2 * sys_ia32.c: Conversion between 32bit and 64bit native syscalls. Based on
5 * Copyright (C) 2000 VA Linux Co
6 * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
7 * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
8 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
9 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
10 * Copyright (C) 2000 Hewlett-Packard Co.
11 * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
12 * Copyright (C) 2000,2001,2002 Andi Kleen, SuSE Labs (x86-64 port)
14 * These routines maintain argument size conversion between 32bit and 64bit
15 * environment. In 2.5 most of this should be moved to a generic directory.
17 * This file assumes that there is a hole at the end of user address space.
19 * Some of the functions are LE specific currently. These are
20 * hopefully all marked. This should be fixed.
23 #include <linux/kernel.h>
24 #include <linux/sched.h>
26 #include <linux/file.h>
27 #include <linux/signal.h>
28 #include <linux/syscalls.h>
29 #include <linux/resource.h>
30 #include <linux/times.h>
31 #include <linux/utsname.h>
32 #include <linux/smp.h>
33 #include <linux/smp_lock.h>
34 #include <linux/sem.h>
35 #include <linux/msg.h>
37 #include <linux/shm.h>
38 #include <linux/slab.h>
39 #include <linux/uio.h>
40 #include <linux/nfs_fs.h>
41 #include <linux/quota.h>
42 #include <linux/module.h>
43 #include <linux/sunrpc/svc.h>
44 #include <linux/nfsd/nfsd.h>
45 #include <linux/nfsd/cache.h>
46 #include <linux/nfsd/xdr.h>
47 #include <linux/nfsd/syscall.h>
48 #include <linux/poll.h>
49 #include <linux/personality.h>
50 #include <linux/stat.h>
51 #include <linux/ipc.h>
52 #include <linux/rwsem.h>
53 #include <linux/binfmts.h>
54 #include <linux/init.h>
55 #include <linux/aio_abi.h>
56 #include <linux/aio.h>
57 #include <linux/compat.h>
58 #include <linux/vfs.h>
59 #include <linux/ptrace.h>
60 #include <linux/highuid.h>
61 #include <linux/vmalloc.h>
62 #include <linux/fsnotify.h>
63 #include <linux/sysctl.h>
65 #include <asm/types.h>
66 #include <asm/uaccess.h>
67 #include <asm/semaphore.h>
68 #include <asm/atomic.h>
75 #define AA(__x) ((unsigned long)(__x))
77 int cp_compat_stat(struct kstat *kbuf, struct compat_stat __user *ubuf)
81 typeof(ubuf->st_uid) uid = 0;
82 typeof(ubuf->st_gid) gid = 0;
83 SET_UID(uid, kbuf->uid);
84 SET_GID(gid, kbuf->gid);
85 if (!old_valid_dev(kbuf->dev) || !old_valid_dev(kbuf->rdev))
87 if (kbuf->size >= 0x7fffffff)
90 if (sizeof(ino) < sizeof(kbuf->ino) && ino != kbuf->ino)
92 if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct compat_stat)) ||
93 __put_user(old_encode_dev(kbuf->dev), &ubuf->st_dev) ||
94 __put_user(ino, &ubuf->st_ino) ||
95 __put_user(kbuf->mode, &ubuf->st_mode) ||
96 __put_user(kbuf->nlink, &ubuf->st_nlink) ||
97 __put_user(uid, &ubuf->st_uid) ||
98 __put_user(gid, &ubuf->st_gid) ||
99 __put_user(old_encode_dev(kbuf->rdev), &ubuf->st_rdev) ||
100 __put_user(kbuf->size, &ubuf->st_size) ||
101 __put_user(kbuf->atime.tv_sec, &ubuf->st_atime) ||
102 __put_user(kbuf->atime.tv_nsec, &ubuf->st_atime_nsec) ||
103 __put_user(kbuf->mtime.tv_sec, &ubuf->st_mtime) ||
104 __put_user(kbuf->mtime.tv_nsec, &ubuf->st_mtime_nsec) ||
105 __put_user(kbuf->ctime.tv_sec, &ubuf->st_ctime) ||
106 __put_user(kbuf->ctime.tv_nsec, &ubuf->st_ctime_nsec) ||
107 __put_user(kbuf->blksize, &ubuf->st_blksize) ||
108 __put_user(kbuf->blocks, &ubuf->st_blocks))
113 asmlinkage long sys32_truncate64(char __user *filename,
114 unsigned long offset_low,
115 unsigned long offset_high)
117 return sys_truncate(filename, ((loff_t) offset_high << 32) | offset_low);
120 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long offset_low,
121 unsigned long offset_high)
123 return sys_ftruncate(fd, ((loff_t) offset_high << 32) | offset_low);
127 * Another set for IA32/LFS -- x86_64 struct stat is different due to
128 * support for 64bit inode numbers.
