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1 | /* | |
2 | * linux/kernel/compat.c | |
3 | * | |
4 | * Kernel compatibililty routines for e.g. 32 bit syscall support | |
5 | * on 64 bit kernels. | |
6 | * | |
7 | * Copyright (C) 2002-2003 Stephen Rothwell, IBM Corporation | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | #include <linux/linkage.h> | |
15 | #include <linux/compat.h> | |
16 | #include <linux/errno.h> | |
17 | #include <linux/time.h> | |
18 | #include <linux/signal.h> | |
19 | #include <linux/sched.h> /* for MAX_SCHEDULE_TIMEOUT */ | |
20 | #include <linux/syscalls.h> | |
21 | #include <linux/unistd.h> | |
22 | #include <linux/security.h> | |
23 | #include <linux/timex.h> | |
24 | #include <linux/migrate.h> | |
25 | #include <linux/posix-timers.h> | |
26 | #include <linux/times.h> | |
27 | #include <linux/ptrace.h> | |
28 | ||
29 | #include <asm/uaccess.h> | |
30 | ||
31 | /* | |
32 | * Note that the native side is already converted to a timespec, because | |
33 | * that's what we want anyway. | |
34 | */ | |
35 | static int compat_get_timeval(struct timespec *o, | |
36 | struct compat_timeval __user *i) | |
37 | { | |
38 | long usec; | |
39 | ||
40 | if (get_user(o->tv_sec, &i->tv_sec) || | |
41 | get_user(usec, &i->tv_usec)) | |
42 | return -EFAULT; | |
43 | o->tv_nsec = usec * 1000; | |
44 | return 0; | |
45 | } | |
46 | ||
47 | static int compat_put_timeval(struct compat_timeval __user *o, | |
48 | struct timeval *i) | |
49 | { | |
50 | return (put_user(i->tv_sec, &o->tv_sec) || | |
51 | put_user(i->tv_usec, &o->tv_usec)) ? -EFAULT : 0; | |
52 | } | |
53 | ||
54 | asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, | |
55 | struct timezone __user *tz) | |
56 | { | |
57 | if (tv) { | |
58 | struct timeval ktv; | |
59 | do_gettimeofday(&ktv); | |
60 | if (compat_put_timeval(tv, &ktv)) | |
61 | return -EFAULT; | |
62 | } | |
63 | if (tz) { | |
64 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) | |
65 | return -EFAULT; | |
66 | } | |
67 | ||
68 | return 0; | |
69 | } | |
70 | ||
71 | asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, | |
72 | struct timezone __user *tz) | |
73 | { | |
74 | struct timespec kts; | |
75 | struct timezone ktz; | |
76 | ||
77 | if (tv) { | |
78 | if (compat_get_timeval(&kts, tv)) | |
79 | return -EFAULT; | |
80 | } | |
81 | if (tz) { | |
82 | if (copy_from_user(&ktz, tz, sizeof(ktz))) | |
83 | return -EFAULT; | |
84 | } | |
85 | ||
86 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); | |
87 | } | |
88 | ||
89 | int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts) | |
90 | { | |
91 | return (!access_ok(VERIFY_READ, cts, sizeof(*cts)) || | |
92 | __get_user(ts->tv_sec, &cts->tv_sec) || | |
93 | __get_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0; | |
94 | } | |
95 | ||
96 | int put_compat_timespec(const struct timespec *ts, struct compat_timespec __user *cts) | |
97 | { | |
98 | return (!access_ok(VERIFY_WRITE, cts, sizeof(*cts)) || | |
99 | __put_user(ts->tv_sec, &cts->tv_sec) || | |
100 | __put_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0; | |
101 | } | |
102 | ||
103 | static long compat_nanosleep_restart(struct restart_block *restart) | |
104 | { | |
105 | struct compat_timespec __user *rmtp; | |
106 | struct timespec rmt; | |
107 | mm_segment_t oldfs; | |
108 | long ret; | |
109 | ||
110 | restart->nanosleep.rmtp = (struct timespec __user *) &rmt; | |
111 | oldfs = get_fs(); | |
112 | set_fs(KERNEL_DS); | |
113 | ret = hrtimer_nanosleep_restart(restart); | |
114 | set_fs(oldfs); | |
115 | ||
116 | if (ret) { | |
117 | rmtp = restart->nanosleep.compat_rmtp; | |
118 | ||
119 | if (rmtp && put_compat_timespec(&rmt, rmtp)) | |
120 | return -EFAULT; | |
121 | } | |
122 | ||
123 | return ret; | |
124 | } | |
125 | ||
126 | asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp, | |
127 | struct compat_timespec __user *rmtp) | |
128 | { | |
129 | struct timespec tu, rmt; | |
130 | mm_segment_t oldfs; | |
131 | long ret; | |
132 | ||
133 | if (get_compat_timespec(&tu, rqtp)) | |
134 | return -EFAULT; | |
135 | ||
136 | if (!timespec_valid(&tu)) | |
137 | return -EINVAL; | |
138 | ||
139 | oldfs = get_fs(); | |
140 | set_fs(KERNEL_DS); | |
141 | ret = hrtimer_nanosleep(&tu, | |
142 | rmtp ? (struct timespec __user *)&rmt : NULL, | |
143 | HRTIMER_MODE_REL, CLOCK_MONOTONIC); | |
144 | set_fs(oldfs); | |
145 | ||
146 | if (ret) { | |
147 | struct restart_block *restart | |
148 | = ¤t_thread_info()->restart_block; | |
149 | ||
150 | restart->fn = compat_nanosleep_restart; | |
151 | restart->nanosleep.compat_rmtp = rmtp; | |
152 | ||
153 | if (rmtp && put_compat_timespec(&rmt, rmtp)) | |
154 | return -EFAULT; | |
155 | } | |
156 | ||
157 | return ret; | |
