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>
14 #include <linux/capability.h>
17 #include <linux/file.h>
18 #include <linux/signal.h>
19 #include <linux/resource.h>
20 #include <linux/times.h>
21 #include <linux/utsname.h>
22 #include <linux/timex.h>
23 #include <linux/smp.h>
24 #include <linux/smp_lock.h>
25 #include <linux/sem.h>
26 #include <linux/msg.h>
27 #include <linux/shm.h>
28 #include <linux/slab.h>
29 #include <linux/uio.h>
30 #include <linux/nfs_fs.h>
31 #include <linux/quota.h>
32 #include <linux/module.h>
33 #include <linux/sunrpc/svc.h>
34 #include <linux/nfsd/nfsd.h>
35 #include <linux/nfsd/cache.h>
36 #include <linux/nfsd/xdr.h>
37 #include <linux/nfsd/syscall.h>
38 #include <linux/poll.h>
39 #include <linux/personality.h>
40 #include <linux/stat.h>
41 #include <linux/filter.h>
42 #include <linux/highmem.h>
43 #include <linux/highuid.h>
44 #include <linux/mman.h>
45 #include <linux/ipv6.h>
47 #include <linux/icmpv6.h>
48 #include <linux/syscalls.h>
49 #include <linux/sysctl.h>
50 #include <linux/binfmts.h>
51 #include <linux/dnotify.h>
52 #include <linux/security.h>
53 #include <linux/compat.h>
54 #include <linux/vfs.h>
55 #include <linux/netfilter_ipv4/ip_tables.h>
56 #include <linux/ptrace.h>
57 #include <linux/highuid.h>
59 #include <asm/types.h>
61 #include <asm/uaccess.h>
62 #include <asm/fpumacro.h>
63 #include <asm/semaphore.h>
64 #include <asm/mmu_context.h>
66 asmlinkage long sys32_chown16(const char __user * filename, u16 user, u16 group)
68 return sys_chown(filename, low2highuid(user), low2highgid(group));
71 asmlinkage long sys32_lchown16(const char __user * filename, u16 user, u16 group)
73 return sys_lchown(filename, low2highuid(user), low2highgid(group));
76 asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group)
78 return sys_fchown(fd, low2highuid(user), low2highgid(group));
81 asmlinkage long sys32_setregid16(u16 rgid, u16 egid)
83 return sys_setregid(low2highgid(rgid), low2highgid(egid));
86 asmlinkage long sys32_setgid16(u16 gid)
88 return sys_setgid((gid_t)gid);
91 asmlinkage long sys32_setreuid16(u16 ruid, u16 euid)
93 return sys_setreuid(low2highuid(ruid), low2highuid(euid));
96 asmlinkage long sys32_setuid16(u16 uid)
98 return sys_setuid((uid_t)uid);
101 asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid)
103 return sys_setresuid(low2highuid(ruid), low2highuid(euid),
107 asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user *suid)
111 if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
112 !(retval = put_user(high2lowuid(current->euid), euid)))
113 retval = put_user(high2lowuid(current->suid), suid);
118 asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid)
120 return sys_setresgid(low2highgid(rgid), low2highgid(egid),
124 asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user *sgid)
128 if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
129 !(retval = put_user(high2lowgid(current->egid), egid)))
130 retval = put_user(high2lowgid(current->sgid), sgid);
135 asmlinkage long sys32_setfsuid16(u16 uid)
137 return sys_setfsuid((uid_t)uid);
140 asmlinkage long sys32_setfsgid16(u16 gid)
142 return sys_setfsgid((gid_t)gid);
145 static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info)
150 for (i = 0; i < group_info->ngroups; i++) {
151 group = (u16)GROUP_AT(group_info, i);
152 if (put_user(group, grouplist+i))
159 static int groups16_from_user(struct group_info *group_info, u16 __user *grouplist)
164 for (i = 0; i < group_info->ngroups; i++) {
165 if (get_user(group, grouplist+i))
167 GROUP_AT(group_info, i) = (gid_t)group;
173 asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist)
180 get_group_info(current->group_info);
181 i = current->group_info->ngroups;
183 if (i > gidsetsize) {
187 if (groups16_to_user(grouplist, current->group_info)) {
193 put_group_info(current->group_info);
197 asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist)
199 struct group_info *group_info;
202 if (!capable(CAP_SETGID))
204 if ((unsigned)gidsetsize > NGROUPS_MAX)
207 group_info = groups_alloc(gidsetsize);
210 retval = groups16_from_user(group_info, grouplist);
212 put_group_info(group_info);
216 retval = set_current_groups(group_info);
217 put_group_info(group_info);
222 asmlinkage long sys32_getuid16(void)
224 return high2lowuid(current->uid);
227 asmlinkage long sys32_geteuid16(void)
