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/config.h>
24 #include <linux/kernel.h>
25 #include <linux/sched.h>
27 #include <linux/file.h>
28 #include <linux/signal.h>
29 #include <linux/syscalls.h>
30 #include <linux/resource.h>
31 #include <linux/times.h>
32 #include <linux/utsname.h>
33 #include <linux/timex.h>
34 #include <linux/smp.h>
35 #include <linux/smp_lock.h>
36 #include <linux/sem.h>
37 #include <linux/msg.h>
39 #include <linux/shm.h>
40 #include <linux/slab.h>
41 #include <linux/uio.h>
42 #include <linux/nfs_fs.h>
43 #include <linux/quota.h>
44 #include <linux/module.h>
45 #include <linux/sunrpc/svc.h>
46 #include <linux/nfsd/nfsd.h>
47 #include <linux/nfsd/cache.h>
48 #include <linux/nfsd/xdr.h>
49 #include <linux/nfsd/syscall.h>
50 #include <linux/poll.h>
51 #include <linux/personality.h>
52 #include <linux/stat.h>
53 #include <linux/ipc.h>
54 #include <linux/rwsem.h>
55 #include <linux/binfmts.h>
56 #include <linux/init.h>
57 #include <linux/aio_abi.h>
58 #include <linux/aio.h>
59 #include <linux/compat.h>
60 #include <linux/vfs.h>
61 #include <linux/ptrace.h>
62 #include <linux/highuid.h>
63 #include <linux/vmalloc.h>
65 #include <asm/types.h>
66 #include <asm/uaccess.h>
67 #include <asm/semaphore.h>
69 #include <asm/atomic.h>
76 #define A(__x) ((unsigned long)(__x))
77 #define AA(__x) ((unsigned long)(__x))
78 #define ROUND_UP(x,a) ((__typeof__(x))(((unsigned long)(x) + ((a) - 1)) & ~((a) - 1)))
79 #define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
81 int cp_compat_stat(struct kstat *kbuf, struct compat_stat *ubuf)
83 typeof(ubuf->st_uid) uid = 0;
84 typeof(ubuf->st_gid) gid = 0;
85 SET_UID(uid, kbuf->uid);
86 SET_GID(gid, kbuf->gid);
87 if (!old_valid_dev(kbuf->dev) || !old_valid_dev(kbuf->rdev))
89 if (kbuf->size >= 0x7fffffff)
91 if (verify_area(VERIFY_WRITE, ubuf, sizeof(struct compat_stat)) ||
92 __put_user (old_encode_dev(kbuf->dev), &ubuf->st_dev) ||
93 __put_user (kbuf->ino, &ubuf->st_ino) ||
94 __put_user (kbuf->mode, &ubuf->st_mode) ||
95 __put_user (kbuf->nlink, &ubuf->st_nlink) ||
96 __put_user (uid, &ubuf->st_uid) ||
97 __put_user (gid, &ubuf->st_gid) ||
98 __put_user (old_encode_dev(kbuf->rdev), &ubuf->st_rdev) ||
99 __put_user (kbuf->size, &ubuf->st_size) ||
100 __put_user (kbuf->atime.tv_sec, &ubuf->st_atime) ||
101 __put_user (kbuf->atime.tv_nsec, &ubuf->st_atime_nsec) ||
102 __put_user (kbuf->mtime.tv_sec, &ubuf->st_mtime) ||
103 __put_user (kbuf->mtime.tv_nsec, &ubuf->st_mtime_nsec) ||
104 __put_user (kbuf->ctime.tv_sec, &ubuf->st_ctime) ||
105 __put_user (kbuf->ctime.tv_nsec, &ubuf->st_ctime_nsec) ||
106 __put_user (kbuf->blksize, &ubuf->st_blksize) ||
107 __put_user (kbuf->blocks, &ubuf->st_blocks))
113 sys32_truncate64(char * filename, unsigned long offset_low, unsigned long offset_high)
115 return sys_truncate(filename, ((loff_t) offset_high << 32) | offset_low);
119 sys32_ftruncate64(unsigned int fd, unsigned long offset_low, unsigned long offset_high)
121 return sys_ftruncate(fd, ((loff_t) offset_high << 32) | offset_low);
124 /* Another set for IA32/LFS -- x86_64 struct stat is different due to
125 support for 64bit inode numbers. */
128 cp_stat64(struct stat64 *ubuf, struct kstat *stat)
130 typeof(ubuf->st_uid) uid = 0;
131 typeof(ubuf->st_gid) gid = 0;
132 SET_UID(uid, stat->uid);
133 SET_GID(gid, stat->gid);