158 | } | |
159 | ||
160 | static inline long get_compat_itimerval(struct itimerval *o, | |
161 | struct compat_itimerval __user *i) | |
162 | { | |
163 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
164 | (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | | |
165 | __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | | |
166 | __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | | |
167 | __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); | |
168 | } | |
169 | ||
170 | static inline long put_compat_itimerval(struct compat_itimerval __user *o, | |
171 | struct itimerval *i) | |
172 | { | |
173 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
174 | (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | | |
175 | __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | | |
176 | __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | | |
177 | __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); | |
178 | } | |
179 | ||
180 | asmlinkage long compat_sys_getitimer(int which, | |
181 | struct compat_itimerval __user *it) | |
182 | { | |
183 | struct itimerval kit; | |
184 | int error; | |
185 | ||
186 | error = do_getitimer(which, &kit); | |
187 | if (!error && put_compat_itimerval(it, &kit)) | |
188 | error = -EFAULT; | |
189 | return error; | |
190 | } | |
191 | ||
192 | asmlinkage long compat_sys_setitimer(int which, | |
193 | struct compat_itimerval __user *in, | |
194 | struct compat_itimerval __user *out) | |
195 | { | |
196 | struct itimerval kin, kout; | |
197 | int error; | |
198 | ||
199 | if (in) { | |
200 | if (get_compat_itimerval(&kin, in)) | |
201 | return -EFAULT; | |
202 | } else | |
203 | memset(&kin, 0, sizeof(kin)); | |
204 | ||
205 | error = do_setitimer(which, &kin, out ? &kout : NULL); | |
206 | if (error || !out) | |
207 | return error; | |
208 | if (put_compat_itimerval(out, &kout)) | |
209 | return -EFAULT; | |
210 | return 0; | |
211 | } | |
212 | ||
213 | static compat_clock_t clock_t_to_compat_clock_t(clock_t x) | |
214 | { | |
215 | return compat_jiffies_to_clock_t(clock_t_to_jiffies(x)); | |
216 | } | |
217 | ||
218 | asmlinkage long compat_sys_times(struct compat_tms __user *tbuf) | |
219 | { | |
220 | if (tbuf) { | |
221 | struct tms tms; | |
222 | struct compat_tms tmp; | |
223 | ||
224 | do_sys_times(&tms); | |
225 | /* Convert our struct tms to the compat version. */ | |
226 | tmp.tms_utime = clock_t_to_compat_clock_t(tms.tms_utime); | |
227 | tmp.tms_stime = clock_t_to_compat_clock_t(tms.tms_stime); | |
228 | tmp.tms_cutime = clock_t_to_compat_clock_t(tms.tms_cutime); | |
229 | tmp.tms_cstime = clock_t_to_compat_clock_t(tms.tms_cstime); | |
230 | if (copy_to_user(tbuf, &tmp, sizeof(tmp))) | |
231 | return -EFAULT; | |
232 | } | |
233 | force_successful_syscall_return(); | |
234 | return compat_jiffies_to_clock_t(jiffies); | |
235 | } | |
236 | ||
237 | /* | |
238 | * Assumption: old_sigset_t and compat_old_sigset_t are both | |
239 | * types that can be passed to put_user()/get_user(). | |
240 | */ | |
241 | ||
242 | asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set) | |
243 | { | |
244 | old_sigset_t s; | |
245 | long ret; | |
246 | mm_segment_t old_fs = get_fs(); | |
247 | ||
248 | set_fs(KERNEL_DS); | |
249 | ret = sys_sigpending((old_sigset_t __user *) &s); | |
250 | set_fs(old_fs); | |
251 | if (ret == 0) | |
252 | ret = put_user(s, set); | |
253 | return ret; | |
254 | } | |
255 | ||
256 | asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set, | |
257 | compat_old_sigset_t __user *oset) | |
258 | { | |
259 | old_sigset_t s; | |
260 | long ret; | |
261 | mm_segment_t old_fs; | |
262 | ||
263 | if (set && get_user(s, set)) | |
264 | return -EFAULT; | |
265 | old_fs = get_fs(); | |
266 | set_fs(KERNEL_DS); | |
267 | ret = sys_sigprocmask(how, | |
268 | set ? (old_sigset_t __user *) &s : NULL, | |
269 | oset ? (old_sigset_t __user *) &s : NULL); | |
270 | set_fs(old_fs); | |
271 | if (ret == 0) | |
272 | if (oset) | |
273 | ret = put_user(s, oset); | |
274 | return ret; | |
275 | } | |
276 | ||
277 | asmlinkage long compat_sys_setrlimit(unsigned int resource, | |
278 | struct compat_rlimit __user *rlim) | |
279 | { | |
280 | struct rlimit r; | |
281 | int ret; | |
282 | mm_segment_t old_fs = get_fs (); | |
283 | ||
284 | if (resource >= RLIM_NLIMITS) | |
285 | return -EINVAL; | |
286 | ||
287 | if (!access_ok(VERIFY_READ, rlim, sizeof(*rlim)) || | |
288 | __get_user(r.rlim_cur, &rlim->rlim_cur) || | |
289 | __get_user(r.rlim_max, &rlim->rlim_max)) | |
290 | return -EFAULT; | |
291 | ||
292 | if (r.rlim_cur == COMPAT_RLIM_INFINITY) | |
293 | r.rlim_cur = RLIM_INFINITY; | |
294 | if (r.rlim_max == COMPAT_RLIM_INFINITY) | |
295 | r.rlim_max = RLIM_INFINITY; | |
296 | set_fs(KERNEL_DS); | |
