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>
27 #include <asm/uaccess.h>
29 int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts)
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;
36 int put_compat_timespec(const struct timespec *ts, struct compat_timespec __user *cts)
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;
43 static long compat_nanosleep_restart(struct restart_block *restart)
45 unsigned long expire = restart->arg0, now = jiffies;
46 struct compat_timespec __user *rmtp;
48 /* Did it expire while we handled signals? */
49 if (!time_after(expire, now))
52 expire = schedule_timeout_interruptible(expire - now);
56 rmtp = (struct compat_timespec __user *)restart->arg1;
58 struct compat_timespec ct;
61 jiffies_to_timespec(expire, &t);
63 ct.tv_nsec = t.tv_nsec;
64 if (copy_to_user(rmtp, &ct, sizeof(ct)))
67 /* The 'restart' block is already filled in */
68 return -ERESTART_RESTARTBLOCK;
71 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
72 struct compat_timespec __user *rmtp)
75 struct restart_block *restart;
78 if (get_compat_timespec(&t, rqtp))
81 if ((t.tv_nsec >= 1000000000L) || (t.tv_nsec < 0) || (t.tv_sec < 0))
84 expire = timespec_to_jiffies(&t) + (t.tv_sec || t.tv_nsec);
85 expire = schedule_timeout_interruptible(expire);
90 jiffies_to_timespec(expire, &t);
91 if (put_compat_timespec(&t, rmtp))
94 restart = ¤t_thread_info()->restart_block;
95 restart->fn = compat_nanosleep_restart;
96 restart->arg0 = jiffies + expire;
97 restart->arg1 = (unsigned long) rmtp;
98 return -ERESTART_RESTARTBLOCK;
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 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf)
157 * In the SMP world we might just be unlucky and have one of
158 * the times increment as we use it. Since the value is an
159 * atomically safe type this is just fine. Conceptually its
160 * as if the syscall took an instant longer to occur.
163 struct compat_tms tmp;
164 struct task_struct *tsk = current;
165 struct task_struct *t;
166 cputime_t utime, stime, cutime, cstime;
168 read_lock(&tasklist_lock);
169 utime = tsk->signal->utime;
170 stime = tsk->signal->stime;
173 utime = cputime_add(utime, t->utime);
174 stime = cputime_add(stime, t->stime);
179 * While we have tasklist_lock read-locked, no dying thread
180 * can be updating current->signal->[us]time. Instead,
181 * we got their counts included in the live thread loop.
182 * However, another thread can come in right now and
183 * do a wait call that updates current->signal->c[us]time.
184 * To make sure we always see that pair updated atomically,
185 * we take the siglock around fetching them.
187 spin_lock_irq(&tsk->sighand->siglock);
188 cutime = tsk->signal->cutime;
189 cstime = tsk->signal->cstime;
190 spin_unlock_irq(&tsk->sighand->siglock);
191 read_unlock(&tasklist_lock);
193 tmp.tms_utime = compat_jiffies_to_clock_t(cputime_to_jiffies(utime));
194 tmp.tms_stime = compat_jiffies_to_clock_t(cputime_to_jiffies(stime));
195 tmp.tms_cutime = compat_jiffies_to_clock_t(cputime_to_jiffies(cutime));
196 tmp.tms_cstime = compat_jiffies_to_clock_t(cputime_to_jiffies(cstime));
197 if (copy_to_user(tbuf, &tmp, sizeof(tmp)))
200 return compat_jiffies_to_clock_t(jiffies);
204 * Assumption: old_sigset_t and compat_old_sigset_t are both
205 * types that can be passed to put_user()/get_user().
