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>
30 int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts)
32 return (!access_ok(VERIFY_READ, cts, sizeof(*cts)) ||
33 __get_user(ts->tv_sec, &cts->tv_sec) ||
34 __get_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
37 int put_compat_timespec(const struct timespec *ts, struct compat_timespec __user *cts)
39 return (!access_ok(VERIFY_WRITE, cts, sizeof(*cts)) ||
40 __put_user(ts->tv_sec, &cts->tv_sec) ||
41 __put_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
44 static long compat_nanosleep_restart(struct restart_block *restart)
46 struct compat_timespec __user *rmtp;
51 restart->nanosleep.rmtp = (struct timespec __user *) &rmt;
54 ret = hrtimer_nanosleep_restart(restart);
58 rmtp = restart->nanosleep.compat_rmtp;
60 if (rmtp && put_compat_timespec(&rmt, rmtp))
67 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
68 struct compat_timespec __user *rmtp)
70 struct timespec tu, rmt;
74 if (get_compat_timespec(&tu, rqtp))
77 if (!timespec_valid(&tu))
82 ret = hrtimer_nanosleep(&tu,
83 rmtp ? (struct timespec __user *)&rmt : NULL,
84 HRTIMER_MODE_REL, CLOCK_MONOTONIC);
88 struct restart_block *restart
89 = ¤t_thread_info()->restart_block;
91 restart->fn = compat_nanosleep_restart;
92 restart->nanosleep.compat_rmtp = rmtp;
94 if (rmtp && put_compat_timespec(&rmt, rmtp))
101 static inline long get_compat_itimerval(struct itimerval *o,
102 struct compat_itimerval __user *i)
104 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
105 (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) |
106 __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) |
107 __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) |
108 __get_user(o->it_value.tv_usec, &i->it_value.tv_usec)));
111 static inline long put_compat_itimerval(struct compat_itimerval __user *o,
114 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
115 (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) |
116 __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) |
117 __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) |
118 __put_user(i->it_value.tv_usec, &o->it_value.tv_usec)));
121 asmlinkage long compat_sys_getitimer(int which,
122 struct compat_itimerval __user *it)
124 struct itimerval kit;
127 error = do_getitimer(which, &kit);
128 if (!error && put_compat_itimerval(it, &kit))
133 asmlinkage long compat_sys_setitimer(int which,
134 struct compat_itimerval __user *in,
135 struct compat_itimerval __user *out)
137 struct itimerval kin, kout;
141 if (get_compat_itimerval(&kin, in))
144 memset(&kin, 0, sizeof(kin));
146 error = do_setitimer(which, &kin, out ? &kout : NULL);
149 if (put_compat_itimerval(out, &kout))
154 static compat_clock_t clock_t_to_compat_clock_t(clock_t x)
156 return compat_jiffies_to_clock_t(clock_t_to_jiffies(x));
159 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf)
163 struct compat_tms tmp;
166 /* Convert our struct tms to the compat version. */
167 tmp.tms_utime = clock_t_to_compat_clock_t(tms.tms_utime);
168 tmp.tms_stime = clock_t_to_compat_clock_t(tms.tms_stime);
169 tmp.tms_cutime = clock_t_to_compat_clock_t(tms.tms_cutime);
170 tmp.tms_cstime = clock_t_to_compat_clock_t(tms.tms_cstime);
171 if (copy_to_user(tbuf, &tmp, sizeof(tmp)))
174 return compat_jiffies_to_clock_t(jiffies);
178 * Assumption: old_sigset_t and compat_old_sigset_t are both
179 * types that can be passed to put_user()/get_user().
