
out_release_1:
- sock_release(sock1);
+ sock_release(sock1);
out:
return err;
}
-
/*
* Bind a name to a socket. Nothing much to do here since it's
* the protocol's responsibility to handle the local address.
@@ -1347,20 +1353,23 @@ asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen)
char address[MAX_SOCK_ADDR];
int err, fput_needed;
- if((sock = sockfd_lookup_light(fd, &err, &fput_needed))!=NULL)
- {
- if((err=move_addr_to_kernel(umyaddr,addrlen,address))>=0) {
- err = security_socket_bind(sock, (struct sockaddr *)address, addrlen);
+ sock = sockfd_lookup_light(fd, &err, &fput_needed);
+ if(sock) {
+ err = move_addr_to_kernel(umyaddr, addrlen, address);
+ if (err >= 0) {
+ err = security_socket_bind(sock,
+ (struct sockaddr *)address,
+ addrlen);
if (!err)
err = sock->ops->bind(sock,
- (struct sockaddr *)address, addrlen);
+ (struct sockaddr *)
+ address, addrlen);
}
fput_light(sock->file, fput_needed);
- }
+ }
return err;
}
-
/*
* Perform a listen. Basically, we allow the protocol to do anything
* necessary for a listen, and if that works, we mark the socket as
@@ -1373,9 +1382,10 @@ asmlinkage long sys_listen(int fd, int backlog)
{
struct socket *sock;
int err, fput_needed;
-
- if ((sock = sockfd_lookup_light(fd, &err, &fput_needed)) != NULL) {
- if ((unsigned) backlog > sysctl_somaxconn)
+
+ sock = sockfd_lookup_light(fd, &err, &fput_needed);
+ if (sock) {
+ if ((unsigned)backlog > sysctl_somaxconn)
backlog = sysctl_somaxconn;
err = security_socket_listen(sock, backlog);
@@ -1387,7 +1397,6 @@ asmlinkage long sys_listen(int fd, int backlog)
return err;
}
-
/*
* For accept, we attempt to create a new socket, set up the link
* with the client, wake up the client, then return the new
@@ -1400,7 +1409,8 @@ asmlinkage long sys_listen(int fd, int backlog)
* clean when we restucture accept also.
*/
-asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen)
+asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr,
+ int __user *upeer_addrlen)
{
struct socket *sock, *newsock;
struct file *newfile;
@@ -1412,7 +1422,7 @@ asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int _
goto out;
err = -ENFILE;
- if (!(newsock = sock_alloc()))
+ if (!(newsock = sock_alloc()))
goto out_put;
newsock->type = sock->type;
@@ -1444,11 +1454,13 @@ asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int _
goto out_fd;
if (upeer_sockaddr) {
- if(newsock->ops->getname(newsock, (struct sockaddr *)address, &len, 2)<0) {
+ if (newsock->ops->getname(newsock, (struct sockaddr *)address,
+ &len, 2) < 0) {
err = -ECONNABORTED;
goto out_fd;
}
- err = move_addr_to_user(address, len, upeer_sockaddr, upeer_addrlen);
+ err = move_addr_to_user(address, len, upeer_sockaddr,
+ upeer_addrlen);
if (err < 0)
goto out_fd;
}
@@ -1470,7 +1482,6 @@ out_fd:
goto out_put;
}
-
/*
* Attempt to connect to a socket with the server address. The address
* is in user space so we verify it is OK and move it to kernel space.
@@ -1483,7 +1494,8 @@ out_fd:
* include the -EINPROGRESS status for such sockets.
*/
-asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen)
+asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr,
+ int addrlen)
{
struct socket *sock;
char address[MAX_SOCK_ADDR];
@@ -1496,11 +1508,12 @@ asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrl
if (err < 0)
goto out_put;
- err = security_socket_connect(sock, (struct sockaddr *)address, addrlen);
+ err =
+ security_socket_connect(sock, (struct sockaddr *)address, addrlen);
if (err)
goto out_put;
- err = sock->ops->connect(sock, (struct sockaddr *) address, addrlen,
+ err = sock->ops->connect(sock, (struct sockaddr *)address, addrlen,
sock->file->f_flags);
out_put:
fput_light(sock->file, fput_needed);
@@ -1513,12 +1526,13 @@ out:
* name to user space.
