1 /* $Id: sys_sparc32.c,v 1.184 2002/02/09 19:49:31 davem Exp $
2 * sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
4 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
5 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
7 * These routines maintain argument size conversion between 32bit and 64bit
11 #include <linux/config.h>
12 #include <linux/kernel.h>
13 #include <linux/sched.h>
16 #include <linux/file.h>
17 #include <linux/signal.h>
18 #include <linux/resource.h>
19 #include <linux/times.h>
20 #include <linux/utsname.h>
21 #include <linux/timex.h>
22 #include <linux/smp.h>
23 #include <linux/smp_lock.h>
24 #include <linux/sem.h>
25 #include <linux/msg.h>
26 #include <linux/shm.h>
27 #include <linux/slab.h>
28 #include <linux/uio.h>
29 #include <linux/nfs_fs.h>
30 #include <linux/quota.h>
31 #include <linux/module.h>
32 #include <linux/sunrpc/svc.h>
33 #include <linux/nfsd/nfsd.h>
34 #include <linux/nfsd/cache.h>
35 #include <linux/nfsd/xdr.h>
36 #include <linux/nfsd/syscall.h>
37 #include <linux/poll.h>
38 #include <linux/personality.h>
39 #include <linux/stat.h>
40 #include <linux/filter.h>
41 #include <linux/highmem.h>
42 #include <linux/highuid.h>
43 #include <linux/mman.h>
44 #include <linux/ipv6.h>
46 #include <linux/icmpv6.h>
47 #include <linux/syscalls.h>
48 #include <linux/sysctl.h>
49 #include <linux/binfmts.h>
50 #include <linux/dnotify.h>
51 #include <linux/security.h>
52 #include <linux/compat.h>
53 #include <linux/vfs.h>
54 #include <linux/netfilter_ipv4/ip_tables.h>
55 #include <linux/ptrace.h>
56 #include <linux/highuid.h>
58 #include <asm/types.h>
60 #include <asm/uaccess.h>
61 #include <asm/fpumacro.h>
62 #include <asm/semaphore.h>
63 #include <asm/mmu_context.h>
65 asmlinkage long sys32_chown16(const char __user * filename, u16 user, u16 group)
67 return sys_chown(filename, low2highuid(user), low2highgid(group));
70 asmlinkage long sys32_lchown16(const char __user * filename, u16 user, u16 group)
72 return sys_lchown(filename, low2highuid(user), low2highgid(group));
75 asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group)
77 return sys_fchown(fd, low2highuid(user), low2highgid(group));
80 asmlinkage long sys32_setregid16(u16 rgid, u16 egid)
82 return sys_setregid(low2highgid(rgid), low2highgid(egid));
85 asmlinkage long sys32_setgid16(u16 gid)
87 return sys_setgid((gid_t)gid);
90 asmlinkage long sys32_setreuid16(u16 ruid, u16 euid)
92 return sys_setreuid(low2highuid(ruid), low2highuid(euid));
95 asmlinkage long sys32_setuid16(u16 uid)
97 return sys_setuid((uid_t)uid);
100 asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid)
102 return sys_setresuid(low2highuid(ruid), low2highuid(euid),
106 asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user *suid)
110 if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
111 !(retval = put_user(high2lowuid(current->euid), euid)))
112 retval = put_user(high2lowuid(current->suid), suid);
117 asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid)
119 return sys_setresgid(low2highgid(rgid), low2highgid(egid),
123 asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user *sgid)
127 if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
128 !(retval = put_user(high2lowgid(current->egid), egid)))
129 retval = put_user(high2lowgid(current->sgid), sgid);
134 asmlinkage long sys32_setfsuid16(u16 uid)
136 return sys_setfsuid((uid_t)uid);
139 asmlinkage long sys32_setfsgid16(u16 gid)
141 return sys_setfsgid((gid_t)gid);
144 static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info)
149 for (i = 0; i < group_info->ngroups; i++) {
150 group = (u16)GROUP_AT(group_info, i);
151 if (put_user(group, grouplist+i))
158 static int groups16_from_user(struct group_info *group_info, u16 __user *grouplist)
163 for (i = 0; i < group_info->ngroups; i++) {
164 if (get_user(group, grouplist+i))
166 GROUP_AT(group_info, i) = (gid_t)group;
172 asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist)
179 get_group_info(current->group_info);
180 i = current->group_info->ngroups;
182 if (i > gidsetsize) {
186 if (groups16_to_user(grouplist, current->group_info)) {
192 put_group_info(current->group_info);
196 asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist)
198 struct group_info *group_info;
201 if (!capable(CAP_SETGID))
203 if ((unsigned)gidsetsize > NGROUPS_MAX)
206 group_info = groups_alloc(gidsetsize);
209 retval = groups16_from_user(group_info, grouplist);
