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/mmu_context.h>
59 #include <asm/compat_signal.h>
61 asmlinkage long sys32_chown16(const char __user * filename, u16 user, u16 group)
63 return sys_chown(filename, low2highuid(user), low2highgid(group));
66 asmlinkage long sys32_lchown16(const char __user * filename, u16 user, u16 group)
68 return sys_lchown(filename, low2highuid(user), low2highgid(group));
71 asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group)
73 return sys_fchown(fd, low2highuid(user), low2highgid(group));
76 asmlinkage long sys32_setregid16(u16 rgid, u16 egid)
78 return sys_setregid(low2highgid(rgid), low2highgid(egid));
81 asmlinkage long sys32_setgid16(u16 gid)
83 return sys_setgid((gid_t)gid);
86 asmlinkage long sys32_setreuid16(u16 ruid, u16 euid)
88 return sys_setreuid(low2highuid(ruid), low2highuid(euid));
91 asmlinkage long sys32_setuid16(u16 uid)
93 return sys_setuid((uid_t)uid);
96 asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid)
98 return sys_setresuid(low2highuid(ruid), low2highuid(euid),
102 asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user *suid)
106 if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
107 !(retval = put_user(high2lowuid(current->euid), euid)))
108 retval = put_user(high2lowuid(current->suid), suid);
113 asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid)
115 return sys_setresgid(low2highgid(rgid), low2highgid(egid),
119 asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user *sgid)
123 if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
124 !(retval = put_user(high2lowgid(current->egid), egid)))
125 retval = put_user(high2lowgid(current->sgid), sgid);
130 asmlinkage long sys32_setfsuid16(u16 uid)
132 return sys_setfsuid((uid_t)uid);
135 asmlinkage long sys32_setfsgid16(u16 gid)
137 return sys_setfsgid((gid_t)gid);
140 static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info)
145 for (i = 0; i < group_info->ngroups; i++) {
146 group = (u16)GROUP_AT(group_info, i);
147 if (put_user(group, grouplist+i))
154 static int groups16_from_user(struct group_info *group_info, u16 __user *grouplist)
159 for (i = 0; i < group_info->ngroups; i++) {
160 if (get_user(group, grouplist+i))
162 GROUP_AT(group_info, i) = (gid_t)group;
168 asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist)
175 get_group_info(current->group_info);
176 i = current->group_info->ngroups;
178 if (i > gidsetsize) {
182 if (groups16_to_user(grouplist, current->group_info)) {
188 put_group_info(current->group_info);
192 asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist)
194 struct group_info *group_info;
197 if (!capable(CAP_SETGID))
199 if ((unsigned)gidsetsize > NGROUPS_MAX)
202 group_info = groups_alloc(gidsetsize);
205 retval = groups16_from_user(group_info, grouplist);
207 put_group_info(group_info);
211 retval = set_current_groups(group_info);
212 put_group_info(group_info);
217 asmlinkage long sys32_getuid16(void)
219 return high2lowuid(current->uid);
222 asmlinkage long sys32_geteuid16(void)
224 return high2lowuid(current->euid);
227 asmlinkage long sys32_getgid16(void)
229 return high2lowgid(current->gid);
232 asmlinkage long sys32_getegid16(void)
234 return high2lowgid(current->egid);
237 /* 32-bit timeval and related flotsam. */
239 static long get_tv32(struct timeval *o, struct compat_timeval __user *i)
241 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
242 (__get_user(o->tv_sec, &i->tv_sec) |
243 __get_user(o->tv_usec, &i->tv_usec)));
246 static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
248 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
249 (__put_user(i->tv_sec, &o->tv_sec) |
250 __put_user(i->tv_usec, &o->tv_usec)));
253 #ifdef CONFIG_SYSVIPC
254 asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
258 version = call >> 16; /* hack for backward compatibility */
264 /* sign extend semid */
265 return compat_sys_semtimedop((int)first,
266 compat_ptr(ptr), second,
268 /* else fall through for normal semop() */
270 /* struct sembuf is the same on 32 and 64bit :)) */
271 /* sign extend semid */
272 return sys_semtimedop((int)first, compat_ptr(ptr), second,
275 /* sign extend key, nsems */
276 return sys_semget((int)first, (int)second, third);
278 /* sign extend semid, semnum */
279 return compat_sys_semctl((int)first, (int)second, third,
283 /* sign extend msqid */
284 return compat_sys_msgsnd((int)first, (int)second, third,
287 /* sign extend msqid, msgtyp */
288 return compat_sys_msgrcv((int)first, second, (int)fifth,
289 third, version, compat_ptr(ptr));
291 /* sign extend key */
292 return sys_msgget((int)first, second);
294 /* sign extend msqid */
295 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
298 /* sign extend shmid */
299 return compat_sys_shmat((int)first, second, third, version,
302 return sys_shmdt(compat_ptr(ptr));
304 /* sign extend key_t */
305 return sys_shmget((int)first, second, third);
307 /* sign extend shmid */
308 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
318 asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
323 return sys_truncate(path, (high << 32) | low);
326 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
331 return sys_ftruncate(fd, (high << 32) | low);
334 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