*/
-asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len)
+asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr,
+ int __user *usockaddr_len)
{
struct socket *sock;
char address[MAX_SOCK_ADDR];
int len, err, fput_needed;
-
+
sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (!sock)
goto out;
@@ -1543,22 +1557,27 @@ out:
* name to user space.
*/
-asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len)
+asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr,
+ int __user *usockaddr_len)
{
struct socket *sock;
char address[MAX_SOCK_ADDR];
int len, err, fput_needed;
- if ((sock = sockfd_lookup_light(fd, &err, &fput_needed)) != NULL) {
+ 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->ops->getname(sock, (struct sockaddr *)address, &len,
+ 1);
if (!err)
- err=move_addr_to_user(address,len, usockaddr, usockaddr_len);
+ err = move_addr_to_user(address, len, usockaddr,
+ usockaddr_len);
fput_light(sock->file, fput_needed);
}
return err;
@@ -1570,8 +1589,9 @@ asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int _
* the protocol.
*/
-asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags,
- struct sockaddr __user *addr, int addr_len)
+asmlinkage long sys_sendto(int fd, void __user *buff, size_t len,
+ unsigned flags, struct sockaddr __user *addr,
+ int addr_len)
{
struct socket *sock;
char address[MAX_SOCK_ADDR];
@@ -1588,54 +1608,55 @@ asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flag
sock = sock_from_file(sock_file, &err);
if (!sock)
goto out_put;
- iov.iov_base=buff;
- iov.iov_len=len;
- msg.msg_name=NULL;
- msg.msg_iov=&iov;
- msg.msg_iovlen=1;
- msg.msg_control=NULL;
- msg.msg_controllen=0;
- msg.msg_namelen=0;
+ iov.iov_base = buff;
+ iov.iov_len = len;
+ msg.msg_name = NULL;
+ msg.msg_iov = &iov;
+ msg.msg_iovlen = 1;
+ msg.msg_control = NULL;
+ msg.msg_controllen = 0;
+ msg.msg_namelen = 0;
if (addr) {
err = move_addr_to_kernel(addr, addr_len, address);
if (err < 0)
goto out_put;
- msg.msg_name=address;
- msg.msg_namelen=addr_len;
+ msg.msg_name = address;
+ msg.msg_namelen = addr_len;
}
if (sock->file->f_flags & O_NONBLOCK)
flags |= MSG_DONTWAIT;
msg.msg_flags = flags;
err = sock_sendmsg(sock, &msg, len);
-out_put:
+out_put:
fput_light(sock_file, fput_needed);
return err;
}
/*
- * Send a datagram down a socket.
+ * Send a datagram down a socket.
*/
-asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags)
+asmlinkage long sys_send(int fd, void __user *buff, size_t len, unsigned flags)
{
return sys_sendto(fd, buff, len, flags, NULL, 0);
}
/*
- * Receive a frame from the socket and optionally record the address of the
+ * Receive a frame from the socket and optionally record the address of the
* sender. We verify the buffers are writable and if needed move the
* sender address from kernel to user space.
*/
-asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags,
- struct sockaddr __user *addr, int __user *addr_len)
+asmlinkage long sys_recvfrom(int fd, void __user *ubuf, size_t size,
+ unsigned flags, struct sockaddr __user *addr,
+ int __user *addr_len)
{
struct socket *sock;
struct iovec iov;
struct msghdr msg;
char address[MAX_SOCK_ADDR];
- int err,err2;
+ int err, err2;
struct file *sock_file;
int fput_needed;
@@ -1647,23 +1668,22 @@ asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned f
if (!sock)
goto out;
- msg.msg_control=NULL;
- msg.msg_controllen=0;
- msg.msg_iovlen=1;
- msg.msg_iov=&iov;
- iov.iov_len=size;
- iov.iov_base=ubuf;
- msg.msg_name=address;
- msg.msg_namelen=MAX_SOCK_ADDR;
+ msg.msg_control = NULL;
+ msg.msg_controllen = 0;
+ msg.msg_iovlen = 1;
+ msg.msg_iov = &iov;
+ iov.iov_len = size;
+ iov.iov_base = ubuf;
+ msg.msg_name = address;
+ msg.msg_namelen = MAX_SOCK_ADDR;
if (sock->file->f_flags & O_NONBLOCK)
flags |= MSG_DONTWAIT;
- err=sock_recvmsg(sock, &msg, size, flags);
+ err = sock_recvmsg(sock, &msg, size, flags);
- if(err >= 0 && addr != NULL)
- {
- err2=move_addr_to_user(address, msg.msg_namelen, addr, addr_len);
- if(err2<0)
- err=err2;
+ if (err >= 0 && addr != NULL) {
+ err2 = move_addr_to_user(address, msg.msg_namelen, addr, addr_len);
+ if (err2 < 0)
+ err = err2;
}
out:
fput_light(sock_file, fput_needed);
@@ -1671,10 +1691,11 @@ out:
}
/*
- * Receive a datagram from a socket.
