Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * NET An implementation of the SOCKET network access protocol. | |
3 | * | |
4 | * Version: @(#)socket.c 1.1.93 18/02/95 | |
5 | * | |
6 | * Authors: Orest Zborowski, <obz@Kodak.COM> | |
02c30a84 | 7 | * Ross Biro |
1da177e4 LT |
8 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
9 | * | |
10 | * Fixes: | |
11 | * Anonymous : NOTSOCK/BADF cleanup. Error fix in | |
12 | * shutdown() | |
13 | * Alan Cox : verify_area() fixes | |
14 | * Alan Cox : Removed DDI | |
15 | * Jonathan Kamens : SOCK_DGRAM reconnect bug | |
16 | * Alan Cox : Moved a load of checks to the very | |
17 | * top level. | |
18 | * Alan Cox : Move address structures to/from user | |
19 | * mode above the protocol layers. | |
20 | * Rob Janssen : Allow 0 length sends. | |
21 | * Alan Cox : Asynchronous I/O support (cribbed from the | |
22 | * tty drivers). | |
23 | * Niibe Yutaka : Asynchronous I/O for writes (4.4BSD style) | |
24 | * Jeff Uphoff : Made max number of sockets command-line | |
25 | * configurable. | |
26 | * Matti Aarnio : Made the number of sockets dynamic, | |
27 | * to be allocated when needed, and mr. | |
28 | * Uphoff's max is used as max to be | |
29 | * allowed to allocate. | |
30 | * Linus : Argh. removed all the socket allocation | |
31 | * altogether: it's in the inode now. | |
32 | * Alan Cox : Made sock_alloc()/sock_release() public | |
33 | * for NetROM and future kernel nfsd type | |
34 | * stuff. | |
35 | * Alan Cox : sendmsg/recvmsg basics. | |
36 | * Tom Dyas : Export net symbols. | |
37 | * Marcin Dalecki : Fixed problems with CONFIG_NET="n". | |
38 | * Alan Cox : Added thread locking to sys_* calls | |
39 | * for sockets. May have errors at the | |
40 | * moment. | |
41 | * Kevin Buhr : Fixed the dumb errors in the above. | |
42 | * Andi Kleen : Some small cleanups, optimizations, | |
43 | * and fixed a copy_from_user() bug. | |
44 | * Tigran Aivazian : sys_send(args) calls sys_sendto(args, NULL, 0) | |
89bddce5 | 45 | * Tigran Aivazian : Made listen(2) backlog sanity checks |
1da177e4 LT |
46 | * protocol-independent |
47 | * | |
48 | * | |
49 | * This program is free software; you can redistribute it and/or | |
50 | * modify it under the terms of the GNU General Public License | |
51 | * as published by the Free Software Foundation; either version | |
52 | * 2 of the License, or (at your option) any later version. | |
53 | * | |
54 | * | |
55 | * This module is effectively the top level interface to the BSD socket | |
89bddce5 | 56 | * paradigm. |
1da177e4 LT |
57 | * |
58 | * Based upon Swansea University Computer Society NET3.039 | |
59 | */ | |
60 | ||
1da177e4 | 61 | #include <linux/mm.h> |
1da177e4 LT |
62 | #include <linux/socket.h> |
63 | #include <linux/file.h> | |
64 | #include <linux/net.h> | |
65 | #include <linux/interrupt.h> | |
aaca0bdc | 66 | #include <linux/thread_info.h> |
55737fda | 67 | #include <linux/rcupdate.h> |
1da177e4 LT |
68 | #include <linux/netdevice.h> |
69 | #include <linux/proc_fs.h> | |
70 | #include <linux/seq_file.h> | |
4a3e2f71 | 71 | #include <linux/mutex.h> |
1da177e4 | 72 | #include <linux/if_bridge.h> |
20380731 ACM |
73 | #include <linux/if_frad.h> |
74 | #include <linux/if_vlan.h> | |
1da177e4 LT |
75 | #include <linux/init.h> |
76 | #include <linux/poll.h> | |
77 | #include <linux/cache.h> | |
78 | #include <linux/module.h> | |
79 | #include <linux/highmem.h> | |
1da177e4 LT |
80 | #include <linux/mount.h> |
81 | #include <linux/security.h> | |
82 | #include <linux/syscalls.h> | |
83 | #include <linux/compat.h> | |
84 | #include <linux/kmod.h> | |
3ec3b2fb | 85 | #include <linux/audit.h> |
d86b5e0e | 86 | #include <linux/wireless.h> |
1b8d7ae4 | 87 | #include <linux/nsproxy.h> |
1fd7317d | 88 | #include <linux/magic.h> |
5a0e3ad6 | 89 | #include <linux/slab.h> |
600e1779 | 90 | #include <linux/xattr.h> |
1da177e4 LT |
91 | |
92 | #include <asm/uaccess.h> | |
93 | #include <asm/unistd.h> | |
94 | ||
95 | #include <net/compat.h> | |
87de87d5 | 96 | #include <net/wext.h> |
f8451725 | 97 | #include <net/cls_cgroup.h> |
1da177e4 LT |
98 | |
99 | #include <net/sock.h> | |
6fa3eb70 | 100 | #include <net/inet_sock.h> |
1da177e4 LT |
101 | #include <linux/netfilter.h> |
102 | ||
6b96018b AB |
103 | #include <linux/if_tun.h> |
104 | #include <linux/ipv6_route.h> | |
105 | #include <linux/route.h> | |
6b96018b AB |
106 | #include <linux/sockios.h> |
107 | #include <linux/atalk.h> | |
108 | ||
1da177e4 | 109 | static int sock_no_open(struct inode *irrelevant, struct file *dontcare); |
027445c3 BP |
110 | static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov, |
111 | unsigned long nr_segs, loff_t pos); | |
112 | static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov, | |
113 | unsigned long nr_segs, loff_t pos); | |
89bddce5 | 114 | static int sock_mmap(struct file *file, struct vm_area_struct *vma); |
1da177e4 LT |
115 | |
116 | static int sock_close(struct inode *inode, struct file *file); | |
117 | static unsigned int sock_poll(struct file *file, | |
118 | struct poll_table_struct *wait); | |
89bddce5 | 119 | static long sock_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
89bbfc95 SP |
120 | #ifdef CONFIG_COMPAT |
121 | static long compat_sock_ioctl(struct file *file, | |
89bddce5 | 122 | unsigned int cmd, unsigned long arg); |
89bbfc95 | 123 | #endif |
1da177e4 | 124 | static int sock_fasync(int fd, struct file *filp, int on); |
1da177e4 LT |
125 | static ssize_t sock_sendpage(struct file *file, struct page *page, |
126 | int offset, size_t size, loff_t *ppos, int more); | |
9c55e01c | 127 | static ssize_t sock_splice_read(struct file *file, loff_t *ppos, |
c6d409cf | 128 | struct pipe_inode_info *pipe, size_t len, |
9c55e01c | 129 | unsigned int flags); |
1da177e4 | 130 | |
1da177e4 LT |
131 | /* |
132 | * Socket files have a set of 'special' operations as well as the generic file ones. These don't appear | |
133 | * in the operation structures but are done directly via the socketcall() multiplexor. | |
134 | */ | |
135 | ||
da7071d7 | 136 | static const struct file_operations socket_file_ops = { |
1da177e4 LT |
137 | .owner = THIS_MODULE, |
138 | .llseek = no_llseek, | |
139 | .aio_read = sock_aio_read, | |
140 | .aio_write = sock_aio_write, | |
141 | .poll = sock_poll, | |
142 | .unlocked_ioctl = sock_ioctl, | |
89bbfc95 SP |
143 | #ifdef CONFIG_COMPAT |
144 | .compat_ioctl = compat_sock_ioctl, | |
145 | #endif | |
1da177e4 LT |
146 | .mmap = sock_mmap, |
147 | .open = sock_no_open, /* special open code to disallow open via /proc */ | |
148 | .release = sock_close, | |
149 | .fasync = sock_fasync, | |
5274f052 JA |
150 | .sendpage = sock_sendpage, |
151 | .splice_write = generic_splice_sendpage, | |
9c55e01c | 152 | .splice_read = sock_splice_read, |
1da177e4 LT |
153 | }; |
154 | ||
155 | /* | |
156 | * The protocol list. Each protocol is registered in here. | |
157 | */ | |
158 | ||
1da177e4 | 159 | static DEFINE_SPINLOCK(net_family_lock); |
190683a9 | 160 | static const struct net_proto_family __rcu *net_families[NPROTO] __read_mostly; |
1da177e4 | 161 | |
1da177e4 LT |
162 | /* |
163 | * Statistics counters of the socket lists | |
164 | */ | |
165 | ||
c6d409cf | 166 | static DEFINE_PER_CPU(int, sockets_in_use); |
1da177e4 LT |
167 | |
168 | /* | |
89bddce5 SH |
169 | * Support routines. |
170 | * Move socket addresses back and forth across the kernel/user | |
171 | * divide and look after the messy bits. | |
1da177e4 LT |
172 | */ |
173 | ||
1da177e4 LT |
174 | /** |
175 | * move_addr_to_kernel - copy a socket address into kernel space | |
176 | * @uaddr: Address in user space | |
177 | * @kaddr: Address in kernel space | |
178 | * @ulen: Length in user space | |
179 | * | |
180 | * The address is copied into kernel space. If the provided address is | |
181 | * too long an error code of -EINVAL is returned. If the copy gives | |
182 | * invalid addresses -EFAULT is returned. On a success 0 is returned. | |
183 | */ | |
184 | ||
43db362d | 185 | int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr) |
1da177e4 | 186 | { |
230b1839 | 187 | if (ulen < 0 || ulen > sizeof(struct sockaddr_storage)) |
1da177e4 | 188 | return -EINVAL; |
89bddce5 | 189 | if (ulen == 0) |
1da177e4 | 190 | return 0; |
89bddce5 | 191 | if (copy_from_user(kaddr, uaddr, ulen)) |
1da177e4 | 192 | return -EFAULT; |
3ec3b2fb | 193 | return audit_sockaddr(ulen, kaddr); |
1da177e4 LT |
194 | } |
195 | ||
196 | /** | |
197 | * move_addr_to_user - copy an address to user space | |
198 | * @kaddr: kernel space address | |
199 | * @klen: length of address in kernel | |
200 | * @uaddr: user space address | |
201 | * @ulen: pointer to user length field | |
202 | * | |
203 | * The value pointed to by ulen on entry is the buffer length available. | |
204 | * This is overwritten with the buffer space used. -EINVAL is returned | |
205 | * if an overlong buffer is specified or a negative buffer size. -EFAULT | |
206 | * is returned if either the buffer or the length field are not | |
207 | * accessible. | |
208 | * After copying the data up to the limit the user specifies, the true | |
209 | * length of the data is written over the length limit the user | |
210 | * specified. Zero is returned for a success. | |
211 | */ | |
89bddce5 | 212 | |
43db362d | 213 | static int move_addr_to_user(struct sockaddr_storage *kaddr, int klen, |
11165f14 | 214 | void __user *uaddr, int __user *ulen) |
1da177e4 LT |
215 | { |
216 | int err; | |
217 | int len; | |
218 | ||
5c586f16 | 219 | BUG_ON(klen > sizeof(struct sockaddr_storage)); |
89bddce5 SH |
220 | err = get_user(len, ulen); |
221 | if (err) | |
1da177e4 | 222 | return err; |
89bddce5 SH |
223 | if (len > klen) |
224 | len = klen; | |
5c586f16 | 225 | if (len < 0) |
1da177e4 | 226 | return -EINVAL; |
89bddce5 | 227 | if (len) { |
d6fe3945 SG |
228 | if (audit_sockaddr(klen, kaddr)) |
229 | return -ENOMEM; | |
89bddce5 | 230 | if (copy_to_user(uaddr, kaddr, len)) |
1da177e4 LT |
231 | return -EFAULT; |
232 | } | |
233 | /* | |
89bddce5 SH |
234 | * "fromlen shall refer to the value before truncation.." |
235 | * 1003.1g | |
1da177e4 LT |
236 | */ |
237 | return __put_user(klen, ulen); | |
238 | } | |
239 | ||
e18b890b | 240 | static struct kmem_cache *sock_inode_cachep __read_mostly; |
1da177e4 LT |
241 | |
242 | static struct inode *sock_alloc_inode(struct super_block *sb) | |
243 | { | |
244 | struct socket_alloc *ei; | |
eaefd110 | 245 | struct socket_wq *wq; |
89bddce5 | 246 | |
e94b1766 | 247 | ei = kmem_cache_alloc(sock_inode_cachep, GFP_KERNEL); |
1da177e4 LT |
248 | if (!ei) |
249 | return NULL; | |
eaefd110 ED |
250 | wq = kmalloc(sizeof(*wq), GFP_KERNEL); |
251 | if (!wq) { | |
43815482 ED |
252 | kmem_cache_free(sock_inode_cachep, ei); |
253 | return NULL; | |
254 | } | |
eaefd110 ED |
255 | init_waitqueue_head(&wq->wait); |
256 | wq->fasync_list = NULL; | |
257 | RCU_INIT_POINTER(ei->socket.wq, wq); | |
89bddce5 | 258 | |
1da177e4 LT |
259 | ei->socket.state = SS_UNCONNECTED; |
260 | ei->socket.flags = 0; | |
261 | ei->socket.ops = NULL; | |
262 | ei->socket.sk = NULL; | |
263 | ei->socket.file = NULL; | |
1da177e4 LT |
264 | |
265 | return &ei->vfs_inode; | |
266 | } | |
267 | ||
268 | static void sock_destroy_inode(struct inode *inode) | |
269 | { | |
43815482 | 270 | struct socket_alloc *ei; |
eaefd110 | 271 | struct socket_wq *wq; |
43815482 ED |
272 | |
273 | ei = container_of(inode, struct socket_alloc, vfs_inode); | |
eaefd110 | 274 | wq = rcu_dereference_protected(ei->socket.wq, 1); |
61845220 | 275 | kfree_rcu(wq, rcu); |
43815482 | 276 | kmem_cache_free(sock_inode_cachep, ei); |
1da177e4 LT |
277 | } |
278 | ||
51cc5068 | 279 | static void init_once(void *foo) |
1da177e4 | 280 | { |
89bddce5 | 281 | struct socket_alloc *ei = (struct socket_alloc *)foo; |
1da177e4 | 282 | |
a35afb83 | 283 | inode_init_once(&ei->vfs_inode); |
1da177e4 | 284 | } |
89bddce5 | 285 | |
1da177e4 LT |
286 | static int init_inodecache(void) |
287 | { | |
288 | sock_inode_cachep = kmem_cache_create("sock_inode_cache", | |
89bddce5 SH |
289 | sizeof(struct socket_alloc), |
290 | 0, | |
291 | (SLAB_HWCACHE_ALIGN | | |
292 | SLAB_RECLAIM_ACCOUNT | | |
293 | SLAB_MEM_SPREAD), | |
20c2df83 | 294 | init_once); |
1da177e4 LT |
295 | if (sock_inode_cachep == NULL) |
296 | return -ENOMEM; | |
297 | return 0; | |
298 | } | |
299 | ||
b87221de | 300 | static const struct super_operations sockfs_ops = { |
c6d409cf ED |
301 | .alloc_inode = sock_alloc_inode, |
302 | .destroy_inode = sock_destroy_inode, | |
303 | .statfs = simple_statfs, | |
1da177e4 LT |
304 | }; |
305 | ||
c23fbb6b ED |
306 | /* |
307 | * sockfs_dname() is called from d_path(). | |
308 | */ | |
309 | static char *sockfs_dname(struct dentry *dentry, char *buffer, int buflen) | |
310 | { | |
311 | return dynamic_dname(dentry, buffer, buflen, "socket:[%lu]", | |
312 | dentry->d_inode->i_ino); | |
313 | } | |
314 | ||
3ba13d17 | 315 | static const struct dentry_operations sockfs_dentry_operations = { |
c23fbb6b | 316 | .d_dname = sockfs_dname, |
1da177e4 LT |
317 | }; |
318 | ||
c74a1cbb AV |
319 | static struct dentry *sockfs_mount(struct file_system_type *fs_type, |
320 | int flags, const char *dev_name, void *data) | |
321 | { | |
322 | return mount_pseudo(fs_type, "socket:", &sockfs_ops, | |
323 | &sockfs_dentry_operations, SOCKFS_MAGIC); | |
324 | } | |
325 | ||
326 | static struct vfsmount *sock_mnt __read_mostly; | |
327 | ||
328 | static struct file_system_type sock_fs_type = { | |
329 | .name = "sockfs", | |
330 | .mount = sockfs_mount, | |
331 | .kill_sb = kill_anon_super, | |
332 | }; | |
333 | ||
1da177e4 LT |
334 | /* |
335 | * Obtains the first available file descriptor and sets it up for use. | |
336 | * | |
39d8c1b6 DM |
337 | * These functions create file structures and maps them to fd space |
338 | * of the current process. On success it returns file descriptor | |
1da177e4 LT |
339 | * and file struct implicitly stored in sock->file. |
340 | * Note that another thread may close file descriptor before we return | |
341 | * from this function. We use the fact that now we do not refer | |
342 | * to socket after mapping. If one day we will need it, this | |
343 | * function will increment ref. count on file by 1. | |
344 | * | |
345 | * In any case returned fd MAY BE not valid! | |
346 | * This race condition is unavoidable | |
347 | * with shared fd spaces, we cannot solve it inside kernel, | |
348 | * but we take care of internal coherence yet. | |
349 | */ | |
350 | ||
aab174f0 | 351 | struct file *sock_alloc_file(struct socket *sock, int flags, const char *dname) |
1da177e4 | 352 | { |
7cbe66b6 | 353 | struct qstr name = { .name = "" }; |
2c48b9c4 | 354 | struct path path; |
7cbe66b6 | 355 | struct file *file; |
1da177e4 | 356 | |
600e1779 MY |
357 | if (dname) { |
358 | name.name = dname; | |
359 | name.len = strlen(name.name); | |
360 | } else if (sock->sk) { | |
361 | name.name = sock->sk->sk_prot_creator->name; | |
362 | name.len = strlen(name.name); | |
363 | } | |
4b936885 | 364 | path.dentry = d_alloc_pseudo(sock_mnt->mnt_sb, &name); |
28407630 AV |
365 | if (unlikely(!path.dentry)) |
366 | return ERR_PTR(-ENOMEM); | |
2c48b9c4 | 367 | path.mnt = mntget(sock_mnt); |
39d8c1b6 | 368 | |
2c48b9c4 | 369 | d_instantiate(path.dentry, SOCK_INODE(sock)); |
cc3808f8 | 370 | SOCK_INODE(sock)->i_fop = &socket_file_ops; |
39d8c1b6 | 371 | |
2c48b9c4 | 372 | file = alloc_file(&path, FMODE_READ | FMODE_WRITE, |
ce8d2cdf | 373 | &socket_file_ops); |
39b65252 | 374 | if (unlikely(IS_ERR(file))) { |
cc3808f8 | 375 | /* drop dentry, keep inode */ |
7de9c6ee | 376 | ihold(path.dentry->d_inode); |
2c48b9c4 | 377 | path_put(&path); |
39b65252 | 378 | return file; |
cc3808f8 AV |
379 | } |
380 | ||
381 | sock->file = file; | |
77d27200 | 382 | file->f_flags = O_RDWR | (flags & O_NONBLOCK); |
39d8c1b6 | 383 | file->private_data = sock; |
28407630 | 384 | return file; |
39d8c1b6 | 385 | } |
56b31d1c | 386 | EXPORT_SYMBOL(sock_alloc_file); |
39d8c1b6 | 387 | |
56b31d1c | 388 | static int sock_map_fd(struct socket *sock, int flags) |
39d8c1b6 DM |
389 | { |
390 | struct file *newfile; | |
28407630 AV |
391 | int fd = get_unused_fd_flags(flags); |
392 | if (unlikely(fd < 0)) | |
393 | return fd; | |
39d8c1b6 | 394 | |
aab174f0 | 395 | newfile = sock_alloc_file(sock, flags, NULL); |
28407630 | 396 | if (likely(!IS_ERR(newfile))) { |
39d8c1b6 | 397 | fd_install(fd, newfile); |
28407630 AV |
398 | return fd; |
399 | } | |
7cbe66b6 | 400 | |
28407630 AV |
401 | put_unused_fd(fd); |
402 | return PTR_ERR(newfile); | |
1da177e4 LT |
403 | } |
404 | ||
406a3c63 | 405 | struct socket *sock_from_file(struct file *file, int *err) |
6cb153ca | 406 | { |
6cb153ca BL |