208 asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set)
212 mm_segment_t old_fs = get_fs();
215 ret = sys_sigpending((old_sigset_t __user *) &s);
218 ret = put_user(s, set);
222 asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set,
223 compat_old_sigset_t __user *oset)
229 if (set && get_user(s, set))
233 ret = sys_sigprocmask(how,
234 set ? (old_sigset_t __user *) &s : NULL,
235 oset ? (old_sigset_t __user *) &s : NULL);
239 ret = put_user(s, oset);
243 asmlinkage long compat_sys_setrlimit(unsigned int resource,
244 struct compat_rlimit __user *rlim)
248 mm_segment_t old_fs = get_fs ();
250 if (resource >= RLIM_NLIMITS)
253 if (!access_ok(VERIFY_READ, rlim, sizeof(*rlim)) ||
254 __get_user(r.rlim_cur, &rlim->rlim_cur) ||
255 __get_user(r.rlim_max, &rlim->rlim_max))
258 if (r.rlim_cur == COMPAT_RLIM_INFINITY)
259 r.rlim_cur = RLIM_INFINITY;
260 if (r.rlim_max == COMPAT_RLIM_INFINITY)
261 r.rlim_max = RLIM_INFINITY;
263 ret = sys_setrlimit(resource, (struct rlimit __user *) &r);
268 #ifdef COMPAT_RLIM_OLD_INFINITY
270 asmlinkage long compat_sys_old_getrlimit(unsigned int resource,
271 struct compat_rlimit __user *rlim)
275 mm_segment_t old_fs = get_fs();
278 ret = sys_old_getrlimit(resource, &r);
282 if (r.rlim_cur > COMPAT_RLIM_OLD_INFINITY)
283 r.rlim_cur = COMPAT_RLIM_INFINITY;
284 if (r.rlim_max > COMPAT_RLIM_OLD_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))
297 asmlinkage long compat_sys_getrlimit (unsigned int resource,
298 struct compat_rlimit __user *rlim)
302 mm_segment_t old_fs = get_fs();
305 ret = sys_getrlimit(resource, (struct rlimit __user *) &r);
308 if (r.rlim_cur > COMPAT_RLIM_INFINITY)
309 r.rlim_cur = COMPAT_RLIM_INFINITY;
310 if (r.rlim_max > COMPAT_RLIM_INFINITY)
311 r.rlim_max = COMPAT_RLIM_INFINITY;
313 if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) ||
314 __put_user(r.rlim_cur, &rlim->rlim_cur) ||
315 __put_user(r.rlim_max, &rlim->rlim_max))
321 int put_compat_rusage(const struct rusage *r, struct compat_rusage __user *ru)
323 if (!access_ok(VERIFY_WRITE, ru, sizeof(*ru)) ||
324 __put_user(r->ru_utime.tv_sec, &ru->ru_utime.tv_sec) ||
325 __put_user(r->ru_utime.tv_usec, &ru->ru_utime.tv_usec) ||
326 __put_user(r->ru_stime.tv_sec, &ru->ru_stime.tv_sec) ||
327 __put_user(r->ru_stime.tv_usec, &ru->ru_stime.tv_usec) ||
328 __put_user(r->ru_maxrss, &ru->ru_maxrss) ||
329 __put_user(r->ru_ixrss, &ru->ru_ixrss) ||
330 __put_user(r->ru_idrss, &ru->ru_idrss) ||
331 __put_user(r->ru_isrss, &ru->ru_isrss) ||
332 __put_user(r->ru_minflt, &ru->ru_minflt) ||
333 __put_user(r->ru_majflt, &ru->ru_majflt) ||
334 __put_user(r->ru_nswap, &ru->ru_nswap) ||
335 __put_user(r->ru_inblock, &ru->ru_inblock) ||
336 __put_user(r->ru_oublock, &ru->ru_oublock) ||
337 __put_user(r->ru_msgsnd, &ru->ru_msgsnd) ||
338 __put_user(r->ru_msgrcv, &ru->ru_msgrcv) ||
339 __put_user(r->ru_nsignals, &ru->ru_nsignals) ||
340 __put_user(r->ru_nvcsw, &ru->ru_nvcsw) ||
341 __put_user(r->ru_nivcsw, &ru->ru_nivcsw))
346 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru)
350 mm_segment_t old_fs = get_fs();
353 ret = sys_getrusage(who, (struct rusage __user *) &r);
359 if (put_compat_rusage(&r, ru))
366 compat_sys_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options,
367 struct compat_rusage __user *ru)
