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net/socket.c
74.8 KB
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/* * NET An implementation of the SOCKET network access protocol. * * Version: @(#)socket.c 1.1.93 18/02/95 * * Authors: Orest Zborowski, <obz@Kodak.COM> |
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* Ross Biro |
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* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> * * Fixes: * Anonymous : NOTSOCK/BADF cleanup. Error fix in * shutdown() * Alan Cox : verify_area() fixes * Alan Cox : Removed DDI * Jonathan Kamens : SOCK_DGRAM reconnect bug * Alan Cox : Moved a load of checks to the very * top level. * Alan Cox : Move address structures to/from user * mode above the protocol layers. * Rob Janssen : Allow 0 length sends. * Alan Cox : Asynchronous I/O support (cribbed from the * tty drivers). * Niibe Yutaka : Asynchronous I/O for writes (4.4BSD style) * Jeff Uphoff : Made max number of sockets command-line * configurable. * Matti Aarnio : Made the number of sockets dynamic, * to be allocated when needed, and mr. * Uphoff's max is used as max to be * allowed to allocate. * Linus : Argh. removed all the socket allocation * altogether: it's in the inode now. * Alan Cox : Made sock_alloc()/sock_release() public * for NetROM and future kernel nfsd type * stuff. * Alan Cox : sendmsg/recvmsg basics. * Tom Dyas : Export net symbols. * Marcin Dalecki : Fixed problems with CONFIG_NET="n". * Alan Cox : Added thread locking to sys_* calls * for sockets. May have errors at the * moment. * Kevin Buhr : Fixed the dumb errors in the above. * Andi Kleen : Some small cleanups, optimizations, * and fixed a copy_from_user() bug. * Tigran Aivazian : sys_send(args) calls sys_sendto(args, NULL, 0) |
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* Tigran Aivazian : Made listen(2) backlog sanity checks |
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* protocol-independent * * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * * * This module is effectively the top level interface to the BSD socket |
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* paradigm. |
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* * Based upon Swansea University Computer Society NET3.039 */ |
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#include <linux/mm.h> |
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#include <linux/socket.h> #include <linux/file.h> #include <linux/net.h> #include <linux/interrupt.h> |
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#include <linux/thread_info.h> |
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#include <linux/rcupdate.h> |
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#include <linux/netdevice.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> |
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#include <linux/mutex.h> |
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#include <linux/wanrouter.h> #include <linux/if_bridge.h> |
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#include <linux/if_frad.h> #include <linux/if_vlan.h> |
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#include <linux/init.h> #include <linux/poll.h> #include <linux/cache.h> #include <linux/module.h> #include <linux/highmem.h> |
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#include <linux/mount.h> #include <linux/security.h> #include <linux/syscalls.h> #include <linux/compat.h> #include <linux/kmod.h> |
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#include <linux/audit.h> |
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#include <linux/wireless.h> |
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#include <linux/nsproxy.h> |
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#include <linux/magic.h> |
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#include <asm/uaccess.h> #include <asm/unistd.h> #include <net/compat.h> |
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#include <net/wext.h> |
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#include <net/sock.h> #include <linux/netfilter.h> |
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#include <linux/if_tun.h> #include <linux/ipv6_route.h> #include <linux/route.h> |
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#include <linux/sockios.h> #include <linux/atalk.h> |
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static int sock_no_open(struct inode *irrelevant, struct file *dontcare); |
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static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov, unsigned long nr_segs, loff_t pos); static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov, unsigned long nr_segs, loff_t pos); |
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static int sock_mmap(struct file *file, struct vm_area_struct *vma); |
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static int sock_close(struct inode *inode, struct file *file); static unsigned int sock_poll(struct file *file, struct poll_table_struct *wait); |
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static long sock_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
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#ifdef CONFIG_COMPAT static long compat_sock_ioctl(struct file *file, |
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unsigned int cmd, unsigned long arg); |
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#endif |
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static int sock_fasync(int fd, struct file *filp, int on); |
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static ssize_t sock_sendpage(struct file *file, struct page *page, int offset, size_t size, loff_t *ppos, int more); |
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static ssize_t sock_splice_read(struct file *file, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, unsigned int flags); |
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/* * 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. */ |
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static const struct file_operations socket_file_ops = { |
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.owner = THIS_MODULE, .llseek = no_llseek, .aio_read = sock_aio_read, .aio_write = sock_aio_write, .poll = sock_poll, .unlocked_ioctl = sock_ioctl, |
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#ifdef CONFIG_COMPAT .compat_ioctl = compat_sock_ioctl, #endif |
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.mmap = sock_mmap, .open = sock_no_open, /* special open code to disallow open via /proc */ .release = sock_close, .fasync = sock_fasync, |
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.sendpage = sock_sendpage, .splice_write = generic_splice_sendpage, |
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.splice_read = sock_splice_read, |
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}; /* * The protocol list. Each protocol is registered in here. */ |
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static DEFINE_SPINLOCK(net_family_lock); |
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static const struct net_proto_family *net_families[NPROTO] __read_mostly; |
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|
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/* * Statistics counters of the socket lists */ static DEFINE_PER_CPU(int, sockets_in_use) = 0; /* |
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* Support routines. * Move socket addresses back and forth across the kernel/user * divide and look after the messy bits. |
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*/ |
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#define MAX_SOCK_ADDR 128 /* 108 for Unix domain - |
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16 for IP, 16 for IPX, 24 for IPv6, |
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about 80 for AX.25 |
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must be at least one bigger than the AF_UNIX size (see net/unix/af_unix.c |
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:unix_mkname()). |
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*/ |
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/** * move_addr_to_kernel - copy a socket address into kernel space * @uaddr: Address in user space * @kaddr: Address in kernel space * @ulen: Length in user space * * The address is copied into kernel space. If the provided address is * too long an error code of -EINVAL is returned. If the copy gives * invalid addresses -EFAULT is returned. On a success 0 is returned. */ |
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int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr) |
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{ |
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if (ulen < 0 || ulen > sizeof(struct sockaddr_storage)) |
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return -EINVAL; |
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if (ulen == 0) |
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return 0; |
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if (copy_from_user(kaddr, uaddr, ulen)) |
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return -EFAULT; |
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return audit_sockaddr(ulen, kaddr); |
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} /** * move_addr_to_user - copy an address to user space * @kaddr: kernel space address * @klen: length of address in kernel * @uaddr: user space address * @ulen: pointer to user length field * * The value pointed to by ulen on entry is the buffer length available. * This is overwritten with the buffer space used. -EINVAL is returned * if an overlong buffer is specified or a negative buffer size. -EFAULT * is returned if either the buffer or the length field are not * accessible. * After copying the data up to the limit the user specifies, the true * length of the data is written over the length limit the user * specified. Zero is returned for a success. */ |
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int move_addr_to_user(struct sockaddr *kaddr, int klen, void __user *uaddr, |
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int __user *ulen) |
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{ int err; int len; |
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err = get_user(len, ulen); if (err) |
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return err; |
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if (len > klen) len = klen; |
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if (len < 0 || len > sizeof(struct sockaddr_storage)) |
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return -EINVAL; |
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if (len) { |
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if (audit_sockaddr(klen, kaddr)) return -ENOMEM; |
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if (copy_to_user(uaddr, kaddr, len)) |
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return -EFAULT; } /* |
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* "fromlen shall refer to the value before truncation.." * 1003.1g |
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*/ return __put_user(klen, ulen); } |
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static struct kmem_cache *sock_inode_cachep __read_mostly; |
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static struct inode *sock_alloc_inode(struct super_block *sb) { struct socket_alloc *ei; |
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ei = kmem_cache_alloc(sock_inode_cachep, GFP_KERNEL); |
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if (!ei) return NULL; init_waitqueue_head(&ei->socket.wait); |
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ei->socket.fasync_list = NULL; ei->socket.state = SS_UNCONNECTED; ei->socket.flags = 0; ei->socket.ops = NULL; ei->socket.sk = NULL; ei->socket.file = NULL; |
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return &ei->vfs_inode; } static void sock_destroy_inode(struct inode *inode) { kmem_cache_free(sock_inode_cachep, container_of(inode, struct socket_alloc, vfs_inode)); } |
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static void init_once(void *foo) |
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{ |
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struct socket_alloc *ei = (struct socket_alloc *)foo; |
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inode_init_once(&ei->vfs_inode); |
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} |
