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/kernel.h>
12 #include <linux/sched.h>
13 #include <linux/capability.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/smp.h>
22 #include <linux/smp_lock.h>
23 #include <linux/sem.h>
24 #include <linux/msg.h>
25 #include <linux/shm.h>
26 #include <linux/slab.h>
27 #include <linux/uio.h>
28 #include <linux/nfs_fs.h>
29 #include <linux/quota.h>
30 #include <linux/module.h>
31 #include <linux/sunrpc/svc.h>
32 #include <linux/nfsd/nfsd.h>
33 #include <linux/nfsd/cache.h>
34 #include <linux/nfsd/xdr.h>
35 #include <linux/nfsd/syscall.h>
36 #include <linux/poll.h>
37 #include <linux/personality.h>
38 #include <linux/stat.h>
39 #include <linux/filter.h>
40 #include <linux/highmem.h>
41 #include <linux/highuid.h>
42 #include <linux/mman.h>
43 #include <linux/ipv6.h>
45 #include <linux/icmpv6.h>
46 #include <linux/syscalls.h>
47 #include <linux/sysctl.h>
48 #include <linux/binfmts.h>
49 #include <linux/dnotify.h>
50 #include <linux/security.h>
51 #include <linux/compat.h>
52 #include <linux/vfs.h>
53 #include <linux/netfilter_ipv4/ip_tables.h>
54 #include <linux/ptrace.h>
55 #include <linux/highuid.h>
57 #include <asm/types.h>
59 #include <asm/uaccess.h>
60 #include <asm/fpumacro.h>
61 #include <asm/semaphore.h>
62 #include <asm/mmu_context.h>
63 #include <asm/a.out.h>
64 #include <asm/compat_signal.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)
344 if (stat->size > MAX_NON_LFS || !old_valid_dev(stat->dev) ||
345 !old_valid_dev(stat->rdev))
349 if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino)
352 err = put_user(old_encode_dev(stat->dev), &statbuf->st_dev);
353 err |= put_user(stat->ino, &statbuf->st_ino);
354 err |= put_user(stat->mode, &statbuf->st_mode);
355 err |= put_user(stat->nlink, &statbuf->st_nlink);
356 err |= put_user(high2lowuid(stat->uid), &statbuf->st_uid);
357 err |= put_user(high2lowgid(stat->gid), &statbuf->st_gid);
358 err |= put_user(old_encode_dev(stat->rdev), &statbuf->st_rdev);
359 err |= put_user(stat->size, &statbuf->st_size);
360 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
361 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
362 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
363 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
364 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
365 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
366 err |= put_user(stat->blksize, &statbuf->st_blksize);
367 err |= put_user(stat->blocks, &statbuf->st_blocks);
368 err |= put_user(0, &statbuf->__unused4[0]);
369 err |= put_user(0, &statbuf->__unused4[1]);
374 int cp_compat_stat64(struct kstat *stat, struct compat_stat64 __user *statbuf)
378 err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
379 err |= put_user(stat->ino, &statbuf->st_ino);
380 err |= put_user(stat->mode, &statbuf->st_mode);
381 err |= put_user(stat->nlink, &statbuf->st_nlink);
382 err |= put_user(stat->uid, &statbuf->st_uid);
383 err |= put_user(stat->gid, &statbuf->st_gid);
384 err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
385 err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
386 err |= put_user(stat->size, &statbuf->st_size);
387 err |= put_user(stat->blksize, &statbuf->st_blksize);
388 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
389 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
390 err |= put_user(stat->blocks, &statbuf->st_blocks);
391 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
392 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
393 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
394 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
395 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
396 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
397 err |= put_user(0, &statbuf->__unused4);
398 err |= put_user(0, &statbuf->__unused5);
403 asmlinkage long compat_sys_stat64(char __user * filename,
404 struct compat_stat64 __user *statbuf)
407 int error = vfs_stat(filename, &stat);
410 error = cp_compat_stat64(&stat, statbuf);
414 asmlinkage long compat_sys_lstat64(char __user * filename,
415 struct compat_stat64 __user *statbuf)
418 int error = vfs_lstat(filename, &stat);
421 error = cp_compat_stat64(&stat, statbuf);
425 asmlinkage long compat_sys_fstat64(unsigned int fd,
426 struct compat_stat64 __user * statbuf)
429 int error = vfs_fstat(fd, &stat);
432 error = cp_compat_stat64(&stat, statbuf);
436 asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename,
437 struct compat_stat64 __user * statbuf, int flag)
442 if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
445 if (flag & AT_SYMLINK_NOFOLLOW)
446 error = vfs_lstat_fd(dfd, filename, &stat);
448 error = vfs_stat_fd(dfd, filename, &stat);
451 error = cp_compat_stat64(&stat, statbuf);
457 asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
459 return sys_sysfs(option, arg1, arg2);
462 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
466 mm_segment_t old_fs = get_fs ();
469 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
471 if (put_compat_timespec(&t, interval))
476 asmlinkage long compat_sys_rt_sigprocmask(int how,
477 compat_sigset_t __user *set,
478 compat_sigset_t __user *oset,
479 compat_size_t sigsetsize)
484 mm_segment_t old_fs = get_fs();
487 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
489 switch (_NSIG_WORDS) {
490 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