297 | ret = sys_setrlimit(resource, (struct rlimit __user *) &r); | |
298 | set_fs(old_fs); | |
299 | return ret; | |
300 | } | |
301 | ||
302 | #ifdef COMPAT_RLIM_OLD_INFINITY | |
303 | ||
304 | asmlinkage long compat_sys_old_getrlimit(unsigned int resource, | |
305 | struct compat_rlimit __user *rlim) | |
306 | { | |
307 | struct rlimit r; | |
308 | int ret; | |
309 | mm_segment_t old_fs = get_fs(); | |
310 | ||
311 | set_fs(KERNEL_DS); | |
312 | ret = sys_old_getrlimit(resource, &r); | |
313 | set_fs(old_fs); | |
314 | ||
315 | if (!ret) { | |
316 | if (r.rlim_cur > COMPAT_RLIM_OLD_INFINITY) | |
317 | r.rlim_cur = COMPAT_RLIM_INFINITY; | |
318 | if (r.rlim_max > COMPAT_RLIM_OLD_INFINITY) | |
319 | r.rlim_max = COMPAT_RLIM_INFINITY; | |
320 | ||
321 | if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) || | |
322 | __put_user(r.rlim_cur, &rlim->rlim_cur) || | |
323 | __put_user(r.rlim_max, &rlim->rlim_max)) | |
324 | return -EFAULT; | |
325 | } | |
326 | return ret; | |
327 | } | |
328 | ||
329 | #endif | |
330 | ||
331 | asmlinkage long compat_sys_getrlimit (unsigned int resource, | |
332 | struct compat_rlimit __user *rlim) | |
333 | { | |
334 | struct rlimit r; | |
335 | int ret; | |
336 | mm_segment_t old_fs = get_fs(); | |
337 | ||
338 | set_fs(KERNEL_DS); | |
339 | ret = sys_getrlimit(resource, (struct rlimit __user *) &r); | |
340 | set_fs(old_fs); | |
341 | if (!ret) { | |
342 | if (r.rlim_cur > COMPAT_RLIM_INFINITY) | |
343 | r.rlim_cur = COMPAT_RLIM_INFINITY; | |
344 | if (r.rlim_max > COMPAT_RLIM_INFINITY) | |
345 | r.rlim_max = COMPAT_RLIM_INFINITY; | |
346 | ||
347 | if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) || | |
348 | __put_user(r.rlim_cur, &rlim->rlim_cur) || | |
349 | __put_user(r.rlim_max, &rlim->rlim_max)) | |
350 | return -EFAULT; | |
351 | } | |
352 | return ret; | |
353 | } | |
354 | ||
355 | int put_compat_rusage(const struct rusage *r, struct compat_rusage __user *ru) | |
356 | { | |
357 | if (!access_ok(VERIFY_WRITE, ru, sizeof(*ru)) || | |
358 | __put_user(r->ru_utime.tv_sec, &ru->ru_utime.tv_sec) || | |
359 | __put_user(r->ru_utime.tv_usec, &ru->ru_utime.tv_usec) || | |
360 | __put_user(r->ru_stime.tv_sec, &ru->ru_stime.tv_sec) || | |
361 | __put_user(r->ru_stime.tv_usec, &ru->ru_stime.tv_usec) || | |
362 | __put_user(r->ru_maxrss, &ru->ru_maxrss) || | |
363 | __put_user(r->ru_ixrss, &ru->ru_ixrss) || | |
364 | __put_user(r->ru_idrss, &ru->ru_idrss) || | |
365 | __put_user(r->ru_isrss, &ru->ru_isrss) || | |
366 | __put_user(r->ru_minflt, &ru->ru_minflt) || | |
367 | __put_user(r->ru_majflt, &ru->ru_majflt) || | |
368 | __put_user(r->ru_nswap, &ru->ru_nswap) || | |
369 | __put_user(r->ru_inblock, &ru->ru_inblock) || | |
370 | __put_user(r->ru_oublock, &ru->ru_oublock) || | |
371 | __put_user(r->ru_msgsnd, &ru->ru_msgsnd) || | |
372 | __put_user(r->ru_msgrcv, &ru->ru_msgrcv) || | |
373 | __put_user(r->ru_nsignals, &ru->ru_nsignals) || | |
374 | __put_user(r->ru_nvcsw, &ru->ru_nvcsw) || | |
375 | __put_user(r->ru_nivcsw, &ru->ru_nivcsw)) | |
376 | return -EFAULT; | |
377 | return 0; | |
378 | } | |
379 | ||
380 | asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru) | |
381 | { | |
382 | struct rusage r; | |
383 | int ret; | |
384 | mm_segment_t old_fs = get_fs(); | |
385 | ||
386 | set_fs(KERNEL_DS); | |
387 | ret = sys_getrusage(who, (struct rusage __user *) &r); | |
388 | set_fs(old_fs); | |
389 | ||
390 | if (ret) | |
391 | return ret; | |
392 | ||
393 | if (put_compat_rusage(&r, ru)) | |
394 | return -EFAULT; | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | asmlinkage long | |
400 | compat_sys_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options, | |
401 | struct compat_rusage __user *ru) | |
402 | { | |
403 | if (!ru) { | |
404 | return sys_wait4(pid, stat_addr, options, NULL); | |
405 | } else { | |
406 | struct rusage r; | |
407 | int ret; | |
408 | unsigned int status; | |
409 | mm_segment_t old_fs = get_fs(); | |
410 | ||
411 | set_fs (KERNEL_DS); | |
412 | ret = sys_wait4(pid, | |
413 | (stat_addr ? | |
414 | (unsigned int __user *) &status : NULL), | |
415 | options, (struct rusage __user *) &r); | |
416 | set_fs (old_fs); | |
417 | ||
418 | if (ret > 0) { | |
419 | if (put_compat_rusage(&r, ru)) | |
420 | return -EFAULT; | |
421 | if (stat_addr && put_user(status, stat_addr)) | |
422 | return -EFAULT; | |
423 | } | |
424 | return ret; | |
425 | } | |
426 | } | |
427 | ||
428 | asmlinkage long compat_sys_waitid(int which, compat_pid_t pid, | |
429 | struct compat_siginfo __user *uinfo, int options, | |
430 | struct compat_rusage __user *uru) | |
431 | { | |
432 | siginfo_t info; | |
433 | struct rusage ru; | |
434 | long ret; | |
435 | mm_segment_t old_fs = get_fs(); | |