134 if (verify_area(VERIFY_WRITE, ubuf, sizeof(struct stat64)) ||
135 __put_user(huge_encode_dev(stat->dev), &ubuf->st_dev) ||
136 __put_user (stat->ino, &ubuf->__st_ino) ||
137 __put_user (stat->ino, &ubuf->st_ino) ||
138 __put_user (stat->mode, &ubuf->st_mode) ||
139 __put_user (stat->nlink, &ubuf->st_nlink) ||
140 __put_user (uid, &ubuf->st_uid) ||
141 __put_user (gid, &ubuf->st_gid) ||
142 __put_user (huge_encode_dev(stat->rdev), &ubuf->st_rdev) ||
143 __put_user (stat->size, &ubuf->st_size) ||
144 __put_user (stat->atime.tv_sec, &ubuf->st_atime) ||
145 __put_user (stat->atime.tv_nsec, &ubuf->st_atime_nsec) ||
146 __put_user (stat->mtime.tv_sec, &ubuf->st_mtime) ||
147 __put_user (stat->mtime.tv_nsec, &ubuf->st_mtime_nsec) ||
148 __put_user (stat->ctime.tv_sec, &ubuf->st_ctime) ||
149 __put_user (stat->ctime.tv_nsec, &ubuf->st_ctime_nsec) ||
150 __put_user (stat->blksize, &ubuf->st_blksize) ||
151 __put_user (stat->blocks, &ubuf->st_blocks))
157 sys32_stat64(char * filename, struct stat64 *statbuf)
160 int ret = vfs_stat(filename, &stat);
162 ret = cp_stat64(statbuf, &stat);
167 sys32_lstat64(char * filename, struct stat64 *statbuf)
170 int ret = vfs_lstat(filename, &stat);
172 ret = cp_stat64(statbuf, &stat);
177 sys32_fstat64(unsigned int fd, struct stat64 *statbuf)
180 int ret = vfs_fstat(fd, &stat);
182 ret = cp_stat64(statbuf, &stat);
187 * Linux/i386 didn't use to be able to handle more than
188 * 4 system call parameters, so these system calls used a memory
189 * block for parameter passing..
192 struct mmap_arg_struct {
202 sys32_mmap(struct mmap_arg_struct *arg)
204 struct mmap_arg_struct a;
205 struct file *file = NULL;
206 unsigned long retval;
207 struct mm_struct *mm ;
209 if (copy_from_user(&a, arg, sizeof(a)))
212 if (a.offset & ~PAGE_MASK)
215 if (!(a.flags & MAP_ANONYMOUS)) {
221 if (a.prot & PROT_READ)
222 a.prot |= vm_force_exec32;
225 down_write(&mm->mmap_sem);
226 retval = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, a.offset>>PAGE_SHIFT);
230 up_write(&mm->mmap_sem);
236 sys32_mprotect(unsigned long start, size_t len, unsigned long prot)
238 if (prot & PROT_READ)
239 prot |= vm_force_exec32;
240 return sys_mprotect(start,len,prot);
249 retval = do_pipe(fds);
252 if (copy_to_user(fd, fds, sizeof(fds)))
259 sys32_rt_sigaction(int sig, struct sigaction32 *act,
260 struct sigaction32 *oact, unsigned int sigsetsize)
262 struct k_sigaction new_ka, old_ka;
264 compat_sigset_t set32;
266 /* XXX: Don't preclude handling different sized sigset_t's. */
267 if (sigsetsize != sizeof(compat_sigset_t))
271 compat_uptr_t handler, restorer;
273 if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
274 __get_user(handler, &act->sa_handler) ||
275 __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
276 __get_user(restorer, &act->sa_restorer)||
277 __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t)))
279 new_ka.sa.sa_handler = compat_ptr(handler);
280 new_ka.sa.sa_restorer = compat_ptr(restorer);
281 /* FIXME: here we rely on _COMPAT_NSIG_WORS to be >= than _NSIG_WORDS << 1 */
282 switch (_NSIG_WORDS) {
283 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6]
284 | (((long)set32.sig[7]) << 32);
285 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4]
286 | (((long)set32.sig[5]) << 32);
287 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2]
288 | (((long)set32.sig[3]) << 32);