491 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
492 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
493 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
497 ret = sys_rt_sigprocmask(how,
498 set ? (sigset_t __user *) &s : NULL,
499 oset ? (sigset_t __user *) &s : NULL,
504 switch (_NSIG_WORDS) {
505 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
506 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
507 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
508 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
510 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
516 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
517 compat_size_t sigsetsize)
522 mm_segment_t old_fs = get_fs();
525 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
528 switch (_NSIG_WORDS) {
529 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
530 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
531 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
532 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
534 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
540 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
541 struct compat_siginfo __user *uinfo)
545 mm_segment_t old_fs = get_fs();
547 if (copy_siginfo_from_user32(&info, uinfo))
551 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
556 asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
557 struct old_sigaction32 __user *oact)
559 struct k_sigaction new_ka, old_ka;
563 set_thread_flag(TIF_NEWSIGNALS);
568 compat_old_sigset_t mask;
569 u32 u_handler, u_restorer;
571 ret = get_user(u_handler, &act->sa_handler);
572 new_ka.sa.sa_handler = compat_ptr(u_handler);
573 ret |= __get_user(u_restorer, &act->sa_restorer);
574 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
575 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
576 ret |= __get_user(mask, &act->sa_mask);
579 new_ka.ka_restorer = NULL;
580 siginitset(&new_ka.sa.sa_mask, mask);
583 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
586 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
587 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
588 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
589 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
595 asmlinkage long compat_sys_rt_sigaction(int sig,
596 struct sigaction32 __user *act,
597 struct sigaction32 __user *oact,
598 void __user *restorer,
599 compat_size_t sigsetsize)
601 struct k_sigaction new_ka, old_ka;
603 compat_sigset_t set32;
605 /* XXX: Don't preclude handling different sized sigset_t's. */
606 if (sigsetsize != sizeof(compat_sigset_t))
609 /* All tasks which use RT signals (effectively) use
612 set_thread_flag(TIF_NEWSIGNALS);
615 u32 u_handler, u_restorer;
617 new_ka.ka_restorer = restorer;
618 ret = get_user(u_handler, &act->sa_handler);
619 new_ka.sa.sa_handler = compat_ptr(u_handler);
620 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
621 switch (_NSIG_WORDS) {
622 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
623 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
624 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
625 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
627 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
628 ret |= __get_user(u_restorer, &act->sa_restorer);
629 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
634 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
637 switch (_NSIG_WORDS) {
638 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
639 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
640 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
641 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
643 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
644 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
645 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
646 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
655 * sparc32_execve() executes a new program after the asm stub has set
656 * things up for us. This should basically do what I want it to.
658 asmlinkage long sparc32_execve(struct pt_regs *regs)
663 /* User register window flush is done by entry.S */
665 /* Check for indirect call. */
666 if ((u32)regs->u_regs[UREG_G1] == 0)
669 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
670 error = PTR_ERR(filename);
671 if (IS_ERR(filename))
674 error = compat_do_execve(filename,
675 compat_ptr(regs->u_regs[base + UREG_I1]),
676 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
682 current_thread_info()->xfsr[0] = 0;
683 current_thread_info()->fpsaved[0] = 0;
684 regs->tstate &= ~TSTATE_PEF;
686 current->ptrace &= ~PT_DTRACE;
687 task_unlock(current);
693 #ifdef CONFIG_MODULES
695 asmlinkage long sys32_init_module(void __user *umod, u32 len,
696 const char __user *uargs)
698 return sys_init_module(umod, len, uargs);
701 asmlinkage long sys32_delete_module(const char __user *name_user,
704 return sys_delete_module(name_user, flags);
707 #else /* CONFIG_MODULES */
709 asmlinkage long sys32_init_module(const char __user *name_user,
710 struct module __user *mod_user)
715 asmlinkage long sys32_delete_module(const char __user *name_user)
720 #endif /* CONFIG_MODULES */
722 /* Translations due to time_t size differences. Which affects all
723 sorts of things, like timeval and itimerval. */
725 extern struct timezone sys_tz;
727 asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv,