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static int init_inodecache(void) { sock_inode_cachep = kmem_cache_create("sock_inode_cache", |
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sizeof(struct socket_alloc), 0, (SLAB_HWCACHE_ALIGN | SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD), |
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init_once); |
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if (sock_inode_cachep == NULL) return -ENOMEM; return 0; } |
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static const struct super_operations sockfs_ops = { |
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.alloc_inode = sock_alloc_inode, .destroy_inode =sock_destroy_inode, .statfs = simple_statfs, }; |
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static int sockfs_get_sb(struct file_system_type *fs_type, |
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int flags, const char *dev_name, void *data, struct vfsmount *mnt) |
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{ |
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return get_sb_pseudo(fs_type, "socket:", &sockfs_ops, SOCKFS_MAGIC, mnt); |
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} |
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static struct vfsmount *sock_mnt __read_mostly; |
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static struct file_system_type sock_fs_type = { .name = "sockfs", .get_sb = sockfs_get_sb, .kill_sb = kill_anon_super, }; |
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/* * sockfs_dname() is called from d_path(). */ static char *sockfs_dname(struct dentry *dentry, char *buffer, int buflen) { return dynamic_dname(dentry, buffer, buflen, "socket:[%lu]", dentry->d_inode->i_ino); } |
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static const struct dentry_operations sockfs_dentry_operations = { |
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.d_dname = sockfs_dname, |
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}; /* * Obtains the first available file descriptor and sets it up for use. * |
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* These functions create file structures and maps them to fd space * of the current process. On success it returns file descriptor |
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* 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 * to socket after mapping. If one day we will need it, this * function will increment ref. count on file by 1. * * In any case returned fd MAY BE not valid! * This race condition is unavoidable * with shared fd spaces, we cannot solve it inside kernel, * but we take care of internal coherence yet. */ |
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static int sock_alloc_file(struct socket *sock, struct file **f, int flags) |
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{ |
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struct qstr name = { .name = "" }; |
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struct path path; |
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struct file *file; |
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int fd; |
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fd = get_unused_fd_flags(flags); |
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if (unlikely(fd < 0)) return fd; |
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path.dentry = d_alloc(sock_mnt->mnt_sb->s_root, &name); if (unlikely(!path.dentry)) { |
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put_unused_fd(fd); |
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return -ENOMEM; |
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} |
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path.mnt = mntget(sock_mnt); |
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path.dentry->d_op = &sockfs_dentry_operations; |
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d_instantiate(path.dentry, SOCK_INODE(sock)); |
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SOCK_INODE(sock)->i_fop = &socket_file_ops; |
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file = alloc_file(&path, FMODE_READ | FMODE_WRITE, |
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&socket_file_ops); |
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if (unlikely(!file)) { /* drop dentry, keep inode */ atomic_inc(&path.dentry->d_inode->i_count); |
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path_put(&path); |
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put_unused_fd(fd); return -ENFILE; } sock->file = file; |
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file->f_flags = O_RDWR | (flags & O_NONBLOCK); |
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file->f_pos = 0; file->private_data = sock; |
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*f = file; return fd; |
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} |
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int sock_map_fd(struct socket *sock, int flags) |
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{ struct file *newfile; |
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int fd = sock_alloc_file(sock, &newfile, flags); |
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if (likely(fd >= 0)) |
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fd_install(fd, newfile); |
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return fd; } |
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static struct socket *sock_from_file(struct file *file, int *err) { |
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if (file->f_op == &socket_file_ops) return file->private_data; /* set in sock_map_fd */ |
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*err = -ENOTSOCK; return NULL; |
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} |
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/** * sockfd_lookup - Go from a file number to its socket slot * @fd: file handle * @err: pointer to an error code return * * The file handle passed in is locked and the socket it is bound * too is returned. If an error occurs the err pointer is overwritten * with a negative errno code and NULL is returned. The function checks * for both invalid handles and passing a handle which is not a socket. * * On a success the socket object pointer is returned. */ struct socket *sockfd_lookup(int fd, int *err) { struct file *file; |
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struct socket *sock; |
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file = fget(fd); if (!file) { |
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*err = -EBADF; return NULL; } |
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sock = sock_from_file(file, err); if (!sock) |
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fput(file); |
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return sock; } |
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static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed) { struct file *file; struct socket *sock; |
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*err = -EBADF; |
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file = fget_light(fd, fput_needed); if (file) { sock = sock_from_file(file, err); if (sock) return sock; fput_light(file, *fput_needed); |
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} |
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return NULL; |
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} /** * sock_alloc - allocate a socket |
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* |
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* 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. */ static struct socket *sock_alloc(void) { |
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struct inode *inode; struct socket *sock; |
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inode = new_inode(sock_mnt->mnt_sb); if (!inode) return NULL; sock = SOCKET_I(inode); |
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kmemcheck_annotate_bitfield(sock, type); |
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inode->i_mode = S_IFSOCK | S_IRWXUGO; |
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inode->i_uid = current_fsuid(); inode->i_gid = current_fsgid(); |
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percpu_add(sockets_in_use, 1); |
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return sock; } /* * 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 * creepy crawlies in. */ |
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static int sock_no_open(struct inode *irrelevant, struct file *dontcare) { return -ENXIO; } |
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const struct file_operations bad_sock_fops = { |
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.owner = THIS_MODULE, .open = sock_no_open, }; /** * sock_release - close a socket * @sock: socket to close * * 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 |
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* an inode not a file. |
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*/ |
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void sock_release(struct socket *sock) { if (sock->ops) { struct module *owner = sock->ops->owner; sock->ops->release(sock); sock->ops = NULL; module_put(owner); } if (sock->fasync_list) printk(KERN_ERR "sock_release: fasync list not empty! "); |
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percpu_sub(sockets_in_use, 1); |
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if (!sock->file) { iput(SOCK_INODE(sock)); return; } |
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sock->file = NULL; |
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} |
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int sock_tx_timestamp(struct msghdr *msg, struct sock *sk, union skb_shared_tx *shtx) { shtx->flags = 0; if (sock_flag(sk, SOCK_TIMESTAMPING_TX_HARDWARE)) shtx->hardware = 1; if (sock_flag(sk, SOCK_TIMESTAMPING_TX_SOFTWARE)) shtx->software = 1; return 0; } EXPORT_SYMBOL(sock_tx_timestamp); |
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static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
1da177e4c
|
514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 |
struct msghdr *msg, size_t size) { struct sock_iocb *si = kiocb_to_siocb(iocb); int err; si->sock = sock; si->scm = NULL; si->msg = msg; si->size = size; err = security_socket_sendmsg(sock, msg, size); if (err) return err; return sock->ops->sendmsg(iocb, sock, msg, size); } 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 */ |
89bddce58
|
556 |
msg->msg_iov = (struct iovec *)vec; |
1da177e4c
|
557 558 559 560 561 |
msg->msg_iovlen = num; result = sock_sendmsg(sock, msg, size); set_fs(oldfs); return result; } |
20d494735
|
562 563 564 565 566 567 568 569 570 |
static int ktime2ts(ktime_t kt, struct timespec *ts) { if (kt.tv64) { *ts = ktime_to_timespec(kt); return 1; } else { return 0; } } |
92f37fd2e
|
571 572 573 574 575 576 |
/* * called from sock_recv_timestamp() if sock_flag(sk, SOCK_RCVTSTAMP) */ void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb) { |
20d494735
|
577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 |
int need_software_tstamp = sock_flag(sk, SOCK_RCVTSTAMP); struct timespec ts[3]; int empty = 1; struct skb_shared_hwtstamps *shhwtstamps = skb_hwtstamps(skb); /* Race occurred between timestamp enabling and packet receiving. Fill in the current time for now. */ if (need_software_tstamp && skb->tstamp.tv64 == 0) __net_timestamp(skb); if (need_software_tstamp) { if (!sock_flag(sk, SOCK_RCVTSTAMPNS)) { struct timeval tv; skb_get_timestamp(skb, &tv); put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMP, sizeof(tv), &tv); } else { struct timespec ts; skb_get_timestampns(skb, &ts); put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMPNS, sizeof(ts), &ts); } } memset(ts, 0, sizeof(ts)); if (skb->tstamp.tv64 && sock_flag(sk, SOCK_TIMESTAMPING_SOFTWARE)) { skb_get_timestampns(skb, ts + 0); empty = 0; } if (shhwtstamps) { if (sock_flag(sk, SOCK_TIMESTAMPING_SYS_HARDWARE) && ktime2ts(shhwtstamps->syststamp, ts + 1)) empty = 0; if (sock_flag(sk, SOCK_TIMESTAMPING_RAW_HARDWARE) && ktime2ts(shhwtstamps->hwtstamp, ts + 2)) empty = 0; |
92f37fd2e
|
616 |
} |
20d494735
|
617 618 619 |
if (!empty) put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMPING, sizeof(ts), &ts); |
92f37fd2e
|
620 |
} |
7c81fd8bf
|
621 |
EXPORT_SYMBOL_GPL(__sock_recv_timestamp); |
3b885787e
|
622 623 624 625 626 627 628 629 630 631 632 633 634 635 |