289 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0]
290 | (((long)set32.sig[1]) << 32);
294 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
297 /* FIXME: here we rely on _COMPAT_NSIG_WORS to be >= than _NSIG_WORDS << 1 */
298 switch (_NSIG_WORDS) {
300 set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32);
301 set32.sig[6] = old_ka.sa.sa_mask.sig[3];
303 set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32);
304 set32.sig[4] = old_ka.sa.sa_mask.sig[2];
306 set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32);
307 set32.sig[2] = old_ka.sa.sa_mask.sig[1];
309 set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32);
310 set32.sig[0] = old_ka.sa.sa_mask.sig[0];
312 if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
313 __put_user((long)old_ka.sa.sa_handler, &oact->sa_handler) ||
314 __put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer) ||
315 __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
316 __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t)))
324 sys32_sigaction (int sig, struct old_sigaction32 *act, struct old_sigaction32 *oact)
326 struct k_sigaction new_ka, old_ka;
330 compat_old_sigset_t mask;
331 compat_uptr_t handler, restorer;
333 if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
334 __get_user(handler, &act->sa_handler) ||
335 __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
336 __get_user(restorer, &act->sa_restorer) ||
337 __get_user(mask, &act->sa_mask))
340 new_ka.sa.sa_handler = compat_ptr(handler);
341 new_ka.sa.sa_restorer = compat_ptr(restorer);
343 siginitset(&new_ka.sa.sa_mask, mask);
346 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
349 if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
350 __put_user((long)old_ka.sa.sa_handler, &oact->sa_handler) ||
351 __put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer) ||
352 __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
353 __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
361 sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
362 compat_sigset_t __user *oset, unsigned int sigsetsize)
367 mm_segment_t old_fs = get_fs();
370 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
372 switch (_NSIG_WORDS) {
373 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
374 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
375 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
376 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
380 ret = sys_rt_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL,
385 switch (_NSIG_WORDS) {
386 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
387 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
388 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
389 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
391 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
398 get_tv32(struct timeval *o, struct compat_timeval *i)
401 if (access_ok(VERIFY_READ, i, sizeof(*i))) {
402 err = __get_user(o->tv_sec, &i->tv_sec);
403 err |= __get_user(o->tv_usec, &i->tv_usec);
409 put_tv32(struct compat_timeval *o, struct timeval *i)
412 if (access_ok(VERIFY_WRITE, o, sizeof(*o))) {
413 err = __put_user(i->tv_sec, &o->tv_sec);
414 err |= __put_user(i->tv_usec, &o->tv_usec);
419 extern int do_setitimer(int which, struct itimerval *, struct itimerval *);
422 sys32_alarm(unsigned int seconds)