130 static int cp_stat64(struct stat64 __user *ubuf, struct kstat *stat)
132 typeof(ubuf->st_uid) uid = 0;
133 typeof(ubuf->st_gid) gid = 0;
134 SET_UID(uid, stat->uid);
135 SET_GID(gid, stat->gid);
136 if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) ||
137 __put_user(huge_encode_dev(stat->dev), &ubuf->st_dev) ||
138 __put_user(stat->ino, &ubuf->__st_ino) ||
139 __put_user(stat->ino, &ubuf->st_ino) ||
140 __put_user(stat->mode, &ubuf->st_mode) ||
141 __put_user(stat->nlink, &ubuf->st_nlink) ||
142 __put_user(uid, &ubuf->st_uid) ||
143 __put_user(gid, &ubuf->st_gid) ||
144 __put_user(huge_encode_dev(stat->rdev), &ubuf->st_rdev) ||
145 __put_user(stat->size, &ubuf->st_size) ||
146 __put_user(stat->atime.tv_sec, &ubuf->st_atime) ||
147 __put_user(stat->atime.tv_nsec, &ubuf->st_atime_nsec) ||
148 __put_user(stat->mtime.tv_sec, &ubuf->st_mtime) ||
149 __put_user(stat->mtime.tv_nsec, &ubuf->st_mtime_nsec) ||
150 __put_user(stat->ctime.tv_sec, &ubuf->st_ctime) ||
151 __put_user(stat->ctime.tv_nsec, &ubuf->st_ctime_nsec) ||
152 __put_user(stat->blksize, &ubuf->st_blksize) ||
153 __put_user(stat->blocks, &ubuf->st_blocks))
158 asmlinkage long sys32_stat64(char __user *filename,
159 struct stat64 __user *statbuf)
162 int ret = vfs_stat(filename, &stat);
165 ret = cp_stat64(statbuf, &stat);
169 asmlinkage long sys32_lstat64(char __user *filename,
170 struct stat64 __user *statbuf)
173 int ret = vfs_lstat(filename, &stat);
175 ret = cp_stat64(statbuf, &stat);
179 asmlinkage long sys32_fstat64(unsigned int fd, struct stat64 __user *statbuf)
182 int ret = vfs_fstat(fd, &stat);
184 ret = cp_stat64(statbuf, &stat);
188 asmlinkage long sys32_fstatat(unsigned int dfd, char __user *filename,
189 struct stat64 __user *statbuf, int flag)
194 if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
197 if (flag & AT_SYMLINK_NOFOLLOW)
198 error = vfs_lstat_fd(dfd, filename, &stat);
200 error = vfs_stat_fd(dfd, filename, &stat);
203 error = cp_stat64(statbuf, &stat);
210 * Linux/i386 didn't use to be able to handle more than
211 * 4 system call parameters, so these system calls used a memory
212 * block for parameter passing..
215 struct mmap_arg_struct {
224 asmlinkage long sys32_mmap(struct mmap_arg_struct __user *arg)
226 struct mmap_arg_struct a;
227 struct file *file = NULL;
228 unsigned long retval;
229 struct mm_struct *mm ;
231 if (copy_from_user(&a, arg, sizeof(a)))
234 if (a.offset & ~PAGE_MASK)
237 if (!(a.flags & MAP_ANONYMOUS)) {
244 down_write(&mm->mmap_sem);
245 retval = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags,
246 a.offset>>PAGE_SHIFT);
250 up_write(&mm->mmap_sem);
255 asmlinkage long sys32_mprotect(unsigned long start, size_t len,
258 return sys_mprotect(start, len, prot);
261 asmlinkage long sys32_pipe(int __user *fd)
266 retval = do_pipe(fds);
269 if (copy_to_user(fd, fds, sizeof(fds)))
275 asmlinkage long sys32_rt_sigaction(int sig, struct sigaction32 __user *act,
276 struct sigaction32 __user *oact,
277 unsigned int sigsetsize)
279 struct k_sigaction new_ka, old_ka;
281 compat_sigset_t set32;
283 /* XXX: Don't preclude handling different sized sigset_t's. */
284 if (sigsetsize != sizeof(compat_sigset_t))
288 compat_uptr_t handler, restorer;
290 if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
291 __get_user(handler, &act->sa_handler) ||
292 __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
293 __get_user(restorer, &act->sa_restorer) ||
294 __copy_from_user(&set32, &act->sa_mask,
295 sizeof(compat_sigset_t)))
297 new_ka.sa.sa_handler = compat_ptr(handler);
298 new_ka.sa.sa_restorer = compat_ptr(restorer);
301 * FIXME: here we rely on _COMPAT_NSIG_WORS to be >=
302 * than _NSIG_WORDS << 1
304 switch (_NSIG_WORDS) {
305 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6]
306 | (((long)set32.sig[7]) << 32);