inline void sock_recv_drops(struct msghdr *msg, struct sock *sk, struct sk_buff *skb) { if (sock_flag(sk, SOCK_RXQ_OVFL) && skb && skb->dropcount) put_cmsg(msg, SOL_SOCKET, SO_RXQ_OVFL, sizeof(__u32), &skb->dropcount); } void sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk, struct sk_buff *skb) { sock_recv_timestamp(msg, sk, skb); sock_recv_drops(msg, sk, skb); } EXPORT_SYMBOL_GPL(sock_recv_ts_and_drops); |
a2e272554
|
636 637 |
static inline int __sock_recvmsg_nosec(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t size, int flags) |
1da177e4c
|
638 |
{ |
1da177e4c
|
639 640 641 642 643 644 645 |
struct sock_iocb *si = kiocb_to_siocb(iocb); si->sock = sock; si->scm = NULL; si->msg = msg; si->size = size; si->flags = flags; |
1da177e4c
|
646 647 |
return sock->ops->recvmsg(iocb, sock, msg, size, flags); } |
a2e272554
|
648 649 650 651 652 653 654 |
static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t size, int flags) { int err = security_socket_recvmsg(sock, msg, size, flags); return err ?: __sock_recvmsg_nosec(iocb, sock, msg, size, flags); } |
89bddce58
|
655 |
int sock_recvmsg(struct socket *sock, struct msghdr *msg, |
1da177e4c
|
656 657 658 659 660 |
size_t size, int flags) { struct kiocb iocb; struct sock_iocb siocb; int ret; |
89bddce58
|
661 |
init_sync_kiocb(&iocb, NULL); |
1da177e4c
|
662 663 664 665 666 667 |
iocb.private = &siocb; ret = __sock_recvmsg(&iocb, sock, msg, size, flags); if (-EIOCBQUEUED == ret) ret = wait_on_sync_kiocb(&iocb); return ret; } |
a2e272554
|
668 669 670 671 672 673 674 675 676 677 678 679 680 681 |
static int sock_recvmsg_nosec(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); iocb.private = &siocb; ret = __sock_recvmsg_nosec(&iocb, sock, msg, size, flags); if (-EIOCBQUEUED == ret) ret = wait_on_sync_kiocb(&iocb); return ret; } |
89bddce58
|
682 683 |
int kernel_recvmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec, size_t num, size_t size, int flags) |
1da177e4c
|
684 685 686 687 688 689 690 691 692 |
{ 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 */ |
89bddce58
|
693 |
msg->msg_iov = (struct iovec *)vec, msg->msg_iovlen = num; |
1da177e4c
|
694 695 696 697 698 699 700 701 702 |
result = sock_recvmsg(sock, msg, size, flags); set_fs(oldfs); return result; } static void sock_aio_dtor(struct kiocb *iocb) { kfree(iocb->private); } |
ce1d4d3e8
|
703 704 |
static ssize_t sock_sendpage(struct file *file, struct page *page, int offset, size_t size, loff_t *ppos, int more) |
1da177e4c
|
705 |
{ |
1da177e4c
|
706 707 |
struct socket *sock; int flags; |
ce1d4d3e8
|
708 709 710 711 712 |
sock = file->private_data; flags = !(file->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT; if (more) flags |= MSG_MORE; |
e69495838
|
713 |
return kernel_sendpage(sock, page, offset, size, flags); |
ce1d4d3e8
|
714 |
} |
1da177e4c
|
715 |
|
9c55e01c0
|
716 717 718 719 720 |
static ssize_t sock_splice_read(struct file *file, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, unsigned int flags) { struct socket *sock = file->private_data; |
997b37da1
|
721 722 |
if (unlikely(!sock->ops->splice_read)) return -EINVAL; |
9c55e01c0
|
723 724 |
return sock->ops->splice_read(sock, ppos, pipe, len, flags); } |
ce1d4d3e8
|
725 |
static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb, |
89bddce58
|
726 |
struct sock_iocb *siocb) |
ce1d4d3e8
|
727 728 729 730 731 |
{ if (!is_sync_kiocb(iocb)) { siocb = kmalloc(sizeof(*siocb), GFP_KERNEL); if (!siocb) return NULL; |
1da177e4c
|
732 733 |
iocb->ki_dtor = sock_aio_dtor; } |
1da177e4c
|
734 |
|
ce1d4d3e8
|
735 |
siocb->kiocb = iocb; |
ce1d4d3e8
|
736 737 |
iocb->private = siocb; return siocb; |
1da177e4c
|
738 |
} |
ce1d4d3e8
|
739 |
static ssize_t do_sock_read(struct msghdr *msg, struct kiocb *iocb, |
027445c37
|
740 741 |
struct file *file, const struct iovec *iov, unsigned long nr_segs) |
ce1d4d3e8
|
742 743 744 745 |
{ struct socket *sock = file->private_data; size_t size = 0; int i; |
1da177e4c
|
746 |
|
89bddce58
|
747 748 |
for (i = 0; i < nr_segs; i++) size += iov[i].iov_len; |
1da177e4c
|
749 |
|
ce1d4d3e8
|
750 751 752 753 |
msg->msg_name = NULL; msg->msg_namelen = 0; msg->msg_control = NULL; msg->msg_controllen = 0; |
89bddce58
|
754 |
msg->msg_iov = (struct iovec *)iov; |
ce1d4d3e8
|
755 756 757 758 759 |
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); } |
027445c37
|
760 761 |
static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov, unsigned long nr_segs, loff_t pos) |
ce1d4d3e8
|
762 763 |
{ struct sock_iocb siocb, *x; |
1da177e4c
|
764 765 |
if (pos != 0) return -ESPIPE; |
027445c37
|
766 767 |
if (iocb->ki_left == 0) /* Match SYS5 behaviour */ |
1da177e4c
|
768 |
return 0; |
027445c37
|
769 770 |
x = alloc_sock_iocb(iocb, &siocb); |
ce1d4d3e8
|
771 772 |
if (!x) return -ENOMEM; |
027445c37
|
773 |
return do_sock_read(&x->async_msg, iocb, iocb->ki_filp, iov, nr_segs); |
1da177e4c
|
774 |
} |
ce1d4d3e8
|
775 |
static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb, |
027445c37
|
776 777 |
struct file *file, const struct iovec *iov, unsigned long nr_segs) |
1da177e4c
|
778 |
{ |
ce1d4d3e8
|
779 780 781 |
struct socket *sock = file->private_data; size_t size = 0; int i; |
1da177e4c
|
782 |
|
89bddce58
|
783 784 |
for (i = 0; i < nr_segs; i++) size += iov[i].iov_len; |
1da177e4c
|
785 |
|
ce1d4d3e8
|
786 787 788 789 |
msg->msg_name = NULL; msg->msg_namelen = 0; msg->msg_control = NULL; msg->msg_controllen = 0; |
89bddce58
|
790 |
msg->msg_iov = (struct iovec *)iov; |
ce1d4d3e8
|
791 792 793 794 |
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; |
1da177e4c
|
795 |
|
ce1d4d3e8
|
796 |
return __sock_sendmsg(iocb, sock, msg, size); |
1da177e4c
|
797 |
} |
027445c37
|
798 799 |
static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov, unsigned long nr_segs, loff_t pos) |
ce1d4d3e8
|
800 801 |
{ struct sock_iocb siocb, *x; |
1da177e4c
|
802 |
|
ce1d4d3e8
|
803 804 |
if (pos != 0) return -ESPIPE; |
027445c37
|
805 |
|
027445c37
|
806 |
x = alloc_sock_iocb(iocb, &siocb); |
ce1d4d3e8
|
807 808 |
if (!x) return -ENOMEM; |
1da177e4c
|
809 |
|
027445c37
|
810 |
return do_sock_write(&x->async_msg, iocb, iocb->ki_filp, iov, nr_segs); |
1da177e4c
|
811 |
} |
1da177e4c
|
812 813 814 815 |
/* * Atomic setting of ioctl hooks to avoid race * with module unload. */ |
4a3e2f711
|
816 |
static DEFINE_MUTEX(br_ioctl_mutex); |
881d966b4
|
817 |
static int (*br_ioctl_hook) (struct net *, unsigned int cmd, void __user *arg) = NULL; |
1da177e4c
|
818 |
|
881d966b4
|
819 |
void brioctl_set(int (*hook) (struct net *, unsigned int, void __user *)) |
1da177e4c
|
820 |
{ |
4a3e2f711
|
821 |
mutex_lock(&br_ioctl_mutex); |
1da177e4c
|
822 |
br_ioctl_hook = hook; |
4a3e2f711
|
823 |
mutex_unlock(&br_ioctl_mutex); |
1da177e4c
|
824 |
} |
89bddce58
|
825 |
|
1da177e4c
|
826 |
EXPORT_SYMBOL(brioctl_set); |
4a3e2f711
|
827 |
static DEFINE_MUTEX(vlan_ioctl_mutex); |
881d966b4
|
828 |
static int (*vlan_ioctl_hook) (struct net *, void __user *arg); |
1da177e4c
|
829 |
|
881d966b4
|
830 |
void vlan_ioctl_set(int (*hook) (struct net *, void __user *)) |
1da177e4c
|
831 |
{ |
4a3e2f711
|
832 |
mutex_lock(&vlan_ioctl_mutex); |
1da177e4c
|
833 |
vlan_ioctl_hook = hook; |
4a3e2f711
|
834 |
mutex_unlock(&vlan_ioctl_mutex); |
1da177e4c
|
835 |
} |
89bddce58
|
836 |
|
1da177e4c
|
837 |
EXPORT_SYMBOL(vlan_ioctl_set); |
4a3e2f711
|
838 |
static DEFINE_MUTEX(dlci_ioctl_mutex); |
89bddce58
|
839 |
static int (*dlci_ioctl_hook) (unsigned int, void __user *); |
1da177e4c
|
840 |
|
89bddce58
|
841 |
void dlci_ioctl_set(int (*hook) (unsigned int, void __user *)) |
1da177e4c
|
842 |
{ |
4a3e2f711
|
843 |
mutex_lock(&dlci_ioctl_mutex); |
1da177e4c
|
844 |
dlci_ioctl_hook = hook; |
4a3e2f711
|
845 |
mutex_unlock(&dlci_ioctl_mutex); |
1da177e4c
|
846 |
} |
89bddce58
|
847 |
|
1da177e4c
|
848 |
EXPORT_SYMBOL(dlci_ioctl_set); |
6b96018b2
|
849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 |
static long sock_do_ioctl(struct net *net, struct socket *sock, unsigned int cmd, unsigned long arg) { int err; void __user *argp = (void __user *)arg; 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(net, cmd, argp); return err; } |
1da177e4c
|
866 867 868 869 870 871 872 873 |
/* * With an ioctl, arg may well be a user mode pointer, but we don't know * what to do with it - that's up to the protocol still. */ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg) { struct socket *sock; |
881d966b4
|
874 |
struct sock *sk; |
1da177e4c
|
875 876 |
void __user *argp = (void __user *)arg; int pid, err; |
881d966b4
|
877 |
struct net *net; |
1da177e4c
|
878 |
|
b69aee04f
|
879 |
sock = file->private_data; |
881d966b4
|
880 |
sk = sock->sk; |
3b1e0a655
|
881 |
net = sock_net(sk); |
1da177e4c
|
882 |
if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) { |
881d966b4
|
883 |
err = dev_ioctl(net, cmd, argp); |
1da177e4c
|
884 |
} else |
3d23e349d
|
885 |
#ifdef CONFIG_WEXT_CORE |
1da177e4c
|
886 |
if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) { |
881d966b4
|
887 |
err = dev_ioctl(net, cmd, argp); |
1da177e4c
|
888 |
} else |
3d23e349d
|
889 |
#endif |
89bddce58
|
890 |
switch (cmd) { |
1da177e4c
|
891 892 893 894 895 896 897 898 899 |
case FIOSETOWN: case SIOCSPGRP: err = -EFAULT; if (get_user(pid, (int __user *)argp)) break; err = f_setown(sock->file, pid, 1); break; case FIOGETOWN: case SIOCGPGRP: |
609d7fa95
|
900 |
err = put_user(f_getown(sock->file), |
89bddce58
|
901 |
(int __user *)argp); |
1da177e4c
|
902 903 904 905 906 907 908 909 |
break; case SIOCGIFBR: case SIOCSIFBR: case SIOCBRADDBR: case SIOCBRDELBR: err = -ENOPKG; if (!br_ioctl_hook) request_module("bridge"); |
4a3e2f711
|
910 |
mutex_lock(&br_ioctl_mutex); |
89bddce58
|
911 |
if (br_ioctl_hook) |
881d966b4
|
912 |
err = br_ioctl_hook(net, cmd, argp); |
4a3e2f711
|
913 |
mutex_unlock(&br_ioctl_mutex); |
1da177e4c
|
914 915 916 917 918 919 |
break; case SIOCGIFVLAN: case SIOCSIFVLAN: err = -ENOPKG; if (!vlan_ioctl_hook) request_module("8021q"); |
4a3e2f711
|
920 |
mutex_lock(&vlan_ioctl_mutex); |
1da177e4c
|
921 |
if (vlan_ioctl_hook) |
881d966b4
|
922 |
err = vlan_ioctl_hook(net, argp); |
4a3e2f711
|
923 |
mutex_unlock(&vlan_ioctl_mutex); |
1da177e4c
|
924 |
break; |
1da177e4c
|
925 926 927 928 929 |
case SIOCADDDLCI: case SIOCDELDLCI: err = -ENOPKG; if (!dlci_ioctl_hook) request_module("dlci"); |
7512cbf6e
|
930 931 |
mutex_lock(&dlci_ioctl_mutex); if (dlci_ioctl_hook) |
1da177e4c
|
932 |
err = dlci_ioctl_hook(cmd, argp); |
7512cbf6e
|
933 |
mutex_unlock(&dlci_ioctl_mutex); |
1da177e4c
|
934 935 |
break; default: |
6b96018b2
|
936 |
err = sock_do_ioctl(net, sock, cmd, arg); |
1da177e4c
|
937 |
break; |
89bddce58
|
938 |
} |
1da177e4c
|
939 940 941 942 943 944 945 |
return err; } int sock_create_lite(int family, int type, int protocol, struct socket **res) { int err; struct socket *sock = NULL; |
89bddce58
|
946 |
|
1da177e4c
|
947 948 949 950 951 952 953 954 955 |
err = security_socket_create(family, type, protocol, 1); if (err) goto out; sock = sock_alloc(); if (!sock) { err = -ENOMEM; goto out; } |
1da177e4c
|
956 |
sock->type = type; |
7420ed23a
|
957 958 959 |
err = security_socket_post_create(sock, family, type, protocol, 1); if (err) goto out_release; |
1da177e4c
|
960 961 962 |
out: *res = sock; return err; |
7420ed23a
|
963 964 965 966 |
out_release: sock_release(sock); sock = NULL; goto out; |
1da177e4c
|
967 968 969 |
} /* No kernel lock held - perfect */ |
89bddce58
|
970 |
static unsigned int sock_poll(struct file *file, poll_table *wait) |
1da177e4c
|
971 972 973 974 |
{ struct socket *sock; /* |
89bddce58
|
975 |
* We can't return errors to poll, so it's either yes or no. |
1da177e4c
|
976 |
*/ |
b69aee04f
|
977 |
sock = file->private_data; |
1da177e4c
|
978 979 |
return sock->ops->poll(file, sock, wait); } |
89bddce58
|
980 |
static int sock_mmap(struct file *file, struct vm_area_struct *vma) |
1da177e4c
|
981 |
{ |
b69aee04f
|
982 |
struct socket *sock = file->private_data; |
1da177e4c
|
983 984 985 |
return sock->ops->mmap(file, sock, vma); } |
20380731b
|
986 |
static int sock_close(struct inode *inode, struct file *filp) |
1da177e4c
|
987 988 |
{ /* |
89bddce58
|
989 990 |
* It was possible the inode is NULL we were * closing an unfinished socket. |
1da177e4c
|
991 |
*/ |
89bddce58
|
992 |
if (!inode) { |
1da177e4c
|
993 994 995 996 |
printk(KERN_DEBUG "sock_close: NULL inode "); return 0; } |
1da177e4c
|
997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 |
