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 struct compat_timespec __user *rmtp;
50 rmtp = (struct compat_timespec __user *)(restart->arg1);
51 restart->arg1 = (unsigned long)&rmt;
54 ret = hrtimer_nanosleep_restart(restart);
58 restart->fn = compat_nanosleep_restart;
59 restart->arg1 = (unsigned long)rmtp;
61 if (rmtp && put_compat_timespec(&rmt, rmtp))
68 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp,
69 struct compat_timespec __user *rmtp)
71 struct timespec tu, rmt;
75 if (get_compat_timespec(&tu, rqtp))
78 if (!timespec_valid(&tu))
83 ret = hrtimer_nanosleep(&tu,
84 rmtp ? (struct timespec __user *)&rmt : NULL,
85 HRTIMER_MODE_REL, CLOCK_MONOTONIC);
89 struct restart_block *restart
90 = ¤t_thread_info()->restart_block;
92 restart->fn = compat_nanosleep_restart;
93 restart->arg1 = (unsigned long)rmtp;
95 if (rmtp && put_compat_timespec(&rmt, rmtp))
102 static inline long get_compat_itimerval(struct itimerval *o,
103 struct compat_itimerval __user *i)
105 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
106 (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) |
107 __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) |
108 __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) |
109 __get_user(o->it_value.tv_usec, &i->it_value.tv_usec)));
112 static inline long put_compat_itimerval(struct compat_itimerval __user *o,
115 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
116 (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) |
117 __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) |
118 __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) |
119 __put_user(i->it_value.tv_usec, &o->it_value.tv_usec)));
122 asmlinkage long compat_sys_getitimer(int which,
123 struct compat_itimerval __user *it)
125 struct itimerval kit;
128 error = do_getitimer(which, &kit);
129 if (!error && put_compat_itimerval(it, &kit))
134 asmlinkage long compat_sys_setitimer(int which,
135 struct compat_itimerval __user *in,
136 struct compat_itimerval __user *out)
138 struct itimerval kin, kout;
142 if (get_compat_itimerval(&kin, in))
145 memset(&kin, 0, sizeof(kin));
147 error = do_setitimer(which, &kin, out ? &kout : NULL);
150 if (put_compat_itimerval(out, &kout))
155 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf)
158 * In the SMP world we might just be unlucky and have one of
159 * the times increment as we use it. Since the value is an
160 * atomically safe type this is just fine. Conceptually its
161 * as if the syscall took an instant longer to occur.
164 struct compat_tms tmp;
165 struct task_struct *tsk = current;
166 struct task_struct *t;
167 cputime_t utime, stime, cutime, cstime;
169 read_lock(&tasklist_lock);
170 utime = tsk->signal->utime;
171 stime = tsk->signal->stime;
174 utime = cputime_add(utime, t->utime);
175 stime = cputime_add(stime, t->stime);
180 * While we have tasklist_lock read-locked, no dying thread
181 * can be updating current->signal->[us]time. Instead,
182 * we got their counts included in the live thread loop.
183 * However, another thread can come in right now and
184 * do a wait call that updates current->signal->c[us]time.
185 * To make sure we always see that pair updated atomically,
186 * we take the siglock around fetching them.
188 spin_lock_irq(&tsk->sighand->siglock);
189 cutime = tsk->signal->cutime;
190 cstime = tsk->signal->cstime;
191 spin_unlock_irq(&tsk->sighand->siglock);
192 read_unlock(&tasklist_lock);
194 tmp.tms_utime = compat_jiffies_to_clock_t(cputime_to_jiffies(utime));
195 tmp.tms_stime = compat_jiffies_to_clock_t(cputime_to_jiffies(stime));
196 tmp.tms_cutime = compat_jiffies_to_clock_t(cputime_to_jiffies(cutime));
197 tmp.tms_cstime = compat_jiffies_to_clock_t(cputime_to_jiffies(cstime));
198 if (copy_to_user(tbuf, &tmp, sizeof(tmp)))
201 return compat_jiffies_to_clock_t(jiffies);
205 * Assumption: old_sigset_t and compat_old_sigset_t are both
206 * types that can be passed to put_user()/get_user().
