ia64/linux-2.6.18-xen.hg

view net/compat.c @ 871:9cbcc9008446

xen/x86: don't initialize cpu_data[]'s apicid field on generic code

Afaict, this is not only redundant with the intialization done in
drivers/xen/core/smpboot.c, but actually results - at least for
secondary CPUs - in the Xen-specific value written to be later
overwritten with whatever the generic code determines (with no
guarantee that the two values are identical).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
author Keir Fraser <keir.fraser@citrix.com>
date Thu May 14 10:09:15 2009 +0100 (2009-05-14)
parents 831230e53067
children
line source
1 /*
2 * 32bit Socket syscall emulation. Based on arch/sparc64/kernel/sys_sparc32.c.
3 *
4 * Copyright (C) 2000 VA Linux Co
5 * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
6 * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
7 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
8 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
9 * Copyright (C) 2000 Hewlett-Packard Co.
10 * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
11 * Copyright (C) 2000,2001 Andi Kleen, SuSE Labs
12 */
14 #include <linux/kernel.h>
15 #include <linux/fs.h>
16 #include <linux/sched.h>
17 #include <linux/types.h>
18 #include <linux/file.h>
19 #include <linux/icmpv6.h>
20 #include <linux/socket.h>
21 #include <linux/syscalls.h>
22 #include <linux/filter.h>
23 #include <linux/compat.h>
24 #include <linux/netfilter_ipv4/ip_tables.h>
25 #include <linux/security.h>
27 #include <net/scm.h>
28 #include <net/sock.h>
29 #include <asm/uaccess.h>
30 #include <net/compat.h>
32 static inline int iov_from_user_compat_to_kern(struct iovec *kiov,
33 struct compat_iovec __user *uiov32,
34 int niov)
35 {
36 int tot_len = 0;
38 while(niov > 0) {
39 compat_uptr_t buf;
40 compat_size_t len;
42 if(get_user(len, &uiov32->iov_len) ||
43 get_user(buf, &uiov32->iov_base)) {
44 tot_len = -EFAULT;
45 break;
46 }
47 tot_len += len;
48 kiov->iov_base = compat_ptr(buf);
49 kiov->iov_len = (__kernel_size_t) len;
50 uiov32++;
51 kiov++;
52 niov--;
53 }
54 return tot_len;
55 }
57 int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg)
58 {
59 compat_uptr_t tmp1, tmp2, tmp3;
61 if (!access_ok(VERIFY_READ, umsg, sizeof(*umsg)) ||
62 __get_user(tmp1, &umsg->msg_name) ||
63 __get_user(kmsg->msg_namelen, &umsg->msg_namelen) ||
64 __get_user(tmp2, &umsg->msg_iov) ||
65 __get_user(kmsg->msg_iovlen, &umsg->msg_iovlen) ||
66 __get_user(tmp3, &umsg->msg_control) ||
67 __get_user(kmsg->msg_controllen, &umsg->msg_controllen) ||
68 __get_user(kmsg->msg_flags, &umsg->msg_flags))
69 return -EFAULT;
70 kmsg->msg_name = compat_ptr(tmp1);
71 kmsg->msg_iov = compat_ptr(tmp2);
72 kmsg->msg_control = compat_ptr(tmp3);
73 return 0;
74 }
76 /* I've named the args so it is easy to tell whose space the pointers are in. */
77 int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
78 char *kern_address, int mode)
79 {
80 int tot_len;
82 if(kern_msg->msg_namelen) {
83 if(mode==VERIFY_READ) {
84 int err = move_addr_to_kernel(kern_msg->msg_name,
85 kern_msg->msg_namelen,
86 kern_address);
87 if(err < 0)
88 return err;
89 }
90 kern_msg->msg_name = kern_address;
91 } else
92 kern_msg->msg_name = NULL;
94 tot_len = iov_from_user_compat_to_kern(kern_iov,
95 (struct compat_iovec __user *)kern_msg->msg_iov,
96 kern_msg->msg_iovlen);
97 if(tot_len >= 0)
98 kern_msg->msg_iov = kern_iov;
100 return tot_len;
101 }
103 /* Bleech... */
104 #define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32))
106 #define CMSG_COMPAT_DATA(cmsg) \
107 ((void __user *)((char __user *)(cmsg) + CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr))))