339 if (stat->size > MAX_NON_LFS || !old_valid_dev(stat->dev) ||
340 !old_valid_dev(stat->rdev))
344 if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino)
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_fstatat64(unsigned int dfd, char __user *filename,
432 struct compat_stat64 __user * statbuf, int flag)
437 if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
440 if (flag & AT_SYMLINK_NOFOLLOW)
441 error = vfs_lstat_fd(dfd, filename, &stat);
443 error = vfs_stat_fd(dfd, filename, &stat);
446 error = cp_compat_stat64(&stat, statbuf);
452 asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
454 return sys_sysfs(option, arg1, arg2);
457 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
461 mm_segment_t old_fs = get_fs ();
464 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
466 if (put_compat_timespec(&t, interval))
471 asmlinkage long compat_sys_rt_sigprocmask(int how,
472 compat_sigset_t __user *set,
473 compat_sigset_t __user *oset,
474 compat_size_t sigsetsize)
479 mm_segment_t old_fs = get_fs();
482 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
484 switch (_NSIG_WORDS) {
485 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
486 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
487 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
488 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
492 ret = sys_rt_sigprocmask(how,
493 set ? (sigset_t __user *) &s : NULL,
494 oset ? (sigset_t __user *) &s : NULL,
499 switch (_NSIG_WORDS) {
500 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
501 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
502 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
503 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
505 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
511 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
512 compat_size_t sigsetsize)
517 mm_segment_t old_fs = get_fs();
520 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
523 switch (_NSIG_WORDS) {
524 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
525 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
526 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
527 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
529 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
535 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
536 struct compat_siginfo __user *uinfo)
540 mm_segment_t old_fs = get_fs();
542 if (copy_siginfo_from_user32(&info, uinfo))
546 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
551 asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
552 struct old_sigaction32 __user *oact)
554 struct k_sigaction new_ka, old_ka;
558 set_thread_flag(TIF_NEWSIGNALS);
563 compat_old_sigset_t mask;
564 u32 u_handler, u_restorer;
566 ret = get_user(u_handler, &act->sa_handler);
567 new_ka.sa.sa_handler = compat_ptr(u_handler);
568 ret |= __get_user(u_restorer, &act->sa_restorer);
569 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
570 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
571 ret |= __get_user(mask, &act->sa_mask);
574 new_ka.ka_restorer = NULL;
575 siginitset(&new_ka.sa.sa_mask, mask);
578 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
581 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
582 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
583 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
584 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
590 asmlinkage long compat_sys_rt_sigaction(int sig,
591 struct sigaction32 __user *act,
592 struct sigaction32 __user *oact,
593 void __user *restorer,
594 compat_size_t sigsetsize)
596 struct k_sigaction new_ka, old_ka;
598 compat_sigset_t set32;
600 /* XXX: Don't preclude handling different sized sigset_t's. */
601 if (sigsetsize != sizeof(compat_sigset_t))
604 /* All tasks which use RT signals (effectively) use
607 set_thread_flag(TIF_NEWSIGNALS);
610 u32 u_handler, u_restorer;
612 new_ka.ka_restorer = restorer;
613 ret = get_user(u_handler, &act->sa_handler);
614 new_ka.sa.sa_handler = compat_ptr(u_handler);
615 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
616 switch (_NSIG_WORDS) {
617 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
618 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
619 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
620 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
622 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
623 ret |= __get_user(u_restorer, &act->sa_restorer);
624 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
629 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
632 switch (_NSIG_WORDS) {
633 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
634 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
635 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
636 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
638 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
639 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
640 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
641 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
650 * sparc32_execve() executes a new program after the asm stub has set
651 * things up for us. This should basically do what I want it to.