370 return sys_wait4(pid, stat_addr, options, NULL);
375 mm_segment_t old_fs = get_fs();
380 (unsigned int __user *) &status : NULL),
381 options, (struct rusage __user *) &r);
385 if (put_compat_rusage(&r, ru))
387 if (stat_addr && put_user(status, stat_addr))
394 asmlinkage long compat_sys_waitid(int which, compat_pid_t pid,
395 struct compat_siginfo __user *uinfo, int options,
396 struct compat_rusage __user *uru)
401 mm_segment_t old_fs = get_fs();
403 memset(&info, 0, sizeof(info));
406 ret = sys_waitid(which, pid, (siginfo_t __user *)&info, options,
407 uru ? (struct rusage __user *)&ru : NULL);
410 if ((ret < 0) || (info.si_signo == 0))
414 ret = put_compat_rusage(&ru, uru);
419 BUG_ON(info.si_code & __SI_MASK);
420 info.si_code |= __SI_CHLD;
421 return copy_siginfo_to_user32(uinfo, &info);
424 static int compat_get_user_cpu_mask(compat_ulong_t __user *user_mask_ptr,
425 unsigned len, cpumask_t *new_mask)
429 if (len < sizeof(cpumask_t))
430 memset(new_mask, 0, sizeof(cpumask_t));
431 else if (len > sizeof(cpumask_t))
432 len = sizeof(cpumask_t);
434 k = cpus_addr(*new_mask);
435 return compat_get_bitmap(k, user_mask_ptr, len * 8);
438 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
440 compat_ulong_t __user *user_mask_ptr)
445 retval = compat_get_user_cpu_mask(user_mask_ptr, len, &new_mask);
449 return sched_setaffinity(pid, new_mask);
452 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, unsigned int len,
453 compat_ulong_t __user *user_mask_ptr)
458 unsigned int min_length = sizeof(cpumask_t);
460 if (NR_CPUS <= BITS_PER_COMPAT_LONG)
461 min_length = sizeof(compat_ulong_t);
463 if (len < min_length)
466 ret = sched_getaffinity(pid, &mask);
471 ret = compat_put_bitmap(user_mask_ptr, k, min_length * 8);
478 static int get_compat_itimerspec(struct itimerspec *dst,
479 struct compat_itimerspec __user *src)
481 if (get_compat_timespec(&dst->it_interval, &src->it_interval) ||
482 get_compat_timespec(&dst->it_value, &src->it_value))
487 static int put_compat_itimerspec(struct compat_itimerspec __user *dst,
488 struct itimerspec *src)
490 if (put_compat_timespec(&src->it_interval, &dst->it_interval) ||
491 put_compat_timespec(&src->it_value, &dst->it_value))
496 long compat_sys_timer_create(clockid_t which_clock,
497 struct compat_sigevent __user *timer_event_spec,
498 timer_t __user *created_timer_id)
500 struct sigevent __user *event = NULL;
502 if (timer_event_spec) {
503 struct sigevent kevent;
505 event = compat_alloc_user_space(sizeof(*event));
506 if (get_compat_sigevent(&kevent, timer_event_spec) ||
507 copy_to_user(event, &kevent, sizeof(*event)))
511 return sys_timer_create(which_clock, event, created_timer_id);
514 long compat_sys_timer_settime(timer_t timer_id, int flags,
515 struct compat_itimerspec __user *new,
516 struct compat_itimerspec __user *old)
520 struct itimerspec newts, oldts;
524 if (get_compat_itimerspec(&newts, new))
528 err = sys_timer_settime(timer_id, flags,
529 (struct itimerspec __user *) &newts,
530 (struct itimerspec __user *) &oldts);
532 if (!err && old && put_compat_itimerspec(old, &oldts))
537 long compat_sys_timer_gettime(timer_t timer_id,
538 struct compat_itimerspec __user *setting)
542 struct itimerspec ts;
546 err = sys_timer_gettime(timer_id,
547 (struct itimerspec __user *) &ts);