108 #define CMSG_COMPAT_SPACE(len) \
109 (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + CMSG_COMPAT_ALIGN(len))
110 #define CMSG_COMPAT_LEN(len) \
111 (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + (len))
113 #define CMSG_COMPAT_FIRSTHDR(msg) \
114 (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \
115 (struct compat_cmsghdr __user *)((msg)->msg_control) : \
116 (struct compat_cmsghdr __user *)NULL)
118 #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \
119 ((ucmlen) >= sizeof(struct compat_cmsghdr) && \
120 (ucmlen) <= (unsigned long) \
121 ((mhdr)->msg_controllen - \
122 ((char *)(ucmsg) - (char *)(mhdr)->msg_control)))
124 static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg,
125 struct compat_cmsghdr __user *cmsg, int cmsg_len)
126 {
127 char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len);
128 if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) >
129 msg->msg_controllen)
130 return NULL;
131 return (struct compat_cmsghdr __user *)ptr;
132 }
134 /* There is a lot of hair here because the alignment rules (and
135 * thus placement) of cmsg headers and length are different for
136 * 32-bit apps. -DaveM
137 */
138 int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk,
139 unsigned char *stackbuf, int stackbuf_size)
140 {
141 struct compat_cmsghdr __user *ucmsg;
142 struct cmsghdr *kcmsg, *kcmsg_base;
143 compat_size_t ucmlen;
144 __kernel_size_t kcmlen, tmp;
145 int err = -EFAULT;
147 kcmlen = 0;
148 kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;
149 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
150 while(ucmsg != NULL) {
151 if(get_user(ucmlen, &ucmsg->cmsg_len))
152 return -EFAULT;
154 /* Catch bogons. */
155 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
156 return -EINVAL;
158 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) +
159 CMSG_ALIGN(sizeof(struct cmsghdr)));
160 tmp = CMSG_ALIGN(tmp);
161 kcmlen += tmp;
162 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
163 }
164 if(kcmlen == 0)
165 return -EINVAL;
167 /* The kcmlen holds the 64-bit version of the control length.
168 * It may not be modified as we do not stick it into the kmsg
169 * until we have successfully copied over all of the data
170 * from the user.
171 */
172 if (kcmlen > stackbuf_size)
173 kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL);
174 if (kcmsg == NULL)
175 return -ENOBUFS;
177 /* Now copy them over neatly. */
178 memset(kcmsg, 0, kcmlen);
179 ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
180 while(ucmsg != NULL) {
181 if (__get_user(ucmlen, &ucmsg->cmsg_len))
182 goto Efault;
183 if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
184 goto Einval;
185 tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) +
186 CMSG_ALIGN(sizeof(struct cmsghdr)));
187 if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp))
188 goto Einval;
189 kcmsg->cmsg_len = tmp;
190 tmp = CMSG_ALIGN(tmp);
191 if (__get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level) ||
192 __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type) ||
193 copy_from_user(CMSG_DATA(kcmsg),
194 CMSG_COMPAT_DATA(ucmsg),
195 (ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg)))))
196 goto Efault;
198 /* Advance. */
199 kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp);
200 ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
201 }
203 /* Ok, looks like we made it. Hook it up and return success. */
204 kmsg->msg_control = kcmsg_base;
205 kmsg->msg_controllen = kcmlen;
206 return 0;
208 Einval:
209 err = -EINVAL;
210 Efault:
211 if (kcmsg_base != (struct cmsghdr *)stackbuf)
212 sock_kfree_s(sk, kcmsg_base, kcmlen);
213 return err;
214 }