436 | ||
437 | memset(&info, 0, sizeof(info)); | |
438 | ||
439 | set_fs(KERNEL_DS); | |
440 | ret = sys_waitid(which, pid, (siginfo_t __user *)&info, options, | |
441 | uru ? (struct rusage __user *)&ru : NULL); | |
442 | set_fs(old_fs); | |
443 | ||
444 | if ((ret < 0) || (info.si_signo == 0)) | |
445 | return ret; | |
446 | ||
447 | if (uru) { | |
448 | ret = put_compat_rusage(&ru, uru); | |
449 | if (ret) | |
450 | return ret; | |
451 | } | |
452 | ||
453 | BUG_ON(info.si_code & __SI_MASK); | |
454 | info.si_code |= __SI_CHLD; | |
455 | return copy_siginfo_to_user32(uinfo, &info); | |
456 | } | |
457 | ||
458 | static int compat_get_user_cpu_mask(compat_ulong_t __user *user_mask_ptr, | |
459 | unsigned len, struct cpumask *new_mask) | |
460 | { | |
461 | unsigned long *k; | |
462 | ||
463 | if (len < cpumask_size()) | |
464 | memset(new_mask, 0, cpumask_size()); | |
465 | else if (len > cpumask_size()) | |
466 | len = cpumask_size(); | |
467 | ||
468 | k = cpumask_bits(new_mask); | |
469 | return compat_get_bitmap(k, user_mask_ptr, len * 8); | |
470 | } | |
471 | ||
472 | asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, | |
473 | unsigned int len, | |
474 | compat_ulong_t __user *user_mask_ptr) | |
475 | { | |
476 | cpumask_var_t new_mask; | |
477 | int retval; | |
478 | ||
479 | if (!alloc_cpumask_var(&new_mask, GFP_KERNEL)) | |
480 | return -ENOMEM; | |
481 | ||
482 | retval = compat_get_user_cpu_mask(user_mask_ptr, len, new_mask); | |
483 | if (retval) | |
484 | goto out; | |
485 | ||
486 | retval = sched_setaffinity(pid, new_mask); | |
487 | out: | |
488 | free_cpumask_var(new_mask); | |
489 | return retval; | |
490 | } | |
491 | ||
492 | asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, unsigned int len, | |
493 | compat_ulong_t __user *user_mask_ptr) | |
494 | { | |
495 | int ret; | |
496 | cpumask_var_t mask; | |
497 | unsigned long *k; | |
498 | unsigned int min_length = cpumask_size(); | |
499 | ||
500 | if (nr_cpu_ids <= BITS_PER_COMPAT_LONG) | |
501 | min_length = sizeof(compat_ulong_t); | |
502 | ||
503 | if (len < min_length) | |
504 | return -EINVAL; | |
505 | ||
506 | if (!alloc_cpumask_var(&mask, GFP_KERNEL)) | |
507 | return -ENOMEM; | |
508 | ||
509 | ret = sched_getaffinity(pid, mask); | |
510 | if (ret < 0) | |
511 | goto out; | |
512 | ||
513 | k = cpumask_bits(mask); | |
514 | ret = compat_put_bitmap(user_mask_ptr, k, min_length * 8); | |
515 | if (ret == 0) | |
516 | ret = min_length; | |
517 | ||
518 | out: | |
519 | free_cpumask_var(mask); | |
520 | return ret; | |
521 | } | |
522 | ||
523 | int get_compat_itimerspec(struct itimerspec *dst, | |
524 | const struct compat_itimerspec __user *src) | |
525 | { | |
526 | if (get_compat_timespec(&dst->it_interval, &src->it_interval) || | |
527 | get_compat_timespec(&dst->it_value, &src->it_value)) | |
528 | return -EFAULT; | |
529 | return 0; | |
530 | } | |
531 | ||
532 | int put_compat_itimerspec(struct compat_itimerspec __user *dst, | |
533 | const struct itimerspec *src) | |
534 | { | |
535 | if (put_compat_timespec(&src->it_interval, &dst->it_interval) || | |
536 | put_compat_timespec(&src->it_value, &dst->it_value)) | |
537 | return -EFAULT; | |
538 | return 0; | |
539 | } | |
540 | ||
541 | long compat_sys_timer_create(clockid_t which_clock, | |
542 | struct compat_sigevent __user *timer_event_spec, | |
543 | timer_t __user *created_timer_id) | |
544 | { | |
545 | struct sigevent __user *event = NULL; | |
546 | ||
547 | if (timer_event_spec) { | |
548 | struct sigevent kevent; | |
549 | ||
550 | event = compat_alloc_user_space(sizeof(*event)); | |
551 | if (get_compat_sigevent(&kevent, timer_event_spec) || | |
552 | copy_to_user(event, &kevent, sizeof(*event))) | |
553 | return -EFAULT; | |
554 | } | |
555 | ||
556 | return sys_timer_create(which_clock, event, created_timer_id); | |
557 | } | |
558 | ||
559 | long compat_sys_timer_settime(timer_t timer_id, int flags, | |
560 | struct compat_itimerspec __user *new, | |
561 | struct compat_itimerspec __user *old) | |
562 | { | |
563 | long err; | |
564 | mm_segment_t oldfs; | |
565 | struct itimerspec newts, oldts; | |
566 | ||
567 | if (!new) | |
568 | return -EINVAL; | |
569 | if (get_compat_itimerspec(&newts, new)) | |
570 | return -EFAULT; | |
571 | oldfs = get_fs(); | |
572 | set_fs(KERNEL_DS); | |
573 | err = sys_timer_settime(timer_id, flags, | |
574 | (struct itimerspec __user *) &newts, | |
575 | (struct itimerspec __user *) &oldts); | |
576 | set_fs(oldfs); | |
577 | if (!err && old && put_compat_itimerspec(old, &oldts)) | |
578 | return -EFAULT; | |
579 | return err; | |
580 | } | |
581 | ||
582 | long compat_sys_timer_gettime(timer_t timer_id, | |
583 | struct compat_itimerspec __user *setting) | |
584 | { | |
