Contents of /alx-src/tags/kernel26-2.6.12-alx-r9/net/compat.c
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Wed Mar 4 11:03:09 2009 UTC (15 years, 3 months ago) by niro
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File size: 17115 byte(s)
Wed Mar 4 11:03:09 2009 UTC (15 years, 3 months ago) by niro
File MIME type: text/plain
File size: 17115 byte(s)
Tag kernel26-2.6.12-alx-r9
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 | */ |
13 | |
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> |
26 | |
27 | #include <net/scm.h> |
28 | #include <net/sock.h> |
29 | #include <asm/uaccess.h> |
30 | #include <net/compat.h> |
31 | |
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; |
37 | |
38 | while(niov > 0) { |
39 | compat_uptr_t buf; |
40 | compat_size_t len; |
41 | |
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 | } |
56 | |
57 | int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg) |
58 | { |
59 | compat_uptr_t tmp1, tmp2, tmp3; |
60 | |
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 | } |
75 | |
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; |
81 | |
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; |
93 | |
94 | if(kern_msg->msg_iovlen > UIO_FASTIOV) { |
95 | kern_iov = kmalloc(kern_msg->msg_iovlen * sizeof(struct iovec), |
96 | GFP_KERNEL); |
97 | if(!kern_iov) |
98 | return -ENOMEM; |
99 | } |
100 | |
101 | tot_len = iov_from_user_compat_to_kern(kern_iov, |
102 | (struct compat_iovec __user *)kern_msg->msg_iov, |
103 | kern_msg->msg_iovlen); |
104 | if(tot_len >= 0) |
105 | kern_msg->msg_iov = kern_iov; |
106 | else if(kern_msg->msg_iovlen > UIO_FASTIOV) |
107 | kfree(kern_iov); |
108 | |
109 | return tot_len; |
110 | } |
111 | |
112 | /* Bleech... */ |
113 | #define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32)) |
114 | |
115 | #define CMSG_COMPAT_DATA(cmsg) \ |
116 | ((void __user *)((char __user *)(cmsg) + CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)))) |
117 | #define CMSG_COMPAT_SPACE(len) \ |
118 | (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + CMSG_COMPAT_ALIGN(len)) |
119 | #define CMSG_COMPAT_LEN(len) \ |
120 | (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + (len)) |
121 | |
122 | #define CMSG_COMPAT_FIRSTHDR(msg) \ |
123 | (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \ |
124 | (struct compat_cmsghdr __user *)((msg)->msg_control) : \ |
125 | (struct compat_cmsghdr __user *)NULL) |
126 | |
127 | #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \ |
128 | ((ucmlen) >= sizeof(struct compat_cmsghdr) && \ |
129 | (ucmlen) <= (unsigned long) \ |
130 | ((mhdr)->msg_controllen - \ |
131 | ((char *)(ucmsg) - (char *)(mhdr)->msg_control))) |
132 | |
133 | static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg, |
134 | struct compat_cmsghdr __user *cmsg, int cmsg_len) |
135 | { |
136 | char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len); |
137 | if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) > |
138 | msg->msg_controllen) |
139 | return NULL; |
140 | return (struct compat_cmsghdr __user *)ptr; |
141 | } |
142 | |
143 | /* There is a lot of hair here because the alignment rules (and |
144 | * thus placement) of cmsg headers and length are different for |
145 | * 32-bit apps. -DaveM |
146 | */ |
147 | int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, |
148 | unsigned char *stackbuf, int stackbuf_size) |
149 | { |
150 | struct compat_cmsghdr __user *ucmsg; |
151 | struct cmsghdr *kcmsg, *kcmsg_base; |
152 | compat_size_t ucmlen; |
153 | __kernel_size_t kcmlen, tmp; |
154 | |
155 | kcmlen = 0; |
156 | kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf; |
