1 /* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
3 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
4 * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
6 * These routines maintain argument size conversion between 32bit and 64bit
10 #include <linux/kernel.h>
11 #include <linux/sched.h>
12 #include <linux/capability.h>
15 #include <linux/file.h>
16 #include <linux/signal.h>
17 #include <linux/resource.h>
18 #include <linux/times.h>
19 #include <linux/utsname.h>
20 #include <linux/smp.h>
21 #include <linux/smp_lock.h>
22 #include <linux/sem.h>
23 #include <linux/msg.h>
24 #include <linux/shm.h>
25 #include <linux/slab.h>
26 #include <linux/uio.h>
27 #include <linux/nfs_fs.h>
28 #include <linux/quota.h>
29 #include <linux/module.h>
30 #include <linux/sunrpc/svc.h>
31 #include <linux/nfsd/nfsd.h>
32 #include <linux/nfsd/cache.h>
33 #include <linux/nfsd/xdr.h>
34 #include <linux/nfsd/syscall.h>
35 #include <linux/poll.h>
36 #include <linux/personality.h>
37 #include <linux/stat.h>
38 #include <linux/filter.h>
39 #include <linux/highmem.h>
40 #include <linux/highuid.h>
41 #include <linux/mman.h>
42 #include <linux/ipv6.h>
44 #include <linux/icmpv6.h>
45 #include <linux/syscalls.h>
46 #include <linux/sysctl.h>
47 #include <linux/binfmts.h>
48 #include <linux/dnotify.h>
49 #include <linux/security.h>
50 #include <linux/compat.h>
51 #include <linux/vfs.h>
52 #include <linux/netfilter_ipv4/ip_tables.h>
53 #include <linux/ptrace.h>
55 #include <asm/types.h>
56 #include <asm/uaccess.h>
57 #include <asm/fpumacro.h>
58 #include <asm/semaphore.h>
59 #include <asm/mmu_context.h>
60 #include <asm/a.out.h>
61 #include <asm/compat_signal.h>
63 asmlinkage long sys32_chown16(const char __user * filename, u16 user, u16 group)
65 return sys_chown(filename, low2highuid(user), low2highgid(group));
68 asmlinkage long sys32_lchown16(const char __user * filename, u16 user, u16 group)
70 return sys_lchown(filename, low2highuid(user), low2highgid(group));
73 asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group)
75 return sys_fchown(fd, low2highuid(user), low2highgid(group));
78 asmlinkage long sys32_setregid16(u16 rgid, u16 egid)
80 return sys_setregid(low2highgid(rgid), low2highgid(egid));
83 asmlinkage long sys32_setgid16(u16 gid)
85 return sys_setgid((gid_t)gid);
88 asmlinkage long sys32_setreuid16(u16 ruid, u16 euid)
90 return sys_setreuid(low2highuid(ruid), low2highuid(euid));
93 asmlinkage long sys32_setuid16(u16 uid)
95 return sys_setuid((uid_t)uid);
98 asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid)
100 return sys_setresuid(low2highuid(ruid), low2highuid(euid),
104 asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user *suid)
108 if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
109 !(retval = put_user(high2lowuid(current->euid), euid)))
110 retval = put_user(high2lowuid(current->suid), suid);
115 asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid)
117 return sys_setresgid(low2highgid(rgid), low2highgid(egid),
121 asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user *sgid)
125 if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
126 !(retval = put_user(high2lowgid(current->egid), egid)))
127 retval = put_user(high2lowgid(current->sgid), sgid);
132 asmlinkage long sys32_setfsuid16(u16 uid)
134 return sys_setfsuid((uid_t)uid);
137 asmlinkage long sys32_setfsgid16(u16 gid)
139 return sys_setfsgid((gid_t)gid);
142 static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info)
147 for (i = 0; i < group_info->ngroups; i++) {
148 group = (u16)GROUP_AT(group_info, i);
149 if (put_user(group, grouplist+i))
156 static int groups16_from_user(struct group_info *group_info, u16 __user *grouplist)
161 for (i = 0; i < group_info->ngroups; i++) {
162 if (get_user(group, grouplist+i))
164 GROUP_AT(group_info, i) = (gid_t)group;
170 asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist)
177 get_group_info(current->group_info);
178 i = current->group_info->ngroups;
180 if (i > gidsetsize) {
184 if (groups16_to_user(grouplist, current->group_info)) {
190 put_group_info(current->group_info);
194 asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist)
196 struct group_info *group_info;
199 if (!capable(CAP_SETGID))
201 if ((unsigned)gidsetsize > NGROUPS_MAX)
204 group_info = groups_alloc(gidsetsize);
207 retval = groups16_from_user(group_info, grouplist);
209 put_group_info(group_info);
213 retval = set_current_groups(group_info);
214 put_group_info(group_info);
219 asmlinkage long sys32_getuid16(void)
221 return high2lowuid(current->uid);
224 asmlinkage long sys32_geteuid16(void)
226 return high2lowuid(current->euid);
229 asmlinkage long sys32_getgid16(void)
231 return high2lowgid(current->gid);
234 asmlinkage long sys32_getegid16(void)
236 return high2lowgid(current->egid);
239 /* 32-bit timeval and related flotsam. */
241 static long get_tv32(struct timeval *o, struct compat_timeval __user *i)
243 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
