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);
535 unsigned short procs;
540 char _f[20-2*sizeof(u32)-sizeof(int)];
544 sys32_sysinfo(struct sysinfo32 __user *info)
548 mm_segment_t old_fs = get_fs ();
552 ret = sys_sysinfo((struct sysinfo __user *)&s);
555 /* Check to see if any memory value is too large for 32-bit and scale
558 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
559 while (s.mem_unit < PAGE_SIZE) {
563 s.totalram >>= bitcount;
564 s.freeram >>= bitcount;
565 s.sharedram >>= bitcount;
566 s.bufferram >>= bitcount;
567 s.totalswap >>= bitcount;
568 s.freeswap >>= bitcount;
569 s.totalhigh >>= bitcount;
570 s.freehigh >>= bitcount;
573 if (!access_ok(VERIFY_WRITE, info, sizeof(struct sysinfo32)) ||
574 __put_user (s.uptime, &info->uptime) ||
575 __put_user (s.loads[0], &info->loads[0]) ||
576 __put_user (s.loads[1], &info->loads[1]) ||
577 __put_user (s.loads[2], &info->loads[2]) ||
578 __put_user (s.totalram, &info->totalram) ||
579 __put_user (s.freeram, &info->freeram) ||
580 __put_user (s.sharedram, &info->sharedram) ||
581 __put_user (s.bufferram, &info->bufferram) ||
582 __put_user (s.totalswap, &info->totalswap) ||
583 __put_user (s.freeswap, &info->freeswap) ||
584 __put_user (s.procs, &info->procs) ||
585 __put_user (s.totalhigh, &info->totalhigh) ||
586 __put_user (s.freehigh, &info->freehigh) ||
587 __put_user (s.mem_unit, &info->mem_unit))
593 sys32_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
597 mm_segment_t old_fs = get_fs ();
600 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
602 if (put_compat_timespec(&t, interval))
608 sys32_rt_sigpending(compat_sigset_t __user *set, compat_size_t sigsetsize)
613 mm_segment_t old_fs = get_fs();
616 ret = sys_rt_sigpending((sigset_t __user *)&s, sigsetsize);
619 switch (_NSIG_WORDS) {
620 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
621 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
622 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
623 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
625 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
632 sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo)
636 mm_segment_t old_fs = get_fs();
638 if (copy_siginfo_from_user32(&info, uinfo))
641 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info);
646 /* These are here just in case some old ia32 binary calls it. */
650 current->state = TASK_INTERRUPTIBLE;
652 return -ERESTARTNOHAND;
656 #ifdef CONFIG_SYSCTL_SYSCALL
661 unsigned int oldlenp;
664 unsigned int __unused[4];
669 sys32_sysctl(struct sysctl_ia32 __user *args32)
671 struct sysctl_ia32 a32;
672 mm_segment_t old_fs = get_fs ();
673 void __user *oldvalp, *newvalp;
678 if (copy_from_user(&a32, args32, sizeof (a32)))
682 * We need to pre-validate these because we have to disable address checking
683 * before calling do_sysctl() because of OLDLEN but we can't run the risk of the
684 * user specifying bad addresses here. Well, since we're dealing with 32 bit
685 * addresses, we KNOW that access_ok() will always succeed, so this is an
686 * expensive NOP, but so what...