182 asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set)
186 mm_segment_t old_fs = get_fs();
189 ret = sys_sigpending((old_sigset_t __user *) &s);
192 ret = put_user(s, set);
196 asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set,
197 compat_old_sigset_t __user *oset)
203 if (set && get_user(s, set))
207 ret = sys_sigprocmask(how,
208 set ? (old_sigset_t __user *) &s : NULL,
209 oset ? (old_sigset_t __user *) &s : NULL);
213 ret = put_user(s, oset);
217 asmlinkage long compat_sys_setrlimit(unsigned int resource,
218 struct compat_rlimit __user *rlim)
222 mm_segment_t old_fs = get_fs ();
224 if (resource >= RLIM_NLIMITS)
227 if (!access_ok(VERIFY_READ, rlim, sizeof(*rlim)) ||
228 __get_user(r.rlim_cur, &rlim->rlim_cur) ||
229 __get_user(r.rlim_max, &rlim->rlim_max))
232 if (r.rlim_cur == COMPAT_RLIM_INFINITY)
233 r.rlim_cur = RLIM_INFINITY;
234 if (r.rlim_max == COMPAT_RLIM_INFINITY)
235 r.rlim_max = RLIM_INFINITY;
237 ret = sys_setrlimit(resource, (struct rlimit __user *) &r);
242 #ifdef COMPAT_RLIM_OLD_INFINITY
244 asmlinkage long compat_sys_old_getrlimit(unsigned int resource,
245 struct compat_rlimit __user *rlim)
249 mm_segment_t old_fs = get_fs();
252 ret = sys_old_getrlimit(resource, &r);
256 if (r.rlim_cur > COMPAT_RLIM_OLD_INFINITY)
257 r.rlim_cur = COMPAT_RLIM_INFINITY;
258 if (r.rlim_max > COMPAT_RLIM_OLD_INFINITY)
259 r.rlim_max = COMPAT_RLIM_INFINITY;
261 if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) ||
262 __put_user(r.rlim_cur, &rlim->rlim_cur) ||
263 __put_user(r.rlim_max, &rlim->rlim_max))
271 asmlinkage long compat_sys_getrlimit (unsigned int resource,
272 struct compat_rlimit __user *rlim)
276 mm_segment_t old_fs = get_fs();
279 ret = sys_getrlimit(resource, (struct rlimit __user *) &r);
282 if (r.rlim_cur > COMPAT_RLIM_INFINITY)
283 r.rlim_cur = COMPAT_RLIM_INFINITY;
284 if (r.rlim_max > COMPAT_RLIM_INFINITY)
285 r.rlim_max = COMPAT_RLIM_INFINITY;
287 if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) ||
288 __put_user(r.rlim_cur, &rlim->rlim_cur) ||
289 __put_user(r.rlim_max, &rlim->rlim_max))
295 int put_compat_rusage(const struct rusage *r, struct compat_rusage __user *ru)
297 if (!access_ok(VERIFY_WRITE, ru, sizeof(*ru)) ||
298 __put_user(r->ru_utime.tv_sec, &ru->ru_utime.tv_sec) ||
299 __put_user(r->ru_utime.tv_usec, &ru->ru_utime.tv_usec) ||
300 __put_user(r->ru_stime.tv_sec, &ru->ru_stime.tv_sec) ||
301 __put_user(r->ru_stime.tv_usec, &ru->ru_stime.tv_usec) ||
302 __put_user(r->ru_maxrss, &ru->ru_maxrss) ||
303 __put_user(r->ru_ixrss, &ru->ru_ixrss) ||
304 __put_user(r->ru_idrss, &ru->ru_idrss) ||
305 __put_user(r->ru_isrss, &ru->ru_isrss) ||
306 __put_user(r->ru_minflt, &ru->ru_minflt) ||
307 __put_user(r->ru_majflt, &ru->ru_majflt) ||
308 __put_user(r->ru_nswap, &ru->ru_nswap) ||
309 __put_user(r->ru_inblock, &ru->ru_inblock) ||
310 __put_user(r->ru_oublock, &ru->ru_oublock) ||
311 __put_user(r->ru_msgsnd, &ru->ru_msgsnd) ||
312 __put_user(r->ru_msgrcv, &ru->ru_msgrcv) ||
313 __put_user(r->ru_nsignals, &ru->ru_nsignals) ||
314 __put_user(r->ru_nvcsw, &ru->ru_nvcsw) ||
315 __put_user(r->ru_nivcsw, &ru->ru_nivcsw))
320 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru)
324 mm_segment_t old_fs = get_fs();
327 ret = sys_getrusage(who, (struct rusage __user *) &r);
333 if (put_compat_rusage(&r, ru))
340 compat_sys_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options,
341 struct compat_rusage __user *ru)
344 return sys_wait4(pid, stat_addr, options, NULL);
349 mm_segment_t old_fs = get_fs();
354 (unsigned int __user *) &status : NULL),
355 options, (struct rusage __user *) &r);
359 if (put_compat_rusage(&r, ru))