229 return high2lowuid(current->euid);
232 asmlinkage long sys32_getgid16(void)
234 return high2lowgid(current->gid);
237 asmlinkage long sys32_getegid16(void)
239 return high2lowgid(current->egid);
242 /* 32-bit timeval and related flotsam. */
244 static long get_tv32(struct timeval *o, struct compat_timeval __user *i)
246 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
247 (__get_user(o->tv_sec, &i->tv_sec) |
248 __get_user(o->tv_usec, &i->tv_usec)));
251 static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
253 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
254 (__put_user(i->tv_sec, &o->tv_sec) |
255 __put_user(i->tv_usec, &o->tv_usec)));
258 #ifdef CONFIG_SYSVIPC
259 asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
263 version = call >> 16; /* hack for backward compatibility */
269 /* sign extend semid */
270 return compat_sys_semtimedop((int)first,
271 compat_ptr(ptr), second,
273 /* else fall through for normal semop() */
275 /* struct sembuf is the same on 32 and 64bit :)) */
276 /* sign extend semid */
277 return sys_semtimedop((int)first, compat_ptr(ptr), second,
280 /* sign extend key, nsems */
281 return sys_semget((int)first, (int)second, third);
283 /* sign extend semid, semnum */
284 return compat_sys_semctl((int)first, (int)second, third,
288 /* sign extend msqid */
289 return compat_sys_msgsnd((int)first, (int)second, third,
292 /* sign extend msqid, msgtyp */
293 return compat_sys_msgrcv((int)first, second, (int)fifth,
294 third, version, compat_ptr(ptr));
296 /* sign extend key */
297 return sys_msgget((int)first, second);
299 /* sign extend msqid */
300 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
303 /* sign extend shmid */
304 return compat_sys_shmat((int)first, second, third, version,
307 return sys_shmdt(compat_ptr(ptr));
309 /* sign extend key_t */
310 return sys_shmget((int)first, second, third);
312 /* sign extend shmid */
313 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
323 asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
328 return sys_truncate(path, (high << 32) | low);
331 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
336 return sys_ftruncate(fd, (high << 32) | low);
339 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
343 if (stat->size > MAX_NON_LFS || !old_valid_dev(stat->dev) ||
344 !old_valid_dev(stat->rdev))
347 err = put_user(old_encode_dev(stat->dev), &statbuf->st_dev);
348 err |= put_user(stat->ino, &statbuf->st_ino);
349 err |= put_user(stat->mode, &statbuf->st_mode);
350 err |= put_user(stat->nlink, &statbuf->st_nlink);
351 err |= put_user(high2lowuid(stat->uid), &statbuf->st_uid);
352 err |= put_user(high2lowgid(stat->gid), &statbuf->st_gid);
353 err |= put_user(old_encode_dev(stat->rdev), &statbuf->st_rdev);
354 err |= put_user(stat->size, &statbuf->st_size);
355 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
356 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
357 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
358 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
359 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
360 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
361 err |= put_user(stat->blksize, &statbuf->st_blksize);
362 err |= put_user(stat->blocks, &statbuf->st_blocks);
363 err |= put_user(0, &statbuf->__unused4[0]);
364 err |= put_user(0, &statbuf->__unused4[1]);
369 int cp_compat_stat64(struct kstat *stat, struct compat_stat64 __user *statbuf)
373 err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
374 err |= put_user(stat->ino, &statbuf->st_ino);
375 err |= put_user(stat->mode, &statbuf->st_mode);
376 err |= put_user(stat->nlink, &statbuf->st_nlink);
377 err |= put_user(stat->uid, &statbuf->st_uid);
378 err |= put_user(stat->gid, &statbuf->st_gid);
379 err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
380 err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
381 err |= put_user(stat->size, &statbuf->st_size);
382 err |= put_user(stat->blksize, &statbuf->st_blksize);
383 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
384 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
385 err |= put_user(stat->blocks, &statbuf->st_blocks);
386 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
387 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
388 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