216 int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
217 {
218 struct compat_timeval ctv;
219 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
220 struct compat_cmsghdr cmhdr;
221 int cmlen;
223 if(cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
224 kmsg->msg_flags |= MSG_CTRUNC;
225 return 0; /* XXX: return error? check spec. */
226 }
228 if (level == SOL_SOCKET && type == SO_TIMESTAMP) {
229 struct timeval *tv = (struct timeval *)data;
230 ctv.tv_sec = tv->tv_sec;
231 ctv.tv_usec = tv->tv_usec;
232 data = &ctv;
233 len = sizeof(struct compat_timeval);
234 }
236 cmlen = CMSG_COMPAT_LEN(len);
237 if(kmsg->msg_controllen < cmlen) {
238 kmsg->msg_flags |= MSG_CTRUNC;
239 cmlen = kmsg->msg_controllen;
240 }
241 cmhdr.cmsg_level = level;
242 cmhdr.cmsg_type = type;
243 cmhdr.cmsg_len = cmlen;
245 if(copy_to_user(cm, &cmhdr, sizeof cmhdr))
246 return -EFAULT;
247 if(copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr)))
248 return -EFAULT;
249 cmlen = CMSG_COMPAT_SPACE(len);
250 kmsg->msg_control += cmlen;
251 kmsg->msg_controllen -= cmlen;
252 return 0;
253 }
255 void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
256 {
257 struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
258 int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int);
259 int fdnum = scm->fp->count;
260 struct file **fp = scm->fp->fp;
261 int __user *cmfptr;
262 int err = 0, i;
264 if (fdnum < fdmax)
265 fdmax = fdnum;
267 for (i = 0, cmfptr = (int __user *) CMSG_COMPAT_DATA(cm); i < fdmax; i++, cmfptr++) {
268 int new_fd;
269 err = security_file_receive(fp[i]);
270 if (err)
271 break;
272 err = get_unused_fd();
273 if (err < 0)
274 break;
275 new_fd = err;
276 err = put_user(new_fd, cmfptr);
277 if (err) {
278 put_unused_fd(new_fd);
279 break;
280 }
281 /* Bump the usage count and install the file. */
282 get_file(fp[i]);
283 fd_install(new_fd, fp[i]);
284 }
286 if (i > 0) {
287 int cmlen = CMSG_COMPAT_LEN(i * sizeof(int));
288 if (!err)
289 err = put_user(SOL_SOCKET, &cm->cmsg_level);
290 if (!err)
291 err = put_user(SCM_RIGHTS, &cm->cmsg_type);
292 if (!err)
293 err = put_user(cmlen, &cm->cmsg_len);
294 if (!err) {
295 cmlen = CMSG_COMPAT_SPACE(i * sizeof(int));
296 kmsg->msg_control += cmlen;
297 kmsg->msg_controllen -= cmlen;
298 }
299 }
300 if (i < fdnum)
301 kmsg->msg_flags |= MSG_CTRUNC;
303 /*
304 * All of the files that fit in the message have had their
305 * usage counts incremented, so we just free the list.
306 */
307 __scm_destroy(scm);
308 }
310 /*
311 * For now, we assume that the compatibility and native version
312 * of struct ipt_entry are the same - sfr. FIXME
313 */
314 struct compat_ipt_replace {
315 char name[IPT_TABLE_MAXNAMELEN];
316 u32 valid_hooks;
317 u32 num_entries;
318 u32 size;
319 u32 hook_entry[NF_IP_NUMHOOKS];
320 u32 underflow[NF_IP_NUMHOOKS];
321 u32 num_counters;
322 compat_uptr_t counters; /* struct ipt_counters * */
323 struct ipt_entry entries[0];
324 };
326 static int do_netfilter_replace(int fd, int level, int optname,
327 char __user *optval, int optlen)
328 {
329 struct compat_ipt_replace __user *urepl;
330 struct ipt_replace __user *repl_nat;
331 char name[IPT_TABLE_MAXNAMELEN];
332 u32 origsize, tmp32, num_counters;
333 unsigned int repl_nat_size;
334 int ret;
335 int i;
336 compat_uptr_t ucntrs;
338 urepl = (struct compat_ipt_replace __user *)optval;
339 if (get_user(origsize, &urepl->size))
340 return -EFAULT;
342 /* Hack: Causes ipchains to give correct error msg --RR */
343 if (optlen != sizeof(*urepl) + origsize)
344 return -ENOPROTOOPT;
346 /* XXX Assumes that size of ipt_entry is the same both in
347 * native and compat environments.