585 | long err; | |
586 | mm_segment_t oldfs; | |
587 | struct itimerspec ts; | |
588 | ||
589 | oldfs = get_fs(); | |
590 | set_fs(KERNEL_DS); | |
591 | err = sys_timer_gettime(timer_id, | |
592 | (struct itimerspec __user *) &ts); | |
593 | set_fs(oldfs); | |
594 | if (!err && put_compat_itimerspec(setting, &ts)) | |
595 | return -EFAULT; | |
596 | return err; | |
597 | } | |
598 | ||
599 | long compat_sys_clock_settime(clockid_t which_clock, | |
600 | struct compat_timespec __user *tp) | |
601 | { | |
602 | long err; | |
603 | mm_segment_t oldfs; | |
604 | struct timespec ts; | |
605 | ||
606 | if (get_compat_timespec(&ts, tp)) | |
607 | return -EFAULT; | |
608 | oldfs = get_fs(); | |
609 | set_fs(KERNEL_DS); | |
610 | err = sys_clock_settime(which_clock, | |
611 | (struct timespec __user *) &ts); | |
612 | set_fs(oldfs); | |
613 | return err; | |
614 | } | |
615 | ||
616 | long compat_sys_clock_gettime(clockid_t which_clock, | |
617 | struct compat_timespec __user *tp) | |
618 | { | |
619 | long err; | |
620 | mm_segment_t oldfs; | |
621 | struct timespec ts; | |
622 | ||
623 | oldfs = get_fs(); | |
624 | set_fs(KERNEL_DS); | |
625 | err = sys_clock_gettime(which_clock, | |
626 | (struct timespec __user *) &ts); | |
627 | set_fs(oldfs); | |
628 | if (!err && put_compat_timespec(&ts, tp)) | |
629 | return -EFAULT; | |
630 | return err; | |
631 | } | |
632 | ||
633 | long compat_sys_clock_getres(clockid_t which_clock, | |
634 | struct compat_timespec __user *tp) | |
635 | { | |
636 | long err; | |
637 | mm_segment_t oldfs; | |
638 | struct timespec ts; | |
639 | ||
640 | oldfs = get_fs(); | |
641 | set_fs(KERNEL_DS); | |
642 | err = sys_clock_getres(which_clock, | |
643 | (struct timespec __user *) &ts); | |
644 | set_fs(oldfs); | |
645 | if (!err && tp && put_compat_timespec(&ts, tp)) | |
646 | return -EFAULT; | |
647 | return err; | |
648 | } | |
649 | ||
650 | static long compat_clock_nanosleep_restart(struct restart_block *restart) | |
651 | { | |
652 | long err; | |
653 | mm_segment_t oldfs; | |
654 | struct timespec tu; | |
655 | struct compat_timespec *rmtp = restart->nanosleep.compat_rmtp; | |
656 | ||
657 | restart->nanosleep.rmtp = (struct timespec __user *) &tu; | |
658 | oldfs = get_fs(); | |
659 | set_fs(KERNEL_DS); | |
660 | err = clock_nanosleep_restart(restart); | |
661 | set_fs(oldfs); | |
662 | ||
663 | if ((err == -ERESTART_RESTARTBLOCK) && rmtp && | |
664 | put_compat_timespec(&tu, rmtp)) | |
665 | return -EFAULT; | |
666 | ||
667 | if (err == -ERESTART_RESTARTBLOCK) { | |
668 | restart->fn = compat_clock_nanosleep_restart; | |
669 | restart->nanosleep.compat_rmtp = rmtp; | |
670 | } | |
671 | return err; | |
672 | } | |
673 | ||
674 | long compat_sys_clock_nanosleep(clockid_t which_clock, int flags, | |
675 | struct compat_timespec __user *rqtp, | |
676 | struct compat_timespec __user *rmtp) | |
677 | { | |
678 | long err; | |
679 | mm_segment_t oldfs; | |
680 | struct timespec in, out; | |
681 | struct restart_block *restart; | |
682 | ||
683 | if (get_compat_timespec(&in, rqtp)) | |
684 | return -EFAULT; | |
685 | ||
686 | oldfs = get_fs(); | |
687 | set_fs(KERNEL_DS); | |
688 | err = sys_clock_nanosleep(which_clock, flags, | |
689 | (struct timespec __user *) &in, | |
690 | (struct timespec __user *) &out); | |
691 | set_fs(oldfs); | |
692 | ||
693 | if ((err == -ERESTART_RESTARTBLOCK) && rmtp && | |
694 | put_compat_timespec(&out, rmtp)) | |
695 | return -EFAULT; | |
696 | ||
697 | if (err == -ERESTART_RESTARTBLOCK) { | |
698 | restart = ¤t_thread_info()->restart_block; | |
699 | restart->fn = compat_clock_nanosleep_restart; | |
700 | restart->nanosleep.compat_rmtp = rmtp; | |
701 | } | |
702 | return err; | |
703 | } | |
704 | ||
705 | /* | |
706 | * We currently only need the following fields from the sigevent | |
707 | * structure: sigev_value, sigev_signo, sig_notify and (sometimes | |
708 | * sigev_notify_thread_id). The others are handled in user mode. | |
709 | * We also assume that copying sigev_value.sival_int is sufficient | |
710 | * to keep all the bits of sigev_value.sival_ptr intact. | |
711 | */ | |
712 | int get_compat_sigevent(struct sigevent *event, | |
713 | const struct compat_sigevent __user *u_event) | |
714 | { | |
715 | memset(event, 0, sizeof(*event)); | |
716 | return (!access_ok(VERIFY_READ, u_event, sizeof(*u_event)) || | |
717 | __get_user(event->sigev_value.sival_int, | |
718 | &u_event->sigev_value.sival_int) || | |
719 | __get_user(event->sigev_signo, &u_event->sigev_signo) || | |
720 | __get_user(event->sigev_notify, &u_event->sigev_notify) || | |
721 | __get_user(event->sigev_notify_thread_id, | |
722 | &u_event->sigev_notify_thread_id)) | |
723 | ? -EFAULT : 0; | |
724 | } | |
725 | ||
