Commit | Line | Data |
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1da177e4 LT |
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 */ | |
1da177e4 LT |
20 | #include <linux/syscalls.h> |
21 | #include <linux/unistd.h> | |
22 | #include <linux/security.h> | |
3158e941 | 23 | #include <linux/timex.h> |
1b2db9fb | 24 | #include <linux/migrate.h> |
1711ef38 | 25 | #include <linux/posix-timers.h> |
1da177e4 LT |
26 | |
27 | #include <asm/uaccess.h> | |
1da177e4 LT |
28 | |
29 | int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts) | |
30 | { | |
31 | return (!access_ok(VERIFY_READ, cts, sizeof(*cts)) || | |
32 | __get_user(ts->tv_sec, &cts->tv_sec) || | |
33 | __get_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0; | |
34 | } | |
35 | ||
36 | int put_compat_timespec(const struct timespec *ts, struct compat_timespec __user *cts) | |
37 | { | |
38 | return (!access_ok(VERIFY_WRITE, cts, sizeof(*cts)) || | |
39 | __put_user(ts->tv_sec, &cts->tv_sec) || | |
40 | __put_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0; | |
41 | } | |
42 | ||
41652937 ON |
43 | static long compat_nanosleep_restart(struct restart_block *restart) |
44 | { | |
45 | struct compat_timespec __user *rmtp; | |
46 | struct timespec rmt; | |
47 | mm_segment_t oldfs; | |
48 | long ret; | |
49 | ||
029a07e0 | 50 | restart->nanosleep.rmtp = (struct timespec __user *) &rmt; |
41652937 ON |
51 | oldfs = get_fs(); |
52 | set_fs(KERNEL_DS); | |
53 | ret = hrtimer_nanosleep_restart(restart); | |
54 | set_fs(oldfs); | |
55 | ||
56 | if (ret) { | |
029a07e0 | 57 | rmtp = restart->nanosleep.compat_rmtp; |
41652937 ON |
58 | |
59 | if (rmtp && put_compat_timespec(&rmt, rmtp)) | |
60 | return -EFAULT; | |
61 | } | |
62 | ||
63 | return ret; | |
64 | } | |
65 | ||
1da177e4 | 66 | asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp, |
c70878b4 | 67 | struct compat_timespec __user *rmtp) |
1da177e4 | 68 | { |
c70878b4 | 69 | struct timespec tu, rmt; |
41652937 | 70 | mm_segment_t oldfs; |
c70878b4 | 71 | long ret; |
1da177e4 | 72 | |
c70878b4 | 73 | if (get_compat_timespec(&tu, rqtp)) |
1da177e4 LT |
74 | return -EFAULT; |
75 | ||
c70878b4 | 76 | if (!timespec_valid(&tu)) |
1da177e4 LT |
77 | return -EINVAL; |
78 | ||
41652937 ON |
79 | oldfs = get_fs(); |
80 | set_fs(KERNEL_DS); | |
81 | ret = hrtimer_nanosleep(&tu, | |
82 | rmtp ? (struct timespec __user *)&rmt : NULL, | |
83 | HRTIMER_MODE_REL, CLOCK_MONOTONIC); | |
84 | set_fs(oldfs); | |
85 | ||
86 | if (ret) { | |
87 | struct restart_block *restart | |
88 | = ¤t_thread_info()->restart_block; | |
89 | ||
90 | restart->fn = compat_nanosleep_restart; | |
029a07e0 | 91 | restart->nanosleep.compat_rmtp = rmtp; |
1da177e4 | 92 | |
41652937 | 93 | if (rmtp && put_compat_timespec(&rmt, rmtp)) |
1da177e4 LT |
94 | return -EFAULT; |
95 | } | |
c70878b4 AB |
96 | |
97 | return ret; | |
1da177e4 LT |
98 | } |
99 | ||
100 | static inline long get_compat_itimerval(struct itimerval *o, | |
101 | struct compat_itimerval __user *i) | |
102 | { | |
103 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
104 | (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | | |
105 | __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | | |
106 | __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | | |
107 | __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); | |
108 | } | |
109 | ||
110 | static inline long put_compat_itimerval(struct compat_itimerval __user *o, | |
111 | struct itimerval *i) | |
112 | { | |
113 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
114 | (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | | |
115 | __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | | |
116 | __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | | |
117 | __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); | |
118 | } | |
119 | ||
120 | asmlinkage long compat_sys_getitimer(int which, | |
121 | struct compat_itimerval __user *it) | |
122 | { | |
123 | struct itimerval kit; | |
124 | int error; | |
125 | ||
126 | error = do_getitimer(which, &kit); | |
127 | if (!error && put_compat_itimerval(it, &kit)) | |
128 | error = -EFAULT; | |
129 | return error; | |
130 | } | |
131 | ||
132 | asmlinkage long compat_sys_setitimer(int which, | |
133 | struct compat_itimerval __user *in, | |
134 | struct compat_itimerval __user *out) | |
135 | { | |
136 | struct itimerval kin, kout; | |
137 | int error; | |
138 | ||
139 | if (in) { | |
140 | if (get_compat_itimerval(&kin, in)) | |
141 | return -EFAULT; | |
142 | } else | |
143 | memset(&kin, 0, sizeof(kin)); | |
144 | ||
145 | error = do_setitimer(which, &kin, out ? &kout : NULL); | |
146 | if (error || !out) | |
147 | return error; | |