+ * Receive a datagram from a socket.
*/
-asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags)
+asmlinkage long sys_recv(int fd, void __user *ubuf, size_t size,
+ unsigned flags)
{
return sys_recvfrom(fd, ubuf, size, flags, NULL, NULL);
}
@@ -1684,24 +1705,29 @@ asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags
* to pass the user mode parameter for the protocols to sort out.
*/
-asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen)
+asmlinkage long sys_setsockopt(int fd, int level, int optname,
+ char __user *optval, int optlen)
{
int err, fput_needed;
struct socket *sock;
if (optlen < 0)
return -EINVAL;
-
- if ((sock = sockfd_lookup_light(fd, &err, &fput_needed)) != NULL)
- {
- err = security_socket_setsockopt(sock,level,optname);
+
+ sock = sockfd_lookup_light(fd, &err, &fput_needed);
+ if (sock != NULL) {
+ err = security_socket_setsockopt(sock, level, optname);
if (err)
goto out_put;
if (level == SOL_SOCKET)
- err=sock_setsockopt(sock,level,optname,optval,optlen);
+ err =
+ sock_setsockopt(sock, level, optname, optval,
+ optlen);
else
- err=sock->ops->setsockopt(sock, level, optname, optval, optlen);
+ err =
+ sock->ops->setsockopt(sock, level, optname, optval,
+ optlen);
out_put:
fput_light(sock->file, fput_needed);
}
@@ -1713,27 +1739,32 @@ out_put:
* to pass a user mode parameter for the protocols to sort out.
*/
-asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen)
+asmlinkage long sys_getsockopt(int fd, int level, int optname,
+ char __user *optval, int __user *optlen)
{
int err, fput_needed;
struct socket *sock;
- if ((sock = sockfd_lookup_light(fd, &err, &fput_needed)) != NULL) {
+ sock = sockfd_lookup_light(fd, &err, &fput_needed);
+ if (sock != NULL) {
err = security_socket_getsockopt(sock, level, optname);
if (err)
goto out_put;
if (level == SOL_SOCKET)
- err=sock_getsockopt(sock,level,optname,optval,optlen);
+ err =
+ sock_getsockopt(sock, level, optname, optval,
+ optlen);
else
- err=sock->ops->getsockopt(sock, level, optname, optval, optlen);
+ err =
+ sock->ops->getsockopt(sock, level, optname, optval,
+ optlen);
out_put:
fput_light(sock->file, fput_needed);
}
return err;
}
-
/*
* Shutdown a socket.
*/
@@ -1743,8 +1774,8 @@ asmlinkage long sys_shutdown(int fd, int how)
int err, fput_needed;
struct socket *sock;
- if ((sock = sockfd_lookup_light(fd, &err, &fput_needed))!=NULL)
- {
+ sock = sockfd_lookup_light(fd, &err, &fput_needed);
+ if (sock != NULL) {
err = security_socket_shutdown(sock, how);
if (!err)
err = sock->ops->shutdown(sock, how);
@@ -1753,41 +1784,42 @@ asmlinkage long sys_shutdown(int fd, int how)
return err;
}
-/* A couple of helpful macros for getting the address of the 32/64 bit
+/* A couple of helpful macros for getting the address of the 32/64 bit
* fields which are the same type (int / unsigned) on our platforms.