209 asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set)
213 mm_segment_t old_fs = get_fs();
216 ret = sys_sigpending((old_sigset_t __user *) &s);
219 ret = put_user(s, set);
223 asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set,
224 compat_old_sigset_t __user *oset)
230 if (set && get_user(s, set))
234 ret = sys_sigprocmask(how,
235 set ? (old_sigset_t __user *) &s : NULL,
236 oset ? (old_sigset_t __user *) &s : NULL);
240 ret = put_user(s, oset);
244 asmlinkage long compat_sys_setrlimit(unsigned int resource,
245 struct compat_rlimit __user *rlim)
249 mm_segment_t old_fs = get_fs ();
251 if (resource >= RLIM_NLIMITS)
254 if (!access_ok(VERIFY_READ, rlim, sizeof(*rlim)) ||
255 __get_user(r.rlim_cur, &rlim->rlim_cur) ||
256 __get_user(r.rlim_max, &rlim->rlim_max))
259 if (r.rlim_cur == COMPAT_RLIM_INFINITY)
260 r.rlim_cur = RLIM_INFINITY;
261 if (r.rlim_max == COMPAT_RLIM_INFINITY)
262 r.rlim_max = RLIM_INFINITY;
264 ret = sys_setrlimit(resource, (struct rlimit __user *) &r);
269 #ifdef COMPAT_RLIM_OLD_INFINITY
271 asmlinkage long compat_sys_old_getrlimit(unsigned int resource,
272 struct compat_rlimit __user *rlim)
276 mm_segment_t old_fs = get_fs();
279 ret = sys_old_getrlimit(resource, &r);
283 if (r.rlim_cur > COMPAT_RLIM_OLD_INFINITY)
284 r.rlim_cur = COMPAT_RLIM_INFINITY;
285 if (r.rlim_max > COMPAT_RLIM_OLD_INFINITY)
286 r.rlim_max = COMPAT_RLIM_INFINITY;
288 if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) ||
289 __put_user(r.rlim_cur, &rlim->rlim_cur) ||
290 __put_user(r.rlim_max, &rlim->rlim_max))
298 asmlinkage long compat_sys_getrlimit (unsigned int resource,
299 struct compat_rlimit __user *rlim)
303 mm_segment_t old_fs = get_fs();
306 ret = sys_getrlimit(resource, (struct rlimit __user *) &r);
309 if (r.rlim_cur > COMPAT_RLIM_INFINITY)
310 r.rlim_cur = COMPAT_RLIM_INFINITY;
311 if (r.rlim_max > COMPAT_RLIM_INFINITY)
312 r.rlim_max = COMPAT_RLIM_INFINITY;
314 if (!access_ok(VERIFY_WRITE, rlim, sizeof(*rlim)) ||
315 __put_user(r.rlim_cur, &rlim->rlim_cur) ||
316 __put_user(r.rlim_max, &rlim->rlim_max))
322 int put_compat_rusage(const struct rusage *r, struct compat_rusage __user *ru)
324 if (!access_ok(VERIFY_WRITE, ru, sizeof(*ru)) ||
325 __put_user(r->ru_utime.tv_sec, &ru->ru_utime.tv_sec) ||
326 __put_user(r->ru_utime.tv_usec, &ru->ru_utime.tv_usec) ||
327 __put_user(r->ru_stime.tv_sec, &ru->ru_stime.tv_sec) ||
328 __put_user(r->ru_stime.tv_usec, &ru->ru_stime.tv_usec) ||
329 __put_user(r->ru_maxrss, &ru->ru_maxrss) ||
330 __put_user(r->ru_ixrss, &ru->ru_ixrss) ||
331 __put_user(r->ru_idrss, &ru->ru_idrss) ||
332 __put_user(r->ru_isrss, &ru->ru_isrss) ||
333 __put_user(r->ru_minflt, &ru->ru_minflt) ||
334 __put_user(r->ru_majflt, &ru->ru_majflt) ||
335 __put_user(r->ru_nswap, &ru->ru_nswap) ||
336 __put_user(r->ru_inblock, &ru->ru_inblock) ||
337 __put_user(r->ru_oublock, &ru->ru_oublock) ||
338 __put_user(r->ru_msgsnd, &ru->ru_msgsnd) ||
339 __put_user(r->ru_msgrcv, &ru->ru_msgrcv) ||
340 __put_user(r->ru_nsignals, &ru->ru_nsignals) ||
341 __put_user(r->ru_nvcsw, &ru->ru_nvcsw) ||
342 __put_user(r->ru_nivcsw, &ru->ru_nivcsw))
347 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru)
351 mm_segment_t old_fs = get_fs();
354 ret = sys_getrusage(who, (struct rusage __user *) &r);
360 if (put_compat_rusage(&r, ru))