148 | if (put_compat_itimerval(out, &kout)) | |
149 | return -EFAULT; | |
150 | return 0; | |
151 | } | |
152 | ||
153 | asmlinkage long compat_sys_times(struct compat_tms __user *tbuf) | |
154 | { | |
155 | /* | |
156 | * In the SMP world we might just be unlucky and have one of | |
157 | * the times increment as we use it. Since the value is an | |
158 | * atomically safe type this is just fine. Conceptually its | |
159 | * as if the syscall took an instant longer to occur. | |
160 | */ | |
161 | if (tbuf) { | |
162 | struct compat_tms tmp; | |
163 | struct task_struct *tsk = current; | |
164 | struct task_struct *t; | |
165 | cputime_t utime, stime, cutime, cstime; | |
166 | ||
167 | read_lock(&tasklist_lock); | |
168 | utime = tsk->signal->utime; | |
169 | stime = tsk->signal->stime; | |
170 | t = tsk; | |
171 | do { | |
172 | utime = cputime_add(utime, t->utime); | |
173 | stime = cputime_add(stime, t->stime); | |
174 | t = next_thread(t); | |
175 | } while (t != tsk); | |
176 | ||
177 | /* | |
178 | * While we have tasklist_lock read-locked, no dying thread | |
179 | * can be updating current->signal->[us]time. Instead, | |
180 | * we got their counts included in the live thread loop. | |
181 | * However, another thread can come in right now and | |
182 | * do a wait call that updates current->signal->c[us]time. | |
183 | * To make sure we always see that pair updated atomically, | |
184 | * we take the siglock around fetching them. | |
185 | */ | |
186 | spin_lock_irq(&tsk->sighand->siglock); | |
187 | cutime = tsk->signal->cutime; | |
188 | cstime = tsk->signal->cstime; | |
189 | spin_unlock_irq(&tsk->sighand->siglock); | |
190 | read_unlock(&tasklist_lock); | |
191 | ||
192 | tmp.tms_utime = compat_jiffies_to_clock_t(cputime_to_jiffies(utime)); | |
193 | tmp.tms_stime = compat_jiffies_to_clock_t(cputime_to_jiffies(stime)); | |
194 | tmp.tms_cutime = compat_jiffies_to_clock_t(cputime_to_jiffies(cutime)); | |
195 | tmp.tms_cstime = compat_jiffies_to_clock_t(cputime_to_jiffies(cstime)); | |
196 | if (copy_to_user(tbuf, &tmp, sizeof(tmp))) | |
197 | return -EFAULT; | |
198 | } | |
199 | return compat_jiffies_to_clock_t(jiffies); | |
200 | } | |
201 | ||
202 | /* | |
203 | * Assumption: old_sigset_t and compat_old_sigset_t are both | |
204 | * types that can be passed to put_user()/get_user(). | |
205 | */ | |
206 | ||
207 | asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set) | |
208 | { | |
209 | old_sigset_t s; | |
210 | long ret; | |
211 | mm_segment_t old_fs = get_fs(); | |
212 | ||
213 | set_fs(KERNEL_DS); | |
214 | ret = sys_sigpending((old_sigset_t __user *) &s); | |
215 | set_fs(old_fs); | |
216 | if (ret == 0) | |
217 | ret = put_user(s, set); | |
218 | return ret; | |
219 | } | |
220 | ||
221 | asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set, | |
222 | compat_old_sigset_t __user *oset) | |
223 | { | |
224 | old_sigset_t s; | |
225 | long ret; | |
226 | mm_segment_t old_fs; | |
227 | ||
228 | if (set && get_user(s, set)) | |
229 | return -EFAULT; | |
230 | old_fs = get_fs(); | |
231 | set_fs(KERNEL_DS); | |
232 | ret = sys_sigprocmask(how, | |
233 | set ? (old_sigset_t __user *) &s : NULL, | |
234 | oset ? (old_sigset_t __user *) &s : NULL); | |
235 | set_fs(old_fs); | |
236 | if (ret == 0) | |
237 | if (oset) | |
238 | ret = put_user(s, oset); | |
239 | return ret; | |
240 | } | |
241 | ||
1da177e4 LT |
242 | asmlinkage long compat_sys_setrlimit(unsigned int resource, |
243 | struct compat_rlimit __user *rlim) | |
244 | { | |
245 | struct rlimit r; | |
246 | int ret; | |
247 | mm_segment_t old_fs = get_fs (); | |
248 | ||
bd3a8492 DW |
249 | if (resource >= RLIM_NLIMITS) |
250 | return -EINVAL; | |
1da177e4 LT |
251 | |
252 | if (!access_ok(VERIFY_READ, rlim, sizeof(*rlim)) || | |
253 | __get_user(r.rlim_cur, &rlim->rlim_cur) || | |
254 | __get_user(r.rlim_max, &rlim->rlim_max)) | |
255 | return -EFAULT; | |
256 | ||
257 | if (r.rlim_cur == COMPAT_RLIM_INFINITY) | |
258 | r.rlim_cur = RLIM_INFINITY; | |
259 | if (r.rlim_max == COMPAT_RLIM_INFINITY) | |
260 | r.rlim_max = RLIM_INFINITY; | |
261 | set_fs(KERNEL_DS); | |
262 | ret = sys_setrlimit(resource, (struct rlimit __user *) &r); | |
263 | set_fs(old_fs); | |
264 | return ret; | |
265 | } | |
266 | ||
267 | #ifdef COMPAT_RLIM_OLD_INFINITY | |
268 | ||
269 | asmlinkage long compat_sys_old_getrlimit(unsigned int resource, | |
270 | struct compat_rlimit __user *rlim) | |
271 | { | |
272 | struct rlimit r; | |
273 | int ret; | |
274 | mm_segment_t old_fs = get_fs(); | |
275 | ||
276 | set_fs(KERNEL_DS); | |
277 | ret = sys_old_getrlimit(resource, &r); | |
278 | set_fs(old_fs); | |
279 | ||
280 | if (!ret) { | |
