#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <net/tux.h>
+#include <linux/mutex.h>
#include <linux/wanrouter.h>
#include <linux/if_bridge.h>
+#include <linux/if_frad.h>
+#include <linux/if_vlan.h>
#include <linux/init.h>
#include <linux/poll.h>
#include <linux/cache.h>
#include <linux/compat.h>
#include <linux/kmod.h>
#include <linux/audit.h>
-
-#ifdef CONFIG_NET_RADIO
-#include <linux/wireless.h> /* Note : will define WIRELESS_EXT */
-#endif /* CONFIG_NET_RADIO */
+#include <linux/wireless.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
struct poll_table_struct *wait);
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);
+#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_sendpage(struct file *file, struct page *page,
int offset, size_t size, loff_t *ppos, int more);
-
/*
* Socket files have a set of 'special' operations as well as the generic file ones. These don't appear
* in the operation structures but are done directly via the socketcall() multiplexor.
.aio_write = sock_aio_write,
.poll = sock_poll,
.unlocked_ioctl = sock_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = compat_sock_ioctl,
+#endif
.mmap = sock_mmap,
.open = sock_no_open, /* special open code to disallow open via /proc */
.release = sock_close,
.fasync = sock_fasync,
.readv = sock_readv,
.writev = sock_writev,
- .sendpage = sock_sendpage
+ .sendpage = sock_sendpage,
+ .splice_write = generic_splice_sendpage,
};
/*
return -EINVAL;
if(len)
{
+ if (audit_sockaddr(klen, kaddr))
+ return -ENOMEM;
if(copy_to_user(uaddr,kaddr,len))
return -EFAULT;
}
#define SOCKFS_MAGIC 0x534F434B
-static kmem_cache_t * sock_inode_cachep;
+static kmem_cache_t * sock_inode_cachep __read_mostly;
static struct inode *sock_alloc_inode(struct super_block *sb)
{
{
sock_inode_cachep = kmem_cache_create("sock_inode_cache",
sizeof(struct socket_alloc),
- 0, SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT,
+ 0, (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
+ SLAB_MEM_SPREAD),
init_once, NULL);
if (sock_inode_cachep == NULL)
return -ENOMEM;
return get_sb_pseudo(fs_type, "socket:", &sockfs_ops, SOCKFS_MAGIC);
}
-static struct vfsmount *sock_mnt;
+static struct vfsmount *sock_mnt __read_mostly;
static struct file_system_type sock_fs_type = {
.name = "sockfs",
/*
* Obtains the first available file descriptor and sets it up for use.
*
- * This function creates file structure and maps it to fd space
- * of current process. On success it returns file descriptor
+ * These functions create file structures and maps them to fd space
+ * of the current process. On success it returns file descriptor
* and file struct implicitly stored in sock->file.
* Note that another thread may close file descriptor before we return
* from this function. We use the fact that now we do not refer
* but we take care of internal coherence yet.
*/
-struct file * sock_map_file(struct socket *sock)
+static int sock_alloc_fd(struct file **filep)
{
- struct file *file;
- struct qstr this;
- char name[32];
+ int fd;
- file = get_empty_filp();
+ fd = get_unused_fd();
+ if (likely(fd >= 0)) {
+ struct file *file = get_empty_filp();
- if (!file)
- return ERR_PTR(-ENFILE);
+ *filep = file;
+ if (unlikely(!file)) {
+ put_unused_fd(fd);
+ return -ENFILE;
+ }
+ } else
+ *filep = NULL;
+ return fd;
+}
- sprintf(name, "[%lu]", SOCK_INODE(sock)->i_ino);
+static int sock_attach_fd(struct socket *sock, struct file *file)
+{
+ struct qstr this;
+ char name[32];
+
+ this.len = sprintf(name, "[%lu]", SOCK_INODE(sock)->i_ino);
this.name = name;
- this.len = strlen(name);
this.hash = SOCK_INODE(sock)->i_ino;
file->f_dentry = d_alloc(sock_mnt->mnt_sb->s_root, &this);
- if (!file->f_dentry) {
- put_filp(file);
- return ERR_PTR(-ENOMEM);
- }
+ if (unlikely(!file->f_dentry))
+ return -ENOMEM;
+
file->f_dentry->d_op = &sockfs_dentry_operations;
d_add(file->f_dentry, SOCK_INODE(sock));
file->f_vfsmnt = mntget(sock_mnt);
-file->f_mapping = file->f_dentry->d_inode->i_mapping;
+ file->f_mapping = file->f_dentry->d_inode->i_mapping;
- if (sock->file)
- BUG();
sock->file = file;
file->f_op = SOCK_INODE(sock)->i_fop = &socket_file_ops;
file->f_mode = FMODE_READ | FMODE_WRITE;
file->f_flags = O_RDWR;
file->f_pos = 0;
+ file->private_data = sock;
- return file;
+ return 0;
}
int sock_map_fd(struct socket *sock)
{
- int fd;
- struct file *file;
-
- /*
- * Find a file descriptor suitable for return to the user.