*/
#define COMPAT_MSG(msg, member) ((MSG_CMSG_COMPAT & flags) ? &msg##_compat->member : &msg->member)
#define COMPAT_NAMELEN(msg) COMPAT_MSG(msg, msg_namelen)
#define COMPAT_FLAGS(msg) COMPAT_MSG(msg, msg_flags)
-
/*
* BSD sendmsg interface
*/
asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags)
{
- struct compat_msghdr __user *msg_compat = (struct compat_msghdr __user *)msg;
+ struct compat_msghdr __user *msg_compat =
+ (struct compat_msghdr __user *)msg;
struct socket *sock;
char address[MAX_SOCK_ADDR];
struct iovec iovstack[UIO_FASTIOV], *iov = iovstack;
unsigned char ctl[sizeof(struct cmsghdr) + 20]
- __attribute__ ((aligned (sizeof(__kernel_size_t))));
- /* 20 is size of ipv6_pktinfo */
+ __attribute__ ((aligned(sizeof(__kernel_size_t))));
+ /* 20 is size of ipv6_pktinfo */
unsigned char *ctl_buf = ctl;
struct msghdr msg_sys;
int err, ctl_len, iov_size, total_len;
int fput_needed;
-
+
err = -EFAULT;
if (MSG_CMSG_COMPAT & flags) {
if (get_compat_msghdr(&msg_sys, msg_compat))
return -EFAULT;
- } else if (copy_from_user(&msg_sys, msg, sizeof(struct msghdr)))
+ }
+ else if (copy_from_user(&msg_sys, msg, sizeof(struct msghdr)))
return -EFAULT;
sock = sockfd_lookup_light(fd, &err, &fput_needed);
- if (!sock)
+ if (!sock)
goto out;
/* do not move before msg_sys is valid */
@@ -1795,7 +1827,7 @@ asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags)
if (msg_sys.msg_iovlen > UIO_MAXIOV)
goto out_put;
- /* Check whether to allocate the iovec area*/
+ /* Check whether to allocate the iovec area */
err = -ENOMEM;
iov_size = msg_sys.msg_iovlen * sizeof(struct iovec);
if (msg_sys.msg_iovlen > UIO_FASTIOV) {
@@ -1809,7 +1841,7 @@ asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags)
err = verify_compat_iovec(&msg_sys, iov, address, VERIFY_READ);
} else
err = verify_iovec(&msg_sys, iov, address, VERIFY_READ);
- if (err < 0)
+ if (err < 0)
goto out_freeiov;
total_len = err;
@@ -1817,18 +1849,19 @@ asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags)
if (msg_sys.msg_controllen > INT_MAX)
goto out_freeiov;
- ctl_len = msg_sys.msg_controllen;
+ ctl_len = msg_sys.msg_controllen;
if ((MSG_CMSG_COMPAT & flags) && ctl_len) {
- err = cmsghdr_from_user_compat_to_kern(&msg_sys, sock->sk, ctl, sizeof(ctl));
+ err =
+ cmsghdr_from_user_compat_to_kern(&msg_sys, sock->sk, ctl,
+ sizeof(ctl));
if (err)
goto out_freeiov;
ctl_buf = msg_sys.msg_control;
ctl_len = msg_sys.msg_controllen;
} else if (ctl_len) {
- if (ctl_len > sizeof(ctl))
- {
+ if (ctl_len > sizeof(ctl)) {
ctl_buf = sock_kmalloc(sock->sk, ctl_len, GFP_KERNEL);
- if (ctl_buf == NULL)
+ if (ctl_buf == NULL)
goto out_freeiov;
}
err = -EFAULT;
@@ -1837,7 +1870,8 @@ asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags)
* Afterwards, it will be a kernel pointer. Thus the compiler-assisted
* checking falls down on this.