157 | ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); |
158 | while(ucmsg != NULL) { |
159 | if(get_user(ucmlen, &ucmsg->cmsg_len)) |
160 | return -EFAULT; |
161 | |
162 | /* Catch bogons. */ |
163 | if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg)) |
164 | return -EINVAL; |
165 | |
166 | tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) + |
167 | CMSG_ALIGN(sizeof(struct cmsghdr))); |
168 | kcmlen += tmp; |
169 | ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen); |
170 | } |
171 | if(kcmlen == 0) |
172 | return -EINVAL; |
173 | |
174 | /* The kcmlen holds the 64-bit version of the control length. |
175 | * It may not be modified as we do not stick it into the kmsg |
176 | * until we have successfully copied over all of the data |
177 | * from the user. |
178 | */ |
179 | if(kcmlen > stackbuf_size) |
180 | kcmsg_base = kcmsg = kmalloc(kcmlen, GFP_KERNEL); |
181 | if(kcmsg == NULL) |
182 | return -ENOBUFS; |
183 | |
184 | /* Now copy them over neatly. */ |
185 | memset(kcmsg, 0, kcmlen); |
186 | ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); |
187 | while(ucmsg != NULL) { |
188 | __get_user(ucmlen, &ucmsg->cmsg_len); |
189 | tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) + |
190 | CMSG_ALIGN(sizeof(struct cmsghdr))); |
191 | kcmsg->cmsg_len = tmp; |
192 | __get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level); |
193 | __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type); |
194 | |
195 | /* Copy over the data. */ |
196 | if(copy_from_user(CMSG_DATA(kcmsg), |
197 | CMSG_COMPAT_DATA(ucmsg), |
198 | (ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))))) |
199 | goto out_free_efault; |
200 | |
201 | /* Advance. */ |
202 | kcmsg = (struct cmsghdr *)((char *)kcmsg + CMSG_ALIGN(tmp)); |
203 | ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen); |
204 | } |
205 | |
206 | /* Ok, looks like we made it. Hook it up and return success. */ |
207 | kmsg->msg_control = kcmsg_base; |
208 | kmsg->msg_controllen = kcmlen; |
209 | return 0; |
210 | |
211 | out_free_efault: |
212 | if(kcmsg_base != (struct cmsghdr *)stackbuf) |
213 | kfree(kcmsg_base); |
214 | return -EFAULT; |
215 | } |
216 | |
217 | int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data) |
218 | { |
219 | struct compat_timeval ctv; |
220 | struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; |
221 | struct compat_cmsghdr cmhdr; |
222 | int cmlen; |
223 | |
224 | if(cm == NULL || kmsg->msg_controllen < sizeof(*cm)) { |
225 | kmsg->msg_flags |= MSG_CTRUNC; |
226 | return 0; /* XXX: return error? check spec. */ |
227 | } |
228 | |
229 | if (level == SOL_SOCKET && type == SO_TIMESTAMP) { |
230 | struct timeval *tv = (struct timeval *)data; |
231 | ctv.tv_sec = tv->tv_sec; |
232 | ctv.tv_usec = tv->tv_usec; |
233 | data = &ctv; |
234 | len = sizeof(struct compat_timeval); |
235 | } |
236 | |
237 | cmlen = CMSG_COMPAT_LEN(len); |
238 | if(kmsg->msg_controllen < cmlen) { |
239 | kmsg->msg_flags |= MSG_CTRUNC; |
240 | cmlen = kmsg->msg_controllen; |
241 | } |
242 | cmhdr.cmsg_level = level; |
243 | cmhdr.cmsg_type = type; |
244 | cmhdr.cmsg_len = cmlen; |
245 | |
246 | if(copy_to_user(cm, &cmhdr, sizeof cmhdr)) |
247 | return -EFAULT; |
248 | if(copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr))) |
249 | return -EFAULT; |
250 | cmlen = CMSG_COMPAT_SPACE(len); |
251 | kmsg->msg_control += cmlen; |
252 | kmsg->msg_controllen -= cmlen; |
253 | return 0; |
254 | } |
255 | |
256 | void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm) |
257 | { |
258 | struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; |
259 | int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int); |
260 | int fdnum = scm->fp->count; |
