blob: be5d936dc42396ae0c8a18d77f80b72d04772d83 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
32static 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
57int 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. */
77int 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
133static 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 */
147int 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
211out_free_efault:
212 if(kcmsg_base != (struct cmsghdr *)stackbuf)
213 kfree(kcmsg_base);
214 return -EFAULT;
215}
216
217int 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
256void 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 */
315struct 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
327static 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
408out:
409 return ret;
410}
411
412/*
413 * A struct sock_filter is architecture independent.
414 */
415struct compat_sock_fprog {
416 u16 len;
417 compat_uptr_t filter; /* struct sock_filter * */
418};
419
420static 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
440static 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
461asmlinkage 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
478static 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
507asmlinkage 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))
518static 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
523asmlinkage 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
528asmlinkage 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
533asmlinkage 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}