281 | if (r.rlim_cur > COMPAT_RLIM_OLD_INFINITY) | |
282 | r.rlim_cur = COMPAT_RLIM_INFINITY; | |
283 | if (r.rlim_max > COMPAT_RLIM_OLD_INFINITY) | |
284 | r.rlim_max = COMPAT_RLIM_INFINITY; | |
285 | ||
286 | if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) || | |
287 | __put_user(r.rlim_cur, &rlim->rlim_cur) || | |
288 | __put_user(r.rlim_max, &rlim->rlim_max)) | |
289 | return -EFAULT; | |
290 | } | |
291 | return ret; | |
292 | } | |
293 | ||
294 | #endif | |
295 | ||
296 | asmlinkage long compat_sys_getrlimit (unsigned int resource, | |
297 | struct compat_rlimit __user *rlim) | |
298 | { | |
299 | struct rlimit r; | |
300 | int ret; | |
301 | mm_segment_t old_fs = get_fs(); | |
302 | ||
303 | set_fs(KERNEL_DS); | |
304 | ret = sys_getrlimit(resource, (struct rlimit __user *) &r); | |
305 | set_fs(old_fs); | |
306 | if (!ret) { | |
307 | if (r.rlim_cur > COMPAT_RLIM_INFINITY) | |
308 | r.rlim_cur = COMPAT_RLIM_INFINITY; | |
309 | if (r.rlim_max > COMPAT_RLIM_INFINITY) | |
310 | r.rlim_max = COMPAT_RLIM_INFINITY; | |
311 | ||
312 | if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) || | |
313 | __put_user(r.rlim_cur, &rlim->rlim_cur) || | |
314 | __put_user(r.rlim_max, &rlim->rlim_max)) | |
315 | return -EFAULT; | |
316 | } | |
317 | return ret; | |
318 | } | |
319 | ||
320 | int put_compat_rusage(const struct rusage *r, struct compat_rusage __user *ru) | |
321 | { | |
322 | if (!access_ok(VERIFY_WRITE, ru, sizeof(*ru)) || | |
323 | __put_user(r->ru_utime.tv_sec, &ru->ru_utime.tv_sec) || | |
324 | __put_user(r->ru_utime.tv_usec, &ru->ru_utime.tv_usec) || | |
325 | __put_user(r->ru_stime.tv_sec, &ru->ru_stime.tv_sec) || | |
326 | __put_user(r->ru_stime.tv_usec, &ru->ru_stime.tv_usec) || | |
327 | __put_user(r->ru_maxrss, &ru->ru_maxrss) || | |
328 | __put_user(r->ru_ixrss, &ru->ru_ixrss) || | |
329 | __put_user(r->ru_idrss, &ru->ru_idrss) || | |
330 | __put_user(r->ru_isrss, &ru->ru_isrss) || | |
331 | __put_user(r->ru_minflt, &ru->ru_minflt) || | |
332 | __put_user(r->ru_majflt, &ru->ru_majflt) || | |
333 | __put_user(r->ru_nswap, &ru->ru_nswap) || | |
334 | __put_user(r->ru_inblock, &ru->ru_inblock) || | |
335 | __put_user(r->ru_oublock, &ru->ru_oublock) || | |
336 | __put_user(r->ru_msgsnd, &ru->ru_msgsnd) || | |
337 | __put_user(r->ru_msgrcv, &ru->ru_msgrcv) || | |
338 | __put_user(r->ru_nsignals, &ru->ru_nsignals) || | |
339 | __put_user(r->ru_nvcsw, &ru->ru_nvcsw) || | |
340 | __put_user(r->ru_nivcsw, &ru->ru_nivcsw)) | |
341 | return -EFAULT; | |
342 | return 0; | |
343 | } | |
344 | ||
345 | asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru) | |
346 | { | |
347 | struct rusage r; | |
348 | int ret; | |
349 | mm_segment_t old_fs = get_fs(); | |
350 | ||
351 | set_fs(KERNEL_DS); | |
352 | ret = sys_getrusage(who, (struct rusage __user *) &r); | |
353 | set_fs(old_fs); | |
354 | ||
355 | if (ret) | |
356 | return ret; | |
357 | ||
358 | if (put_compat_rusage(&r, ru)) | |
359 | return -EFAULT; | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
364 | asmlinkage long | |
365 | compat_sys_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options, | |
366 | struct compat_rusage __user *ru) | |
367 | { | |
368 | if (!ru) { | |
369 | return sys_wait4(pid, stat_addr, options, NULL); | |
370 | } else { | |
371 | struct rusage r; | |
372 | int ret; | |
373 | unsigned int status; | |
374 | mm_segment_t old_fs = get_fs(); | |
375 | ||
376 | set_fs (KERNEL_DS); | |
377 | ret = sys_wait4(pid, | |
378 | (stat_addr ? | |
379 | (unsigned int __user *) &status : NULL), | |
380 | options, (struct rusage __user *) &r); | |
381 | set_fs (old_fs); | |
382 | ||
383 | if (ret > 0) { | |
384 | if (put_compat_rusage(&r, ru)) | |
385 | return -EFAULT; | |
386 | if (stat_addr && put_user(status, stat_addr)) | |
387 | return -EFAULT; | |
388 | } | |
389 | return ret; | |
390 | } | |
391 | } | |
392 | ||
393 | asmlinkage long compat_sys_waitid(int which, compat_pid_t pid, | |
394 | struct compat_siginfo __user *uinfo, int options, | |
395 | struct compat_rusage __user *uru) | |
396 | { | |
397 | siginfo_t info; | |
398 | struct rusage ru; | |
399 | long ret; | |
400 | mm_segment_t old_fs = get_fs(); | |
401 | ||
402 | memset(&info, 0, sizeof(info)); | |
403 | ||
404 | set_fs(KERNEL_DS); | |
405 | ret = sys_waitid(which, pid, (siginfo_t __user *)&info, options, | |
406 | uru ? (struct rusage __user *)&ru : NULL); | |
407 | set_fs(old_fs); | |
408 | ||
409 | if ((ret < 0) || (info.si_signo == 0)) | |
410 | return ret; | |
411 | ||
412 | if (uru) { | |
413 | ret = put_compat_rusage(&ru, uru); | |
414 | if (ret) | |
415 | return ret; | |
416 | } | |
417 | ||
418 | BUG_ON(info.si_code & __SI_MASK); | |