407 | if (file->f_op == &socket_file_ops) |
408 | return file->private_data; /* set in sock_map_fd */ | |
409 | ||
23bb80d2 ED |
410 | *err = -ENOTSOCK; |
411 | return NULL; | |
6cb153ca | 412 | } |
406a3c63 | 413 | EXPORT_SYMBOL(sock_from_file); |
6cb153ca | 414 | |
1da177e4 | 415 | /** |
c6d409cf | 416 | * sockfd_lookup - Go from a file number to its socket slot |
1da177e4 LT |
417 | * @fd: file handle |
418 | * @err: pointer to an error code return | |
419 | * | |
420 | * The file handle passed in is locked and the socket it is bound | |
421 | * too is returned. If an error occurs the err pointer is overwritten | |
422 | * with a negative errno code and NULL is returned. The function checks | |
423 | * for both invalid handles and passing a handle which is not a socket. | |
424 | * | |
425 | * On a success the socket object pointer is returned. | |
426 | */ | |
427 | ||
428 | struct socket *sockfd_lookup(int fd, int *err) | |
429 | { | |
430 | struct file *file; | |
1da177e4 LT |
431 | struct socket *sock; |
432 | ||
89bddce5 SH |
433 | file = fget(fd); |
434 | if (!file) { | |
1da177e4 LT |
435 | *err = -EBADF; |
436 | return NULL; | |
437 | } | |
89bddce5 | 438 | |
6cb153ca BL |
439 | sock = sock_from_file(file, err); |
440 | if (!sock) | |
1da177e4 | 441 | fput(file); |
6cb153ca BL |
442 | return sock; |
443 | } | |
c6d409cf | 444 | EXPORT_SYMBOL(sockfd_lookup); |
1da177e4 | 445 | |
6cb153ca BL |
446 | static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed) |
447 | { | |
448 | struct file *file; | |
449 | struct socket *sock; | |
450 | ||
3672558c | 451 | *err = -EBADF; |
6cb153ca BL |
452 | file = fget_light(fd, fput_needed); |
453 | if (file) { | |
454 | sock = sock_from_file(file, err); | |
455 | if (sock) | |
456 | return sock; | |
457 | fput_light(file, *fput_needed); | |
1da177e4 | 458 | } |
6cb153ca | 459 | return NULL; |
1da177e4 LT |
460 | } |
461 | ||
600e1779 MY |
462 | #define XATTR_SOCKPROTONAME_SUFFIX "sockprotoname" |
463 | #define XATTR_NAME_SOCKPROTONAME (XATTR_SYSTEM_PREFIX XATTR_SOCKPROTONAME_SUFFIX) | |
464 | #define XATTR_NAME_SOCKPROTONAME_LEN (sizeof(XATTR_NAME_SOCKPROTONAME)-1) | |
465 | static ssize_t sockfs_getxattr(struct dentry *dentry, | |
466 | const char *name, void *value, size_t size) | |
467 | { | |
468 | const char *proto_name; | |
469 | size_t proto_size; | |
470 | int error; | |
471 | ||
472 | error = -ENODATA; | |
473 | if (!strncmp(name, XATTR_NAME_SOCKPROTONAME, XATTR_NAME_SOCKPROTONAME_LEN)) { | |
474 | proto_name = dentry->d_name.name; | |
475 | proto_size = strlen(proto_name); | |
476 | ||
477 | if (value) { | |
478 | error = -ERANGE; | |
479 | if (proto_size + 1 > size) | |
480 | goto out; | |
481 | ||
482 | strncpy(value, proto_name, proto_size + 1); | |
483 | } | |
484 | error = proto_size + 1; | |
485 | } | |
486 | ||
487 | out: | |
488 | return error; | |
489 | } | |
490 | ||
491 | static ssize_t sockfs_listxattr(struct dentry *dentry, char *buffer, | |
492 | size_t size) | |
493 | { | |
494 | ssize_t len; | |
495 | ssize_t used = 0; | |
496 | ||
497 | len = security_inode_listsecurity(dentry->d_inode, buffer, size); | |
498 | if (len < 0) | |
499 | return len; | |
500 | used += len; | |
501 | if (buffer) { | |
502 | if (size < used) | |
503 | return -ERANGE; | |
504 | buffer += len; | |
505 | } | |
506 | ||
507 | len = (XATTR_NAME_SOCKPROTONAME_LEN + 1); | |
508 | used += len; | |
509 | if (buffer) { | |
510 | if (size < used) | |
511 | return -ERANGE; | |
512 | memcpy(buffer, XATTR_NAME_SOCKPROTONAME, len); | |
513 | buffer += len; | |
514 | } | |
515 | ||
516 | return used; | |
517 | } | |
518 | ||
519 | static const struct inode_operations sockfs_inode_ops = { | |
520 | .getxattr = sockfs_getxattr, | |
521 | .listxattr = sockfs_listxattr, | |
522 | }; | |
523 | ||
1da177e4 LT |
524 | /** |
525 | * sock_alloc - allocate a socket | |
89bddce5 | 526 | * |
1da177e4 LT |
527 | * Allocate a new inode and socket object. The two are bound together |
528 | * and initialised. The socket is then returned. If we are out of inodes | |
529 | * NULL is returned. | |
530 | */ | |
531 | ||
532 | static struct socket *sock_alloc(void) | |
533 | { | |
89bddce5 SH |
534 | struct inode *inode; |
535 | struct socket *sock; | |
1da177e4 | 536 | |
a209dfc7 | 537 | inode = new_inode_pseudo(sock_mnt->mnt_sb); |
1da177e4 LT |
538 | if (!inode) |
539 | return NULL; | |
540 | ||
541 | sock = SOCKET_I(inode); | |
542 | ||
29a020d3 | 543 | kmemcheck_annotate_bitfield(sock, type); |
85fe4025 | 544 | inode->i_ino = get_next_ino(); |
89bddce5 | 545 | inode->i_mode = S_IFSOCK | S_IRWXUGO; |
8192b0c4 DH |
546 | inode->i_uid = current_fsuid(); |
547 | inode->i_gid = current_fsgid(); | |
600e1779 | 548 | inode->i_op = &sockfs_inode_ops; |
1da177e4 | 549 | |
19e8d69c | 550 | this_cpu_add(sockets_in_use, 1); |
1da177e4 LT |
551 | return sock; |
552 | } | |
553 | ||
554 | /* | |
555 | * In theory you can't get an open on this inode, but /proc provides | |
556 | * a back door. Remember to keep it shut otherwise you'll let the | |
557 | * creepy crawlies in. | |
558 | */ | |
89bddce5 | 559 | |
1da177e4 LT |
560 | static int sock_no_open(struct inode *irrelevant, struct file *dontcare) |
561 | { | |
562 | return -ENXIO; | |
563 | } | |
564 | ||
4b6f5d20 | 565 | const struct file_operations bad_sock_fops = { |
1da177e4 LT |
566 | .owner = THIS_MODULE, |
567 | .open = sock_no_open, | |
6038f373 | 568 | .llseek = noop_llseek, |
1da177e4 LT |
569 | }; |
570 | ||
571 | /** | |
572 | * sock_release - close a socket | |
573 | * @sock: socket to close | |
574 | * | |
575 | * The socket is released from the protocol stack if it has a release | |
576 | * callback, and the inode is then released if the socket is bound to | |
89bddce5 | 577 | * an inode not a file. |
1da177e4 | 578 | */ |
89bddce5 | 579 | |
1da177e4 LT |
580 | void sock_release(struct socket *sock) |
581 | { | |
582 | if (sock->ops) { | |
583 | struct module *owner = sock->ops->owner; | |
584 | ||
585 | sock->ops->release(sock); | |
586 | sock->ops = NULL; | |
587 | module_put(owner); | |
588 | } | |
589 | ||
eaefd110 | 590 | if (rcu_dereference_protected(sock->wq, 1)->fasync_list) |
6fa3eb70 | 591 | printk(KERN_ERR "[mtk_net][socket]sock_release: fasync list not empty!\n"); |
1da177e4 | 592 | |
b09e786b MP |
593 | if (test_bit(SOCK_EXTERNALLY_ALLOCATED, &sock->flags)) |
594 | return; | |
595 | ||
19e8d69c | 596 | this_cpu_sub(sockets_in_use, 1); |
1da177e4 LT |
597 | if (!sock->file) { |
598 | iput(SOCK_INODE(sock)); | |
599 | return; | |
600 | } | |
89bddce5 | 601 | sock->file = NULL; |
1da177e4 | 602 | } |
c6d409cf | 603 | EXPORT_SYMBOL(sock_release); |
1da177e4 | 604 | |
bf84a010 | 605 | void sock_tx_timestamp(struct sock *sk, __u8 *tx_flags) |
20d49473 | 606 | { |
2244d07b | 607 | *tx_flags = 0; |
20d49473 | 608 | if (sock_flag(sk, SOCK_TIMESTAMPING_TX_HARDWARE)) |
2244d07b | 609 | *tx_flags |= SKBTX_HW_TSTAMP; |
20d49473 | 610 | if (sock_flag(sk, SOCK_TIMESTAMPING_TX_SOFTWARE)) |
2244d07b | 611 | *tx_flags |= SKBTX_SW_TSTAMP; |
6e3e939f JB |
612 | if (sock_flag(sk, SOCK_WIFI_STATUS)) |
613 | *tx_flags |= SKBTX_WIFI_STATUS; | |
20d49473 PO |
614 | } |
615 | EXPORT_SYMBOL(sock_tx_timestamp); | |
616 | ||
228e548e AB |
617 | static inline int __sock_sendmsg_nosec(struct kiocb *iocb, struct socket *sock, |
618 | struct msghdr *msg, size_t size) | |
1da177e4 LT |
619 | { |
620 | struct sock_iocb *si = kiocb_to_siocb(iocb); | |
1da177e4 LT |
621 | |
622 | si->sock = sock; | |
623 | si->scm = NULL; | |
624 | si->msg = msg; | |
625 | si->size = size; | |
626 | ||
1da177e4 LT |
627 | return sock->ops->sendmsg(iocb, sock, msg, size); |
628 | } | |
629 | ||
228e548e AB |
630 | static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
631 | struct msghdr *msg, size_t size) | |
632 | { | |
633 | int err = security_socket_sendmsg(sock, msg, size); | |
634 | ||
635 | return err ?: __sock_sendmsg_nosec(iocb, sock, msg, size); | |
636 | } | |
637 | ||
1da177e4 LT |
638 | int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size) |
639 | { | |
640 | struct kiocb iocb; | |
641 | struct sock_iocb siocb; | |
642 | int ret; | |
643 | ||
644 | init_sync_kiocb(&iocb, NULL); | |
645 | iocb.private = &siocb; | |
646 | ret = __sock_sendmsg(&iocb, sock, msg, size); | |
647 | if (-EIOCBQUEUED == ret) | |
648 | ret = wait_on_sync_kiocb(&iocb); | |
649 | return ret; | |
650 | } | |
c6d409cf | 651 | EXPORT_SYMBOL(sock_sendmsg); |
1da177e4 | 652 | |
894dc24c | 653 | static int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg, size_t size) |
228e548e AB |
654 | { |
655 | struct kiocb iocb; | |
656 | struct sock_iocb siocb; | |
657 | int ret; | |
658 | ||
659 | init_sync_kiocb(&iocb, NULL); | |
660 | iocb.private = &siocb; | |
661 | ret = __sock_sendmsg_nosec(&iocb, sock, msg, size); | |
662 | if (-EIOCBQUEUED == ret) | |
663 | ret = wait_on_sync_kiocb(&iocb); | |
664 | return ret; | |
665 | } | |
666 | ||
1da177e4 LT |
667 | int kernel_sendmsg(struct socket *sock, struct msghdr *msg, |
668 | struct kvec *vec, size_t num, size_t size) | |
669 | { | |
670 | mm_segment_t oldfs = get_fs(); | |
671 | int result; | |
672 | ||
673 | set_fs(KERNEL_DS); | |
674 | /* | |
675 | * the following is safe, since for compiler definitions of kvec and | |
676 | * iovec are identical, yielding the same in-core layout and alignment | |
677 | */ | |
89bddce5 | 678 | msg->msg_iov = (struct iovec *)vec; |
1da177e4 LT |
679 | msg->msg_iovlen = num; |
680 | result = sock_sendmsg(sock, msg, size); | |
681 | set_fs(oldfs); | |
682 | return result; | |
683 | } | |
c6d409cf | 684 | EXPORT_SYMBOL(kernel_sendmsg); |
1da177e4 | 685 | |
92f37fd2 ED |
686 | /* |
687 | * called from sock_recv_timestamp() if sock_flag(sk, SOCK_RCVTSTAMP) | |
688 | */ | |
689 | void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk, | |
690 | struct sk_buff *skb) | |
691 | { | |
20d49473 PO |
692 | int need_software_tstamp = sock_flag(sk, SOCK_RCVTSTAMP); |
693 | struct timespec ts[3]; | |
694 | int empty = 1; | |
695 | struct skb_shared_hwtstamps *shhwtstamps = | |
696 | skb_hwtstamps(skb); | |
697 | ||
698 | /* Race occurred between timestamp enabling and packet | |
699 | receiving. Fill in the current time for now. */ | |
700 | if (need_software_tstamp && skb->tstamp.tv64 == 0) | |
701 | __net_timestamp(skb); | |
702 | ||
703 | if (need_software_tstamp) { | |
704 | if (!sock_flag(sk, SOCK_RCVTSTAMPNS)) { | |
705 | struct timeval tv; | |
706 | skb_get_timestamp(skb, &tv); | |
707 | put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMP, | |
708 | sizeof(tv), &tv); | |
709 | } else { | |
842509b8 | 710 | skb_get_timestampns(skb, &ts[0]); |
20d49473 | 711 | put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMPNS, |
842509b8 | 712 | sizeof(ts[0]), &ts[0]); |
20d49473 PO |
713 | } |
714 | } | |
715 | ||
716 | ||
717 | memset(ts, 0, sizeof(ts)); | |
6e94d1ef DB |
718 | if (sock_flag(sk, SOCK_TIMESTAMPING_SOFTWARE) && |
719 | ktime_to_timespec_cond(skb->tstamp, ts + 0)) | |
20d49473 | 720 | empty = 0; |
20d49473 PO |
721 | if (shhwtstamps) { |
722 | if (sock_flag(sk, SOCK_TIMESTAMPING_SYS_HARDWARE) && | |
6e94d1ef | 723 | ktime_to_timespec_cond(shhwtstamps->syststamp, ts + 1)) |
20d49473 PO |
724 | empty = 0; |
725 | if (sock_flag(sk, SOCK_TIMESTAMPING_RAW_HARDWARE) && | |
6e94d1ef | 726 | ktime_to_timespec_cond(shhwtstamps->hwtstamp, ts + 2)) |
20d49473 | 727 | empty = 0; |
92f37fd2 | 728 | } |
20d49473 PO |
729 | if (!empty) |
730 | put_cmsg(msg, SOL_SOCKET, | |
731 | SCM_TIMESTAMPING, sizeof(ts), &ts); | |
92f37fd2 | 732 | } |
7c81fd8b ACM |
733 | EXPORT_SYMBOL_GPL(__sock_recv_timestamp); |
734 | ||
6e3e939f JB |
735 | void __sock_recv_wifi_status(struct msghdr *msg, struct sock *sk, |
736 | struct sk_buff *skb) | |
737 | { | |
738 | int ack; | |
739 | ||
740 | if (!sock_flag(sk, SOCK_WIFI_STATUS)) | |
741 | return; | |
742 | if (!skb->wifi_acked_valid) | |
743 | return; | |
744 | ||
745 | ack = skb->wifi_acked; | |
746 | ||
747 | put_cmsg(msg, SOL_SOCKET, SCM_WIFI_STATUS, sizeof(ack), &ack); | |
748 | } | |
749 | EXPORT_SYMBOL_GPL(__sock_recv_wifi_status); | |
750 | ||
11165f14 | 751 | static inline void sock_recv_drops(struct msghdr *msg, struct sock *sk, |
752 | struct sk_buff *skb) | |
3b885787 NH |
753 | { |
754 | if (sock_flag(sk, SOCK_RXQ_OVFL) && skb && skb->dropcount) | |
755 | put_cmsg(msg, SOL_SOCKET, SO_RXQ_OVFL, | |
756 | sizeof(__u32), &skb->dropcount); | |
757 | } | |
758 | ||
767dd033 | 759 | void __sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk, |
3b885787 NH |
760 | struct sk_buff *skb) |
761 | { | |
762 | sock_recv_timestamp(msg, sk, skb); | |
763 | sock_recv_drops(msg, sk, skb); | |
764 | } | |
767dd033 | 765 | EXPORT_SYMBOL_GPL(__sock_recv_ts_and_drops); |
3b885787 | 766 | |
a2e27255 ACM |
767 | static inline int __sock_recvmsg_nosec(struct kiocb *iocb, struct socket *sock, |
768 | struct msghdr *msg, size_t size, int flags) | |
1da177e4 | 769 | { |
1da177e4 LT |
770 | struct sock_iocb *si = kiocb_to_siocb(iocb); |
771 | ||
772 | si->sock = sock; | |
773 | si->scm = NULL; | |
774 | si->msg = msg; | |
775 | si->size = size; | |
776 | si->flags = flags; | |
777 | ||
1da177e4 LT |
778 | return sock->ops->recvmsg(iocb, sock, msg, size, flags); |
779 | } | |
780 | ||
a2e27255 ACM |
781 | static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock, |
782 | struct msghdr *msg, size_t size, int flags) | |
783 | { | |
784 | int err = security_socket_recvmsg(sock, msg, size, flags); | |
785 | ||
786 | return err ?: __sock_recvmsg_nosec(iocb, sock, msg, size, flags); | |
787 | } | |
788 | ||
89bddce5 | 789 | int sock_recvmsg(struct socket *sock, struct msghdr *msg, |
1da177e4 LT |
790 | size_t size, int flags) |
791 | { | |
792 | struct kiocb iocb; | |
793 | struct sock_iocb siocb; | |
794 | int ret; | |
795 | ||
89bddce5 | 796 | init_sync_kiocb(&iocb, NULL); |
1da177e4 LT |
797 | iocb.private = &siocb; |
798 | ret = __sock_recvmsg(&iocb, sock, msg, size, flags); | |
799 | if (-EIOCBQUEUED == ret) | |
800 | ret = wait_on_sync_kiocb(&iocb); | |
801 | return ret; | |
802 | } | |
c6d409cf | 803 | EXPORT_SYMBOL(sock_recvmsg); |
1da177e4 | 804 | |
a2e27255 ACM |
805 | static int sock_recvmsg_nosec(struct socket *sock, struct msghdr *msg, |
806 | size_t size, int flags) | |
807 | { | |
808 | struct kiocb iocb; | |
809 | struct sock_iocb siocb; | |
810 | int ret; | |
811 | ||
812 | init_sync_kiocb(&iocb, NULL); | |
813 | iocb.private = &siocb; | |
814 | ret = __sock_recvmsg_nosec(&iocb, sock, msg, size, flags); | |
815 | if (-EIOCBQUEUED == ret) | |
816 | ret = wait_on_sync_kiocb(&iocb); | |
817 | return ret; | |
818 | } | |
819 | ||
c1249c0a ML |
820 | /** |
821 | * kernel_recvmsg - Receive a message from a socket (kernel space) | |
822 | * @sock: The socket to receive the message from | |
823 | * @msg: Received message | |
824 | * @vec: Input s/g array for message data | |
825 | * @num: Size of input s/g array | |
826 | * @size: Number of bytes to read | |
827 | * @flags: Message flags (MSG_DONTWAIT, etc...) | |
828 | * | |
829 | * On return the msg structure contains the scatter/gather array passed in the | |
830 | * vec argument. The array is modified so that it consists of the unfilled | |
831 | * portion of the original array. | |
832 | * | |
833 | * The returned value is the total number of bytes received, or an error. | |
834 | */ | |
89bddce5 SH |
835 | int kernel_recvmsg(struct socket *sock, struct msghdr *msg, |
836 | struct kvec *vec, size_t num, size_t size, int flags) | |
1da177e4 LT |
837 | { |
838 | mm_segment_t oldfs = get_fs(); | |
839 | int result; | |
840 | ||
841 | set_fs(KERNEL_DS); | |
842 | /* | |
843 | * the following is safe, since for compiler definitions of kvec and | |
844 | * iovec are identical, yielding the same in-core layout and alignment | |
845 | */ | |
89bddce5 | 846 | msg->msg_iov = (struct iovec *)vec, msg->msg_iovlen = num; |
1da177e4 LT |
847 | result = sock_recvmsg(sock, msg, size, flags); |
848 | set_fs(oldfs); | |
849 | return result; | |
850 | } | |
c6d409cf | 851 | EXPORT_SYMBOL(kernel_recvmsg); |
1da177e4 LT |
852 | |
853 | static void sock_aio_dtor(struct kiocb *iocb) | |
854 | { | |
855 | kfree(iocb->private); | |
856 | } | |
857 | ||
ce1d4d3e CH |
858 | static ssize_t sock_sendpage(struct file *file, struct page *page, |
859 | int offset, size_t size, loff_t *ppos, int more) | |
1da177e4 | 860 | { |
1da177e4 LT |
861 | struct socket *sock; |
862 | int flags; | |
863 | ||
ce1d4d3e CH |
864 | sock = file->private_data; |
865 | ||
35f9c09f ED |
866 | flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0; |
867 | /* more is a combination of MSG_MORE and MSG_SENDPAGE_NOTLAST */ | |
868 | flags |= more; | |
ce1d4d3e | 869 | |
e6949583 | 870 | return kernel_sendpage(sock, page, offset, size, flags); |
