2 * linux/kernel/compat.c
4 * Kernel compatibililty routines for e.g. 32 bit syscall support
7 * Copyright (C) 2002-2003 Stephen Rothwell, IBM Corporation
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.
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>
28 #include <asm/uaccess.h>
31 * Note that the native side is already converted to a timespec, because
32 * that's what we want anyway.
34 static int compat_get_timeval(struct timespec *o,
35 struct compat_timeval __user *i)
39 if (get_user(o->tv_sec, &i->tv_sec) ||
40 get_user(usec, &i->tv_usec))
42 o->tv_nsec = usec * 1000;
46 static int compat_put_timeval(struct compat_timeval __user *o,
49 return (put_user(i->tv_sec, &o->tv_sec) ||
50 put_user(i->tv_usec, &o->tv_usec)) ? -EFAULT : 0;
53 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv,
54 struct timezone __user *tz)
58 do_gettimeofday(&ktv);
59 if (compat_put_timeval(tv, &ktv))
63 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
70 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv,
71 struct timezone __user *tz)
77 if (compat_get_timeval(&kts, tv))
81 if (copy_from_user(&ktz, tz, sizeof(ktz)))
85 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
88 int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts)
90 return (!access_ok(VERIFY_READ, cts, sizeof(*cts)) ||
91 __get_user(ts->tv_sec, &cts->tv_sec) ||
92 __get_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
95 int put_compat_timespec(const struct timespec *ts, struct compat_timespec __user *cts)
97 return (!access_ok(VERIFY_WRITE, cts, sizeof(*cts)) ||
98 __put_user(ts->tv_sec, &cts->tv_sec) ||
99 __put_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
102 static long compat_nanosleep_restart(struct restart_block *restart)
104 struct compat_timespec __user *rmtp;
109 restart->nanosleep.rmtp = (struct timespec __user *) &rmt;
112 ret = hrtimer_nanosleep_restart(restart);
116 rmtp = restart->nanosleep.compat_rmtp;
118 if (rmtp && put_compat_timespec(&rmt, rmtp))
125 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
126 struct compat_timespec __user *rmtp)
128 struct timespec tu, rmt;
132 if (get_compat_timespec(&tu, rqtp))
135 if (!timespec_valid(&tu))
140 ret = hrtimer_nanosleep(&tu,
141 rmtp ? (struct timespec __user *)&rmt : NULL,
142 HRTIMER_MODE_REL, CLOCK_MONOTONIC);
146 struct restart_block *restart
147 = ¤t_thread_info()->restart_block;
149 restart->fn = compat_nanosleep_restart;
150 restart->nanosleep.compat_rmtp = rmtp;
152 if (rmtp && put_compat_timespec(&rmt, rmtp))
159 static inline long get_compat_itimerval(struct itimerval *o,
160 struct compat_itimerval __user *i)
162 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
163 (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) |
164 __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) |
165 __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) |
166 __get_user(o->it_value.tv_usec, &i->it_value.tv_usec)));
169 static inline long put_compat_itimerval(struct compat_itimerval __user *o,
172 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
173 (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) |
174 __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) |
175 __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) |
176 __put_user(i->it_value.tv_usec, &o->it_value.tv_usec)));
179 asmlinkage long compat_sys_getitimer(int which,
180 struct compat_itimerval __user *it)
182 struct itimerval kit;
185 error = do_getitimer(which, &kit);
186 if (!error && put_compat_itimerval(it, &kit))
191 asmlinkage long compat_sys_setitimer(int which,
192 struct compat_itimerval __user *in,
193 struct compat_itimerval __user *out)
195 struct itimerval kin, kout;
199 if (get_compat_itimerval(&kin, in))
202 memset(&kin, 0, sizeof(kin));
204 error = do_setitimer(which, &kin, out ? &kout : NULL);
207 if (put_compat_itimerval(out, &kout))
212 static compat_clock_t clock_t_to_compat_clock_t(clock_t x)
214 return compat_jiffies_to_clock_t(clock_t_to_jiffies(x));
217 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf)
221 struct compat_tms tmp;
224 /* Convert our struct tms to the compat version. */
225 tmp.tms_utime = clock_t_to_compat_clock_t(tms.tms_utime);
226 tmp.tms_stime = clock_t_to_compat_clock_t(tms.tms_stime);
227 tmp.tms_cutime = clock_t_to_compat_clock_t(tms.tms_cutime);
228 tmp.tms_cstime = clock_t_to_compat_clock_t(tms.tms_cstime);
229 if (copy_to_user(tbuf, &tmp, sizeof(tmp)))
232 return compat_jiffies_to_clock_t(jiffies);
236 * Assumption: old_sigset_t and compat_old_sigset_t are both
237 * types that can be passed to put_user()/get_user().