419 | info.si_code |= __SI_CHLD; | |
420 | return copy_siginfo_to_user32(uinfo, &info); | |
421 | } | |
422 | ||
423 | static int compat_get_user_cpu_mask(compat_ulong_t __user *user_mask_ptr, | |
424 | unsigned len, cpumask_t *new_mask) | |
425 | { | |
426 | unsigned long *k; | |
427 | ||
428 | if (len < sizeof(cpumask_t)) | |
429 | memset(new_mask, 0, sizeof(cpumask_t)); | |
430 | else if (len > sizeof(cpumask_t)) | |
431 | len = sizeof(cpumask_t); | |
432 | ||
433 | k = cpus_addr(*new_mask); | |
434 | return compat_get_bitmap(k, user_mask_ptr, len * 8); | |
435 | } | |
436 | ||
437 | asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, | |
438 | unsigned int len, | |
439 | compat_ulong_t __user *user_mask_ptr) | |
440 | { | |
441 | cpumask_t new_mask; | |
442 | int retval; | |
443 | ||
444 | retval = compat_get_user_cpu_mask(user_mask_ptr, len, &new_mask); | |
445 | if (retval) | |
446 | return retval; | |
447 | ||
b53e921b | 448 | return sched_setaffinity(pid, &new_mask); |
1da177e4 LT |
449 | } |
450 | ||
451 | asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, unsigned int len, | |
452 | compat_ulong_t __user *user_mask_ptr) | |
453 | { | |
454 | int ret; | |
455 | cpumask_t mask; | |
456 | unsigned long *k; | |
457 | unsigned int min_length = sizeof(cpumask_t); | |
458 | ||
459 | if (NR_CPUS <= BITS_PER_COMPAT_LONG) | |
460 | min_length = sizeof(compat_ulong_t); | |
461 | ||
462 | if (len < min_length) | |
463 | return -EINVAL; | |
464 | ||
465 | ret = sched_getaffinity(pid, &mask); | |
466 | if (ret < 0) | |
467 | return ret; | |
468 | ||
469 | k = cpus_addr(mask); | |
470 | ret = compat_put_bitmap(user_mask_ptr, k, min_length * 8); | |
471 | if (ret) | |
472 | return ret; | |
473 | ||
474 | return min_length; | |
475 | } | |
476 | ||
83f5d126 DL |
477 | int get_compat_itimerspec(struct itimerspec *dst, |
478 | const struct compat_itimerspec __user *src) | |
bd3a8492 | 479 | { |
1da177e4 LT |
480 | if (get_compat_timespec(&dst->it_interval, &src->it_interval) || |
481 | get_compat_timespec(&dst->it_value, &src->it_value)) | |
482 | return -EFAULT; | |
483 | return 0; | |
bd3a8492 | 484 | } |
1da177e4 | 485 | |
83f5d126 DL |
486 | int put_compat_itimerspec(struct compat_itimerspec __user *dst, |
487 | const struct itimerspec *src) | |
bd3a8492 | 488 | { |
1da177e4 LT |
489 | if (put_compat_timespec(&src->it_interval, &dst->it_interval) || |
490 | put_compat_timespec(&src->it_value, &dst->it_value)) | |
491 | return -EFAULT; | |
492 | return 0; | |
bd3a8492 | 493 | } |
1da177e4 | 494 | |
3a0f69d5 CH |
495 | long compat_sys_timer_create(clockid_t which_clock, |
496 | struct compat_sigevent __user *timer_event_spec, | |
497 | timer_t __user *created_timer_id) | |
498 | { | |
499 | struct sigevent __user *event = NULL; | |
500 | ||
501 | if (timer_event_spec) { | |
502 | struct sigevent kevent; | |
503 | ||
504 | event = compat_alloc_user_space(sizeof(*event)); | |
505 | if (get_compat_sigevent(&kevent, timer_event_spec) || | |
506 | copy_to_user(event, &kevent, sizeof(*event))) | |
507 | return -EFAULT; | |
508 | } | |
509 | ||
510 | return sys_timer_create(which_clock, event, created_timer_id); | |
511 | } | |
512 | ||
1da177e4 | 513 | long compat_sys_timer_settime(timer_t timer_id, int flags, |
bd3a8492 | 514 | struct compat_itimerspec __user *new, |
1da177e4 | 515 | struct compat_itimerspec __user *old) |
bd3a8492 | 516 | { |
1da177e4 LT |
517 | long err; |
518 | mm_segment_t oldfs; | |
519 | struct itimerspec newts, oldts; | |
520 | ||
521 | if (!new) | |
522 | return -EINVAL; | |
523 | if (get_compat_itimerspec(&newts, new)) | |
bd3a8492 | 524 | return -EFAULT; |
1da177e4 LT |
525 | oldfs = get_fs(); |
526 | set_fs(KERNEL_DS); | |
527 | err = sys_timer_settime(timer_id, flags, | |
528 | (struct itimerspec __user *) &newts, | |
529 | (struct itimerspec __user *) &oldts); | |
bd3a8492 | 530 | set_fs(oldfs); |
1da177e4 LT |
531 | if (!err && old && put_compat_itimerspec(old, &oldts)) |
532 | return -EFAULT; | |
533 | return err; | |
bd3a8492 | 534 | } |
1da177e4 LT |
535 | |
536 | long compat_sys_timer_gettime(timer_t timer_id, | |
537 | struct compat_itimerspec __user *setting) | |
bd3a8492 | 538 | { |
1da177e4 LT |
539 | long err; |
540 | mm_segment_t oldfs; | |
bd3a8492 | 541 | struct itimerspec ts; |
1da177e4 LT |
542 | |
543 | oldfs = get_fs(); | |
544 | set_fs(KERNEL_DS); | |
545 | err = sys_timer_gettime(timer_id, | |
bd3a8492 DW |
546 | (struct itimerspec __user *) &ts); |
547 | set_fs(oldfs); | |
1da177e4 LT |
548 | if (!err && put_compat_itimerspec(setting, &ts)) |
549 | return -EFAULT; | |
550 | return err; | |
bd3a8492 | 551 | } |
1da177e4 LT |
552 | |