ce1d4d3e | 871 | } |
1da177e4 | 872 | |
9c55e01c | 873 | static ssize_t sock_splice_read(struct file *file, loff_t *ppos, |
c6d409cf | 874 | struct pipe_inode_info *pipe, size_t len, |
9c55e01c JA |
875 | unsigned int flags) |
876 | { | |
877 | struct socket *sock = file->private_data; | |
878 | ||
997b37da RDC |
879 | if (unlikely(!sock->ops->splice_read)) |
880 | return -EINVAL; | |
881 | ||
9c55e01c JA |
882 | return sock->ops->splice_read(sock, ppos, pipe, len, flags); |
883 | } | |
884 | ||
ce1d4d3e | 885 | static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb, |
89bddce5 | 886 | struct sock_iocb *siocb) |
ce1d4d3e CH |
887 | { |
888 | if (!is_sync_kiocb(iocb)) { | |
889 | siocb = kmalloc(sizeof(*siocb), GFP_KERNEL); | |
890 | if (!siocb) | |
891 | return NULL; | |
1da177e4 LT |
892 | iocb->ki_dtor = sock_aio_dtor; |
893 | } | |
1da177e4 | 894 | |
ce1d4d3e | 895 | siocb->kiocb = iocb; |
ce1d4d3e CH |
896 | iocb->private = siocb; |
897 | return siocb; | |
1da177e4 LT |
898 | } |
899 | ||
ce1d4d3e | 900 | static ssize_t do_sock_read(struct msghdr *msg, struct kiocb *iocb, |
027445c3 BP |
901 | struct file *file, const struct iovec *iov, |
902 | unsigned long nr_segs) | |
ce1d4d3e CH |
903 | { |
904 | struct socket *sock = file->private_data; | |
905 | size_t size = 0; | |
906 | int i; | |
1da177e4 | 907 | |
89bddce5 SH |
908 | for (i = 0; i < nr_segs; i++) |
909 | size += iov[i].iov_len; | |
1da177e4 | 910 | |
ce1d4d3e CH |
911 | msg->msg_name = NULL; |
912 | msg->msg_namelen = 0; | |
913 | msg->msg_control = NULL; | |
914 | msg->msg_controllen = 0; | |
89bddce5 | 915 | msg->msg_iov = (struct iovec *)iov; |
ce1d4d3e CH |
916 | msg->msg_iovlen = nr_segs; |
917 | msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0; | |
918 | ||
919 | return __sock_recvmsg(iocb, sock, msg, size, msg->msg_flags); | |
920 | } | |
921 | ||
027445c3 BP |
922 | static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov, |
923 | unsigned long nr_segs, loff_t pos) | |
ce1d4d3e CH |
924 | { |
925 | struct sock_iocb siocb, *x; | |
926 | ||
1da177e4 LT |
927 | if (pos != 0) |
928 | return -ESPIPE; | |
027445c3 BP |
929 | |
930 | if (iocb->ki_left == 0) /* Match SYS5 behaviour */ | |
1da177e4 LT |
931 | return 0; |
932 | ||
027445c3 BP |
933 | |
934 | x = alloc_sock_iocb(iocb, &siocb); | |
ce1d4d3e CH |
935 | if (!x) |
936 | return -ENOMEM; | |
027445c3 | 937 | return do_sock_read(&x->async_msg, iocb, iocb->ki_filp, iov, nr_segs); |
1da177e4 LT |
938 | } |
939 | ||
ce1d4d3e | 940 | static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb, |
027445c3 BP |
941 | struct file *file, const struct iovec *iov, |
942 | unsigned long nr_segs) | |
1da177e4 | 943 | { |
ce1d4d3e CH |
944 | struct socket *sock = file->private_data; |
945 | size_t size = 0; | |
946 | int i; | |
1da177e4 | 947 | |
89bddce5 SH |
948 | for (i = 0; i < nr_segs; i++) |
949 | size += iov[i].iov_len; | |
1da177e4 | 950 | |
ce1d4d3e CH |
951 | msg->msg_name = NULL; |
952 | msg->msg_namelen = 0; | |
953 | msg->msg_control = NULL; | |
954 | msg->msg_controllen = 0; | |
89bddce5 | 955 | msg->msg_iov = (struct iovec *)iov; |
ce1d4d3e CH |
956 | msg->msg_iovlen = nr_segs; |
957 | msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0; | |
958 | if (sock->type == SOCK_SEQPACKET) | |
959 | msg->msg_flags |= MSG_EOR; | |
1da177e4 | 960 | |
ce1d4d3e | 961 | return __sock_sendmsg(iocb, sock, msg, size); |
1da177e4 LT |
962 | } |
963 | ||
027445c3 BP |
964 | static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov, |
965 | unsigned long nr_segs, loff_t pos) | |
ce1d4d3e CH |
966 | { |
967 | struct sock_iocb siocb, *x; | |
1da177e4 | 968 | |
ce1d4d3e CH |
969 | if (pos != 0) |
970 | return -ESPIPE; | |
027445c3 | 971 | |
027445c3 | 972 | x = alloc_sock_iocb(iocb, &siocb); |
ce1d4d3e CH |
973 | if (!x) |
974 | return -ENOMEM; | |
1da177e4 | 975 | |
027445c3 | 976 | return do_sock_write(&x->async_msg, iocb, iocb->ki_filp, iov, nr_segs); |
1da177e4 LT |
977 | } |
978 | ||
1da177e4 LT |
979 | /* |
980 | * Atomic setting of ioctl hooks to avoid race | |
981 | * with module unload. | |
982 | */ | |
983 | ||
4a3e2f71 | 984 | static DEFINE_MUTEX(br_ioctl_mutex); |
c6d409cf | 985 | static int (*br_ioctl_hook) (struct net *, unsigned int cmd, void __user *arg); |
1da177e4 | 986 | |
881d966b | 987 | void brioctl_set(int (*hook) (struct net *, unsigned int, void __user *)) |
1da177e4 | 988 | { |
4a3e2f71 | 989 | mutex_lock(&br_ioctl_mutex); |
1da177e4 | 990 | br_ioctl_hook = hook; |
4a3e2f71 | 991 | mutex_unlock(&br_ioctl_mutex); |
1da177e4 LT |
992 | } |
993 | EXPORT_SYMBOL(brioctl_set); | |
994 | ||
4a3e2f71 | 995 | static DEFINE_MUTEX(vlan_ioctl_mutex); |
881d966b | 996 | static int (*vlan_ioctl_hook) (struct net *, void __user *arg); |
1da177e4 | 997 | |
881d966b | 998 | void vlan_ioctl_set(int (*hook) (struct net *, void __user *)) |
1da177e4 | 999 | { |
4a3e2f71 | 1000 | mutex_lock(&vlan_ioctl_mutex); |
1da177e4 | 1001 | vlan_ioctl_hook = hook; |
4a3e2f71 | 1002 | mutex_unlock(&vlan_ioctl_mutex); |
1da177e4 LT |
1003 | } |
1004 | EXPORT_SYMBOL(vlan_ioctl_set); | |
1005 | ||
4a3e2f71 | 1006 | static DEFINE_MUTEX(dlci_ioctl_mutex); |
89bddce5 | 1007 | static int (*dlci_ioctl_hook) (unsigned int, void __user *); |
1da177e4 | 1008 | |
89bddce5 | 1009 | void dlci_ioctl_set(int (*hook) (unsigned int, void __user *)) |
1da177e4 | 1010 | { |
4a3e2f71 | 1011 | mutex_lock(&dlci_ioctl_mutex); |
1da177e4 | 1012 | dlci_ioctl_hook = hook; |
4a3e2f71 | 1013 | mutex_unlock(&dlci_ioctl_mutex); |
1da177e4 LT |
1014 | } |
1015 | EXPORT_SYMBOL(dlci_ioctl_set); | |
1016 | ||
6b96018b AB |
1017 | static long sock_do_ioctl(struct net *net, struct socket *sock, |
1018 | unsigned int cmd, unsigned long arg) | |
1019 | { | |
1020 | int err; | |
1021 | void __user *argp = (void __user *)arg; | |
1022 | ||
1023 | err = sock->ops->ioctl(sock, cmd, arg); | |
1024 | ||
1025 | /* | |
1026 | * If this ioctl is unknown try to hand it down | |
1027 | * to the NIC driver. | |
1028 | */ | |
1029 | if (err == -ENOIOCTLCMD) | |
1030 | err = dev_ioctl(net, cmd, argp); | |
1031 | ||
1032 | return err; | |
1033 | } | |
1034 | ||
1da177e4 LT |
1035 | /* |
1036 | * With an ioctl, arg may well be a user mode pointer, but we don't know | |
1037 | * what to do with it - that's up to the protocol still. | |
1038 | */ | |
1039 | ||
1040 | static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg) | |
1041 | { | |
1042 | struct socket *sock; | |
881d966b | 1043 | struct sock *sk; |
1da177e4 LT |
1044 | void __user *argp = (void __user *)arg; |
1045 | int pid, err; | |
881d966b | 1046 | struct net *net; |
1da177e4 | 1047 | |
b69aee04 | 1048 | sock = file->private_data; |
881d966b | 1049 | sk = sock->sk; |
3b1e0a65 | 1050 | net = sock_net(sk); |
1da177e4 | 1051 | if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) { |
881d966b | 1052 | err = dev_ioctl(net, cmd, argp); |
1da177e4 | 1053 | } else |
3d23e349 | 1054 | #ifdef CONFIG_WEXT_CORE |
1da177e4 | 1055 | if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) { |
881d966b | 1056 | err = dev_ioctl(net, cmd, argp); |
1da177e4 | 1057 | } else |
3d23e349 | 1058 | #endif |
89bddce5 | 1059 | switch (cmd) { |
1da177e4 LT |
1060 | case FIOSETOWN: |
1061 | case SIOCSPGRP: | |
1062 | err = -EFAULT; | |
1063 | if (get_user(pid, (int __user *)argp)) | |
1064 | break; | |
1065 | err = f_setown(sock->file, pid, 1); | |
1066 | break; | |
1067 | case FIOGETOWN: | |
1068 | case SIOCGPGRP: | |
609d7fa9 | 1069 | err = put_user(f_getown(sock->file), |
89bddce5 | 1070 | (int __user *)argp); |
1da177e4 LT |
1071 | break; |
1072 | case SIOCGIFBR: | |
1073 | case SIOCSIFBR: | |
1074 | case SIOCBRADDBR: | |
1075 | case SIOCBRDELBR: | |
1076 | err = -ENOPKG; | |
1077 | if (!br_ioctl_hook) | |
1078 | request_module("bridge"); | |
1079 | ||
4a3e2f71 | 1080 | mutex_lock(&br_ioctl_mutex); |
89bddce5 | 1081 | if (br_ioctl_hook) |
881d966b | 1082 | err = br_ioctl_hook(net, cmd, argp); |
4a3e2f71 | 1083 | mutex_unlock(&br_ioctl_mutex); |
1da177e4 LT |
1084 | break; |
1085 | case SIOCGIFVLAN: | |
1086 | case SIOCSIFVLAN: | |
1087 | err = -ENOPKG; | |
1088 | if (!vlan_ioctl_hook) | |
1089 | request_module("8021q"); | |
1090 | ||
4a3e2f71 | 1091 | mutex_lock(&vlan_ioctl_mutex); |
1da177e4 | 1092 | if (vlan_ioctl_hook) |
881d966b | 1093 | err = vlan_ioctl_hook(net, argp); |
4a3e2f71 | 1094 | mutex_unlock(&vlan_ioctl_mutex); |
1da177e4 | 1095 | break; |
1da177e4 LT |
1096 | case SIOCADDDLCI: |
1097 | case SIOCDELDLCI: | |
1098 | err = -ENOPKG; | |
1099 | if (!dlci_ioctl_hook) | |
1100 | request_module("dlci"); | |
1101 | ||
7512cbf6 PE |
1102 | mutex_lock(&dlci_ioctl_mutex); |
1103 | if (dlci_ioctl_hook) | |
1da177e4 | 1104 | err = dlci_ioctl_hook(cmd, argp); |
7512cbf6 | 1105 | mutex_unlock(&dlci_ioctl_mutex); |
1da177e4 LT |
1106 | break; |
1107 | default: | |
6b96018b | 1108 | err = sock_do_ioctl(net, sock, cmd, arg); |
1da177e4 | 1109 | break; |
89bddce5 | 1110 | } |
1da177e4 LT |
1111 | return err; |
1112 | } | |
1113 | ||
1114 | int sock_create_lite(int family, int type, int protocol, struct socket **res) | |
1115 | { | |
1116 | int err; | |
1117 | struct socket *sock = NULL; | |
89bddce5 | 1118 | |
1da177e4 LT |
1119 | err = security_socket_create(family, type, protocol, 1); |
1120 | if (err) | |
1121 | goto out; | |
1122 | ||
1123 | sock = sock_alloc(); | |
1124 | if (!sock) { | |
1125 | err = -ENOMEM; | |
1126 | goto out; | |
1127 | } | |
1128 | ||
1da177e4 | 1129 | sock->type = type; |
7420ed23 VY |
1130 | err = security_socket_post_create(sock, family, type, protocol, 1); |
1131 | if (err) | |
1132 | goto out_release; | |
1133 | ||
1da177e4 LT |
1134 | out: |
1135 | *res = sock; | |
1136 | return err; | |
7420ed23 VY |
1137 | out_release: |
1138 | sock_release(sock); | |
1139 | sock = NULL; | |
1140 | goto out; | |
1da177e4 | 1141 | } |
c6d409cf | 1142 | EXPORT_SYMBOL(sock_create_lite); |
1da177e4 LT |
1143 | |
1144 | /* No kernel lock held - perfect */ | |
89bddce5 | 1145 | static unsigned int sock_poll(struct file *file, poll_table *wait) |
1da177e4 LT |
1146 | { |
1147 | struct socket *sock; | |
1148 | ||
1149 | /* | |
89bddce5 | 1150 | * We can't return errors to poll, so it's either yes or no. |
1da177e4 | 1151 | */ |
b69aee04 | 1152 | sock = file->private_data; |
1da177e4 LT |
1153 | return sock->ops->poll(file, sock, wait); |
1154 | } | |
1155 | ||
89bddce5 | 1156 | static int sock_mmap(struct file *file, struct vm_area_struct *vma) |
1da177e4 | 1157 | { |
b69aee04 | 1158 | struct socket *sock = file->private_data; |
1da177e4 LT |
1159 | |
1160 | return sock->ops->mmap(file, sock, vma); | |
1161 | } | |
1162 | ||
20380731 | 1163 | static int sock_close(struct inode *inode, struct file *filp) |
1da177e4 | 1164 | { |
6fa3eb70 S |
1165 | /* |
1166 | * It was possible the inode is NULL we were | |
1167 | * closing an unfinished socket. | |
1168 | */ | |
1169 | ||
1170 | if (!inode) { | |
1171 | #ifdef CONFIG_MTK_NET_LOGGING | |
1172 | printk(KERN_DEBUG "[mtk_net][socket]sock_close: NULL inode\n"); | |
1173 | #endif | |
1174 | return 0; | |
1175 | } | |
1176 | #ifdef CONFIG_MTK_NET_LOGGING | |
1177 | printk(KERN_INFO "[mtk_net][socekt]socket_close[%lu] \n",inode->i_ino); | |
1178 | #endif | |
1da177e4 | 1179 | sock_release(SOCKET_I(inode)); |
6fa3eb70 | 1180 | |
1da177e4 LT |
1181 | return 0; |
1182 | } | |
1183 | ||
1184 | /* | |
1185 | * Update the socket async list | |
1186 | * | |
1187 | * Fasync_list locking strategy. | |
1188 | * | |
1189 | * 1. fasync_list is modified only under process context socket lock | |
1190 | * i.e. under semaphore. | |
1191 | * 2. fasync_list is used under read_lock(&sk->sk_callback_lock) | |
989a2979 | 1192 | * or under socket lock |
1da177e4 LT |
1193 | */ |
1194 | ||
1195 | static int sock_fasync(int fd, struct file *filp, int on) | |
1196 | { | |
989a2979 ED |
1197 | struct socket *sock = filp->private_data; |
1198 | struct sock *sk = sock->sk; | |
eaefd110 | 1199 | struct socket_wq *wq; |
1da177e4 | 1200 | |
989a2979 | 1201 | if (sk == NULL) |
1da177e4 | 1202 | return -EINVAL; |
1da177e4 LT |
1203 | |
1204 | lock_sock(sk); | |
eaefd110 ED |
1205 | wq = rcu_dereference_protected(sock->wq, sock_owned_by_user(sk)); |
1206 | fasync_helper(fd, filp, on, &wq->fasync_list); | |
1da177e4 | 1207 | |
eaefd110 | 1208 | if (!wq->fasync_list) |
989a2979 ED |
1209 | sock_reset_flag(sk, SOCK_FASYNC); |
1210 | else | |
bcdce719 | 1211 | sock_set_flag(sk, SOCK_FASYNC); |
1da177e4 | 1212 | |
989a2979 | 1213 | release_sock(sk); |
1da177e4 LT |
1214 | return 0; |
1215 | } | |
1216 | ||
43815482 | 1217 | /* This function may be called only under socket lock or callback_lock or rcu_lock */ |
1da177e4 LT |
1218 | |
1219 | int sock_wake_async(struct socket *sock, int how, int band) | |
1220 | { | |
43815482 ED |
1221 | struct socket_wq *wq; |
1222 | ||
1223 | if (!sock) | |
1224 | return -1; | |
1225 | rcu_read_lock(); | |
1226 | wq = rcu_dereference(sock->wq); | |
1227 | if (!wq || !wq->fasync_list) { | |
1228 | rcu_read_unlock(); | |
1da177e4 | 1229 | return -1; |
43815482 | 1230 | } |
89bddce5 | 1231 | switch (how) { |
8d8ad9d7 | 1232 | case SOCK_WAKE_WAITD: |
1da177e4 LT |
1233 | if (test_bit(SOCK_ASYNC_WAITDATA, &sock->flags)) |
1234 | break; | |
1235 | goto call_kill; | |
8d8ad9d7 | 1236 | case SOCK_WAKE_SPACE: |
1da177e4 LT |
1237 | if (!test_and_clear_bit(SOCK_ASYNC_NOSPACE, &sock->flags)) |
1238 | break; | |
1239 | /* fall through */ | |
8d8ad9d7 | 1240 | case SOCK_WAKE_IO: |
89bddce5 | 1241 | call_kill: |
43815482 | 1242 | kill_fasync(&wq->fasync_list, SIGIO, band); |
1da177e4 | 1243 | break; |
8d8ad9d7 | 1244 | case SOCK_WAKE_URG: |
43815482 | 1245 | kill_fasync(&wq->fasync_list, SIGURG, band); |
1da177e4 | 1246 | } |
43815482 | 1247 | rcu_read_unlock(); |
1da177e4 LT |
1248 | return 0; |
1249 | } | |
c6d409cf | 1250 | EXPORT_SYMBOL(sock_wake_async); |
1da177e4 | 1251 | |
721db93a | 1252 | int __sock_create(struct net *net, int family, int type, int protocol, |
89bddce5 | 1253 | struct socket **res, int kern) |
1da177e4 LT |
1254 | { |
1255 | int err; | |
1256 | struct socket *sock; | |
55737fda | 1257 | const struct net_proto_family *pf; |
1da177e4 LT |
1258 | |
1259 | /* | |
89bddce5 | 1260 | * Check protocol is in range |
1da177e4 LT |
1261 | */ |
1262 | if (family < 0 || family >= NPROTO) | |
1263 | return -EAFNOSUPPORT; | |
1264 | if (type < 0 || type >= SOCK_MAX) | |
1265 | return -EINVAL; | |
1266 | ||
1267 | /* Compatibility. | |
1268 | ||
1269 | This uglymoron is moved from INET layer to here to avoid | |
1270 | deadlock in module load. | |
1271 | */ | |
1272 | if (family == PF_INET && type == SOCK_PACKET) { | |
89bddce5 | 1273 | static int warned; |
1da177e4 LT |
1274 | if (!warned) { |
1275 | warned = 1; | |
6fa3eb70 S |
1276 | #ifdef CONFIG_MTK_NET_LOGGING |
1277 | printk(KERN_INFO "[mtk_net][socket]%s uses obsolete (PF_INET,SOCK_PACKET)\n", | |
89bddce5 | 1278 | current->comm); |
6fa3eb70 | 1279 | #endif |
1da177e4 LT |
1280 | } |
1281 | family = PF_PACKET; | |
1282 | } | |
1283 | ||
1284 | err = security_socket_create(family, type, protocol, kern); | |
1285 | if (err) | |
1286 | return err; | |
89bddce5 | 1287 | |
55737fda SH |
1288 | /* |
1289 | * Allocate the socket and allow the family to set things up. if | |
1290 | * the protocol is 0, the family is instructed to select an appropriate | |
1291 | * default. | |
1292 | */ | |
1293 | sock = sock_alloc(); | |
1294 | if (!sock) { | |
e87cc472 | 1295 | net_warn_ratelimited("socket: no more sockets\n"); |
55737fda SH |
1296 | return -ENFILE; /* Not exactly a match, but its the |
1297 | closest posix thing */ | |
1298 | } | |
1299 | ||
1300 | sock->type = type; | |
1301 | ||
95a5afca | 1302 | #ifdef CONFIG_MODULES |
89bddce5 SH |
1303 | /* Attempt to load a protocol module if the find failed. |
1304 | * | |
1305 | * 12/09/1996 Marcin: But! this makes REALLY only sense, if the user | |
1da177e4 LT |
1306 | * requested real, full-featured networking support upon configuration. |
1307 | * Otherwise module support will break! | |
1308 | */ | |
190683a9 | 1309 | if (rcu_access_pointer(net_families[family]) == NULL) |
89bddce5 | 1310 | request_module("net-pf-%d", family); |
1da177e4 LT |
1311 | #endif |
1312 | ||
55737fda SH |
1313 | rcu_read_lock(); |
1314 | pf = rcu_dereference(net_families[family]); | |
1315 | err = -EAFNOSUPPORT; | |
1316 | if (!pf) | |
1317 | goto out_release; | |
1da177e4 LT |
1318 | |
1319 | /* | |
1320 | * We will call the ->create function, that possibly is in a loadable | |
1321 | * module, so we have to bump that loadable module refcnt first. | |
1322 | */ | |
55737fda | 1323 | if (!try_module_get(pf->owner)) |
1da177e4 LT |
1324 | goto out_release; |
1325 | ||
55737fda SH |