211 put_group_info(group_info);
215 retval = set_current_groups(group_info);
216 put_group_info(group_info);
221 asmlinkage long sys32_getuid16(void)
223 return high2lowuid(current->uid);
226 asmlinkage long sys32_geteuid16(void)
228 return high2lowuid(current->euid);
231 asmlinkage long sys32_getgid16(void)
233 return high2lowgid(current->gid);
236 asmlinkage long sys32_getegid16(void)
238 return high2lowgid(current->egid);
241 /* 32-bit timeval and related flotsam. */
243 static long get_tv32(struct timeval *o, struct compat_timeval __user *i)
245 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
246 (__get_user(o->tv_sec, &i->tv_sec) |
247 __get_user(o->tv_usec, &i->tv_usec)));
250 static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
252 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
253 (__put_user(i->tv_sec, &o->tv_sec) |
254 __put_user(i->tv_usec, &o->tv_usec)));
257 #ifdef CONFIG_SYSVIPC
258 asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
262 version = call >> 16; /* hack for backward compatibility */
268 /* sign extend semid */
269 return compat_sys_semtimedop((int)first,
270 compat_ptr(ptr), second,
272 /* else fall through for normal semop() */
274 /* struct sembuf is the same on 32 and 64bit :)) */
275 /* sign extend semid */
276 return sys_semtimedop((int)first, compat_ptr(ptr), second,
279 /* sign extend key, nsems */
280 return sys_semget((int)first, (int)second, third);
282 /* sign extend semid, semnum */
283 return compat_sys_semctl((int)first, (int)second, third,
287 /* sign extend msqid */
288 return compat_sys_msgsnd((int)first, (int)second, third,
291 /* sign extend msqid, msgtyp */
292 return compat_sys_msgrcv((int)first, second, (int)fifth,
293 third, version, compat_ptr(ptr));
295 /* sign extend key */
296 return sys_msgget((int)first, second);
298 /* sign extend msqid */
299 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
302 /* sign extend shmid */
303 return compat_sys_shmat((int)first, second, third, version,
306 return sys_shmdt(compat_ptr(ptr));
308 /* sign extend key_t */
309 return sys_shmget((int)first, second, third);
311 /* sign extend shmid */
312 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
322 asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
327 return sys_truncate(path, (high << 32) | low);
330 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
335 return sys_ftruncate(fd, (high << 32) | low);
338 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
342 if (stat->size > MAX_NON_LFS || !old_valid_dev(stat->dev) ||
343 !old_valid_dev(stat->rdev))
346 err = put_user(old_encode_dev(stat->dev), &statbuf->st_dev);
347 err |= put_user(stat->ino, &statbuf->st_ino);
348 err |= put_user(stat->mode, &statbuf->st_mode);
349 err |= put_user(stat->nlink, &statbuf->st_nlink);
350 err |= put_user(high2lowuid(stat->uid), &statbuf->st_uid);
351 err |= put_user(high2lowgid(stat->gid), &statbuf->st_gid);
352 err |= put_user(old_encode_dev(stat->rdev), &statbuf->st_rdev);
353 err |= put_user(stat->size, &statbuf->st_size);
354 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
355 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
356 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
357 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
358 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
359 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
360 err |= put_user(stat->blksize, &statbuf->st_blksize);
361 err |= put_user(stat->blocks, &statbuf->st_blocks);
362 err |= put_user(0, &statbuf->__unused4[0]);
363 err |= put_user(0, &statbuf->__unused4[1]);
368 int cp_compat_stat64(struct kstat *stat, struct compat_stat64 __user *statbuf)
372 err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
373 err |= put_user(stat->ino, &statbuf->st_ino);
374 err |= put_user(stat->mode, &statbuf->st_mode);
375 err |= put_user(stat->nlink, &statbuf->st_nlink);
376 err |= put_user(stat->uid, &statbuf->st_uid);
377 err |= put_user(stat->gid, &statbuf->st_gid);
378 err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
379 err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
380 err |= put_user(stat->size, &statbuf->st_size);
381 err |= put_user(stat->blksize, &statbuf->st_blksize);
382 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
383 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
384 err |= put_user(stat->blocks, &statbuf->st_blocks);
