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 hopefully all marked.
20 * 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))
114 sys32_truncate64(char __user * filename, unsigned long offset_low, unsigned long offset_high)
116 return sys_truncate(filename, ((loff_t) offset_high << 32) | offset_low);
120 sys32_ftruncate64(unsigned int fd, unsigned long offset_low, unsigned long offset_high)
122 return sys_ftruncate(fd, ((loff_t) offset_high << 32) | offset_low);
125 /* Another set for IA32/LFS -- x86_64 struct stat is different due to
126 support for 64bit inode numbers. */
129 cp_stat64(struct stat64 __user *ubuf, struct kstat *stat)
131 typeof(ubuf->st_uid) uid = 0;
132 typeof(ubuf->st_gid) gid = 0;
133 SET_UID(uid, stat->uid);
134 SET_GID(gid, stat->gid);
135 if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) ||
136 __put_user(huge_encode_dev(stat->dev), &ubuf->st_dev) ||
137 __put_user (stat->ino, &ubuf->__st_ino) ||
138 __put_user (stat->ino, &ubuf->st_ino) ||
139 __put_user (stat->mode, &ubuf->st_mode) ||
140 __put_user (stat->nlink, &ubuf->st_nlink) ||
141 __put_user (uid, &ubuf->st_uid) ||
142 __put_user (gid, &ubuf->st_gid) ||
143 __put_user (huge_encode_dev(stat->rdev), &ubuf->st_rdev) ||
144 __put_user (stat->size, &ubuf->st_size) ||
145 __put_user (stat->atime.tv_sec, &ubuf->st_atime) ||
146 __put_user (stat->atime.tv_nsec, &ubuf->st_atime_nsec) ||
147 __put_user (stat->mtime.tv_sec, &ubuf->st_mtime) ||
148 __put_user (stat->mtime.tv_nsec, &ubuf->st_mtime_nsec) ||
149 __put_user (stat->ctime.tv_sec, &ubuf->st_ctime) ||
150 __put_user (stat->ctime.tv_nsec, &ubuf->st_ctime_nsec) ||
151 __put_user (stat->blksize, &ubuf->st_blksize) ||
152 __put_user (stat->blocks, &ubuf->st_blocks))
158 sys32_stat64(char __user * filename, struct stat64 __user *statbuf)
161 int ret = vfs_stat(filename, &stat);
163 ret = cp_stat64(statbuf, &stat);
168 sys32_lstat64(char __user * filename, struct stat64 __user *statbuf)
171 int ret = vfs_lstat(filename, &stat);
173 ret = cp_stat64(statbuf, &stat);
178 sys32_fstat64(unsigned int fd, struct stat64 __user *statbuf)
181 int ret = vfs_fstat(fd, &stat);
183 ret = cp_stat64(statbuf, &stat);
188 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 {
225 sys32_mmap(struct mmap_arg_struct __user *arg)
227 struct mmap_arg_struct a;
228 struct file *file = NULL;
229 unsigned long retval;
230 struct mm_struct *mm ;
232 if (copy_from_user(&a, arg, sizeof(a)))
235 if (a.offset & ~PAGE_MASK)
238 if (!(a.flags & MAP_ANONYMOUS)) {
245 down_write(&mm->mmap_sem);
246 retval = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, a.offset>>PAGE_SHIFT);
250 up_write(&mm->mmap_sem);
256 sys32_mprotect(unsigned long start, size_t len, unsigned long prot)
258 return sys_mprotect(start,len,prot);
262 sys32_pipe(int __user *fd)
267 retval = do_pipe(fds);
270 if (copy_to_user(fd, fds, sizeof(fds)))
277 sys32_rt_sigaction(int sig, struct sigaction32 __user *act,
278 struct sigaction32 __user *oact, unsigned int sigsetsize)
280 struct k_sigaction new_ka, old_ka;
282 compat_sigset_t set32;
284 /* XXX: Don't preclude handling different sized sigset_t's. */
285 if (sigsetsize != sizeof(compat_sigset_t))
289 compat_uptr_t handler, restorer;
291 if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
292 __get_user(handler, &act->sa_handler) ||
293 __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
294 __get_user(restorer, &act->sa_restorer)||
295 __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t)))
297 new_ka.sa.sa_handler = compat_ptr(handler);
298 new_ka.sa.sa_restorer = compat_ptr(restorer);
299 /* FIXME: here we rely on _COMPAT_NSIG_WORS to be >= than _NSIG_WORDS << 1 */
300 switch (_NSIG_WORDS) {
301 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6]
302 | (((long)set32.sig[7]) << 32);
303 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4]
304 | (((long)set32.sig[5]) << 32);
305 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2]
306 | (((long)set32.sig[3]) << 32);