367 compat_sys_wait4(compat_pid_t pid, compat_uint_t __user *stat_addr, int options,
368 struct compat_rusage __user *ru)
371 return sys_wait4(pid, stat_addr, options, NULL);
376 mm_segment_t old_fs = get_fs();
381 (unsigned int __user *) &status : NULL),
382 options, (struct rusage __user *) &r);
386 if (put_compat_rusage(&r, ru))
388 if (stat_addr && put_user(status, stat_addr))
395 asmlinkage long compat_sys_waitid(int which, compat_pid_t pid,
396 struct compat_siginfo __user *uinfo, int options,
397 struct compat_rusage __user *uru)
402 mm_segment_t old_fs = get_fs();
404 memset(&info, 0, sizeof(info));
407 ret = sys_waitid(which, pid, (siginfo_t __user *)&info, options,
408 uru ? (struct rusage __user *)&ru : NULL);
411 if ((ret < 0) || (info.si_signo == 0))
415 ret = put_compat_rusage(&ru, uru);
420 BUG_ON(info.si_code & __SI_MASK);
421 info.si_code |= __SI_CHLD;
422 return copy_siginfo_to_user32(uinfo, &info);
425 static int compat_get_user_cpu_mask(compat_ulong_t __user *user_mask_ptr,
426 unsigned len, cpumask_t *new_mask)
430 if (len < sizeof(cpumask_t))
431 memset(new_mask, 0, sizeof(cpumask_t));
432 else if (len > sizeof(cpumask_t))
433 len = sizeof(cpumask_t);
435 k = cpus_addr(*new_mask);
436 return compat_get_bitmap(k, user_mask_ptr, len * 8);
439 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid,
441 compat_ulong_t __user *user_mask_ptr)
446 retval = compat_get_user_cpu_mask(user_mask_ptr, len, &new_mask);
450 return sched_setaffinity(pid, new_mask);
453 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, unsigned int len,
454 compat_ulong_t __user *user_mask_ptr)
459 unsigned int min_length = sizeof(cpumask_t);
461 if (NR_CPUS <= BITS_PER_COMPAT_LONG)
462 min_length = sizeof(compat_ulong_t);
464 if (len < min_length)
467 ret = sched_getaffinity(pid, &mask);
472 ret = compat_put_bitmap(user_mask_ptr, k, min_length * 8);
479 int get_compat_itimerspec(struct itimerspec *dst,
480 const struct compat_itimerspec __user *src)
482 if (get_compat_timespec(&dst->it_interval, &src->it_interval) ||
483 get_compat_timespec(&dst->it_value, &src->it_value))
488 int put_compat_itimerspec(struct compat_itimerspec __user *dst,
489 const struct itimerspec *src)
491 if (put_compat_timespec(&src->it_interval, &dst->it_interval) ||
492 put_compat_timespec(&src->it_value, &dst->it_value))
497 long compat_sys_timer_create(clockid_t which_clock,
498 struct compat_sigevent __user *timer_event_spec,
499 timer_t __user *created_timer_id)
501 struct sigevent __user *event = NULL;
503 if (timer_event_spec) {
504 struct sigevent kevent;
506 event = compat_alloc_user_space(sizeof(*event));
507 if (get_compat_sigevent(&kevent, timer_event_spec) ||
508 copy_to_user(event, &kevent, sizeof(*event)))
512 return sys_timer_create(which_clock, event, created_timer_id);
515 long compat_sys_timer_settime(timer_t timer_id, int flags,
516 struct compat_itimerspec __user *new,
517 struct compat_itimerspec __user *old)
521 struct itimerspec newts, oldts;
525 if (get_compat_itimerspec(&newts, new))
529 err = sys_timer_settime(timer_id, flags,
530 (struct itimerspec __user *) &newts,
531 (struct itimerspec __user *) &oldts);
533 if (!err && old && put_compat_itimerspec(old, &oldts))
538 long compat_sys_timer_gettime(timer_t timer_id,
539 struct compat_itimerspec __user *setting)
543 struct itimerspec ts;
547 err = sys_timer_gettime(timer_id,