389 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
390 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
391 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
392 err |= put_user(0, &statbuf->__unused4);
393 err |= put_user(0, &statbuf->__unused5);
398 asmlinkage long compat_sys_stat64(char __user * filename,
399 struct compat_stat64 __user *statbuf)
402 int error = vfs_stat(filename, &stat);
405 error = cp_compat_stat64(&stat, statbuf);
409 asmlinkage long compat_sys_lstat64(char __user * filename,
410 struct compat_stat64 __user *statbuf)
413 int error = vfs_lstat(filename, &stat);
416 error = cp_compat_stat64(&stat, statbuf);
420 asmlinkage long compat_sys_fstat64(unsigned int fd,
421 struct compat_stat64 __user * statbuf)
424 int error = vfs_fstat(fd, &stat);
427 error = cp_compat_stat64(&stat, statbuf);
431 asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
433 return sys_sysfs(option, arg1, arg2);
445 unsigned short procs;
450 char _f[20-2*sizeof(int)-sizeof(int)];
453 asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
458 mm_segment_t old_fs = get_fs ();
461 ret = sys_sysinfo((struct sysinfo __user *) &s);
463 /* Check to see if any memory value is too large for 32-bit and
464 * scale down if needed.
466 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
467 while (s.mem_unit < PAGE_SIZE) {
471 s.totalram >>= bitcount;
472 s.freeram >>= bitcount;
473 s.sharedram >>= bitcount;
474 s.bufferram >>= bitcount;
475 s.totalswap >>= bitcount;
476 s.freeswap >>= bitcount;
477 s.totalhigh >>= bitcount;
478 s.freehigh >>= bitcount;
481 err = put_user (s.uptime, &info->uptime);
482 err |= __put_user (s.loads[0], &info->loads[0]);
483 err |= __put_user (s.loads[1], &info->loads[1]);
484 err |= __put_user (s.loads[2], &info->loads[2]);
485 err |= __put_user (s.totalram, &info->totalram);
486 err |= __put_user (s.freeram, &info->freeram);
487 err |= __put_user (s.sharedram, &info->sharedram);
488 err |= __put_user (s.bufferram, &info->bufferram);
489 err |= __put_user (s.totalswap, &info->totalswap);
490 err |= __put_user (s.freeswap, &info->freeswap);
491 err |= __put_user (s.procs, &info->procs);
492 err |= __put_user (s.totalhigh, &info->totalhigh);
493 err |= __put_user (s.freehigh, &info->freehigh);
494 err |= __put_user (s.mem_unit, &info->mem_unit);
500 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
504 mm_segment_t old_fs = get_fs ();
507 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
509 if (put_compat_timespec(&t, interval))
514 asmlinkage long compat_sys_rt_sigprocmask(int how,
515 compat_sigset_t __user *set,
516 compat_sigset_t __user *oset,
517 compat_size_t sigsetsize)
522 mm_segment_t old_fs = get_fs();
525 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
527 switch (_NSIG_WORDS) {
528 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
529 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
530 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
531 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
535 ret = sys_rt_sigprocmask(how,
536 set ? (sigset_t __user *) &s : NULL,
537 oset ? (sigset_t __user *) &s : NULL,
542 switch (_NSIG_WORDS) {
543 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
544 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
545 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
546 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
548 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
554 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
555 compat_size_t sigsetsize)
560 mm_segment_t old_fs = get_fs();
563 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
566 switch (_NSIG_WORDS) {
567 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
568 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
569 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
570 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
572 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
578 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
579 struct compat_siginfo __user *uinfo)
583 mm_segment_t old_fs = get_fs();
585 if (copy_siginfo_from_user32(&info, uinfo))
589 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
594 asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
595 struct old_sigaction32 __user *oact)
597 struct k_sigaction new_ka, old_ka;
601 set_thread_flag(TIF_NEWSIGNALS);