553 | long compat_sys_clock_settime(clockid_t which_clock, | |
554 | struct compat_timespec __user *tp) | |
555 | { | |
556 | long err; | |
557 | mm_segment_t oldfs; | |
bd3a8492 | 558 | struct timespec ts; |
1da177e4 LT |
559 | |
560 | if (get_compat_timespec(&ts, tp)) | |
bd3a8492 | 561 | return -EFAULT; |
1da177e4 | 562 | oldfs = get_fs(); |
bd3a8492 | 563 | set_fs(KERNEL_DS); |
1da177e4 LT |
564 | err = sys_clock_settime(which_clock, |
565 | (struct timespec __user *) &ts); | |
566 | set_fs(oldfs); | |
567 | return err; | |
bd3a8492 | 568 | } |
1da177e4 LT |
569 | |
570 | long compat_sys_clock_gettime(clockid_t which_clock, | |
571 | struct compat_timespec __user *tp) | |
572 | { | |
573 | long err; | |
574 | mm_segment_t oldfs; | |
bd3a8492 | 575 | struct timespec ts; |
1da177e4 LT |
576 | |
577 | oldfs = get_fs(); | |
578 | set_fs(KERNEL_DS); | |
579 | err = sys_clock_gettime(which_clock, | |
580 | (struct timespec __user *) &ts); | |
581 | set_fs(oldfs); | |
582 | if (!err && put_compat_timespec(&ts, tp)) | |
bd3a8492 | 583 | return -EFAULT; |
1da177e4 | 584 | return err; |
bd3a8492 | 585 | } |
1da177e4 LT |
586 | |
587 | long compat_sys_clock_getres(clockid_t which_clock, | |
588 | struct compat_timespec __user *tp) | |
589 | { | |
590 | long err; | |
591 | mm_segment_t oldfs; | |
bd3a8492 | 592 | struct timespec ts; |
1da177e4 LT |
593 | |
594 | oldfs = get_fs(); | |
595 | set_fs(KERNEL_DS); | |
596 | err = sys_clock_getres(which_clock, | |
597 | (struct timespec __user *) &ts); | |
598 | set_fs(oldfs); | |
599 | if (!err && tp && put_compat_timespec(&ts, tp)) | |
bd3a8492 | 600 | return -EFAULT; |
1da177e4 | 601 | return err; |
bd3a8492 | 602 | } |
1da177e4 | 603 | |
1711ef38 TA |
604 | static long compat_clock_nanosleep_restart(struct restart_block *restart) |
605 | { | |
606 | long err; | |
607 | mm_segment_t oldfs; | |
608 | struct timespec tu; | |
029a07e0 | 609 | struct compat_timespec *rmtp = restart->nanosleep.compat_rmtp; |
1711ef38 | 610 | |
029a07e0 | 611 | restart->nanosleep.rmtp = (struct timespec __user *) &tu; |
1711ef38 TA |
612 | oldfs = get_fs(); |
613 | set_fs(KERNEL_DS); | |
614 | err = clock_nanosleep_restart(restart); | |
615 | set_fs(oldfs); | |
616 | ||
617 | if ((err == -ERESTART_RESTARTBLOCK) && rmtp && | |
618 | put_compat_timespec(&tu, rmtp)) | |
619 | return -EFAULT; | |
620 | ||
621 | if (err == -ERESTART_RESTARTBLOCK) { | |
622 | restart->fn = compat_clock_nanosleep_restart; | |
029a07e0 | 623 | restart->nanosleep.compat_rmtp = rmtp; |
1711ef38 TA |
624 | } |
625 | return err; | |
626 | } | |
627 | ||
1da177e4 LT |
628 | long compat_sys_clock_nanosleep(clockid_t which_clock, int flags, |
629 | struct compat_timespec __user *rqtp, | |
630 | struct compat_timespec __user *rmtp) | |
631 | { | |
632 | long err; | |
633 | mm_segment_t oldfs; | |
bd3a8492 | 634 | struct timespec in, out; |
1711ef38 | 635 | struct restart_block *restart; |
1da177e4 | 636 | |
bd3a8492 | 637 | if (get_compat_timespec(&in, rqtp)) |
1da177e4 LT |
638 | return -EFAULT; |
639 | ||
640 | oldfs = get_fs(); | |
641 | set_fs(KERNEL_DS); | |
642 | err = sys_clock_nanosleep(which_clock, flags, | |
643 | (struct timespec __user *) &in, | |
644 | (struct timespec __user *) &out); | |
645 | set_fs(oldfs); | |
1711ef38 | 646 | |
1da177e4 LT |
647 | if ((err == -ERESTART_RESTARTBLOCK) && rmtp && |
648 | put_compat_timespec(&out, rmtp)) | |
649 | return -EFAULT; | |
1711ef38 TA |
650 | |
651 | if (err == -ERESTART_RESTARTBLOCK) { | |
652 | restart = ¤t_thread_info()->restart_block; | |
653 | restart->fn = compat_clock_nanosleep_restart; | |
029a07e0 | 654 | restart->nanosleep.compat_rmtp = rmtp; |
1711ef38 | 655 | } |
bd3a8492 DW |
656 | return err; |
657 | } | |
1da177e4 LT |
658 | |
659 | /* | |
660 | * We currently only need the following fields from the sigevent | |
661 | * structure: sigev_value, sigev_signo, sig_notify and (sometimes | |
662 | * sigev_notify_thread_id). The others are handled in user mode. | |
663 | * We also assume that copying sigev_value.sival_int is sufficient | |
664 | * to keep all the bits of sigev_value.sival_ptr intact. | |
665 | */ | |
666 | int get_compat_sigevent(struct sigevent *event, | |
667 | const struct compat_sigevent __user *u_event) | |
668 | { | |
51410d3c | 669 | memset(event, 0, sizeof(*event)); |
1da177e4 LT |
670 | return (!access_ok(VERIFY_READ, u_event, sizeof(*u_event)) || |
671 | __get_user(event->sigev_value.sival_int, | |
672 | &u_event->sigev_value.sival_int) || | |
673 | __get_user(event->sigev_signo, &u_event->sigev_signo) || | |
674 | __get_user(event->sigev_notify, &u_event->sigev_notify) || | |
675 | __get_user(event->sigev_notify_thread_id, | |
676 | &u_event->sigev_notify_thread_id)) | |