240 asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set)
244 mm_segment_t old_fs = get_fs();
247 ret = sys_sigpending((old_sigset_t __user *) &s);
250 ret = put_user(s, set);
254 asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set,
255 compat_old_sigset_t __user *oset)
261 if (set && get_user(s, set))
265 ret = sys_sigprocmask(how,
266 set ? (old_sigset_t __user *) &s : NULL,
267 oset ? (old_sigset_t __user *) &s : NULL);
271 ret = put_user(s, oset);
275 asmlinkage long compat_sys_setrlimit(unsigned int resource,
276 struct compat_rlimit __user *rlim)
280 mm_segment_t old_fs = get_fs ();
282 if (resource >= RLIM_NLIMITS)
285 if (!access_ok(VERIFY_READ, rlim, sizeof(*rlim)) ||
286 __get_user(r.rlim_cur, &rlim->rlim_cur) ||
287 __get_user(r.rlim_max, &rlim->rlim_max))
290 if (r.rlim_cur == COMPAT_RLIM_INFINITY)
291 r.rlim_cur = RLIM_INFINITY;
292 if (r.rlim_max == COMPAT_RLIM_INFINITY)
293 r.rlim_max = RLIM_INFINITY;
295 ret = sys_setrlimit(resource, (struct rlimit __user *) &r);
300 #ifdef COMPAT_RLIM_OLD_INFINITY
302 asmlinkage long compat_sys_old_getrlimit(unsigned int resource,
303 struct compat_rlimit __user *rlim)
307 mm_segment_t old_fs = get_fs();
310 ret = sys_old_getrlimit(resource, &r);
314 if (r.rlim_cur > COMPAT_RLIM_OLD_INFINITY)
315 r.rlim_cur = COMPAT_RLIM_INFINITY;
316 if (r.rlim_max > COMPAT_RLIM_OLD_INFINITY)
317 r.rlim_max = COMPAT_RLIM_INFINITY;
319 if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) ||
320 __put_user(r.rlim_cur, &rlim->rlim_cur) ||
321 __put_user(r.rlim_max, &rlim->rlim_max))
329 asmlinkage long compat_sys_getrlimit (unsigned int resource,
330 struct compat_rlimit __user *rlim)
334 mm_segment_t old_fs = get_fs();
337 ret = sys_getrlimit(resource, (struct rlimit __user *) &r);
340 if (r.rlim_cur > COMPAT_RLIM_INFINITY)
341 r.rlim_cur = COMPAT_RLIM_INFINITY;
342 if (r.rlim_max > COMPAT_RLIM_INFINITY)
343 r.rlim_max = COMPAT_RLIM_INFINITY;
345 if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) ||
346 __put_user(r.rlim_cur, &rlim->rlim_cur) ||
347 __put_user(r.rlim_max, &rlim->rlim_max))
353 int put_compat_rusage(const struct rusage *r, struct compat_rusage __user *ru)
355 if (!access_ok(VERIFY_WRITE, ru, sizeof(*ru)) ||
356 __put_user(r->ru_utime.tv_sec, &ru->ru_utime.tv_sec) ||
357 __put_user(r->ru_utime.tv_usec, &ru->ru_utime.tv_usec) ||
358 __put_user(r->ru_stime.tv_sec, &ru->ru_stime.tv_sec) ||
359 __put_user(r->ru_stime.tv_usec, &ru->ru_stime.tv_usec) ||
360 __put_user(r->ru_maxrss, &ru->ru_maxrss) ||
361 __put_user(r->ru_ixrss, &ru->ru_ixrss) ||
362 __put_user(r->ru_idrss, &ru->ru_idrss) ||
363 __put_user(r->ru_isrss, &ru->ru_isrss) ||
364 __put_user(r->ru_minflt, &ru->ru_minflt) ||
365 __put_user(r->ru_majflt, &ru->ru_majflt) ||
366 __put_user(r->ru_nswap, &ru->ru_nswap) ||
367 __put_user(r->ru_inblock, &ru->ru_inblock) ||
368 __put_user(r->ru_oublock, &ru->ru_oublock) ||
369 __put_user(r->ru_msgsnd, &ru->ru_msgsnd) ||