307 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4]
308 | (((long)set32.sig[5]) << 32);
309 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2]
310 | (((long)set32.sig[3]) << 32);
311 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0]
312 | (((long)set32.sig[1]) << 32);
316 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
320 * FIXME: here we rely on _COMPAT_NSIG_WORS to be >=
321 * than _NSIG_WORDS << 1
323 switch (_NSIG_WORDS) {
325 set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32);
326 set32.sig[6] = old_ka.sa.sa_mask.sig[3];
328 set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32);
329 set32.sig[4] = old_ka.sa.sa_mask.sig[2];
331 set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32);
332 set32.sig[2] = old_ka.sa.sa_mask.sig[1];
334 set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32);
335 set32.sig[0] = old_ka.sa.sa_mask.sig[0];
337 if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
338 __put_user(ptr_to_compat(old_ka.sa.sa_handler),
339 &oact->sa_handler) ||
340 __put_user(ptr_to_compat(old_ka.sa.sa_restorer),
341 &oact->sa_restorer) ||
342 __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
343 __copy_to_user(&oact->sa_mask, &set32,
344 sizeof(compat_sigset_t)))
351 asmlinkage long sys32_sigaction(int sig, struct old_sigaction32 __user *act,
352 struct old_sigaction32 __user *oact)
354 struct k_sigaction new_ka, old_ka;
358 compat_old_sigset_t mask;
359 compat_uptr_t handler, restorer;
361 if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
362 __get_user(handler, &act->sa_handler) ||
363 __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
364 __get_user(restorer, &act->sa_restorer) ||
365 __get_user(mask, &act->sa_mask))
368 new_ka.sa.sa_handler = compat_ptr(handler);
369 new_ka.sa.sa_restorer = compat_ptr(restorer);
371 siginitset(&new_ka.sa.sa_mask, mask);
374 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
377 if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
378 __put_user(ptr_to_compat(old_ka.sa.sa_handler),
379 &oact->sa_handler) ||
380 __put_user(ptr_to_compat(old_ka.sa.sa_restorer),
381 &oact->sa_restorer) ||
382 __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
383 __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
390 asmlinkage long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
391 compat_sigset_t __user *oset,
392 unsigned int sigsetsize)
397 mm_segment_t old_fs = get_fs();
400 if (copy_from_user(&s32, set, sizeof(compat_sigset_t)))
402 switch (_NSIG_WORDS) {
403 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
404 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
405 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
406 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
410 ret = sys_rt_sigprocmask(how,
411 set ? (sigset_t __user *)&s : NULL,
412 oset ? (sigset_t __user *)&s : NULL,
418 switch (_NSIG_WORDS) {
419 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
420 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
421 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
422 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
424 if (copy_to_user(oset, &s32, sizeof(compat_sigset_t)))
430 static inline long get_tv32(struct timeval *o, struct compat_timeval __user *i)
434 if (access_ok(VERIFY_READ, i, sizeof(*i))) {
435 err = __get_user(o->tv_sec, &i->tv_sec);
436 err |= __get_user(o->tv_usec, &i->tv_usec);
441 static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
445 if (access_ok(VERIFY_WRITE, o, sizeof(*o))) {
446 err = __put_user(i->tv_sec, &o->tv_sec);
447 err |= __put_user(i->tv_usec, &o->tv_usec);
452 asmlinkage long sys32_alarm(unsigned int seconds)
454 return alarm_setitimer(seconds);
458 * Translations due to time_t size differences. Which affects all
459 * sorts of things, like timeval and itimerval.