- */
-
- fd = get_unused_fd();
- if (fd < 0)
- return fd;
-
- file = sock_map_file(sock);
- if (IS_ERR(file)) {
- put_unused_fd(fd);
- return PTR_ERR(file);
+ struct file *newfile;
+ int fd = sock_alloc_fd(&newfile);
+
+ if (likely(fd >= 0)) {
+ int err = sock_attach_fd(sock, newfile);
+
+ if (unlikely(err < 0)) {
+ put_filp(newfile);
+ put_unused_fd(fd);
+ return err;
+ }
+ fd_install(fd, newfile);
}
- fd_install(fd, file);
-
return fd;
}
+static struct socket *sock_from_file(struct file *file, int *err)
+{
+ struct inode *inode;
+ struct socket *sock;
+
+ if (file->f_op == &socket_file_ops)
+ return file->private_data; /* set in sock_map_fd */
+
+ inode = file->f_dentry->d_inode;
+ if (!S_ISSOCK(inode->i_mode)) {
+ *err = -ENOTSOCK;
+ return NULL;
+ }
+
+ sock = SOCKET_I(inode);
+ if (sock->file != file) {
+ printk(KERN_ERR "socki_lookup: socket file changed!\n");
+ sock->file = file;
+ }
+ return sock;
+}
+
/**
* sockfd_lookup - Go from a file number to its socket slot
* @fd: file handle
struct socket *sockfd_lookup(int fd, int *err)
{
struct file *file;
- struct inode *inode;
struct socket *sock;
- if (!(file = fget(fd)))
- {
+ if (!(file = fget(fd))) {
*err = -EBADF;
return NULL;
}
-
- inode = file->f_dentry->d_inode;
- if (!S_ISSOCK(inode->i_mode)) {
- *err = -ENOTSOCK;
+ sock = sock_from_file(file, err);
+ if (!sock)
fput(file);
- return NULL;
- }
+ return sock;
+}
- sock = SOCKET_I(inode);
- if (sock->file != file) {
- printk(KERN_ERR "socki_lookup: socket file changed!\n");
- sock->file = file;
+static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed)
+{
+ struct file *file;
+ struct socket *sock;
+
+ *err = -EBADF;
+ file = fget_light(fd, fput_needed);
+ if (file) {
+ sock = sock_from_file(file, err);
+ if (sock)
+ return sock;
+ fput_light(file, *fput_needed);
}
- return sock;
+ return NULL;
}
/**
return -ENXIO;
}
-struct file_operations bad_sock_fops = {
+const struct file_operations bad_sock_fops = {
.owner = THIS_MODULE,
.open = sock_no_open,
};
kfree(iocb->private);
}
-/*
- * Read data from a socket. ubuf is a user mode pointer. We make sure the user
- * area ubuf...ubuf+size-1 is writable before asking the protocol.