sock_release(SOCKET_I(inode)); return 0; } /* * Update the socket async list * * Fasync_list locking strategy. * * 1. fasync_list is modified only under process context socket lock * i.e. under semaphore. * 2. fasync_list is used under read_lock(&sk->sk_callback_lock) * or under socket lock. * 3. fasync_list can be used from softirq context, so that * modification under socket lock have to be enhanced with * write_lock_bh(&sk->sk_callback_lock). * --ANK (990710) */ static int sock_fasync(int fd, struct file *filp, int on) { |
89bddce58
|
1018 |
struct fasync_struct *fa, *fna = NULL, **prev; |
1da177e4c
|
1019 1020 |
struct socket *sock; struct sock *sk; |
89bddce58
|
1021 |
if (on) { |
8b3a70058
|
1022 |
fna = kmalloc(sizeof(struct fasync_struct), GFP_KERNEL); |
89bddce58
|
1023 |
if (fna == NULL) |
1da177e4c
|
1024 1025 |
return -ENOMEM; } |
b69aee04f
|
1026 |
sock = filp->private_data; |
1da177e4c
|
1027 |
|
89bddce58
|
1028 1029 |
sk = sock->sk; if (sk == NULL) { |
1da177e4c
|
1030 1031 1032 1033 1034 |
kfree(fna); return -EINVAL; } lock_sock(sk); |
76398425b
|
1035 1036 1037 1038 1039 1040 |
spin_lock(&filp->f_lock); if (on) filp->f_flags |= FASYNC; else filp->f_flags &= ~FASYNC; spin_unlock(&filp->f_lock); |
89bddce58
|
1041 |
prev = &(sock->fasync_list); |
1da177e4c
|
1042 |
|
89bddce58
|
1043 1044 |
for (fa = *prev; fa != NULL; prev = &fa->fa_next, fa = *prev) if (fa->fa_file == filp) |
1da177e4c
|
1045 |
break; |
89bddce58
|
1046 1047 |
if (on) { if (fa != NULL) { |
1da177e4c
|
1048 |
write_lock_bh(&sk->sk_callback_lock); |
89bddce58
|
1049 |
fa->fa_fd = fd; |
1da177e4c
|
1050 1051 1052 1053 1054 |
write_unlock_bh(&sk->sk_callback_lock); kfree(fna); goto out; } |
89bddce58
|
1055 1056 1057 1058 |
fna->fa_file = filp; fna->fa_fd = fd; fna->magic = FASYNC_MAGIC; fna->fa_next = sock->fasync_list; |
1da177e4c
|
1059 |
write_lock_bh(&sk->sk_callback_lock); |
89bddce58
|
1060 |
sock->fasync_list = fna; |
bcdce7195
|
1061 |
sock_set_flag(sk, SOCK_FASYNC); |
1da177e4c
|
1062 |
write_unlock_bh(&sk->sk_callback_lock); |
89bddce58
|
1063 1064 |
} else { if (fa != NULL) { |
1da177e4c
|
1065 |
write_lock_bh(&sk->sk_callback_lock); |
89bddce58
|
1066 |
*prev = fa->fa_next; |
bcdce7195
|
1067 1068 |
if (!sock->fasync_list) sock_reset_flag(sk, SOCK_FASYNC); |
1da177e4c
|
1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 |
write_unlock_bh(&sk->sk_callback_lock); kfree(fa); } } out: release_sock(sock->sk); return 0; } /* This function may be called only under socket lock or callback_lock */ int sock_wake_async(struct socket *sock, int how, int band) { if (!sock || !sock->fasync_list) return -1; |
89bddce58
|
1085 |
switch (how) { |
8d8ad9d7c
|
1086 |
case SOCK_WAKE_WAITD: |
1da177e4c
|
1087 1088 1089 |
if (test_bit(SOCK_ASYNC_WAITDATA, &sock->flags)) break; goto call_kill; |
8d8ad9d7c
|
1090 |
case SOCK_WAKE_SPACE: |
1da177e4c
|
1091 1092 1093 |
if (!test_and_clear_bit(SOCK_ASYNC_NOSPACE, &sock->flags)) break; /* fall through */ |
8d8ad9d7c
|
1094 |
case SOCK_WAKE_IO: |
89bddce58
|
1095 |
call_kill: |
1da177e4c
|
1096 1097 |
__kill_fasync(sock->fasync_list, SIGIO, band); break; |
8d8ad9d7c
|
1098 |
case SOCK_WAKE_URG: |
1da177e4c
|
1099 1100 1101 1102 |
__kill_fasync(sock->fasync_list, SIGURG, band); } return 0; } |
1b8d7ae42
|
1103 |
static int __sock_create(struct net *net, int family, int type, int protocol, |
89bddce58
|
1104 |
struct socket **res, int kern) |
1da177e4c
|
1105 1106 1107 |
{ int err; struct socket *sock; |
55737fda0
|
1108 |
const struct net_proto_family *pf; |
1da177e4c
|
1109 1110 |
/* |
89bddce58
|
1111 |
* Check protocol is in range |
1da177e4c
|
1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 |
*/ if (family < 0 || family >= NPROTO) return -EAFNOSUPPORT; if (type < 0 || type >= SOCK_MAX) return -EINVAL; /* Compatibility. This uglymoron is moved from INET layer to here to avoid deadlock in module load. */ if (family == PF_INET && type == SOCK_PACKET) { |
89bddce58
|
1124 |
static int warned; |
1da177e4c
|
1125 1126 |
if (!warned) { warned = 1; |
89bddce58
|
1127 1128 1129 |
printk(KERN_INFO "%s uses obsolete (PF_INET,SOCK_PACKET) ", current->comm); |
1da177e4c
|
1130 1131 1132 1133 1134 1135 1136 |
} family = PF_PACKET; } err = security_socket_create(family, type, protocol, kern); if (err) return err; |
89bddce58
|
1137 |
|
55737fda0
|
1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 |
/* * Allocate the socket and allow the family to set things up. if * the protocol is 0, the family is instructed to select an appropriate * default. */ sock = sock_alloc(); if (!sock) { if (net_ratelimit()) printk(KERN_WARNING "socket: no more sockets "); return -ENFILE; /* Not exactly a match, but its the closest posix thing */ } sock->type = type; |
95a5afca4
|
1153 |
#ifdef CONFIG_MODULES |
89bddce58
|
1154 1155 1156 |
/* Attempt to load a protocol module if the find failed. * * 12/09/1996 Marcin: But! this makes REALLY only sense, if the user |
1da177e4c
|
1157 1158 1159 |
* requested real, full-featured networking support upon configuration. * Otherwise module support will break! */ |
55737fda0
|
1160 |
if (net_families[family] == NULL) |
89bddce58
|
1161 |
request_module("net-pf-%d", family); |
1da177e4c
|
1162 |
#endif |
55737fda0
|
1163 1164 1165 1166 1167 |
rcu_read_lock(); pf = rcu_dereference(net_families[family]); err = -EAFNOSUPPORT; if (!pf) goto out_release; |
1da177e4c
|
1168 1169 1170 1171 1172 |
/* * We will call the ->create function, that possibly is in a loadable * module, so we have to bump that loadable module refcnt first. */ |
55737fda0
|
1173 |
if (!try_module_get(pf->owner)) |
1da177e4c
|
1174 |
goto out_release; |
55737fda0
|
1175 1176 |
/* Now protected by module ref count */ rcu_read_unlock(); |
3f378b684
|
1177 |
err = pf->create(net, sock, protocol, kern); |
55737fda0
|
1178 |
if (err < 0) |
1da177e4c
|
1179 |
goto out_module_put; |
a79af59ef
|
1180 |
|
1da177e4c
|
1181 1182 1183 1184 |
/* * Now to bump the refcnt of the [loadable] module that owns this * socket at sock_release time we decrement its refcnt. */ |
55737fda0
|
1185 1186 |
if (!try_module_get(sock->ops->owner)) goto out_module_busy; |
1da177e4c
|
1187 1188 1189 1190 |
/* * Now that we're done with the ->create function, the [loadable] * module can have its refcnt decremented */ |
55737fda0
|
1191 |
module_put(pf->owner); |
7420ed23a
|
1192 1193 |
err = security_socket_post_create(sock, family, type, protocol, kern); if (err) |
3b1855255
|
1194 |
goto out_sock_release; |
55737fda0
|
1195 |
*res = sock; |
1da177e4c
|
1196 |
|
55737fda0
|
1197 1198 1199 1200 |
return 0; out_module_busy: err = -EAFNOSUPPORT; |
1da177e4c
|
1201 |
out_module_put: |
55737fda0
|
1202 1203 1204 |
sock->ops = NULL; module_put(pf->owner); out_sock_release: |
1da177e4c
|
1205 |
sock_release(sock); |
55737fda0
|
1206 1207 1208 1209 1210 |
return err; out_release: rcu_read_unlock(); goto out_sock_release; |
1da177e4c
|
1211 1212 1213 1214 |
} int sock_create(int family, int type, int protocol, struct socket **res) { |
1b8d7ae42
|
1215 |
return __sock_create(current->nsproxy->net_ns, family, type, protocol, res, 0); |
1da177e4c
|
1216 1217 1218 1219 |
} int sock_create_kern(int family, int type, int protocol, struct socket **res) { |
1b8d7ae42
|
1220 |
return __sock_create(&init_net, family, type, protocol, res, 1); |
1da177e4c
|
1221 |
} |
3e0fa65f8
|
1222 |
SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol) |
1da177e4c
|
1223 1224 1225 |
{ int retval; struct socket *sock; |
a677a039b
|
1226 |
int flags; |
e38b36f32
|
1227 1228 1229 1230 1231 |
/* Check the SOCK_* constants for consistency. */ BUILD_BUG_ON(SOCK_CLOEXEC != O_CLOEXEC); BUILD_BUG_ON((SOCK_MAX | SOCK_TYPE_MASK) != SOCK_TYPE_MASK); BUILD_BUG_ON(SOCK_CLOEXEC & SOCK_TYPE_MASK); BUILD_BUG_ON(SOCK_NONBLOCK & SOCK_TYPE_MASK); |
a677a039b
|
1232 |
flags = type & ~SOCK_TYPE_MASK; |
77d272005
|
1233 |
if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) |
a677a039b
|
1234 1235 |
return -EINVAL; type &= SOCK_TYPE_MASK; |
1da177e4c
|
1236 |
|
aaca0bdca
|
1237 1238 |
if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK)) flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK; |
1da177e4c
|
1239 1240 1241 |
retval = sock_create(family, type, protocol, &sock); if (retval < 0) goto out; |
77d272005
|
1242 |
retval = sock_map_fd(sock, flags & (O_CLOEXEC | O_NONBLOCK)); |
1da177e4c
|
1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 |
if (retval < 0) goto out_release; out: /* It may be already another descriptor 8) Not kernel problem. */ return retval; out_release: sock_release(sock); return retval; } /* * Create a pair of connected sockets. */ |
3e0fa65f8
|
1258 1259 |
SYSCALL_DEFINE4(socketpair, int, family, int, type, int, protocol, int __user *, usockvec) |
1da177e4c
|
1260 1261 1262 |
{ struct socket *sock1, *sock2; int fd1, fd2, err; |
db3495099
|
1263 |
struct file *newfile1, *newfile2; |
a677a039b
|
1264 1265 1266 |
int flags; flags = type & ~SOCK_TYPE_MASK; |
77d272005
|
1267 |
if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) |
a677a039b
|
1268 1269 |
return -EINVAL; type &= SOCK_TYPE_MASK; |
1da177e4c
|
1270 |
|
aaca0bdca
|
1271 1272 |
if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK)) flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK; |
1da177e4c
|
1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 |
/* * Obtain the first socket and check if the underlying protocol * supports the socketpair call. */ err = sock_create(family, type, protocol, &sock1); if (err < 0) goto out; err = sock_create(family, type, protocol, &sock2); if (err < 0) goto out_release_1; err = sock1->ops->socketpair(sock1, sock2); |
89bddce58
|
1287 |
if (err < 0) |
1da177e4c
|
1288 |
goto out_release_both; |
7cbe66b6b
|
1289 |
fd1 = sock_alloc_file(sock1, &newfile1, flags); |
bf3c23d17
|
1290 1291 |
if (unlikely(fd1 < 0)) { err = fd1; |
db3495099
|
1292 |
goto out_release_both; |
bf3c23d17
|
1293 |
} |
1da177e4c
|
1294 |
|
7cbe66b6b
|
1295 |
fd2 = sock_alloc_file(sock2, &newfile2, flags); |
198de4d7a
|
1296 1297 1298 1299 1300 1301 |
if (unlikely(fd2 < 0)) { err = fd2; fput(newfile1); put_unused_fd(fd1); sock_release(sock2); goto out; |
db3495099
|
1302 |
} |
157cf649a
|
1303 |
audit_fd_pair(fd1, fd2); |
db3495099
|
1304 1305 |
fd_install(fd1, newfile1); fd_install(fd2, newfile2); |
1da177e4c
|
1306 1307 1308 |
/* fd1 and fd2 may be already another descriptors. * Not kernel problem. */ |
89bddce58
|
1309 |
err = put_user(fd1, &usockvec[0]); |
1da177e4c
|
1310 1311 1312 1313 1314 1315 1316 1317 |
if (!err) err = put_user(fd2, &usockvec[1]); if (!err) return 0; sys_close(fd2); sys_close(fd1); return err; |
1da177e4c
|
1318 |
out_release_both: |
89bddce58
|
1319 |
sock_release(sock2); |
1da177e4c
|
1320 |
out_release_1: |
89bddce58
|
1321 |
sock_release(sock1); |
1da177e4c
|
1322 1323 1324 |
out: return err; } |
1da177e4c
|
1325 1326 1327 1328 1329 1330 1331 |
/* * Bind a name to a socket. Nothing much to do here since it's * the protocol's responsibility to handle the local address. * * We move the socket address to kernel space before we call * the protocol layer (having also checked the address is ok). */ |
20f37034f
|
1332 |
SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen) |
1da177e4c
|
1333 1334 |
{ struct socket *sock; |
230b18392
|
1335 |
struct sockaddr_storage address; |
6cb153cab
|
1336 |
int err, fput_needed; |
1da177e4c
|
1337 |
|
89bddce58
|
1338 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
e71a4783a
|
1339 |
if (sock) { |
230b18392
|
1340 |
err = move_addr_to_kernel(umyaddr, addrlen, (struct sockaddr *)&address); |
89bddce58
|
1341 1342 |
if (err >= 0) { err = security_socket_bind(sock, |
230b18392
|
1343 |
(struct sockaddr *)&address, |
89bddce58
|
1344 |
addrlen); |
6cb153cab
|
1345 1346 |
if (!err) err = sock->ops->bind(sock, |
89bddce58
|
1347 |
(struct sockaddr *) |
230b18392
|
1348 |
&address, addrlen); |
1da177e4c
|
1349 |
} |
6cb153cab
|
1350 |
fput_light(sock->file, fput_needed); |
89bddce58
|
1351 |
} |
1da177e4c
|
1352 1353 |
return err; } |
1da177e4c
|
1354 1355 1356 1357 1358 |
/* * Perform a listen. Basically, we allow the protocol to do anything * necessary for a listen, and if that works, we mark the socket as * ready for listening. */ |
3e0fa65f8
|
1359 |
SYSCALL_DEFINE2(listen, int, fd, int, backlog) |
1da177e4c
|
1360 1361 |
{ struct socket *sock; |
6cb153cab
|
1362 |
int err, fput_needed; |
b8e1f9b5c
|
1363 |
int somaxconn; |
89bddce58
|
1364 1365 1366 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock) { |
8efa6e93c
|
1367 |
somaxconn = sock_net(sock->sk)->core.sysctl_somaxconn; |
b8e1f9b5c
|
1368 1369 |
if ((unsigned)backlog > somaxconn) backlog = somaxconn; |
1da177e4c
|
1370 1371 |
err = security_socket_listen(sock, backlog); |
6cb153cab
|
1372 1373 |
if (!err) err = sock->ops->listen(sock, backlog); |
1da177e4c
|
1374 |
|
6cb153cab
|
1375 |
fput_light(sock->file, fput_needed); |
1da177e4c
|