361 if (stat_addr && put_user(status, stat_addr))
368 asmlinkage long compat_sys_waitid(int which, compat_pid_t pid,
369 struct compat_siginfo __user *uinfo, int options,
370 struct compat_rusage __user *uru)
375 mm_segment_t old_fs = get_fs();
377 memset(&info, 0, sizeof(info));
380 ret = sys_waitid(which, pid, (siginfo_t __user *)&info, options,
381 uru ? (struct rusage __user *)&ru : NULL);
384 if ((ret < 0) || (info.si_signo == 0))
388 ret = put_compat_rusage(&ru, uru);
393 BUG_ON(info.si_code & __SI_MASK);
394 info.si_code |= __SI_CHLD;
395 return copy_siginfo_to_user32(uinfo, &info);
398 static int compat_get_user_cpu_mask(compat_ulong_t __user *user_mask_ptr,
399 unsigned len, cpumask_t *new_mask)
403 if (len < sizeof(cpumask_t))
404 memset(new_mask, 0, sizeof(cpumask_t));
405 else if (len > sizeof(cpumask_t))
406 len = sizeof(cpumask_t);
408 k = cpus_addr(*new_mask);
409 return compat_get_bitmap(k, user_mask_ptr, len * 8);
412 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
414 compat_ulong_t __user *user_mask_ptr)
419 retval = compat_get_user_cpu_mask(user_mask_ptr, len, &new_mask);
423 return sched_setaffinity(pid, &new_mask);
426 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, unsigned int len,
427 compat_ulong_t __user *user_mask_ptr)
432 unsigned int min_length = sizeof(cpumask_t);
434 if (NR_CPUS <= BITS_PER_COMPAT_LONG)
435 min_length = sizeof(compat_ulong_t);
437 if (len < min_length)
440 ret = sched_getaffinity(pid, &mask);
445 ret = compat_put_bitmap(user_mask_ptr, k, min_length * 8);
452 int get_compat_itimerspec(struct itimerspec *dst,
453 const struct compat_itimerspec __user *src)
455 if (get_compat_timespec(&dst->it_interval, &src->it_interval) ||
456 get_compat_timespec(&dst->it_value, &src->it_value))
461 int put_compat_itimerspec(struct compat_itimerspec __user *dst,
462 const struct itimerspec *src)
464 if (put_compat_timespec(&src->it_interval, &dst->it_interval) ||
465 put_compat_timespec(&src->it_value, &dst->it_value))
470 long compat_sys_timer_create(clockid_t which_clock,
471 struct compat_sigevent __user *timer_event_spec,
472 timer_t __user *created_timer_id)
474 struct sigevent __user *event = NULL;
476 if (timer_event_spec) {
477 struct sigevent kevent;
479 event = compat_alloc_user_space(sizeof(*event));
480 if (get_compat_sigevent(&kevent, timer_event_spec) ||
481 copy_to_user(event, &kevent, sizeof(*event)))
485 return sys_timer_create(which_clock, event, created_timer_id);
488 long compat_sys_timer_settime(timer_t timer_id, int flags,
489 struct compat_itimerspec __user *new,
490 struct compat_itimerspec __user *old)
494 struct itimerspec newts, oldts;
498 if (get_compat_itimerspec(&newts, new))
502 err = sys_timer_settime(timer_id, flags,
503 (struct itimerspec __user *) &newts,
504 (struct itimerspec __user *) &oldts);
506 if (!err && old && put_compat_itimerspec(old, &oldts))
511 long compat_sys_timer_gettime(timer_t timer_id,
512 struct compat_itimerspec __user *setting)
516 struct itimerspec ts;
520 err = sys_timer_gettime(timer_id,
521 (struct itimerspec __user *) &ts);
523 if (!err && put_compat_itimerspec(setting, &ts))
528 long compat_sys_clock_settime(clockid_t which_clock,
529 struct compat_timespec __user *tp)
535 if (get_compat_timespec(&ts, tp))
539 err = sys_clock_settime(which_clock,
540 (struct timespec __user *) &ts);
545 long compat_sys_clock_gettime(clockid_t which_clock,
546 struct compat_timespec __user *tp)
554 err = sys_clock_gettime(which_clock,
555 (struct timespec __user *) &ts);
557 if (!err && put_compat_timespec(&ts, tp))
562 long compat_sys_clock_getres(clockid_t which_clock,
563 struct compat_timespec __user *tp)