653 asmlinkage long sparc32_execve(struct pt_regs *regs)
658 /* User register window flush is done by entry.S */
660 /* Check for indirect call. */
661 if ((u32)regs->u_regs[UREG_G1] == 0)
664 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
665 error = PTR_ERR(filename);
666 if (IS_ERR(filename))
669 error = compat_do_execve(filename,
670 compat_ptr(regs->u_regs[base + UREG_I1]),
671 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
677 current_thread_info()->xfsr[0] = 0;
678 current_thread_info()->fpsaved[0] = 0;
679 regs->tstate &= ~TSTATE_PEF;
685 #ifdef CONFIG_MODULES
687 asmlinkage long sys32_init_module(void __user *umod, u32 len,
688 const char __user *uargs)
690 return sys_init_module(umod, len, uargs);
693 asmlinkage long sys32_delete_module(const char __user *name_user,
696 return sys_delete_module(name_user, flags);
699 #else /* CONFIG_MODULES */
701 asmlinkage long sys32_init_module(const char __user *name_user,
702 struct module __user *mod_user)
707 asmlinkage long sys32_delete_module(const char __user *name_user)
712 #endif /* CONFIG_MODULES */
714 /* Translations due to time_t size differences. Which affects all
715 sorts of things, like timeval and itimerval. */
717 extern struct timezone sys_tz;
719 asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv,
720 struct timezone __user *tz)
724 do_gettimeofday(&ktv);
725 if (put_tv32(tv, &ktv))
729 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
735 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
739 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
741 if (__get_user(o->tv_sec, &i->tv_sec))
743 if (__get_user(usec, &i->tv_usec))
745 o->tv_nsec = usec * 1000;
749 asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv,
750 struct timezone __user *tz)
756 if (get_ts32(&kts, tv))
760 if (copy_from_user(&ktz, tz, sizeof(ktz)))
764 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
767 asmlinkage long sys32_utimes(char __user *filename,
768 struct compat_timeval __user *tvs)
770 struct timespec tv[2];
773 struct timeval ktvs[2];
774 if (get_tv32(&ktvs[0], tvs) ||
775 get_tv32(&ktvs[1], 1+tvs))
778 if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 ||
779 ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000)
782 tv[0].tv_sec = ktvs[0].tv_sec;
783 tv[0].tv_nsec = 1000 * ktvs[0].tv_usec;
784 tv[1].tv_sec = ktvs[1].tv_sec;
785 tv[1].tv_nsec = 1000 * ktvs[1].tv_usec;
788 return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0);
791 /* These are here just in case some old sparc32 binary calls it. */
792 asmlinkage long sys32_pause(void)
794 current->state = TASK_INTERRUPTIBLE;
796 return -ERESTARTNOHAND;
799 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
805 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
808 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
814 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
817 asmlinkage long compat_sys_readahead(int fd,
822 return sys_readahead(fd, (offhi << 32) | offlo, count);
825 long compat_sys_fadvise64(int fd,
828 compat_size_t len, int advice)
830 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
833 long compat_sys_fadvise64_64(int fd,
834 unsigned long offhi, unsigned long offlo,
835 unsigned long lenhi, unsigned long lenlo,
838 return sys_fadvise64_64(fd,
839 (offhi << 32) | offlo,
840 (lenhi << 32) | lenlo,
844 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
845 compat_off_t __user *offset,
848 mm_segment_t old_fs = get_fs();
852 if (offset && get_user(of, offset))
856 ret = sys_sendfile(out_fd, in_fd,
857 offset ? (off_t __user *) &of : NULL,
861 if (offset && put_user(of, offset))
867 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
868 compat_loff_t __user *offset,
871 mm_segment_t old_fs = get_fs();
875 if (offset && get_user(lof, offset))
879 ret = sys_sendfile64(out_fd, in_fd,
880 offset ? (loff_t __user *) &lof : NULL,
884 if (offset && put_user(lof, offset))
890 /* This is just a version for 32-bit applications which does
891 * not force O_LARGEFILE on.