370 __put_user(r->ru_msgrcv, &ru->ru_msgrcv) ||
371 __put_user(r->ru_nsignals, &ru->ru_nsignals) ||
372 __put_user(r->ru_nvcsw, &ru->ru_nvcsw) ||
373 __put_user(r->ru_nivcsw, &ru->ru_nivcsw))
378 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru)
382 mm_segment_t old_fs = get_fs();
385 ret = sys_getrusage(who, (struct rusage __user *) &r);
391 if (put_compat_rusage(&r, ru))
398 compat_sys_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options,
399 struct compat_rusage __user *ru)
402 return sys_wait4(pid, stat_addr, options, NULL);
407 mm_segment_t old_fs = get_fs();
412 (unsigned int __user *) &status : NULL),
413 options, (struct rusage __user *) &r);
417 if (put_compat_rusage(&r, ru))
419 if (stat_addr && put_user(status, stat_addr))
426 asmlinkage long compat_sys_waitid(int which, compat_pid_t pid,
427 struct compat_siginfo __user *uinfo, int options,
428 struct compat_rusage __user *uru)
433 mm_segment_t old_fs = get_fs();
435 memset(&info, 0, sizeof(info));
438 ret = sys_waitid(which, pid, (siginfo_t __user *)&info, options,
439 uru ? (struct rusage __user *)&ru : NULL);
442 if ((ret < 0) || (info.si_signo == 0))
446 ret = put_compat_rusage(&ru, uru);
451 BUG_ON(info.si_code & __SI_MASK);
452 info.si_code |= __SI_CHLD;
453 return copy_siginfo_to_user32(uinfo, &info);
456 static int compat_get_user_cpu_mask(compat_ulong_t __user *user_mask_ptr,
457 unsigned len, cpumask_t *new_mask)
461 if (len < sizeof(cpumask_t))
462 memset(new_mask, 0, sizeof(cpumask_t));
463 else if (len > sizeof(cpumask_t))
464 len = sizeof(cpumask_t);
466 k = cpus_addr(*new_mask);
467 return compat_get_bitmap(k, user_mask_ptr, len * 8);
470 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
472 compat_ulong_t __user *user_mask_ptr)
477 retval = compat_get_user_cpu_mask(user_mask_ptr, len, &new_mask);
481 return sched_setaffinity(pid, &new_mask);
484 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, unsigned int len,
485 compat_ulong_t __user *user_mask_ptr)
490 unsigned int min_length = sizeof(cpumask_t);
492 if (NR_CPUS <= BITS_PER_COMPAT_LONG)
493 min_length = sizeof(compat_ulong_t);
495 if (len < min_length)
498 ret = sched_getaffinity(pid, &mask);
503 ret = compat_put_bitmap(user_mask_ptr, k, min_length * 8);
510 int get_compat_itimerspec(struct itimerspec *dst,
511 const struct compat_itimerspec __user *src)
513 if (get_compat_timespec(&dst->it_interval, &src->it_interval) ||
514 get_compat_timespec(&dst->it_value, &src->it_value))
519 int put_compat_itimerspec(struct compat_itimerspec __user *dst,
520 const struct itimerspec *src)
522 if (put_compat_timespec(&src->it_interval, &dst->it_interval) ||
523 put_compat_timespec(&src->it_value, &dst->it_value))
528 long compat_sys_timer_create(clockid_t which_clock,
529 struct compat_sigevent __user *timer_event_spec,
530 timer_t __user *created_timer_id)
532 struct sigevent __user *event = NULL;
534 if (timer_event_spec) {
