* Version: @(#)socket.c 1.1.93 18/02/95
*
* Authors: Orest Zborowski, <obz@Kodak.COM>
- * Ross Biro, <bir7@leland.Stanford.Edu>
+ * Ross Biro
* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
*
* Fixes:
* Based upon Swansea University Computer Society NET3.039
*/
-#include <linux/config.h>
#include <linux/mm.h>
#include <linux/smp_lock.h>
#include <linux/socket.h>
#include <linux/netdevice.h>
#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/syscalls.h>
#include <linux/compat.h>
#include <linux/kmod.h>
-
-#ifdef CONFIG_NET_RADIO
-#include <linux/wireless.h> /* Note : will define WIRELESS_EXT */
-#endif /* CONFIG_NET_RADIO */
+#include <linux/audit.h>
+#include <linux/wireless.h>
#include <asm/uaccess.h>
+#include <asm/unistd.h>
+
#include <net/compat.h>
#include <net/sock.h>
#include <linux/netfilter.h>
+#include <linux/vs_socket.h>
static int sock_no_open(struct inode *irrelevant, struct file *dontcare);
static ssize_t sock_aio_read(struct kiocb *iocb, char __user *buf,
static int sock_close(struct inode *inode, struct file *file);
static unsigned int sock_poll(struct file *file,
struct poll_table_struct *wait);
-static int sock_ioctl(struct inode *inode, struct file *file,
+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.
*/
-static struct file_operations socket_file_ops = {
+struct file_operations socket_file_ops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.aio_read = sock_aio_read,
.aio_write = sock_aio_write,
.poll = sock_poll,
- .ioctl = sock_ioctl,
+ .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,
};
/*
#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT)
static atomic_t net_family_lockct = ATOMIC_INIT(0);
-static spinlock_t net_family_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(net_family_lock);
/* The strategy is: modifications net_family vector are short, do not
sleep and veeery rare, but read access should be free of any exclusive
return 0;
if(copy_from_user(kaddr,uaddr,ulen))
return -EFAULT;
- return 0;
+ return audit_sockaddr(ulen, kaddr);
}
/**
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)
{
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,
- 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;
.statfs = simple_statfs,
};
-static struct super_block *sockfs_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data)
+static int sockfs_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
- return get_sb_pseudo(fs_type, "socket:", &sockfs_ops, SOCKFS_MAGIC);
+ return get_sb_pseudo(fs_type, "socket:", &sockfs_ops, SOCKFS_MAGIC,
+ mnt);
}
-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.
*/
-int sock_map_fd(struct socket *sock)
+static int sock_alloc_fd(struct file **filep)
{
int fd;
- struct qstr this;
- char name[32];
-
- /*
- * Find a file descriptor suitable for return to the user.
- */
fd = get_unused_fd();
- if (fd >= 0) {
+ if (likely(fd >= 0)) {
struct file *file = get_empty_filp();
- if (!file) {
+ *filep = file;
+ if (unlikely(!file)) {
put_unused_fd(fd);
- fd = -ENFILE;
- goto out;
+ return -ENFILE;
}
+ } else
+ *filep = NULL;
+ return fd;
+}
- sprintf(name, "[%lu]", SOCK_INODE(sock)->i_ino);
- this.name = name;
- this.len = strlen(name);
- this.hash = SOCK_INODE(sock)->i_ino;
+static int sock_attach_fd(struct socket *sock, struct file *file)
+{
+ struct qstr this;
+ char name[32];
- file->f_dentry = d_alloc(sock_mnt->mnt_sb->s_root, &this);
- if (!file->f_dentry) {
- put_filp(file);