1376 1377 1378 |
} return err; } |
1da177e4c
|
1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 |
/* * For accept, we attempt to create a new socket, set up the link * with the client, wake up the client, then return the new * connected fd. We collect the address of the connector in kernel * space and move it to user at the very end. This is unclean because * we open the socket then return an error. * * 1003.1g adds the ability to recvmsg() to query connection pending * status to recvmsg. We need to add that support in a way thats * clean when we restucture accept also. */ |
20f37034f
|
1390 1391 |
SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr, int __user *, upeer_addrlen, int, flags) |
1da177e4c
|
1392 1393 |
{ struct socket *sock, *newsock; |
39d8c1b6f
|
1394 |
struct file *newfile; |
6cb153cab
|
1395 |
int err, len, newfd, fput_needed; |
230b18392
|
1396 |
struct sockaddr_storage address; |
1da177e4c
|
1397 |
|
77d272005
|
1398 |
if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) |
aaca0bdca
|
1399 1400 1401 1402 |
return -EINVAL; if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK)) flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK; |
6cb153cab
|
1403 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4c
|
1404 1405 1406 1407 |
if (!sock) goto out; err = -ENFILE; |
89bddce58
|
1408 |
if (!(newsock = sock_alloc())) |
1da177e4c
|
1409 1410 1411 1412 |
goto out_put; newsock->type = sock->type; newsock->ops = sock->ops; |
1da177e4c
|
1413 1414 1415 1416 1417 |
/* * 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); |
7cbe66b6b
|
1418 |
newfd = sock_alloc_file(newsock, &newfile, flags); |
39d8c1b6f
|
1419 1420 |
if (unlikely(newfd < 0)) { err = newfd; |
9a1875e60
|
1421 1422 |
sock_release(newsock); goto out_put; |
39d8c1b6f
|
1423 |
} |
a79af59ef
|
1424 1425 |
err = security_socket_accept(sock, newsock); if (err) |
39d8c1b6f
|
1426 |
goto out_fd; |
a79af59ef
|
1427 |
|
1da177e4c
|
1428 1429 |
err = sock->ops->accept(sock, newsock, sock->file->f_flags); if (err < 0) |
39d8c1b6f
|
1430 |
goto out_fd; |
1da177e4c
|
1431 1432 |
if (upeer_sockaddr) { |
230b18392
|
1433 |
if (newsock->ops->getname(newsock, (struct sockaddr *)&address, |
89bddce58
|
1434 |
&len, 2) < 0) { |
1da177e4c
|
1435 |
err = -ECONNABORTED; |
39d8c1b6f
|
1436 |
goto out_fd; |
1da177e4c
|
1437 |
} |
230b18392
|
1438 1439 |
err = move_addr_to_user((struct sockaddr *)&address, len, upeer_sockaddr, upeer_addrlen); |
1da177e4c
|
1440 |
if (err < 0) |
39d8c1b6f
|
1441 |
goto out_fd; |
1da177e4c
|
1442 1443 1444 |
} /* File flags are not inherited via accept() unlike another OSes. */ |
39d8c1b6f
|
1445 1446 |
fd_install(newfd, newfile); err = newfd; |
1da177e4c
|
1447 |
|
1da177e4c
|
1448 |
out_put: |
6cb153cab
|
1449 |
fput_light(sock->file, fput_needed); |
1da177e4c
|
1450 1451 |
out: return err; |
39d8c1b6f
|
1452 |
out_fd: |
9606a2163
|
1453 |
fput(newfile); |
39d8c1b6f
|
1454 |
put_unused_fd(newfd); |
1da177e4c
|
1455 1456 |
goto out_put; } |
20f37034f
|
1457 1458 |
SYSCALL_DEFINE3(accept, int, fd, struct sockaddr __user *, upeer_sockaddr, int __user *, upeer_addrlen) |
aaca0bdca
|
1459 |
{ |
de11defeb
|
1460 |
return sys_accept4(fd, upeer_sockaddr, upeer_addrlen, 0); |
aaca0bdca
|
1461 |
} |
1da177e4c
|
1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 |
/* * 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. * * For 1003.1g we need to add clean support for a bind to AF_UNSPEC to * break bindings * * NOTE: 1003.1g draft 6.3 is broken with respect to AX.25/NetROM and * other SEQPACKET protocols that take time to connect() as it doesn't * include the -EINPROGRESS status for such sockets. */ |
20f37034f
|
1473 1474 |
SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr, int, addrlen) |
1da177e4c
|
1475 1476 |
{ struct socket *sock; |
230b18392
|
1477 |
struct sockaddr_storage address; |
6cb153cab
|
1478 |
int err, fput_needed; |
1da177e4c
|
1479 |
|
6cb153cab
|
1480 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4c
|
1481 1482 |
if (!sock) goto out; |
230b18392
|
1483 |
err = move_addr_to_kernel(uservaddr, addrlen, (struct sockaddr *)&address); |
1da177e4c
|
1484 1485 |
if (err < 0) goto out_put; |
89bddce58
|
1486 |
err = |
230b18392
|
1487 |
security_socket_connect(sock, (struct sockaddr *)&address, addrlen); |
1da177e4c
|
1488 1489 |
if (err) goto out_put; |
230b18392
|
1490 |
err = sock->ops->connect(sock, (struct sockaddr *)&address, addrlen, |
1da177e4c
|
1491 1492 |
sock->file->f_flags); out_put: |
6cb153cab
|
1493 |
fput_light(sock->file, fput_needed); |
1da177e4c
|
1494 1495 1496 1497 1498 1499 1500 1501 |
out: return err; } /* * Get the local address ('name') of a socket object. Move the obtained * name to user space. */ |
20f37034f
|
1502 1503 |
SYSCALL_DEFINE3(getsockname, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len) |
1da177e4c
|
1504 1505 |
{ struct socket *sock; |
230b18392
|
1506 |
struct sockaddr_storage address; |
6cb153cab
|
1507 |
int len, err, fput_needed; |
89bddce58
|
1508 |
|
6cb153cab
|
1509 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4c
|
1510 1511 1512 1513 1514 1515 |
if (!sock) goto out; err = security_socket_getsockname(sock); if (err) goto out_put; |
230b18392
|
1516 |
err = sock->ops->getname(sock, (struct sockaddr *)&address, &len, 0); |
1da177e4c
|
1517 1518 |
if (err) goto out_put; |
230b18392
|
1519 |
err = move_addr_to_user((struct sockaddr *)&address, len, usockaddr, usockaddr_len); |
1da177e4c
|
1520 1521 |
out_put: |
6cb153cab
|
1522 |
fput_light(sock->file, fput_needed); |
1da177e4c
|
1523 1524 1525 1526 1527 1528 1529 1530 |
out: return err; } /* * Get the remote address ('name') of a socket object. Move the obtained * name to user space. */ |
20f37034f
|
1531 1532 |
SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len) |
1da177e4c
|
1533 1534 |
{ struct socket *sock; |
230b18392
|
1535 |
struct sockaddr_storage address; |
6cb153cab
|
1536 |
int len, err, fput_needed; |
1da177e4c
|
1537 |
|
89bddce58
|
1538 1539 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock != NULL) { |
1da177e4c
|
1540 1541 |
err = security_socket_getpeername(sock); if (err) { |
6cb153cab
|
1542 |
fput_light(sock->file, fput_needed); |
1da177e4c
|
1543 1544 |
return err; } |
89bddce58
|
1545 |
err = |
230b18392
|
1546 |
sock->ops->getname(sock, (struct sockaddr *)&address, &len, |
89bddce58
|
1547 |
1); |
1da177e4c
|
1548 |
if (!err) |
230b18392
|
1549 |
err = move_addr_to_user((struct sockaddr *)&address, len, usockaddr, |
89bddce58
|
1550 |
usockaddr_len); |
6cb153cab
|
1551 |
fput_light(sock->file, fput_needed); |
1da177e4c
|
1552 1553 1554 1555 1556 1557 1558 1559 1560 |
} return err; } /* * Send a datagram to a given address. We move the address into kernel * space and check the user space data area is readable before invoking * the protocol. */ |
3e0fa65f8
|
1561 1562 1563 |
SYSCALL_DEFINE6(sendto, int, fd, void __user *, buff, size_t, len, unsigned, flags, struct sockaddr __user *, addr, int, addr_len) |
1da177e4c
|
1564 1565 |
{ struct socket *sock; |
230b18392
|
1566 |
struct sockaddr_storage address; |
1da177e4c
|
1567 1568 1569 |
int err; struct msghdr msg; struct iovec iov; |
6cb153cab
|
1570 |
int fput_needed; |
6cb153cab
|
1571 |
|
de0fa95c1
|
1572 1573 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) |
4387ff75f
|
1574 |
goto out; |
6cb153cab
|
1575 |
|
89bddce58
|
1576 1577 1578 1579 1580 1581 1582 1583 |
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; |
6cb153cab
|
1584 |
if (addr) { |
230b18392
|
1585 |
err = move_addr_to_kernel(addr, addr_len, (struct sockaddr *)&address); |
1da177e4c
|
1586 1587 |
if (err < 0) goto out_put; |
230b18392
|
1588 |
msg.msg_name = (struct sockaddr *)&address; |
89bddce58
|
1589 |
msg.msg_namelen = addr_len; |
1da177e4c
|
1590 1591 1592 1593 1594 |
} if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; msg.msg_flags = flags; err = sock_sendmsg(sock, &msg, len); |
89bddce58
|
1595 |
out_put: |
de0fa95c1
|
1596 |
fput_light(sock->file, fput_needed); |
4387ff75f
|
1597 |
out: |
1da177e4c
|
1598 1599 1600 1601 |
return err; } /* |
89bddce58
|
1602 |
* Send a datagram down a socket. |
1da177e4c
|
1603 |
*/ |
3e0fa65f8
|
1604 1605 |
SYSCALL_DEFINE4(send, int, fd, void __user *, buff, size_t, len, unsigned, flags) |
1da177e4c
|
1606 1607 1608 1609 1610 |
{ return sys_sendto(fd, buff, len, flags, NULL, 0); } /* |
89bddce58
|
1611 |
* Receive a frame from the socket and optionally record the address of the |
1da177e4c
|
1612 1613 1614 |
* sender. We verify the buffers are writable and if needed move the * sender address from kernel to user space. */ |
3e0fa65f8
|
1615 1616 1617 |
SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size, unsigned, flags, struct sockaddr __user *, addr, int __user *, addr_len) |
1da177e4c
|
1618 1619 1620 1621 |
{ struct socket *sock; struct iovec iov; struct msghdr msg; |
230b18392
|
1622 |
struct sockaddr_storage address; |
89bddce58
|
1623 |
int err, err2; |
6cb153cab
|
1624 |
int fput_needed; |
de0fa95c1
|
1625 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4c
|
1626 |
if (!sock) |
de0fa95c1
|
1627 |
goto out; |
1da177e4c
|
1628 |
|
89bddce58
|
1629 1630 1631 1632 1633 1634 |
msg.msg_control = NULL; msg.msg_controllen = 0; msg.msg_iovlen = 1; msg.msg_iov = &iov; iov.iov_len = size; iov.iov_base = ubuf; |
230b18392
|
1635 1636 |
msg.msg_name = (struct sockaddr *)&address; msg.msg_namelen = sizeof(address); |
1da177e4c
|
1637 1638 |
if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; |
89bddce58
|
1639 |
err = sock_recvmsg(sock, &msg, size, flags); |
1da177e4c
|
1640 |
|
89bddce58
|
1641 |
if (err >= 0 && addr != NULL) { |
230b18392
|
1642 1643 |
err2 = move_addr_to_user((struct sockaddr *)&address, msg.msg_namelen, addr, addr_len); |
89bddce58
|
1644 1645 |
if (err2 < 0) err = err2; |
1da177e4c
|
1646 |
} |
de0fa95c1
|
1647 1648 |
fput_light(sock->file, fput_needed); |
4387ff75f
|
1649 |
out: |
1da177e4c
|
1650 1651 1652 1653 |
return err; } /* |
89bddce58
|
1654 |
* Receive a datagram from a socket. |
1da177e4c
|
1655 |
*/ |
89bddce58
|
1656 1657 |
asmlinkage long sys_recv(int fd, void __user *ubuf, size_t size, unsigned flags) |
1da177e4c
|
1658 1659 1660 1661 1662 1663 1664 1665 |
{ return sys_recvfrom(fd, ubuf, size, flags, NULL, NULL); } /* * Set a socket option. Because we don't know the option lengths we have * to pass the user mode parameter for the protocols to sort out. */ |
20f37034f
|
1666 1667 |
SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname, char __user *, optval, int, optlen) |
1da177e4c
|
1668 |
{ |
6cb153cab
|
1669 |
int err, fput_needed; |
1da177e4c
|
1670 1671 1672 1673 |
struct socket *sock; if (optlen < 0) return -EINVAL; |
89bddce58
|
1674 1675 1676 1677 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock != NULL) { err = security_socket_setsockopt(sock, level, optname); |
6cb153cab
|
1678 1679 |
if (err) goto out_put; |
1da177e4c
|
1680 1681 |
if (level == SOL_SOCKET) |
89bddce58
|
1682 1683 1684 |
err = sock_setsockopt(sock, level, optname, optval, optlen); |
1da177e4c
|
1685 |
else |
89bddce58
|
1686 1687 1688 |
err = sock->ops->setsockopt(sock, level, optname, optval, optlen); |
6cb153cab
|
1689 1690 |
out_put: fput_light(sock->file, fput_needed); |
1da177e4c
|
1691 1692 1693 1694 1695 1696 1697 1698 |
} return err; } /* * Get a socket option. Because we don't know the option lengths we have * to pass a user mode parameter for the protocols to sort out. */ |
20f37034f
|
1699 1700 |
SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname, char __user *, optval, int __user *, optlen) |
1da177e4c
|
1701 |
{ |
6cb153cab
|
1702 |
int err, fput_needed; |
1da177e4c
|
1703 |
struct socket *sock; |
89bddce58
|
1704 1705 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock != NULL) { |
6cb153cab
|
1706 1707 1708 |
err = security_socket_getsockopt(sock, level, optname); if (err) goto out_put; |
1da177e4c
|
1709 1710 |
if (level == SOL_SOCKET) |
89bddce58
|
1711 1712 1713 |
err = sock_getsockopt(sock, level, optname, optval, optlen); |
1da177e4c
|
1714 |
else |
89bddce58
|
1715 1716 1717 |
err = sock->ops->getsockopt(sock, level, optname, optval, optlen); |
6cb153cab
|
1718 1719 |
out_put: fput_light(sock->file, fput_needed); |
1da177e4c
|
1720 1721 1722 |
} return err; } |
1da177e4c
|
1723 1724 1725 |
/* * Shutdown a socket. */ |
754fe8d29
|
1726 |
SYSCALL_DEFINE2(shutdown, int, fd, int, how) |
1da177e4c
|
1727 |
{ |
6cb153cab
|
1728 |
int err, fput_needed; |
1da177e4c
|
1729 |
struct socket *sock; |
89bddce58
|
1730 1731 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock != NULL) { |
1da177e4c
|
1732 |
err = security_socket_shutdown(sock, how); |