385 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
386 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
387 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
388 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
389 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
390 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
391 err |= put_user(0, &statbuf->__unused4);
392 err |= put_user(0, &statbuf->__unused5);
397 asmlinkage long compat_sys_stat64(char __user * filename,
398 struct compat_stat64 __user *statbuf)
401 int error = vfs_stat(filename, &stat);
404 error = cp_compat_stat64(&stat, statbuf);
408 asmlinkage long compat_sys_lstat64(char __user * filename,
409 struct compat_stat64 __user *statbuf)
412 int error = vfs_lstat(filename, &stat);
415 error = cp_compat_stat64(&stat, statbuf);
419 asmlinkage long compat_sys_fstat64(unsigned int fd,
420 struct compat_stat64 __user * statbuf)
423 int error = vfs_fstat(fd, &stat);
426 error = cp_compat_stat64(&stat, statbuf);
430 asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
432 return sys_sysfs(option, arg1, arg2);
444 unsigned short procs;
449 char _f[20-2*sizeof(int)-sizeof(int)];
452 asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
457 mm_segment_t old_fs = get_fs ();
460 ret = sys_sysinfo((struct sysinfo __user *) &s);
462 /* Check to see if any memory value is too large for 32-bit and
463 * scale down if needed.
465 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
466 while (s.mem_unit < PAGE_SIZE) {
470 s.totalram >>= bitcount;
471 s.freeram >>= bitcount;
472 s.sharedram >>= bitcount;
473 s.bufferram >>= bitcount;
474 s.totalswap >>= bitcount;
475 s.freeswap >>= bitcount;
476 s.totalhigh >>= bitcount;
477 s.freehigh >>= bitcount;
480 err = put_user (s.uptime, &info->uptime);
481 err |= __put_user (s.loads[0], &info->loads[0]);
482 err |= __put_user (s.loads[1], &info->loads[1]);
483 err |= __put_user (s.loads[2], &info->loads[2]);
484 err |= __put_user (s.totalram, &info->totalram);
485 err |= __put_user (s.freeram, &info->freeram);
486 err |= __put_user (s.sharedram, &info->sharedram);
487 err |= __put_user (s.bufferram, &info->bufferram);
488 err |= __put_user (s.totalswap, &info->totalswap);
489 err |= __put_user (s.freeswap, &info->freeswap);
490 err |= __put_user (s.procs, &info->procs);
491 err |= __put_user (s.totalhigh, &info->totalhigh);
492 err |= __put_user (s.freehigh, &info->freehigh);
493 err |= __put_user (s.mem_unit, &info->mem_unit);
499 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
503 mm_segment_t old_fs = get_fs ();
506 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
508 if (put_compat_timespec(&t, interval))
513 asmlinkage long compat_sys_rt_sigprocmask(int how,
514 compat_sigset_t __user *set,
515 compat_sigset_t __user *oset,
516 compat_size_t sigsetsize)
521 mm_segment_t old_fs = get_fs();
524 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
526 switch (_NSIG_WORDS) {
527 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
528 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
529 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
530 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
534 ret = sys_rt_sigprocmask(how,
535 set ? (sigset_t __user *) &s : NULL,
536 oset ? (sigset_t __user *) &s : NULL,
541 switch (_NSIG_WORDS) {
542 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
543 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
544 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
545 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
547 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
553 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
554 compat_size_t sigsetsize)
559 mm_segment_t old_fs = get_fs();
562 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
565 switch (_NSIG_WORDS) {
566 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
567 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
568 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
569 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
571 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
577 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
578 struct compat_siginfo __user *uinfo)
582 mm_segment_t old_fs = get_fs();
584 if (copy_siginfo_from_user32(&info, uinfo))
588 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
593 asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