- */
-
-static ssize_t sock_aio_read(struct kiocb *iocb, char __user *ubuf,
- size_t size, loff_t pos)
+static ssize_t sock_sendpage(struct file *file, struct page *page,
+ int offset, size_t size, loff_t *ppos, int more)
{
- struct sock_iocb *x, siocb;
struct socket *sock;
int flags;
- if (pos != 0)
- return -ESPIPE;
- if (size==0) /* Match SYS5 behaviour */
- return 0;
+ sock = file->private_data;
- if (is_sync_kiocb(iocb))
- x = &siocb;
- else {
- x = kmalloc(sizeof(struct sock_iocb), GFP_KERNEL);
- if (!x)
- return -ENOMEM;
+ flags = !(file->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT;
+ if (more)
+ flags |= MSG_MORE;
+
+ return sock->ops->sendpage(sock, page, offset, size, flags);
+}
+
+static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb,
+ char __user *ubuf, size_t size, struct sock_iocb *siocb)
+{
+ if (!is_sync_kiocb(iocb)) {
+ siocb = kmalloc(sizeof(*siocb), GFP_KERNEL);
+ if (!siocb)
+ return NULL;
iocb->ki_dtor = sock_aio_dtor;
}
- iocb->private = x;
- x->kiocb = iocb;
- sock = SOCKET_I(iocb->ki_filp->f_dentry->d_inode);
- x->async_msg.msg_name = NULL;
- x->async_msg.msg_namelen = 0;
- x->async_msg.msg_iov = &x->async_iov;
- x->async_msg.msg_iovlen = 1;
- x->async_msg.msg_control = NULL;
- x->async_msg.msg_controllen = 0;
- x->async_iov.iov_base = ubuf;
- x->async_iov.iov_len = size;
- flags = !(iocb->ki_filp->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT;
+ siocb->kiocb = iocb;
+ siocb->async_iov.iov_base = ubuf;
+ siocb->async_iov.iov_len = size;
- return __sock_recvmsg(iocb, sock, &x->async_msg, size, flags);
+ iocb->private = siocb;
+ return siocb;
}
+static ssize_t do_sock_read(struct msghdr *msg, struct kiocb *iocb,
+ struct file *file, struct iovec *iov, unsigned long nr_segs)
+{
+ struct socket *sock = file->private_data;
+ size_t size = 0;
+ int i;
-/*
- * Write data to a socket. We verify that the user area ubuf..ubuf+size-1
- * is readable by the user process.
- */
+ for (i = 0 ; i < nr_segs ; i++)
+ size += iov[i].iov_len;
-static ssize_t sock_aio_write(struct kiocb *iocb, const char __user *ubuf,
- size_t size, loff_t pos)
+ msg->msg_name = NULL;
+ msg->msg_namelen = 0;
+ msg->msg_control = NULL;
+ msg->msg_controllen = 0;
+ msg->msg_iov = (struct iovec *) iov;
+ msg->msg_iovlen = nr_segs;
+ msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
+
+ return __sock_recvmsg(iocb, sock, msg, size, msg->msg_flags);
+}
+
+static ssize_t sock_readv(struct file *file, const struct iovec *iov,
+ unsigned long nr_segs, loff_t *ppos)
{
- struct sock_iocb *x, siocb;
- struct socket *sock;
-
+ struct kiocb iocb;
+ struct sock_iocb siocb;
+ struct msghdr msg;
+ int ret;
+
+ init_sync_kiocb(&iocb, NULL);
+ iocb.private = &siocb;
+
+ ret = do_sock_read(&msg, &iocb, file, (struct iovec *)iov, nr_segs);
+ if (-EIOCBQUEUED == ret)
+ ret = wait_on_sync_kiocb(&iocb);
+ return ret;
+}
+
+static ssize_t sock_aio_read(struct kiocb *iocb, char __user *ubuf,
+ size_t count, loff_t pos)
+{
+ struct sock_iocb siocb, *x;
+
if (pos != 0)
return -ESPIPE;
- if(size==0) /* Match SYS5 behaviour */
+ if (count == 0) /* Match SYS5 behaviour */
return 0;
- if (is_sync_kiocb(iocb))
- x = &siocb;
- else {
- x = kmalloc(sizeof(struct sock_iocb), GFP_KERNEL);
- if (!x)
- return -ENOMEM;
- iocb->ki_dtor = sock_aio_dtor;
- }
- iocb->private = x;
- x->kiocb = iocb;
- sock = SOCKET_I(iocb->ki_filp->f_dentry->d_inode);
-
- x->async_msg.msg_name = NULL;
- x->async_msg.msg_namelen = 0;
- x->async_msg.msg_iov = &x->async_iov;