424 struct itimerval it_new, it_old;
425 unsigned int oldalarm;
427 it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
428 it_new.it_value.tv_sec = seconds;
429 it_new.it_value.tv_usec = 0;
430 do_setitimer(ITIMER_REAL, &it_new, &it_old);
431 oldalarm = it_old.it_value.tv_sec;
432 /* ehhh.. We can't return 0 if we have an alarm pending.. */
433 /* And we'd better return too much than too little anyway */
434 if (it_old.it_value.tv_usec)
439 /* Translations due to time_t size differences. Which affects all
440 sorts of things, like timeval and itimerval. */
442 extern struct timezone sys_tz;
445 sys32_gettimeofday(struct compat_timeval *tv, struct timezone *tz)
449 do_gettimeofday(&ktv);
450 if (put_tv32(tv, &ktv))
454 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
461 sys32_settimeofday(struct compat_timeval *tv, struct timezone *tz)
468 if (get_tv32(&ktv, tv))
470 kts.tv_sec = ktv.tv_sec;
471 kts.tv_nsec = ktv.tv_usec * NSEC_PER_USEC;
474 if (copy_from_user(&ktz, tz, sizeof(ktz)))
478 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
481 struct linux32_dirent {
488 struct old_linux32_dirent {
495 struct getdents32_callback {
496 struct linux32_dirent * current_dir;
497 struct linux32_dirent * previous;
502 struct readdir32_callback {
503 struct old_linux32_dirent * dirent;
508 filldir32 (void *__buf, const char *name, int namlen, loff_t offset, ino_t ino,
511 struct linux32_dirent * dirent;
512 struct getdents32_callback * buf = (struct getdents32_callback *) __buf;
513 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 2, 4);
515 buf->error = -EINVAL; /* only used if we fail.. */
516 if (reclen > buf->count)
518 dirent = buf->previous;
520 put_user(offset, &dirent->d_off);
521 dirent = buf->current_dir;
522 buf->previous = dirent;
523 put_user(ino, &dirent->d_ino);
524 put_user(reclen, &dirent->d_reclen);
525 copy_to_user(dirent->d_name, name, namlen);
526 put_user(0, dirent->d_name + namlen);
527 put_user(d_type, (char *)dirent + reclen - 1);
528 dirent = ((void *)dirent) + reclen;
529 buf->current_dir = dirent;
530 buf->count -= reclen;
535 sys32_getdents (unsigned int fd, void * dirent, unsigned int count)
538 struct linux32_dirent * lastdirent;
539 struct getdents32_callback buf;
547 buf.current_dir = (struct linux32_dirent *) dirent;
552 error = vfs_readdir(file, filldir32, &buf);
556 lastdirent = buf.previous;
558 put_user(file->f_pos, &lastdirent->d_off);
559 error = count - buf.count;
569 fillonedir32 (void * __buf, const char * name, int namlen, loff_t offset, ino_t ino, unsigned d_type)
571 struct readdir32_callback * buf = (struct readdir32_callback *) __buf;
572 struct old_linux32_dirent * dirent;
577 dirent = buf->dirent;
578 put_user(ino, &dirent->d_ino);
579 put_user(offset, &dirent->d_offset);
580 put_user(namlen, &dirent->d_namlen);
581 copy_to_user(dirent->d_name, name, namlen);
582 put_user(0, dirent->d_name + namlen);
587 sys32_oldreaddir (unsigned int fd, void * dirent, unsigned int count)
591 struct readdir32_callback buf;
601 error = vfs_readdir(file, fillonedir32, &buf);
610 * We can actually return ERESTARTSYS instead of EINTR, but I'd
611 * like to be certain this leads to no problems. So I return
612 * EINTR just for safety.
614 * Update: ERESTARTSYS breaks at least the xview clock binary, so
615 * I'm trying ERESTARTNOHAND which restart only when you want to.