571 err = sys_clock_getres(which_clock,
572 (struct timespec __user *) &ts);
574 if (!err && tp && put_compat_timespec(&ts, tp))
579 static long compat_clock_nanosleep_restart(struct restart_block *restart)
584 struct compat_timespec *rmtp = restart->nanosleep.compat_rmtp;
586 restart->nanosleep.rmtp = (struct timespec __user *) &tu;
589 err = clock_nanosleep_restart(restart);
592 if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
593 put_compat_timespec(&tu, rmtp))
596 if (err == -ERESTART_RESTARTBLOCK) {
597 restart->fn = compat_clock_nanosleep_restart;
598 restart->nanosleep.compat_rmtp = rmtp;
603 long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
604 struct compat_timespec __user *rqtp,
605 struct compat_timespec __user *rmtp)
609 struct timespec in, out;
610 struct restart_block *restart;
612 if (get_compat_timespec(&in, rqtp))
617 err = sys_clock_nanosleep(which_clock, flags,
618 (struct timespec __user *) &in,
619 (struct timespec __user *) &out);
622 if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
623 put_compat_timespec(&out, rmtp))
626 if (err == -ERESTART_RESTARTBLOCK) {
627 restart = ¤t_thread_info()->restart_block;
628 restart->fn = compat_clock_nanosleep_restart;
629 restart->nanosleep.compat_rmtp = rmtp;
635 * We currently only need the following fields from the sigevent
636 * structure: sigev_value, sigev_signo, sig_notify and (sometimes
637 * sigev_notify_thread_id). The others are handled in user mode.
638 * We also assume that copying sigev_value.sival_int is sufficient
639 * to keep all the bits of sigev_value.sival_ptr intact.
641 int get_compat_sigevent(struct sigevent *event,
642 const struct compat_sigevent __user *u_event)
644 memset(event, 0, sizeof(*event));
645 return (!access_ok(VERIFY_READ, u_event, sizeof(*u_event)) ||
646 __get_user(event->sigev_value.sival_int,
647 &u_event->sigev_value.sival_int) ||
648 __get_user(event->sigev_signo, &u_event->sigev_signo) ||
649 __get_user(event->sigev_notify, &u_event->sigev_notify) ||
650 __get_user(event->sigev_notify_thread_id,
651 &u_event->sigev_notify_thread_id))
655 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
656 unsigned long bitmap_size)
661 unsigned long nr_compat_longs;
663 /* align bitmap up to nearest compat_long_t boundary */
664 bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
666 if (!access_ok(VERIFY_READ, umask, bitmap_size / 8))
669 nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
671 for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) {
674 for (j = 0; j < sizeof(m)/sizeof(um); j++) {
676 * We dont want to read past the end of the userspace
677 * bitmap. We must however ensure the end of the
678 * kernel bitmap is zeroed.
680 if (nr_compat_longs-- > 0) {
681 if (__get_user(um, umask))
688 m |= (long)um << (j * BITS_PER_COMPAT_LONG);
696 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
697 unsigned long bitmap_size)
702 unsigned long nr_compat_longs;
704 /* align bitmap up to nearest compat_long_t boundary */
705 bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
707 if (!access_ok(VERIFY_WRITE, umask, bitmap_size / 8))
710 nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
712 for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) {
715 for (j = 0; j < sizeof(m)/sizeof(um); j++) {
719 * We dont want to write past the end of the userspace
722 if (nr_compat_longs-- > 0) {
723 if (__put_user(um, umask))
737 sigset_from_compat (sigset_t *set, compat_sigset_t *compat)
739 switch (_NSIG_WORDS) {
740 case 4: set->sig[3] = compat->sig[6] | (((long)compat->sig[7]) << 32 );
741 case 3: set->sig[2] = compat->sig[4] | (((long)compat->sig[5]) << 32 );