594 struct old_sigaction32 __user *oact)
596 struct k_sigaction new_ka, old_ka;
600 set_thread_flag(TIF_NEWSIGNALS);
605 compat_old_sigset_t mask;
606 u32 u_handler, u_restorer;
608 ret = get_user(u_handler, &act->sa_handler);
609 new_ka.sa.sa_handler = compat_ptr(u_handler);
610 ret |= __get_user(u_restorer, &act->sa_restorer);
611 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
612 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
613 ret |= __get_user(mask, &act->sa_mask);
616 new_ka.ka_restorer = NULL;
617 siginitset(&new_ka.sa.sa_mask, mask);
620 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
623 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
624 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
625 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
626 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
632 asmlinkage long compat_sys_rt_sigaction(int sig,
633 struct sigaction32 __user *act,
634 struct sigaction32 __user *oact,
635 void __user *restorer,
636 compat_size_t sigsetsize)
638 struct k_sigaction new_ka, old_ka;
640 compat_sigset_t set32;
642 /* XXX: Don't preclude handling different sized sigset_t's. */
643 if (sigsetsize != sizeof(compat_sigset_t))
646 /* All tasks which use RT signals (effectively) use
649 set_thread_flag(TIF_NEWSIGNALS);
652 u32 u_handler, u_restorer;
654 new_ka.ka_restorer = restorer;
655 ret = get_user(u_handler, &act->sa_handler);
656 new_ka.sa.sa_handler = compat_ptr(u_handler);
657 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
658 switch (_NSIG_WORDS) {
659 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
660 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
661 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
662 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
664 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
665 ret |= __get_user(u_restorer, &act->sa_restorer);
666 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
671 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
674 switch (_NSIG_WORDS) {
675 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
676 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
677 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
678 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
680 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
681 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
682 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
683 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
692 * sparc32_execve() executes a new program after the asm stub has set
693 * things up for us. This should basically do what I want it to.
695 asmlinkage long sparc32_execve(struct pt_regs *regs)
700 /* User register window flush is done by entry.S */
702 /* Check for indirect call. */
703 if ((u32)regs->u_regs[UREG_G1] == 0)
706 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
707 error = PTR_ERR(filename);
708 if (IS_ERR(filename))
711 error = compat_do_execve(filename,
712 compat_ptr(regs->u_regs[base + UREG_I1]),
713 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
719 current_thread_info()->xfsr[0] = 0;
720 current_thread_info()->fpsaved[0] = 0;
721 regs->tstate &= ~TSTATE_PEF;
723 current->ptrace &= ~PT_DTRACE;
724 task_unlock(current);
730 #ifdef CONFIG_MODULES
732 asmlinkage long sys32_init_module(void __user *umod, u32 len,
733 const char __user *uargs)
735 return sys_init_module(umod, len, uargs);
738 asmlinkage long sys32_delete_module(const char __user *name_user,
741 return sys_delete_module(name_user, flags);
744 #else /* CONFIG_MODULES */
746 asmlinkage long sys32_init_module(const char __user *name_user,
747 struct module __user *mod_user)
752 asmlinkage long sys32_delete_module(const char __user *name_user)
757 #endif /* CONFIG_MODULES */
759 /* Translations due to time_t size differences. Which affects all
760 sorts of things, like timeval and itimerval. */
762 extern struct timezone sys_tz;
764 asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv,
765 struct timezone __user *tz)
769 do_gettimeofday(&ktv);
770 if (put_tv32(tv, &ktv))
774 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
780 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
784 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
786 if (__get_user(o->tv_sec, &i->tv_sec))
788 if (__get_user(usec, &i->tv_usec))
790 o->tv_nsec = usec * 1000;