+ this.len = sprintf(name, "[%lu]", SOCK_INODE(sock)->i_ino);
+ this.name = name;
+ this.hash = SOCK_INODE(sock)->i_ino;
+
+ file->f_dentry = d_alloc(sock_mnt->mnt_sb->s_root, &this);
+ 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;
+
+ 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 0;
+}
+
+int sock_map_fd(struct socket *sock)
+{
+ 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);
- fd = -ENOMEM;
- goto out;
+ return err;
}
- 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;
+ fd_install(fd, newfile);
+ }
+ return fd;
+}
- sock->file = file;
- file->f_op = SOCK_INODE(sock)->i_fop = &socket_file_ops;
- file->f_mode = 3;
- file->f_flags = O_RDWR;
- file->f_pos = 0;
- fd_install(fd, file);
+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;
}
-out:
- return fd;
+ sock = SOCKET_I(inode);
+ if (sock->file != file) {
+ printk(KERN_ERR "socki_lookup: socket file changed!\n");
+ sock->file = file;
+ }
+ return sock;
}
/**
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 (!inode->i_sock || !(sock = SOCKET_I(inode)))
- {
- *err = -ENOTSOCK;
+ sock = sock_from_file(file, err);
+ if (!sock)
fput(file);
- return NULL;
- }
+ return sock;
+}
- 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;
}
/**
sock = SOCKET_I(inode);
inode->i_mode = S_IFSOCK|S_IRWXUGO;
- inode->i_sock = 1;
inode->i_uid = current->fsuid;
inode->i_gid = current->fsgid;
return sock;
}
+EXPORT_SYMBOL_GPL(sock_alloc);
+
/*
* In theory you can't get an open on this inode, but /proc provides
* a back door. Remember to keep it shut otherwise you'll let the
return -ENXIO;
}
-struct file_operations bad_sock_fops = {
+const struct file_operations bad_sock_fops = {
.owner = THIS_MODULE,
.open = sock_no_open,
};
else
vx_sock_fail(sock->sk, size);
}
- vxdprintk("__sock_sendmsg: %p[%p,%p,%p;%d]:%d/%d\n",
+ vxdprintk(VXD_CBIT(net, 7),
+ "__sock_sendmsg: %p[%p,%p,%p;%d]:%d/%d",
sock, sock->sk,
(sock->sk)?sock->sk->sk_nx_info:0,
(sock->sk)?sock->sk->sk_vx_info:0,
(sock->sk)?sock->sk->sk_xid:0,
- size, len);
+ (unsigned int)size, len);
return len;
}
int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
{
struct kiocb iocb;
+ struct sock_iocb siocb;
int ret;
init_sync_kiocb(&iocb, NULL);
+ iocb.private = &siocb;
ret = __sock_sendmsg(&iocb, sock, msg, size);
if (-EIOCBQUEUED == ret)
ret = wait_on_sync_kiocb(&iocb);
return ret;
}
+int kernel_sendmsg(struct socket *sock, struct msghdr *msg,
+ struct kvec *vec, size_t num, size_t size)
+{
+ mm_segment_t oldfs = get_fs();
+ int result;
+
+ set_fs(KERNEL_DS);
+ /*
+ * 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;
+ result = sock_sendmsg(sock, msg, size);
+ set_fs(oldfs);
+ return result;
+}
static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t size, int flags)
len = sock->ops->recvmsg(iocb, sock, msg, size, flags);
if ((len >= 0) && sock->sk)
vx_sock_recv(sock->sk, len);
- vxdprintk("__sock_recvmsg: %p[%p,%p,%p;%d]:%d/%d\n",
+ vxdprintk(VXD_CBIT(net, 7),
+ "__sock_recvmsg: %p[%p,%p,%p;%d]:%d/%d",
sock, sock->sk,
(sock->sk)?sock->sk->sk_nx_info:0,
(sock->sk)?sock->sk->sk_vx_info:0,
(sock->sk)?sock->sk->sk_xid:0,
- size, len);
+ (unsigned int)size, len);
return len;
}
size_t size, int flags)
{
struct kiocb iocb;
+ struct sock_iocb siocb;
int ret;
init_sync_kiocb(&iocb, NULL);
+ iocb.private = &siocb;
ret = __sock_recvmsg(&iocb, sock, msg, size, flags);
if (-EIOCBQUEUED == ret)
ret = wait_on_sync_kiocb(&iocb);
return ret;
}
-/*
- * 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.