606 compat_old_sigset_t mask;
607 u32 u_handler, u_restorer;
609 ret = get_user(u_handler, &act->sa_handler);
610 new_ka.sa.sa_handler = compat_ptr(u_handler);
611 ret |= __get_user(u_restorer, &act->sa_restorer);
612 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
613 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
614 ret |= __get_user(mask, &act->sa_mask);
617 new_ka.ka_restorer = NULL;
618 siginitset(&new_ka.sa.sa_mask, mask);
621 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
624 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
625 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
626 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
627 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
633 asmlinkage long compat_sys_rt_sigaction(int sig,
634 struct sigaction32 __user *act,
635 struct sigaction32 __user *oact,
636 void __user *restorer,
637 compat_size_t sigsetsize)
639 struct k_sigaction new_ka, old_ka;
641 compat_sigset_t set32;
643 /* XXX: Don't preclude handling different sized sigset_t's. */
644 if (sigsetsize != sizeof(compat_sigset_t))
647 /* All tasks which use RT signals (effectively) use
650 set_thread_flag(TIF_NEWSIGNALS);
653 u32 u_handler, u_restorer;
655 new_ka.ka_restorer = restorer;
656 ret = get_user(u_handler, &act->sa_handler);
657 new_ka.sa.sa_handler = compat_ptr(u_handler);
658 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
659 switch (_NSIG_WORDS) {
660 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
661 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
662 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
663 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
665 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
666 ret |= __get_user(u_restorer, &act->sa_restorer);
667 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
672 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
675 switch (_NSIG_WORDS) {
676 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
677 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
678 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
679 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
681 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
682 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
683 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
684 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
693 * sparc32_execve() executes a new program after the asm stub has set
694 * things up for us. This should basically do what I want it to.
696 asmlinkage long sparc32_execve(struct pt_regs *regs)
701 /* User register window flush is done by entry.S */
703 /* Check for indirect call. */
704 if ((u32)regs->u_regs[UREG_G1] == 0)
707 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
708 error = PTR_ERR(filename);
709 if (IS_ERR(filename))
712 error = compat_do_execve(filename,
713 compat_ptr(regs->u_regs[base + UREG_I1]),
714 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
720 current_thread_info()->xfsr[0] = 0;
721 current_thread_info()->fpsaved[0] = 0;
722 regs->tstate &= ~TSTATE_PEF;
724 current->ptrace &= ~PT_DTRACE;
725 task_unlock(current);
731 #ifdef CONFIG_MODULES
733 asmlinkage long sys32_init_module(void __user *umod, u32 len,
734 const char __user *uargs)
736 return sys_init_module(umod, len, uargs);
739 asmlinkage long sys32_delete_module(const char __user *name_user,
742 return sys_delete_module(name_user, flags);
745 #else /* CONFIG_MODULES */
747 asmlinkage long sys32_init_module(const char __user *name_user,
748 struct module __user *mod_user)
753 asmlinkage long sys32_delete_module(const char __user *name_user)
758 #endif /* CONFIG_MODULES */
760 /* Translations due to time_t size differences. Which affects all
761 sorts of things, like timeval and itimerval. */
763 extern struct timezone sys_tz;
765 asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv,
766 struct timezone __user *tz)
770 do_gettimeofday(&ktv);
771 if (put_tv32(tv, &ktv))
775 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
781 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
785 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
787 if (__get_user(o->tv_sec, &i->tv_sec))
789 if (__get_user(usec, &i->tv_usec))
791 o->tv_nsec = usec * 1000;
795 asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv,
796 struct timezone __user *tz)