1326 | /* Now protected by module ref count */ |
1327 | rcu_read_unlock(); | |
1328 | ||
3f378b68 | 1329 | err = pf->create(net, sock, protocol, kern); |
55737fda | 1330 | if (err < 0) |
1da177e4 | 1331 | goto out_module_put; |
a79af59e | 1332 | |
1da177e4 LT |
1333 | /* |
1334 | * Now to bump the refcnt of the [loadable] module that owns this | |
1335 | * socket at sock_release time we decrement its refcnt. | |
1336 | */ | |
55737fda SH |
1337 | if (!try_module_get(sock->ops->owner)) |
1338 | goto out_module_busy; | |
1339 | ||
1da177e4 LT |
1340 | /* |
1341 | * Now that we're done with the ->create function, the [loadable] | |
1342 | * module can have its refcnt decremented | |
1343 | */ | |
55737fda | 1344 | module_put(pf->owner); |
7420ed23 VY |
1345 | err = security_socket_post_create(sock, family, type, protocol, kern); |
1346 | if (err) | |
3b185525 | 1347 | goto out_sock_release; |
55737fda | 1348 | *res = sock; |
1da177e4 | 1349 | |
55737fda SH |
1350 | return 0; |
1351 | ||
1352 | out_module_busy: | |
1353 | err = -EAFNOSUPPORT; | |
1da177e4 | 1354 | out_module_put: |
55737fda SH |
1355 | sock->ops = NULL; |
1356 | module_put(pf->owner); | |
1357 | out_sock_release: | |
1da177e4 | 1358 | sock_release(sock); |
55737fda SH |
1359 | return err; |
1360 | ||
1361 | out_release: | |
1362 | rcu_read_unlock(); | |
1363 | goto out_sock_release; | |
1da177e4 | 1364 | } |
721db93a | 1365 | EXPORT_SYMBOL(__sock_create); |
1da177e4 LT |
1366 | |
1367 | int sock_create(int family, int type, int protocol, struct socket **res) | |
1368 | { | |
1b8d7ae4 | 1369 | return __sock_create(current->nsproxy->net_ns, family, type, protocol, res, 0); |
1da177e4 | 1370 | } |
c6d409cf | 1371 | EXPORT_SYMBOL(sock_create); |
1da177e4 LT |
1372 | |
1373 | int sock_create_kern(int family, int type, int protocol, struct socket **res) | |
1374 | { | |
1b8d7ae4 | 1375 | return __sock_create(&init_net, family, type, protocol, res, 1); |
1da177e4 | 1376 | } |
c6d409cf | 1377 | EXPORT_SYMBOL(sock_create_kern); |
1da177e4 | 1378 | |
3e0fa65f | 1379 | SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol) |
1da177e4 LT |
1380 | { |
1381 | int retval; | |
1382 | struct socket *sock; | |
a677a039 UD |
1383 | int flags; |
1384 | ||
e38b36f3 UD |
1385 | /* Check the SOCK_* constants for consistency. */ |
1386 | BUILD_BUG_ON(SOCK_CLOEXEC != O_CLOEXEC); | |
1387 | BUILD_BUG_ON((SOCK_MAX | SOCK_TYPE_MASK) != SOCK_TYPE_MASK); | |
1388 | BUILD_BUG_ON(SOCK_CLOEXEC & SOCK_TYPE_MASK); | |
1389 | BUILD_BUG_ON(SOCK_NONBLOCK & SOCK_TYPE_MASK); | |
1390 | ||
a677a039 | 1391 | flags = type & ~SOCK_TYPE_MASK; |
77d27200 | 1392 | if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) |
a677a039 UD |
1393 | return -EINVAL; |
1394 | type &= SOCK_TYPE_MASK; | |
1da177e4 | 1395 | |
aaca0bdc UD |
1396 | if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK)) |
1397 | flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK; | |
1398 | ||
1da177e4 LT |
1399 | retval = sock_create(family, type, protocol, &sock); |
1400 | if (retval < 0) | |
1401 | goto out; | |
1402 | ||
77d27200 | 1403 | retval = sock_map_fd(sock, flags & (O_CLOEXEC | O_NONBLOCK)); |
1da177e4 LT |
1404 | if (retval < 0) |
1405 | goto out_release; | |
1406 | ||
1407 | out: | |
1408 | /* It may be already another descriptor 8) Not kernel problem. */ | |
6fa3eb70 S |
1409 | |
1410 | if((retval >= 0)&& sock && SOCK_INODE(sock) ) | |
1411 | { | |
1412 | #ifdef CONFIG_MTK_NET_LOGGING | |
1413 | printk(KERN_INFO "[mtk_net][socket]socket_create[%lu]:fd=%d \n",SOCK_INODE(sock)->i_ino,retval); | |
1414 | #endif | |
1415 | } | |
1416 | else | |
1417 | { | |
1418 | #ifdef CONFIG_MTK_NET_LOGGING | |
1419 | printk(KERN_INFO "[mtk_net][socket]socket_create:fd=%d \n",retval); | |
1420 | #endif | |
1421 | } | |
1da177e4 LT |
1422 | return retval; |
1423 | ||
1424 | out_release: | |
1425 | sock_release(sock); | |
1426 | return retval; | |
1427 | } | |
1428 | ||
1429 | /* | |
1430 | * Create a pair of connected sockets. | |
1431 | */ | |
3e0fa65f HC |
1432 | SYSCALL_DEFINE4(socketpair, int, family, int, type, int, protocol, |
1433 | int __user *, usockvec) | |
1da177e4 LT |
1434 | { |
1435 | struct socket *sock1, *sock2; | |
1436 | int fd1, fd2, err; | |
db349509 | 1437 | struct file *newfile1, *newfile2; |
a677a039 UD |
1438 | int flags; |
1439 | ||
1440 | flags = type & ~SOCK_TYPE_MASK; | |
77d27200 | 1441 | if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) |
a677a039 UD |
1442 | return -EINVAL; |
1443 | type &= SOCK_TYPE_MASK; | |
1da177e4 | 1444 | |
aaca0bdc UD |
1445 | if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK)) |
1446 | flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK; | |
1447 | ||
1da177e4 LT |
1448 | /* |
1449 | * Obtain the first socket and check if the underlying protocol | |
1450 | * supports the socketpair call. | |
1451 | */ | |
1452 | ||
1453 | err = sock_create(family, type, protocol, &sock1); | |
1454 | if (err < 0) | |
1455 | goto out; | |
1456 | ||
1457 | err = sock_create(family, type, protocol, &sock2); | |
1458 | if (err < 0) | |
1459 | goto out_release_1; | |
1460 | ||
1461 | err = sock1->ops->socketpair(sock1, sock2); | |
89bddce5 | 1462 | if (err < 0) |
1da177e4 LT |
1463 | goto out_release_both; |
1464 | ||
28407630 | 1465 | fd1 = get_unused_fd_flags(flags); |
bf3c23d1 DM |
1466 | if (unlikely(fd1 < 0)) { |
1467 | err = fd1; | |
db349509 | 1468 | goto out_release_both; |
bf3c23d1 | 1469 | } |
28407630 | 1470 | fd2 = get_unused_fd_flags(flags); |
198de4d7 AV |
1471 | if (unlikely(fd2 < 0)) { |
1472 | err = fd2; | |
28407630 AV |
1473 | put_unused_fd(fd1); |
1474 | goto out_release_both; | |
1475 | } | |
1476 | ||
aab174f0 | 1477 | newfile1 = sock_alloc_file(sock1, flags, NULL); |
28407630 AV |
1478 | if (unlikely(IS_ERR(newfile1))) { |
1479 | err = PTR_ERR(newfile1); | |
1480 | put_unused_fd(fd1); | |
1481 | put_unused_fd(fd2); | |
1482 | goto out_release_both; | |
1483 | } | |
1484 | ||
aab174f0 | 1485 | newfile2 = sock_alloc_file(sock2, flags, NULL); |
28407630 AV |
1486 | if (IS_ERR(newfile2)) { |
1487 | err = PTR_ERR(newfile2); | |
198de4d7 AV |
1488 | fput(newfile1); |
1489 | put_unused_fd(fd1); | |
28407630 | 1490 | put_unused_fd(fd2); |
198de4d7 AV |
1491 | sock_release(sock2); |
1492 | goto out; | |
db349509 AV |
1493 | } |
1494 | ||
157cf649 | 1495 | audit_fd_pair(fd1, fd2); |
db349509 AV |
1496 | fd_install(fd1, newfile1); |
1497 | fd_install(fd2, newfile2); | |
1da177e4 LT |
1498 | /* fd1 and fd2 may be already another descriptors. |
1499 | * Not kernel problem. | |
1500 | */ | |
1501 | ||
89bddce5 | 1502 | err = put_user(fd1, &usockvec[0]); |
1da177e4 LT |
1503 | if (!err) |
1504 | err = put_user(fd2, &usockvec[1]); | |
1505 | if (!err) | |
6fa3eb70 S |
1506 | { |
1507 | if(sock1 && SOCK_INODE(sock1) && sock2&& SOCK_INODE(sock2) ) | |
1508 | { | |
1509 | #ifdef CONFIG_MTK_NET_LOGGING | |
1510 | printk(KERN_INFO "[mtk_net][socket]socketpair:fd1[%lu]=%d, fd2[%lu]=%d \n", SOCK_INODE(sock1)->i_ino,fd1,SOCK_INODE(sock2)->i_ino,fd2); | |
1511 | #endif | |
1512 | } | |
1513 | ||
1da177e4 | 1514 | return 0; |
6fa3eb70 | 1515 | } |
1da177e4 LT |
1516 | |
1517 | sys_close(fd2); | |
1518 | sys_close(fd1); | |
6fa3eb70 S |
1519 | #ifdef CONFIG_MTK_NET_LOGGING |
1520 | printk(KERN_INFO "[mtk_net][socket]socketpair fail1: %d \n", err); | |
1521 | #endif | |
1da177e4 LT |
1522 | return err; |
1523 | ||
1da177e4 | 1524 | out_release_both: |
89bddce5 | 1525 | sock_release(sock2); |
1da177e4 | 1526 | out_release_1: |
89bddce5 | 1527 | sock_release(sock1); |
1da177e4 | 1528 | out: |
6fa3eb70 S |
1529 | #ifdef CONFIG_MTK_NET_LOGGING |
1530 | printk(KERN_INFO "[mtk_net][socket]socketpair fail2: %d \n", err); | |
1531 | #endif | |
1da177e4 LT |
1532 | return err; |
1533 | } | |
1534 | ||
1da177e4 LT |
1535 | /* |
1536 | * Bind a name to a socket. Nothing much to do here since it's | |
1537 | * the protocol's responsibility to handle the local address. | |
1538 | * | |
1539 | * We move the socket address to kernel space before we call | |
1540 | * the protocol layer (having also checked the address is ok). | |
1541 | */ | |
1542 | ||
20f37034 | 1543 | SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen) |
1da177e4 LT |
1544 | { |
1545 | struct socket *sock; | |
230b1839 | 1546 | struct sockaddr_storage address; |
6cb153ca | 1547 | int err, fput_needed; |
1da177e4 | 1548 | |
89bddce5 | 1549 | sock = sockfd_lookup_light(fd, &err, &fput_needed); |
e71a4783 | 1550 | if (sock) { |
43db362d | 1551 | err = move_addr_to_kernel(umyaddr, addrlen, &address); |
6fa3eb70 | 1552 | |
89bddce5 SH |
1553 | if (err >= 0) { |
1554 | err = security_socket_bind(sock, | |
230b1839 | 1555 | (struct sockaddr *)&address, |
89bddce5 | 1556 | addrlen); |
6cb153ca BL |
1557 | if (!err) |
1558 | err = sock->ops->bind(sock, | |
89bddce5 | 1559 | (struct sockaddr *) |
230b1839 | 1560 | &address, addrlen); |
6fa3eb70 S |
1561 | |
1562 | #ifdef CONFIG_MTK_NET_LOGGING | |
1563 | if((((struct sockaddr_in *)&address)->sin_family) != AF_UNIX) | |
1564 | { | |
1565 | printk(KERN_WARNING "[mtk_net][socket] bind addr->sin_port:%d,err:%d \n",htons(((struct sockaddr_in *)&address)->sin_port),err); | |
1566 | } | |
1567 | #endif | |
1da177e4 | 1568 | } |
6cb153ca | 1569 | fput_light(sock->file, fput_needed); |
89bddce5 | 1570 | } |
1da177e4 LT |
1571 | return err; |
1572 | } | |
1573 | ||
1da177e4 LT |
1574 | /* |
1575 | * Perform a listen. Basically, we allow the protocol to do anything | |
1576 | * necessary for a listen, and if that works, we mark the socket as | |
1577 | * ready for listening. | |
1578 | */ | |
1579 | ||
3e0fa65f | 1580 | SYSCALL_DEFINE2(listen, int, fd, int, backlog) |
1da177e4 LT |
1581 | { |
1582 | struct socket *sock; | |
6cb153ca | 1583 | int err, fput_needed; |
b8e1f9b5 | 1584 | int somaxconn; |
89bddce5 SH |
1585 | |
1586 | sock = sockfd_lookup_light(fd, &err, &fput_needed); | |
1587 | if (sock) { | |
8efa6e93 | 1588 | somaxconn = sock_net(sock->sk)->core.sysctl_somaxconn; |
95c96174 | 1589 | if ((unsigned int)backlog > somaxconn) |
b8e1f9b5 | 1590 | backlog = somaxconn; |
1da177e4 LT |
1591 | |
1592 | err = security_socket_listen(sock, backlog); | |
6cb153ca BL |
1593 | if (!err) |
1594 | err = sock->ops->listen(sock, backlog); | |
1da177e4 | 1595 | |
6cb153ca | 1596 | fput_light(sock->file, fput_needed); |
1da177e4 LT |
1597 | } |
1598 | return err; | |
1599 | } | |
1600 | ||
1da177e4 LT |
1601 | /* |
1602 | * For accept, we attempt to create a new socket, set up the link | |
1603 | * with the client, wake up the client, then return the new | |
1604 | * connected fd. We collect the address of the connector in kernel | |
1605 | * space and move it to user at the very end. This is unclean because | |
1606 | * we open the socket then return an error. | |
1607 | * | |
1608 | * 1003.1g adds the ability to recvmsg() to query connection pending | |
1609 | * status to recvmsg. We need to add that support in a way thats | |
1610 | * clean when we restucture accept also. | |
1611 | */ | |
20f37034 HC |
1612 | SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr, |
1613 | int __user *, upeer_addrlen, int, flags) | |
1da177e4 LT |
1614 | { |
1615 | struct socket *sock, *newsock; | |
39d8c1b6 | 1616 | struct file *newfile; |
6cb153ca | 1617 | int err, len, newfd, fput_needed; |
230b1839 | 1618 | struct sockaddr_storage address; |
1da177e4 | 1619 | |
77d27200 | 1620 | if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) |
aaca0bdc UD |
1621 | return -EINVAL; |
1622 | ||
1623 | if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK)) | |
1624 | flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK; | |
1625 | ||
6cb153ca | 1626 | sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4 LT |
1627 | if (!sock) |
1628 | goto out; | |
1629 | ||
1630 | err = -ENFILE; | |
c6d409cf ED |
1631 | newsock = sock_alloc(); |
1632 | if (!newsock) | |
1da177e4 LT |
1633 | goto out_put; |
1634 | ||
1635 | newsock->type = sock->type; | |
1636 | newsock->ops = sock->ops; | |
1637 | ||
1da177e4 LT |
1638 | /* |
1639 | * We don't need try_module_get here, as the listening socket (sock) | |
1640 | * has the protocol module (sock->ops->owner) held. | |
1641 | */ | |
1642 | __module_get(newsock->ops->owner); | |
1643 | ||
28407630 | 1644 | newfd = get_unused_fd_flags(flags); |
39d8c1b6 DM |
1645 | if (unlikely(newfd < 0)) { |
1646 | err = newfd; | |
9a1875e6 DM |
1647 | sock_release(newsock); |
1648 | goto out_put; | |
39d8c1b6 | 1649 | } |
aab174f0 | 1650 | newfile = sock_alloc_file(newsock, flags, sock->sk->sk_prot_creator->name); |
28407630 AV |
1651 | if (unlikely(IS_ERR(newfile))) { |
1652 | err = PTR_ERR(newfile); | |
1653 | put_unused_fd(newfd); | |
1654 | sock_release(newsock); | |
1655 | goto out_put; | |
1656 | } | |
39d8c1b6 | 1657 | |
a79af59e FF |
1658 | err = security_socket_accept(sock, newsock); |
1659 | if (err) | |
39d8c1b6 | 1660 | goto out_fd; |
a79af59e | 1661 | |
1da177e4 LT |
1662 | err = sock->ops->accept(sock, newsock, sock->file->f_flags); |
1663 | if (err < 0) | |
39d8c1b6 | 1664 | goto out_fd; |
1da177e4 LT |
1665 | |
1666 | if (upeer_sockaddr) { | |
230b1839 | 1667 | if (newsock->ops->getname(newsock, (struct sockaddr *)&address, |
89bddce5 | 1668 | &len, 2) < 0) { |
1da177e4 | 1669 | err = -ECONNABORTED; |
39d8c1b6 | 1670 | goto out_fd; |
1da177e4 | 1671 | } |
43db362d | 1672 | err = move_addr_to_user(&address, |
230b1839 | 1673 | len, upeer_sockaddr, upeer_addrlen); |
1da177e4 | 1674 | if (err < 0) |
39d8c1b6 | 1675 | goto out_fd; |
1da177e4 LT |
1676 | } |
1677 | ||
1678 | /* File flags are not inherited via accept() unlike another OSes. */ | |
1679 | ||
39d8c1b6 DM |
1680 | fd_install(newfd, newfile); |
1681 | err = newfd; | |
1da177e4 | 1682 | |
1da177e4 | 1683 | out_put: |
6cb153ca | 1684 | fput_light(sock->file, fput_needed); |
1da177e4 | 1685 | out: |
6fa3eb70 S |
1686 | if( (err>=0)&& newsock && SOCK_INODE(newsock) ) |
1687 | { | |
1688 | #ifdef CONFIG_MTK_NET_LOGGING | |
1689 | printk(KERN_INFO "[mtk_net][socket]socket_accept:fd=%d \n",err); | |
1690 | #endif | |
1691 | } | |
1692 | ||
1da177e4 | 1693 | return err; |
39d8c1b6 | 1694 | out_fd: |
9606a216 | 1695 | fput(newfile); |
39d8c1b6 | 1696 | put_unused_fd(newfd); |
1da177e4 LT |
1697 | goto out_put; |
1698 | } | |
1699 | ||
20f37034 HC |
1700 | SYSCALL_DEFINE3(accept, int, fd, struct sockaddr __user *, upeer_sockaddr, |
1701 | int __user *, upeer_addrlen) | |
aaca0bdc | 1702 | { |
de11defe | 1703 | return sys_accept4(fd, upeer_sockaddr, upeer_addrlen, 0); |
aaca0bdc UD |
1704 | } |
1705 | ||
1da177e4 LT |
1706 | /* |
1707 | * Attempt to connect to a socket with the server address. The address | |
1708 | * is in user space so we verify it is OK and move it to kernel space. | |
1709 | * | |
1710 | * For 1003.1g we need to add clean support for a bind to AF_UNSPEC to | |
1711 | * break bindings | |
1712 | * | |
1713 | * NOTE: 1003.1g draft 6.3 is broken with respect to AX.25/NetROM and | |
1714 | * other SEQPACKET protocols that take time to connect() as it doesn't | |
1715 | * include the -EINPROGRESS status for such sockets. | |
1716 | */ | |
1717 | ||
20f37034 HC |
1718 | SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr, |
1719 | int, addrlen) | |
1da177e4 LT |
1720 | { |
1721 | struct socket *sock; | |
230b1839 | 1722 | struct sockaddr_storage address; |
6cb153ca | 1723 | int err, fput_needed; |
1da177e4 | 1724 | |
6cb153ca | 1725 | sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4 LT |
1726 | if (!sock) |
1727 | goto out; | |
43db362d | 1728 | err = move_addr_to_kernel(uservaddr, addrlen, &address); |
1da177e4 LT |
1729 | if (err < 0) |
1730 | goto out_put; | |
1731 | ||
89bddce5 | 1732 | err = |
230b1839 | 1733 | security_socket_connect(sock, (struct sockaddr *)&address, addrlen); |
1da177e4 LT |
1734 | if (err) |
1735 | goto out_put; | |
1736 | ||
230b1839 | 1737 | err = sock->ops->connect(sock, (struct sockaddr *)&address, addrlen, |
1da177e4 LT |
1738 | sock->file->f_flags); |
1739 | out_put: | |
6cb153ca | 1740 | fput_light(sock->file, fput_needed); |
1da177e4 LT |
1741 | out: |
1742 | return err; | |
1743 | } | |
1744 | ||
1745 | /* | |
1746 | * Get the local address ('name') of a socket object. Move the obtained | |
1747 | * name to user space. | |
1748 | */ | |
1749 | ||
20f37034 HC |
1750 | SYSCALL_DEFINE3(getsockname, int, fd, struct sockaddr __user *, usockaddr, |
1751 | int __user *, usockaddr_len) | |
1da177e4 LT |
1752 | { |
1753 | struct socket *sock; | |
230b1839 | 1754 | struct sockaddr_storage address; |
6cb153ca | 1755 | int len, err, fput_needed; |
89bddce5 | 1756 | |
6cb153ca | 1757 | sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4 LT |
1758 | if (!sock) |
1759 | goto out; | |
1760 | ||