348 */
349 repl_nat_size = sizeof(*repl_nat) + origsize;
350 repl_nat = compat_alloc_user_space(repl_nat_size);
352 ret = -EFAULT;
353 if (put_user(origsize, &repl_nat->size))
354 goto out;
356 if (!access_ok(VERIFY_READ, urepl, optlen) ||
357 !access_ok(VERIFY_WRITE, repl_nat, optlen))
358 goto out;
360 if (__copy_from_user(name, urepl->name, sizeof(urepl->name)) ||
361 __copy_to_user(repl_nat->name, name, sizeof(repl_nat->name)))
362 goto out;
364 if (__get_user(tmp32, &urepl->valid_hooks) ||
365 __put_user(tmp32, &repl_nat->valid_hooks))
366 goto out;
368 if (__get_user(tmp32, &urepl->num_entries) ||
369 __put_user(tmp32, &repl_nat->num_entries))
370 goto out;
372 if (__get_user(num_counters, &urepl->num_counters) ||
373 __put_user(num_counters, &repl_nat->num_counters))
374 goto out;
376 if (__get_user(ucntrs, &urepl->counters) ||
377 __put_user(compat_ptr(ucntrs), &repl_nat->counters))
378 goto out;
380 if (__copy_in_user(&repl_nat->entries[0],
381 &urepl->entries[0],
382 origsize))
383 goto out;
385 for (i = 0; i < NF_IP_NUMHOOKS; i++) {
386 if (__get_user(tmp32, &urepl->hook_entry[i]) ||
387 __put_user(tmp32, &repl_nat->hook_entry[i]) ||
388 __get_user(tmp32, &urepl->underflow[i]) ||
389 __put_user(tmp32, &repl_nat->underflow[i]))
390 goto out;
391 }
393 /*
394 * Since struct ipt_counters just contains two u_int64_t members
395 * we can just do the access_ok check here and pass the (converted)
396 * pointer into the standard syscall. We hope that the pointer is
397 * not misaligned ...
398 */
399 if (!access_ok(VERIFY_WRITE, compat_ptr(ucntrs),
400 num_counters * sizeof(struct ipt_counters)))
401 goto out;
404 ret = sys_setsockopt(fd, level, optname,
405 (char __user *)repl_nat, repl_nat_size);
407 out:
408 return ret;
409 }
411 /*
412 * A struct sock_filter is architecture independent.