- */
+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;
-static ssize_t sock_aio_read(struct kiocb *iocb, char __user *ubuf,
- size_t size, loff_t pos)
+ set_fs(KERNEL_DS);
+ /*
+ * 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;
+ result = sock_recvmsg(sock, msg, size, flags);
+ set_fs(oldfs);
+ return result;
+}
+
+static void sock_aio_dtor(struct kiocb *iocb)
+{
+ kfree(iocb->private);
+}
+
+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 = kiocb_to_siocb(iocb);
struct socket *sock;
int flags;
- if (pos != 0)
- return -ESPIPE;
- if (size==0) /* Match SYS5 behaviour */
- return 0;
-
- sock = SOCKET_I(iocb->ki_filp->f_dentry->d_inode);
+ sock = file->private_data;
- 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;
+ flags = !(file->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT;
+ if (more)
+ flags |= MSG_MORE;
- return __sock_recvmsg(iocb, sock, &x->async_msg, size, flags);
+ return sock->ops->sendpage(sock, page, offset, size, flags);
}
-
-/*
- * Write data to a socket. We verify that the user area ubuf..ubuf+size-1
- * is readable by the user process.
- */
-
-static ssize_t sock_aio_write(struct kiocb *iocb, const char __user *ubuf,
- size_t size, loff_t pos)
+static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb,
+ char __user *ubuf, size_t size, struct sock_iocb *siocb)
{
- struct sock_iocb *x = kiocb_to_siocb(iocb);
- struct socket *sock;
-
- if (pos != 0)
- return -ESPIPE;
- if(size==0) /* Match SYS5 behaviour */
- return 0;
+ if (!is_sync_kiocb(iocb)) {
+ siocb = kmalloc(sizeof(*siocb), GFP_KERNEL);
+ if (!siocb)
+ return NULL;
+ iocb->ki_dtor = sock_aio_dtor;
+ }
- sock = SOCKET_I(iocb->ki_filp->f_dentry->d_inode);
+ siocb->kiocb = iocb;
+ siocb->async_iov.iov_base = ubuf;
+ siocb->async_iov.iov_len = size;
- 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);
+ iocb->private = siocb;
+ return siocb;
}
-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_read(struct msghdr *msg, struct kiocb *iocb,
+ struct file *file, struct iovec *iov, unsigned long nr_segs)
{
- struct socket *sock;
- int flags;
-
- if (ppos != &file->f_pos)
- return -ESPIPE;
+ 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;
- return sock->ops->sendpage(sock, page, offset, size, flags);
+ return __sock_recvmsg(iocb, sock, msg, size, msg->msg_flags);
}
-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_readv(struct file *file, const struct iovec *iov,
+ unsigned long nr_segs, loff_t *ppos)
{
+ struct kiocb iocb;
+ struct sock_iocb siocb;
struct msghdr msg;
- struct socket *sock;
+ 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_read(&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_read(struct kiocb *iocb, 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, ubuf, count, &siocb);
+ if (!x)
+ return -ENOMEM;
+ return do_sock_read(&x->async_msg, iocb, iocb->ki_filp,
+ &x->async_iov, 1);
}
-static ssize_t sock_readv(struct file *file, const struct iovec *vector,
- unsigned long count, loff_t *ppos)
+static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb,
+ struct file *file, struct iovec *iov, unsigned long nr_segs)
{
- size_t tot_len = 0;
+ struct socket *sock = file->private_data;
+ size_t size = 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);
+
+ 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_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_sendmsg(iocb, sock, msg, size);
}
-
-static ssize_t sock_writev(struct file *file, const struct iovec *vector,
- unsigned long count, loff_t *ppos)
+
+static ssize_t sock_writev(struct file *file, const struct iovec *iov,
+ unsigned long nr_segs, 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);
+ struct msghdr msg;
+ struct kiocb iocb;
+ struct sock_iocb siocb;
+ int ret;
+
+ init_sync_kiocb(&iocb, NULL);
+ iocb.private = &siocb;
+
+ ret = do_sock_write(&msg, &iocb, file, (struct iovec *)iov, nr_segs);
+ if (-EIOCBQUEUED == ret)
+ ret = wait_on_sync_kiocb(&iocb);
+ return ret;
+}
+
+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 (pos != 0)
+ return -ESPIPE;
+ if (count == 0) /* Match SYS5 behaviour */
+ return 0;
+
+ x = alloc_sock_iocb(iocb, (void __user *)ubuf, count, &siocb);
+ if (!x)
+ return -ENOMEM;
+
+ 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 int (*br_ioctl_hook)(unsigned long arg) = NULL;
+static DEFINE_MUTEX(br_ioctl_mutex);
+static int (*br_ioctl_hook)(unsigned int cmd, void __user *arg) = NULL;
-void brioctl_set(int (*hook)(unsigned long))
+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 int (*vlan_ioctl_hook)(unsigned long arg);
+static DEFINE_MUTEX(vlan_ioctl_mutex);
+static int (*vlan_ioctl_hook)(void __user *arg);
-void vlan_ioctl_set(int (*hook)(unsigned long))
+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 int (*dlci_ioctl_hook)(unsigned int, void *);
+static DEFINE_MUTEX(dlci_ioctl_mutex);
+static int (*dlci_ioctl_hook)(unsigned int, void __user *);
-void dlci_ioctl_set(int (*hook)(unsigned int, void *))
+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);
* what to do with it - that's up to the protocol still.