677 | ? -EFAULT : 0; | |
678 | } | |
679 | ||
5fa3839a | 680 | long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, |
1da177e4 LT |
681 | unsigned long bitmap_size) |
682 | { | |
683 | int i, j; | |
684 | unsigned long m; | |
685 | compat_ulong_t um; | |
686 | unsigned long nr_compat_longs; | |
687 | ||
688 | /* align bitmap up to nearest compat_long_t boundary */ | |
689 | bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG); | |
690 | ||
691 | if (!access_ok(VERIFY_READ, umask, bitmap_size / 8)) | |
692 | return -EFAULT; | |
693 | ||
694 | nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size); | |
695 | ||
696 | for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) { | |
697 | m = 0; | |
698 | ||
699 | for (j = 0; j < sizeof(m)/sizeof(um); j++) { | |
700 | /* | |
701 | * We dont want to read past the end of the userspace | |
702 | * bitmap. We must however ensure the end of the | |
703 | * kernel bitmap is zeroed. | |
704 | */ | |
705 | if (nr_compat_longs-- > 0) { | |
706 | if (__get_user(um, umask)) | |
707 | return -EFAULT; | |
708 | } else { | |
709 | um = 0; | |
710 | } | |
711 | ||
712 | umask++; | |
713 | m |= (long)um << (j * BITS_PER_COMPAT_LONG); | |
714 | } | |
715 | *mask++ = m; | |
716 | } | |
717 | ||
718 | return 0; | |
719 | } | |
720 | ||
721 | long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, | |
722 | unsigned long bitmap_size) | |
723 | { | |
724 | int i, j; | |
725 | unsigned long m; | |
726 | compat_ulong_t um; | |
727 | unsigned long nr_compat_longs; | |
728 | ||
729 | /* align bitmap up to nearest compat_long_t boundary */ | |
730 | bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG); | |
731 | ||
732 | if (!access_ok(VERIFY_WRITE, umask, bitmap_size / 8)) | |
733 | return -EFAULT; | |
734 | ||
735 | nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size); | |
736 | ||
737 | for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) { | |
738 | m = *mask++; | |
739 | ||
740 | for (j = 0; j < sizeof(m)/sizeof(um); j++) { | |
741 | um = m; | |
742 | ||
743 | /* | |
744 | * We dont want to write past the end of the userspace | |
745 | * bitmap. | |
746 | */ | |
747 | if (nr_compat_longs-- > 0) { | |
748 | if (__put_user(um, umask)) | |
749 | return -EFAULT; | |
750 | } | |
751 | ||
752 | umask++; | |
753 | m >>= 4*sizeof(um); | |
754 | m >>= 4*sizeof(um); | |
755 | } | |
756 | } | |
757 | ||
758 | return 0; | |
759 | } | |
760 | ||
761 | void | |
762 | sigset_from_compat (sigset_t *set, compat_sigset_t *compat) | |
763 | { | |
764 | switch (_NSIG_WORDS) { | |
1da177e4 LT |
765 | case 4: set->sig[3] = compat->sig[6] | (((long)compat->sig[7]) << 32 ); |
766 | case 3: set->sig[2] = compat->sig[4] | (((long)compat->sig[5]) << 32 ); | |
767 | case 2: set->sig[1] = compat->sig[2] | (((long)compat->sig[3]) << 32 ); | |
768 | case 1: set->sig[0] = compat->sig[0] | (((long)compat->sig[1]) << 32 ); | |
1da177e4 LT |
769 | } |
770 | } | |
771 | ||
772 | asmlinkage long | |
773 | compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese, | |
774 | struct compat_siginfo __user *uinfo, | |
775 | struct compat_timespec __user *uts, compat_size_t sigsetsize) | |
776 | { | |
777 | compat_sigset_t s32; | |
778 | sigset_t s; | |
779 | int sig; | |
780 | struct timespec t; | |
781 | siginfo_t info; | |
782 | long ret, timeout = 0; | |
783 | ||
784 | if (sigsetsize != sizeof(sigset_t)) | |
785 | return -EINVAL; | |
786 | ||
787 | if (copy_from_user(&s32, uthese, sizeof(compat_sigset_t))) | |
788 | return -EFAULT; | |
789 | sigset_from_compat(&s, &s32); | |
790 | sigdelsetmask(&s,sigmask(SIGKILL)|sigmask(SIGSTOP)); | |
791 | signotset(&s); | |
792 | ||
793 | if (uts) { | |
794 | if (get_compat_timespec (&t, uts)) | |
795 | return -EFAULT; | |
796 | if (t.tv_nsec >= 1000000000L || t.tv_nsec < 0 | |
797 | || t.tv_sec < 0) | |
798 | return -EINVAL; | |
799 | } | |
800 | ||
801 | spin_lock_irq(¤t->sighand->siglock); | |
802 | sig = dequeue_signal(current, &s, &info); | |
803 | if (!sig) { | |
804 | timeout = MAX_SCHEDULE_TIMEOUT; | |
805 | if (uts) | |
806 | timeout = timespec_to_jiffies(&t) | |
807 | +(t.tv_sec || t.tv_nsec); | |
808 | if (timeout) { | |
809 | current->real_blocked = current->blocked; | |
810 | sigandsets(¤t->blocked, ¤t->blocked, &s); | |
811 | ||
812 | recalc_sigpending(); | |
813 | spin_unlock_irq(¤t->sighand->siglock); | |
814 | ||
75bcc8c5 | 815 | timeout = schedule_timeout_interruptible(timeout); |
1da177e4 LT |
816 | |
817 | spin_lock_irq(¤t->sighand->siglock); | |
818 | sig = dequeue_signal(current, &s, &info); | |
819 | current->blocked = current->real_blocked; | |
820 | siginitset(¤t->real_blocked, 0); | |
821 | recalc_sigpending(); | |