549 if (!err && put_compat_itimerspec(setting, &ts))
554 long compat_sys_clock_settime(clockid_t which_clock,
555 struct compat_timespec __user *tp)
561 if (get_compat_timespec(&ts, tp))
565 err = sys_clock_settime(which_clock,
566 (struct timespec __user *) &ts);
571 long compat_sys_clock_gettime(clockid_t which_clock,
572 struct compat_timespec __user *tp)
580 err = sys_clock_gettime(which_clock,
581 (struct timespec __user *) &ts);
583 if (!err && put_compat_timespec(&ts, tp))
588 long compat_sys_clock_getres(clockid_t which_clock,
589 struct compat_timespec __user *tp)
597 err = sys_clock_getres(which_clock,
598 (struct timespec __user *) &ts);
600 if (!err && tp && put_compat_timespec(&ts, tp))
605 static long compat_clock_nanosleep_restart(struct restart_block *restart)
610 struct compat_timespec *rmtp = (struct compat_timespec *)(restart->arg1);
612 restart->arg1 = (unsigned long) &tu;
615 err = clock_nanosleep_restart(restart);
618 if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
619 put_compat_timespec(&tu, rmtp))
622 if (err == -ERESTART_RESTARTBLOCK) {
623 restart->fn = compat_clock_nanosleep_restart;
624 restart->arg1 = (unsigned long) rmtp;
629 long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
630 struct compat_timespec __user *rqtp,
631 struct compat_timespec __user *rmtp)
635 struct timespec in, out;
636 struct restart_block *restart;
638 if (get_compat_timespec(&in, rqtp))
643 err = sys_clock_nanosleep(which_clock, flags,
644 (struct timespec __user *) &in,
645 (struct timespec __user *) &out);
648 if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
649 put_compat_timespec(&out, rmtp))
652 if (err == -ERESTART_RESTARTBLOCK) {
653 restart = ¤t_thread_info()->restart_block;
654 restart->fn = compat_clock_nanosleep_restart;
655 restart->arg1 = (unsigned long) rmtp;
661 * We currently only need the following fields from the sigevent
662 * structure: sigev_value, sigev_signo, sig_notify and (sometimes
663 * sigev_notify_thread_id). The others are handled in user mode.
664 * We also assume that copying sigev_value.sival_int is sufficient
665 * to keep all the bits of sigev_value.sival_ptr intact.
667 int get_compat_sigevent(struct sigevent *event,
668 const struct compat_sigevent __user *u_event)
670 memset(event, 0, sizeof(*event));
671 return (!access_ok(VERIFY_READ, u_event, sizeof(*u_event)) ||
672 __get_user(event->sigev_value.sival_int,
673 &u_event->sigev_value.sival_int) ||
674 __get_user(event->sigev_signo, &u_event->sigev_signo) ||
675 __get_user(event->sigev_notify, &u_event->sigev_notify) ||
676 __get_user(event->sigev_notify_thread_id,
677 &u_event->sigev_notify_thread_id))
681 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
682 unsigned long bitmap_size)
687 unsigned long nr_compat_longs;
689 /* align bitmap up to nearest compat_long_t boundary */
690 bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
692 if (!access_ok(VERIFY_READ, umask, bitmap_size / 8))
695 nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
697 for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) {
700 for (j = 0; j < sizeof(m)/sizeof(um); j++) {
702 * We dont want to read past the end of the userspace
703 * bitmap. We must however ensure the end of the
704 * kernel bitmap is zeroed.