307 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0]
308 | (((long)set32.sig[1]) << 32);
312 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
315 /* FIXME: here we rely on _COMPAT_NSIG_WORS to be >= than _NSIG_WORDS << 1 */
316 switch (_NSIG_WORDS) {
318 set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32);
319 set32.sig[6] = old_ka.sa.sa_mask.sig[3];
321 set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32);
322 set32.sig[4] = old_ka.sa.sa_mask.sig[2];
324 set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32);
325 set32.sig[2] = old_ka.sa.sa_mask.sig[1];
327 set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32);
328 set32.sig[0] = old_ka.sa.sa_mask.sig[0];
330 if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
331 __put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler) ||
332 __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer) ||
333 __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
334 __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t)))
342 sys32_sigaction (int sig, struct old_sigaction32 __user *act, struct old_sigaction32 __user *oact)
344 struct k_sigaction new_ka, old_ka;
348 compat_old_sigset_t mask;
349 compat_uptr_t handler, restorer;
351 if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
352 __get_user(handler, &act->sa_handler) ||
353 __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
354 __get_user(restorer, &act->sa_restorer) ||
355 __get_user(mask, &act->sa_mask))
358 new_ka.sa.sa_handler = compat_ptr(handler);
359 new_ka.sa.sa_restorer = compat_ptr(restorer);
361 siginitset(&new_ka.sa.sa_mask, mask);
364 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
367 if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
368 __put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler) ||
369 __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer) ||
370 __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
371 __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
379 sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
380 compat_sigset_t __user *oset, unsigned int sigsetsize)
385 mm_segment_t old_fs = get_fs();
388 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
390 switch (_NSIG_WORDS) {
391 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
392 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
393 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
394 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
398 ret = sys_rt_sigprocmask(how,
399 set ? (sigset_t __user *)&s : NULL,
400 oset ? (sigset_t __user *)&s : NULL,
405 switch (_NSIG_WORDS) {
406 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
407 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
408 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
409 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
411 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
418 get_tv32(struct timeval *o, struct compat_timeval __user *i)
421 if (access_ok(VERIFY_READ, i, sizeof(*i))) {
422 err = __get_user(o->tv_sec, &i->tv_sec);
423 err |= __get_user(o->tv_usec, &i->tv_usec);
429 put_tv32(struct compat_timeval __user *o, struct timeval *i)
432 if (access_ok(VERIFY_WRITE, o, sizeof(*o))) {
433 err = __put_user(i->tv_sec, &o->tv_sec);
434 err |= __put_user(i->tv_usec, &o->tv_usec);
439 extern unsigned int alarm_setitimer(unsigned int seconds);
442 sys32_alarm(unsigned int seconds)
444 return alarm_setitimer(seconds);
447 /* Translations due to time_t size differences. Which affects all
448 sorts of things, like timeval and itimerval. */
450 extern struct timezone sys_tz;
453 sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
457 do_gettimeofday(&ktv);
458 if (put_tv32(tv, &ktv))
462 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
469 sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
476 if (get_tv32(&ktv, tv))
478 kts.tv_sec = ktv.tv_sec;
479 kts.tv_nsec = ktv.tv_usec * NSEC_PER_USEC;
482 if (copy_from_user(&ktz, tz, sizeof(ktz)))
486 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