822 | } | |
823 | } | |
824 | spin_unlock_irq(¤t->sighand->siglock); | |
825 | ||
826 | if (sig) { | |
827 | ret = sig; | |
828 | if (uinfo) { | |
829 | if (copy_siginfo_to_user32(uinfo, &info)) | |
830 | ret = -EFAULT; | |
831 | } | |
832 | }else { | |
833 | ret = timeout?-EINTR:-EAGAIN; | |
834 | } | |
835 | return ret; | |
836 | ||
837 | } | |
838 | ||
839 | #ifdef __ARCH_WANT_COMPAT_SYS_TIME | |
840 | ||
841 | /* compat_time_t is a 32 bit "long" and needs to get converted. */ | |
842 | ||
843 | asmlinkage long compat_sys_time(compat_time_t __user * tloc) | |
844 | { | |
845 | compat_time_t i; | |
846 | struct timeval tv; | |
847 | ||
848 | do_gettimeofday(&tv); | |
849 | i = tv.tv_sec; | |
850 | ||
851 | if (tloc) { | |
852 | if (put_user(i,tloc)) | |
853 | i = -EFAULT; | |
854 | } | |
855 | return i; | |
856 | } | |
857 | ||
858 | asmlinkage long compat_sys_stime(compat_time_t __user *tptr) | |
859 | { | |
860 | struct timespec tv; | |
861 | int err; | |
862 | ||
863 | if (get_user(tv.tv_sec, tptr)) | |
864 | return -EFAULT; | |
865 | ||
866 | tv.tv_nsec = 0; | |
867 | ||
868 | err = security_settime(&tv, NULL); | |
869 | if (err) | |
870 | return err; | |
871 | ||
872 | do_settimeofday(&tv); | |
873 | return 0; | |
874 | } | |
875 | ||
876 | #endif /* __ARCH_WANT_COMPAT_SYS_TIME */ | |
150256d8 DW |
877 | |
878 | #ifdef __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND | |
879 | asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat_size_t sigsetsize) | |
880 | { | |
881 | sigset_t newset; | |
882 | compat_sigset_t newset32; | |
883 | ||
884 | /* XXX: Don't preclude handling different sized sigset_t's. */ | |
885 | if (sigsetsize != sizeof(sigset_t)) | |
886 | return -EINVAL; | |
887 | ||
888 | if (copy_from_user(&newset32, unewset, sizeof(compat_sigset_t))) | |
889 | return -EFAULT; | |
890 | sigset_from_compat(&newset, &newset32); | |
891 | sigdelsetmask(&newset, sigmask(SIGKILL)|sigmask(SIGSTOP)); | |
892 | ||
893 | spin_lock_irq(¤t->sighand->siglock); | |
894 | current->saved_sigmask = current->blocked; | |
895 | current->blocked = newset; | |
896 | recalc_sigpending(); | |
897 | spin_unlock_irq(¤t->sighand->siglock); | |
898 | ||
899 | current->state = TASK_INTERRUPTIBLE; | |
900 | schedule(); | |
4e4c22c7 | 901 | set_restore_sigmask(); |
150256d8 DW |
902 | return -ERESTARTNOHAND; |
903 | } | |
904 | #endif /* __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND */ | |
3158e941 SR |
905 | |
906 | asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp) | |
907 | { | |
908 | struct timex txc; | |
909 | int ret; | |
910 | ||
911 | memset(&txc, 0, sizeof(struct timex)); | |
912 | ||
913 | if (!access_ok(VERIFY_READ, utp, sizeof(struct compat_timex)) || | |
914 | __get_user(txc.modes, &utp->modes) || | |
915 | __get_user(txc.offset, &utp->offset) || | |
916 | __get_user(txc.freq, &utp->freq) || | |
917 | __get_user(txc.maxerror, &utp->maxerror) || | |
918 | __get_user(txc.esterror, &utp->esterror) || | |
919 | __get_user(txc.status, &utp->status) || | |
920 | __get_user(txc.constant, &utp->constant) || | |
921 | __get_user(txc.precision, &utp->precision) || | |
922 | __get_user(txc.tolerance, &utp->tolerance) || | |
923 | __get_user(txc.time.tv_sec, &utp->time.tv_sec) || | |
924 | __get_user(txc.time.tv_usec, &utp->time.tv_usec) || | |
925 | __get_user(txc.tick, &utp->tick) || | |
926 | __get_user(txc.ppsfreq, &utp->ppsfreq) || | |
927 | __get_user(txc.jitter, &utp->jitter) || | |
928 | __get_user(txc.shift, &utp->shift) || | |
929 | __get_user(txc.stabil, &utp->stabil) || | |
930 | __get_user(txc.jitcnt, &utp->jitcnt) || | |
931 | __get_user(txc.calcnt, &utp->calcnt) || | |
932 | __get_user(txc.errcnt, &utp->errcnt) || | |
933 | __get_user(txc.stbcnt, &utp->stbcnt)) | |
934 | return -EFAULT; | |
935 | ||
936 | ret = do_adjtimex(&txc); | |
937 | ||
938 | if (!access_ok(VERIFY_WRITE, utp, sizeof(struct compat_timex)) || | |
939 | __put_user(txc.modes, &utp->modes) || | |
940 | __put_user(txc.offset, &utp->offset) || | |
941 | __put_user(txc.freq, &utp->freq) || | |
942 | __put_user(txc.maxerror, &utp->maxerror) || | |
943 | __put_user(txc.esterror, &utp->esterror) || | |
944 | __put_user(txc.status, &utp->status) || | |
945 | __put_user(txc.constant, &utp->constant) || | |
946 | __put_user(txc.precision, &utp->precision) || | |
947 | __put_user(txc.tolerance, &utp->tolerance) || | |
948 | __put_user(txc.time.tv_sec, &utp->time.tv_sec) || | |
949 | __put_user(txc.time.tv_usec, &utp->time.tv_usec) || | |
950 | __put_user(txc.tick, &utp->tick) || | |
951 | __put_user(txc.ppsfreq, &utp->ppsfreq) || | |
952 | __put_user(txc.jitter, &utp->jitter) || | |