535 struct sigevent kevent;
537 event = compat_alloc_user_space(sizeof(*event));
538 if (get_compat_sigevent(&kevent, timer_event_spec) ||
539 copy_to_user(event, &kevent, sizeof(*event)))
543 return sys_timer_create(which_clock, event, created_timer_id);
546 long compat_sys_timer_settime(timer_t timer_id, int flags,
547 struct compat_itimerspec __user *new,
548 struct compat_itimerspec __user *old)
552 struct itimerspec newts, oldts;
556 if (get_compat_itimerspec(&newts, new))
560 err = sys_timer_settime(timer_id, flags,
561 (struct itimerspec __user *) &newts,
562 (struct itimerspec __user *) &oldts);
564 if (!err && old && put_compat_itimerspec(old, &oldts))
569 long compat_sys_timer_gettime(timer_t timer_id,
570 struct compat_itimerspec __user *setting)
574 struct itimerspec ts;
578 err = sys_timer_gettime(timer_id,
579 (struct itimerspec __user *) &ts);
581 if (!err && put_compat_itimerspec(setting, &ts))
586 long compat_sys_clock_settime(clockid_t which_clock,
587 struct compat_timespec __user *tp)
593 if (get_compat_timespec(&ts, tp))
597 err = sys_clock_settime(which_clock,
598 (struct timespec __user *) &ts);
603 long compat_sys_clock_gettime(clockid_t which_clock,
604 struct compat_timespec __user *tp)
612 err = sys_clock_gettime(which_clock,
613 (struct timespec __user *) &ts);
615 if (!err && put_compat_timespec(&ts, tp))
620 long compat_sys_clock_getres(clockid_t which_clock,
621 struct compat_timespec __user *tp)
629 err = sys_clock_getres(which_clock,
630 (struct timespec __user *) &ts);
632 if (!err && tp && put_compat_timespec(&ts, tp))
637 static long compat_clock_nanosleep_restart(struct restart_block *restart)
642 struct compat_timespec *rmtp = restart->nanosleep.compat_rmtp;
644 restart->nanosleep.rmtp = (struct timespec __user *) &tu;
647 err = clock_nanosleep_restart(restart);
650 if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
651 put_compat_timespec(&tu, rmtp))
654 if (err == -ERESTART_RESTARTBLOCK) {
655 restart->fn = compat_clock_nanosleep_restart;
656 restart->nanosleep.compat_rmtp = rmtp;
661 long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
662 struct compat_timespec __user *rqtp,
663 struct compat_timespec __user *rmtp)
667 struct timespec in, out;
668 struct restart_block *restart;
670 if (get_compat_timespec(&in, rqtp))
675 err = sys_clock_nanosleep(which_clock, flags,
676 (struct timespec __user *) &in,
677 (struct timespec __user *) &out);
680 if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
681 put_compat_timespec(&out, rmtp))
684 if (err == -ERESTART_RESTARTBLOCK) {
685 restart = ¤t_thread_info()->restart_block;
686 restart->fn = compat_clock_nanosleep_restart;
687 restart->nanosleep.compat_rmtp = rmtp;
693 * We currently only need the following fields from the sigevent
694 * structure: sigev_value, sigev_signo, sig_notify and (sometimes
695 * sigev_notify_thread_id). The others are handled in user mode.