794 asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv,
795 struct timezone __user *tz)
801 if (get_ts32(&kts, tv))
805 if (copy_from_user(&ktz, tz, sizeof(ktz)))
809 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
812 asmlinkage long sys32_utimes(char __user *filename,
813 struct compat_timeval __user *tvs)
815 struct timeval ktvs[2];
818 if (get_tv32(&ktvs[0], tvs) ||
819 get_tv32(&ktvs[1], 1+tvs))
823 return do_utimes(filename, (tvs ? &ktvs[0] : NULL));
826 /* These are here just in case some old sparc32 binary calls it. */
827 asmlinkage long sys32_pause(void)
829 current->state = TASK_INTERRUPTIBLE;
831 return -ERESTARTNOHAND;
834 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
840 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
843 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
849 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
852 asmlinkage long compat_sys_readahead(int fd,
857 return sys_readahead(fd, (offhi << 32) | offlo, count);
860 long compat_sys_fadvise64(int fd,
863 compat_size_t len, int advice)
865 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
868 long compat_sys_fadvise64_64(int fd,
869 unsigned long offhi, unsigned long offlo,
870 unsigned long lenhi, unsigned long lenlo,
873 return sys_fadvise64_64(fd,
874 (offhi << 32) | offlo,
875 (lenhi << 32) | lenlo,
879 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
880 compat_off_t __user *offset,
883 mm_segment_t old_fs = get_fs();
887 if (offset && get_user(of, offset))
891 ret = sys_sendfile(out_fd, in_fd,
892 offset ? (off_t __user *) &of : NULL,
896 if (offset && put_user(of, offset))
902 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
903 compat_loff_t __user *offset,
906 mm_segment_t old_fs = get_fs();
910 if (offset && get_user(lof, offset))
914 ret = sys_sendfile64(out_fd, in_fd,
915 offset ? (loff_t __user *) &lof : NULL,
919 if (offset && put_user(lof, offset))
925 /* Handle adjtimex compatibility. */
929 s32 offset, freq, maxerror, esterror;
930 s32 status, constant, precision, tolerance;
931 struct compat_timeval time;
933 s32 ppsfreq, jitter, shift, stabil;
934 s32 jitcnt, calcnt, errcnt, stbcnt;
935 s32 :32; s32 :32; s32 :32; s32 :32;
936 s32 :32; s32 :32; s32 :32; s32 :32;
937 s32 :32; s32 :32; s32 :32; s32 :32;
940 extern int do_adjtimex(struct timex *);
942 asmlinkage long sys32_adjtimex(struct timex32 __user *utp)
947 memset(&txc, 0, sizeof(struct timex));
949 if (get_user(txc.modes, &utp->modes) ||
950 __get_user(txc.offset, &utp->offset) ||
951 __get_user(txc.freq, &utp->freq) ||
952 __get_user(txc.maxerror, &utp->maxerror) ||
953 __get_user(txc.esterror, &utp->esterror) ||
954 __get_user(txc.status, &utp->status) ||
955 __get_user(txc.constant, &utp->constant) ||
956 __get_user(txc.precision, &utp->precision) ||
957 __get_user(txc.tolerance, &utp->tolerance) ||
958 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
959 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
960 __get_user(txc.tick, &utp->tick) ||
961 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
962 __get_user(txc.jitter, &utp->jitter) ||
963 __get_user(txc.shift, &utp->shift) ||
964 __get_user(txc.stabil, &utp->stabil) ||
965 __get_user(txc.jitcnt, &utp->jitcnt) ||
966 __get_user(txc.calcnt, &utp->calcnt) ||
967 __get_user(txc.errcnt, &utp->errcnt) ||
968 __get_user(txc.stbcnt, &utp->stbcnt))
971 ret = do_adjtimex(&txc);
973 if (put_user(txc.modes, &utp->modes) ||
974 __put_user(txc.offset, &utp->offset) ||
975 __put_user(txc.freq, &utp->freq) ||
976 __put_user(txc.maxerror, &utp->maxerror) ||
977 __put_user(txc.esterror, &utp->esterror) ||
978 __put_user(txc.status, &utp->status) ||
979 __put_user(txc.constant, &utp->constant) ||
980 __put_user(txc.precision, &utp->precision) ||
981 __put_user(txc.tolerance, &utp->tolerance) ||
982 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
983 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
984 __put_user(txc.tick, &utp->tick) ||
985 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
986 __put_user(txc.jitter, &utp->jitter) ||
987 __put_user(txc.shift, &utp->shift) ||
988 __put_user(txc.stabil, &utp->stabil) ||
989 __put_user(txc.jitcnt, &utp->jitcnt) ||
990 __put_user(txc.calcnt, &utp->calcnt) ||
991 __put_user(txc.errcnt, &utp->errcnt) ||
992 __put_user(txc.stbcnt, &utp->stbcnt))
998 /* This is just a version for 32-bit applications which does
999 * not force O_LARGEFILE on.