- x->async_msg.msg_iovlen = 1;
- x->async_msg.msg_control = NULL;
- x->async_msg.msg_controllen = 0;
- x->async_msg.msg_flags = !(iocb->ki_filp->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT;
- if (sock->type == SOCK_SEQPACKET)
- x->async_msg.msg_flags |= MSG_EOR;
- x->async_iov.iov_base = (void __user *)ubuf;
- x->async_iov.iov_len = size;
-
- return __sock_sendmsg(iocb, sock, &x->async_msg, size);
+ x = alloc_sock_iocb(iocb, ubuf, count, &siocb);
+ if (!x)
+ return -ENOMEM;
+ return do_sock_read(&x->async_msg, iocb, iocb->ki_filp,
+ &x->async_iov, 1);
}
-ssize_t sock_sendpage(struct file *file, struct page *page,
- int offset, size_t size, loff_t *ppos, int more)
+static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb,
+ struct file *file, struct iovec *iov, unsigned long nr_segs)
{
- struct socket *sock;
- int flags;
+ struct socket *sock = file->private_data;
+ size_t size = 0;
+ int i;
- sock = SOCKET_I(file->f_dentry->d_inode);
+ for (i = 0 ; i < nr_segs ; i++)
+ size += iov[i].iov_len;
- flags = !(file->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT;
- if (more)
- flags |= MSG_MORE;
+ msg->msg_name = NULL;
+ msg->msg_namelen = 0;
+ msg->msg_control = NULL;
+ msg->msg_controllen = 0;
+ 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)
+ msg->msg_flags |= MSG_EOR;
- return sock->ops->sendpage(sock, page, offset, size, flags);
+ return __sock_sendmsg(iocb, sock, msg, size);
}
-static int sock_readv_writev(int type, struct inode * inode,
- struct file * file, const struct iovec * iov,
- long count, size_t size)
+static ssize_t sock_writev(struct file *file, const struct iovec *iov,
+ unsigned long nr_segs, loff_t *ppos)
{
struct msghdr msg;
- struct socket *sock;
+ struct kiocb iocb;
+ struct sock_iocb siocb;
+ int ret;
- sock = SOCKET_I(inode);
+ init_sync_kiocb(&iocb, NULL);
+ iocb.private = &siocb;
- msg.msg_name = NULL;
- msg.msg_namelen = 0;
- msg.msg_control = NULL;
- msg.msg_controllen = 0;
- msg.msg_iov = (struct iovec *) iov;
- msg.msg_iovlen = count;
- msg.msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0;
+ ret = do_sock_write(&msg, &iocb, file, (struct iovec *)iov, nr_segs);
+ if (-EIOCBQUEUED == ret)
+ ret = wait_on_sync_kiocb(&iocb);
+ return ret;
+}
- /* read() does a VERIFY_WRITE */
- if (type == VERIFY_WRITE)
- return sock_recvmsg(sock, &msg, size, msg.msg_flags);
+static ssize_t sock_aio_write(struct kiocb *iocb, const char __user *ubuf,
+ size_t count, loff_t pos)
+{
+ struct sock_iocb siocb, *x;
- if (sock->type == SOCK_SEQPACKET)
- msg.msg_flags |= MSG_EOR;
+ if (pos != 0)
+ return -ESPIPE;
+ if (count == 0) /* Match SYS5 behaviour */
+ return 0;
- return sock_sendmsg(sock, &msg, size);
-}
+ x = alloc_sock_iocb(iocb, (void __user *)ubuf, count, &siocb);
+ if (!x)
+ return -ENOMEM;
-static ssize_t sock_readv(struct file *file, const struct iovec *vector,
- unsigned long count, loff_t *ppos)
-{
- size_t tot_len = 0;
- int i;
- for (i = 0 ; i < count ; i++)
- tot_len += vector[i].iov_len;
- return sock_readv_writev(VERIFY_WRITE, file->f_dentry->d_inode,
- file, vector, count, tot_len);
-}
-
-static ssize_t sock_writev(struct file *file, const struct iovec *vector,
- unsigned long count, loff_t *ppos)
-{
- size_t tot_len = 0;
- int i;
- for (i = 0 ; i < count ; i++)
- tot_len += vector[i].iov_len;
- return sock_readv_writev(VERIFY_READ, file->f_dentry->d_inode,
- file, vector, count, tot_len);
+ return do_sock_write(&x->async_msg, iocb, iocb->ki_filp,
+ &x->async_iov, 1);
}
* with module unload.