261 | struct file **fp = scm->fp->fp; |
262 | int __user *cmfptr; |
263 | int err = 0, i; |
264 | |
265 | if (fdnum < fdmax) |
266 | fdmax = fdnum; |
267 | |
268 | for (i = 0, cmfptr = (int __user *) CMSG_COMPAT_DATA(cm); i < fdmax; i++, cmfptr++) { |
269 | int new_fd; |
270 | err = security_file_receive(fp[i]); |
271 | if (err) |
272 | break; |
273 | err = get_unused_fd(); |
274 | if (err < 0) |
275 | break; |
276 | new_fd = err; |
277 | err = put_user(new_fd, cmfptr); |
278 | if (err) { |
279 | put_unused_fd(new_fd); |
280 | break; |
281 | } |
282 | /* Bump the usage count and install the file. */ |
283 | get_file(fp[i]); |
284 | fd_install(new_fd, fp[i]); |
285 | } |
286 | |
287 | if (i > 0) { |
288 | int cmlen = CMSG_COMPAT_LEN(i * sizeof(int)); |
289 | if (!err) |
290 | err = put_user(SOL_SOCKET, &cm->cmsg_level); |
291 | if (!err) |
292 | err = put_user(SCM_RIGHTS, &cm->cmsg_type); |
293 | if (!err) |
294 | err = put_user(cmlen, &cm->cmsg_len); |
295 | if (!err) { |
296 | cmlen = CMSG_COMPAT_SPACE(i * sizeof(int)); |
297 | kmsg->msg_control += cmlen; |
298 | kmsg->msg_controllen -= cmlen; |
299 | } |
300 | } |
301 | if (i < fdnum) |
302 | kmsg->msg_flags |= MSG_CTRUNC; |
303 | |
304 | /* |
305 | * All of the files that fit in the message have had their |
306 | * usage counts incremented, so we just free the list. |
307 | */ |
308 | __scm_destroy(scm); |
309 | } |
310 | |
311 | /* |
312 | * For now, we assume that the compatibility and native version |
313 | * of struct ipt_entry are the same - sfr. FIXME |
314 | */ |
315 | struct compat_ipt_replace { |
316 | char name[IPT_TABLE_MAXNAMELEN]; |
317 | u32 valid_hooks; |
318 | u32 num_entries; |
319 | u32 size; |
320 | u32 hook_entry[NF_IP_NUMHOOKS]; |
321 | u32 underflow[NF_IP_NUMHOOKS]; |
322 | u32 num_counters; |
323 | compat_uptr_t counters; /* struct ipt_counters * */ |
324 | struct ipt_entry entries[0]; |
325 | }; |
326 | |
327 | static int do_netfilter_replace(int fd, int level, int optname, |
328 | char __user *optval, int optlen) |
329 | { |
330 | struct compat_ipt_replace __user *urepl; |
331 | struct ipt_replace __user *repl_nat; |
332 | char name[IPT_TABLE_MAXNAMELEN]; |
333 | u32 origsize, tmp32, num_counters; |
334 | unsigned int repl_nat_size; |
335 | int ret; |
336 | int i; |
337 | compat_uptr_t ucntrs; |
338 | |
339 | urepl = (struct compat_ipt_replace __user *)optval; |
340 | if (get_user(origsize, &urepl->size)) |
341 | return -EFAULT; |
342 | |
343 | /* Hack: Causes ipchains to give correct error msg --RR */ |
344 | if (optlen != sizeof(*urepl) + origsize) |
345 | return -ENOPROTOOPT; |
346 | |
347 | /* XXX Assumes that size of ipt_entry is the same both in |
348 | * native and compat environments. |
349 | */ |
350 | repl_nat_size = sizeof(*repl_nat) + origsize; |
351 | repl_nat = compat_alloc_user_space(repl_nat_size); |
352 | |
353 | ret = -EFAULT; |
354 | if (put_user(origsize, &repl_nat->size)) |
355 | goto out; |
356 | |
357 | if (!access_ok(VERIFY_READ, urepl, optlen) || |
358 | !access_ok(VERIFY_WRITE, repl_nat, optlen)) |
359 | goto out; |
360 | |
361 | if (__copy_from_user(name, urepl->name, sizeof(urepl->name)) || |
362 | __copy_to_user(repl_nat->name, name, sizeof(repl_nat->name))) |
363 | goto out; |
364 | |
365 | if (__get_user(tmp32, &urepl->valid_hooks) || |
366 | __put_user(tmp32, &repl_nat->valid_hooks)) |
367 | goto out; |
368 | |
369 | if (__get_user(tmp32, &urepl->num_entries) || |
370 | __put_user(tmp32, &repl_nat->num_entries)) |
371 | goto out; |
372 | |
373 | if (__get_user(num_counters, &urepl->num_counters) || |
374 | __put_user(num_counters, &repl_nat->num_counters)) |
375 | goto out; |
376 | |