6cb153cab
|
1733 1734 1735 |
if (!err) err = sock->ops->shutdown(sock, how); fput_light(sock->file, fput_needed); |
1da177e4c
|
1736 1737 1738 |
} return err; } |
89bddce58
|
1739 |
/* A couple of helpful macros for getting the address of the 32/64 bit |
1da177e4c
|
1740 1741 1742 1743 1744 |
* 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) |
1da177e4c
|
1745 1746 1747 |
/* * BSD sendmsg interface */ |
3e0fa65f8
|
1748 |
SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned, flags) |
1da177e4c
|
1749 |
{ |
89bddce58
|
1750 1751 |
struct compat_msghdr __user *msg_compat = (struct compat_msghdr __user *)msg; |
1da177e4c
|
1752 |
struct socket *sock; |
230b18392
|
1753 |
struct sockaddr_storage address; |
1da177e4c
|
1754 |
struct iovec iovstack[UIO_FASTIOV], *iov = iovstack; |
b9d717a7b
|
1755 |
unsigned char ctl[sizeof(struct cmsghdr) + 20] |
89bddce58
|
1756 1757 |
__attribute__ ((aligned(sizeof(__kernel_size_t)))); /* 20 is size of ipv6_pktinfo */ |
1da177e4c
|
1758 1759 1760 |
unsigned char *ctl_buf = ctl; struct msghdr msg_sys; int err, ctl_len, iov_size, total_len; |
6cb153cab
|
1761 |
int fput_needed; |
89bddce58
|
1762 |
|
1da177e4c
|
1763 1764 1765 1766 |
err = -EFAULT; if (MSG_CMSG_COMPAT & flags) { if (get_compat_msghdr(&msg_sys, msg_compat)) return -EFAULT; |
89bddce58
|
1767 1768 |
} else if (copy_from_user(&msg_sys, msg, sizeof(struct msghdr))) |
1da177e4c
|
1769 |
return -EFAULT; |
6cb153cab
|
1770 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
89bddce58
|
1771 |
if (!sock) |
1da177e4c
|
1772 1773 1774 1775 1776 1777 |
goto out; /* do not move before msg_sys is valid */ err = -EMSGSIZE; if (msg_sys.msg_iovlen > UIO_MAXIOV) goto out_put; |
89bddce58
|
1778 |
/* Check whether to allocate the iovec area */ |
1da177e4c
|
1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 |
err = -ENOMEM; iov_size = msg_sys.msg_iovlen * sizeof(struct iovec); if (msg_sys.msg_iovlen > UIO_FASTIOV) { iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL); if (!iov) goto out_put; } /* This will also move the address data into kernel space */ if (MSG_CMSG_COMPAT & flags) { |
230b18392
|
1789 1790 1791 |
err = verify_compat_iovec(&msg_sys, iov, (struct sockaddr *)&address, VERIFY_READ); |
1da177e4c
|
1792 |
} else |
230b18392
|
1793 1794 1795 |
err = verify_iovec(&msg_sys, iov, (struct sockaddr *)&address, VERIFY_READ); |
89bddce58
|
1796 |
if (err < 0) |
1da177e4c
|
1797 1798 1799 1800 1801 1802 1803 |
goto out_freeiov; total_len = err; err = -ENOBUFS; if (msg_sys.msg_controllen > INT_MAX) goto out_freeiov; |
89bddce58
|
1804 |
ctl_len = msg_sys.msg_controllen; |
1da177e4c
|
1805 |
if ((MSG_CMSG_COMPAT & flags) && ctl_len) { |
89bddce58
|
1806 1807 1808 |
err = cmsghdr_from_user_compat_to_kern(&msg_sys, sock->sk, ctl, sizeof(ctl)); |
1da177e4c
|
1809 1810 1811 |
if (err) goto out_freeiov; ctl_buf = msg_sys.msg_control; |
8920e8f94
|
1812 |
ctl_len = msg_sys.msg_controllen; |
1da177e4c
|
1813 |
} else if (ctl_len) { |
89bddce58
|
1814 |
if (ctl_len > sizeof(ctl)) { |
1da177e4c
|
1815 |
ctl_buf = sock_kmalloc(sock->sk, ctl_len, GFP_KERNEL); |
89bddce58
|
1816 |
if (ctl_buf == NULL) |
1da177e4c
|
1817 1818 1819 1820 1821 1822 1823 1824 |
goto out_freeiov; } err = -EFAULT; /* * Careful! Before this, msg_sys.msg_control contains a user pointer. * Afterwards, it will be a kernel pointer. Thus the compiler-assisted * checking falls down on this. */ |
89bddce58
|
1825 1826 |
if (copy_from_user(ctl_buf, (void __user *)msg_sys.msg_control, ctl_len)) |
1da177e4c
|
1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 |
goto out_freectl; msg_sys.msg_control = ctl_buf; } msg_sys.msg_flags = flags; if (sock->file->f_flags & O_NONBLOCK) msg_sys.msg_flags |= MSG_DONTWAIT; err = sock_sendmsg(sock, &msg_sys, total_len); out_freectl: |
89bddce58
|
1837 |
if (ctl_buf != ctl) |
1da177e4c
|
1838 1839 1840 1841 1842 |
sock_kfree_s(sock->sk, ctl_buf, ctl_len); out_freeiov: if (iov != iovstack) sock_kfree_s(sock->sk, iov, iov_size); out_put: |
6cb153cab
|
1843 |
fput_light(sock->file, fput_needed); |
89bddce58
|
1844 |
out: |
1da177e4c
|
1845 1846 |
return err; } |
a2e272554
|
1847 1848 |
static int __sys_recvmsg(struct socket *sock, struct msghdr __user *msg, struct msghdr *msg_sys, unsigned flags, int nosec) |
1da177e4c
|
1849 |
{ |
89bddce58
|
1850 1851 |
struct compat_msghdr __user *msg_compat = (struct compat_msghdr __user *)msg; |
1da177e4c
|
1852 |
struct iovec iovstack[UIO_FASTIOV]; |
89bddce58
|
1853 |
struct iovec *iov = iovstack; |
1da177e4c
|
1854 1855 1856 1857 |
unsigned long cmsg_ptr; int err, iov_size, total_len, len; /* kernel mode address */ |
230b18392
|
1858 |
struct sockaddr_storage addr; |
1da177e4c
|
1859 1860 1861 1862 |
/* user mode address pointers */ struct sockaddr __user *uaddr; int __user *uaddr_len; |
89bddce58
|
1863 |
|
1da177e4c
|
1864 |
if (MSG_CMSG_COMPAT & flags) { |
a2e272554
|
1865 |
if (get_compat_msghdr(msg_sys, msg_compat)) |
1da177e4c
|
1866 |
return -EFAULT; |
89bddce58
|
1867 |
} |
a2e272554
|
1868 |
else if (copy_from_user(msg_sys, msg, sizeof(struct msghdr))) |
89bddce58
|
1869 |
return -EFAULT; |
1da177e4c
|
1870 |
|
1da177e4c
|
1871 |
err = -EMSGSIZE; |
a2e272554
|
1872 1873 |
if (msg_sys->msg_iovlen > UIO_MAXIOV) goto out; |
89bddce58
|
1874 1875 |
/* Check whether to allocate the iovec area */ |
1da177e4c
|
1876 |
err = -ENOMEM; |
a2e272554
|
1877 1878 |
iov_size = msg_sys->msg_iovlen * sizeof(struct iovec); if (msg_sys->msg_iovlen > UIO_FASTIOV) { |
1da177e4c
|
1879 1880 |
iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL); if (!iov) |
a2e272554
|
1881 |
goto out; |
1da177e4c
|
1882 1883 1884 |
} /* |
89bddce58
|
1885 1886 |
* Save the user-mode address (verify_iovec will change the * kernel msghdr to use the kernel address space) |
1da177e4c
|
1887 |
*/ |
89bddce58
|
1888 |
|
a2e272554
|
1889 |
uaddr = (__force void __user *)msg_sys->msg_name; |
1da177e4c
|
1890 1891 |
uaddr_len = COMPAT_NAMELEN(msg); if (MSG_CMSG_COMPAT & flags) { |
a2e272554
|
1892 |
err = verify_compat_iovec(msg_sys, iov, |
230b18392
|
1893 1894 |
(struct sockaddr *)&addr, VERIFY_WRITE); |
1da177e4c
|
1895 |
} else |
a2e272554
|
1896 |
err = verify_iovec(msg_sys, iov, |
230b18392
|
1897 1898 |
(struct sockaddr *)&addr, VERIFY_WRITE); |
1da177e4c
|
1899 1900 |
if (err < 0) goto out_freeiov; |
89bddce58
|
1901 |
total_len = err; |
1da177e4c
|
1902 |
|
a2e272554
|
1903 1904 |
cmsg_ptr = (unsigned long)msg_sys->msg_control; msg_sys->msg_flags = flags & (MSG_CMSG_CLOEXEC|MSG_CMSG_COMPAT); |
89bddce58
|
1905 |
|
1da177e4c
|
1906 1907 |
if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; |
a2e272554
|
1908 1909 |
err = (nosec ? sock_recvmsg_nosec : sock_recvmsg)(sock, msg_sys, total_len, flags); |
1da177e4c
|
1910 1911 1912 1913 1914 |
if (err < 0) goto out_freeiov; len = err; if (uaddr != NULL) { |
230b18392
|
1915 |
err = move_addr_to_user((struct sockaddr *)&addr, |
a2e272554
|
1916 |
msg_sys->msg_namelen, uaddr, |
89bddce58
|
1917 |
uaddr_len); |
1da177e4c
|
1918 1919 1920 |
if (err < 0) goto out_freeiov; } |
a2e272554
|
1921 |
err = __put_user((msg_sys->msg_flags & ~MSG_CMSG_COMPAT), |
37f7f421c
|
1922 |
COMPAT_FLAGS(msg)); |
1da177e4c
|
1923 1924 1925 |
if (err) goto out_freeiov; if (MSG_CMSG_COMPAT & flags) |
a2e272554
|
1926 |
err = __put_user((unsigned long)msg_sys->msg_control - cmsg_ptr, |
1da177e4c
|
1927 1928 |
&msg_compat->msg_controllen); else |
a2e272554
|
1929 |
err = __put_user((unsigned long)msg_sys->msg_control - cmsg_ptr, |
1da177e4c
|
1930 1931 1932 1933 1934 1935 1936 1937 |
&msg->msg_controllen); if (err) goto out_freeiov; err = len; out_freeiov: if (iov != iovstack) sock_kfree_s(sock->sk, iov, iov_size); |
a2e272554
|
1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 |
out: return err; } /* * BSD recvmsg interface */ SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg, unsigned int, flags) { int fput_needed, err; struct msghdr msg_sys; struct socket *sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; err = __sys_recvmsg(sock, msg, &msg_sys, flags, 0); |
6cb153cab
|
1957 |
fput_light(sock->file, fput_needed); |
1da177e4c
|
1958 1959 1960 |
out: return err; } |
a2e272554
|
1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 |
/* * Linux recvmmsg interface */ int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, unsigned int flags, struct timespec *timeout) { int fput_needed, err, datagrams; struct socket *sock; struct mmsghdr __user *entry; |
d7256d0eb
|
1971 |
struct compat_mmsghdr __user *compat_entry; |
a2e272554
|
1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 |
struct msghdr msg_sys; struct timespec end_time; if (timeout && poll_select_set_timeout(&end_time, timeout->tv_sec, timeout->tv_nsec)) return -EINVAL; datagrams = 0; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) return err; err = sock_error(sock->sk); if (err) goto out_put; entry = mmsg; |
d7256d0eb
|
1991 |
compat_entry = (struct compat_mmsghdr __user *)mmsg; |
a2e272554
|
1992 1993 1994 1995 1996 |
while (datagrams < vlen) { /* * No need to ask LSM for more than the first datagram. */ |
d7256d0eb
|
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 |
if (MSG_CMSG_COMPAT & flags) { err = __sys_recvmsg(sock, (struct msghdr __user *)compat_entry, &msg_sys, flags, datagrams); if (err < 0) break; err = __put_user(err, &compat_entry->msg_len); ++compat_entry; } else { err = __sys_recvmsg(sock, (struct msghdr __user *)entry, &msg_sys, flags, datagrams); if (err < 0) break; err = put_user(err, &entry->msg_len); ++entry; } |
a2e272554
|
2012 2013 |
if (err) break; |
a2e272554
|
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 |
++datagrams; if (timeout) { ktime_get_ts(timeout); *timeout = timespec_sub(end_time, *timeout); if (timeout->tv_sec < 0) { timeout->tv_sec = timeout->tv_nsec = 0; break; } /* Timeout, return less than vlen datagrams */ if (timeout->tv_nsec == 0 && timeout->tv_sec == 0) break; } /* Out of band data, return right away */ if (msg_sys.msg_flags & MSG_OOB) break; } out_put: fput_light(sock->file, fput_needed); |
1da177e4c
|
2036 |
|
a2e272554
|
2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 |
if (err == 0) return datagrams; if (datagrams != 0) { /* * We may return less entries than requested (vlen) if the * sock is non block and there aren't enough datagrams... */ if (err != -EAGAIN) { /* * ... or if recvmsg returns an error after we * received some datagrams, where we record the * error to return on the next call or if the * app asks about it using getsockopt(SO_ERROR). */ sock->sk->sk_err = -err; } return datagrams; } return err; } SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg, unsigned int, vlen, unsigned int, flags, struct timespec __user *, timeout) { int datagrams; struct timespec timeout_sys; if (!timeout) return __sys_recvmmsg(fd, mmsg, vlen, flags, NULL); if (copy_from_user(&timeout_sys, timeout, sizeof(timeout_sys))) return -EFAULT; datagrams = __sys_recvmmsg(fd, mmsg, vlen, flags, &timeout_sys); if (datagrams > 0 && copy_to_user(timeout, &timeout_sys, sizeof(timeout_sys))) datagrams = -EFAULT; return datagrams; } #ifdef __ARCH_WANT_SYS_SOCKETCALL |
1da177e4c
|
2084 2085 |
/* Argument list sizes for sys_socketcall */ #define AL(x) ((x) * sizeof(unsigned long)) |
a2e272554
|
2086 |
static const unsigned char nargs[20] = { |
89bddce58
|
2087 2088 |
AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), AL(3),AL(3),AL(4),AL(4),AL(4),AL(6), |
aaca0bdca
|
2089 |
AL(6),AL(2),AL(5),AL(5),AL(3),AL(3), |
a2e272554
|
2090 |
AL(4),AL(5) |
89bddce58
|
2091 |
}; |
1da177e4c
|
2092 2093 2094 |
#undef AL /* |
89bddce58
|
2095 |
* System call vectors. |
1da177e4c
|
2096 2097 2098 |
* * Argument checking cleaned up. Saved 20% in size. * This function doesn't need to set the kernel lock because |
89bddce58
|
2099 |
* it is set by the callees. |
1da177e4c
|
2100 |
*/ |
3e0fa65f8
|
2101 |
SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) |
1da177e4c
|
2102 2103 |
{ unsigned long a[6]; |
89bddce58
|
2104 |
unsigned long a0, a1; |
1da177e4c
|
2105 |
int err; |
47379052b
|
2106 |
unsigned int len; |
1da177e4c
|
2107 |
|
a2e272554
|
2108 |
if (call < 1 || call > SYS_RECVMMSG) |
1da177e4c
|
2109 |
return -EINVAL; |
47379052b
|
2110 2111 2112 |
len = nargs[call]; if (len > sizeof(a)) return -EINVAL; |
1da177e4c
|
2113 |
/* copy_from_user should be SMP safe. */ |
47379052b
|
2114 |
if (copy_from_user(a, args, len)) |
1da177e4c
|
2115 |
return -EFAULT; |
3ec3b2fba
|
2116 |
|
f3298dc4f
|
2117 |
audit_socketcall(nargs[call] / sizeof(unsigned long), a); |
3ec3b2fba
|
2118 |
|
89bddce58
|
2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 |
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: |