461 asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv,
462 struct timezone __user *tz)
467 do_gettimeofday(&ktv);
468 if (put_tv32(tv, &ktv))
472 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
478 asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv,
479 struct timezone __user *tz)
486 if (get_tv32(&ktv, tv))
488 kts.tv_sec = ktv.tv_sec;
489 kts.tv_nsec = ktv.tv_usec * NSEC_PER_USEC;
492 if (copy_from_user(&ktz, tz, sizeof(ktz)))
496 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
499 struct sel_arg_struct {
507 asmlinkage long sys32_old_select(struct sel_arg_struct __user *arg)
509 struct sel_arg_struct a;
511 if (copy_from_user(&a, arg, sizeof(a)))
513 return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp),
514 compat_ptr(a.exp), compat_ptr(a.tvp));
517 asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr,
520 return compat_sys_wait4(pid, stat_addr, options, NULL);
523 /* 32-bit timeval and related flotsam. */
525 asmlinkage long sys32_sysfs(int option, u32 arg1, u32 arg2)
527 return sys_sysfs(option, arg1, arg2);
530 asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid,
531 struct compat_timespec __user *interval)
535 mm_segment_t old_fs = get_fs();
538 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
540 if (put_compat_timespec(&t, interval))
545 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
546 compat_size_t sigsetsize)
551 mm_segment_t old_fs = get_fs();
554 ret = sys_rt_sigpending((sigset_t __user *)&s, sigsetsize);
557 switch (_NSIG_WORDS) {
558 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
559 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
560 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
561 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
563 if (copy_to_user(set, &s32, sizeof(compat_sigset_t)))
569 asmlinkage long sys32_rt_sigqueueinfo(int pid, int sig,
570 compat_siginfo_t __user *uinfo)
574 mm_segment_t old_fs = get_fs();
576 if (copy_siginfo_from_user32(&info, uinfo))
579 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info);
584 /* These are here just in case some old ia32 binary calls it. */
585 asmlinkage long sys32_pause(void)
587 current->state = TASK_INTERRUPTIBLE;
589 return -ERESTARTNOHAND;
593 #ifdef CONFIG_SYSCTL_SYSCALL
598 unsigned int oldlenp;
601 unsigned int __unused[4];
605 asmlinkage long sys32_sysctl(struct sysctl_ia32 __user *args32)
607 struct sysctl_ia32 a32;
608 mm_segment_t old_fs = get_fs();
609 void __user *oldvalp, *newvalp;
614 if (copy_from_user(&a32, args32, sizeof(a32)))
618 * We need to pre-validate these because we have to disable
619 * address checking before calling do_sysctl() because of
620 * OLDLEN but we can't run the risk of the user specifying bad
621 * addresses here. Well, since we're dealing with 32 bit
622 * addresses, we KNOW that access_ok() will always succeed, so
623 * this is an expensive NOP, but so what...
625 namep = compat_ptr(a32.name);
626 oldvalp = compat_ptr(a32.oldval);
627 newvalp = compat_ptr(a32.newval);
629 if ((oldvalp && get_user(oldlen, (int __user *)compat_ptr(a32.oldlenp)))
630 || !access_ok(VERIFY_WRITE, namep, 0)
631 || !access_ok(VERIFY_WRITE, oldvalp, 0)
632 || !access_ok(VERIFY_WRITE, newvalp, 0))
637 ret = do_sysctl(namep, a32.nlen, oldvalp, (size_t __user *)&oldlen,
638 newvalp, (size_t) a32.newlen);
642 if (oldvalp && put_user(oldlen, (int __user *)compat_ptr(a32.oldlenp)))
649 /* warning: next two assume little endian */
650 asmlinkage long sys32_pread(unsigned int fd, char __user *ubuf, u32 count,
651 u32 poslo, u32 poshi)
653 return sys_pread64(fd, ubuf, count,
654 ((loff_t)AA(poshi) << 32) | AA(poslo));
657 asmlinkage long sys32_pwrite(unsigned int fd, char __user *ubuf, u32 count,
658 u32 poslo, u32 poshi)
660 return sys_pwrite64(fd, ubuf, count,
661 ((loff_t)AA(poshi) << 32) | AA(poslo));
665 asmlinkage long sys32_personality(unsigned long personality)
669 if (personality(current->personality) == PER_LINUX32 &&
670 personality == PER_LINUX)
671 personality = PER_LINUX32;
672 ret = sys_personality(personality);
673 if (ret == PER_LINUX32)
678 asmlinkage long sys32_sendfile(int out_fd, int in_fd,
679 compat_off_t __user *offset, s32 count)
681 mm_segment_t old_fs = get_fs();
685 if (offset && get_user(of, offset))
689 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL,