696 * We also assume that copying sigev_value.sival_int is sufficient
697 * to keep all the bits of sigev_value.sival_ptr intact.
699 int get_compat_sigevent(struct sigevent *event,
700 const struct compat_sigevent __user *u_event)
702 memset(event, 0, sizeof(*event));
703 return (!access_ok(VERIFY_READ, u_event, sizeof(*u_event)) ||
704 __get_user(event->sigev_value.sival_int,
705 &u_event->sigev_value.sival_int) ||
706 __get_user(event->sigev_signo, &u_event->sigev_signo) ||
707 __get_user(event->sigev_notify, &u_event->sigev_notify) ||
708 __get_user(event->sigev_notify_thread_id,
709 &u_event->sigev_notify_thread_id))
713 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
714 unsigned long bitmap_size)
719 unsigned long nr_compat_longs;
721 /* align bitmap up to nearest compat_long_t boundary */
722 bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
724 if (!access_ok(VERIFY_READ, umask, bitmap_size / 8))
727 nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
729 for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) {
732 for (j = 0; j < sizeof(m)/sizeof(um); j++) {
734 * We dont want to read past the end of the userspace
735 * bitmap. We must however ensure the end of the
736 * kernel bitmap is zeroed.
738 if (nr_compat_longs-- > 0) {
739 if (__get_user(um, umask))
746 m |= (long)um << (j * BITS_PER_COMPAT_LONG);
754 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
755 unsigned long bitmap_size)
760 unsigned long nr_compat_longs;
762 /* align bitmap up to nearest compat_long_t boundary */
763 bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
765 if (!access_ok(VERIFY_WRITE, umask, bitmap_size / 8))
768 nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
770 for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) {
773 for (j = 0; j < sizeof(m)/sizeof(um); j++) {
777 * We dont want to write past the end of the userspace
780 if (nr_compat_longs-- > 0) {
781 if (__put_user(um, umask))
795 sigset_from_compat (sigset_t *set, compat_sigset_t *compat)
797 switch (_NSIG_WORDS) {
798 case 4: set->sig[3] = compat->sig[6] | (((long)compat->sig[7]) << 32 );
799 case 3: set->sig[2] = compat->sig[4] | (((long)compat->sig[5]) << 32 );
800 case 2: set->sig[1] = compat->sig[2] | (((long)compat->sig[3]) << 32 );
801 case 1: set->sig[0] = compat->sig[0] | (((long)compat->sig[1]) << 32 );
806 compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese,
807 struct compat_siginfo __user *uinfo,
808 struct compat_timespec __user *uts, compat_size_t sigsetsize)
815 long ret, timeout = 0;
817 if (sigsetsize != sizeof(sigset_t))
820 if (copy_from_user(&s32, uthese, sizeof(compat_sigset_t)))
822 sigset_from_compat(&s, &s32);
823 sigdelsetmask(&s,sigmask(SIGKILL)|sigmask(SIGSTOP));
827 if (get_compat_timespec (&t, uts))
829 if (t.tv_nsec >= 1000000000L || t.tv_nsec < 0
834 spin_lock_irq(¤t->sighand->siglock);
835 sig = dequeue_signal(current, &s, &info);
837 timeout = MAX_SCHEDULE_TIMEOUT;
839 timeout = timespec_to_jiffies(&t)
840 +(t.tv_sec || t.tv_nsec);
842 current->real_blocked = current->blocked;
843 sigandsets(¤t->blocked, ¤t->blocked, &s);
846 spin_unlock_irq(¤t->sighand->siglock);