706 if (nr_compat_longs-- > 0) {
707 if (__get_user(um, umask))
714 m |= (long)um << (j * BITS_PER_COMPAT_LONG);
722 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
723 unsigned long bitmap_size)
728 unsigned long nr_compat_longs;
730 /* align bitmap up to nearest compat_long_t boundary */
731 bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
733 if (!access_ok(VERIFY_WRITE, umask, bitmap_size / 8))
736 nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
738 for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) {
741 for (j = 0; j < sizeof(m)/sizeof(um); j++) {
745 * We dont want to write past the end of the userspace
748 if (nr_compat_longs-- > 0) {
749 if (__put_user(um, umask))
763 sigset_from_compat (sigset_t *set, compat_sigset_t *compat)
765 switch (_NSIG_WORDS) {
766 case 4: set->sig[3] = compat->sig[6] | (((long)compat->sig[7]) << 32 );
767 case 3: set->sig[2] = compat->sig[4] | (((long)compat->sig[5]) << 32 );
768 case 2: set->sig[1] = compat->sig[2] | (((long)compat->sig[3]) << 32 );
769 case 1: set->sig[0] = compat->sig[0] | (((long)compat->sig[1]) << 32 );
774 compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese,
775 struct compat_siginfo __user *uinfo,
776 struct compat_timespec __user *uts, compat_size_t sigsetsize)
783 long ret, timeout = 0;
785 if (sigsetsize != sizeof(sigset_t))
788 if (copy_from_user(&s32, uthese, sizeof(compat_sigset_t)))
790 sigset_from_compat(&s, &s32);
791 sigdelsetmask(&s,sigmask(SIGKILL)|sigmask(SIGSTOP));
795 if (get_compat_timespec (&t, uts))
797 if (t.tv_nsec >= 1000000000L || t.tv_nsec < 0
802 spin_lock_irq(¤t->sighand->siglock);
803 sig = dequeue_signal(current, &s, &info);
805 timeout = MAX_SCHEDULE_TIMEOUT;
807 timeout = timespec_to_jiffies(&t)
808 +(t.tv_sec || t.tv_nsec);
810 current->real_blocked = current->blocked;
811 sigandsets(¤t->blocked, ¤t->blocked, &s);
814 spin_unlock_irq(¤t->sighand->siglock);
816 timeout = schedule_timeout_interruptible(timeout);
818 spin_lock_irq(¤t->sighand->siglock);
819 sig = dequeue_signal(current, &s, &info);
820 current->blocked = current->real_blocked;
821 siginitset(¤t->real_blocked, 0);
825 spin_unlock_irq(¤t->sighand->siglock);
830 if (copy_siginfo_to_user32(uinfo, &info))
834 ret = timeout?-EINTR:-EAGAIN;
840 #ifdef __ARCH_WANT_COMPAT_SYS_TIME
842 /* compat_time_t is a 32 bit "long" and needs to get converted. */
844 asmlinkage long compat_sys_time(compat_time_t __user * tloc)
849 do_gettimeofday(&tv);
853 if (put_user(i,tloc))
859 asmlinkage long compat_sys_stime(compat_time_t __user *tptr)
864 if (get_user(tv.tv_sec, tptr))
869 err = security_settime(&tv, NULL);
873 do_settimeofday(&tv);
877 #endif /* __ARCH_WANT_COMPAT_SYS_TIME */
879 #ifdef __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
880 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat_size_t sigsetsize)
883 compat_sigset_t newset32;
885 /* XXX: Don't preclude handling different sized sigset_t's. */
886 if (sigsetsize != sizeof(sigset_t))
889 if (copy_from_user(&newset32, unewset, sizeof(compat_sigset_t)))
891 sigset_from_compat(&newset, &newset32);
892 sigdelsetmask(&newset, sigmask(SIGKILL)|sigmask(SIGSTOP));
894 spin_lock_irq(¤t->sighand->siglock);
895 current->saved_sigmask = current->blocked;
896 current->blocked = newset;
898 spin_unlock_irq(¤t->sighand->siglock);
900 current->state = TASK_INTERRUPTIBLE;
902 set_thread_flag(TIF_RESTORE_SIGMASK);