244 (__get_user(o->tv_sec, &i->tv_sec) |
245 __get_user(o->tv_usec, &i->tv_usec)));
248 static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
250 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
251 (__put_user(i->tv_sec, &o->tv_sec) |
252 __put_user(i->tv_usec, &o->tv_usec)));
255 #ifdef CONFIG_SYSVIPC
256 asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
260 version = call >> 16; /* hack for backward compatibility */
266 /* sign extend semid */
267 return compat_sys_semtimedop((int)first,
268 compat_ptr(ptr), second,
270 /* else fall through for normal semop() */
272 /* struct sembuf is the same on 32 and 64bit :)) */
273 /* sign extend semid */
274 return sys_semtimedop((int)first, compat_ptr(ptr), second,
277 /* sign extend key, nsems */
278 return sys_semget((int)first, (int)second, third);
280 /* sign extend semid, semnum */
281 return compat_sys_semctl((int)first, (int)second, third,
285 /* sign extend msqid */
286 return compat_sys_msgsnd((int)first, (int)second, third,
289 /* sign extend msqid, msgtyp */
290 return compat_sys_msgrcv((int)first, second, (int)fifth,
291 third, version, compat_ptr(ptr));
293 /* sign extend key */
294 return sys_msgget((int)first, second);
296 /* sign extend msqid */
297 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
300 /* sign extend shmid */
301 return compat_sys_shmat((int)first, second, third, version,
304 return sys_shmdt(compat_ptr(ptr));
306 /* sign extend key_t */
307 return sys_shmget((int)first, second, third);
309 /* sign extend shmid */
310 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
320 asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
325 return sys_truncate(path, (high << 32) | low);
328 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
333 return sys_ftruncate(fd, (high << 32) | low);
336 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
341 if (stat->size > MAX_NON_LFS || !old_valid_dev(stat->dev) ||
342 !old_valid_dev(stat->rdev))
346 if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino)
349 err = put_user(old_encode_dev(stat->dev), &statbuf->st_dev);
350 err |= put_user(stat->ino, &statbuf->st_ino);
351 err |= put_user(stat->mode, &statbuf->st_mode);
352 err |= put_user(stat->nlink, &statbuf->st_nlink);
353 err |= put_user(high2lowuid(stat->uid), &statbuf->st_uid);
354 err |= put_user(high2lowgid(stat->gid), &statbuf->st_gid);
355 err |= put_user(old_encode_dev(stat->rdev), &statbuf->st_rdev);
356 err |= put_user(stat->size, &statbuf->st_size);
357 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
358 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
359 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
360 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
361 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
362 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
363 err |= put_user(stat->blksize, &statbuf->st_blksize);
364 err |= put_user(stat->blocks, &statbuf->st_blocks);
365 err |= put_user(0, &statbuf->__unused4[0]);
366 err |= put_user(0, &statbuf->__unused4[1]);
371 int cp_compat_stat64(struct kstat *stat, struct compat_stat64 __user *statbuf)
375 err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
376 err |= put_user(stat->ino, &statbuf->st_ino);
377 err |= put_user(stat->mode, &statbuf->st_mode);
378 err |= put_user(stat->nlink, &statbuf->st_nlink);
379 err |= put_user(stat->uid, &statbuf->st_uid);
380 err |= put_user(stat->gid, &statbuf->st_gid);
381 err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
382 err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
383 err |= put_user(stat->size, &statbuf->st_size);
384 err |= put_user(stat->blksize, &statbuf->st_blksize);
385 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
386 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
387 err |= put_user(stat->blocks, &statbuf->st_blocks);
388 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
389 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
390 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
391 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
392 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
393 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
394 err |= put_user(0, &statbuf->__unused4);
395 err |= put_user(0, &statbuf->__unused5);
400 asmlinkage long compat_sys_stat64(char __user * filename,
401 struct compat_stat64 __user *statbuf)
404 int error = vfs_stat(filename, &stat);
407 error = cp_compat_stat64(&stat, statbuf);
411 asmlinkage long compat_sys_lstat64(char __user * filename,
412 struct compat_stat64 __user *statbuf)
415 int error = vfs_lstat(filename, &stat);
418 error = cp_compat_stat64(&stat, statbuf);
422 asmlinkage long compat_sys_fstat64(unsigned int fd,
423 struct compat_stat64 __user * statbuf)
426 int error = vfs_fstat(fd, &stat);
429 error = cp_compat_stat64(&stat, statbuf);
433 asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename,