1761 | err = security_socket_getsockname(sock); | |
1762 | if (err) | |
1763 | goto out_put; | |
1764 | ||
230b1839 | 1765 | err = sock->ops->getname(sock, (struct sockaddr *)&address, &len, 0); |
1da177e4 LT |
1766 | if (err) |
1767 | goto out_put; | |
43db362d | 1768 | err = move_addr_to_user(&address, len, usockaddr, usockaddr_len); |
1da177e4 LT |
1769 | |
1770 | out_put: | |
6cb153ca | 1771 | fput_light(sock->file, fput_needed); |
1da177e4 LT |
1772 | out: |
1773 | return err; | |
1774 | } | |
1775 | ||
1776 | /* | |
1777 | * Get the remote address ('name') of a socket object. Move the obtained | |
1778 | * name to user space. | |
1779 | */ | |
1780 | ||
20f37034 HC |
1781 | SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr, |
1782 | int __user *, usockaddr_len) | |
1da177e4 LT |
1783 | { |
1784 | struct socket *sock; | |
230b1839 | 1785 | struct sockaddr_storage address; |
6cb153ca | 1786 | int len, err, fput_needed; |
1da177e4 | 1787 | |
89bddce5 SH |
1788 | sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1789 | if (sock != NULL) { | |
1da177e4 LT |
1790 | err = security_socket_getpeername(sock); |
1791 | if (err) { | |
6cb153ca | 1792 | fput_light(sock->file, fput_needed); |
1da177e4 LT |
1793 | return err; |
1794 | } | |
1795 | ||
89bddce5 | 1796 | err = |
230b1839 | 1797 | sock->ops->getname(sock, (struct sockaddr *)&address, &len, |
89bddce5 | 1798 | 1); |
1da177e4 | 1799 | if (!err) |
43db362d | 1800 | err = move_addr_to_user(&address, len, usockaddr, |
89bddce5 | 1801 | usockaddr_len); |
6cb153ca | 1802 | fput_light(sock->file, fput_needed); |
1da177e4 LT |
1803 | } |
1804 | return err; | |
1805 | } | |
1806 | ||
1807 | /* | |
1808 | * Send a datagram to a given address. We move the address into kernel | |
1809 | * space and check the user space data area is readable before invoking | |
1810 | * the protocol. | |
1811 | */ | |
1812 | ||
3e0fa65f | 1813 | SYSCALL_DEFINE6(sendto, int, fd, void __user *, buff, size_t, len, |
95c96174 | 1814 | unsigned int, flags, struct sockaddr __user *, addr, |
3e0fa65f | 1815 | int, addr_len) |
1da177e4 LT |
1816 | { |
1817 | struct socket *sock; | |
230b1839 | 1818 | struct sockaddr_storage address; |
1da177e4 LT |
1819 | int err; |
1820 | struct msghdr msg; | |
1821 | struct iovec iov; | |
6cb153ca | 1822 | int fput_needed; |
6cb153ca | 1823 | |
253eacc0 LT |
1824 | if (len > INT_MAX) |
1825 | len = INT_MAX; | |
4b9e9796 S |
1826 | if (unlikely(!access_ok(VERIFY_READ, buff, len))) |
1827 | return -EFAULT; | |
de0fa95c PE |
1828 | sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1829 | if (!sock) | |
4387ff75 | 1830 | goto out; |
6cb153ca | 1831 | |
89bddce5 SH |
1832 | iov.iov_base = buff; |
1833 | iov.iov_len = len; | |
1834 | msg.msg_name = NULL; | |
1835 | msg.msg_iov = &iov; | |
1836 | msg.msg_iovlen = 1; | |
1837 | msg.msg_control = NULL; | |
1838 | msg.msg_controllen = 0; | |
1839 | msg.msg_namelen = 0; | |
6cb153ca | 1840 | if (addr) { |
43db362d | 1841 | err = move_addr_to_kernel(addr, addr_len, &address); |
1da177e4 LT |
1842 | if (err < 0) |
1843 | goto out_put; | |
230b1839 | 1844 | msg.msg_name = (struct sockaddr *)&address; |
89bddce5 | 1845 | msg.msg_namelen = addr_len; |
1da177e4 LT |
1846 | } |
1847 | if (sock->file->f_flags & O_NONBLOCK) | |
1848 | flags |= MSG_DONTWAIT; | |
1849 | msg.msg_flags = flags; | |
1850 | err = sock_sendmsg(sock, &msg, len); | |
1851 | ||
89bddce5 | 1852 | out_put: |
de0fa95c | 1853 | fput_light(sock->file, fput_needed); |
4387ff75 | 1854 | out: |
1da177e4 LT |
1855 | return err; |
1856 | } | |
1857 | ||
1858 | /* | |
89bddce5 | 1859 | * Send a datagram down a socket. |
1da177e4 LT |
1860 | */ |
1861 | ||
3e0fa65f | 1862 | SYSCALL_DEFINE4(send, int, fd, void __user *, buff, size_t, len, |
95c96174 | 1863 | unsigned int, flags) |
1da177e4 LT |
1864 | { |
1865 | return sys_sendto(fd, buff, len, flags, NULL, 0); | |
1866 | } | |
1867 | ||
1868 | /* | |
89bddce5 | 1869 | * Receive a frame from the socket and optionally record the address of the |
1da177e4 LT |
1870 | * sender. We verify the buffers are writable and if needed move the |
1871 | * sender address from kernel to user space. | |
1872 | */ | |
1873 | ||
3e0fa65f | 1874 | SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size, |
95c96174 | 1875 | unsigned int, flags, struct sockaddr __user *, addr, |
3e0fa65f | 1876 | int __user *, addr_len) |
1da177e4 LT |
1877 | { |
1878 | struct socket *sock; | |
1879 | struct iovec iov; | |
1880 | struct msghdr msg; | |
230b1839 | 1881 | struct sockaddr_storage address; |
89bddce5 | 1882 | int err, err2; |
6cb153ca BL |
1883 | int fput_needed; |
1884 | ||
253eacc0 LT |
1885 | if (size > INT_MAX) |
1886 | size = INT_MAX; | |
4b9e9796 S |
1887 | if (unlikely(!access_ok(VERIFY_WRITE, ubuf, size))) |
1888 | return -EFAULT; | |
de0fa95c | 1889 | sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4 | 1890 | if (!sock) |
de0fa95c | 1891 | goto out; |
1da177e4 | 1892 | |
89bddce5 SH |
1893 | msg.msg_control = NULL; |
1894 | msg.msg_controllen = 0; | |
1895 | msg.msg_iovlen = 1; | |
1896 | msg.msg_iov = &iov; | |
1897 | iov.iov_len = size; | |
1898 | iov.iov_base = ubuf; | |
2f73d7fd HFS |
1899 | /* Save some cycles and don't copy the address if not needed */ |
1900 | msg.msg_name = addr ? (struct sockaddr *)&address : NULL; | |
1901 | /* We assume all kernel code knows the size of sockaddr_storage */ | |
1902 | msg.msg_namelen = 0; | |
1da177e4 LT |
1903 | if (sock->file->f_flags & O_NONBLOCK) |
1904 | flags |= MSG_DONTWAIT; | |
89bddce5 | 1905 | err = sock_recvmsg(sock, &msg, size, flags); |
1da177e4 | 1906 | |
89bddce5 | 1907 | if (err >= 0 && addr != NULL) { |
43db362d | 1908 | err2 = move_addr_to_user(&address, |
230b1839 | 1909 | msg.msg_namelen, addr, addr_len); |
89bddce5 SH |
1910 | if (err2 < 0) |
1911 | err = err2; | |
1da177e4 | 1912 | } |
de0fa95c PE |
1913 | |
1914 | fput_light(sock->file, fput_needed); | |
4387ff75 | 1915 | out: |
1da177e4 LT |
1916 | return err; |
1917 | } | |
1918 | ||
1919 | /* | |
89bddce5 | 1920 | * Receive a datagram from a socket. |
1da177e4 LT |
1921 | */ |
1922 | ||
89bddce5 | 1923 | asmlinkage long sys_recv(int fd, void __user *ubuf, size_t size, |
95c96174 | 1924 | unsigned int flags) |
1da177e4 LT |
1925 | { |
1926 | return sys_recvfrom(fd, ubuf, size, flags, NULL, NULL); | |
1927 | } | |
1928 | ||
1929 | /* | |
1930 | * Set a socket option. Because we don't know the option lengths we have | |
1931 | * to pass the user mode parameter for the protocols to sort out. | |
1932 | */ | |
1933 | ||
20f37034 HC |
1934 | SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname, |
1935 | char __user *, optval, int, optlen) | |
1da177e4 | 1936 | { |
6cb153ca | 1937 | int err, fput_needed; |
1da177e4 LT |
1938 | struct socket *sock; |
1939 | ||
1940 | if (optlen < 0) | |
1941 | return -EINVAL; | |
89bddce5 SH |
1942 | |
1943 | sock = sockfd_lookup_light(fd, &err, &fput_needed); | |
1944 | if (sock != NULL) { | |
1945 | err = security_socket_setsockopt(sock, level, optname); | |
6cb153ca BL |
1946 | if (err) |
1947 | goto out_put; | |
1da177e4 LT |
1948 | |
1949 | if (level == SOL_SOCKET) | |
89bddce5 SH |
1950 | err = |
1951 | sock_setsockopt(sock, level, optname, optval, | |
1952 | optlen); | |
1da177e4 | 1953 | else |
89bddce5 SH |
1954 | err = |
1955 | sock->ops->setsockopt(sock, level, optname, optval, | |
1956 | optlen); | |
6cb153ca BL |
1957 | out_put: |
1958 | fput_light(sock->file, fput_needed); | |
1da177e4 LT |
1959 | } |
1960 | return err; | |
1961 | } | |
1962 | ||
1963 | /* | |
1964 | * Get a socket option. Because we don't know the option lengths we have | |
1965 | * to pass a user mode parameter for the protocols to sort out. | |
1966 | */ | |
1967 | ||
20f37034 HC |
1968 | SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname, |
1969 | char __user *, optval, int __user *, optlen) | |
1da177e4 | 1970 | { |
6cb153ca | 1971 | int err, fput_needed; |
1da177e4 LT |
1972 | struct socket *sock; |
1973 | ||
89bddce5 SH |
1974 | sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1975 | if (sock != NULL) { | |
6cb153ca BL |
1976 | err = security_socket_getsockopt(sock, level, optname); |
1977 | if (err) | |
1978 | goto out_put; | |
1da177e4 LT |
1979 | |
1980 | if (level == SOL_SOCKET) | |
89bddce5 SH |
1981 | err = |
1982 | sock_getsockopt(sock, level, optname, optval, | |
1983 | optlen); | |
1da177e4 | 1984 | else |
89bddce5 SH |
1985 | err = |
1986 | sock->ops->getsockopt(sock, level, optname, optval, | |
1987 | optlen); | |
6cb153ca BL |
1988 | out_put: |
1989 | fput_light(sock->file, fput_needed); | |
1da177e4 LT |
1990 | } |
1991 | return err; | |
1992 | } | |
1993 | ||
1da177e4 LT |
1994 | /* |
1995 | * Shutdown a socket. | |
1996 | */ | |
1997 | ||
754fe8d2 | 1998 | SYSCALL_DEFINE2(shutdown, int, fd, int, how) |
1da177e4 | 1999 | { |
6cb153ca | 2000 | int err, fput_needed; |
1da177e4 LT |
2001 | struct socket *sock; |
2002 | ||
89bddce5 SH |
2003 | sock = sockfd_lookup_light(fd, &err, &fput_needed); |
2004 | if (sock != NULL) { | |
1da177e4 | 2005 | err = security_socket_shutdown(sock, how); |
6cb153ca BL |
2006 | if (!err) |
2007 | err = sock->ops->shutdown(sock, how); | |
2008 | fput_light(sock->file, fput_needed); | |
1da177e4 LT |
2009 | } |
2010 | return err; | |
2011 | } | |
2012 | ||
89bddce5 | 2013 | /* A couple of helpful macros for getting the address of the 32/64 bit |
1da177e4 LT |
2014 | * fields which are the same type (int / unsigned) on our platforms. |
2015 | */ | |
2016 | #define COMPAT_MSG(msg, member) ((MSG_CMSG_COMPAT & flags) ? &msg##_compat->member : &msg->member) | |
2017 | #define COMPAT_NAMELEN(msg) COMPAT_MSG(msg, msg_namelen) | |
2018 | #define COMPAT_FLAGS(msg) COMPAT_MSG(msg, msg_flags) | |
2019 | ||
c71d8ebe TH |
2020 | struct used_address { |
2021 | struct sockaddr_storage name; | |
2022 | unsigned int name_len; | |
2023 | }; | |
2024 | ||
2e8d97ab DC |
2025 | static int copy_msghdr_from_user(struct msghdr *kmsg, |
2026 | struct msghdr __user *umsg) | |
2027 | { | |
2028 | if (copy_from_user(kmsg, umsg, sizeof(struct msghdr))) | |
2029 | return -EFAULT; | |
29a322f4 ML |
2030 | |
2031 | if (kmsg->msg_namelen < 0) | |
2032 | return -EINVAL; | |
2033 | ||
2e8d97ab | 2034 | if (kmsg->msg_namelen > sizeof(struct sockaddr_storage)) |
ed47bba2 | 2035 | kmsg->msg_namelen = sizeof(struct sockaddr_storage); |
2e8d97ab DC |
2036 | return 0; |
2037 | } | |
2038 | ||
a7526eb5 | 2039 | static int ___sys_sendmsg(struct socket *sock, struct msghdr __user *msg, |
95c96174 | 2040 | struct msghdr *msg_sys, unsigned int flags, |
c71d8ebe | 2041 | struct used_address *used_address) |
1da177e4 | 2042 | { |
89bddce5 SH |
2043 | struct compat_msghdr __user *msg_compat = |
2044 | (struct compat_msghdr __user *)msg; | |
230b1839 | 2045 | struct sockaddr_storage address; |
1da177e4 | 2046 | struct iovec iovstack[UIO_FASTIOV], *iov = iovstack; |
b9d717a7 | 2047 | unsigned char ctl[sizeof(struct cmsghdr) + 20] |
89bddce5 SH |
2048 | __attribute__ ((aligned(sizeof(__kernel_size_t)))); |
2049 | /* 20 is size of ipv6_pktinfo */ | |
1da177e4 | 2050 | unsigned char *ctl_buf = ctl; |
a74e9106 | 2051 | int err, ctl_len, total_len; |
89bddce5 | 2052 | |
1da177e4 | 2053 | err = -EFAULT; |
521c4dd4 JZ |
2054 | if (MSG_CMSG_COMPAT & flags) |
2055 | err = get_compat_msghdr(msg_sys, msg_compat); | |
2056 | else | |
2e8d97ab | 2057 | err = copy_msghdr_from_user(msg_sys, msg); |
521c4dd4 JZ |
2058 | if (err) |
2059 | return err; | |
1da177e4 | 2060 | |
228e548e | 2061 | if (msg_sys->msg_iovlen > UIO_FASTIOV) { |
a74e9106 ED |
2062 | err = -EMSGSIZE; |
2063 | if (msg_sys->msg_iovlen > UIO_MAXIOV) | |
2064 | goto out; | |
2065 | err = -ENOMEM; | |
2066 | iov = kmalloc(msg_sys->msg_iovlen * sizeof(struct iovec), | |
2067 | GFP_KERNEL); | |
1da177e4 | 2068 | if (!iov) |
228e548e | 2069 | goto out; |
1da177e4 LT |
2070 | } |
2071 | ||
2072 | /* This will also move the address data into kernel space */ | |
2073 | if (MSG_CMSG_COMPAT & flags) { | |
43db362d | 2074 | err = verify_compat_iovec(msg_sys, iov, &address, VERIFY_READ); |
1da177e4 | 2075 | } else |
43db362d | 2076 | err = verify_iovec(msg_sys, iov, &address, VERIFY_READ); |
89bddce5 | 2077 | if (err < 0) |
1da177e4 LT |
2078 | goto out_freeiov; |
2079 | total_len = err; | |
2080 | ||
2081 | err = -ENOBUFS; | |
2082 | ||
228e548e | 2083 | if (msg_sys->msg_controllen > INT_MAX) |
1da177e4 | 2084 | goto out_freeiov; |
228e548e | 2085 | ctl_len = msg_sys->msg_controllen; |
1da177e4 | 2086 | if ((MSG_CMSG_COMPAT & flags) && ctl_len) { |
89bddce5 | 2087 | err = |
228e548e | 2088 | cmsghdr_from_user_compat_to_kern(msg_sys, sock->sk, ctl, |
89bddce5 | 2089 | sizeof(ctl)); |
1da177e4 LT |
2090 | if (err) |
2091 | goto out_freeiov; | |
228e548e AB |
2092 | ctl_buf = msg_sys->msg_control; |
2093 | ctl_len = msg_sys->msg_controllen; | |
1da177e4 | 2094 | } else if (ctl_len) { |
89bddce5 | 2095 | if (ctl_len > sizeof(ctl)) { |
1da177e4 | 2096 | ctl_buf = sock_kmalloc(sock->sk, ctl_len, GFP_KERNEL); |
89bddce5 | 2097 | if (ctl_buf == NULL) |
1da177e4 LT |
2098 | goto out_freeiov; |
2099 | } | |
2100 | err = -EFAULT; | |
2101 | /* | |
228e548e | 2102 | * Careful! Before this, msg_sys->msg_control contains a user pointer. |
1da177e4 LT |
2103 | * Afterwards, it will be a kernel pointer. Thus the compiler-assisted |
2104 | * checking falls down on this. | |
2105 | */ | |
fb8621bb | 2106 | if (copy_from_user(ctl_buf, |
228e548e | 2107 | (void __user __force *)msg_sys->msg_control, |
89bddce5 | 2108 | ctl_len)) |
1da177e4 | 2109 | goto out_freectl; |
228e548e | 2110 | msg_sys->msg_control = ctl_buf; |
1da177e4 | 2111 | } |
228e548e | 2112 | msg_sys->msg_flags = flags; |
1da177e4 LT |
2113 | |
2114 | if (sock->file->f_flags & O_NONBLOCK) | |
228e548e | 2115 | msg_sys->msg_flags |= MSG_DONTWAIT; |
c71d8ebe TH |
2116 | /* |
2117 | * If this is sendmmsg() and current destination address is same as | |
2118 | * previously succeeded address, omit asking LSM's decision. | |
2119 | * used_address->name_len is initialized to UINT_MAX so that the first | |
2120 | * destination address never matches. | |
2121 | */ | |
bc909d9d MD |
2122 | if (used_address && msg_sys->msg_name && |
2123 | used_address->name_len == msg_sys->msg_namelen && | |
2124 | !memcmp(&used_address->name, msg_sys->msg_name, | |
c71d8ebe TH |
2125 | used_address->name_len)) { |
2126 | err = sock_sendmsg_nosec(sock, msg_sys, total_len); | |
2127 | goto out_freectl; | |
2128 | } | |
2129 | err = sock_sendmsg(sock, msg_sys, total_len); | |
2130 | /* | |
2131 | * If this is sendmmsg() and sending to current destination address was | |
2132 | * successful, remember it. | |
2133 | */ | |
2134 | if (used_address && err >= 0) { | |
2135 | used_address->name_len = msg_sys->msg_namelen; | |
bc909d9d MD |
2136 | if (msg_sys->msg_name) |
2137 | memcpy(&used_address->name, msg_sys->msg_name, | |
2138 | used_address->name_len); | |
c71d8ebe | 2139 | } |
1da177e4 LT |
2140 | |
2141 | out_freectl: | |
89bddce5 | 2142 | if (ctl_buf != ctl) |
1da177e4 LT |
2143 | sock_kfree_s(sock->sk, ctl_buf, ctl_len); |
2144 | out_freeiov: | |
2145 | if (iov != iovstack) | |
a74e9106 | 2146 | kfree(iov); |
228e548e AB |
2147 | out: |
2148 | return err; | |
2149 | } | |
2150 | ||
2151 | /* | |
2152 | * BSD sendmsg interface | |
2153 | */ | |
2154 | ||
a7526eb5 | 2155 | long __sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags) |
228e548e AB |
2156 | { |
2157 | int fput_needed, err; | |
2158 | struct msghdr msg_sys; | |
1be374a0 AL |
2159 | struct socket *sock; |
2160 | ||
1be374a0 | 2161 | sock = sockfd_lookup_light(fd, &err, &fput_needed); |
228e548e AB |
2162 | if (!sock) |
2163 | goto out; | |
2164 | ||
a7526eb5 | 2165 | err = ___sys_sendmsg(sock, msg, &msg_sys, flags, NULL); |
228e548e | 2166 | |
6cb153ca | 2167 | fput_light(sock->file, fput_needed); |
89bddce5 | 2168 | out: |
1da177e4 LT |
2169 | return err; |
2170 | } | |
2171 | ||
a7526eb5 AL |
2172 | SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned int, flags) |
2173 | { | |
2174 | if (flags & MSG_CMSG_COMPAT) | |
2175 | return -EINVAL; | |
2176 | return __sys_sendmsg(fd, msg, flags); | |
2177 | } | |
2178 | ||
228e548e AB |
2179 | /* |
2180 | * Linux sendmmsg interface | |
2181 | */ | |
2182 | ||
2183 | int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, | |
2184 | unsigned int flags) | |
2185 | { | |
2186 | int fput_needed, err, datagrams; | |
2187 | struct socket *sock; | |
2188 | struct mmsghdr __user *entry; | |
2189 | struct compat_mmsghdr __user *compat_entry; | |
2190 | struct msghdr msg_sys; | |
c71d8ebe | 2191 | struct used_address used_address; |
228e548e | 2192 | |
98382f41 AB |
2193 | if (vlen > UIO_MAXIOV) |
2194 | vlen = UIO_MAXIOV; | |
228e548e AB |
2195 | |