726 | long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, | |
727 | unsigned long bitmap_size) | |
728 | { | |
729 | int i, j; | |
730 | unsigned long m; | |
731 | compat_ulong_t um; | |
732 | unsigned long nr_compat_longs; | |
733 | ||
734 | /* align bitmap up to nearest compat_long_t boundary */ | |
735 | bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG); | |
736 | ||
737 | if (!access_ok(VERIFY_READ, umask, bitmap_size / 8)) | |
738 | return -EFAULT; | |
739 | ||
740 | nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size); | |
741 | ||
742 | for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) { | |
743 | m = 0; | |
744 | ||
745 | for (j = 0; j < sizeof(m)/sizeof(um); j++) { | |
746 | /* | |
747 | * We dont want to read past the end of the userspace | |
748 | * bitmap. We must however ensure the end of the | |
749 | * kernel bitmap is zeroed. | |
750 | */ | |
751 | if (nr_compat_longs-- > 0) { | |
752 | if (__get_user(um, umask)) | |
753 | return -EFAULT; | |
754 | } else { | |
755 | um = 0; | |
756 | } | |
757 | ||
758 | umask++; | |
759 | m |= (long)um << (j * BITS_PER_COMPAT_LONG); | |
760 | } | |
761 | *mask++ = m; | |
762 | } | |
763 | ||
764 | return 0; | |
765 | } | |
766 | ||
767 | long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, | |
768 | unsigned long bitmap_size) | |
769 | { | |
770 | int i, j; | |
771 | unsigned long m; | |
772 | compat_ulong_t um; | |
773 | unsigned long nr_compat_longs; | |
774 | ||
775 | /* align bitmap up to nearest compat_long_t boundary */ | |
776 | bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG); | |
777 | ||
778 | if (!access_ok(VERIFY_WRITE, umask, bitmap_size / 8)) | |
779 | return -EFAULT; | |
780 | ||
781 | nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size); | |
782 | ||
783 | for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) { | |
784 | m = *mask++; | |
785 | ||
786 | for (j = 0; j < sizeof(m)/sizeof(um); j++) { | |
787 | um = m; | |
788 | ||
789 | /* | |
790 | * We dont want to write past the end of the userspace | |
791 | * bitmap. | |
792 | */ | |
793 | if (nr_compat_longs-- > 0) { | |
794 | if (__put_user(um, umask)) | |
795 | return -EFAULT; | |
796 | } | |
797 | ||
798 | umask++; | |
799 | m >>= 4*sizeof(um); | |
800 | m >>= 4*sizeof(um); | |
801 | } | |
802 | } | |
803 | ||
804 | return 0; | |
805 | } | |
806 | ||
807 | void | |
808 | sigset_from_compat (sigset_t *set, compat_sigset_t *compat) | |
809 | { | |
810 | switch (_NSIG_WORDS) { | |
811 | case 4: set->sig[3] = compat->sig[6] | (((long)compat->sig[7]) << 32 ); | |
812 | case 3: set->sig[2] = compat->sig[4] | (((long)compat->sig[5]) << 32 ); | |
813 | case 2: set->sig[1] = compat->sig[2] | (((long)compat->sig[3]) << 32 ); | |
814 | case 1: set->sig[0] = compat->sig[0] | (((long)compat->sig[1]) << 32 ); | |
815 | } | |
816 | } | |
817 | ||
818 | asmlinkage long | |
819 | compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese, | |
820 | struct compat_siginfo __user *uinfo, | |
821 | struct compat_timespec __user *uts, compat_size_t sigsetsize) | |
822 | { | |
823 | compat_sigset_t s32; | |
824 | sigset_t s; | |
825 | int sig; | |
826 | struct timespec t; | |
827 | siginfo_t info; | |
828 | long ret, timeout = 0; | |
829 | ||
830 | if (sigsetsize != sizeof(sigset_t)) | |
831 | return -EINVAL; | |
832 | ||
833 | if (copy_from_user(&s32, uthese, sizeof(compat_sigset_t))) | |
834 | return -EFAULT; | |
835 | sigset_from_compat(&s, &s32); | |
836 | sigdelsetmask(&s,sigmask(SIGKILL)|sigmask(SIGSTOP)); | |
837 | signotset(&s); | |
838 | ||
839 | if (uts) { | |
840 | if (get_compat_timespec (&t, uts)) | |
841 | return -EFAULT; | |
842 | if (t.tv_nsec >= 1000000000L || t.tv_nsec < 0 | |
843 | || t.tv_sec < 0) | |
844 | return -EINVAL; | |
845 | } | |
846 | ||
847 | spin_lock_irq(¤t->sighand->siglock); | |
848 | sig = dequeue_signal(current, &s, &info); | |
849 | if (!sig) { | |
850 | timeout = MAX_SCHEDULE_TIMEOUT; | |
851 | if (uts) | |
852 | timeout = timespec_to_jiffies(&t) | |
853 | +(t.tv_sec || t.tv_nsec); | |
854 | if (timeout) { | |
855 | current->real_blocked = current->blocked; | |
856 | sigandsets(¤t->blocked, ¤t->blocked, &s); | |
857 | ||
858 | recalc_sigpending(); | |
859 | spin_unlock_irq(¤t->sighand->siglock); | |
860 | ||
861 | timeout = schedule_timeout_interruptible(timeout); | |
862 | ||
863 | spin_lock_irq(¤t->sighand->siglock); | |
864 | sig = dequeue_signal(current, &s, &info); | |
865 | current->blocked = current->real_blocked; | |
866 | siginitset(¤t->real_blocked, 0); | |
867 | recalc_sigpending(); | |
868 | } | |
869 | } | |
870 | spin_unlock_irq(¤t->sighand->siglock); | |
871 | ||
872 | if (sig) { | |
873 | ret = sig; | |
874 | if (uinfo) { | |
875 | if (copy_siginfo_to_user32(uinfo, &info)) | |