802 if (get_ts32(&kts, tv))
806 if (copy_from_user(&ktz, tz, sizeof(ktz)))
810 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
813 asmlinkage long sys32_utimes(char __user *filename,
814 struct compat_timeval __user *tvs)
816 struct timeval ktvs[2];
819 if (get_tv32(&ktvs[0], tvs) ||
820 get_tv32(&ktvs[1], 1+tvs))
824 return do_utimes(AT_FDCWD, filename, (tvs ? &ktvs[0] : NULL));
827 /* These are here just in case some old sparc32 binary calls it. */
828 asmlinkage long sys32_pause(void)
830 current->state = TASK_INTERRUPTIBLE;
832 return -ERESTARTNOHAND;
835 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
841 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
844 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
850 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
853 asmlinkage long compat_sys_readahead(int fd,
858 return sys_readahead(fd, (offhi << 32) | offlo, count);
861 long compat_sys_fadvise64(int fd,
864 compat_size_t len, int advice)
866 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
869 long compat_sys_fadvise64_64(int fd,
870 unsigned long offhi, unsigned long offlo,
871 unsigned long lenhi, unsigned long lenlo,
874 return sys_fadvise64_64(fd,
875 (offhi << 32) | offlo,
876 (lenhi << 32) | lenlo,
880 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
881 compat_off_t __user *offset,
884 mm_segment_t old_fs = get_fs();
888 if (offset && get_user(of, offset))
892 ret = sys_sendfile(out_fd, in_fd,
893 offset ? (off_t __user *) &of : NULL,
897 if (offset && put_user(of, offset))
903 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
904 compat_loff_t __user *offset,
907 mm_segment_t old_fs = get_fs();
911 if (offset && get_user(lof, offset))
915 ret = sys_sendfile64(out_fd, in_fd,
916 offset ? (loff_t __user *) &lof : NULL,
920 if (offset && put_user(lof, offset))
926 /* Handle adjtimex compatibility. */
930 s32 offset, freq, maxerror, esterror;
931 s32 status, constant, precision, tolerance;
932 struct compat_timeval time;
934 s32 ppsfreq, jitter, shift, stabil;
935 s32 jitcnt, calcnt, errcnt, stbcnt;
936 s32 :32; s32 :32; s32 :32; s32 :32;
937 s32 :32; s32 :32; s32 :32; s32 :32;
938 s32 :32; s32 :32; s32 :32; s32 :32;
941 extern int do_adjtimex(struct timex *);
943 asmlinkage long sys32_adjtimex(struct timex32 __user *utp)
948 memset(&txc, 0, sizeof(struct timex));
950 if (get_user(txc.modes, &utp->modes) ||
951 __get_user(txc.offset, &utp->offset) ||
952 __get_user(txc.freq, &utp->freq) ||
953 __get_user(txc.maxerror, &utp->maxerror) ||
954 __get_user(txc.esterror, &utp->esterror) ||
955 __get_user(txc.status, &utp->status) ||
956 __get_user(txc.constant, &utp->constant) ||
957 __get_user(txc.precision, &utp->precision) ||
958 __get_user(txc.tolerance, &utp->tolerance) ||
959 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
960 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
961 __get_user(txc.tick, &utp->tick) ||
962 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
963 __get_user(txc.jitter, &utp->jitter) ||
964 __get_user(txc.shift, &utp->shift) ||
965 __get_user(txc.stabil, &utp->stabil) ||
966 __get_user(txc.jitcnt, &utp->jitcnt) ||
967 __get_user(txc.calcnt, &utp->calcnt) ||
968 __get_user(txc.errcnt, &utp->errcnt) ||
969 __get_user(txc.stbcnt, &utp->stbcnt))
972 ret = do_adjtimex(&txc);
974 if (put_user(txc.modes, &utp->modes) ||
975 __put_user(txc.offset, &utp->offset) ||
976 __put_user(txc.freq, &utp->freq) ||
977 __put_user(txc.maxerror, &utp->maxerror) ||
978 __put_user(txc.esterror, &utp->esterror) ||
979 __put_user(txc.status, &utp->status) ||
980 __put_user(txc.constant, &utp->constant) ||
981 __put_user(txc.precision, &utp->precision) ||
982 __put_user(txc.tolerance, &utp->tolerance) ||
983 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
984 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
985 __put_user(txc.tick, &utp->tick) ||
986 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
987 __put_user(txc.jitter, &utp->jitter) ||
988 __put_user(txc.shift, &utp->shift) ||
989 __put_user(txc.stabil, &utp->stabil) ||
990 __put_user(txc.jitcnt, &utp->jitcnt) ||
991 __put_user(txc.calcnt, &utp->calcnt) ||
992 __put_user(txc.errcnt, &utp->errcnt) ||
993 __put_user(txc.stbcnt, &utp->stbcnt))
999 /* This is just a version for 32-bit applications which does
1000 * not force O_LARGEFILE on.