693 if (offset && put_user(of, offset))
698 asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len,
699 unsigned long prot, unsigned long flags,
700 unsigned long fd, unsigned long pgoff)
702 struct mm_struct *mm = current->mm;
704 struct file *file = NULL;
706 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
707 if (!(flags & MAP_ANONYMOUS)) {
713 down_write(&mm->mmap_sem);
714 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
715 up_write(&mm->mmap_sem);
722 asmlinkage long sys32_olduname(struct oldold_utsname __user *name)
724 char *arch = "x86_64";
729 if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname)))
734 err = __copy_to_user(&name->sysname, &utsname()->sysname,
736 err |= __put_user(0, name->sysname+__OLD_UTS_LEN);
737 err |= __copy_to_user(&name->nodename, &utsname()->nodename,
739 err |= __put_user(0, name->nodename+__OLD_UTS_LEN);
740 err |= __copy_to_user(&name->release, &utsname()->release,
742 err |= __put_user(0, name->release+__OLD_UTS_LEN);
743 err |= __copy_to_user(&name->version, &utsname()->version,
745 err |= __put_user(0, name->version+__OLD_UTS_LEN);
747 if (personality(current->personality) == PER_LINUX32)
750 err |= __copy_to_user(&name->machine, arch, strlen(arch) + 1);
754 err = err ? -EFAULT : 0;
759 long sys32_uname(struct old_utsname __user *name)
766 err = copy_to_user(name, utsname(), sizeof(*name));
768 if (personality(current->personality) == PER_LINUX32)
769 err |= copy_to_user(&name->machine, "i686", 5);
771 return err ? -EFAULT : 0;
774 long sys32_ustat(unsigned dev, struct ustat32 __user *u32p)
782 ret = sys_ustat(dev, (struct ustat __user *)&u);
787 if (!access_ok(VERIFY_WRITE, u32p, sizeof(struct ustat32)) ||
788 __put_user((__u32) u.f_tfree, &u32p->f_tfree) ||
789 __put_user((__u32) u.f_tinode, &u32p->f_tfree) ||
790 __copy_to_user(&u32p->f_fname, u.f_fname, sizeof(u.f_fname)) ||
791 __copy_to_user(&u32p->f_fpack, u.f_fpack, sizeof(u.f_fpack)))
796 asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv,
797 compat_uptr_t __user *envp, struct pt_regs *regs)
802 filename = getname(name);
803 error = PTR_ERR(filename);
804 if (IS_ERR(filename))
806 error = compat_do_execve(filename, argv, envp, regs);
809 current->ptrace &= ~PT_DTRACE;
810 task_unlock(current);
816 asmlinkage long sys32_clone(unsigned int clone_flags, unsigned int newsp,
817 struct pt_regs *regs)
819 void __user *parent_tid = (void __user *)regs->dx;
820 void __user *child_tid = (void __user *)regs->di;
824 return do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid);
828 * Some system calls that need sign extended arguments. This could be
829 * done by a generic wrapper.
831 long sys32_lseek(unsigned int fd, int offset, unsigned int whence)
833 return sys_lseek(fd, offset, whence);
836 long sys32_kill(int pid, int sig)
838 return sys_kill(pid, sig);
841 long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high,
842 __u32 len_low, __u32 len_high, int advice)
844 return sys_fadvise64_64(fd,
845 (((u64)offset_high)<<32) | offset_low,
846 (((u64)len_high)<<32) | len_low,
850 long sys32_vm86_warning(void)
852 struct task_struct *me = current;
853 static char lastcomm[sizeof(me->comm)];
855 if (strncmp(lastcomm, me->comm, sizeof(lastcomm))) {
856 compat_printk(KERN_INFO
857 "%s: vm86 mode not supported on 64 bit kernel\n",
859 strncpy(lastcomm, me->comm, sizeof(lastcomm));
864 long sys32_lookup_dcookie(u32 addr_low, u32 addr_high,
865 char __user *buf, size_t len)
867 return sys_lookup_dcookie(((u64)addr_high << 32) | addr_low, buf, len);
870 asmlinkage ssize_t sys32_readahead(int fd, unsigned off_lo, unsigned off_hi,
873 return sys_readahead(fd, ((u64)off_hi << 32) | off_lo, count);
876 asmlinkage long sys32_sync_file_range(int fd, unsigned off_low, unsigned off_hi,
877 unsigned n_low, unsigned n_hi, int flags)
879 return sys_sync_file_range(fd,
880 ((u64)off_hi << 32) | off_low,
881 ((u64)n_hi << 32) | n_low, flags);
884 asmlinkage long sys32_fadvise64(int fd, unsigned offset_lo, unsigned offset_hi,
885 size_t len, int advice)
887 return sys_fadvise64_64(fd, ((u64)offset_hi << 32) | offset_lo,
891 asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_lo,
892 unsigned offset_hi, unsigned len_lo,
895 return sys_fallocate(fd, mode, ((u64)offset_hi << 32) | offset_lo,
896 ((u64)len_hi << 32) | len_lo);