728 struct timezone __user *tz)
732 do_gettimeofday(&ktv);
733 if (put_tv32(tv, &ktv))
737 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
743 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
747 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
749 if (__get_user(o->tv_sec, &i->tv_sec))
751 if (__get_user(usec, &i->tv_usec))
753 o->tv_nsec = usec * 1000;
757 asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv,
758 struct timezone __user *tz)
764 if (get_ts32(&kts, tv))
768 if (copy_from_user(&ktz, tz, sizeof(ktz)))
772 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
775 asmlinkage long sys32_utimes(char __user *filename,
776 struct compat_timeval __user *tvs)
778 struct timespec tv[2];
781 struct timeval ktvs[2];
782 if (get_tv32(&ktvs[0], tvs) ||
783 get_tv32(&ktvs[1], 1+tvs))
786 if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 ||
787 ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000)
790 tv[0].tv_sec = ktvs[0].tv_sec;
791 tv[0].tv_nsec = 1000 * ktvs[0].tv_usec;
792 tv[1].tv_sec = ktvs[1].tv_sec;
793 tv[1].tv_nsec = 1000 * ktvs[1].tv_usec;
796 return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL);
799 /* These are here just in case some old sparc32 binary calls it. */
800 asmlinkage long sys32_pause(void)
802 current->state = TASK_INTERRUPTIBLE;
804 return -ERESTARTNOHAND;
807 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
813 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
816 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
822 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
825 asmlinkage long compat_sys_readahead(int fd,
830 return sys_readahead(fd, (offhi << 32) | offlo, count);
833 long compat_sys_fadvise64(int fd,
836 compat_size_t len, int advice)
838 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
841 long compat_sys_fadvise64_64(int fd,
842 unsigned long offhi, unsigned long offlo,
843 unsigned long lenhi, unsigned long lenlo,
846 return sys_fadvise64_64(fd,
847 (offhi << 32) | offlo,
848 (lenhi << 32) | lenlo,
852 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
853 compat_off_t __user *offset,
856 mm_segment_t old_fs = get_fs();
860 if (offset && get_user(of, offset))
864 ret = sys_sendfile(out_fd, in_fd,
865 offset ? (off_t __user *) &of : NULL,
869 if (offset && put_user(of, offset))
875 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
876 compat_loff_t __user *offset,
879 mm_segment_t old_fs = get_fs();
883 if (offset && get_user(lof, offset))
887 ret = sys_sendfile64(out_fd, in_fd,
888 offset ? (loff_t __user *) &lof : NULL,
892 if (offset && put_user(lof, offset))
898 /* This is just a version for 32-bit applications which does
899 * not force O_LARGEFILE on.
902 asmlinkage long sparc32_open(const char __user *filename,
905 return do_sys_open(AT_FDCWD, filename, flags, mode);
908 extern unsigned long do_mremap(unsigned long addr,
909 unsigned long old_len, unsigned long new_len,
910 unsigned long flags, unsigned long new_addr);
912 asmlinkage unsigned long sys32_mremap(unsigned long addr,
913 unsigned long old_len, unsigned long new_len,
914 unsigned long flags, u32 __new_addr)
916 struct vm_area_struct *vma;
917 unsigned long ret = -EINVAL;
918 unsigned long new_addr = __new_addr;
920 if (old_len > STACK_TOP32 || new_len > STACK_TOP32)
922 if (addr > STACK_TOP32 - old_len)
924 down_write(¤t->mm->mmap_sem);
925 if (flags & MREMAP_FIXED) {
926 if (new_addr > STACK_TOP32 - new_len)
928 } else if (addr > STACK_TOP32 - new_len) {
929 unsigned long map_flags = 0;
930 struct file *file = NULL;
933 if (!(flags & MREMAP_MAYMOVE))
936 vma = find_vma(current->mm, addr);
938 if (vma->vm_flags & VM_SHARED)
939 map_flags |= MAP_SHARED;
943 /* MREMAP_FIXED checked above. */
944 new_addr = get_unmapped_area(file, addr, new_len,
945 vma ? vma->vm_pgoff : 0,
948 if (new_addr & ~PAGE_MASK)
950 flags |= MREMAP_FIXED;
952 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
954 up_write(¤t->mm->mmap_sem);
959 struct __sysctl_args32 {
969 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
971 #ifndef CONFIG_SYSCTL_SYSCALL
974 struct __sysctl_args32 tmp;
976 size_t oldlen, __user *oldlenp = NULL;
977 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
979 if (copy_from_user(&tmp, args, sizeof(tmp)))
982 if (tmp.oldval && tmp.oldlenp) {
983 /* Duh, this is ugly and might not work if sysctl_args
984 is in read-only memory, but do_sysctl does indirectly
985 a lot of uaccess in both directions and we'd have to
986 basically copy the whole sysctl.c here, and
987 glibc's __sysctl uses rw memory for the structure
989 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
990 put_user(oldlen, (size_t __user *)addr))
992 oldlenp = (size_t __user *)addr;
996 error = do_sysctl((int __user *)(unsigned long) tmp.name,
998 (void __user *)(unsigned long) tmp.oldval,
1000 (void __user *)(unsigned long) tmp.newval,
1005 if (get_user(oldlen, (size_t __user *)addr) ||
1006 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
1009 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
1016 long sys32_lookup_dcookie(unsigned long cookie_high,
1017 unsigned long cookie_low,
1018 char __user *buf, size_t len)
1020 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
1024 long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags)
1026 return sys_sync_file_range(fd,
1027 (off_high << 32) | off_low,
1028 (nb_high << 32) | nb_low,