953 | __put_user(txc.shift, &utp->shift) || | |
954 | __put_user(txc.stabil, &utp->stabil) || | |
955 | __put_user(txc.jitcnt, &utp->jitcnt) || | |
956 | __put_user(txc.calcnt, &utp->calcnt) || | |
957 | __put_user(txc.errcnt, &utp->errcnt) || | |
153b5d05 RZ |
958 | __put_user(txc.stbcnt, &utp->stbcnt) || |
959 | __put_user(txc.tai, &utp->tai)) | |
3158e941 SR |
960 | ret = -EFAULT; |
961 | ||
962 | return ret; | |
963 | } | |
1b2db9fb CL |
964 | |
965 | #ifdef CONFIG_NUMA | |
966 | asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_pages, | |
9216dfad | 967 | compat_uptr_t __user *pages32, |
1b2db9fb CL |
968 | const int __user *nodes, |
969 | int __user *status, | |
970 | int flags) | |
971 | { | |
972 | const void __user * __user *pages; | |
973 | int i; | |
974 | ||
975 | pages = compat_alloc_user_space(nr_pages * sizeof(void *)); | |
976 | for (i = 0; i < nr_pages; i++) { | |
977 | compat_uptr_t p; | |
978 | ||
9216dfad | 979 | if (get_user(p, pages32 + i) || |
1b2db9fb CL |
980 | put_user(compat_ptr(p), pages + i)) |
981 | return -EFAULT; | |
982 | } | |
983 | return sys_move_pages(pid, nr_pages, pages, nodes, status, flags); | |
984 | } | |
3fd59397 SR |
985 | |
986 | asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, | |
987 | compat_ulong_t maxnode, | |
988 | const compat_ulong_t __user *old_nodes, | |
989 | const compat_ulong_t __user *new_nodes) | |
990 | { | |
991 | unsigned long __user *old = NULL; | |
992 | unsigned long __user *new = NULL; | |
993 | nodemask_t tmp_mask; | |
994 | unsigned long nr_bits; | |
995 | unsigned long size; | |
996 | ||
997 | nr_bits = min_t(unsigned long, maxnode - 1, MAX_NUMNODES); | |
998 | size = ALIGN(nr_bits, BITS_PER_LONG) / 8; | |
999 | if (old_nodes) { | |
1000 | if (compat_get_bitmap(nodes_addr(tmp_mask), old_nodes, nr_bits)) | |
1001 | return -EFAULT; | |
1002 | old = compat_alloc_user_space(new_nodes ? size * 2 : size); | |
1003 | if (new_nodes) | |
1004 | new = old + size / sizeof(unsigned long); | |
1005 | if (copy_to_user(old, nodes_addr(tmp_mask), size)) | |
1006 | return -EFAULT; | |
1007 | } | |
1008 | if (new_nodes) { | |
1009 | if (compat_get_bitmap(nodes_addr(tmp_mask), new_nodes, nr_bits)) | |
1010 | return -EFAULT; | |
1011 | if (new == NULL) | |
1012 | new = compat_alloc_user_space(size); | |
1013 | if (copy_to_user(new, nodes_addr(tmp_mask), size)) | |
1014 | return -EFAULT; | |
1015 | } | |
1016 | return sys_migrate_pages(pid, nr_bits + 1, old, new); | |
1017 | } | |
1b2db9fb | 1018 | #endif |
d4d23add KM |
1019 | |
1020 | struct compat_sysinfo { | |
1021 | s32 uptime; | |
1022 | u32 loads[3]; | |
1023 | u32 totalram; | |
1024 | u32 freeram; | |
1025 | u32 sharedram; | |
1026 | u32 bufferram; | |
1027 | u32 totalswap; | |
1028 | u32 freeswap; | |
1029 | u16 procs; | |
1030 | u16 pad; | |
1031 | u32 totalhigh; | |
1032 | u32 freehigh; | |
1033 | u32 mem_unit; | |
1034 | char _f[20-2*sizeof(u32)-sizeof(int)]; | |
1035 | }; | |
1036 | ||
1037 | asmlinkage long | |
1038 | compat_sys_sysinfo(struct compat_sysinfo __user *info) | |
1039 | { | |
1040 | struct sysinfo s; | |
1041 | ||
1042 | do_sysinfo(&s); | |
1043 | ||
1044 | /* Check to see if any memory value is too large for 32-bit and scale | |
1045 | * down if needed | |
1046 | */ | |
1047 | if ((s.totalram >> 32) || (s.totalswap >> 32)) { | |
1048 | int bitcount = 0; | |
1049 | ||
1050 | while (s.mem_unit < PAGE_SIZE) { | |
1051 | s.mem_unit <<= 1; | |
1052 | bitcount++; | |
1053 | } | |
1054 | ||
1055 | s.totalram >>= bitcount; | |
1056 | s.freeram >>= bitcount; | |
1057 | s.sharedram >>= bitcount; | |
1058 | s.bufferram >>= bitcount; | |
1059 | s.totalswap >>= bitcount; | |
1060 | s.freeswap >>= bitcount; | |
1061 | s.totalhigh >>= bitcount; | |
1062 | s.freehigh >>= bitcount; | |
1063 | } | |
1064 | ||
1065 | if (!access_ok(VERIFY_WRITE, info, sizeof(struct compat_sysinfo)) || | |
1066 | __put_user (s.uptime, &info->uptime) || | |
1067 | __put_user (s.loads[0], &info->loads[0]) || | |
1068 | __put_user (s.loads[1], &info->loads[1]) || | |
1069 | __put_user (s.loads[2], &info->loads[2]) || | |
1070 | __put_user (s.totalram, &info->totalram) || | |
1071 | __put_user (s.freeram, &info->freeram) || | |
1072 | __put_user (s.sharedram, &info->sharedram) || | |
1073 | __put_user (s.bufferram, &info->bufferram) || | |
1074 | __put_user (s.totalswap, &info->totalswap) || | |
1075 | __put_user (s.freeswap, &info->freeswap) || | |
1076 | __put_user (s.procs, &info->procs) || | |
1077 | __put_user (s.totalhigh, &info->totalhigh) || | |
1078 | __put_user (s.freehigh, &info->freehigh) || | |
1079 | __put_user (s.mem_unit, &info->mem_unit)) | |
1080 | return -EFAULT; | |
1081 | ||
1082 | return 0; | |
1083 | } |