548 (struct itimerspec __user *) &ts);
550 if (!err && put_compat_itimerspec(setting, &ts))
555 long compat_sys_clock_settime(clockid_t which_clock,
556 struct compat_timespec __user *tp)
562 if (get_compat_timespec(&ts, tp))
566 err = sys_clock_settime(which_clock,
567 (struct timespec __user *) &ts);
572 long compat_sys_clock_gettime(clockid_t which_clock,
573 struct compat_timespec __user *tp)
581 err = sys_clock_gettime(which_clock,
582 (struct timespec __user *) &ts);
584 if (!err && put_compat_timespec(&ts, tp))
589 long compat_sys_clock_getres(clockid_t which_clock,
590 struct compat_timespec __user *tp)
598 err = sys_clock_getres(which_clock,
599 (struct timespec __user *) &ts);
601 if (!err && tp && put_compat_timespec(&ts, tp))
606 static long compat_clock_nanosleep_restart(struct restart_block *restart)
611 struct compat_timespec *rmtp = (struct compat_timespec *)(restart->arg1);
613 restart->arg1 = (unsigned long) &tu;
616 err = clock_nanosleep_restart(restart);
619 if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
620 put_compat_timespec(&tu, rmtp))
623 if (err == -ERESTART_RESTARTBLOCK) {
624 restart->fn = compat_clock_nanosleep_restart;
625 restart->arg1 = (unsigned long) rmtp;
630 long compat_sys_clock_nanosleep(clockid_t which_clock, int flags,
631 struct compat_timespec __user *rqtp,
632 struct compat_timespec __user *rmtp)
636 struct timespec in, out;
637 struct restart_block *restart;
639 if (get_compat_timespec(&in, rqtp))
644 err = sys_clock_nanosleep(which_clock, flags,
645 (struct timespec __user *) &in,
646 (struct timespec __user *) &out);
649 if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
650 put_compat_timespec(&out, rmtp))
653 if (err == -ERESTART_RESTARTBLOCK) {
654 restart = ¤t_thread_info()->restart_block;
655 restart->fn = compat_clock_nanosleep_restart;
656 restart->arg1 = (unsigned long) rmtp;
662 * We currently only need the following fields from the sigevent
663 * structure: sigev_value, sigev_signo, sig_notify and (sometimes
664 * sigev_notify_thread_id). The others are handled in user mode.
665 * We also assume that copying sigev_value.sival_int is sufficient
666 * to keep all the bits of sigev_value.sival_ptr intact.
668 int get_compat_sigevent(struct sigevent *event,
669 const struct compat_sigevent __user *u_event)
671 memset(event, 0, sizeof(*event));
672 return (!access_ok(VERIFY_READ, u_event, sizeof(*u_event)) ||
673 __get_user(event->sigev_value.sival_int,
674 &u_event->sigev_value.sival_int) ||
675 __get_user(event->sigev_signo, &u_event->sigev_signo) ||
676 __get_user(event->sigev_notify, &u_event->sigev_notify) ||
677 __get_user(event->sigev_notify_thread_id,
678 &u_event->sigev_notify_thread_id))
682 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
683 unsigned long bitmap_size)
688 unsigned long nr_compat_longs;
690 /* align bitmap up to nearest compat_long_t boundary */
691 bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
693 if (!access_ok(VERIFY_READ, umask, bitmap_size / 8))
696 nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
698 for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) {
701 for (j = 0; j < sizeof(m)/sizeof(um); j++) {
703 * We dont want to read past the end of the userspace
704 * bitmap. We must however ensure the end of the
705 * kernel bitmap is zeroed.