903 return -ERESTARTNOHAND;
905 #endif /* __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND */
907 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp)
912 memset(&txc, 0, sizeof(struct timex));
914 if (!access_ok(VERIFY_READ, utp, sizeof(struct compat_timex)) ||
915 __get_user(txc.modes, &utp->modes) ||
916 __get_user(txc.offset, &utp->offset) ||
917 __get_user(txc.freq, &utp->freq) ||
918 __get_user(txc.maxerror, &utp->maxerror) ||
919 __get_user(txc.esterror, &utp->esterror) ||
920 __get_user(txc.status, &utp->status) ||
921 __get_user(txc.constant, &utp->constant) ||
922 __get_user(txc.precision, &utp->precision) ||
923 __get_user(txc.tolerance, &utp->tolerance) ||
924 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
925 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
926 __get_user(txc.tick, &utp->tick) ||
927 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
928 __get_user(txc.jitter, &utp->jitter) ||
929 __get_user(txc.shift, &utp->shift) ||
930 __get_user(txc.stabil, &utp->stabil) ||
931 __get_user(txc.jitcnt, &utp->jitcnt) ||
932 __get_user(txc.calcnt, &utp->calcnt) ||
933 __get_user(txc.errcnt, &utp->errcnt) ||
934 __get_user(txc.stbcnt, &utp->stbcnt))
937 ret = do_adjtimex(&txc);
939 if (!access_ok(VERIFY_WRITE, utp, sizeof(struct compat_timex)) ||
940 __put_user(txc.modes, &utp->modes) ||
941 __put_user(txc.offset, &utp->offset) ||
942 __put_user(txc.freq, &utp->freq) ||
943 __put_user(txc.maxerror, &utp->maxerror) ||
944 __put_user(txc.esterror, &utp->esterror) ||
945 __put_user(txc.status, &utp->status) ||
946 __put_user(txc.constant, &utp->constant) ||
947 __put_user(txc.precision, &utp->precision) ||
948 __put_user(txc.tolerance, &utp->tolerance) ||
949 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
950 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
951 __put_user(txc.tick, &utp->tick) ||
952 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
953 __put_user(txc.jitter, &utp->jitter) ||
954 __put_user(txc.shift, &utp->shift) ||
955 __put_user(txc.stabil, &utp->stabil) ||
956 __put_user(txc.jitcnt, &utp->jitcnt) ||
957 __put_user(txc.calcnt, &utp->calcnt) ||
958 __put_user(txc.errcnt, &utp->errcnt) ||
959 __put_user(txc.stbcnt, &utp->stbcnt))
966 asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_pages,
967 compat_uptr_t __user *pages32,
968 const int __user *nodes,
972 const void __user * __user *pages;
975 pages = compat_alloc_user_space(nr_pages * sizeof(void *));
976 for (i = 0; i < nr_pages; i++) {
979 if (get_user(p, pages32 + i) ||
980 put_user(compat_ptr(p), pages + i))
983 return sys_move_pages(pid, nr_pages, pages, nodes, status, flags);
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)
991 unsigned long __user *old = NULL;
992 unsigned long __user *new = NULL;
994 unsigned long nr_bits;
997 nr_bits = min_t(unsigned long, maxnode - 1, MAX_NUMNODES);
998 size = ALIGN(nr_bits, BITS_PER_LONG) / 8;
1000 if (compat_get_bitmap(nodes_addr(tmp_mask), old_nodes, nr_bits))
1002 old = compat_alloc_user_space(new_nodes ? size * 2 : size);
1004 new = old + size / sizeof(unsigned long);
1005 if (copy_to_user(old, nodes_addr(tmp_mask), size))
1009 if (compat_get_bitmap(nodes_addr(tmp_mask), new_nodes, nr_bits))
1012 new = compat_alloc_user_space(size);
1013 if (copy_to_user(new, nodes_addr(tmp_mask), size))
1016 return sys_migrate_pages(pid, nr_bits + 1, old, new);