*/
-static DECLARE_MUTEX(br_ioctl_mutex);
+static DEFINE_MUTEX(br_ioctl_mutex);
static int (*br_ioctl_hook)(unsigned int cmd, void __user *arg) = NULL;
void brioctl_set(int (*hook)(unsigned int, void __user *))
{
- down(&br_ioctl_mutex);
+ mutex_lock(&br_ioctl_mutex);
br_ioctl_hook = hook;
- up(&br_ioctl_mutex);
+ mutex_unlock(&br_ioctl_mutex);
}
EXPORT_SYMBOL(brioctl_set);
-static DECLARE_MUTEX(vlan_ioctl_mutex);
+static DEFINE_MUTEX(vlan_ioctl_mutex);
static int (*vlan_ioctl_hook)(void __user *arg);
void vlan_ioctl_set(int (*hook)(void __user *))
{
- down(&vlan_ioctl_mutex);
+ mutex_lock(&vlan_ioctl_mutex);
vlan_ioctl_hook = hook;
- up(&vlan_ioctl_mutex);
+ mutex_unlock(&vlan_ioctl_mutex);
}
EXPORT_SYMBOL(vlan_ioctl_set);
-static DECLARE_MUTEX(dlci_ioctl_mutex);
+static DEFINE_MUTEX(dlci_ioctl_mutex);
static int (*dlci_ioctl_hook)(unsigned int, void __user *);
void dlci_ioctl_set(int (*hook)(unsigned int, void __user *))
{
- down(&dlci_ioctl_mutex);
+ mutex_lock(&dlci_ioctl_mutex);
dlci_ioctl_hook = hook;
- up(&dlci_ioctl_mutex);
+ mutex_unlock(&dlci_ioctl_mutex);
}
EXPORT_SYMBOL(dlci_ioctl_set);
void __user *argp = (void __user *)arg;
int pid, err;
- sock = SOCKET_I(file->f_dentry->d_inode);
+ sock = file->private_data;
if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) {
err = dev_ioctl(cmd, argp);
} else
-#ifdef WIRELESS_EXT
+#ifdef CONFIG_WIRELESS_EXT
if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) {
err = dev_ioctl(cmd, argp);
} else
-#endif /* WIRELESS_EXT */
+#endif /* CONFIG_WIRELESS_EXT */
switch (cmd) {
case FIOSETOWN:
case SIOCSPGRP:
if (!br_ioctl_hook)
request_module("bridge");
- down(&br_ioctl_mutex);
+ mutex_lock(&br_ioctl_mutex);
if (br_ioctl_hook)
err = br_ioctl_hook(cmd, argp);
- up(&br_ioctl_mutex);
+ mutex_unlock(&br_ioctl_mutex);
break;
case SIOCGIFVLAN:
case SIOCSIFVLAN:
if (!vlan_ioctl_hook)
request_module("8021q");
- down(&vlan_ioctl_mutex);
+ mutex_lock(&vlan_ioctl_mutex);
if (vlan_ioctl_hook)
err = vlan_ioctl_hook(argp);
- up(&vlan_ioctl_mutex);
+ mutex_unlock(&vlan_ioctl_mutex);
break;
case SIOCGIFDIVERT:
case SIOCSIFDIVERT:
request_module("dlci");
if (dlci_ioctl_hook) {
- down(&dlci_ioctl_mutex);
+ mutex_lock(&dlci_ioctl_mutex);
err = dlci_ioctl_hook(cmd, argp);
- up(&dlci_ioctl_mutex);
+ mutex_unlock(&dlci_ioctl_mutex);
}
break;
default:
err = sock->ops->ioctl(sock, cmd, arg);
+
+ /*
+ * If this ioctl is unknown try to hand it down
+ * to the NIC driver.
+ */
+ if (err == -ENOIOCTLCMD)
+ err = dev_ioctl(cmd, argp);
break;
}
return err;
/*
* We can't return errors to poll, so it's either yes or no.