617 #define MAX_SELECT_SECONDS \
618 ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
619 #define ROUND_UP_TIME(x,y) (((x)+(y)-1)/(y))
622 sys32_select(int n, fd_set *inp, fd_set *outp, fd_set *exp, struct compat_timeval *tvp32)
629 timeout = MAX_SCHEDULE_TIMEOUT;
633 get_user(sec, &tvp32->tv_sec);
634 get_user(usec, &tvp32->tv_usec);
637 if (sec < 0 || usec < 0)
640 if ((unsigned long) sec < MAX_SELECT_SECONDS) {
641 timeout = ROUND_UP_TIME(usec, 1000000/HZ);
642 timeout += sec * (unsigned long) HZ;
650 if (n > current->files->max_fdset)
651 n = current->files->max_fdset;
654 * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
655 * since we used fdset we need to allocate memory in units of
660 bits = kmalloc(6 * size, GFP_KERNEL);
663 fds.in = (unsigned long *) bits;
664 fds.out = (unsigned long *) (bits + size);
665 fds.ex = (unsigned long *) (bits + 2*size);
666 fds.res_in = (unsigned long *) (bits + 3*size);
667 fds.res_out = (unsigned long *) (bits + 4*size);
668 fds.res_ex = (unsigned long *) (bits + 5*size);
670 if ((ret = get_fd_set(n, inp, fds.in)) ||
671 (ret = get_fd_set(n, outp, fds.out)) ||
672 (ret = get_fd_set(n, exp, fds.ex)))
674 zero_fd_set(n, fds.res_in);
675 zero_fd_set(n, fds.res_out);
676 zero_fd_set(n, fds.res_ex);
678 ret = do_select(n, &fds, &timeout);
680 if (tvp32 && !(current->personality & STICKY_TIMEOUTS)) {
681 time_t sec = 0, usec = 0;
685 usec *= (1000000/HZ);
687 put_user(sec, (int *)&tvp32->tv_sec);
688 put_user(usec, (int *)&tvp32->tv_usec);
694 ret = -ERESTARTNOHAND;
695 if (signal_pending(current))
700 set_fd_set(n, inp, fds.res_in);
701 set_fd_set(n, outp, fds.res_out);
702 set_fd_set(n, exp, fds.res_ex);
710 struct sel_arg_struct {
719 sys32_old_select(struct sel_arg_struct *arg)
721 struct sel_arg_struct a;
723 if (copy_from_user(&a, arg, sizeof(a)))
725 return sys32_select(a.n, (fd_set *)A(a.inp), (fd_set *)A(a.outp), (fd_set *)A(a.exp),
726 (struct compat_timeval *)A(a.tvp));
729 static struct iovec *
730 get_compat_iovec(struct compat_iovec *iov32, struct iovec *iov_buf, u32 *count, int type, int *errp)
734 struct iovec *ivp, *iov;
735 unsigned long totlen;
737 /* Get the "struct iovec" from user memory */
743 if (*count > UIO_MAXIOV)
744 return(struct iovec *)0;
746 if(verify_area(VERIFY_READ, iov32, sizeof(struct compat_iovec)*(*count)))
747 return(struct iovec *)0;
748 if (*count > UIO_FASTIOV) {
750 iov = kmalloc(*count*sizeof(struct iovec), GFP_KERNEL);
752 return((struct iovec *)0);
758 for (i = 0; i < *count; i++) {
759 *errp = __get_user(len, &iov32->iov_len) |
760 __get_user(buf, &iov32->iov_base);
763 *errp = verify_area(type, (void *)A(buf), len);
775 if ((totlen += len) >= 0x7fffffff)
777 ivp->iov_base = (void *)A(buf);
778 ivp->iov_len = (__kernel_size_t)len;
792 sys32_readv(int fd, struct compat_iovec *vector, u32 count)
794 struct iovec iovstack[UIO_FASTIOV];
797 mm_segment_t old_fs = get_fs();
799 if ((iov = get_compat_iovec(vector, iovstack, &count, VERIFY_WRITE, &ret)) == NULL)
802 ret = sys_readv(fd, iov, count);
810 sys32_writev(int fd, struct compat_iovec *vector, u32 count)
812 struct iovec iovstack[UIO_FASTIOV];
815 mm_segment_t old_fs = get_fs();
817 if ((iov = get_compat_iovec(vector, iovstack, &count, VERIFY_READ, &ret)) == NULL)
820 ret = sys_writev(fd, iov, count);
828 * sys_time() can be implemented in user-level using
829 * sys_gettimeofday(). x86-64 did this but i386 Linux did not
830 * so we have to implement this system call here.