de11defeb
|
2136 2137 |
err = sys_accept4(a0, (struct sockaddr __user *)a1, (int __user *)a[2], 0); |
89bddce58
|
2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 |
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; |
a2e272554
|
2184 2185 2186 2187 |
case SYS_RECVMMSG: err = sys_recvmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3], (struct timespec __user *)a[4]); break; |
de11defeb
|
2188 2189 2190 |
case SYS_ACCEPT4: err = sys_accept4(a0, (struct sockaddr __user *)a1, (int __user *)a[2], a[3]); |
aaca0bdca
|
2191 |
break; |
89bddce58
|
2192 2193 2194 |
default: err = -EINVAL; break; |
1da177e4c
|
2195 2196 2197 |
} return err; } |
89bddce58
|
2198 |
#endif /* __ARCH_WANT_SYS_SOCKETCALL */ |
1da177e4c
|
2199 |
|
55737fda0
|
2200 2201 2202 2203 |
/** * sock_register - add a socket protocol handler * @ops: description of protocol * |
1da177e4c
|
2204 2205 |
* This function is called by a protocol handler that wants to * advertise its address family, and have it linked into the |
55737fda0
|
2206 2207 |
* socket interface. The value ops->family coresponds to the * socket system call protocol family. |
1da177e4c
|
2208 |
*/ |
f0fd27d42
|
2209 |
int sock_register(const struct net_proto_family *ops) |
1da177e4c
|
2210 2211 2212 2213 |
{ int err; if (ops->family >= NPROTO) { |
89bddce58
|
2214 2215 2216 |
printk(KERN_CRIT "protocol %d >= NPROTO(%d) ", ops->family, NPROTO); |
1da177e4c
|
2217 2218 |
return -ENOBUFS; } |
55737fda0
|
2219 2220 2221 2222 2223 |
spin_lock(&net_family_lock); if (net_families[ops->family]) err = -EEXIST; else { |
89bddce58
|
2224 |
net_families[ops->family] = ops; |
1da177e4c
|
2225 2226 |
err = 0; } |
55737fda0
|
2227 |
spin_unlock(&net_family_lock); |
89bddce58
|
2228 2229 |
printk(KERN_INFO "NET: Registered protocol family %d ", ops->family); |
1da177e4c
|
2230 2231 |
return err; } |
55737fda0
|
2232 2233 2234 2235 |
/** * sock_unregister - remove a protocol handler * @family: protocol family to remove * |
1da177e4c
|
2236 2237 |
* This function is called by a protocol handler that wants to * remove its address family, and have it unlinked from the |
55737fda0
|
2238 2239 2240 2241 2242 2243 |
* new socket creation. * * If protocol handler is a module, then it can use module reference * counts to protect against new references. If protocol handler is not * a module then it needs to provide its own protection in * the ops->create routine. |
1da177e4c
|
2244 |
*/ |
f0fd27d42
|
2245 |
void sock_unregister(int family) |
1da177e4c
|
2246 |
{ |
f0fd27d42
|
2247 |
BUG_ON(family < 0 || family >= NPROTO); |
1da177e4c
|
2248 |
|
55737fda0
|
2249 |
spin_lock(&net_family_lock); |
89bddce58
|
2250 |
net_families[family] = NULL; |
55737fda0
|
2251 2252 2253 |
spin_unlock(&net_family_lock); synchronize_rcu(); |
89bddce58
|
2254 2255 |
printk(KERN_INFO "NET: Unregistered protocol family %d ", family); |
1da177e4c
|
2256 |
} |
77d76ea31
|
2257 |
static int __init sock_init(void) |
1da177e4c
|
2258 2259 |
{ /* |
89bddce58
|
2260 |
* Initialize sock SLAB cache. |
1da177e4c
|
2261 |
*/ |
89bddce58
|
2262 |
|
1da177e4c
|
2263 |
sk_init(); |
1da177e4c
|
2264 |
/* |
89bddce58
|
2265 |
* Initialize skbuff SLAB cache |
1da177e4c
|
2266 2267 |
*/ skb_init(); |
1da177e4c
|
2268 2269 |
/* |
89bddce58
|
2270 |
* Initialize the protocols module. |
1da177e4c
|
2271 2272 2273 2274 2275 |
*/ init_inodecache(); register_filesystem(&sock_fs_type); sock_mnt = kern_mount(&sock_fs_type); |
77d76ea31
|
2276 2277 |
/* The real protocol initialization is performed in later initcalls. |
1da177e4c
|
2278 2279 2280 2281 2282 |
*/ #ifdef CONFIG_NETFILTER netfilter_init(); #endif |
cbeb321a6
|
2283 2284 |
return 0; |
1da177e4c
|
2285 |
} |
77d76ea31
|
2286 |
core_initcall(sock_init); /* early initcall */ |
1da177e4c
|
2287 2288 2289 2290 2291 |
#ifdef CONFIG_PROC_FS void socket_seq_show(struct seq_file *seq) { int cpu; int counter = 0; |
6f9120422
|
2292 |
for_each_possible_cpu(cpu) |
89bddce58
|
2293 |
counter += per_cpu(sockets_in_use, cpu); |
1da177e4c
|
2294 2295 2296 2297 2298 2299 2300 2301 |
/* It can be negative, by the way. 8) */ if (counter < 0) counter = 0; seq_printf(seq, "sockets: used %d ", counter); } |
89bddce58
|
2302 |
#endif /* CONFIG_PROC_FS */ |
1da177e4c
|
2303 |
|
89bbfc95d
|
2304 |
#ifdef CONFIG_COMPAT |
6b96018b2
|
2305 2306 |
static int do_siocgstamp(struct net *net, struct socket *sock, unsigned int cmd, struct compat_timeval __user *up) |
7a229387d
|
2307 |
{ |
7a229387d
|
2308 2309 2310 2311 2312 |
mm_segment_t old_fs = get_fs(); struct timeval ktv; int err; set_fs(KERNEL_DS); |
6b96018b2
|
2313 |
err = sock_do_ioctl(net, sock, cmd, (unsigned long)&ktv); |
7a229387d
|
2314 2315 2316 2317 2318 2319 2320 |
set_fs(old_fs); if (!err) { err = put_user(ktv.tv_sec, &up->tv_sec); err |= __put_user(ktv.tv_usec, &up->tv_usec); } return err; } |
6b96018b2
|
2321 2322 |
static int do_siocgstampns(struct net *net, struct socket *sock, unsigned int cmd, struct compat_timespec __user *up) |
7a229387d
|
2323 |
{ |
7a229387d
|
2324 2325 2326 2327 2328 |
mm_segment_t old_fs = get_fs(); struct timespec kts; int err; set_fs(KERNEL_DS); |
6b96018b2
|
2329 |
err = sock_do_ioctl(net, sock, cmd, (unsigned long)&kts); |
7a229387d
|
2330 2331 2332 2333 2334 2335 2336 |
set_fs(old_fs); if (!err) { err = put_user(kts.tv_sec, &up->tv_sec); err |= __put_user(kts.tv_nsec, &up->tv_nsec); } return err; } |
6b96018b2
|
2337 |
static int dev_ifname32(struct net *net, struct compat_ifreq __user *uifr32) |
7a229387d
|
2338 2339 2340 2341 2342 |
{ struct ifreq __user *uifr; int err; uifr = compat_alloc_user_space(sizeof(struct ifreq)); |
6b96018b2
|
2343 |
if (copy_in_user(uifr, uifr32, sizeof(struct compat_ifreq))) |
7a229387d
|
2344 |
return -EFAULT; |
6b96018b2
|
2345 |
err = dev_ioctl(net, SIOCGIFNAME, uifr); |
7a229387d
|
2346 2347 |
if (err) return err; |
6b96018b2
|
2348 |
if (copy_in_user(uifr32, uifr, sizeof(struct compat_ifreq))) |
7a229387d
|
2349 2350 2351 2352 |
return -EFAULT; return 0; } |
6b96018b2
|
2353 |
static int dev_ifconf(struct net *net, struct compat_ifconf __user *uifc32) |
7a229387d
|
2354 |
{ |
6b96018b2
|
2355 |
struct compat_ifconf ifc32; |
7a229387d
|
2356 2357 |
struct ifconf ifc; struct ifconf __user *uifc; |
6b96018b2
|
2358 |
struct compat_ifreq __user *ifr32; |
7a229387d
|
2359 2360 2361 |
struct ifreq __user *ifr; unsigned int i, j; int err; |
6b96018b2
|
2362 |
if (copy_from_user(&ifc32, uifc32, sizeof(struct compat_ifconf))) |
7a229387d
|
2363 2364 2365 2366 2367 2368 2369 2370 |
return -EFAULT; if (ifc32.ifcbuf == 0) { ifc32.ifc_len = 0; ifc.ifc_len = 0; ifc.ifc_req = NULL; uifc = compat_alloc_user_space(sizeof(struct ifconf)); } else { |
6b96018b2
|
2371 |
size_t len =((ifc32.ifc_len / sizeof (struct compat_ifreq)) + 1) * |
7a229387d
|
2372 2373 2374 2375 2376 |
sizeof (struct ifreq); uifc = compat_alloc_user_space(sizeof(struct ifconf) + len); ifc.ifc_len = len; ifr = ifc.ifc_req = (void __user *)(uifc + 1); ifr32 = compat_ptr(ifc32.ifcbuf); |
6b96018b2
|
2377 2378 |
for (i = 0; i < ifc32.ifc_len; i += sizeof (struct compat_ifreq)) { if (copy_in_user(ifr, ifr32, sizeof(struct compat_ifreq))) |
7a229387d
|
2379 2380 2381 2382 2383 2384 2385 |
return -EFAULT; ifr++; ifr32++; } } if (copy_to_user(uifc, &ifc, sizeof(struct ifconf))) return -EFAULT; |
6b96018b2
|
2386 |
err = dev_ioctl(net, SIOCGIFCONF, uifc); |
7a229387d
|
2387 2388 2389 2390 2391 2392 2393 2394 2395 |
if (err) return err; if (copy_from_user(&ifc, uifc, sizeof(struct ifconf))) return -EFAULT; ifr = ifc.ifc_req; ifr32 = compat_ptr(ifc32.ifcbuf); for (i = 0, j = 0; |
6b96018b2
|
2396 2397 2398 |
i + sizeof (struct compat_ifreq) <= ifc32.ifc_len && j < ifc.ifc_len; i += sizeof (struct compat_ifreq), j += sizeof (struct ifreq)) { if (copy_in_user(ifr32, ifr, sizeof (struct compat_ifreq))) |
7a229387d
|
2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 |
return -EFAULT; ifr32++; ifr++; } if (ifc32.ifcbuf == 0) { /* Translate from 64-bit structure multiple to * a 32-bit one. */ i = ifc.ifc_len; |
6b96018b2
|
2409 |
i = ((i / sizeof(struct ifreq)) * sizeof(struct compat_ifreq)); |
7a229387d
|
2410 2411 2412 2413 |
ifc32.ifc_len = i; } else { ifc32.ifc_len = i; } |
6b96018b2
|
2414 |
if (copy_to_user(uifc32, &ifc32, sizeof(struct compat_ifconf))) |
7a229387d
|
2415 2416 2417 2418 |
return -EFAULT; return 0; } |
6b96018b2
|
2419 |
static int ethtool_ioctl(struct net *net, struct compat_ifreq __user *ifr32) |
7a229387d
|
2420 2421 |
{ struct ifreq __user *ifr; |
7a229387d
|
2422 2423 2424 2425 |
u32 data; void __user *datap; ifr = compat_alloc_user_space(sizeof(*ifr)); |
7a229387d
|
2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 |
if (copy_in_user(&ifr->ifr_name, &ifr32->ifr_name, IFNAMSIZ)) return -EFAULT; if (get_user(data, &ifr32->ifr_ifru.ifru_data)) return -EFAULT; datap = compat_ptr(data); if (put_user(datap, &ifr->ifr_ifru.ifru_data)) return -EFAULT; |
6b96018b2
|
2436 |
return dev_ioctl(net, SIOCETHTOOL, ifr); |
7a229387d
|
2437 |
} |
7a50a240c
|
2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 |
static int compat_siocwandev(struct net *net, struct compat_ifreq __user *uifr32) { void __user *uptr; compat_uptr_t uptr32; struct ifreq __user *uifr; uifr = compat_alloc_user_space(sizeof (*uifr)); if (copy_in_user(uifr, uifr32, sizeof(struct compat_ifreq))) return -EFAULT; if (get_user(uptr32, &uifr32->ifr_settings.ifs_ifsu)) return -EFAULT; uptr = compat_ptr(uptr32); if (put_user(uptr, &uifr->ifr_settings.ifs_ifsu.raw_hdlc)) return -EFAULT; return dev_ioctl(net, SIOCWANDEV, uifr); } |
6b96018b2
|
2458 2459 |
static int bond_ioctl(struct net *net, unsigned int cmd, struct compat_ifreq __user *ifr32) |
7a229387d
|
2460 2461 2462 |
{ struct ifreq kifr; struct ifreq __user *uifr; |
7a229387d
|
2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 |
mm_segment_t old_fs; int err; u32 data; void __user *datap; switch (cmd) { case SIOCBONDENSLAVE: case SIOCBONDRELEASE: case SIOCBONDSETHWADDR: case SIOCBONDCHANGEACTIVE: |
6b96018b2
|
2473 |
if (copy_from_user(&kifr, ifr32, sizeof(struct compat_ifreq))) |
7a229387d
|
2474 2475 2476 2477 |
return -EFAULT; old_fs = get_fs(); set_fs (KERNEL_DS); |
6b96018b2
|
2478 |
err = dev_ioctl(net, cmd, &kifr); |
7a229387d
|
2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 |
set_fs (old_fs); return err; case SIOCBONDSLAVEINFOQUERY: case SIOCBONDINFOQUERY: uifr = compat_alloc_user_space(sizeof(*uifr)); if (copy_in_user(&uifr->ifr_name, &ifr32->ifr_name, IFNAMSIZ)) return -EFAULT; if (get_user(data, &ifr32->ifr_ifru.ifru_data)) return -EFAULT; datap = compat_ptr(data); if (put_user(datap, &uifr->ifr_ifru.ifru_data)) return -EFAULT; |
6b96018b2
|
2494 |
return dev_ioctl(net, cmd, uifr); |
7a229387d
|
2495 2496 2497 2498 |
default: return -EINVAL; }; } |
6b96018b2
|
2499 2500 |
static int siocdevprivate_ioctl(struct net *net, unsigned int cmd, struct compat_ifreq __user *u_ifreq32) |
7a229387d
|
2501 2502 |
{ struct ifreq __user *u_ifreq64; |
7a229387d
|
2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 |
char tmp_buf[IFNAMSIZ]; void __user *data64; u32 data32; if (copy_from_user(&tmp_buf[0], &(u_ifreq32->ifr_ifrn.ifrn_name[0]), IFNAMSIZ)) return -EFAULT; if (__get_user(data32, &u_ifreq32->ifr_ifru.ifru_data)) return -EFAULT; data64 = compat_ptr(data32); u_ifreq64 = compat_alloc_user_space(sizeof(*u_ifreq64)); /* Don't check these user accesses, just let that get trapped * in the ioctl handler instead. */ if (copy_to_user(&u_ifreq64->ifr_ifrn.ifrn_name[0], &tmp_buf[0], IFNAMSIZ)) return -EFAULT; if (__put_user(data64, &u_ifreq64->ifr_ifru.ifru_data)) return -EFAULT; |
6b96018b2
|
2524 |
return dev_ioctl(net, cmd, u_ifreq64); |
7a229387d
|
2525 |
} |
6b96018b2
|
2526 2527 |
static int dev_ifsioc(struct net *net, struct socket *sock, unsigned int cmd, struct compat_ifreq __user *uifr32) |
7a229387d
|
2528 |
{ |
a2116ed22
|
2529 |
struct ifreq __user *uifr; |
7a229387d
|
2530 |
int err; |
a2116ed22
|
2531 2532 2533 2534 2535 |
uifr = compat_alloc_user_space(sizeof(*uifr)); if (copy_in_user(uifr, uifr32, sizeof(*uifr32))) return -EFAULT; err = sock_do_ioctl(net, sock, cmd, (unsigned long)uifr); |
7a229387d
|
2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 |
if (!err) { switch (cmd) { case SIOCGIFFLAGS: case SIOCGIFMETRIC: case SIOCGIFMTU: case SIOCGIFMEM: case SIOCGIFHWADDR: case SIOCGIFINDEX: case SIOCGIFADDR: case SIOCGIFBRDADDR: case SIOCGIFDSTADDR: case SIOCGIFNETMASK: |
fab2532ba
|
2548 |
case SIOCGIFPFLAGS: |
7a229387d
|
2549 |
case SIOCGIFTXQLEN: |
fab2532ba
|
2550 2551 |
case SIOCGMIIPHY: case SIOCGMIIREG: |
a2116ed22
|
2552 |
if (copy_in_user(uifr32, uifr, sizeof(*uifr32))) |
7a229387d
|