489 struct sel_arg_struct {
498 sys32_old_select(struct sel_arg_struct __user *arg)
500 struct sel_arg_struct a;
502 if (copy_from_user(&a, arg, sizeof(a)))
504 return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp),
505 compat_ptr(a.exp), compat_ptr(a.tvp));
508 extern asmlinkage long
509 compat_sys_wait4(compat_pid_t pid, compat_uint_t * stat_addr, int options,
510 struct compat_rusage *ru);
513 sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, int options)
515 return compat_sys_wait4(pid, stat_addr, options, NULL);
518 /* 32-bit timeval and related flotsam. */
521 sys32_sysfs(int option, u32 arg1, u32 arg2)
523 return sys_sysfs(option, arg1, arg2);
527 sys32_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
531 mm_segment_t old_fs = get_fs ();
534 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
536 if (put_compat_timespec(&t, interval))
542 sys32_rt_sigpending(compat_sigset_t __user *set, compat_size_t sigsetsize)
547 mm_segment_t old_fs = get_fs();
550 ret = sys_rt_sigpending((sigset_t __user *)&s, sigsetsize);
553 switch (_NSIG_WORDS) {
554 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
555 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
556 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
557 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
559 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
566 sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo)
570 mm_segment_t old_fs = get_fs();
572 if (copy_siginfo_from_user32(&info, uinfo))
575 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info);
580 /* These are here just in case some old ia32 binary calls it. */
584 current->state = TASK_INTERRUPTIBLE;
586 return -ERESTARTNOHAND;
590 #ifdef CONFIG_SYSCTL_SYSCALL
595 unsigned int oldlenp;
598 unsigned int __unused[4];
603 sys32_sysctl(struct sysctl_ia32 __user *args32)
605 struct sysctl_ia32 a32;
606 mm_segment_t old_fs = get_fs ();
607 void __user *oldvalp, *newvalp;
612 if (copy_from_user(&a32, args32, sizeof (a32)))
616 * We need to pre-validate these because we have to disable address checking
617 * before calling do_sysctl() because of OLDLEN but we can't run the risk of the
618 * user specifying bad addresses here. Well, since we're dealing with 32 bit
619 * addresses, we KNOW that access_ok() will always succeed, so this is an
620 * expensive NOP, but so what...
622 namep = compat_ptr(a32.name);
623 oldvalp = compat_ptr(a32.oldval);
624 newvalp = compat_ptr(a32.newval);
626 if ((oldvalp && get_user(oldlen, (int __user *)compat_ptr(a32.oldlenp)))
627 || !access_ok(VERIFY_WRITE, namep, 0)
628 || !access_ok(VERIFY_WRITE, oldvalp, 0)
629 || !access_ok(VERIFY_WRITE, newvalp, 0))
634 ret = do_sysctl(namep, a32.nlen, oldvalp, (size_t __user *)&oldlen,
635 newvalp, (size_t) a32.newlen);
639 if (oldvalp && put_user (oldlen, (int __user *)compat_ptr(a32.oldlenp)))
646 /* warning: next two assume little endian */
648 sys32_pread(unsigned int fd, char __user *ubuf, u32 count, u32 poslo, u32 poshi)
650 return sys_pread64(fd, ubuf, count,
651 ((loff_t)AA(poshi) << 32) | AA(poslo));
655 sys32_pwrite(unsigned int fd, char __user *ubuf, u32 count, u32 poslo, u32 poshi)
657 return sys_pwrite64(fd, ubuf, count,
658 ((loff_t)AA(poshi) << 32) | AA(poslo));
663 sys32_personality(unsigned long personality)
666 if (personality(current->personality) == PER_LINUX32 &&
667 personality == PER_LINUX)
668 personality = PER_LINUX32;
669 ret = sys_personality(personality);
670 if (ret == PER_LINUX32)
676 sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count)
678 mm_segment_t old_fs = get_fs();
682 if (offset && get_user(of, offset))
686 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL,
690 if (offset && put_user(of, offset))
696 asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len,
697 unsigned long prot, unsigned long flags,
698 unsigned long fd, unsigned long pgoff)
700 struct mm_struct *mm = current->mm;
702 struct file * file = NULL;