832 asmlinkage long sys32_time(int * tloc)
837 do_gettimeofday(&tv);
841 if (put_user(i,tloc))
847 extern asmlinkage long
848 compat_sys_wait4(compat_pid_t pid, compat_uint_t * stat_addr, int options,
849 struct compat_rusage *ru);
852 sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, int options)
854 return compat_sys_wait4(pid, stat_addr, options, NULL);
857 int sys32_ni_syscall(int call)
859 struct task_struct *me = current;
860 static char lastcomm[8];
861 if (strcmp(lastcomm, me->comm)) {
862 printk(KERN_INFO "IA32 syscall %d from %s not implemented\n", call,
864 strcpy(lastcomm, me->comm);
869 /* 32-bit timeval and related flotsam. */
872 sys32_sysfs(int option, u32 arg1, u32 arg2)
874 return sys_sysfs(option, arg1, arg2);
886 unsigned short procs;
891 char _f[20-2*sizeof(u32)-sizeof(int)];
895 sys32_sysinfo(struct sysinfo32 *info)
899 mm_segment_t old_fs = get_fs ();
903 ret = sys_sysinfo(&s);
906 /* Check to see if any memory value is too large for 32-bit and scale
909 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
910 while (s.mem_unit < PAGE_SIZE) {
914 s.totalram >>= bitcount;
915 s.freeram >>= bitcount;
916 s.sharedram >>= bitcount;
917 s.bufferram >>= bitcount;
918 s.totalswap >>= bitcount;
919 s.freeswap >>= bitcount;
920 s.totalhigh >>= bitcount;
921 s.freehigh >>= bitcount;
924 if (verify_area(VERIFY_WRITE, info, sizeof(struct sysinfo32)) ||
925 __put_user (s.uptime, &info->uptime) ||
926 __put_user (s.loads[0], &info->loads[0]) ||
927 __put_user (s.loads[1], &info->loads[1]) ||
928 __put_user (s.loads[2], &info->loads[2]) ||
929 __put_user (s.totalram, &info->totalram) ||
930 __put_user (s.freeram, &info->freeram) ||
931 __put_user (s.sharedram, &info->sharedram) ||
932 __put_user (s.bufferram, &info->bufferram) ||
933 __put_user (s.totalswap, &info->totalswap) ||
934 __put_user (s.freeswap, &info->freeswap) ||
935 __put_user (s.procs, &info->procs) ||
936 __put_user (s.totalhigh, &info->totalhigh) ||
937 __put_user (s.freehigh, &info->freehigh) ||
938 __put_user (s.mem_unit, &info->mem_unit))
944 sys32_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec *interval)
948 mm_segment_t old_fs = get_fs ();
951 ret = sys_sched_rr_get_interval(pid, &t);
953 if (put_compat_timespec(&t, interval))
959 sys32_rt_sigpending(compat_sigset_t __user *set, compat_size_t sigsetsize)
964 mm_segment_t old_fs = get_fs();
967 ret = sys_rt_sigpending(&s, sigsetsize);
970 switch (_NSIG_WORDS) {
971 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
972 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
973 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
974 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
976 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
984 sys32_rt_sigtimedwait(compat_sigset_t *uthese, siginfo_t32 *uinfo,
985 struct compat_timespec *uts, compat_size_t sigsetsize)
991 mm_segment_t old_fs = get_fs();
994 if (copy_from_user (&s32, uthese, sizeof(compat_sigset_t)))
996 switch (_NSIG_WORDS) {
997 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
998 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
999 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
1000 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
1002 if (uts && get_compat_timespec(&t, uts))
1005 /* stop data leak to user space in case of structure fill mismatch
1006 * between sys_rt_sigtimedwait & ia32_copy_siginfo_to_user.
1008 memset(&info, 0, sizeof(info));
1011 ret = sys_rt_sigtimedwait(&s, uinfo ? &info : NULL, uts ? &t : NULL,
1014 if (ret >= 0 && uinfo) {
1015 if (ia32_copy_siginfo_to_user(uinfo, &info))
1022 sys32_rt_sigqueueinfo(int pid, int sig, siginfo_t32 *uinfo)
1026 mm_segment_t old_fs = get_fs();
1028 if (ia32_copy_siginfo_from_user(&info, uinfo))
1031 ret = sys_rt_sigqueueinfo(pid, sig, &info);
1036 /* These are here just in case some old ia32 binary calls it. */
1040 current->state = TASK_INTERRUPTIBLE;
1042 return -ERESTARTNOHAND;
1046 struct sysctl_ia32 {
1049 unsigned int oldval;
1050 unsigned int oldlenp;
1051 unsigned int newval;
1052 unsigned int newlen;
1053 unsigned int __unused[4];
1058 sys32_sysctl(struct sysctl_ia32 *args32)
1060 #ifndef CONFIG_SYSCTL
1063 struct sysctl_ia32 a32;
1064 mm_segment_t old_fs = get_fs ();
1065 void *oldvalp, *newvalp;
1069 extern int do_sysctl(int *name, int nlen, void *oldval, size_t *oldlenp,
1070 void *newval, size_t newlen);
1073 if (copy_from_user(&a32, args32, sizeof (a32)))
1077 * We need to pre-validate these because we have to disable address checking
1078 * before calling do_sysctl() because of OLDLEN but we can't run the risk of the
1079 * user specifying bad addresses here. Well, since we're dealing with 32 bit
1080 * addresses, we KNOW that access_ok() will always succeed, so this is an
1081 * expensive NOP, but so what...