848 timeout = schedule_timeout_interruptible(timeout);
850 spin_lock_irq(¤t->sighand->siglock);
851 sig = dequeue_signal(current, &s, &info);
852 current->blocked = current->real_blocked;
853 siginitset(¤t->real_blocked, 0);
857 spin_unlock_irq(¤t->sighand->siglock);
862 if (copy_siginfo_to_user32(uinfo, &info))
866 ret = timeout?-EINTR:-EAGAIN;
872 #ifdef __ARCH_WANT_COMPAT_SYS_TIME
874 /* compat_time_t is a 32 bit "long" and needs to get converted. */
876 asmlinkage long compat_sys_time(compat_time_t __user * tloc)
881 do_gettimeofday(&tv);
885 if (put_user(i,tloc))
891 asmlinkage long compat_sys_stime(compat_time_t __user *tptr)
896 if (get_user(tv.tv_sec, tptr))
901 err = security_settime(&tv, NULL);
905 do_settimeofday(&tv);
909 #endif /* __ARCH_WANT_COMPAT_SYS_TIME */
911 #ifdef __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
912 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat_size_t sigsetsize)
915 compat_sigset_t newset32;
917 /* XXX: Don't preclude handling different sized sigset_t's. */
918 if (sigsetsize != sizeof(sigset_t))
921 if (copy_from_user(&newset32, unewset, sizeof(compat_sigset_t)))
923 sigset_from_compat(&newset, &newset32);
924 sigdelsetmask(&newset, sigmask(SIGKILL)|sigmask(SIGSTOP));
926 spin_lock_irq(¤t->sighand->siglock);
927 current->saved_sigmask = current->blocked;
928 current->blocked = newset;
930 spin_unlock_irq(¤t->sighand->siglock);
932 current->state = TASK_INTERRUPTIBLE;
934 set_restore_sigmask();
935 return -ERESTARTNOHAND;
937 #endif /* __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND */
939 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp)
944 memset(&txc, 0, sizeof(struct timex));
946 if (!access_ok(VERIFY_READ, utp, sizeof(struct compat_timex)) ||
947 __get_user(txc.modes, &utp->modes) ||
948 __get_user(txc.offset, &utp->offset) ||
949 __get_user(txc.freq, &utp->freq) ||
950 __get_user(txc.maxerror, &utp->maxerror) ||
951 __get_user(txc.esterror, &utp->esterror) ||
952 __get_user(txc.status, &utp->status) ||
953 __get_user(txc.constant, &utp->constant) ||
954 __get_user(txc.precision, &utp->precision) ||
955 __get_user(txc.tolerance, &utp->tolerance) ||
956 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
957 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
958 __get_user(txc.tick, &utp->tick) ||
959 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
960 __get_user(txc.jitter, &utp->jitter) ||
961 __get_user(txc.shift, &utp->shift) ||
962 __get_user(txc.stabil, &utp->stabil) ||
963 __get_user(txc.jitcnt, &utp->jitcnt) ||
964 __get_user(txc.calcnt, &utp->calcnt) ||
965 __get_user(txc.errcnt, &utp->errcnt) ||
966 __get_user(txc.stbcnt, &utp->stbcnt))
969 ret = do_adjtimex(&txc);
971 if (!access_ok(VERIFY_WRITE, utp, sizeof(struct compat_timex)) ||
972 __put_user(txc.modes, &utp->modes) ||
973 __put_user(txc.offset, &utp->offset) ||
974 __put_user(txc.freq, &utp->freq) ||
975 __put_user(txc.maxerror, &utp->maxerror) ||
976 __put_user(txc.esterror, &utp->esterror) ||
977 __put_user(txc.status, &utp->status) ||
978 __put_user(txc.constant, &utp->constant) ||
979 __put_user(txc.precision, &utp->precision) ||
980 __put_user(txc.tolerance, &utp->tolerance) ||