434 struct compat_stat64 __user * statbuf, int flag)
439 if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
442 if (flag & AT_SYMLINK_NOFOLLOW)
443 error = vfs_lstat_fd(dfd, filename, &stat);
445 error = vfs_stat_fd(dfd, filename, &stat);
448 error = cp_compat_stat64(&stat, statbuf);
454 asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
456 return sys_sysfs(option, arg1, arg2);
459 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
463 mm_segment_t old_fs = get_fs ();
466 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
468 if (put_compat_timespec(&t, interval))
473 asmlinkage long compat_sys_rt_sigprocmask(int how,
474 compat_sigset_t __user *set,
475 compat_sigset_t __user *oset,
476 compat_size_t sigsetsize)
481 mm_segment_t old_fs = get_fs();
484 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
486 switch (_NSIG_WORDS) {
487 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
488 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
489 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
490 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
494 ret = sys_rt_sigprocmask(how,
495 set ? (sigset_t __user *) &s : NULL,
496 oset ? (sigset_t __user *) &s : NULL,
501 switch (_NSIG_WORDS) {
502 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
503 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
504 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
505 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
507 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
513 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
514 compat_size_t sigsetsize)
519 mm_segment_t old_fs = get_fs();
522 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
525 switch (_NSIG_WORDS) {
526 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
527 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
528 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
529 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
531 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
537 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
538 struct compat_siginfo __user *uinfo)
542 mm_segment_t old_fs = get_fs();
544 if (copy_siginfo_from_user32(&info, uinfo))
548 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
553 asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
554 struct old_sigaction32 __user *oact)
556 struct k_sigaction new_ka, old_ka;
560 set_thread_flag(TIF_NEWSIGNALS);
565 compat_old_sigset_t mask;
566 u32 u_handler, u_restorer;
568 ret = get_user(u_handler, &act->sa_handler);
569 new_ka.sa.sa_handler = compat_ptr(u_handler);
570 ret |= __get_user(u_restorer, &act->sa_restorer);
571 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
572 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
573 ret |= __get_user(mask, &act->sa_mask);
576 new_ka.ka_restorer = NULL;
577 siginitset(&new_ka.sa.sa_mask, mask);
580 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
583 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
584 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
585 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
586 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
592 asmlinkage long compat_sys_rt_sigaction(int sig,
593 struct sigaction32 __user *act,
594 struct sigaction32 __user *oact,
595 void __user *restorer,
596 compat_size_t sigsetsize)
598 struct k_sigaction new_ka, old_ka;
600 compat_sigset_t set32;
602 /* XXX: Don't preclude handling different sized sigset_t's. */
603 if (sigsetsize != sizeof(compat_sigset_t))
606 /* All tasks which use RT signals (effectively) use
609 set_thread_flag(TIF_NEWSIGNALS);
612 u32 u_handler, u_restorer;
614 new_ka.ka_restorer = restorer;
615 ret = get_user(u_handler, &act->sa_handler);
616 new_ka.sa.sa_handler = compat_ptr(u_handler);
617 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
618 switch (_NSIG_WORDS) {
619 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
620 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
621 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
622 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
624 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
625 ret |= __get_user(u_restorer, &act->sa_restorer);
626 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
631 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
634 switch (_NSIG_WORDS) {
635 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
636 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
637 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
638 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
640 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
641 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
642 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
643 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
652 * sparc32_execve() executes a new program after the asm stub has set
653 * things up for us. This should basically do what I want it to.