704 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
705 if (!(flags & MAP_ANONYMOUS)) {
711 down_write(&mm->mmap_sem);
712 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
713 up_write(&mm->mmap_sem);
720 asmlinkage long sys32_olduname(struct oldold_utsname __user * name)
726 if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname)))
731 err = __copy_to_user(&name->sysname,&utsname()->sysname,
733 err |= __put_user(0,name->sysname+__OLD_UTS_LEN);
734 err |= __copy_to_user(&name->nodename,&utsname()->nodename,
736 err |= __put_user(0,name->nodename+__OLD_UTS_LEN);
737 err |= __copy_to_user(&name->release,&utsname()->release,
739 err |= __put_user(0,name->release+__OLD_UTS_LEN);
740 err |= __copy_to_user(&name->version,&utsname()->version,
742 err |= __put_user(0,name->version+__OLD_UTS_LEN);
744 char *arch = "x86_64";
745 if (personality(current->personality) == PER_LINUX32)
748 err |= __copy_to_user(&name->machine, arch, strlen(arch)+1);
753 err = err ? -EFAULT : 0;
758 long sys32_uname(struct old_utsname __user * name)
764 err = copy_to_user(name, utsname(), sizeof (*name));
766 if (personality(current->personality) == PER_LINUX32)
767 err |= copy_to_user(&name->machine, "i686", 5);
768 return err?-EFAULT:0;
771 long sys32_ustat(unsigned dev, struct ustat32 __user *u32p)
779 ret = sys_ustat(dev, (struct ustat __user *)&u);
782 if (!access_ok(VERIFY_WRITE,u32p,sizeof(struct ustat32)) ||
783 __put_user((__u32) u.f_tfree, &u32p->f_tfree) ||
784 __put_user((__u32) u.f_tinode, &u32p->f_tfree) ||
785 __copy_to_user(&u32p->f_fname, u.f_fname, sizeof(u.f_fname)) ||
786 __copy_to_user(&u32p->f_fpack, u.f_fpack, sizeof(u.f_fpack)))
792 asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv,
793 compat_uptr_t __user *envp, struct pt_regs *regs)
798 filename = getname(name);
799 error = PTR_ERR(filename);
800 if (IS_ERR(filename))
802 error = compat_do_execve(filename, argv, envp, regs);
805 current->ptrace &= ~PT_DTRACE;
806 task_unlock(current);
812 asmlinkage long sys32_clone(unsigned int clone_flags, unsigned int newsp,
813 struct pt_regs *regs)
815 void __user *parent_tid = (void __user *)regs->rdx;
816 void __user *child_tid = (void __user *)regs->rdi;
819 return do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid);
823 * Some system calls that need sign extended arguments. This could be done by a generic wrapper.
826 long sys32_lseek (unsigned int fd, int offset, unsigned int whence)
828 return sys_lseek(fd, offset, whence);
831 long sys32_kill(int pid, int sig)
833 return sys_kill(pid, sig);
836 long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high,
837 __u32 len_low, __u32 len_high, int advice)
839 return sys_fadvise64_64(fd,
840 (((u64)offset_high)<<32) | offset_low,
841 (((u64)len_high)<<32) | len_low,
845 long sys32_vm86_warning(void)
847 struct task_struct *me = current;
848 static char lastcomm[sizeof(me->comm)];
849 if (strncmp(lastcomm, me->comm, sizeof(lastcomm))) {
850 compat_printk(KERN_INFO "%s: vm86 mode not supported on 64 bit kernel\n",
852 strncpy(lastcomm, me->comm, sizeof(lastcomm));
857 long sys32_lookup_dcookie(u32 addr_low, u32 addr_high,
858 char __user * buf, size_t len)
860 return sys_lookup_dcookie(((u64)addr_high << 32) | addr_low, buf, len);
863 asmlinkage ssize_t sys32_readahead(int fd, unsigned off_lo, unsigned off_hi, size_t count)
865 return sys_readahead(fd, ((u64)off_hi << 32) | off_lo, count);
868 asmlinkage long sys32_sync_file_range(int fd, unsigned off_low, unsigned off_hi,
869 unsigned n_low, unsigned n_hi, int flags)
871 return sys_sync_file_range(fd,
872 ((u64)off_hi << 32) | off_low,
873 ((u64)n_hi << 32) | n_low, flags);
876 asmlinkage long sys32_fadvise64(int fd, unsigned offset_lo, unsigned offset_hi, size_t len,
879 return sys_fadvise64_64(fd, ((u64)offset_hi << 32) | offset_lo,
883 asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_lo,
884 unsigned offset_hi, unsigned len_lo,
887 return sys_fallocate(fd, mode, ((u64)offset_hi << 32) | offset_lo,
888 ((u64)len_hi << 32) | len_lo);