*/
- if (copy_from_user(ctl_buf, (void __user *) msg_sys.msg_control, ctl_len))
+ if (copy_from_user(ctl_buf, (void __user *)msg_sys.msg_control,
+ ctl_len))
goto out_freectl;
msg_sys.msg_control = ctl_buf;
}
@@ -1848,14 +1882,14 @@ asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags)
err = sock_sendmsg(sock, &msg_sys, total_len);
out_freectl:
- if (ctl_buf != ctl)
+ if (ctl_buf != ctl)
sock_kfree_s(sock->sk, ctl_buf, ctl_len);
out_freeiov:
if (iov != iovstack)
sock_kfree_s(sock->sk, iov, iov_size);
out_put:
fput_light(sock->file, fput_needed);
-out:
+out:
return err;
}
@@ -1863,12 +1897,14 @@ out:
* BSD recvmsg interface
*/
-asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags)
+asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg,
+ unsigned int flags)
{
- struct compat_msghdr __user *msg_compat = (struct compat_msghdr __user *)msg;
+ struct compat_msghdr __user *msg_compat =
+ (struct compat_msghdr __user *)msg;
struct socket *sock;
struct iovec iovstack[UIO_FASTIOV];
- struct iovec *iov=iovstack;
+ struct iovec *iov = iovstack;
struct msghdr msg_sys;
unsigned long cmsg_ptr;
int err, iov_size, total_len, len;
@@ -1880,13 +1916,13 @@ asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flag
/* user mode address pointers */
struct sockaddr __user *uaddr;
int __user *uaddr_len;
-
+
if (MSG_CMSG_COMPAT & flags) {
if (get_compat_msghdr(&msg_sys, msg_compat))
return -EFAULT;
- } else
- if (copy_from_user(&msg_sys,msg,sizeof(struct msghdr)))
- return -EFAULT;
+ }
+ else if (copy_from_user(&msg_sys, msg, sizeof(struct msghdr)))
+ return -EFAULT;
sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (!sock)
@@ -1895,8 +1931,8 @@ asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flag
err = -EMSGSIZE;
if (msg_sys.msg_iovlen > UIO_MAXIOV)
goto out_put;
-
- /* Check whether to allocate the iovec area*/
+
+ /* Check whether to allocate the iovec area */
err = -ENOMEM;
iov_size = msg_sys.msg_iovlen * sizeof(struct iovec);
if (msg_sys.msg_iovlen > UIO_FASTIOV) {
@@ -1906,11 +1942,11 @@ asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flag
}
/*
- * Save the user-mode address (verify_iovec will change the
- * kernel msghdr to use the kernel address space)
+ * Save the user-mode address (verify_iovec will change the
+ * kernel msghdr to use the kernel address space)
*/
-
- uaddr = (void __user *) msg_sys.msg_name;
+
+ uaddr = (void __user *)msg_sys.msg_name;
uaddr_len = COMPAT_NAMELEN(msg);
if (MSG_CMSG_COMPAT & flags) {
err = verify_compat_iovec(&msg_sys, iov, addr, VERIFY_WRITE);
@@ -1918,13 +1954,13 @@ asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flag
err = verify_iovec(&msg_sys, iov, addr, VERIFY_WRITE);
if (err < 0)
goto out_freeiov;
- total_len=err;
+ total_len = err;
cmsg_ptr = (unsigned long)msg_sys.msg_control;
msg_sys.msg_flags = 0;
if (MSG_CMSG_COMPAT & flags)
msg_sys.msg_flags = MSG_CMSG_COMPAT;
-
+
if (sock->file->f_flags & O_NONBLOCK)
flags |= MSG_DONTWAIT;
err = sock_recvmsg(sock, &msg_sys, total_len, flags);
@@ -1933,7 +1969,8 @@ asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flag
len = err;
if (uaddr != NULL) {
- err = move_addr_to_user(addr, msg_sys.msg_namelen, uaddr, uaddr_len);
+ err = move_addr_to_user(addr, msg_sys.msg_namelen, uaddr,
+ uaddr_len);
if (err < 0)
goto out_freeiov;
}
@@ -1942,10 +1979,10 @@ asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flag
if (err)
goto out_freeiov;
if (MSG_CMSG_COMPAT & flags)
- err = __put_user((unsigned long)msg_sys.msg_control-cmsg_ptr,
+ err = __put_user((unsigned long)msg_sys.msg_control - cmsg_ptr,
&msg_compat->msg_controllen);
else
- err = __put_user((unsigned long)msg_sys.msg_control-cmsg_ptr,
+ err = __put_user((unsigned long)msg_sys.msg_control - cmsg_ptr,
&msg->msg_controllen);
if (err)
goto out_freeiov;
@@ -1964,102 +2001,113 @@ out:
/* Argument list sizes for sys_socketcall */
#define AL(x) ((x) * sizeof(unsigned long))
-static unsigned char nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
- AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
- AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
+static const unsigned char nargs[18]={
+ AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
+ AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
+ AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)
+};
+
#undef AL
/*
- * System call vectors.