707 if (nr_compat_longs-- > 0) {
708 if (__get_user(um, umask))
715 m |= (long)um << (j * BITS_PER_COMPAT_LONG);
723 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
724 unsigned long bitmap_size)
729 unsigned long nr_compat_longs;
731 /* align bitmap up to nearest compat_long_t boundary */
732 bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
734 if (!access_ok(VERIFY_WRITE, umask, bitmap_size / 8))
737 nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
739 for (i = 0; i < BITS_TO_LONGS(bitmap_size); i++) {
742 for (j = 0; j < sizeof(m)/sizeof(um); j++) {
746 * We dont want to write past the end of the userspace
749 if (nr_compat_longs-- > 0) {
750 if (__put_user(um, umask))
764 sigset_from_compat (sigset_t *set, compat_sigset_t *compat)
766 switch (_NSIG_WORDS) {
767 case 4: set->sig[3] = compat->sig[6] | (((long)compat->sig[7]) << 32 );
768 case 3: set->sig[2] = compat->sig[4] | (((long)compat->sig[5]) << 32 );
769 case 2: set->sig[1] = compat->sig[2] | (((long)compat->sig[3]) << 32 );
770 case 1: set->sig[0] = compat->sig[0] | (((long)compat->sig[1]) << 32 );
775 compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese,
776 struct compat_siginfo __user *uinfo,
777 struct compat_timespec __user *uts, compat_size_t sigsetsize)
784 long ret, timeout = 0;
786 if (sigsetsize != sizeof(sigset_t))
789 if (copy_from_user(&s32, uthese, sizeof(compat_sigset_t)))
791 sigset_from_compat(&s, &s32);
792 sigdelsetmask(&s,sigmask(SIGKILL)|sigmask(SIGSTOP));
796 if (get_compat_timespec (&t, uts))
798 if (t.tv_nsec >= 1000000000L || t.tv_nsec < 0
803 spin_lock_irq(¤t->sighand->siglock);
804 sig = dequeue_signal(current, &s, &info);
806 timeout = MAX_SCHEDULE_TIMEOUT;
808 timeout = timespec_to_jiffies(&t)
809 +(t.tv_sec || t.tv_nsec);
811 current->real_blocked = current->blocked;
812 sigandsets(¤t->blocked, ¤t->blocked, &s);
815 spin_unlock_irq(¤t->sighand->siglock);
817 timeout = schedule_timeout_interruptible(timeout);
819 spin_lock_irq(¤t->sighand->siglock);
820 sig = dequeue_signal(current, &s, &info);
821 current->blocked = current->real_blocked;
822 siginitset(¤t->real_blocked, 0);
826 spin_unlock_irq(¤t->sighand->siglock);
831 if (copy_siginfo_to_user32(uinfo, &info))
835 ret = timeout?-EINTR:-EAGAIN;
841 #ifdef __ARCH_WANT_COMPAT_SYS_TIME
843 /* compat_time_t is a 32 bit "long" and needs to get converted. */
845 asmlinkage long compat_sys_time(compat_time_t __user * tloc)
850 do_gettimeofday(&tv);
854 if (put_user(i,tloc))
860 asmlinkage long compat_sys_stime(compat_time_t __user *tptr)
865 if (get_user(tv.tv_sec, tptr))
870 err = security_settime(&tv, NULL);
874 do_settimeofday(&tv);
878 #endif /* __ARCH_WANT_COMPAT_SYS_TIME */
880 #ifdef __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
881 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat_size_t sigsetsize)
884 compat_sigset_t newset32;
886 /* XXX: Don't preclude handling different sized sigset_t's. */
887 if (sigsetsize != sizeof(sigset_t))
890 if (copy_from_user(&newset32, unewset, sizeof(compat_sigset_t)))
892 sigset_from_compat(&newset, &newset32);
893 sigdelsetmask(&newset, sigmask(SIGKILL)|sigmask(SIGSTOP));
895 spin_lock_irq(¤t->sighand->siglock);
896 current->saved_sigmask = current->blocked;
897 current->blocked = newset;
899 spin_unlock_irq(¤t->sighand->siglock);
901 current->state = TASK_INTERRUPTIBLE;
903 set_thread_flag(TIF_RESTORE_SIGMASK);
904 return -ERESTARTNOHAND;
906 #endif /* __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND */
908 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp)
913 memset(&txc, 0, sizeof(struct timex));
915 if (!access_ok(VERIFY_READ, utp, sizeof(struct compat_timex)) ||
916 __get_user(txc.modes, &utp->modes) ||
917 __get_user(txc.offset, &utp->offset) ||
918 __get_user(txc.freq, &utp->freq) ||
919 __get_user(txc.maxerror, &utp->maxerror) ||
920 __get_user(txc.esterror, &utp->esterror) ||
921 __get_user(txc.status, &utp->status) ||
922 __get_user(txc.constant, &utp->constant) ||
923 __get_user(txc.precision, &utp->precision) ||
924 __get_user(txc.tolerance, &utp->tolerance) ||