*/
- sock = SOCKET_I(file->f_dentry->d_inode);
+ sock = file->private_data;
return sock->ops->poll(file, sock, wait);
}
static int sock_mmap(struct file * file, struct vm_area_struct * vma)
{
- struct socket *sock = SOCKET_I(file->f_dentry->d_inode);
+ struct socket *sock = file->private_data;
return sock->ops->mmap(file, sock, vma);
}
-int sock_close(struct inode *inode, struct file *filp)
+static int sock_close(struct inode *inode, struct file *filp)
{
/*
* It was possible the inode is NULL we were
if (on)
{
- fna=(struct fasync_struct *)kmalloc(sizeof(struct fasync_struct), GFP_KERNEL);
+ fna = kmalloc(sizeof(struct fasync_struct), GFP_KERNEL);
if(fna==NULL)
return -ENOMEM;
}
- sock = SOCKET_I(filp->f_dentry->d_inode);
+ sock = filp->private_data;
if ((sk=sock->sk) == NULL) {
kfree(fna);
if (!try_module_get(net_families[family]->owner))
goto out_release;
- if ((err = net_families[family]->create(sock, protocol)) < 0)
+ if ((err = net_families[family]->create(sock, protocol)) < 0) {
+ sock->ops = NULL;
goto out_module_put;
+ }
+
/*
* Now to bump the refcnt of the [loadable] module that owns this
* socket at sock_release time we decrement its refcnt.
{
struct socket *sock;
char address[MAX_SOCK_ADDR];
- int err;
+ int err, fput_needed;
- if((sock = sockfd_lookup(fd,&err))!=NULL)
+ 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);
- if (err) {
- sockfd_put(sock);
- return err;
- }
- err = sock->ops->bind(sock, (struct sockaddr *)address, addrlen);
+ if (!err)
+ err = sock->ops->bind(sock,
+ (struct sockaddr *)address, addrlen);
}
- sockfd_put(sock);
+ fput_light(sock->file, fput_needed);
}
return err;
}
asmlinkage long sys_listen(int fd, int backlog)
{
struct socket *sock;
- int err;
+ int err, fput_needed;
- if ((sock = sockfd_lookup(fd, &err)) != NULL) {
+ if ((sock = sockfd_lookup_light(fd, &err, &fput_needed)) != NULL) {
if ((unsigned) backlog > sysctl_somaxconn)
backlog = sysctl_somaxconn;
err = security_socket_listen(sock, backlog);
- if (err) {
- sockfd_put(sock);
- return err;
- }
+ if (!err)
+ err = sock->ops->listen(sock, backlog);
- err=sock->ops->listen(sock, backlog);
- sockfd_put(sock);
+ fput_light(sock->file, fput_needed);
}
return err;
}
asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen)
{
struct socket *sock, *newsock;
- int err, len;
+ struct file *newfile;
+ int err, len, newfd, fput_needed;
char address[MAX_SOCK_ADDR];
- sock = sockfd_lookup(fd, &err);
+ sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (!sock)
goto out;
newsock->type = sock->type;
newsock->ops = sock->ops;
- err = security_socket_accept(sock, newsock);
- if (err)
- goto out_release;
-
/*
* We don't need try_module_get here, as the listening socket (sock)
* has the protocol module (sock->ops->owner) held.
*/
__module_get(newsock->ops->owner);
+ newfd = sock_alloc_fd(&newfile);
+ if (unlikely(newfd < 0)) {
+ err = newfd;
+ sock_release(newsock);
+ goto out_put;
+ }
+
+ err = sock_attach_fd(newsock, newfile);
+ if (err < 0)
+ goto out_fd;
+
+ err = security_socket_accept(sock, newsock);
+ if (err)
+ goto out_fd;
+
err = sock->ops->accept(sock, newsock, sock->file->f_flags);
if (err < 0)
- goto out_release;
+ goto out_fd;
if (upeer_sockaddr) {
if(newsock->ops->getname(newsock, (struct sockaddr *)address, &len, 2)<0) {
err = -ECONNABORTED;
- goto out_release;
+ goto out_fd;
}
err = move_addr_to_user(address, len, upeer_sockaddr, upeer_addrlen);
if (err < 0)
- goto out_release;
+ goto out_fd;
}
/* File flags are not inherited via accept() unlike another OSes. */
- if ((err = sock_map_fd(newsock)) < 0)
- goto out_release;