742 case 2: set->sig[1] = compat->sig[2] | (((long)compat->sig[3]) << 32 );
743 case 1: set->sig[0] = compat->sig[0] | (((long)compat->sig[1]) << 32 );
748 compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese,
749 struct compat_siginfo __user *uinfo,
750 struct compat_timespec __user *uts, compat_size_t sigsetsize)
757 long ret, timeout = 0;
759 if (sigsetsize != sizeof(sigset_t))
762 if (copy_from_user(&s32, uthese, sizeof(compat_sigset_t)))
764 sigset_from_compat(&s, &s32);
765 sigdelsetmask(&s,sigmask(SIGKILL)|sigmask(SIGSTOP));
769 if (get_compat_timespec (&t, uts))
771 if (t.tv_nsec >= 1000000000L || t.tv_nsec < 0
776 spin_lock_irq(¤t->sighand->siglock);
777 sig = dequeue_signal(current, &s, &info);
779 timeout = MAX_SCHEDULE_TIMEOUT;
781 timeout = timespec_to_jiffies(&t)
782 +(t.tv_sec || t.tv_nsec);
784 current->real_blocked = current->blocked;
785 sigandsets(¤t->blocked, ¤t->blocked, &s);
788 spin_unlock_irq(¤t->sighand->siglock);
790 timeout = schedule_timeout_interruptible(timeout);
792 spin_lock_irq(¤t->sighand->siglock);
793 sig = dequeue_signal(current, &s, &info);
794 current->blocked = current->real_blocked;
795 siginitset(¤t->real_blocked, 0);
799 spin_unlock_irq(¤t->sighand->siglock);
804 if (copy_siginfo_to_user32(uinfo, &info))
808 ret = timeout?-EINTR:-EAGAIN;
814 #ifdef __ARCH_WANT_COMPAT_SYS_TIME
816 /* compat_time_t is a 32 bit "long" and needs to get converted. */
818 asmlinkage long compat_sys_time(compat_time_t __user * tloc)
823 do_gettimeofday(&tv);
827 if (put_user(i,tloc))
833 asmlinkage long compat_sys_stime(compat_time_t __user *tptr)
838 if (get_user(tv.tv_sec, tptr))
843 err = security_settime(&tv, NULL);
847 do_settimeofday(&tv);
851 #endif /* __ARCH_WANT_COMPAT_SYS_TIME */
853 #ifdef __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
854 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat_size_t sigsetsize)
857 compat_sigset_t newset32;
859 /* XXX: Don't preclude handling different sized sigset_t's. */
860 if (sigsetsize != sizeof(sigset_t))
863 if (copy_from_user(&newset32, unewset, sizeof(compat_sigset_t)))
865 sigset_from_compat(&newset, &newset32);
866 sigdelsetmask(&newset, sigmask(SIGKILL)|sigmask(SIGSTOP));
868 spin_lock_irq(¤t->sighand->siglock);
869 current->saved_sigmask = current->blocked;
870 current->blocked = newset;
872 spin_unlock_irq(¤t->sighand->siglock);
874 current->state = TASK_INTERRUPTIBLE;
876 set_restore_sigmask();
877 return -ERESTARTNOHAND;
879 #endif /* __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND */
881 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp)
886 memset(&txc, 0, sizeof(struct timex));
888 if (!access_ok(VERIFY_READ, utp, sizeof(struct compat_timex)) ||
889 __get_user(txc.modes, &utp->modes) ||
890 __get_user(txc.offset, &utp->offset) ||
891 __get_user(txc.freq, &utp->freq) ||
892 __get_user(txc.maxerror, &utp->maxerror) ||
893 __get_user(txc.esterror, &utp->esterror) ||
894 __get_user(txc.status, &utp->status) ||
895 __get_user(txc.constant, &utp->constant) ||
896 __get_user(txc.precision, &utp->precision) ||
897 __get_user(txc.tolerance, &utp->tolerance) ||
898 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
899 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
900 __get_user(txc.tick, &utp->tick) ||
901 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
902 __get_user(txc.jitter, &utp->jitter) ||
903 __get_user(txc.shift, &utp->shift) ||
904 __get_user(txc.stabil, &utp->stabil) ||
905 __get_user(txc.jitcnt, &utp->jitcnt) ||
906 __get_user(txc.calcnt, &utp->calcnt) ||
907 __get_user(txc.errcnt, &utp->errcnt) ||
908 __get_user(txc.stbcnt, &utp->stbcnt))