+ * System call vectors.
*
* Argument checking cleaned up. Saved 20% in size.
* This function doesn't need to set the kernel lock because
- * it is set by the callees.
+ * it is set by the callees.
*/
asmlinkage long sys_socketcall(int call, unsigned long __user *args)
{
unsigned long a[6];
- unsigned long a0,a1;
+ unsigned long a0, a1;
int err;
- if(call<1||call>SYS_RECVMSG)
+ if (call < 1 || call > SYS_RECVMSG)
return -EINVAL;
/* copy_from_user should be SMP safe. */
if (copy_from_user(a, args, nargs[call]))
return -EFAULT;
- err = audit_socketcall(nargs[call]/sizeof(unsigned long), a);
+ err = audit_socketcall(nargs[call] / sizeof(unsigned long), a);
if (err)
return err;
- a0=a[0];
- a1=a[1];
-
- switch(call)
- {
- case SYS_SOCKET:
- err = sys_socket(a0,a1,a[2]);
- break;
- case SYS_BIND:
- err = sys_bind(a0,(struct sockaddr __user *)a1, a[2]);
- break;
- case SYS_CONNECT:
- err = sys_connect(a0, (struct sockaddr __user *)a1, a[2]);
- break;
- case SYS_LISTEN:
- err = sys_listen(a0,a1);
- break;
- case SYS_ACCEPT:
- err = sys_accept(a0,(struct sockaddr __user *)a1, (int __user *)a[2]);
- break;
- case SYS_GETSOCKNAME:
- err = sys_getsockname(a0,(struct sockaddr __user *)a1, (int __user *)a[2]);
- break;
- case SYS_GETPEERNAME:
- err = sys_getpeername(a0, (struct sockaddr __user *)a1, (int __user *)a[2]);
- break;
- case SYS_SOCKETPAIR:
- err = sys_socketpair(a0,a1, a[2], (int __user *)a[3]);
- break;
- case SYS_SEND:
- err = sys_send(a0, (void __user *)a1, a[2], a[3]);
- break;
- case SYS_SENDTO:
- err = sys_sendto(a0,(void __user *)a1, a[2], a[3],
- (struct sockaddr __user *)a[4], a[5]);
- break;
- case SYS_RECV:
- err = sys_recv(a0, (void __user *)a1, a[2], a[3]);
- break;
- case SYS_RECVFROM:
- err = sys_recvfrom(a0, (void __user *)a1, a[2], a[3],
- (struct sockaddr __user *)a[4], (int __user *)a[5]);
- break;
- case SYS_SHUTDOWN:
- err = sys_shutdown(a0,a1);
- break;
- case SYS_SETSOCKOPT:
- err = sys_setsockopt(a0, a1, a[2], (char __user *)a[3], a[4]);
- break;
- case SYS_GETSOCKOPT:
- err = sys_getsockopt(a0, a1, a[2], (char __user *)a[3], (int __user *)a[4]);
- break;
- case SYS_SENDMSG:
- err = sys_sendmsg(a0, (struct msghdr __user *) a1, a[2]);
- break;
- case SYS_RECVMSG:
- err = sys_recvmsg(a0, (struct msghdr __user *) a1, a[2]);
- break;
- default:
- err = -EINVAL;
- break;
+ a0 = a[0];
+ a1 = a[1];
+
+ switch (call) {
+ case SYS_SOCKET:
+ err = sys_socket(a0, a1, a[2]);
+ break;
+ case SYS_BIND:
+ err = sys_bind(a0, (struct sockaddr __user *)a1, a[2]);
+ break;
+ case SYS_CONNECT:
+ err = sys_connect(a0, (struct sockaddr __user *)a1, a[2]);
+ break;
+ case SYS_LISTEN:
+ err = sys_listen(a0, a1);
+ break;
+ case SYS_ACCEPT:
+ err =
+ sys_accept(a0, (struct sockaddr __user *)a1,
+ (int __user *)a[2]);
+ break;
+ case SYS_GETSOCKNAME:
+ err =
+ sys_getsockname(a0, (struct sockaddr __user *)a1,
+ (int __user *)a[2]);
+ break;
+ case SYS_GETPEERNAME:
+ err =
+ sys_getpeername(a0, (struct sockaddr __user *)a1,
+ (int __user *)a[2]);
+ break;
+ case SYS_SOCKETPAIR:
+ err = sys_socketpair(a0, a1, a[2], (int __user *)a[3]);