+ fd_install(newfd, newfile);
+ err = newfd;
security_socket_post_accept(sock, newsock);
out_put:
- sockfd_put(sock);
+ fput_light(sock->file, fput_needed);
out:
return err;
-out_release:
- sock_release(newsock);
+out_fd:
+ fput(newfile);
+ put_unused_fd(newfd);
goto out_put;
}
{
struct socket *sock;
char address[MAX_SOCK_ADDR];
- int err;
+ int err, fput_needed;
- sock = sockfd_lookup(fd, &err);
+ sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (!sock)
goto out;
err = move_addr_to_kernel(uservaddr, addrlen, address);
err = sock->ops->connect(sock, (struct sockaddr *) address, addrlen,
sock->file->f_flags);
out_put:
- sockfd_put(sock);
+ fput_light(sock->file, fput_needed);
out:
return err;
}
{
struct socket *sock;
char address[MAX_SOCK_ADDR];
- int len, err;
+ int len, err, fput_needed;
- sock = sockfd_lookup(fd, &err);
+ sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (!sock)
goto out;
err = move_addr_to_user(address, len, usockaddr, usockaddr_len);
out_put:
- sockfd_put(sock);
+ fput_light(sock->file, fput_needed);
out:
return err;
}
{
struct socket *sock;
char address[MAX_SOCK_ADDR];
- int len, err;
+ int len, err, fput_needed;
- if ((sock = sockfd_lookup(fd, &err))!=NULL)
- {
+ if ((sock = sockfd_lookup_light(fd, &err, &fput_needed)) != NULL) {
err = security_socket_getpeername(sock);
if (err) {
- sockfd_put(sock);
+ fput_light(sock->file, fput_needed);
return err;
}
err = sock->ops->getname(sock, (struct sockaddr *)address, &len, 1);
if (!err)
err=move_addr_to_user(address,len, usockaddr, usockaddr_len);
- sockfd_put(sock);
+ fput_light(sock->file, fput_needed);
}
return err;
}
int err;
struct msghdr msg;
struct iovec iov;
-
- sock = sockfd_lookup(fd, &err);
+ int fput_needed;
+ struct file *sock_file;
+
+ sock_file = fget_light(fd, &fput_needed);
+ if (!sock_file)
+ return -EBADF;
+
+ sock = sock_from_file(sock_file, &err);
if (!sock)
- goto out;
+ goto out_put;
iov.iov_base=buff;
iov.iov_len=len;
msg.msg_name=NULL;
msg.msg_control=NULL;
msg.msg_controllen=0;
msg.msg_namelen=0;
- if(addr)
- {
+ if (addr) {
err = move_addr_to_kernel(addr, addr_len, address);
if (err < 0)
goto out_put;
err = sock_sendmsg(sock, &msg, len);
out_put:
- sockfd_put(sock);
-out:
+ fput_light(sock_file, fput_needed);
return err;
}
struct msghdr msg;
char address[MAX_SOCK_ADDR];
int err,err2;
+ struct file *sock_file;
+ int fput_needed;
- sock = sockfd_lookup(fd, &err);
+ sock_file = fget_light(fd, &fput_needed);
+ if (!sock_file)
+ return -EBADF;
+
+ sock = sock_from_file(sock_file, &err);
if (!sock)
goto out;
if(err2<0)
err=err2;
}
- sockfd_put(sock);
out:
+ fput_light(sock_file, fput_needed);
return err;
}
asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen)
{
- int err;
+ int err, fput_needed;
struct socket *sock;
if (optlen < 0)
return -EINVAL;
- if ((sock = sockfd_lookup(fd, &err))!=NULL)
+ if ((sock = sockfd_lookup_light(fd, &err, &fput_needed)) != NULL)
{
err = security_socket_setsockopt(sock,level,optname);
- if (err) {
- sockfd_put(sock);
- return err;
- }
+ if (err)
+ goto out_put;
if (level == SOL_SOCKET)
err=sock_setsockopt(sock,level,optname,optval,optlen);
else
err=sock->ops->setsockopt(sock, level, optname, optval, optlen);
- sockfd_put(sock);
+out_put:
+ fput_light(sock->file, fput_needed);
}
return err;
}
asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen)
{
- int err;
+ int err, fput_needed;
struct socket *sock;
- if ((sock = sockfd_lookup(fd, &err))!=NULL)
- {
- err = security_socket_getsockopt(sock, level,
- optname);
- if (err) {
- sockfd_put(sock);
- return err;
- }