655 asmlinkage long sparc32_execve(struct pt_regs *regs)
660 /* User register window flush is done by entry.S */
662 /* Check for indirect call. */
663 if ((u32)regs->u_regs[UREG_G1] == 0)
666 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
667 error = PTR_ERR(filename);
668 if (IS_ERR(filename))
671 error = compat_do_execve(filename,
672 compat_ptr(regs->u_regs[base + UREG_I1]),
673 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
679 current_thread_info()->xfsr[0] = 0;
680 current_thread_info()->fpsaved[0] = 0;
681 regs->tstate &= ~TSTATE_PEF;
683 current->ptrace &= ~PT_DTRACE;
684 task_unlock(current);
690 #ifdef CONFIG_MODULES
692 asmlinkage long sys32_init_module(void __user *umod, u32 len,
693 const char __user *uargs)
695 return sys_init_module(umod, len, uargs);
698 asmlinkage long sys32_delete_module(const char __user *name_user,
701 return sys_delete_module(name_user, flags);
704 #else /* CONFIG_MODULES */
706 asmlinkage long sys32_init_module(const char __user *name_user,
707 struct module __user *mod_user)
712 asmlinkage long sys32_delete_module(const char __user *name_user)
717 #endif /* CONFIG_MODULES */
719 /* Translations due to time_t size differences. Which affects all
720 sorts of things, like timeval and itimerval. */
722 extern struct timezone sys_tz;
724 asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv,
725 struct timezone __user *tz)
729 do_gettimeofday(&ktv);
730 if (put_tv32(tv, &ktv))
734 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
740 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
744 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
746 if (__get_user(o->tv_sec, &i->tv_sec))
748 if (__get_user(usec, &i->tv_usec))
750 o->tv_nsec = usec * 1000;
754 asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv,
755 struct timezone __user *tz)
761 if (get_ts32(&kts, tv))
765 if (copy_from_user(&ktz, tz, sizeof(ktz)))
769 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
772 asmlinkage long sys32_utimes(char __user *filename,
773 struct compat_timeval __user *tvs)
775 struct timespec tv[2];
778 struct timeval ktvs[2];
779 if (get_tv32(&ktvs[0], tvs) ||
780 get_tv32(&ktvs[1], 1+tvs))
783 if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 ||
784 ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000)
787 tv[0].tv_sec = ktvs[0].tv_sec;
788 tv[0].tv_nsec = 1000 * ktvs[0].tv_usec;
789 tv[1].tv_sec = ktvs[1].tv_sec;
790 tv[1].tv_nsec = 1000 * ktvs[1].tv_usec;
793 return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0);
796 /* These are here just in case some old sparc32 binary calls it. */
797 asmlinkage long sys32_pause(void)
799 current->state = TASK_INTERRUPTIBLE;
801 return -ERESTARTNOHAND;
804 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
810 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
813 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
819 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
822 asmlinkage long compat_sys_readahead(int fd,
827 return sys_readahead(fd, (offhi << 32) | offlo, count);
830 long compat_sys_fadvise64(int fd,
833 compat_size_t len, int advice)
835 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
838 long compat_sys_fadvise64_64(int fd,
839 unsigned long offhi, unsigned long offlo,
840 unsigned long lenhi, unsigned long lenlo,
843 return sys_fadvise64_64(fd,
844 (offhi << 32) | offlo,
845 (lenhi << 32) | lenlo,
849 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
850 compat_off_t __user *offset,
853 mm_segment_t old_fs = get_fs();
857 if (offset && get_user(of, offset))
861 ret = sys_sendfile(out_fd, in_fd,
862 offset ? (off_t __user *) &of : NULL,
866 if (offset && put_user(of, offset))
872 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
873 compat_loff_t __user *offset,
876 mm_segment_t old_fs = get_fs();
880 if (offset && get_user(lof, offset))
884 ret = sys_sendfile64(out_fd, in_fd,
885 offset ? (loff_t __user *) &lof : NULL,
889 if (offset && put_user(lof, offset))
895 /* This is just a version for 32-bit applications which does
896 * not force O_LARGEFILE on.