+ break;
+ case SYS_SEND:
+ err = sys_send(a0, (void __user *)a1, a[2], a[3]);
+ break;
+ case SYS_SENDTO:
+ err = sys_sendto(a0, (void __user *)a1, a[2], a[3],
+ (struct sockaddr __user *)a[4], a[5]);
+ break;
+ case SYS_RECV:
+ err = sys_recv(a0, (void __user *)a1, a[2], a[3]);
+ break;
+ case SYS_RECVFROM:
+ err = sys_recvfrom(a0, (void __user *)a1, a[2], a[3],
+ (struct sockaddr __user *)a[4],
+ (int __user *)a[5]);
+ break;
+ case SYS_SHUTDOWN:
+ err = sys_shutdown(a0, a1);
+ break;
+ case SYS_SETSOCKOPT:
+ err = sys_setsockopt(a0, a1, a[2], (char __user *)a[3], a[4]);
+ break;
+ case SYS_GETSOCKOPT:
+ err =
+ sys_getsockopt(a0, a1, a[2], (char __user *)a[3],
+ (int __user *)a[4]);
+ break;
+ case SYS_SENDMSG:
+ err = sys_sendmsg(a0, (struct msghdr __user *)a1, a[2]);
+ break;
+ case SYS_RECVMSG:
+ err = sys_recvmsg(a0, (struct msghdr __user *)a1, a[2]);
+ break;
+ default:
+ err = -EINVAL;
+ break;
}
return err;
}
-#endif /* __ARCH_WANT_SYS_SOCKETCALL */
+#endif /* __ARCH_WANT_SYS_SOCKETCALL */
/*
* This function is called by a protocol handler that wants to
@@ -2072,18 +2120,18 @@ int sock_register(struct net_proto_family *ops)
int err;
if (ops->family >= NPROTO) {
- printk(KERN_CRIT "protocol %d >= NPROTO(%d)\n", ops->family, NPROTO);
+ printk(KERN_CRIT "protocol %d >= NPROTO(%d)\n", ops->family,
+ NPROTO);
return -ENOBUFS;
}
net_family_write_lock();
err = -EEXIST;
if (net_families[ops->family] == NULL) {
- net_families[ops->family]=ops;
+ net_families[ops->family] = ops;
err = 0;
}
net_family_write_unlock();
- printk(KERN_INFO "NET: Registered protocol family %d\n",
- ops->family);
+ printk(KERN_INFO "NET: Registered protocol family %d\n", ops->family);
return err;
}
@@ -2099,28 +2147,27 @@ int sock_unregister(int family)
return -1;
net_family_write_lock();
- net_families[family]=NULL;
+ net_families[family] = NULL;
net_family_write_unlock();
- printk(KERN_INFO "NET: Unregistered protocol family %d\n",
- family);
+ printk(KERN_INFO "NET: Unregistered protocol family %d\n", family);
return 0;
}
static int __init sock_init(void)
{
/*
- * Initialize sock SLAB cache.
+ * Initialize sock SLAB cache.
*/
-
+
sk_init();
/*
- * Initialize skbuff SLAB cache
+ * Initialize skbuff SLAB cache
*/
skb_init();
/*
- * Initialize the protocols module.
+ * Initialize the protocols module.
*/
init_inodecache();
@@ -2146,7 +2193,7 @@ void socket_seq_show(struct seq_file *seq)
int counter = 0;
for_each_possible_cpu(cpu)
- counter += per_cpu(sockets_in_use, cpu);
+ counter += per_cpu(sockets_in_use, cpu);
/* It can be negative, by the way. 8) */
if (counter < 0)
@@ -2154,11 +2201,11 @@ void socket_seq_show(struct seq_file *seq)
seq_printf(seq, "sockets: used %d\n", counter);
}
-#endif /* CONFIG_PROC_FS */
+#endif /* CONFIG_PROC_FS */
#ifdef CONFIG_COMPAT
static long compat_sock_ioctl(struct file *file, unsigned cmd,
- unsigned long arg)
+ unsigned long arg)
{
struct socket *sock = file->private_data;
int ret = -ENOIOCTLCMD;
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-27 19:55:31 +0000