981 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
982 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
983 __put_user(txc.tick, &utp->tick) ||
984 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
985 __put_user(txc.jitter, &utp->jitter) ||
986 __put_user(txc.shift, &utp->shift) ||
987 __put_user(txc.stabil, &utp->stabil) ||
988 __put_user(txc.jitcnt, &utp->jitcnt) ||
989 __put_user(txc.calcnt, &utp->calcnt) ||
990 __put_user(txc.errcnt, &utp->errcnt) ||
991 __put_user(txc.stbcnt, &utp->stbcnt) ||
992 __put_user(txc.tai, &utp->tai))
999 asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_pages,
1000 compat_uptr_t __user *pages32,
1001 const int __user *nodes,
1005 const void __user * __user *pages;
1008 pages = compat_alloc_user_space(nr_pages * sizeof(void *));
1009 for (i = 0; i < nr_pages; i++) {
1012 if (get_user(p, pages32 + i) ||
1013 put_user(compat_ptr(p), pages + i))
1016 return sys_move_pages(pid, nr_pages, pages, nodes, status, flags);
1019 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
1020 compat_ulong_t maxnode,
1021 const compat_ulong_t __user *old_nodes,
1022 const compat_ulong_t __user *new_nodes)
1024 unsigned long __user *old = NULL;
1025 unsigned long __user *new = NULL;
1026 nodemask_t tmp_mask;
1027 unsigned long nr_bits;
1030 nr_bits = min_t(unsigned long, maxnode - 1, MAX_NUMNODES);
1031 size = ALIGN(nr_bits, BITS_PER_LONG) / 8;
1033 if (compat_get_bitmap(nodes_addr(tmp_mask), old_nodes, nr_bits))
1035 old = compat_alloc_user_space(new_nodes ? size * 2 : size);
1037 new = old + size / sizeof(unsigned long);
1038 if (copy_to_user(old, nodes_addr(tmp_mask), size))
1042 if (compat_get_bitmap(nodes_addr(tmp_mask), new_nodes, nr_bits))
1045 new = compat_alloc_user_space(size);
1046 if (copy_to_user(new, nodes_addr(tmp_mask), size))
1049 return sys_migrate_pages(pid, nr_bits + 1, old, new);
1053 struct compat_sysinfo {
1067 char _f[20-2*sizeof(u32)-sizeof(int)];
1071 compat_sys_sysinfo(struct compat_sysinfo __user *info)
1077 /* Check to see if any memory value is too large for 32-bit and scale
1080 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
1083 while (s.mem_unit < PAGE_SIZE) {
1088 s.totalram >>= bitcount;
1089 s.freeram >>= bitcount;
1090 s.sharedram >>= bitcount;
1091 s.bufferram >>= bitcount;
1092 s.totalswap >>= bitcount;
1093 s.freeswap >>= bitcount;
1094 s.totalhigh >>= bitcount;
1095 s.freehigh >>= bitcount;
1098 if (!access_ok(VERIFY_WRITE, info, sizeof(struct compat_sysinfo)) ||
1099 __put_user (s.uptime, &info->uptime) ||
1100 __put_user (s.loads[0], &info->loads[0]) ||
1101 __put_user (s.loads[1], &info->loads[1]) ||
1102 __put_user (s.loads[2], &info->loads[2]) ||
1103 __put_user (s.totalram, &info->totalram) ||
1104 __put_user (s.freeram, &info->freeram) ||
1105 __put_user (s.sharedram, &info->sharedram) ||
1106 __put_user (s.bufferram, &info->bufferram) ||
1107 __put_user (s.totalswap, &info->totalswap) ||
1108 __put_user (s.freeswap, &info->freeswap) ||
1109 __put_user (s.procs, &info->procs) ||
1110 __put_user (s.totalhigh, &info->totalhigh) ||
1111 __put_user (s.freehigh, &info->freehigh) ||
1112 __put_user (s.mem_unit, &info->mem_unit))