2196 | datagrams = 0; | |
2197 | ||
2198 | sock = sockfd_lookup_light(fd, &err, &fput_needed); | |
2199 | if (!sock) | |
2200 | return err; | |
2201 | ||
c71d8ebe | 2202 | used_address.name_len = UINT_MAX; |
228e548e AB |
2203 | entry = mmsg; |
2204 | compat_entry = (struct compat_mmsghdr __user *)mmsg; | |
728ffb86 | 2205 | err = 0; |
228e548e AB |
2206 | |
2207 | while (datagrams < vlen) { | |
228e548e | 2208 | if (MSG_CMSG_COMPAT & flags) { |
a7526eb5 AL |
2209 | err = ___sys_sendmsg(sock, (struct msghdr __user *)compat_entry, |
2210 | &msg_sys, flags, &used_address); | |
228e548e AB |
2211 | if (err < 0) |
2212 | break; | |
2213 | err = __put_user(err, &compat_entry->msg_len); | |
2214 | ++compat_entry; | |
2215 | } else { | |
a7526eb5 AL |
2216 | err = ___sys_sendmsg(sock, |
2217 | (struct msghdr __user *)entry, | |
2218 | &msg_sys, flags, &used_address); | |
228e548e AB |
2219 | if (err < 0) |
2220 | break; | |
2221 | err = put_user(err, &entry->msg_len); | |
2222 | ++entry; | |
2223 | } | |
2224 | ||
2225 | if (err) | |
2226 | break; | |
2227 | ++datagrams; | |
2228 | } | |
2229 | ||
228e548e AB |
2230 | fput_light(sock->file, fput_needed); |
2231 | ||
728ffb86 AB |
2232 | /* We only return an error if no datagrams were able to be sent */ |
2233 | if (datagrams != 0) | |
228e548e AB |
2234 | return datagrams; |
2235 | ||
228e548e AB |
2236 | return err; |
2237 | } | |
2238 | ||
2239 | SYSCALL_DEFINE4(sendmmsg, int, fd, struct mmsghdr __user *, mmsg, | |
2240 | unsigned int, vlen, unsigned int, flags) | |
2241 | { | |
1be374a0 AL |
2242 | if (flags & MSG_CMSG_COMPAT) |
2243 | return -EINVAL; | |
228e548e AB |
2244 | return __sys_sendmmsg(fd, mmsg, vlen, flags); |
2245 | } | |
2246 | ||
a7526eb5 | 2247 | static int ___sys_recvmsg(struct socket *sock, struct msghdr __user *msg, |
95c96174 | 2248 | struct msghdr *msg_sys, unsigned int flags, int nosec) |
1da177e4 | 2249 | { |
89bddce5 SH |
2250 | struct compat_msghdr __user *msg_compat = |
2251 | (struct compat_msghdr __user *)msg; | |
1da177e4 | 2252 | struct iovec iovstack[UIO_FASTIOV]; |
89bddce5 | 2253 | struct iovec *iov = iovstack; |
1da177e4 | 2254 | unsigned long cmsg_ptr; |
a74e9106 | 2255 | int err, total_len, len; |
1da177e4 LT |
2256 | |
2257 | /* kernel mode address */ | |
230b1839 | 2258 | struct sockaddr_storage addr; |
1da177e4 LT |
2259 | |
2260 | /* user mode address pointers */ | |
2261 | struct sockaddr __user *uaddr; | |
2262 | int __user *uaddr_len; | |
89bddce5 | 2263 | |
521c4dd4 JZ |
2264 | if (MSG_CMSG_COMPAT & flags) |
2265 | err = get_compat_msghdr(msg_sys, msg_compat); | |
2266 | else | |
2e8d97ab | 2267 | err = copy_msghdr_from_user(msg_sys, msg); |
521c4dd4 JZ |
2268 | if (err) |
2269 | return err; | |
1da177e4 | 2270 | |
a2e27255 | 2271 | if (msg_sys->msg_iovlen > UIO_FASTIOV) { |
a74e9106 ED |
2272 | err = -EMSGSIZE; |
2273 | if (msg_sys->msg_iovlen > UIO_MAXIOV) | |
2274 | goto out; | |
2275 | err = -ENOMEM; | |
2276 | iov = kmalloc(msg_sys->msg_iovlen * sizeof(struct iovec), | |
2277 | GFP_KERNEL); | |
1da177e4 | 2278 | if (!iov) |
a2e27255 | 2279 | goto out; |
1da177e4 LT |
2280 | } |
2281 | ||
2f73d7fd HFS |
2282 | /* Save the user-mode address (verify_iovec will change the |
2283 | * kernel msghdr to use the kernel address space) | |
1da177e4 | 2284 | */ |
a2e27255 | 2285 | uaddr = (__force void __user *)msg_sys->msg_name; |
1da177e4 | 2286 | uaddr_len = COMPAT_NAMELEN(msg); |
2f73d7fd | 2287 | if (MSG_CMSG_COMPAT & flags) |
43db362d | 2288 | err = verify_compat_iovec(msg_sys, iov, &addr, VERIFY_WRITE); |
2f73d7fd | 2289 | else |
43db362d | 2290 | err = verify_iovec(msg_sys, iov, &addr, VERIFY_WRITE); |
1da177e4 LT |
2291 | if (err < 0) |
2292 | goto out_freeiov; | |
89bddce5 | 2293 | total_len = err; |
1da177e4 | 2294 | |
a2e27255 ACM |
2295 | cmsg_ptr = (unsigned long)msg_sys->msg_control; |
2296 | msg_sys->msg_flags = flags & (MSG_CMSG_CLOEXEC|MSG_CMSG_COMPAT); | |
89bddce5 | 2297 | |
2f73d7fd HFS |
2298 | /* We assume all kernel code knows the size of sockaddr_storage */ |
2299 | msg_sys->msg_namelen = 0; | |
2300 | ||
1da177e4 LT |
2301 | if (sock->file->f_flags & O_NONBLOCK) |
2302 | flags |= MSG_DONTWAIT; | |
a2e27255 ACM |
2303 | err = (nosec ? sock_recvmsg_nosec : sock_recvmsg)(sock, msg_sys, |
2304 | total_len, flags); | |
1da177e4 LT |
2305 | if (err < 0) |
2306 | goto out_freeiov; | |
2307 | len = err; | |
2308 | ||
2309 | if (uaddr != NULL) { | |
43db362d | 2310 | err = move_addr_to_user(&addr, |
a2e27255 | 2311 | msg_sys->msg_namelen, uaddr, |
89bddce5 | 2312 | uaddr_len); |
1da177e4 LT |
2313 | if (err < 0) |
2314 | goto out_freeiov; | |
2315 | } | |
a2e27255 | 2316 | err = __put_user((msg_sys->msg_flags & ~MSG_CMSG_COMPAT), |
37f7f421 | 2317 | COMPAT_FLAGS(msg)); |
1da177e4 LT |
2318 | if (err) |
2319 | goto out_freeiov; | |
2320 | if (MSG_CMSG_COMPAT & flags) | |
a2e27255 | 2321 | err = __put_user((unsigned long)msg_sys->msg_control - cmsg_ptr, |
1da177e4 LT |
2322 | &msg_compat->msg_controllen); |
2323 | else | |
a2e27255 | 2324 | err = __put_user((unsigned long)msg_sys->msg_control - cmsg_ptr, |
1da177e4 LT |
2325 | &msg->msg_controllen); |
2326 | if (err) | |
2327 | goto out_freeiov; | |
2328 | err = len; | |
2329 | ||
2330 | out_freeiov: | |
2331 | if (iov != iovstack) | |
a74e9106 | 2332 | kfree(iov); |
a2e27255 ACM |
2333 | out: |
2334 | return err; | |
2335 | } | |
2336 | ||
2337 | /* | |
2338 | * BSD recvmsg interface | |
2339 | */ | |
2340 | ||
a7526eb5 | 2341 | long __sys_recvmsg(int fd, struct msghdr __user *msg, unsigned flags) |
a2e27255 ACM |
2342 | { |
2343 | int fput_needed, err; | |
2344 | struct msghdr msg_sys; | |
1be374a0 AL |
2345 | struct socket *sock; |
2346 | ||
1be374a0 | 2347 | sock = sockfd_lookup_light(fd, &err, &fput_needed); |
a2e27255 ACM |
2348 | if (!sock) |
2349 | goto out; | |
2350 | ||
a7526eb5 | 2351 | err = ___sys_recvmsg(sock, msg, &msg_sys, flags, 0); |
a2e27255 | 2352 | |
6cb153ca | 2353 | fput_light(sock->file, fput_needed); |
1da177e4 LT |
2354 | out: |
2355 | return err; | |
2356 | } | |
2357 | ||
a7526eb5 AL |
2358 | SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg, |
2359 | unsigned int, flags) | |
2360 | { | |
2361 | if (flags & MSG_CMSG_COMPAT) | |
2362 | return -EINVAL; | |
2363 | return __sys_recvmsg(fd, msg, flags); | |
2364 | } | |
2365 | ||
a2e27255 ACM |
2366 | /* |
2367 | * Linux recvmmsg interface | |
2368 | */ | |
2369 | ||
2370 | int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, | |
2371 | unsigned int flags, struct timespec *timeout) | |
2372 | { | |
2373 | int fput_needed, err, datagrams; | |
2374 | struct socket *sock; | |
2375 | struct mmsghdr __user *entry; | |
d7256d0e | 2376 | struct compat_mmsghdr __user *compat_entry; |
a2e27255 ACM |
2377 | struct msghdr msg_sys; |
2378 | struct timespec end_time; | |
2379 | ||
2380 | if (timeout && | |
2381 | poll_select_set_timeout(&end_time, timeout->tv_sec, | |
2382 | timeout->tv_nsec)) | |
2383 | return -EINVAL; | |
2384 | ||
2385 | datagrams = 0; | |
2386 | ||
2387 | sock = sockfd_lookup_light(fd, &err, &fput_needed); | |
2388 | if (!sock) | |
2389 | return err; | |
2390 | ||
2391 | err = sock_error(sock->sk); | |
0b5240c4 MJ |
2392 | if (err) { |
2393 | datagrams = err; | |
a2e27255 | 2394 | goto out_put; |
0b5240c4 | 2395 | } |
a2e27255 ACM |
2396 | |
2397 | entry = mmsg; | |
d7256d0e | 2398 | compat_entry = (struct compat_mmsghdr __user *)mmsg; |
a2e27255 ACM |
2399 | |
2400 | while (datagrams < vlen) { | |
2401 | /* | |
2402 | * No need to ask LSM for more than the first datagram. | |
2403 | */ | |
d7256d0e | 2404 | if (MSG_CMSG_COMPAT & flags) { |
a7526eb5 AL |
2405 | err = ___sys_recvmsg(sock, (struct msghdr __user *)compat_entry, |
2406 | &msg_sys, flags & ~MSG_WAITFORONE, | |
2407 | datagrams); | |
d7256d0e JMG |
2408 | if (err < 0) |
2409 | break; | |
2410 | err = __put_user(err, &compat_entry->msg_len); | |
2411 | ++compat_entry; | |
2412 | } else { | |
a7526eb5 AL |
2413 | err = ___sys_recvmsg(sock, |
2414 | (struct msghdr __user *)entry, | |
2415 | &msg_sys, flags & ~MSG_WAITFORONE, | |
2416 | datagrams); | |
d7256d0e JMG |
2417 | if (err < 0) |
2418 | break; | |
2419 | err = put_user(err, &entry->msg_len); | |
2420 | ++entry; | |
2421 | } | |
2422 | ||
a2e27255 ACM |
2423 | if (err) |
2424 | break; | |
a2e27255 ACM |
2425 | ++datagrams; |
2426 | ||
71c5c159 BB |
2427 | /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */ |
2428 | if (flags & MSG_WAITFORONE) | |
2429 | flags |= MSG_DONTWAIT; | |
2430 | ||
a2e27255 ACM |
2431 | if (timeout) { |
2432 | ktime_get_ts(timeout); | |
2433 | *timeout = timespec_sub(end_time, *timeout); | |
2434 | if (timeout->tv_sec < 0) { | |
2435 | timeout->tv_sec = timeout->tv_nsec = 0; | |
2436 | break; | |
2437 | } | |
2438 | ||
2439 | /* Timeout, return less than vlen datagrams */ | |
2440 | if (timeout->tv_nsec == 0 && timeout->tv_sec == 0) | |
2441 | break; | |
2442 | } | |
2443 | ||
2444 | /* Out of band data, return right away */ | |
2445 | if (msg_sys.msg_flags & MSG_OOB) | |
2446 | break; | |
2447 | } | |
2448 | ||
a2e27255 | 2449 | if (err == 0) |
8ba9ba1a | 2450 | goto out_put; |
4b9e9796 S |
2451 | |
2452 | if (datagrams == 0) { | |
2453 | datagrams = err; | |
2454 | goto out_put; | |
2455 | } | |
a2e27255 | 2456 | |
8ba9ba1a ACM |
2457 | /* |
2458 | * We may return less entries than requested (vlen) if the | |
2459 | * sock is non block and there aren't enough datagrams... | |
2460 | */ | |
2461 | if (err != -EAGAIN) { | |
a2e27255 | 2462 | /* |
8ba9ba1a ACM |
2463 | * ... or if recvmsg returns an error after we |
2464 | * received some datagrams, where we record the | |
2465 | * error to return on the next call or if the | |
2466 | * app asks about it using getsockopt(SO_ERROR). | |
a2e27255 | 2467 | */ |
8ba9ba1a | 2468 | sock->sk->sk_err = -err; |
a2e27255 | 2469 | } |
4b9e9796 S |
2470 | out_put: |
2471 | fput_light(sock->file, fput_needed); | |
a2e27255 | 2472 | |
4b9e9796 | 2473 | return datagrams; |
a2e27255 ACM |
2474 | } |
2475 | ||
2476 | SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg, | |
2477 | unsigned int, vlen, unsigned int, flags, | |
2478 | struct timespec __user *, timeout) | |
2479 | { | |
2480 | int datagrams; | |
2481 | struct timespec timeout_sys; | |
2482 | ||
1be374a0 AL |
2483 | if (flags & MSG_CMSG_COMPAT) |
2484 | return -EINVAL; | |
2485 | ||
a2e27255 ACM |
2486 | if (!timeout) |
2487 | return __sys_recvmmsg(fd, mmsg, vlen, flags, NULL); | |
2488 | ||
2489 | if (copy_from_user(&timeout_sys, timeout, sizeof(timeout_sys))) | |
2490 | return -EFAULT; | |
2491 | ||
2492 | datagrams = __sys_recvmmsg(fd, mmsg, vlen, flags, &timeout_sys); | |
2493 | ||
2494 | if (datagrams > 0 && | |
2495 | copy_to_user(timeout, &timeout_sys, sizeof(timeout_sys))) | |
2496 | datagrams = -EFAULT; | |
2497 | ||
2498 | return datagrams; | |
2499 | } | |
2500 | ||
2501 | #ifdef __ARCH_WANT_SYS_SOCKETCALL | |
1da177e4 LT |
2502 | /* Argument list sizes for sys_socketcall */ |
2503 | #define AL(x) ((x) * sizeof(unsigned long)) | |
228e548e | 2504 | static const unsigned char nargs[21] = { |
c6d409cf ED |
2505 | AL(0), AL(3), AL(3), AL(3), AL(2), AL(3), |
2506 | AL(3), AL(3), AL(4), AL(4), AL(4), AL(6), | |
2507 | AL(6), AL(2), AL(5), AL(5), AL(3), AL(3), | |
228e548e | 2508 | AL(4), AL(5), AL(4) |
89bddce5 SH |
2509 | }; |
2510 | ||
1da177e4 LT |
2511 | #undef AL |
2512 | ||
2513 | /* | |
89bddce5 | 2514 | * System call vectors. |
1da177e4 LT |
2515 | * |
2516 | * Argument checking cleaned up. Saved 20% in size. | |
2517 | * This function doesn't need to set the kernel lock because | |
89bddce5 | 2518 | * it is set by the callees. |
1da177e4 LT |
2519 | */ |
2520 | ||
3e0fa65f | 2521 | SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) |
1da177e4 | 2522 | { |
2950fa9d | 2523 | unsigned long a[AUDITSC_ARGS]; |
89bddce5 | 2524 | unsigned long a0, a1; |
1da177e4 | 2525 | int err; |
47379052 | 2526 | unsigned int len; |
1da177e4 | 2527 | |
228e548e | 2528 | if (call < 1 || call > SYS_SENDMMSG) |
1da177e4 LT |
2529 | return -EINVAL; |
2530 | ||
47379052 AV |
2531 | len = nargs[call]; |
2532 | if (len > sizeof(a)) | |
2533 | return -EINVAL; | |
2534 | ||
1da177e4 | 2535 | /* copy_from_user should be SMP safe. */ |
47379052 | 2536 | if (copy_from_user(a, args, len)) |
1da177e4 | 2537 | return -EFAULT; |
3ec3b2fb | 2538 | |
2950fa9d CG |
2539 | err = audit_socketcall(nargs[call] / sizeof(unsigned long), a); |
2540 | if (err) | |
2541 | return err; | |
3ec3b2fb | 2542 | |
89bddce5 SH |
2543 | a0 = a[0]; |
2544 | a1 = a[1]; | |
2545 | ||
2546 | switch (call) { | |
2547 | case SYS_SOCKET: | |
2548 | err = sys_socket(a0, a1, a[2]); | |
2549 | break; | |
2550 | case SYS_BIND: | |
2551 | err = sys_bind(a0, (struct sockaddr __user *)a1, a[2]); | |
2552 | break; | |
2553 | case SYS_CONNECT: | |
2554 | err = sys_connect(a0, (struct sockaddr __user *)a1, a[2]); | |
2555 | break; | |
2556 | case SYS_LISTEN: | |
2557 | err = sys_listen(a0, a1); | |
2558 | break; | |
2559 | case SYS_ACCEPT: | |
de11defe UD |
2560 | err = sys_accept4(a0, (struct sockaddr __user *)a1, |
2561 | (int __user *)a[2], 0); | |
89bddce5 SH |
2562 | break; |
2563 | case SYS_GETSOCKNAME: | |
2564 | err = | |
2565 | sys_getsockname(a0, (struct sockaddr __user *)a1, | |
2566 | (int __user *)a[2]); | |
2567 | break; | |
2568 | case SYS_GETPEERNAME: | |
2569 | err = | |
2570 | sys_getpeername(a0, (struct sockaddr __user *)a1, | |
2571 | (int __user *)a[2]); | |
2572 | break; | |
2573 | case SYS_SOCKETPAIR: | |
2574 | err = sys_socketpair(a0, a1, a[2], (int __user *)a[3]); | |
2575 | break; | |
2576 | case SYS_SEND: | |
2577 | err = sys_send(a0, (void __user *)a1, a[2], a[3]); | |
2578 | break; | |
2579 | case SYS_SENDTO: | |
2580 | err = sys_sendto(a0, (void __user *)a1, a[2], a[3], | |
2581 | (struct sockaddr __user *)a[4], a[5]); | |
2582 | break; | |
2583 | case SYS_RECV: | |
2584 | err = sys_recv(a0, (void __user *)a1, a[2], a[3]); | |
2585 | break; | |
2586 | case SYS_RECVFROM: | |
2587 | err = sys_recvfrom(a0, (void __user *)a1, a[2], a[3], | |
2588 | (struct sockaddr __user *)a[4], | |
2589 | (int __user *)a[5]); | |
2590 | break; | |
2591 | case SYS_SHUTDOWN: | |
2592 | err = sys_shutdown(a0, a1); | |
2593 | break; | |
2594 | case SYS_SETSOCKOPT: | |
2595 | err = sys_setsockopt(a0, a1, a[2], (char __user *)a[3], a[4]); | |
2596 | break; | |
2597 | case SYS_GETSOCKOPT: | |
2598 | err = | |
2599 | sys_getsockopt(a0, a1, a[2], (char __user *)a[3], | |
2600 | (int __user *)a[4]); | |
2601 | break; | |
2602 | case SYS_SENDMSG: | |
2603 | err = sys_sendmsg(a0, (struct msghdr __user *)a1, a[2]); | |
2604 | break; | |
228e548e AB |
2605 | case SYS_SENDMMSG: |
2606 | err = sys_sendmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3]); | |
2607 | break; | |
89bddce5 SH |
2608 | case SYS_RECVMSG: |
2609 | err = sys_recvmsg(a0, (struct msghdr __user *)a1, a[2]); | |
2610 | break; | |
a2e27255 ACM |
2611 | case SYS_RECVMMSG: |
2612 | err = sys_recvmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3], | |
2613 | (struct timespec __user *)a[4]); | |
2614 | break; | |
de11defe UD |
2615 | case SYS_ACCEPT4: |
2616 | err = sys_accept4(a0, (struct sockaddr __user *)a1, | |
2617 | (int __user *)a[2], a[3]); | |
aaca0bdc | 2618 | break; |
89bddce5 SH |
2619 | default: |
2620 | err = -EINVAL; | |
2621 | break; | |
1da177e4 LT |
2622 | } |
2623 | return err; | |
2624 | } | |
2625 | ||
89bddce5 | 2626 | #endif /* __ARCH_WANT_SYS_SOCKETCALL */ |
1da177e4 | 2627 | |
55737fda SH |
2628 | /** |
2629 | * sock_register - add a socket protocol handler | |
2630 | * @ops: description of protocol | |
2631 | * | |
1da177e4 LT |
2632 | * This function is called by a protocol handler that wants to |
2633 | * advertise its address family, and have it linked into the | |
55737fda SH |
2634 | * socket interface. The value ops->family coresponds to the |
2635 | * socket system call protocol family. | |
1da177e4 | 2636 | */ |
f0fd27d4 | 2637 | int sock_register(const struct net_proto_family *ops) |
1da177e4 LT |
2638 | { |
2639 | int err; | |
2640 | ||
2641 | if (ops->family >= NPROTO) { | |
6fa3eb70 | 2642 | printk(KERN_CRIT "[mtk_net][sock]protocol %d >= NPROTO(%d)\n", ops->family, |
89bddce5 | 2643 | NPROTO); |
1da177e4 LT |
2644 | return -ENOBUFS; |
2645 | } | |
55737fda SH |
2646 | |
2647 | spin_lock(&net_family_lock); | |
190683a9 ED |
2648 | if (rcu_dereference_protected(net_families[ops->family], |
2649 | lockdep_is_held(&net_family_lock))) | |
55737fda SH |
2650 | err = -EEXIST; |
2651 | else { | |
cf778b00 | 2652 | rcu_assign_pointer(net_families[ops->family], ops); |
1da177e4 LT |
2653 | err = 0; |
2654 | } | |
55737fda | 2655 | spin_unlock(&net_family_lock); |
6fa3eb70 S |
2656 | #ifdef CONFIG_MTK_NET_LOGGING |