*/
-static int sock_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
{
struct socket *sock;
+ void __user *argp = (void __user *)arg;
int pid, err;
- unlock_kernel();
- sock = SOCKET_I(inode);
+ sock = file->private_data;
if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) {
- err = dev_ioctl(cmd, (void *)arg);
+ err = dev_ioctl(cmd, argp);
} else
-#ifdef WIRELESS_EXT
+#ifdef CONFIG_WIRELESS_EXT
if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) {
- err = dev_ioctl(cmd, (void *)arg);
+ err = dev_ioctl(cmd, argp);
} else
-#endif /* WIRELESS_EXT */
+#endif /* CONFIG_WIRELESS_EXT */
switch (cmd) {
case FIOSETOWN:
case SIOCSPGRP:
err = -EFAULT;
- if (get_user(pid, (int *)arg))
+ if (get_user(pid, (int __user *)argp))
break;
err = f_setown(sock->file, pid, 1);
break;
case FIOGETOWN:
case SIOCGPGRP:
- err = put_user(sock->file->f_owner.pid, (int *)arg);
+ err = put_user(sock->file->f_owner.pid, (int __user *)argp);
break;
case SIOCGIFBR:
case SIOCSIFBR:
+ case SIOCBRADDBR:
+ case SIOCBRDELBR:
err = -ENOPKG;
if (!br_ioctl_hook)
request_module("bridge");
- down(&br_ioctl_mutex);
+ mutex_lock(&br_ioctl_mutex);
if (br_ioctl_hook)
- err = br_ioctl_hook(arg);
- up(&br_ioctl_mutex);
+ err = br_ioctl_hook(cmd, argp);
+ 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(arg);
- up(&vlan_ioctl_mutex);
+ err = vlan_ioctl_hook(argp);
+ mutex_unlock(&vlan_ioctl_mutex);
break;
case SIOCGIFDIVERT:
case SIOCSIFDIVERT:
/* Convert this to call through a hook */
- err = divert_ioctl(cmd, (struct divert_cf *)arg);
+ err = divert_ioctl(cmd, argp);
break;
case SIOCADDDLCI:
case SIOCDELDLCI:
request_module("dlci");
if (dlci_ioctl_hook) {
- down(&dlci_ioctl_mutex);
- err = dlci_ioctl_hook(cmd, (void *)arg);
- up(&dlci_ioctl_mutex);
+ mutex_lock(&dlci_ioctl_mutex);
+ err = dlci_ioctl_hook(cmd, argp);
+ 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;
}
- lock_kernel();
-
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) {
- if (fna)
- kfree(fna);
+ kfree(fna);
return -EINVAL;
}
}
out:
+ if (sock->sk != sk)
+ BUG();
release_sock(sock->sk);
return 0;
}
static int __sock_create(int family, int type, int protocol, struct socket **res, int kern)
{
- int i;
int err;
struct socket *sock;
net_family_read_lock();
if (net_families[family] == NULL) {
- i = -EAFNOSUPPORT;
+ err = -EAFNOSUPPORT;
goto out;
}
* default.