925 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
926 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
927 __get_user(txc.tick, &utp->tick) ||
928 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
929 __get_user(txc.jitter, &utp->jitter) ||
930 __get_user(txc.shift, &utp->shift) ||
931 __get_user(txc.stabil, &utp->stabil) ||
932 __get_user(txc.jitcnt, &utp->jitcnt) ||
933 __get_user(txc.calcnt, &utp->calcnt) ||
934 __get_user(txc.errcnt, &utp->errcnt) ||
935 __get_user(txc.stbcnt, &utp->stbcnt))
938 ret = do_adjtimex(&txc);
940 if (!access_ok(VERIFY_WRITE, utp, sizeof(struct compat_timex)) ||
941 __put_user(txc.modes, &utp->modes) ||
942 __put_user(txc.offset, &utp->offset) ||
943 __put_user(txc.freq, &utp->freq) ||
944 __put_user(txc.maxerror, &utp->maxerror) ||
945 __put_user(txc.esterror, &utp->esterror) ||
946 __put_user(txc.status, &utp->status) ||
947 __put_user(txc.constant, &utp->constant) ||
948 __put_user(txc.precision, &utp->precision) ||
949 __put_user(txc.tolerance, &utp->tolerance) ||
950 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
951 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
952 __put_user(txc.tick, &utp->tick) ||
953 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
954 __put_user(txc.jitter, &utp->jitter) ||
955 __put_user(txc.shift, &utp->shift) ||
956 __put_user(txc.stabil, &utp->stabil) ||
957 __put_user(txc.jitcnt, &utp->jitcnt) ||
958 __put_user(txc.calcnt, &utp->calcnt) ||
959 __put_user(txc.errcnt, &utp->errcnt) ||
960 __put_user(txc.stbcnt, &utp->stbcnt))
967 asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_pages,
968 compat_uptr_t __user *pages32,
969 const int __user *nodes,
973 const void __user * __user *pages;
976 pages = compat_alloc_user_space(nr_pages * sizeof(void *));
977 for (i = 0; i < nr_pages; i++) {
980 if (get_user(p, pages32 + i) ||
981 put_user(compat_ptr(p), pages + i))
984 return sys_move_pages(pid, nr_pages, pages, nodes, status, flags);
987 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid,
988 compat_ulong_t maxnode,
989 const compat_ulong_t __user *old_nodes,
990 const compat_ulong_t __user *new_nodes)
992 unsigned long __user *old = NULL;
993 unsigned long __user *new = NULL;
995 unsigned long nr_bits;
998 nr_bits = min_t(unsigned long, maxnode - 1, MAX_NUMNODES);
999 size = ALIGN(nr_bits, BITS_PER_LONG) / 8;
1001 if (compat_get_bitmap(nodes_addr(tmp_mask), old_nodes, nr_bits))
1003 old = compat_alloc_user_space(new_nodes ? size * 2 : size);
1005 new = old + size / sizeof(unsigned long);
1006 if (copy_to_user(old, nodes_addr(tmp_mask), size))
1010 if (compat_get_bitmap(nodes_addr(tmp_mask), new_nodes, nr_bits))
1013 new = compat_alloc_user_space(size);
1014 if (copy_to_user(new, nodes_addr(tmp_mask), size))
1017 return sys_migrate_pages(pid, nr_bits + 1, old, new);
1021 struct compat_sysinfo {
1035 char _f[20-2*sizeof(u32)-sizeof(int)];
1039 compat_sys_sysinfo(struct compat_sysinfo __user *info)
1045 /* Check to see if any memory value is too large for 32-bit and scale
1048 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
1051 while (s.mem_unit < PAGE_SIZE) {
1056 s.totalram >>= bitcount;
1057 s.freeram >>= bitcount;
1058 s.sharedram >>= bitcount;
1059 s.bufferram >>= bitcount;
1060 s.totalswap >>= bitcount;
1061 s.freeswap >>= bitcount;
1062 s.totalhigh >>= bitcount;
1063 s.freehigh >>= bitcount;
1066 if (!access_ok(VERIFY_WRITE, info, sizeof(struct compat_sysinfo)) ||
1067 __put_user (s.uptime, &info->uptime) ||
1068 __put_user (s.loads[0], &info->loads[0]) ||
1069 __put_user (s.loads[1], &info->loads[1]) ||
1070 __put_user (s.loads[2], &info->loads[2]) ||
1071 __put_user (s.totalram, &info->totalram) ||
1072 __put_user (s.freeram, &info->freeram) ||
1073 __put_user (s.sharedram, &info->sharedram) ||
1074 __put_user (s.bufferram, &info->bufferram) ||
1075 __put_user (s.totalswap, &info->totalswap) ||
1076 __put_user (s.freeswap, &info->freeswap) ||
1077 __put_user (s.procs, &info->procs) ||
1078 __put_user (s.totalhigh, &info->totalhigh) ||
1079 __put_user (s.freehigh, &info->freehigh) ||
1080 __put_user (s.mem_unit, &info->mem_unit))