377 | if (__get_user(ucntrs, &urepl->counters) || |
378 | __put_user(compat_ptr(ucntrs), &repl_nat->counters)) |
379 | goto out; |
380 | |
381 | if (__copy_in_user(&repl_nat->entries[0], |
382 | &urepl->entries[0], |
383 | origsize)) |
384 | goto out; |
385 | |
386 | for (i = 0; i < NF_IP_NUMHOOKS; i++) { |
387 | if (__get_user(tmp32, &urepl->hook_entry[i]) || |
388 | __put_user(tmp32, &repl_nat->hook_entry[i]) || |
389 | __get_user(tmp32, &urepl->underflow[i]) || |
390 | __put_user(tmp32, &repl_nat->underflow[i])) |
391 | goto out; |
392 | } |
393 | |
394 | /* |
395 | * Since struct ipt_counters just contains two u_int64_t members |
396 | * we can just do the access_ok check here and pass the (converted) |
397 | * pointer into the standard syscall. We hope that the pointer is |
398 | * not misaligned ... |
399 | */ |
400 | if (!access_ok(VERIFY_WRITE, compat_ptr(ucntrs), |
401 | num_counters * sizeof(struct ipt_counters))) |
402 | goto out; |
403 | |
404 | |
405 | ret = sys_setsockopt(fd, level, optname, |
406 | (char __user *)repl_nat, repl_nat_size); |
407 | |
408 | out: |
409 | return ret; |
410 | } |
411 | |
412 | /* |
413 | * A struct sock_filter is architecture independent. |
414 | */ |
415 | struct compat_sock_fprog { |
416 | u16 len; |
417 | compat_uptr_t filter; /* struct sock_filter * */ |
418 | }; |
419 | |
420 | static int do_set_attach_filter(int fd, int level, int optname, |
421 | char __user *optval, int optlen) |
422 | { |
423 | struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval; |
424 | struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog)); |
425 | compat_uptr_t ptr; |
426 | u16 len; |
427 | |
428 | if (!access_ok(VERIFY_READ, fprog32, sizeof(*fprog32)) || |
429 | !access_ok(VERIFY_WRITE, kfprog, sizeof(struct sock_fprog)) || |
430 | __get_user(len, &fprog32->len) || |
431 | __get_user(ptr, &fprog32->filter) || |
432 | __put_user(len, &kfprog->len) || |
433 | __put_user(compat_ptr(ptr), &kfprog->filter)) |
434 | return -EFAULT; |
435 | |
436 | return sys_setsockopt(fd, level, optname, (char __user *)kfprog, |
437 | sizeof(struct sock_fprog)); |
438 | } |
439 | |
440 | static int do_set_sock_timeout(int fd, int level, 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; |
446 | |
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 = sys_setsockopt(fd, level, optname, (char *) &ktime, sizeof(ktime)); |
456 | set_fs(old_fs); |
457 | |
458 | return err; |
459 | } |
460 | |
461 | asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, |
462 | char __user *optval, int optlen) |
463 | { |
464 | /* SO_SET_REPLACE seems to be the same in all levels */ |
465 | if (optname == IPT_SO_SET_REPLACE) |
466 | return do_netfilter_replace(fd, level, optname, |
467 | optval, optlen); |
468 | if (level == SOL_SOCKET && optname == SO_ATTACH_FILTER) |
469 | return do_set_attach_filter(fd, level, optname, |
470 | optval, optlen); |
471 | if (level == SOL_SOCKET && |
472 | (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)) |
473 | return do_set_sock_timeout(fd, level, optname, optval, optlen); |
474 | |
475 | return sys_setsockopt(fd, level, optname, optval, optlen); |
476 | } |
477 | |
478 | static int do_get_sock_timeout(int fd, int level, int optname, |
479 | char __user *optval, int __user *optlen) |
480 | { |
481 | struct compat_timeval __user *up; |
482 | struct timeval ktime; |
483 | mm_segment_t old_fs; |
484 | int len, err; |
485 | |
486 | up = (struct compat_timeval __user *) optval; |
487 | if (get_user(len, optlen)) |
488 | return -EFAULT; |
489 | if (len < sizeof(*up)) |
490 | return -EINVAL; |
491 | len = sizeof(ktime); |
492 | old_fs = get_fs(); |
493 | set_fs(KERNEL_DS); |