688 namep = compat_ptr(a32.name);
689 oldvalp = compat_ptr(a32.oldval);
690 newvalp = compat_ptr(a32.newval);
692 if ((oldvalp && get_user(oldlen, (int __user *)compat_ptr(a32.oldlenp)))
693 || !access_ok(VERIFY_WRITE, namep, 0)
694 || !access_ok(VERIFY_WRITE, oldvalp, 0)
695 || !access_ok(VERIFY_WRITE, newvalp, 0))
700 ret = do_sysctl(namep, a32.nlen, oldvalp, (size_t __user *)&oldlen,
701 newvalp, (size_t) a32.newlen);
705 if (oldvalp && put_user (oldlen, (int __user *)compat_ptr(a32.oldlenp)))
712 /* warning: next two assume little endian */
714 sys32_pread(unsigned int fd, char __user *ubuf, u32 count, u32 poslo, u32 poshi)
716 return sys_pread64(fd, ubuf, count,
717 ((loff_t)AA(poshi) << 32) | AA(poslo));
721 sys32_pwrite(unsigned int fd, char __user *ubuf, u32 count, u32 poslo, u32 poshi)
723 return sys_pwrite64(fd, ubuf, count,
724 ((loff_t)AA(poshi) << 32) | AA(poslo));
729 sys32_personality(unsigned long personality)
732 if (personality(current->personality) == PER_LINUX32 &&
733 personality == PER_LINUX)
734 personality = PER_LINUX32;
735 ret = sys_personality(personality);
736 if (ret == PER_LINUX32)
742 sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count)
744 mm_segment_t old_fs = get_fs();
748 if (offset && get_user(of, offset))
752 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL,
756 if (offset && put_user(of, offset))
762 asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len,
763 unsigned long prot, unsigned long flags,
764 unsigned long fd, unsigned long pgoff)
766 struct mm_struct *mm = current->mm;
768 struct file * file = NULL;
770 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
771 if (!(flags & MAP_ANONYMOUS)) {
777 down_write(&mm->mmap_sem);
778 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
779 up_write(&mm->mmap_sem);
786 asmlinkage long sys32_olduname(struct oldold_utsname __user * name)
792 if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname)))
797 err = __copy_to_user(&name->sysname,&utsname()->sysname,
799 err |= __put_user(0,name->sysname+__OLD_UTS_LEN);
800 err |= __copy_to_user(&name->nodename,&utsname()->nodename,
802 err |= __put_user(0,name->nodename+__OLD_UTS_LEN);
803 err |= __copy_to_user(&name->release,&utsname()->release,
805 err |= __put_user(0,name->release+__OLD_UTS_LEN);
806 err |= __copy_to_user(&name->version,&utsname()->version,
808 err |= __put_user(0,name->version+__OLD_UTS_LEN);
810 char *arch = "x86_64";
811 if (personality(current->personality) == PER_LINUX32)
814 err |= __copy_to_user(&name->machine, arch, strlen(arch)+1);
819 err = err ? -EFAULT : 0;
824 long sys32_uname(struct old_utsname __user * name)
830 err = copy_to_user(name, utsname(), sizeof (*name));
832 if (personality(current->personality) == PER_LINUX32)
833 err |= copy_to_user(&name->machine, "i686", 5);
834 return err?-EFAULT:0;
837 long sys32_ustat(unsigned dev, struct ustat32 __user *u32p)
845 ret = sys_ustat(dev, (struct ustat __user *)&u);
848 if (!access_ok(VERIFY_WRITE,u32p,sizeof(struct ustat32)) ||
849 __put_user((__u32) u.f_tfree, &u32p->f_tfree) ||
850 __put_user((__u32) u.f_tinode, &u32p->f_tfree) ||
851 __copy_to_user(&u32p->f_fname, u.f_fname, sizeof(u.f_fname)) ||
852 __copy_to_user(&u32p->f_fpack, u.f_fpack, sizeof(u.f_fpack)))
858 asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv,
859 compat_uptr_t __user *envp, struct pt_regs *regs)
864 filename = getname(name);
865 error = PTR_ERR(filename);
866 if (IS_ERR(filename))
868 error = compat_do_execve(filename, argv, envp, regs);
871 current->ptrace &= ~PT_DTRACE;
872 task_unlock(current);
878 asmlinkage long sys32_clone(unsigned int clone_flags, unsigned int newsp,
879 struct pt_regs *regs)
881 void __user *parent_tid = (void __user *)regs->rdx;
882 void __user *child_tid = (void __user *)regs->rdi;
885 return do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid);
889 * Some system calls that need sign extended arguments. This could be done by a generic wrapper.
892 long sys32_lseek (unsigned int fd, int offset, unsigned int whence)
894 return sys_lseek(fd, offset, whence);
897 long sys32_kill(int pid, int sig)
899 return sys_kill(pid, sig);
902 long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high,
903 __u32 len_low, __u32 len_high, int advice)
905 return sys_fadvise64_64(fd,
906 (((u64)offset_high)<<32) | offset_low,
907 (((u64)len_high)<<32) | len_low,
911 long sys32_vm86_warning(void)
913 struct task_struct *me = current;
914 static char lastcomm[sizeof(me->comm)];
915 if (strncmp(lastcomm, me->comm, sizeof(lastcomm))) {
916 compat_printk(KERN_INFO "%s: vm86 mode not supported on 64 bit kernel\n",
918 strncpy(lastcomm, me->comm, sizeof(lastcomm));
923 long sys32_lookup_dcookie(u32 addr_low, u32 addr_high,
924 char __user * buf, size_t len)
926 return sys_lookup_dcookie(((u64)addr_high << 32) | addr_low, buf, len);