876 | ret = -EFAULT; | |
877 | } | |
878 | }else { | |
879 | ret = timeout?-EINTR:-EAGAIN; | |
880 | } | |
881 | return ret; | |
882 | ||
883 | } | |
884 | ||
885 | asmlinkage long | |
886 | compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig, | |
887 | struct compat_siginfo __user *uinfo) | |
888 | { | |
889 | siginfo_t info; | |
890 | ||
891 | if (copy_siginfo_from_user32(&info, uinfo)) | |
892 | return -EFAULT; | |
893 | return do_rt_tgsigqueueinfo(tgid, pid, sig, &info); | |
894 | } | |
895 | ||
896 | #ifdef __ARCH_WANT_COMPAT_SYS_TIME | |
897 | ||
898 | /* compat_time_t is a 32 bit "long" and needs to get converted. */ | |
899 | ||
900 | asmlinkage long compat_sys_time(compat_time_t __user * tloc) | |
901 | { | |
902 | compat_time_t i; | |
903 | struct timeval tv; | |
904 | ||
905 | do_gettimeofday(&tv); | |
906 | i = tv.tv_sec; | |
907 | ||
908 | if (tloc) { | |
909 | if (put_user(i,tloc)) | |
910 | return -EFAULT; | |
911 | } | |
912 | force_successful_syscall_return(); | |
913 | return i; | |
914 | } | |
915 | ||
916 | asmlinkage long compat_sys_stime(compat_time_t __user *tptr) | |
917 | { | |
918 | struct timespec tv; | |
919 | int err; | |
920 | ||
921 | if (get_user(tv.tv_sec, tptr)) | |
922 | return -EFAULT; | |
923 | ||
924 | tv.tv_nsec = 0; | |
925 | ||
926 | err = security_settime(&tv, NULL); | |
927 | if (err) | |
928 | return err; | |
929 | ||
930 | do_settimeofday(&tv); | |
931 | return 0; | |
932 | } | |
933 | ||
934 | #endif /* __ARCH_WANT_COMPAT_SYS_TIME */ | |
935 | ||
936 | #ifdef __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND | |
937 | asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat_size_t sigsetsize) | |
938 | { | |
939 | sigset_t newset; | |
940 | compat_sigset_t newset32; | |
941 | ||
942 | /* XXX: Don't preclude handling different sized sigset_t's. */ | |
943 | if (sigsetsize != sizeof(sigset_t)) | |
944 | return -EINVAL; | |
945 | ||
946 | if (copy_from_user(&newset32, unewset, sizeof(compat_sigset_t))) | |
947 | return -EFAULT; | |
948 | sigset_from_compat(&newset, &newset32); | |
949 | sigdelsetmask(&newset, sigmask(SIGKILL)|sigmask(SIGSTOP)); | |
950 | ||
951 | spin_lock_irq(¤t->sighand->siglock); | |
952 | current->saved_sigmask = current->blocked; | |
953 | current->blocked = newset; | |
954 | recalc_sigpending(); | |
955 | spin_unlock_irq(¤t->sighand->siglock); | |
956 | ||
957 | current->state = TASK_INTERRUPTIBLE; | |
958 | schedule(); | |
959 | set_restore_sigmask(); | |
960 | return -ERESTARTNOHAND; | |
961 | } | |
962 | #endif /* __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND */ | |
963 | ||
964 | asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp) | |
965 | { | |
966 | struct timex txc; | |
967 | int ret; | |
968 | ||
969 | memset(&txc, 0, sizeof(struct timex)); | |
970 | ||
971 | if (!access_ok(VERIFY_READ, utp, sizeof(struct compat_timex)) || | |
972 | __get_user(txc.modes, &utp->modes) || | |
973 | __get_user(txc.offset, &utp->offset) || | |
974 | __get_user(txc.freq, &utp->freq) || | |
975 | __get_user(txc.maxerror, &utp->maxerror) || | |
976 | __get_user(txc.esterror, &utp->esterror) || | |
977 | __get_user(txc.status, &utp->status) || | |
978 | __get_user(txc.constant, &utp->constant) || | |
979 | __get_user(txc.precision, &utp->precision) || | |
980 | __get_user(txc.tolerance, &utp->tolerance) || | |
981 | __get_user(txc.time.tv_sec, &utp->time.tv_sec) || | |
982 | __get_user(txc.time.tv_usec, &utp->time.tv_usec) || | |
983 | __get_user(txc.tick, &utp->tick) || | |
984 | __get_user(txc.ppsfreq, &utp->ppsfreq) || | |
985 | __get_user(txc.jitter, &utp->jitter) || | |
986 | __get_user(txc.shift, &utp->shift) || | |
987 | __get_user(txc.stabil, &utp->stabil) || | |
988 | __get_user(txc.jitcnt, &utp->jitcnt) || | |
989 | __get_user(txc.calcnt, &utp->calcnt) || | |
990 | __get_user(txc.errcnt, &utp->errcnt) || | |
991 | __get_user(txc.stbcnt, &utp->stbcnt)) | |
992 | return -EFAULT; | |
993 | ||
994 | ret = do_adjtimex(&txc); | |
995 | ||
996 | if (!access_ok(VERIFY_WRITE, utp, sizeof(struct compat_timex)) || | |
997 | __put_user(txc.modes, &utp->modes) || | |
998 | __put_user(txc.offset, &utp->offset) || | |
999 | __put_user(txc.freq, &utp->freq) || | |
1000 | __put_user(txc.maxerror, &utp->maxerror) || | |
1001 | __put_user(txc.esterror, &utp->esterror) || | |
1002 | __put_user(txc.status, &utp->status) || | |
1003 | __put_user(txc.constant, &utp->constant) || | |
1004 | __put_user(txc.precision, &utp->precision) || | |
1005 | __put_user(txc.tolerance, &utp->tolerance) || | |
1006 | __put_user(txc.time.tv_sec, &utp->time.tv_sec) || | |
1007 | __put_user(txc.time.tv_usec, &utp->time.tv_usec) || | |
1008 | __put_user(txc.tick, &utp->tick) || | |