2657 | printk(KERN_INFO "[mtk_net][socekt]NET: Registered protocol family %d\n", ops->family); | |
2658 | #endif | |
1da177e4 LT |
2659 | return err; |
2660 | } | |
c6d409cf | 2661 | EXPORT_SYMBOL(sock_register); |
1da177e4 | 2662 | |
55737fda SH |
2663 | /** |
2664 | * sock_unregister - remove a protocol handler | |
2665 | * @family: protocol family to remove | |
2666 | * | |
1da177e4 LT |
2667 | * This function is called by a protocol handler that wants to |
2668 | * remove its address family, and have it unlinked from the | |
55737fda SH |
2669 | * new socket creation. |
2670 | * | |
2671 | * If protocol handler is a module, then it can use module reference | |
2672 | * counts to protect against new references. If protocol handler is not | |
2673 | * a module then it needs to provide its own protection in | |
2674 | * the ops->create routine. | |
1da177e4 | 2675 | */ |
f0fd27d4 | 2676 | void sock_unregister(int family) |
1da177e4 | 2677 | { |
f0fd27d4 | 2678 | BUG_ON(family < 0 || family >= NPROTO); |
1da177e4 | 2679 | |
55737fda | 2680 | spin_lock(&net_family_lock); |
a9b3cd7f | 2681 | RCU_INIT_POINTER(net_families[family], NULL); |
55737fda SH |
2682 | spin_unlock(&net_family_lock); |
2683 | ||
2684 | synchronize_rcu(); | |
6fa3eb70 S |
2685 | #ifdef CONFIG_MTK_NET_LOGGING |
2686 | printk(KERN_INFO "[mtk_net][socket]NET: Unregistered protocol family %d\n", family); | |
2687 | #endif | |
1da177e4 | 2688 | } |
c6d409cf | 2689 | EXPORT_SYMBOL(sock_unregister); |
1da177e4 | 2690 | |
77d76ea3 | 2691 | static int __init sock_init(void) |
1da177e4 | 2692 | { |
b3e19d92 | 2693 | int err; |
2ca794e5 EB |
2694 | /* |
2695 | * Initialize the network sysctl infrastructure. | |
2696 | */ | |
2697 | err = net_sysctl_init(); | |
2698 | if (err) | |
2699 | goto out; | |
b3e19d92 | 2700 | |
1da177e4 | 2701 | /* |
89bddce5 | 2702 | * Initialize skbuff SLAB cache |
1da177e4 LT |
2703 | */ |
2704 | skb_init(); | |
1da177e4 LT |
2705 | |
2706 | /* | |
89bddce5 | 2707 | * Initialize the protocols module. |
1da177e4 LT |
2708 | */ |
2709 | ||
2710 | init_inodecache(); | |
b3e19d92 NP |
2711 | |
2712 | err = register_filesystem(&sock_fs_type); | |
2713 | if (err) | |
2714 | goto out_fs; | |
1da177e4 | 2715 | sock_mnt = kern_mount(&sock_fs_type); |
b3e19d92 NP |
2716 | if (IS_ERR(sock_mnt)) { |
2717 | err = PTR_ERR(sock_mnt); | |
2718 | goto out_mount; | |
2719 | } | |
77d76ea3 AK |
2720 | |
2721 | /* The real protocol initialization is performed in later initcalls. | |
1da177e4 LT |
2722 | */ |
2723 | ||
2724 | #ifdef CONFIG_NETFILTER | |
2725 | netfilter_init(); | |
2726 | #endif | |
cbeb321a | 2727 | |
c1f19b51 RC |
2728 | #ifdef CONFIG_NETWORK_PHY_TIMESTAMPING |
2729 | skb_timestamping_init(); | |
2730 | #endif | |
2731 | ||
b3e19d92 NP |
2732 | out: |
2733 | return err; | |
2734 | ||
2735 | out_mount: | |
2736 | unregister_filesystem(&sock_fs_type); | |
2737 | out_fs: | |
2738 | goto out; | |
1da177e4 LT |
2739 | } |
2740 | ||
77d76ea3 AK |
2741 | core_initcall(sock_init); /* early initcall */ |
2742 | ||
1da177e4 LT |
2743 | #ifdef CONFIG_PROC_FS |
2744 | void socket_seq_show(struct seq_file *seq) | |
2745 | { | |
2746 | int cpu; | |
2747 | int counter = 0; | |
2748 | ||
6f912042 | 2749 | for_each_possible_cpu(cpu) |
89bddce5 | 2750 | counter += per_cpu(sockets_in_use, cpu); |
1da177e4 LT |
2751 | |
2752 | /* It can be negative, by the way. 8) */ | |
2753 | if (counter < 0) | |
2754 | counter = 0; | |
2755 | ||
2756 | seq_printf(seq, "sockets: used %d\n", counter); | |
2757 | } | |
89bddce5 | 2758 | #endif /* CONFIG_PROC_FS */ |
1da177e4 | 2759 | |
89bbfc95 | 2760 | #ifdef CONFIG_COMPAT |
6b96018b | 2761 | static int do_siocgstamp(struct net *net, struct socket *sock, |
644595f8 | 2762 | unsigned int cmd, void __user *up) |
7a229387 | 2763 | { |
7a229387 AB |
2764 | mm_segment_t old_fs = get_fs(); |
2765 | struct timeval ktv; | |
2766 | int err; | |
2767 | ||
2768 | set_fs(KERNEL_DS); | |
6b96018b | 2769 | err = sock_do_ioctl(net, sock, cmd, (unsigned long)&ktv); |
7a229387 | 2770 | set_fs(old_fs); |
644595f8 | 2771 | if (!err) |
ed6fe9d6 | 2772 | err = compat_put_timeval(&ktv, up); |
644595f8 | 2773 | |
7a229387 AB |
2774 | return err; |
2775 | } | |
2776 | ||
6b96018b | 2777 | static int do_siocgstampns(struct net *net, struct socket *sock, |
644595f8 | 2778 | unsigned int cmd, void __user *up) |
7a229387 | 2779 | { |
7a229387 AB |
2780 | mm_segment_t old_fs = get_fs(); |
2781 | struct timespec kts; | |
2782 | int err; | |
2783 | ||
2784 | set_fs(KERNEL_DS); | |
6b96018b | 2785 | err = sock_do_ioctl(net, sock, cmd, (unsigned long)&kts); |
7a229387 | 2786 | set_fs(old_fs); |
644595f8 | 2787 | if (!err) |
ed6fe9d6 | 2788 | err = compat_put_timespec(&kts, up); |
644595f8 | 2789 | |
7a229387 AB |
2790 | return err; |
2791 | } | |
2792 | ||
6b96018b | 2793 | static int dev_ifname32(struct net *net, struct compat_ifreq __user *uifr32) |
7a229387 AB |
2794 | { |
2795 | struct ifreq __user *uifr; | |
2796 | int err; | |
2797 | ||
2798 | uifr = compat_alloc_user_space(sizeof(struct ifreq)); | |
6b96018b | 2799 | if (copy_in_user(uifr, uifr32, sizeof(struct compat_ifreq))) |
7a229387 AB |
2800 | return -EFAULT; |
2801 | ||
6b96018b | 2802 | err = dev_ioctl(net, SIOCGIFNAME, uifr); |
7a229387 AB |
2803 | if (err) |
2804 | return err; | |
2805 | ||
6b96018b | 2806 | if (copy_in_user(uifr32, uifr, sizeof(struct compat_ifreq))) |
7a229387 AB |
2807 | return -EFAULT; |
2808 | ||
2809 | return 0; | |
2810 | } | |
2811 | ||
6b96018b | 2812 | static int dev_ifconf(struct net *net, struct compat_ifconf __user *uifc32) |
7a229387 | 2813 | { |
6b96018b | 2814 | struct compat_ifconf ifc32; |
7a229387 AB |
2815 | struct ifconf ifc; |
2816 | struct ifconf __user *uifc; | |
6b96018b | 2817 | struct compat_ifreq __user *ifr32; |
7a229387 AB |
2818 | struct ifreq __user *ifr; |
2819 | unsigned int i, j; | |
2820 | int err; | |
2821 | ||
6b96018b | 2822 | if (copy_from_user(&ifc32, uifc32, sizeof(struct compat_ifconf))) |
7a229387 AB |
2823 | return -EFAULT; |
2824 | ||
43da5f2e | 2825 | memset(&ifc, 0, sizeof(ifc)); |
7a229387 AB |
2826 | if (ifc32.ifcbuf == 0) { |
2827 | ifc32.ifc_len = 0; | |
2828 | ifc.ifc_len = 0; | |
2829 | ifc.ifc_req = NULL; | |
2830 | uifc = compat_alloc_user_space(sizeof(struct ifconf)); | |
2831 | } else { | |
c6d409cf ED |
2832 | size_t len = ((ifc32.ifc_len / sizeof(struct compat_ifreq)) + 1) * |
2833 | sizeof(struct ifreq); | |
7a229387 AB |
2834 | uifc = compat_alloc_user_space(sizeof(struct ifconf) + len); |
2835 | ifc.ifc_len = len; | |
2836 | ifr = ifc.ifc_req = (void __user *)(uifc + 1); | |
2837 | ifr32 = compat_ptr(ifc32.ifcbuf); | |
c6d409cf | 2838 | for (i = 0; i < ifc32.ifc_len; i += sizeof(struct compat_ifreq)) { |
6b96018b | 2839 | if (copy_in_user(ifr, ifr32, sizeof(struct compat_ifreq))) |
7a229387 AB |
2840 | return -EFAULT; |
2841 | ifr++; | |
2842 | ifr32++; | |
2843 | } | |
2844 | } | |
2845 | if (copy_to_user(uifc, &ifc, sizeof(struct ifconf))) | |
2846 | return -EFAULT; | |
2847 | ||
6b96018b | 2848 | err = dev_ioctl(net, SIOCGIFCONF, uifc); |
7a229387 AB |
2849 | if (err) |
2850 | return err; | |
2851 | ||
2852 | if (copy_from_user(&ifc, uifc, sizeof(struct ifconf))) | |
2853 | return -EFAULT; | |
2854 | ||
2855 | ifr = ifc.ifc_req; | |
2856 | ifr32 = compat_ptr(ifc32.ifcbuf); | |
2857 | for (i = 0, j = 0; | |
c6d409cf ED |
2858 | i + sizeof(struct compat_ifreq) <= ifc32.ifc_len && j < ifc.ifc_len; |
2859 | i += sizeof(struct compat_ifreq), j += sizeof(struct ifreq)) { | |
2860 | if (copy_in_user(ifr32, ifr, sizeof(struct compat_ifreq))) | |
7a229387 AB |
2861 | return -EFAULT; |
2862 | ifr32++; | |
2863 | ifr++; | |
2864 | } | |
2865 | ||
2866 | if (ifc32.ifcbuf == 0) { | |
2867 | /* Translate from 64-bit structure multiple to | |
2868 | * a 32-bit one. | |
2869 | */ | |
2870 | i = ifc.ifc_len; | |
6b96018b | 2871 | i = ((i / sizeof(struct ifreq)) * sizeof(struct compat_ifreq)); |
7a229387 AB |
2872 | ifc32.ifc_len = i; |
2873 | } else { | |
2874 | ifc32.ifc_len = i; | |
2875 | } | |
6b96018b | 2876 | if (copy_to_user(uifc32, &ifc32, sizeof(struct compat_ifconf))) |
7a229387 AB |
2877 | return -EFAULT; |
2878 | ||
2879 | return 0; | |
2880 | } | |
2881 | ||
6b96018b | 2882 | static int ethtool_ioctl(struct net *net, struct compat_ifreq __user *ifr32) |
7a229387 | 2883 | { |
3a7da39d BH |
2884 | struct compat_ethtool_rxnfc __user *compat_rxnfc; |
2885 | bool convert_in = false, convert_out = false; | |
2886 | size_t buf_size = ALIGN(sizeof(struct ifreq), 8); | |
2887 | struct ethtool_rxnfc __user *rxnfc; | |
7a229387 | 2888 | struct ifreq __user *ifr; |
3a7da39d BH |
2889 | u32 rule_cnt = 0, actual_rule_cnt; |
2890 | u32 ethcmd; | |
7a229387 | 2891 | u32 data; |
3a7da39d | 2892 | int ret; |
7a229387 | 2893 | |
3a7da39d BH |
2894 | if (get_user(data, &ifr32->ifr_ifru.ifru_data)) |
2895 | return -EFAULT; | |
7a229387 | 2896 | |
3a7da39d BH |
2897 | compat_rxnfc = compat_ptr(data); |
2898 | ||
2899 | if (get_user(ethcmd, &compat_rxnfc->cmd)) | |
7a229387 AB |
2900 | return -EFAULT; |
2901 | ||
3a7da39d BH |
2902 | /* Most ethtool structures are defined without padding. |
2903 | * Unfortunately struct ethtool_rxnfc is an exception. | |
2904 | */ | |
2905 | switch (ethcmd) { | |
2906 | default: | |
2907 | break; | |
2908 | case ETHTOOL_GRXCLSRLALL: | |
2909 | /* Buffer size is variable */ | |
2910 | if (get_user(rule_cnt, &compat_rxnfc->rule_cnt)) | |
2911 | return -EFAULT; | |
2912 | if (rule_cnt > KMALLOC_MAX_SIZE / sizeof(u32)) | |
2913 | return -ENOMEM; | |
2914 | buf_size += rule_cnt * sizeof(u32); | |
2915 | /* fall through */ | |
2916 | case ETHTOOL_GRXRINGS: | |
2917 | case ETHTOOL_GRXCLSRLCNT: | |
2918 | case ETHTOOL_GRXCLSRULE: | |
55664f32 | 2919 | case ETHTOOL_SRXCLSRLINS: |
3a7da39d BH |
2920 | convert_out = true; |
2921 | /* fall through */ | |
2922 | case ETHTOOL_SRXCLSRLDEL: | |
3a7da39d BH |
2923 | buf_size += sizeof(struct ethtool_rxnfc); |
2924 | convert_in = true; | |
2925 | break; | |
2926 | } | |
2927 | ||
2928 | ifr = compat_alloc_user_space(buf_size); | |
954b1244 | 2929 | rxnfc = (void __user *)ifr + ALIGN(sizeof(struct ifreq), 8); |
3a7da39d BH |
2930 | |
2931 | if (copy_in_user(&ifr->ifr_name, &ifr32->ifr_name, IFNAMSIZ)) | |
7a229387 AB |
2932 | return -EFAULT; |
2933 | ||
3a7da39d BH |
2934 | if (put_user(convert_in ? rxnfc : compat_ptr(data), |
2935 | &ifr->ifr_ifru.ifru_data)) | |
7a229387 AB |
2936 | return -EFAULT; |
2937 | ||
3a7da39d | 2938 | if (convert_in) { |
127fe533 | 2939 | /* We expect there to be holes between fs.m_ext and |
3a7da39d BH |
2940 | * fs.ring_cookie and at the end of fs, but nowhere else. |
2941 | */ | |
127fe533 AD |
2942 | BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + |
2943 | sizeof(compat_rxnfc->fs.m_ext) != | |
2944 | offsetof(struct ethtool_rxnfc, fs.m_ext) + | |
2945 | sizeof(rxnfc->fs.m_ext)); | |
3a7da39d BH |
2946 | BUILD_BUG_ON( |
2947 | offsetof(struct compat_ethtool_rxnfc, fs.location) - | |
2948 | offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != | |
2949 | offsetof(struct ethtool_rxnfc, fs.location) - | |
2950 | offsetof(struct ethtool_rxnfc, fs.ring_cookie)); | |
2951 | ||
2952 | if (copy_in_user(rxnfc, compat_rxnfc, | |
954b1244 SH |
2953 | (void __user *)(&rxnfc->fs.m_ext + 1) - |
2954 | (void __user *)rxnfc) || | |
3a7da39d BH |
2955 | copy_in_user(&rxnfc->fs.ring_cookie, |
2956 | &compat_rxnfc->fs.ring_cookie, | |
954b1244 SH |
2957 | (void __user *)(&rxnfc->fs.location + 1) - |
2958 | (void __user *)&rxnfc->fs.ring_cookie) || | |
3a7da39d BH |
2959 | copy_in_user(&rxnfc->rule_cnt, &compat_rxnfc->rule_cnt, |
2960 | sizeof(rxnfc->rule_cnt))) | |
2961 | return -EFAULT; | |
2962 | } | |
2963 | ||
2964 | ret = dev_ioctl(net, SIOCETHTOOL, ifr); | |
2965 | if (ret) | |
2966 | return ret; | |
2967 | ||
2968 | if (convert_out) { | |
2969 | if (copy_in_user(compat_rxnfc, rxnfc, | |
954b1244 SH |
2970 | (const void __user *)(&rxnfc->fs.m_ext + 1) - |
2971 | (const void __user *)rxnfc) || | |
3a7da39d BH |
2972 | copy_in_user(&compat_rxnfc->fs.ring_cookie, |
2973 | &rxnfc->fs.ring_cookie, | |
954b1244 SH |
2974 | (const void __user *)(&rxnfc->fs.location + 1) - |
2975 | (const void __user *)&rxnfc->fs.ring_cookie) || | |
3a7da39d BH |
2976 | copy_in_user(&compat_rxnfc->rule_cnt, &rxnfc->rule_cnt, |
2977 | sizeof(rxnfc->rule_cnt))) | |
2978 | return -EFAULT; | |
2979 | ||
2980 | if (ethcmd == ETHTOOL_GRXCLSRLALL) { | |
2981 | /* As an optimisation, we only copy the actual | |
2982 | * number of rules that the underlying | |
2983 | * function returned. Since Mallory might | |
2984 | * change the rule count in user memory, we | |
2985 | * check that it is less than the rule count | |
2986 | * originally given (as the user buffer size), | |
2987 | * which has been range-checked. | |
2988 | */ | |
2989 | if (get_user(actual_rule_cnt, &rxnfc->rule_cnt)) | |
2990 | return -EFAULT; | |
2991 | if (actual_rule_cnt < rule_cnt) | |
2992 | rule_cnt = actual_rule_cnt; | |
2993 | if (copy_in_user(&compat_rxnfc->rule_locs[0], | |
2994 | &rxnfc->rule_locs[0], | |
2995 | rule_cnt * sizeof(u32))) | |
2996 | return -EFAULT; | |
2997 | } | |
2998 | } | |
2999 | ||
3000 | return 0; | |
7a229387 AB |
3001 | } |
3002 | ||
7a50a240 AB |
3003 | static int compat_siocwandev(struct net *net, struct compat_ifreq __user *uifr32) |
3004 | { | |
3005 | void __user *uptr; | |
3006 | compat_uptr_t uptr32; | |
3007 | struct ifreq __user *uifr; | |
3008 | ||
c6d409cf | 3009 | uifr = compat_alloc_user_space(sizeof(*uifr)); |
7a50a240 AB |
3010 | if (copy_in_user(uifr, uifr32, sizeof(struct compat_ifreq))) |
3011 | return -EFAULT; | |
3012 | ||
3013 | if (get_user(uptr32, &uifr32->ifr_settings.ifs_ifsu)) | |
3014 | return -EFAULT; | |
3015 | ||
3016 | uptr = compat_ptr(uptr32); | |
3017 | ||
3018 | if (put_user(uptr, &uifr->ifr_settings.ifs_ifsu.raw_hdlc)) | |
3019 | return -EFAULT; | |
3020 | ||
3021 | return dev_ioctl(net, SIOCWANDEV, uifr); | |
3022 | } | |
3023 | ||
6b96018b AB |
3024 | static int bond_ioctl(struct net *net, unsigned int cmd, |
3025 | struct compat_ifreq __user *ifr32) | |
7a229387 AB |
3026 | { |
3027 | struct ifreq kifr; | |
3028 | struct ifreq __user *uifr; | |
7a229387 AB |
3029 | mm_segment_t old_fs; |
3030 | int err; | |
3031 | u32 data; | |
3032 | void __user *datap; | |
3033 | ||
3034 | switch (cmd) { | |
3035 | case SIOCBONDENSLAVE: | |
3036 | case SIOCBONDRELEASE: | |
3037 | case SIOCBONDSETHWADDR: | |
3038 | case SIOCBONDCHANGEACTIVE: | |
6b96018b | 3039 | if (copy_from_user(&kifr, ifr32, sizeof(struct compat_ifreq))) |
7a229387 AB |
3040 | return -EFAULT; |
3041 | ||
3042 | old_fs = get_fs(); | |
c6d409cf | 3043 | set_fs(KERNEL_DS); |
c3f52ae6 | 3044 | err = dev_ioctl(net, cmd, |
3045 | (struct ifreq __user __force *) &kifr); | |
c6d409cf | 3046 | set_fs(old_fs); |
7a229387 AB |
3047 | |
3048 | return err; | |
3049 | case SIOCBONDSLAVEINFOQUERY: | |
3050 | case SIOCBONDINFOQUERY: | |
3051 | uifr = compat_alloc_user_space(sizeof(*uifr)); | |
3052 | if (copy_in_user(&uifr->ifr_name, &ifr32->ifr_name, IFNAMSIZ)) | |
3053 | return -EFAULT; | |
3054 | ||
3055 | if (get_user(data, &ifr32->ifr_ifru.ifru_data)) | |
3056 | return -EFAULT; | |
3057 | ||
3058 | datap = compat_ptr(data); | |
3059 | if (put_user(datap, &uifr->ifr_ifru.ifru_data)) | |
3060 | return -EFAULT; | |
3061 | ||
6b96018b | 3062 | return dev_ioctl(net, cmd, uifr); |
7a229387 | 3063 | default: |
07d106d0 | 3064 | return -ENOIOCTLCMD; |
ccbd6a5a | 3065 | } |
7a229387 AB |
3066 | } |
3067 | ||
6b96018b AB |
3068 | static int siocdevprivate_ioctl(struct net *net, unsigned int cmd, |
3069 | struct compat_ifreq __user *u_ifreq32) | |
7a229387 AB |
3070 | { |
3071 | struct ifreq __user *u_ifreq64; | |
7a229387 AB |
3072 | char tmp_buf[IFNAMSIZ]; |
3073 | void __user *data64; | |
3074 | u32 data32; | |
3075 | ||
3076 | if (copy_from_user(&tmp_buf[0], &(u_ifreq32->ifr_ifrn.ifrn_name[0]), | |
3077 | IFNAMSIZ)) | |
3078 | return -EFAULT; | |
3079 | if (__get_user(data32, &u_ifreq32->ifr_ifru.ifru_data)) | |
3080 | return -EFAULT; | |
3081 | data64 = compat_ptr(data32); | |
3082 | ||
3083 | u_ifreq64 = compat_alloc_user_space(sizeof(*u_ifreq64)); | |
3084 | ||
3085 | /* Don't check these user accesses, just let that get trapped | |
3086 | * in the ioctl handler instead. | |
3087 | */ | |
3088 | if (copy_to_user(&u_ifreq64->ifr_ifrn.ifrn_name[0], &tmp_buf[0], | |
3089 | IFNAMSIZ)) | |
3090 | return -EFAULT; | |
3091 | if (__put_user(data64, &u_ifreq64->ifr_ifru.ifru_data)) | |
3092 | return -EFAULT; | |
3093 | ||
6b96018b | 3094 | return dev_ioctl(net, cmd, u_ifreq64); |
7a229387 AB |
3095 | } |
3096 | ||
6b96018b AB |
3097 | static int dev_ifsioc(struct net *net, struct socket *sock, |