1083 namep = (int *) A(a32.name);
1084 oldvalp = (void *) A(a32.oldval);
1085 newvalp = (void *) A(a32.newval);
1087 if ((oldvalp && get_user(oldlen, (int *) A(a32.oldlenp)))
1088 || !access_ok(VERIFY_WRITE, namep, 0)
1089 || !access_ok(VERIFY_WRITE, oldvalp, 0)
1090 || !access_ok(VERIFY_WRITE, newvalp, 0))
1095 ret = do_sysctl(namep, a32.nlen, oldvalp, &oldlen, newvalp, (size_t) a32.newlen);
1099 if (oldvalp && put_user (oldlen, (int *) A(a32.oldlenp)))
1106 /* warning: next two assume little endian */
1108 sys32_pread(unsigned int fd, char *ubuf, u32 count, u32 poslo, u32 poshi)
1110 return sys_pread64(fd, ubuf, count,
1111 ((loff_t)AA(poshi) << 32) | AA(poslo));
1115 sys32_pwrite(unsigned int fd, char *ubuf, u32 count, u32 poslo, u32 poshi)
1117 return sys_pwrite64(fd, ubuf, count,
1118 ((loff_t)AA(poshi) << 32) | AA(poslo));
1123 sys32_personality(unsigned long personality)
1126 if (personality(current->personality) == PER_LINUX32 &&
1127 personality == PER_LINUX)
1128 personality = PER_LINUX32;
1129 ret = sys_personality(personality);
1130 if (ret == PER_LINUX32)
1136 sys32_sendfile(int out_fd, int in_fd, compat_off_t *offset, s32 count)
1138 mm_segment_t old_fs = get_fs();
1142 if (offset && get_user(of, offset))
1146 ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count);
1149 if (!ret && offset && put_user(of, offset))
1155 /* Handle adjtimex compatibility. */
1159 s32 offset, freq, maxerror, esterror;
1160 s32 status, constant, precision, tolerance;
1161 struct compat_timeval time;
1163 s32 ppsfreq, jitter, shift, stabil;
1164 s32 jitcnt, calcnt, errcnt, stbcnt;
1165 s32 :32; s32 :32; s32 :32; s32 :32;
1166 s32 :32; s32 :32; s32 :32; s32 :32;
1167 s32 :32; s32 :32; s32 :32; s32 :32;
1170 extern int do_adjtimex(struct timex *);
1173 sys32_adjtimex(struct timex32 *utp)
1178 memset(&txc, 0, sizeof(struct timex));
1180 if(verify_area(VERIFY_READ, utp, sizeof(struct timex32)) ||
1181 __get_user(txc.modes, &utp->modes) ||
1182 __get_user(txc.offset, &utp->offset) ||
1183 __get_user(txc.freq, &utp->freq) ||
1184 __get_user(txc.maxerror, &utp->maxerror) ||
1185 __get_user(txc.esterror, &utp->esterror) ||
1186 __get_user(txc.status, &utp->status) ||
1187 __get_user(txc.constant, &utp->constant) ||
1188 __get_user(txc.precision, &utp->precision) ||
1189 __get_user(txc.tolerance, &utp->tolerance) ||
1190 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1191 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1192 __get_user(txc.tick, &utp->tick) ||
1193 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
1194 __get_user(txc.jitter, &utp->jitter) ||
1195 __get_user(txc.shift, &utp->shift) ||
1196 __get_user(txc.stabil, &utp->stabil) ||
1197 __get_user(txc.jitcnt, &utp->jitcnt) ||
1198 __get_user(txc.calcnt, &utp->calcnt) ||
1199 __get_user(txc.errcnt, &utp->errcnt) ||
1200 __get_user(txc.stbcnt, &utp->stbcnt))
1203 ret = do_adjtimex(&txc);
1205 if(verify_area(VERIFY_WRITE, utp, sizeof(struct timex32)) ||
1206 __put_user(txc.modes, &utp->modes) ||