1002 asmlinkage long sparc32_open(const char __user *filename,
1003 int flags, int mode)
1005 return do_sys_open(filename, flags, mode);
1008 extern unsigned long do_mremap(unsigned long addr,
1009 unsigned long old_len, unsigned long new_len,
1010 unsigned long flags, unsigned long new_addr);
1012 asmlinkage unsigned long sys32_mremap(unsigned long addr,
1013 unsigned long old_len, unsigned long new_len,
1014 unsigned long flags, u32 __new_addr)
1016 struct vm_area_struct *vma;
1017 unsigned long ret = -EINVAL;
1018 unsigned long new_addr = __new_addr;
1020 if (old_len > 0xf0000000UL || new_len > 0xf0000000UL)
1022 if (addr > 0xf0000000UL - old_len)
1024 down_write(¤t->mm->mmap_sem);
1025 if (flags & MREMAP_FIXED) {
1026 if (new_addr > 0xf0000000UL - new_len)
1028 } else if (addr > 0xf0000000UL - new_len) {
1029 unsigned long map_flags = 0;
1030 struct file *file = NULL;
1033 if (!(flags & MREMAP_MAYMOVE))
1036 vma = find_vma(current->mm, addr);
1038 if (vma->vm_flags & VM_SHARED)
1039 map_flags |= MAP_SHARED;
1040 file = vma->vm_file;
1043 /* MREMAP_FIXED checked above. */
1044 new_addr = get_unmapped_area(file, addr, new_len,
1045 vma ? vma->vm_pgoff : 0,
1048 if (new_addr & ~PAGE_MASK)
1050 flags |= MREMAP_FIXED;
1052 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
1054 up_write(¤t->mm->mmap_sem);
1059 struct __sysctl_args32 {
1069 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
1071 #ifndef CONFIG_SYSCTL
1074 struct __sysctl_args32 tmp;
1076 size_t oldlen, __user *oldlenp = NULL;
1077 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
1079 if (copy_from_user(&tmp, args, sizeof(tmp)))
1082 if (tmp.oldval && tmp.oldlenp) {
1083 /* Duh, this is ugly and might not work if sysctl_args
1084 is in read-only memory, but do_sysctl does indirectly
1085 a lot of uaccess in both directions and we'd have to
1086 basically copy the whole sysctl.c here, and
1087 glibc's __sysctl uses rw memory for the structure
1089 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
1090 put_user(oldlen, (size_t __user *)addr))
1092 oldlenp = (size_t __user *)addr;
1096 error = do_sysctl((int __user *)(unsigned long) tmp.name,
1098 (void __user *)(unsigned long) tmp.oldval,
1100 (void __user *)(unsigned long) tmp.newval,
1105 if (get_user(oldlen, (size_t __user *)addr) ||
1106 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
1109 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
1116 long sys32_lookup_dcookie(unsigned long cookie_high,
1117 unsigned long cookie_low,
1118 char __user *buf, size_t len)
1120 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
1124 extern asmlinkage long
1125 sys_timer_create(clockid_t which_clock,
1126 struct sigevent __user *timer_event_spec,
1127 timer_t __user *created_timer_id);
1130 sys32_timer_create(u32 clock, struct compat_sigevent __user *se32,
1131 timer_t __user *timer_id)
1139 return sys_timer_create(clock, NULL, timer_id);
1141 if (get_compat_sigevent(&se, se32))
1144 if (!access_ok(VERIFY_WRITE,timer_id,sizeof(timer_t)))
1149 err = sys_timer_create(clock,
1150 (struct sigevent __user *) &se,
1151 (timer_t __user *) &t);
1155 err = __put_user (t, timer_id);