413 */
414 struct compat_sock_fprog {
415 u16 len;
416 compat_uptr_t filter; /* struct sock_filter * */
417 };
419 static int do_set_attach_filter(struct socket *sock, int level, int optname,
420 char __user *optval, int optlen)
421 {
422 struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval;
423 struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog));
424 compat_uptr_t ptr;
425 u16 len;
427 if (!access_ok(VERIFY_READ, fprog32, sizeof(*fprog32)) ||
428 !access_ok(VERIFY_WRITE, kfprog, sizeof(struct sock_fprog)) ||
429 __get_user(len, &fprog32->len) ||
430 __get_user(ptr, &fprog32->filter) ||
431 __put_user(len, &kfprog->len) ||
432 __put_user(compat_ptr(ptr), &kfprog->filter))
433 return -EFAULT;
435 return sock_setsockopt(sock, level, optname, (char __user *)kfprog,
436 sizeof(struct sock_fprog));
437 }
439 static int do_set_sock_timeout(struct socket *sock, int level,
440 int optname, char __user *optval, int optlen)
441 {
442 struct compat_timeval __user *up = (struct compat_timeval __user *) optval;
443 struct timeval ktime;
444 mm_segment_t old_fs;
445 int err;
447 if (optlen < sizeof(*up))
448 return -EINVAL;
449 if (!access_ok(VERIFY_READ, up, sizeof(*up)) ||
450 __get_user(ktime.tv_sec, &up->tv_sec) ||
451 __get_user(ktime.tv_usec, &up->tv_usec))
452 return -EFAULT;
453 old_fs = get_fs();
454 set_fs(KERNEL_DS);
455 err = sock_setsockopt(sock, level, optname, (char *) &ktime, sizeof(ktime));
456 set_fs(old_fs);
458 return err;
459 }
461 static int compat_sock_setsockopt(struct socket *sock, int level, int optname,
462 char __user *optval, int optlen)
463 {
464 if (optname == SO_ATTACH_FILTER)
465 return do_set_attach_filter(sock, level, optname,
466 optval, optlen);
467 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
468 return do_set_sock_timeout(sock, level, optname, optval, optlen);
470 return sock_setsockopt(sock, level, optname, optval, optlen);
471 }
473 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
474 char __user *optval, int optlen)
475 {
476 int err;
477 struct socket *sock;
479 if (level == SOL_IPV6 && optname == IPT_SO_SET_REPLACE)
480 return do_netfilter_replace(fd, level, optname,
481 optval, optlen);
483 if (optlen < 0)
484 return -EINVAL;
486 if ((sock = sockfd_lookup(fd, &err))!=NULL)
487 {
488 err = security_socket_setsockopt(sock,level,optname);
489 if (err) {
490 sockfd_put(sock);
491 return err;
492 }
494 if (level == SOL_SOCKET)
495 err = compat_sock_setsockopt(sock, level,
496 optname, optval, optlen);
497 else if (sock->ops->compat_setsockopt)
498 err = sock->ops->compat_setsockopt(sock, level,
499 optname, optval, optlen);
500 else
501 err = sock->ops->setsockopt(sock, level,
502 optname, optval, optlen);
503 sockfd_put(sock);
504 }
505 return err;
506 }
508 static int do_get_sock_timeout(struct socket *sock, int level, int optname,
509 char __user *optval, int __user *optlen)
510 {
511 struct compat_timeval __user *up;
512 struct timeval ktime;
513 mm_segment_t old_fs;
514 int len, err;
516 up = (struct compat_timeval __user *) optval;
517 if (get_user(len, optlen))
518 return -EFAULT;
519 if (len < sizeof(*up))
520 return -EINVAL;
521 len = sizeof(ktime);
522 old_fs = get_fs();
523 set_fs(KERNEL_DS);
524 err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len);
525 set_fs(old_fs);
527 if (!err) {
528 if (put_user(sizeof(*up), optlen) ||
529 !access_ok(VERIFY_WRITE, up, sizeof(*up)) ||
530 __put_user(ktime.tv_sec, &up->tv_sec) ||
531 __put_user(ktime.tv_usec, &up->tv_usec))
532 err = -EFAULT;
533 }
534 return err;
535 }
537 static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
538 char __user *optval, int __user *optlen)
539 {
540 if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
541 return do_get_sock_timeout(sock, level, optname, optval, optlen);
542 return sock_getsockopt(sock, level, optname, optval, optlen);