894 asmlinkage long sparc32_open(const char __user *filename,
897 return do_sys_open(AT_FDCWD, filename, flags, mode);
900 extern unsigned long do_mremap(unsigned long addr,
901 unsigned long old_len, unsigned long new_len,
902 unsigned long flags, unsigned long new_addr);
904 asmlinkage unsigned long sys32_mremap(unsigned long addr,
905 unsigned long old_len, unsigned long new_len,
906 unsigned long flags, u32 __new_addr)
908 struct vm_area_struct *vma;
909 unsigned long ret = -EINVAL;
910 unsigned long new_addr = __new_addr;
912 if (old_len > STACK_TOP32 || new_len > STACK_TOP32)
914 if (addr > STACK_TOP32 - old_len)
916 down_write(¤t->mm->mmap_sem);
917 if (flags & MREMAP_FIXED) {
918 if (new_addr > STACK_TOP32 - new_len)
920 } else if (addr > STACK_TOP32 - new_len) {
921 unsigned long map_flags = 0;
922 struct file *file = NULL;
925 if (!(flags & MREMAP_MAYMOVE))
928 vma = find_vma(current->mm, addr);
930 if (vma->vm_flags & VM_SHARED)
931 map_flags |= MAP_SHARED;
935 /* MREMAP_FIXED checked above. */
936 new_addr = get_unmapped_area(file, addr, new_len,
937 vma ? vma->vm_pgoff : 0,
940 if (new_addr & ~PAGE_MASK)
942 flags |= MREMAP_FIXED;
944 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
946 up_write(¤t->mm->mmap_sem);
951 struct __sysctl_args32 {
961 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
963 #ifndef CONFIG_SYSCTL_SYSCALL
966 struct __sysctl_args32 tmp;
968 size_t oldlen, __user *oldlenp = NULL;
969 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
971 if (copy_from_user(&tmp, args, sizeof(tmp)))
974 if (tmp.oldval && tmp.oldlenp) {
975 /* Duh, this is ugly and might not work if sysctl_args
976 is in read-only memory, but do_sysctl does indirectly
977 a lot of uaccess in both directions and we'd have to
978 basically copy the whole sysctl.c here, and
979 glibc's __sysctl uses rw memory for the structure
981 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
982 put_user(oldlen, (size_t __user *)addr))
984 oldlenp = (size_t __user *)addr;
988 error = do_sysctl((int __user *)(unsigned long) tmp.name,
990 (void __user *)(unsigned long) tmp.oldval,
992 (void __user *)(unsigned long) tmp.newval,
997 if (get_user(oldlen, (size_t __user *)addr) ||
998 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
1001 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
1008 long sys32_lookup_dcookie(unsigned long cookie_high,
1009 unsigned long cookie_low,
1010 char __user *buf, size_t len)
1012 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
1016 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)
1018 return sys_sync_file_range(fd,
1019 (off_high << 32) | off_low,
1020 (nb_high << 32) | nb_low,
1024 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
1025 u32 lenhi, u32 lenlo)
1027 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
1028 ((loff_t)lenhi << 32) | lenlo);