+ if ((sock = sockfd_lookup_light(fd, &err, &fput_needed)) != 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);
else
err=sock->ops->getsockopt(sock, level, optname, optval, optlen);
- sockfd_put(sock);
+out_put:
+ fput_light(sock->file, fput_needed);
}
return err;
}
asmlinkage long sys_shutdown(int fd, int how)
{
- int err;
+ int err, fput_needed;
struct socket *sock;
- if ((sock = sockfd_lookup(fd, &err))!=NULL)
+ if ((sock = sockfd_lookup_light(fd, &err, &fput_needed))!=NULL)
{
err = security_socket_shutdown(sock, how);
- if (err) {
- sockfd_put(sock);
- return err;
- }
-
- err=sock->ops->shutdown(sock, how);
- sockfd_put(sock);
+ if (!err)
+ err = sock->ops->shutdown(sock, how);
+ fput_light(sock->file, fput_needed);
}
return err;
}
struct socket *sock;
char address[MAX_SOCK_ADDR];
struct iovec iovstack[UIO_FASTIOV], *iov = iovstack;
- unsigned char ctl[sizeof(struct cmsghdr) + 20]; /* 20 is size of ipv6_pktinfo */
+ unsigned char ctl[sizeof(struct cmsghdr) + 20]
+ __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) {
} else if (copy_from_user(&msg_sys, msg, sizeof(struct msghdr)))
return -EFAULT;
- sock = sockfd_lookup(fd, &err);
+ sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (!sock)
goto out;
goto out_freeiov;
ctl_len = msg_sys.msg_controllen;
if ((MSG_CMSG_COMPAT & flags) && ctl_len) {
- err = cmsghdr_from_user_compat_to_kern(&msg_sys, 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 (iov != iovstack)
sock_kfree_s(sock->sk, iov, iov_size);
out_put:
- sockfd_put(sock);
+ fput_light(sock->file, fput_needed);
out:
return err;
}
struct msghdr msg_sys;
unsigned long cmsg_ptr;
int err, iov_size, total_len, len;
+ int fput_needed;
/* kernel mode address */
char addr[MAX_SOCK_ADDR];
if (copy_from_user(&msg_sys,msg,sizeof(struct msghdr)))
return -EFAULT;
- sock = sockfd_lookup(fd, &err);
+ sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (!sock)
goto out;
if (err < 0)
goto out_freeiov;
}
- err = __put_user(msg_sys.msg_flags, COMPAT_FLAGS(msg));
+ err = __put_user((msg_sys.msg_flags & ~MSG_CMSG_COMPAT),
+ COMPAT_FLAGS(msg));
if (err)
goto out_freeiov;
if (MSG_CMSG_COMPAT & flags)
if (iov != iovstack)
sock_kfree_s(sock->sk, iov, iov_size);
out_put:
- sockfd_put(sock);
+ fput_light(sock->file, fput_needed);
out:
return err;
}
return 0;
}
-
-extern void sk_init(void);
-
-void __init sock_init(void)
+static int __init sock_init(void)
{
/*
* Initialize sock SLAB cache.
sk_init();
-#ifdef SLAB_SKB
/*
* Initialize skbuff SLAB cache
*/
skb_init();
-#endif
/*
* Initialize the protocols module.
init_inodecache();
register_filesystem(&sock_fs_type);
sock_mnt = kern_mount(&sock_fs_type);
- /* The real protocol initialization is performed when
- * do_initcalls is run.
+
+ /* The real protocol initialization is performed in later initcalls.
*/
#ifdef CONFIG_NETFILTER
netfilter_init();
#endif
+
+ return 0;
}
+core_initcall(sock_init); /* early initcall */
+
int tux_Dprintk;
int tux_TDprintk;
int cpu;
int counter = 0;
- for (cpu = 0; cpu < NR_CPUS; cpu++)
+ for_each_possible_cpu(cpu)
counter += per_cpu(sockets_in_use, cpu);
/* It can be negative, by the way. 8) */
}
#endif /* CONFIG_PROC_FS */
+#ifdef CONFIG_COMPAT
+static long compat_sock_ioctl(struct file *file, unsigned cmd,
+ unsigned long arg)
+{
+ struct socket *sock = file->private_data;
+ int ret = -ENOIOCTLCMD;
+
+ if (sock->ops->compat_ioctl)
+ ret = sock->ops->compat_ioctl(sock, cmd, arg);
+
+ return ret;
+}
+#endif
+
/* ABI emulation layers need these two */
EXPORT_SYMBOL(move_addr_to_kernel);
EXPORT_SYMBOL(move_addr_to_user);
git://git.onelab.eu / linux-2.6.git / blobdiff