543 }
545 int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
546 {
547 struct compat_timeval __user *ctv =
548 (struct compat_timeval __user*) userstamp;
549 int err = -ENOENT;
551 if (!sock_flag(sk, SOCK_TIMESTAMP))
552 sock_enable_timestamp(sk);
553 if (sk->sk_stamp.tv_sec == -1)
554 return err;
555 if (sk->sk_stamp.tv_sec == 0)
556 do_gettimeofday(&sk->sk_stamp);
557 if (put_user(sk->sk_stamp.tv_sec, &ctv->tv_sec) ||
558 put_user(sk->sk_stamp.tv_usec, &ctv->tv_usec))
559 err = -EFAULT;
560 return err;
561 }
562 EXPORT_SYMBOL(compat_sock_get_timestamp);
564 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
565 char __user *optval, int __user *optlen)
566 {
567 int err;
568 struct socket *sock;
570 if ((sock = sockfd_lookup(fd, &err))!=NULL)
571 {
572 err = security_socket_getsockopt(sock, level,
573 optname);
574 if (err) {
575 sockfd_put(sock);
576 return err;
577 }
579 if (level == SOL_SOCKET)
580 err = compat_sock_getsockopt(sock, level,
581 optname, optval, optlen);
582 else if (sock->ops->compat_getsockopt)
583 err = sock->ops->compat_getsockopt(sock, level,
584 optname, optval, optlen);
585 else
586 err = sock->ops->getsockopt(sock, level,
587 optname, optval, optlen);
588 sockfd_put(sock);
589 }
590 return err;
591 }
592 /* Argument list sizes for compat_sys_socketcall */
593 #define AL(x) ((x) * sizeof(u32))
594 static unsigned char nas[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
595 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
596 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
597 #undef AL
599 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, unsigned flags)
600 {
601 return sys_sendmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
602 }
604 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, unsigned int flags)
605 {
606 return sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
607 }
609 asmlinkage long compat_sys_socketcall(int call, u32 __user *args)
610 {
611 int ret;
612 u32 a[6];
613 u32 a0, a1;
615 if (call < SYS_SOCKET || call > SYS_RECVMSG)
616 return -EINVAL;
617 if (copy_from_user(a, args, nas[call]))
618 return -EFAULT;
619 a0 = a[0];
620 a1 = a[1];
622 switch(call) {
623 case SYS_SOCKET:
624 ret = sys_socket(a0, a1, a[2]);
625 break;
626 case SYS_BIND:
627 ret = sys_bind(a0, compat_ptr(a1), a[2]);
628 break;
629 case SYS_CONNECT:
630 ret = sys_connect(a0, compat_ptr(a1), a[2]);
631 break;
632 case SYS_LISTEN:
633 ret = sys_listen(a0, a1);
634 break;
635 case SYS_ACCEPT:
636 ret = sys_accept(a0, compat_ptr(a1), compat_ptr(a[2]));
637 break;
638 case SYS_GETSOCKNAME:
639 ret = sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2]));
640 break;
641 case SYS_GETPEERNAME:
642 ret = sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2]));
643 break;
644 case SYS_SOCKETPAIR:
645 ret = sys_socketpair(a0, a1, a[2], compat_ptr(a[3]));
646 break;
647 case SYS_SEND:
648 ret = sys_send(a0, compat_ptr(a1), a[2], a[3]);
649 break;
650 case SYS_SENDTO:
651 ret = sys_sendto(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), a[5]);
652 break;
653 case SYS_RECV:
654 ret = sys_recv(a0, compat_ptr(a1), a[2], a[3]);
655 break;
656 case SYS_RECVFROM:
657 ret = sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), compat_ptr(a[5]));
658 break;
659 case SYS_SHUTDOWN:
660 ret = sys_shutdown(a0,a1);
661 break;
662 case SYS_SETSOCKOPT:
663 ret = compat_sys_setsockopt(a0, a1, a[2],
664 compat_ptr(a[3]), a[4]);
665 break;
666 case SYS_GETSOCKOPT:
667 ret = compat_sys_getsockopt(a0, a1, a[2],
668 compat_ptr(a[3]), compat_ptr(a[4]));
669 break;
670 case SYS_SENDMSG:
671 ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]);
672 break;
673 case SYS_RECVMSG:
674 ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
675 break;
676 default:
677 ret = -EINVAL;
678 break;
679 }
680 return ret;
681 }