*/
- if (!(sock = sock_alloc()))
- {
- printk(KERN_WARNING "socket: no more sockets\n");
- i = -ENFILE; /* Not exactly a match, but its the
+ 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 */
goto out;
}
* We will call the ->create function, that possibly is in a loadable
* module, so we have to bump that loadable module refcnt first.
*/
- i = -EAFNOSUPPORT;
+ err = -EAFNOSUPPORT;
if (!try_module_get(net_families[family]->owner))
goto out_release;
- if ((i = 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.
out:
net_family_read_unlock();
- return i;
+ return err;
out_module_put:
module_put(net_families[family]->owner);
out_release:
int sock_create_kern(int family, int type, int protocol, struct socket **res)
{
- return __sock_create(family, type, protocol, res, 1);
+ static struct lock_class_key sk_lock_internal_key;
+ int ret;
+ ret = __sock_create(family, type, protocol, res, 1);
+ if (!ret)
+ lockdep_set_class(&(*res)->sk->sk_lock.slock,
+ &sk_lock_internal_key);
+ return ret;
}
asmlinkage long sys_socket(int family, int type, int protocol)
{
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;
- err = -EMFILE;
+ err = -ENFILE;
if (!(newsock = sock_alloc()))
goto out_put;
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;
}
+#ifdef __ARCH_WANT_SYS_SOCKETCALL
+
/* 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),
/* 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);
+ if (err)
+ return err;
+
a0=a[0];
a1=a[1];
return err;
}
+#endif /* __ARCH_WANT_SYS_SOCKETCALL */
+
/*
* This function is called by a protocol handler that wants to
* advertise its address family, and have it linked into the
return 0;
}
-
-extern void sk_init(void);
-
-void __init sock_init(void)
+static int __init sock_init(void)
{
- int i;
-
- /*
- * Initialize all address (protocol) families.
- */
-
- for (i = 0; i < NPROTO; i++)
- net_families[i] = NULL;
-
/*
* 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;
+
+struct module *tux_module = NULL;
+
+#ifdef CONFIG_TUX_MODULE
+
+asmlinkage long (*sys_tux_ptr) (unsigned int action, user_req_t *u_info) = NULL;
+spinlock_t tux_module_lock = SPIN_LOCK_UNLOCKED;
+
+asmlinkage long sys_tux (unsigned int action, user_req_t *u_info)
+{
+ int ret;
+
+ if (current->tux_info)
+ return sys_tux_ptr(action, u_info);
+
+ ret = -ENOSYS;
+ spin_lock(&tux_module_lock);
+ if (!tux_module)
+ goto out_unlock;
+ if (!try_module_get(tux_module))
+ goto out_unlock;
+ spin_unlock(&tux_module_lock);
+
+ if (!sys_tux_ptr)
+ TUX_BUG();
+ ret = sys_tux_ptr(action, u_info);
+
+ spin_lock(&tux_module_lock);
+ module_put(tux_module);
+out_unlock:
+ spin_unlock(&tux_module_lock);
+
+ return ret;
}
+EXPORT_SYMBOL_GPL(tux_module);
+EXPORT_SYMBOL_GPL(tux_module_lock);
+EXPORT_SYMBOL_GPL(sys_tux_ptr);
+
+EXPORT_SYMBOL_GPL(tux_Dprintk);
+EXPORT_SYMBOL_GPL(tux_TDprintk);
+
+#endif
#ifdef CONFIG_PROC_FS
void socket_seq_show(struct seq_file *seq)
{
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);
-EXPORT_SYMBOL(sock_alloc);
-EXPORT_SYMBOL(sock_alloc_inode);
EXPORT_SYMBOL(sock_create);
EXPORT_SYMBOL(sock_create_kern);
EXPORT_SYMBOL(sock_create_lite);
EXPORT_SYMBOL(sock_unregister);
EXPORT_SYMBOL(sock_wake_async);
EXPORT_SYMBOL(sockfd_lookup);
+EXPORT_SYMBOL(kernel_sendmsg);
+EXPORT_SYMBOL(kernel_recvmsg);