3098 | unsigned int cmd, struct compat_ifreq __user *uifr32) | |
7a229387 | 3099 | { |
a2116ed2 | 3100 | struct ifreq __user *uifr; |
7a229387 AB |
3101 | int err; |
3102 | ||
a2116ed2 AB |
3103 | uifr = compat_alloc_user_space(sizeof(*uifr)); |
3104 | if (copy_in_user(uifr, uifr32, sizeof(*uifr32))) | |
3105 | return -EFAULT; | |
3106 | ||
3107 | err = sock_do_ioctl(net, sock, cmd, (unsigned long)uifr); | |
3108 | ||
7a229387 AB |
3109 | if (!err) { |
3110 | switch (cmd) { | |
3111 | case SIOCGIFFLAGS: | |
3112 | case SIOCGIFMETRIC: | |
3113 | case SIOCGIFMTU: | |
3114 | case SIOCGIFMEM: | |
3115 | case SIOCGIFHWADDR: | |
3116 | case SIOCGIFINDEX: | |
3117 | case SIOCGIFADDR: | |
3118 | case SIOCGIFBRDADDR: | |
3119 | case SIOCGIFDSTADDR: | |
3120 | case SIOCGIFNETMASK: | |
fab2532b | 3121 | case SIOCGIFPFLAGS: |
7a229387 | 3122 | case SIOCGIFTXQLEN: |
fab2532b AB |
3123 | case SIOCGMIIPHY: |
3124 | case SIOCGMIIREG: | |
a2116ed2 | 3125 | if (copy_in_user(uifr32, uifr, sizeof(*uifr32))) |
7a229387 AB |
3126 | err = -EFAULT; |
3127 | break; | |
3128 | } | |
3129 | } | |
3130 | return err; | |
3131 | } | |
3132 | ||
a2116ed2 AB |
3133 | static int compat_sioc_ifmap(struct net *net, unsigned int cmd, |
3134 | struct compat_ifreq __user *uifr32) | |
3135 | { | |
3136 | struct ifreq ifr; | |
3137 | struct compat_ifmap __user *uifmap32; | |
3138 | mm_segment_t old_fs; | |
3139 | int err; | |
3140 | ||
3141 | uifmap32 = &uifr32->ifr_ifru.ifru_map; | |
3142 | err = copy_from_user(&ifr, uifr32, sizeof(ifr.ifr_name)); | |
3143 | err |= __get_user(ifr.ifr_map.mem_start, &uifmap32->mem_start); | |
3144 | err |= __get_user(ifr.ifr_map.mem_end, &uifmap32->mem_end); | |
3145 | err |= __get_user(ifr.ifr_map.base_addr, &uifmap32->base_addr); | |
3146 | err |= __get_user(ifr.ifr_map.irq, &uifmap32->irq); | |
3147 | err |= __get_user(ifr.ifr_map.dma, &uifmap32->dma); | |
3148 | err |= __get_user(ifr.ifr_map.port, &uifmap32->port); | |
3149 | if (err) | |
3150 | return -EFAULT; | |
3151 | ||
3152 | old_fs = get_fs(); | |
c6d409cf | 3153 | set_fs(KERNEL_DS); |
c3f52ae6 | 3154 | err = dev_ioctl(net, cmd, (void __user __force *)&ifr); |
c6d409cf | 3155 | set_fs(old_fs); |
a2116ed2 AB |
3156 | |
3157 | if (cmd == SIOCGIFMAP && !err) { | |
3158 | err = copy_to_user(uifr32, &ifr, sizeof(ifr.ifr_name)); | |
3159 | err |= __put_user(ifr.ifr_map.mem_start, &uifmap32->mem_start); | |
3160 | err |= __put_user(ifr.ifr_map.mem_end, &uifmap32->mem_end); | |
3161 | err |= __put_user(ifr.ifr_map.base_addr, &uifmap32->base_addr); | |
3162 | err |= __put_user(ifr.ifr_map.irq, &uifmap32->irq); | |
3163 | err |= __put_user(ifr.ifr_map.dma, &uifmap32->dma); | |
3164 | err |= __put_user(ifr.ifr_map.port, &uifmap32->port); | |
3165 | if (err) | |
3166 | err = -EFAULT; | |
3167 | } | |
3168 | return err; | |
3169 | } | |
3170 | ||
3171 | static int compat_siocshwtstamp(struct net *net, struct compat_ifreq __user *uifr32) | |
3172 | { | |
3173 | void __user *uptr; | |
3174 | compat_uptr_t uptr32; | |
3175 | struct ifreq __user *uifr; | |
3176 | ||
c6d409cf | 3177 | uifr = compat_alloc_user_space(sizeof(*uifr)); |
a2116ed2 AB |
3178 | if (copy_in_user(uifr, uifr32, sizeof(struct compat_ifreq))) |
3179 | return -EFAULT; | |
3180 | ||
3181 | if (get_user(uptr32, &uifr32->ifr_data)) | |
3182 | return -EFAULT; | |
3183 | ||
3184 | uptr = compat_ptr(uptr32); | |
3185 | ||
3186 | if (put_user(uptr, &uifr->ifr_data)) | |
3187 | return -EFAULT; | |
3188 | ||
3189 | return dev_ioctl(net, SIOCSHWTSTAMP, uifr); | |
3190 | } | |
3191 | ||
7a229387 | 3192 | struct rtentry32 { |
c6d409cf | 3193 | u32 rt_pad1; |
7a229387 AB |
3194 | struct sockaddr rt_dst; /* target address */ |
3195 | struct sockaddr rt_gateway; /* gateway addr (RTF_GATEWAY) */ | |
3196 | struct sockaddr rt_genmask; /* target network mask (IP) */ | |
c6d409cf ED |
3197 | unsigned short rt_flags; |
3198 | short rt_pad2; | |
3199 | u32 rt_pad3; | |
3200 | unsigned char rt_tos; | |
3201 | unsigned char rt_class; | |
3202 | short rt_pad4; | |
3203 | short rt_metric; /* +1 for binary compatibility! */ | |
7a229387 | 3204 | /* char * */ u32 rt_dev; /* forcing the device at add */ |
c6d409cf ED |
3205 | u32 rt_mtu; /* per route MTU/Window */ |
3206 | u32 rt_window; /* Window clamping */ | |
7a229387 AB |
3207 | unsigned short rt_irtt; /* Initial RTT */ |
3208 | }; | |
3209 | ||
3210 | struct in6_rtmsg32 { | |
3211 | struct in6_addr rtmsg_dst; | |
3212 | struct in6_addr rtmsg_src; | |
3213 | struct in6_addr rtmsg_gateway; | |
3214 | u32 rtmsg_type; | |
3215 | u16 rtmsg_dst_len; | |
3216 | u16 rtmsg_src_len; | |
3217 | u32 rtmsg_metric; | |
3218 | u32 rtmsg_info; | |
3219 | u32 rtmsg_flags; | |
3220 | s32 rtmsg_ifindex; | |
3221 | }; | |
3222 | ||
6b96018b AB |
3223 | static int routing_ioctl(struct net *net, struct socket *sock, |
3224 | unsigned int cmd, void __user *argp) | |
7a229387 AB |
3225 | { |
3226 | int ret; | |
3227 | void *r = NULL; | |
3228 | struct in6_rtmsg r6; | |
3229 | struct rtentry r4; | |
3230 | char devname[16]; | |
3231 | u32 rtdev; | |
3232 | mm_segment_t old_fs = get_fs(); | |
3233 | ||
6b96018b AB |
3234 | if (sock && sock->sk && sock->sk->sk_family == AF_INET6) { /* ipv6 */ |
3235 | struct in6_rtmsg32 __user *ur6 = argp; | |
c6d409cf | 3236 | ret = copy_from_user(&r6.rtmsg_dst, &(ur6->rtmsg_dst), |
7a229387 | 3237 | 3 * sizeof(struct in6_addr)); |
c6d409cf ED |
3238 | ret |= __get_user(r6.rtmsg_type, &(ur6->rtmsg_type)); |
3239 | ret |= __get_user(r6.rtmsg_dst_len, &(ur6->rtmsg_dst_len)); | |
3240 | ret |= __get_user(r6.rtmsg_src_len, &(ur6->rtmsg_src_len)); | |
3241 | ret |= __get_user(r6.rtmsg_metric, &(ur6->rtmsg_metric)); | |
3242 | ret |= __get_user(r6.rtmsg_info, &(ur6->rtmsg_info)); | |
3243 | ret |= __get_user(r6.rtmsg_flags, &(ur6->rtmsg_flags)); | |
3244 | ret |= __get_user(r6.rtmsg_ifindex, &(ur6->rtmsg_ifindex)); | |
7a229387 AB |
3245 | |
3246 | r = (void *) &r6; | |
3247 | } else { /* ipv4 */ | |
6b96018b | 3248 | struct rtentry32 __user *ur4 = argp; |
c6d409cf | 3249 | ret = copy_from_user(&r4.rt_dst, &(ur4->rt_dst), |
7a229387 | 3250 | 3 * sizeof(struct sockaddr)); |
c6d409cf ED |
3251 | ret |= __get_user(r4.rt_flags, &(ur4->rt_flags)); |
3252 | ret |= __get_user(r4.rt_metric, &(ur4->rt_metric)); | |
3253 | ret |= __get_user(r4.rt_mtu, &(ur4->rt_mtu)); | |
3254 | ret |= __get_user(r4.rt_window, &(ur4->rt_window)); | |
3255 | ret |= __get_user(r4.rt_irtt, &(ur4->rt_irtt)); | |
3256 | ret |= __get_user(rtdev, &(ur4->rt_dev)); | |
7a229387 | 3257 | if (rtdev) { |
c6d409cf | 3258 | ret |= copy_from_user(devname, compat_ptr(rtdev), 15); |
c3f52ae6 | 3259 | r4.rt_dev = (char __user __force *)devname; |
3260 | devname[15] = 0; | |
7a229387 AB |
3261 | } else |
3262 | r4.rt_dev = NULL; | |
3263 | ||
3264 | r = (void *) &r4; | |
3265 | } | |
3266 | ||
3267 | if (ret) { | |
3268 | ret = -EFAULT; | |
3269 | goto out; | |
3270 | } | |
3271 | ||
c6d409cf | 3272 | set_fs(KERNEL_DS); |
6b96018b | 3273 | ret = sock_do_ioctl(net, sock, cmd, (unsigned long) r); |
c6d409cf | 3274 | set_fs(old_fs); |
7a229387 AB |
3275 | |
3276 | out: | |
7a229387 AB |
3277 | return ret; |
3278 | } | |
3279 | ||
3280 | /* Since old style bridge ioctl's endup using SIOCDEVPRIVATE | |
3281 | * for some operations; this forces use of the newer bridge-utils that | |
25985edc | 3282 | * use compatible ioctls |
7a229387 | 3283 | */ |
6b96018b | 3284 | static int old_bridge_ioctl(compat_ulong_t __user *argp) |
7a229387 | 3285 | { |
6b96018b | 3286 | compat_ulong_t tmp; |
7a229387 | 3287 | |
6b96018b | 3288 | if (get_user(tmp, argp)) |
7a229387 AB |
3289 | return -EFAULT; |
3290 | if (tmp == BRCTL_GET_VERSION) | |
3291 | return BRCTL_VERSION + 1; | |
3292 | return -EINVAL; | |
3293 | } | |
3294 | ||
6b96018b AB |
3295 | static int compat_sock_ioctl_trans(struct file *file, struct socket *sock, |
3296 | unsigned int cmd, unsigned long arg) | |
3297 | { | |
3298 | void __user *argp = compat_ptr(arg); | |
3299 | struct sock *sk = sock->sk; | |
3300 | struct net *net = sock_net(sk); | |
7a229387 | 3301 | |
6b96018b AB |
3302 | if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) |
3303 | return siocdevprivate_ioctl(net, cmd, argp); | |
3304 | ||
3305 | switch (cmd) { | |
3306 | case SIOCSIFBR: | |
3307 | case SIOCGIFBR: | |
3308 | return old_bridge_ioctl(argp); | |
3309 | case SIOCGIFNAME: | |
3310 | return dev_ifname32(net, argp); | |
3311 | case SIOCGIFCONF: | |
3312 | return dev_ifconf(net, argp); | |
3313 | case SIOCETHTOOL: | |
3314 | return ethtool_ioctl(net, argp); | |
7a50a240 AB |
3315 | case SIOCWANDEV: |
3316 | return compat_siocwandev(net, argp); | |
a2116ed2 AB |
3317 | case SIOCGIFMAP: |
3318 | case SIOCSIFMAP: | |
3319 | return compat_sioc_ifmap(net, cmd, argp); | |
6b96018b AB |
3320 | case SIOCBONDENSLAVE: |
3321 | case SIOCBONDRELEASE: | |
3322 | case SIOCBONDSETHWADDR: | |
3323 | case SIOCBONDSLAVEINFOQUERY: | |
3324 | case SIOCBONDINFOQUERY: | |
3325 | case SIOCBONDCHANGEACTIVE: | |
3326 | return bond_ioctl(net, cmd, argp); | |
3327 | case SIOCADDRT: | |
3328 | case SIOCDELRT: | |
3329 | return routing_ioctl(net, sock, cmd, argp); | |
3330 | case SIOCGSTAMP: | |
3331 | return do_siocgstamp(net, sock, cmd, argp); | |
3332 | case SIOCGSTAMPNS: | |
3333 | return do_siocgstampns(net, sock, cmd, argp); | |
a2116ed2 AB |
3334 | case SIOCSHWTSTAMP: |
3335 | return compat_siocshwtstamp(net, argp); | |
6b96018b AB |
3336 | |
3337 | case FIOSETOWN: | |
3338 | case SIOCSPGRP: | |
3339 | case FIOGETOWN: | |
3340 | case SIOCGPGRP: | |
3341 | case SIOCBRADDBR: | |
3342 | case SIOCBRDELBR: | |
3343 | case SIOCGIFVLAN: | |
3344 | case SIOCSIFVLAN: | |
3345 | case SIOCADDDLCI: | |
3346 | case SIOCDELDLCI: | |
3347 | return sock_ioctl(file, cmd, arg); | |
3348 | ||
3349 | case SIOCGIFFLAGS: | |
3350 | case SIOCSIFFLAGS: | |
3351 | case SIOCGIFMETRIC: | |
3352 | case SIOCSIFMETRIC: | |
3353 | case SIOCGIFMTU: | |
3354 | case SIOCSIFMTU: | |
3355 | case SIOCGIFMEM: | |
3356 | case SIOCSIFMEM: | |
3357 | case SIOCGIFHWADDR: | |
3358 | case SIOCSIFHWADDR: | |
3359 | case SIOCADDMULTI: | |
3360 | case SIOCDELMULTI: | |
3361 | case SIOCGIFINDEX: | |
6b96018b AB |
3362 | case SIOCGIFADDR: |
3363 | case SIOCSIFADDR: | |
3364 | case SIOCSIFHWBROADCAST: | |
6b96018b | 3365 | case SIOCDIFADDR: |
6b96018b AB |
3366 | case SIOCGIFBRDADDR: |
3367 | case SIOCSIFBRDADDR: | |
3368 | case SIOCGIFDSTADDR: | |
3369 | case SIOCSIFDSTADDR: | |
3370 | case SIOCGIFNETMASK: | |
3371 | case SIOCSIFNETMASK: | |
3372 | case SIOCSIFPFLAGS: | |
3373 | case SIOCGIFPFLAGS: | |
3374 | case SIOCGIFTXQLEN: | |
3375 | case SIOCSIFTXQLEN: | |
3376 | case SIOCBRADDIF: | |
3377 | case SIOCBRDELIF: | |
9177efd3 AB |
3378 | case SIOCSIFNAME: |
3379 | case SIOCGMIIPHY: | |
3380 | case SIOCGMIIREG: | |
3381 | case SIOCSMIIREG: | |
6b96018b | 3382 | return dev_ifsioc(net, sock, cmd, argp); |
9177efd3 | 3383 | |
6b96018b AB |
3384 | case SIOCSARP: |
3385 | case SIOCGARP: | |
3386 | case SIOCDARP: | |
6b96018b | 3387 | case SIOCATMARK: |
9177efd3 AB |
3388 | return sock_do_ioctl(net, sock, cmd, arg); |
3389 | } | |
3390 | ||
6b96018b AB |
3391 | return -ENOIOCTLCMD; |
3392 | } | |
7a229387 | 3393 | |
95c96174 | 3394 | static long compat_sock_ioctl(struct file *file, unsigned int cmd, |
89bddce5 | 3395 | unsigned long arg) |
89bbfc95 SP |
3396 | { |
3397 | struct socket *sock = file->private_data; | |
3398 | int ret = -ENOIOCTLCMD; | |
87de87d5 DM |
3399 | struct sock *sk; |
3400 | struct net *net; | |
3401 | ||
3402 | sk = sock->sk; | |
3403 | net = sock_net(sk); | |
89bbfc95 SP |
3404 | |
3405 | if (sock->ops->compat_ioctl) | |
3406 | ret = sock->ops->compat_ioctl(sock, cmd, arg); | |
3407 | ||
87de87d5 DM |
3408 | if (ret == -ENOIOCTLCMD && |
3409 | (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST)) | |
3410 | ret = compat_wext_handle_ioctl(net, cmd, arg); | |
3411 | ||
6b96018b AB |
3412 | if (ret == -ENOIOCTLCMD) |
3413 | ret = compat_sock_ioctl_trans(file, sock, cmd, arg); | |
3414 | ||
89bbfc95 SP |
3415 | return ret; |
3416 | } | |
3417 | #endif | |
3418 | ||
ac5a488e SS |
3419 | int kernel_bind(struct socket *sock, struct sockaddr *addr, int addrlen) |
3420 | { | |
3421 | return sock->ops->bind(sock, addr, addrlen); | |
3422 | } | |
c6d409cf | 3423 | EXPORT_SYMBOL(kernel_bind); |
ac5a488e SS |
3424 | |
3425 | int kernel_listen(struct socket *sock, int backlog) | |
3426 | { | |
3427 | return sock->ops->listen(sock, backlog); | |
3428 | } | |
c6d409cf | 3429 | EXPORT_SYMBOL(kernel_listen); |
ac5a488e SS |
3430 | |
3431 | int kernel_accept(struct socket *sock, struct socket **newsock, int flags) | |
3432 | { | |
3433 | struct sock *sk = sock->sk; | |
3434 | int err; | |
3435 | ||
3436 | err = sock_create_lite(sk->sk_family, sk->sk_type, sk->sk_protocol, | |
3437 | newsock); | |
3438 | if (err < 0) | |
3439 | goto done; | |
3440 | ||
3441 | err = sock->ops->accept(sock, *newsock, flags); | |
3442 | if (err < 0) { | |
3443 | sock_release(*newsock); | |
fa8705b0 | 3444 | *newsock = NULL; |
ac5a488e SS |
3445 | goto done; |
3446 | } | |
3447 | ||
3448 | (*newsock)->ops = sock->ops; | |
1b08534e | 3449 | __module_get((*newsock)->ops->owner); |
ac5a488e SS |
3450 | |
3451 | done: | |
3452 | return err; | |
3453 | } | |
c6d409cf | 3454 | EXPORT_SYMBOL(kernel_accept); |
ac5a488e SS |
3455 | |
3456 | int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen, | |
4768fbcb | 3457 | int flags) |
ac5a488e SS |
3458 | { |
3459 | return sock->ops->connect(sock, addr, addrlen, flags); | |
3460 | } | |
c6d409cf | 3461 | EXPORT_SYMBOL(kernel_connect); |
ac5a488e SS |
3462 | |
3463 | int kernel_getsockname(struct socket *sock, struct sockaddr *addr, | |
3464 | int *addrlen) | |
3465 | { | |
3466 | return sock->ops->getname(sock, addr, addrlen, 0); | |
3467 | } | |
c6d409cf | 3468 | EXPORT_SYMBOL(kernel_getsockname); |
ac5a488e SS |
3469 | |
3470 | int kernel_getpeername(struct socket *sock, struct sockaddr *addr, | |
3471 | int *addrlen) | |
3472 | { | |
3473 | return sock->ops->getname(sock, addr, addrlen, 1); | |
3474 | } | |
c6d409cf | 3475 | EXPORT_SYMBOL(kernel_getpeername); |
ac5a488e SS |
3476 | |
3477 | int kernel_getsockopt(struct socket *sock, int level, int optname, | |
3478 | char *optval, int *optlen) | |
3479 | { | |
3480 | mm_segment_t oldfs = get_fs(); | |
fb8621bb NK |
3481 | char __user *uoptval; |
3482 | int __user *uoptlen; | |
ac5a488e SS |
3483 | int err; |
3484 | ||
fb8621bb NK |
3485 | uoptval = (char __user __force *) optval; |
3486 | uoptlen = (int __user __force *) optlen; | |
3487 | ||
ac5a488e SS |
3488 | set_fs(KERNEL_DS); |
3489 | if (level == SOL_SOCKET) | |
fb8621bb | 3490 | err = sock_getsockopt(sock, level, optname, uoptval, uoptlen); |
ac5a488e | 3491 | else |
fb8621bb NK |
3492 | err = sock->ops->getsockopt(sock, level, optname, uoptval, |
3493 | uoptlen); | |
ac5a488e SS |
3494 | set_fs(oldfs); |
3495 | return err; | |
3496 | } | |
c6d409cf | 3497 | EXPORT_SYMBOL(kernel_getsockopt); |
ac5a488e SS |
3498 | |
3499 | int kernel_setsockopt(struct socket *sock, int level, int optname, | |
b7058842 | 3500 | char *optval, unsigned int optlen) |
ac5a488e SS |
3501 | { |
3502 | mm_segment_t oldfs = get_fs(); | |
fb8621bb | 3503 | char __user *uoptval; |
ac5a488e SS |
3504 | int err; |
3505 | ||
fb8621bb NK |
3506 | uoptval = (char __user __force *) optval; |
3507 | ||
ac5a488e SS |
3508 | set_fs(KERNEL_DS); |
3509 | if (level == SOL_SOCKET) | |
fb8621bb | 3510 | err = sock_setsockopt(sock, level, optname, uoptval, optlen); |
ac5a488e | 3511 | else |
fb8621bb | 3512 | err = sock->ops->setsockopt(sock, level, optname, uoptval, |
ac5a488e SS |
3513 | optlen); |
3514 | set_fs(oldfs); | |
3515 | return err; | |
3516 | } | |
c6d409cf | 3517 | EXPORT_SYMBOL(kernel_setsockopt); |
ac5a488e SS |
3518 | |
3519 | int kernel_sendpage(struct socket *sock, struct page *page, int offset, | |
3520 | size_t size, int flags) | |
3521 | { | |
3522 | if (sock->ops->sendpage) | |
3523 | return sock->ops->sendpage(sock, page, offset, size, flags); | |
3524 | ||
3525 | return sock_no_sendpage(sock, page, offset, size, flags); | |
3526 | } | |
c6d409cf | 3527 | EXPORT_SYMBOL(kernel_sendpage); |
ac5a488e SS |
3528 | |
3529 | int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg) | |
3530 | { | |
3531 | mm_segment_t oldfs = get_fs(); | |
3532 | int err; | |
3533 | ||
3534 | set_fs(KERNEL_DS); | |
3535 | err = sock->ops->ioctl(sock, cmd, arg); | |
3536 | set_fs(oldfs); | |
3537 | ||
3538 | return err; | |
3539 | } | |
c6d409cf | 3540 | EXPORT_SYMBOL(kernel_sock_ioctl); |
ac5a488e | 3541 | |
91cf45f0 TM |
3542 | int kernel_sock_shutdown(struct socket *sock, enum sock_shutdown_cmd how) |
3543 | { | |
3544 | return sock->ops->shutdown(sock, how); | |
3545 | } | |
91cf45f0 | 3546 | EXPORT_SYMBOL(kernel_sock_shutdown); |