899 asmlinkage long sparc32_open(const char __user *filename,
902 return do_sys_open(AT_FDCWD, filename, flags, mode);
905 extern unsigned long do_mremap(unsigned long addr,
906 unsigned long old_len, unsigned long new_len,
907 unsigned long flags, unsigned long new_addr);
909 asmlinkage unsigned long sys32_mremap(unsigned long addr,
910 unsigned long old_len, unsigned long new_len,
911 unsigned long flags, u32 __new_addr)
913 struct vm_area_struct *vma;
914 unsigned long ret = -EINVAL;
915 unsigned long new_addr = __new_addr;
917 if (old_len > STACK_TOP32 || new_len > STACK_TOP32)
919 if (addr > STACK_TOP32 - old_len)
921 down_write(¤t->mm->mmap_sem);
922 if (flags & MREMAP_FIXED) {
923 if (new_addr > STACK_TOP32 - new_len)
925 } else if (addr > STACK_TOP32 - new_len) {
926 unsigned long map_flags = 0;
927 struct file *file = NULL;
930 if (!(flags & MREMAP_MAYMOVE))
933 vma = find_vma(current->mm, addr);
935 if (vma->vm_flags & VM_SHARED)
936 map_flags |= MAP_SHARED;
940 /* MREMAP_FIXED checked above. */
941 new_addr = get_unmapped_area(file, addr, new_len,
942 vma ? vma->vm_pgoff : 0,
945 if (new_addr & ~PAGE_MASK)
947 flags |= MREMAP_FIXED;
949 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
951 up_write(¤t->mm->mmap_sem);
956 struct __sysctl_args32 {
966 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
968 #ifndef CONFIG_SYSCTL_SYSCALL
971 struct __sysctl_args32 tmp;
973 size_t oldlen, __user *oldlenp = NULL;
974 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
976 if (copy_from_user(&tmp, args, sizeof(tmp)))
979 if (tmp.oldval && tmp.oldlenp) {
980 /* Duh, this is ugly and might not work if sysctl_args
981 is in read-only memory, but do_sysctl does indirectly
982 a lot of uaccess in both directions and we'd have to
983 basically copy the whole sysctl.c here, and
984 glibc's __sysctl uses rw memory for the structure
986 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
987 put_user(oldlen, (size_t __user *)addr))
989 oldlenp = (size_t __user *)addr;
993 error = do_sysctl((int __user *)(unsigned long) tmp.name,
995 (void __user *)(unsigned long) tmp.oldval,
997 (void __user *)(unsigned long) tmp.newval,
1002 if (get_user(oldlen, (size_t __user *)addr) ||
1003 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
1006 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
1013 long sys32_lookup_dcookie(unsigned long cookie_high,
1014 unsigned long cookie_low,
1015 char __user *buf, size_t len)
1017 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
1021 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)
1023 return sys_sync_file_range(fd,
1024 (off_high << 32) | off_low,
1025 (nb_high << 32) | nb_low,
1029 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
1030 u32 lenhi, u32 lenlo)
1032 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
1033 ((loff_t)lenhi << 32) | lenlo);