911 ret = do_adjtimex(&txc);
913 if (!access_ok(VERIFY_WRITE, utp, sizeof(struct compat_timex)) ||
914 __put_user(txc.modes, &utp->modes) ||
915 __put_user(txc.offset, &utp->offset) ||
916 __put_user(txc.freq, &utp->freq) ||
917 __put_user(txc.maxerror, &utp->maxerror) ||
918 __put_user(txc.esterror, &utp->esterror) ||
919 __put_user(txc.status, &utp->status) ||
920 __put_user(txc.constant, &utp->constant) ||
921 __put_user(txc.precision, &utp->precision) ||
922 __put_user(txc.tolerance, &utp->tolerance) ||
923 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
924 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
925 __put_user(txc.tick, &utp->tick) ||
926 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
927 __put_user(txc.jitter, &utp->jitter) ||
928 __put_user(txc.shift, &utp->shift) ||
929 __put_user(txc.stabil, &utp->stabil) ||
930 __put_user(txc.jitcnt, &utp->jitcnt) ||
931 __put_user(txc.calcnt, &utp->calcnt) ||
932 __put_user(txc.errcnt, &utp->errcnt) ||
933 __put_user(txc.stbcnt, &utp->stbcnt) ||
934 __put_user(txc.tai, &utp->tai))
941 asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_pages,
942 compat_uptr_t __user *pages32,
943 const int __user *nodes,
947 const void __user * __user *pages;
950 pages = compat_alloc_user_space(nr_pages * sizeof(void *));
951 for (i = 0; i < nr_pages; i++) {
954 if (get_user(p, pages32 + i) ||
955 put_user(compat_ptr(p), pages + i))
958 return sys_move_pages(pid, nr_pages, pages, nodes, status, flags);
961 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
962 compat_ulong_t maxnode,
963 const compat_ulong_t __user *old_nodes,
964 const compat_ulong_t __user *new_nodes)
966 unsigned long __user *old = NULL;
967 unsigned long __user *new = NULL;
969 unsigned long nr_bits;
972 nr_bits = min_t(unsigned long, maxnode - 1, MAX_NUMNODES);
973 size = ALIGN(nr_bits, BITS_PER_LONG) / 8;
975 if (compat_get_bitmap(nodes_addr(tmp_mask), old_nodes, nr_bits))
977 old = compat_alloc_user_space(new_nodes ? size * 2 : size);
979 new = old + size / sizeof(unsigned long);
980 if (copy_to_user(old, nodes_addr(tmp_mask), size))
984 if (compat_get_bitmap(nodes_addr(tmp_mask), new_nodes, nr_bits))
987 new = compat_alloc_user_space(size);
988 if (copy_to_user(new, nodes_addr(tmp_mask), size))
991 return sys_migrate_pages(pid, nr_bits + 1, old, new);
995 struct compat_sysinfo {
1009 char _f[20-2*sizeof(u32)-sizeof(int)];
1013 compat_sys_sysinfo(struct compat_sysinfo __user *info)
1019 /* Check to see if any memory value is too large for 32-bit and scale
1022 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
1025 while (s.mem_unit < PAGE_SIZE) {
1030 s.totalram >>= bitcount;
1031 s.freeram >>= bitcount;
1032 s.sharedram >>= bitcount;
1033 s.bufferram >>= bitcount;
1034 s.totalswap >>= bitcount;
1035 s.freeswap >>= bitcount;
1036 s.totalhigh >>= bitcount;
1037 s.freehigh >>= bitcount;
1040 if (!access_ok(VERIFY_WRITE, info, sizeof(struct compat_sysinfo)) ||
1041 __put_user (s.uptime, &info->uptime) ||
1042 __put_user (s.loads[0], &info->loads[0]) ||
1043 __put_user (s.loads[1], &info->loads[1]) ||
1044 __put_user (s.loads[2], &info->loads[2]) ||
1045 __put_user (s.totalram, &info->totalram) ||
1046 __put_user (s.freeram, &info->freeram) ||
1047 __put_user (s.sharedram, &info->sharedram) ||
1048 __put_user (s.bufferram, &info->bufferram) ||
1049 __put_user (s.totalswap, &info->totalswap) ||
1050 __put_user (s.freeswap, &info->freeswap) ||
1051 __put_user (s.procs, &info->procs) ||
1052 __put_user (s.totalhigh, &info->totalhigh) ||
1053 __put_user (s.freehigh, &info->freehigh) ||
1054 __put_user (s.mem_unit, &info->mem_unit))