1009 | __put_user(txc.ppsfreq, &utp->ppsfreq) || | |
1010 | __put_user(txc.jitter, &utp->jitter) || | |
1011 | __put_user(txc.shift, &utp->shift) || | |
1012 | __put_user(txc.stabil, &utp->stabil) || | |
1013 | __put_user(txc.jitcnt, &utp->jitcnt) || | |
1014 | __put_user(txc.calcnt, &utp->calcnt) || | |
1015 | __put_user(txc.errcnt, &utp->errcnt) || | |
1016 | __put_user(txc.stbcnt, &utp->stbcnt) || | |
1017 | __put_user(txc.tai, &utp->tai)) | |
1018 | ret = -EFAULT; | |
1019 | ||
1020 | return ret; | |
1021 | } | |
1022 | ||
1023 | #ifdef CONFIG_NUMA | |
1024 | asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_pages, | |
1025 | compat_uptr_t __user *pages32, | |
1026 | const int __user *nodes, | |
1027 | int __user *status, | |
1028 | int flags) | |
1029 | { | |
1030 | const void __user * __user *pages; | |
1031 | int i; | |
1032 | ||
1033 | pages = compat_alloc_user_space(nr_pages * sizeof(void *)); | |
1034 | for (i = 0; i < nr_pages; i++) { | |
1035 | compat_uptr_t p; | |
1036 | ||
1037 | if (get_user(p, pages32 + i) || | |
1038 | put_user(compat_ptr(p), pages + i)) | |
1039 | return -EFAULT; | |
1040 | } | |
1041 | return sys_move_pages(pid, nr_pages, pages, nodes, status, flags); | |
1042 | } | |
1043 | ||
1044 | asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, | |
1045 | compat_ulong_t maxnode, | |
1046 | const compat_ulong_t __user *old_nodes, | |
1047 | const compat_ulong_t __user *new_nodes) | |
1048 | { | |
1049 | unsigned long __user *old = NULL; | |
1050 | unsigned long __user *new = NULL; | |
1051 | nodemask_t tmp_mask; | |
1052 | unsigned long nr_bits; | |
1053 | unsigned long size; | |
1054 | ||
1055 | nr_bits = min_t(unsigned long, maxnode - 1, MAX_NUMNODES); | |
1056 | size = ALIGN(nr_bits, BITS_PER_LONG) / 8; | |
1057 | if (old_nodes) { | |
1058 | if (compat_get_bitmap(nodes_addr(tmp_mask), old_nodes, nr_bits)) | |
1059 | return -EFAULT; | |
1060 | old = compat_alloc_user_space(new_nodes ? size * 2 : size); | |
1061 | if (new_nodes) | |
1062 | new = old + size / sizeof(unsigned long); | |
1063 | if (copy_to_user(old, nodes_addr(tmp_mask), size)) | |
1064 | return -EFAULT; | |
1065 | } | |
1066 | if (new_nodes) { | |
1067 | if (compat_get_bitmap(nodes_addr(tmp_mask), new_nodes, nr_bits)) | |
1068 | return -EFAULT; | |
1069 | if (new == NULL) | |
1070 | new = compat_alloc_user_space(size); | |
1071 | if (copy_to_user(new, nodes_addr(tmp_mask), size)) | |
1072 | return -EFAULT; | |
1073 | } | |
1074 | return sys_migrate_pages(pid, nr_bits + 1, old, new); | |
1075 | } | |
1076 | #endif | |
1077 | ||
1078 | struct compat_sysinfo { | |
1079 | s32 uptime; | |
1080 | u32 loads[3]; | |
1081 | u32 totalram; | |
1082 | u32 freeram; | |
1083 | u32 sharedram; | |
1084 | u32 bufferram; | |
1085 | u32 totalswap; | |
1086 | u32 freeswap; | |
1087 | u16 procs; | |
1088 | u16 pad; | |
1089 | u32 totalhigh; | |
1090 | u32 freehigh; | |
1091 | u32 mem_unit; | |
1092 | char _f[20-2*sizeof(u32)-sizeof(int)]; | |
1093 | }; | |
1094 | ||
1095 | asmlinkage long | |
1096 | compat_sys_sysinfo(struct compat_sysinfo __user *info) | |
1097 | { | |
1098 | struct sysinfo s; | |
1099 | ||
1100 | do_sysinfo(&s); | |
1101 | ||
1102 | /* Check to see if any memory value is too large for 32-bit and scale | |
1103 | * down if needed | |
1104 | */ | |
1105 | if ((s.totalram >> 32) || (s.totalswap >> 32)) { | |
1106 | int bitcount = 0; | |
1107 | ||
1108 | while (s.mem_unit < PAGE_SIZE) { | |
1109 | s.mem_unit <<= 1; | |
1110 | bitcount++; | |
1111 | } | |
1112 | ||
1113 | s.totalram >>= bitcount; | |
1114 | s.freeram >>= bitcount; | |
1115 | s.sharedram >>= bitcount; | |
1116 | s.bufferram >>= bitcount; | |
1117 | s.totalswap >>= bitcount; | |
1118 | s.freeswap >>= bitcount; | |
1119 | s.totalhigh >>= bitcount; | |
1120 | s.freehigh >>= bitcount; | |
1121 | } | |
1122 | ||
1123 | if (!access_ok(VERIFY_WRITE, info, sizeof(struct compat_sysinfo)) || | |
1124 | __put_user (s.uptime, &info->uptime) || | |
1125 | __put_user (s.loads[0], &info->loads[0]) || | |
1126 | __put_user (s.loads[1], &info->loads[1]) || | |
1127 | __put_user (s.loads[2], &info->loads[2]) || | |
1128 | __put_user (s.totalram, &info->totalram) || | |
1129 | __put_user (s.freeram, &info->freeram) || | |
1130 | __put_user (s.sharedram, &info->sharedram) || | |
1131 | __put_user (s.bufferram, &info->bufferram) || | |
1132 | __put_user (s.totalswap, &info->totalswap) || | |
1133 | __put_user (s.freeswap, &info->freeswap) || | |
1134 | __put_user (s.procs, &info->procs) || | |
1135 | __put_user (s.totalhigh, &info->totalhigh) || | |
1136 | __put_user (s.freehigh, &info->freehigh) || | |
1137 | __put_user (s.mem_unit, &info->mem_unit)) | |
1138 | return -EFAULT; | |
1139 | ||
1140 | return 0; | |
1141 | } |