494 | err = sys_getsockopt(fd, level, optname, (char *) &ktime, &len); |
495 | set_fs(old_fs); |
496 | |
497 | if (!err) { |
498 | if (put_user(sizeof(*up), optlen) || |
499 | !access_ok(VERIFY_WRITE, up, sizeof(*up)) || |
500 | __put_user(ktime.tv_sec, &up->tv_sec) || |
501 | __put_user(ktime.tv_usec, &up->tv_usec)) |
502 | err = -EFAULT; |
503 | } |
504 | return err; |
505 | } |
506 | |
507 | asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, |
508 | char __user *optval, int __user *optlen) |
509 | { |
510 | if (level == SOL_SOCKET && |
511 | (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)) |
512 | return do_get_sock_timeout(fd, level, optname, optval, optlen); |
513 | return sys_getsockopt(fd, level, optname, optval, optlen); |
514 | } |
515 | |
516 | /* Argument list sizes for compat_sys_socketcall */ |
517 | #define AL(x) ((x) * sizeof(u32)) |
518 | static unsigned char nas[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), |
519 | AL(3),AL(3),AL(4),AL(4),AL(4),AL(6), |
520 | AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)}; |
521 | #undef AL |
522 | |
523 | asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, unsigned flags) |
524 | { |
525 | return sys_sendmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT); |
526 | } |
527 | |
528 | asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, unsigned int flags) |
529 | { |
530 | return sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT); |
531 | } |
532 | |
533 | asmlinkage long compat_sys_socketcall(int call, u32 __user *args) |
534 | { |
535 | int ret; |
536 | u32 a[6]; |
537 | u32 a0, a1; |
538 | |
539 | if (call < SYS_SOCKET || call > SYS_RECVMSG) |
540 | return -EINVAL; |
541 | if (copy_from_user(a, args, nas[call])) |
542 | return -EFAULT; |
543 | a0 = a[0]; |
544 | a1 = a[1]; |
545 | |
546 | switch(call) { |
547 | case SYS_SOCKET: |
548 | ret = sys_socket(a0, a1, a[2]); |
549 | break; |
550 | case SYS_BIND: |
551 | ret = sys_bind(a0, compat_ptr(a1), a[2]); |
552 | break; |
553 | case SYS_CONNECT: |
554 | ret = sys_connect(a0, compat_ptr(a1), a[2]); |
555 | break; |
556 | case SYS_LISTEN: |
557 | ret = sys_listen(a0, a1); |
558 | break; |
559 | case SYS_ACCEPT: |
560 | ret = sys_accept(a0, compat_ptr(a1), compat_ptr(a[2])); |
561 | break; |
562 | case SYS_GETSOCKNAME: |
563 | ret = sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2])); |
564 | break; |
565 | case SYS_GETPEERNAME: |
566 | ret = sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2])); |
567 | break; |
568 | case SYS_SOCKETPAIR: |
569 | ret = sys_socketpair(a0, a1, a[2], compat_ptr(a[3])); |
570 | break; |
571 | case SYS_SEND: |
572 | ret = sys_send(a0, compat_ptr(a1), a[2], a[3]); |
573 | break; |
574 | case SYS_SENDTO: |
575 | ret = sys_sendto(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), a[5]); |
576 | break; |
577 | case SYS_RECV: |
578 | ret = sys_recv(a0, compat_ptr(a1), a[2], a[3]); |
579 | break; |
580 | case SYS_RECVFROM: |
581 | ret = sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), compat_ptr(a[5])); |
582 | break; |
583 | case SYS_SHUTDOWN: |
584 | ret = sys_shutdown(a0,a1); |
585 | break; |
586 | case SYS_SETSOCKOPT: |
587 | ret = compat_sys_setsockopt(a0, a1, a[2], |
588 | compat_ptr(a[3]), a[4]); |
589 | break; |
590 | case SYS_GETSOCKOPT: |
591 | ret = compat_sys_getsockopt(a0, a1, a[2], |
592 | compat_ptr(a[3]), compat_ptr(a[4])); |
593 | break; |
594 | case SYS_SENDMSG: |
595 | ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]); |
596 | break; |
597 | case SYS_RECVMSG: |
598 | ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]); |
599 | break; |
600 | default: |
601 | ret = -EINVAL; |
602 | break; |
603 | } |
604 | return ret; |
605 | } |