2553 2554 2555 2556 2557 2558 |
err = -EFAULT; break; } } return err; } |
a2116ed22
|
2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 |
static int compat_sioc_ifmap(struct net *net, unsigned int cmd, struct compat_ifreq __user *uifr32) { struct ifreq ifr; struct compat_ifmap __user *uifmap32; mm_segment_t old_fs; int err; uifmap32 = &uifr32->ifr_ifru.ifru_map; err = copy_from_user(&ifr, uifr32, sizeof(ifr.ifr_name)); err |= __get_user(ifr.ifr_map.mem_start, &uifmap32->mem_start); err |= __get_user(ifr.ifr_map.mem_end, &uifmap32->mem_end); err |= __get_user(ifr.ifr_map.base_addr, &uifmap32->base_addr); err |= __get_user(ifr.ifr_map.irq, &uifmap32->irq); err |= __get_user(ifr.ifr_map.dma, &uifmap32->dma); err |= __get_user(ifr.ifr_map.port, &uifmap32->port); if (err) return -EFAULT; old_fs = get_fs(); set_fs (KERNEL_DS); err = dev_ioctl(net, cmd, (void __user *)&ifr); set_fs (old_fs); if (cmd == SIOCGIFMAP && !err) { err = copy_to_user(uifr32, &ifr, sizeof(ifr.ifr_name)); err |= __put_user(ifr.ifr_map.mem_start, &uifmap32->mem_start); err |= __put_user(ifr.ifr_map.mem_end, &uifmap32->mem_end); err |= __put_user(ifr.ifr_map.base_addr, &uifmap32->base_addr); err |= __put_user(ifr.ifr_map.irq, &uifmap32->irq); err |= __put_user(ifr.ifr_map.dma, &uifmap32->dma); err |= __put_user(ifr.ifr_map.port, &uifmap32->port); if (err) err = -EFAULT; } return err; } static int compat_siocshwtstamp(struct net *net, struct compat_ifreq __user *uifr32) { void __user *uptr; compat_uptr_t uptr32; struct ifreq __user *uifr; uifr = compat_alloc_user_space(sizeof (*uifr)); if (copy_in_user(uifr, uifr32, sizeof(struct compat_ifreq))) return -EFAULT; if (get_user(uptr32, &uifr32->ifr_data)) return -EFAULT; uptr = compat_ptr(uptr32); if (put_user(uptr, &uifr->ifr_data)) return -EFAULT; return dev_ioctl(net, SIOCSHWTSTAMP, uifr); } |
7a229387d
|
2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 |
struct rtentry32 { u32 rt_pad1; struct sockaddr rt_dst; /* target address */ struct sockaddr rt_gateway; /* gateway addr (RTF_GATEWAY) */ struct sockaddr rt_genmask; /* target network mask (IP) */ unsigned short rt_flags; short rt_pad2; u32 rt_pad3; unsigned char rt_tos; unsigned char rt_class; short rt_pad4; short rt_metric; /* +1 for binary compatibility! */ /* char * */ u32 rt_dev; /* forcing the device at add */ u32 rt_mtu; /* per route MTU/Window */ u32 rt_window; /* Window clamping */ unsigned short rt_irtt; /* Initial RTT */ }; struct in6_rtmsg32 { struct in6_addr rtmsg_dst; struct in6_addr rtmsg_src; struct in6_addr rtmsg_gateway; u32 rtmsg_type; u16 rtmsg_dst_len; u16 rtmsg_src_len; u32 rtmsg_metric; u32 rtmsg_info; u32 rtmsg_flags; s32 rtmsg_ifindex; }; |
6b96018b2
|
2647 2648 |
static int routing_ioctl(struct net *net, struct socket *sock, unsigned int cmd, void __user *argp) |
7a229387d
|
2649 2650 2651 2652 2653 2654 2655 2656 |
{ int ret; void *r = NULL; struct in6_rtmsg r6; struct rtentry r4; char devname[16]; u32 rtdev; mm_segment_t old_fs = get_fs(); |
6b96018b2
|
2657 2658 |
if (sock && sock->sk && sock->sk->sk_family == AF_INET6) { /* ipv6 */ struct in6_rtmsg32 __user *ur6 = argp; |
7a229387d
|
2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 |
ret = copy_from_user (&r6.rtmsg_dst, &(ur6->rtmsg_dst), 3 * sizeof(struct in6_addr)); ret |= __get_user (r6.rtmsg_type, &(ur6->rtmsg_type)); ret |= __get_user (r6.rtmsg_dst_len, &(ur6->rtmsg_dst_len)); ret |= __get_user (r6.rtmsg_src_len, &(ur6->rtmsg_src_len)); ret |= __get_user (r6.rtmsg_metric, &(ur6->rtmsg_metric)); ret |= __get_user (r6.rtmsg_info, &(ur6->rtmsg_info)); ret |= __get_user (r6.rtmsg_flags, &(ur6->rtmsg_flags)); ret |= __get_user (r6.rtmsg_ifindex, &(ur6->rtmsg_ifindex)); r = (void *) &r6; } else { /* ipv4 */ |
6b96018b2
|
2671 |
struct rtentry32 __user *ur4 = argp; |
7a229387d
|
2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 |
ret = copy_from_user (&r4.rt_dst, &(ur4->rt_dst), 3 * sizeof(struct sockaddr)); ret |= __get_user (r4.rt_flags, &(ur4->rt_flags)); ret |= __get_user (r4.rt_metric, &(ur4->rt_metric)); ret |= __get_user (r4.rt_mtu, &(ur4->rt_mtu)); ret |= __get_user (r4.rt_window, &(ur4->rt_window)); ret |= __get_user (r4.rt_irtt, &(ur4->rt_irtt)); ret |= __get_user (rtdev, &(ur4->rt_dev)); if (rtdev) { ret |= copy_from_user (devname, compat_ptr(rtdev), 15); r4.rt_dev = devname; devname[15] = 0; } else r4.rt_dev = NULL; r = (void *) &r4; } if (ret) { ret = -EFAULT; goto out; } set_fs (KERNEL_DS); |
6b96018b2
|
2695 |
ret = sock_do_ioctl(net, sock, cmd, (unsigned long) r); |
7a229387d
|
2696 2697 2698 |
set_fs (old_fs); out: |
7a229387d
|
2699 2700 2701 2702 2703 2704 2705 |
return ret; } /* Since old style bridge ioctl's endup using SIOCDEVPRIVATE * for some operations; this forces use of the newer bridge-utils that * use compatiable ioctls */ |
6b96018b2
|
2706 |
static int old_bridge_ioctl(compat_ulong_t __user *argp) |
7a229387d
|
2707 |
{ |
6b96018b2
|
2708 |
compat_ulong_t tmp; |
7a229387d
|
2709 |
|
6b96018b2
|
2710 |
if (get_user(tmp, argp)) |
7a229387d
|
2711 2712 2713 2714 2715 |
return -EFAULT; if (tmp == BRCTL_GET_VERSION) return BRCTL_VERSION + 1; return -EINVAL; } |
6b96018b2
|
2716 2717 2718 2719 2720 2721 |
static int compat_sock_ioctl_trans(struct file *file, struct socket *sock, unsigned int cmd, unsigned long arg) { void __user *argp = compat_ptr(arg); struct sock *sk = sock->sk; struct net *net = sock_net(sk); |
7a229387d
|
2722 |
|
6b96018b2
|
2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 |
if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) return siocdevprivate_ioctl(net, cmd, argp); switch (cmd) { case SIOCSIFBR: case SIOCGIFBR: return old_bridge_ioctl(argp); case SIOCGIFNAME: return dev_ifname32(net, argp); case SIOCGIFCONF: return dev_ifconf(net, argp); case SIOCETHTOOL: return ethtool_ioctl(net, argp); |
7a50a240c
|
2736 2737 |
case SIOCWANDEV: return compat_siocwandev(net, argp); |
a2116ed22
|
2738 2739 2740 |
case SIOCGIFMAP: case SIOCSIFMAP: return compat_sioc_ifmap(net, cmd, argp); |
6b96018b2
|
2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 |
case SIOCBONDENSLAVE: case SIOCBONDRELEASE: case SIOCBONDSETHWADDR: case SIOCBONDSLAVEINFOQUERY: case SIOCBONDINFOQUERY: case SIOCBONDCHANGEACTIVE: return bond_ioctl(net, cmd, argp); case SIOCADDRT: case SIOCDELRT: return routing_ioctl(net, sock, cmd, argp); case SIOCGSTAMP: return do_siocgstamp(net, sock, cmd, argp); case SIOCGSTAMPNS: return do_siocgstampns(net, sock, cmd, argp); |
a2116ed22
|
2755 2756 |
case SIOCSHWTSTAMP: return compat_siocshwtstamp(net, argp); |
6b96018b2
|
2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 |
case FIOSETOWN: case SIOCSPGRP: case FIOGETOWN: case SIOCGPGRP: case SIOCBRADDBR: case SIOCBRDELBR: case SIOCGIFVLAN: case SIOCSIFVLAN: case SIOCADDDLCI: case SIOCDELDLCI: return sock_ioctl(file, cmd, arg); case SIOCGIFFLAGS: case SIOCSIFFLAGS: case SIOCGIFMETRIC: case SIOCSIFMETRIC: case SIOCGIFMTU: case SIOCSIFMTU: case SIOCGIFMEM: case SIOCSIFMEM: case SIOCGIFHWADDR: case SIOCSIFHWADDR: case SIOCADDMULTI: case SIOCDELMULTI: case SIOCGIFINDEX: |
6b96018b2
|
2783 2784 2785 |
case SIOCGIFADDR: case SIOCSIFADDR: case SIOCSIFHWBROADCAST: |
6b96018b2
|
2786 |
case SIOCDIFADDR: |
6b96018b2
|
2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 |
case SIOCGIFBRDADDR: case SIOCSIFBRDADDR: case SIOCGIFDSTADDR: case SIOCSIFDSTADDR: case SIOCGIFNETMASK: case SIOCSIFNETMASK: case SIOCSIFPFLAGS: case SIOCGIFPFLAGS: case SIOCGIFTXQLEN: case SIOCSIFTXQLEN: case SIOCBRADDIF: case SIOCBRDELIF: |
9177efd39
|
2799 2800 2801 2802 |
case SIOCSIFNAME: case SIOCGMIIPHY: case SIOCGMIIREG: case SIOCSMIIREG: |
6b96018b2
|
2803 |
return dev_ifsioc(net, sock, cmd, argp); |
9177efd39
|
2804 |
|
6b96018b2
|
2805 2806 2807 |
case SIOCSARP: case SIOCGARP: case SIOCDARP: |
6b96018b2
|
2808 |
case SIOCATMARK: |
9177efd39
|
2809 2810 2811 2812 2813 2814 2815 2816 |
return sock_do_ioctl(net, sock, cmd, arg); } /* Prevent warning from compat_sys_ioctl, these always * result in -EINVAL in the native case anyway. */ switch (cmd) { case SIOCRTMSG: case SIOCGIFCOUNT: |
6b96018b2
|
2817 2818 2819 |
case SIOCSRARP: case SIOCGRARP: case SIOCDRARP: |
9177efd39
|
2820 2821 2822 2823 |
case SIOCSIFLINK: case SIOCGIFSLAVE: case SIOCSIFSLAVE: return -EINVAL; |
6b96018b2
|
2824 2825 2826 2827 |
} return -ENOIOCTLCMD; } |
7a229387d
|
2828 |
|
89bbfc95d
|
2829 |
static long compat_sock_ioctl(struct file *file, unsigned cmd, |
89bddce58
|
2830 |
unsigned long arg) |
89bbfc95d
|
2831 2832 2833 |
{ struct socket *sock = file->private_data; int ret = -ENOIOCTLCMD; |
87de87d5e
|
2834 2835 2836 2837 2838 |
struct sock *sk; struct net *net; sk = sock->sk; net = sock_net(sk); |
89bbfc95d
|
2839 2840 2841 |
if (sock->ops->compat_ioctl) ret = sock->ops->compat_ioctl(sock, cmd, arg); |
87de87d5e
|
2842 2843 2844 |
if (ret == -ENOIOCTLCMD && (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST)) ret = compat_wext_handle_ioctl(net, cmd, arg); |
6b96018b2
|
2845 2846 |
if (ret == -ENOIOCTLCMD) ret = compat_sock_ioctl_trans(file, sock, cmd, arg); |
89bbfc95d
|
2847 2848 2849 |
return ret; } #endif |
ac5a488ef
|
2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 |
int kernel_bind(struct socket *sock, struct sockaddr *addr, int addrlen) { return sock->ops->bind(sock, addr, addrlen); } int kernel_listen(struct socket *sock, int backlog) { return sock->ops->listen(sock, backlog); } int kernel_accept(struct socket *sock, struct socket **newsock, int flags) { struct sock *sk = sock->sk; int err; err = sock_create_lite(sk->sk_family, sk->sk_type, sk->sk_protocol, newsock); if (err < 0) goto done; err = sock->ops->accept(sock, *newsock, flags); if (err < 0) { sock_release(*newsock); |
fa8705b00
|
2873 |
*newsock = NULL; |
ac5a488ef
|
2874 2875 2876 2877 |
goto done; } (*newsock)->ops = sock->ops; |
1b08534e5
|
2878 |
__module_get((*newsock)->ops->owner); |
ac5a488ef
|
2879 2880 2881 2882 2883 2884 |
done: return err; } int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen, |
4768fbcbc
|
2885 |
int flags) |
ac5a488ef
|
2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 |
{ return sock->ops->connect(sock, addr, addrlen, flags); } int kernel_getsockname(struct socket *sock, struct sockaddr *addr, int *addrlen) { return sock->ops->getname(sock, addr, addrlen, 0); } int kernel_getpeername(struct socket *sock, struct sockaddr *addr, int *addrlen) { return sock->ops->getname(sock, addr, addrlen, 1); } int kernel_getsockopt(struct socket *sock, int level, int optname, char *optval, int *optlen) { mm_segment_t oldfs = get_fs(); int err; set_fs(KERNEL_DS); if (level == SOL_SOCKET) err = sock_getsockopt(sock, level, optname, optval, optlen); else err = sock->ops->getsockopt(sock, level, optname, optval, optlen); set_fs(oldfs); return err; } int kernel_setsockopt(struct socket *sock, int level, int optname, |
b7058842c
|
2919 |
char *optval, unsigned int optlen) |
ac5a488ef
|
2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 |
{ mm_segment_t oldfs = get_fs(); int err; set_fs(KERNEL_DS); if (level == SOL_SOCKET) err = sock_setsockopt(sock, level, optname, optval, optlen); else err = sock->ops->setsockopt(sock, level, optname, optval, optlen); set_fs(oldfs); return err; } int kernel_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags) { if (sock->ops->sendpage) return sock->ops->sendpage(sock, page, offset, size, flags); return sock_no_sendpage(sock, page, offset, size, flags); } int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg) { mm_segment_t oldfs = get_fs(); int err; set_fs(KERNEL_DS); err = sock->ops->ioctl(sock, cmd, arg); set_fs(oldfs); return err; } |
91cf45f02
|
2954 2955 2956 2957 |
int kernel_sock_shutdown(struct socket *sock, enum sock_shutdown_cmd how) { return sock->ops->shutdown(sock, how); } |
1da177e4c
|
2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 |
EXPORT_SYMBOL(sock_create); EXPORT_SYMBOL(sock_create_kern); EXPORT_SYMBOL(sock_create_lite); EXPORT_SYMBOL(sock_map_fd); EXPORT_SYMBOL(sock_recvmsg); EXPORT_SYMBOL(sock_register); EXPORT_SYMBOL(sock_release); EXPORT_SYMBOL(sock_sendmsg); EXPORT_SYMBOL(sock_unregister); EXPORT_SYMBOL(sock_wake_async); EXPORT_SYMBOL(sockfd_lookup); EXPORT_SYMBOL(kernel_sendmsg); EXPORT_SYMBOL(kernel_recvmsg); |
ac5a488ef
|
2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 |
EXPORT_SYMBOL(kernel_bind); EXPORT_SYMBOL(kernel_listen); EXPORT_SYMBOL(kernel_accept); EXPORT_SYMBOL(kernel_connect); EXPORT_SYMBOL(kernel_getsockname); EXPORT_SYMBOL(kernel_getpeername); EXPORT_SYMBOL(kernel_getsockopt); EXPORT_SYMBOL(kernel_setsockopt); EXPORT_SYMBOL(kernel_sendpage); EXPORT_SYMBOL(kernel_sock_ioctl); |
91cf45f02
|
2981 |
EXPORT_SYMBOL(kernel_sock_shutdown); |