1003 asmlinkage long sparc32_open(const char __user *filename,
1004 int flags, int mode)
1006 return do_sys_open(AT_FDCWD, filename, flags, mode);
1009 extern unsigned long do_mremap(unsigned long addr,
1010 unsigned long old_len, unsigned long new_len,
1011 unsigned long flags, unsigned long new_addr);
1013 asmlinkage unsigned long sys32_mremap(unsigned long addr,
1014 unsigned long old_len, unsigned long new_len,
1015 unsigned long flags, u32 __new_addr)
1017 struct vm_area_struct *vma;
1018 unsigned long ret = -EINVAL;
1019 unsigned long new_addr = __new_addr;
1021 if (old_len > 0xf0000000UL || new_len > 0xf0000000UL)
1023 if (addr > 0xf0000000UL - old_len)
1025 down_write(¤t->mm->mmap_sem);
1026 if (flags & MREMAP_FIXED) {
1027 if (new_addr > 0xf0000000UL - new_len)
1029 } else if (addr > 0xf0000000UL - new_len) {
1030 unsigned long map_flags = 0;
1031 struct file *file = NULL;
1034 if (!(flags & MREMAP_MAYMOVE))
1037 vma = find_vma(current->mm, addr);
1039 if (vma->vm_flags & VM_SHARED)
1040 map_flags |= MAP_SHARED;
1041 file = vma->vm_file;
1044 /* MREMAP_FIXED checked above. */
1045 new_addr = get_unmapped_area(file, addr, new_len,
1046 vma ? vma->vm_pgoff : 0,
1049 if (new_addr & ~PAGE_MASK)
1051 flags |= MREMAP_FIXED;
1053 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
1055 up_write(¤t->mm->mmap_sem);
1060 struct __sysctl_args32 {
1070 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
1072 #ifndef CONFIG_SYSCTL
1075 struct __sysctl_args32 tmp;
1077 size_t oldlen, __user *oldlenp = NULL;
1078 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
1080 if (copy_from_user(&tmp, args, sizeof(tmp)))
1083 if (tmp.oldval && tmp.oldlenp) {
1084 /* Duh, this is ugly and might not work if sysctl_args
1085 is in read-only memory, but do_sysctl does indirectly
1086 a lot of uaccess in both directions and we'd have to
1087 basically copy the whole sysctl.c here, and
1088 glibc's __sysctl uses rw memory for the structure
1090 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
1091 put_user(oldlen, (size_t __user *)addr))
1093 oldlenp = (size_t __user *)addr;
1097 error = do_sysctl((int __user *)(unsigned long) tmp.name,
1099 (void __user *)(unsigned long) tmp.oldval,
1101 (void __user *)(unsigned long) tmp.newval,
1106 if (get_user(oldlen, (size_t __user *)addr) ||
1107 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
1110 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
1117 long sys32_lookup_dcookie(unsigned long cookie_high,
1118 unsigned long cookie_low,
1119 char __user *buf, size_t len)
1121 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,