1207 __put_user(txc.offset, &utp->offset) ||
1208 __put_user(txc.freq, &utp->freq) ||
1209 __put_user(txc.maxerror, &utp->maxerror) ||
1210 __put_user(txc.esterror, &utp->esterror) ||
1211 __put_user(txc.status, &utp->status) ||
1212 __put_user(txc.constant, &utp->constant) ||
1213 __put_user(txc.precision, &utp->precision) ||
1214 __put_user(txc.tolerance, &utp->tolerance) ||
1215 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
1216 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
1217 __put_user(txc.tick, &utp->tick) ||
1218 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
1219 __put_user(txc.jitter, &utp->jitter) ||
1220 __put_user(txc.shift, &utp->shift) ||
1221 __put_user(txc.stabil, &utp->stabil) ||
1222 __put_user(txc.jitcnt, &utp->jitcnt) ||
1223 __put_user(txc.calcnt, &utp->calcnt) ||
1224 __put_user(txc.errcnt, &utp->errcnt) ||
1225 __put_user(txc.stbcnt, &utp->stbcnt))
1231 asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len,
1232 unsigned long prot, unsigned long flags,
1233 unsigned long fd, unsigned long pgoff)
1235 struct mm_struct *mm = current->mm;
1236 unsigned long error;
1237 struct file * file = NULL;
1239 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
1240 if (!(flags & MAP_ANONYMOUS)) {
1246 if (prot & PROT_READ)
1247 prot |= vm_force_exec32;
1249 down_write(&mm->mmap_sem);
1250 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
1251 up_write(&mm->mmap_sem);
1258 asmlinkage long sys32_olduname(struct oldold_utsname * name)
1264 if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
1267 down_read(&uts_sem);
1269 error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
1270 __put_user(0,name->sysname+__OLD_UTS_LEN);
1271 __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
1272 __put_user(0,name->nodename+__OLD_UTS_LEN);
1273 __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
1274 __put_user(0,name->release+__OLD_UTS_LEN);
1275 __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
1276 __put_user(0,name->version+__OLD_UTS_LEN);
1278 char *arch = "x86_64";
1279 if (personality(current->personality) == PER_LINUX32)
1282 __copy_to_user(&name->machine,arch,strlen(arch)+1);
1287 error = error ? -EFAULT : 0;
1292 long sys32_uname(struct old_utsname * name)
1297 down_read(&uts_sem);
1298 err=copy_to_user(name, &system_utsname, sizeof (*name));
1300 if (personality(current->personality) == PER_LINUX32)
1301 err |= copy_to_user(&name->machine, "i686", 5);
1302 return err?-EFAULT:0;
1305 long sys32_ustat(unsigned dev, struct ustat32 __user *u32p)
1313 ret = sys_ustat(dev,&u);
1316 if (!access_ok(VERIFY_WRITE,u32p,sizeof(struct ustat32)) ||
1317 __put_user((__u32) u.f_tfree, &u32p->f_tfree) ||
1318 __put_user((__u32) u.f_tinode, &u32p->f_tfree) ||
1319 __copy_to_user(&u32p->f_fname, u.f_fname, sizeof(u.f_fname)) ||
1320 __copy_to_user(&u32p->f_fpack, u.f_fpack, sizeof(u.f_fpack)))
1326 static int nargs(u32 src, char **dst)
1333 int ret = get_user(val, (__u32 *)(u64)src);
1337 dst[cnt] = (char *)(u64)val;
1340 if (cnt >= (MAX_ARG_PAGES*PAGE_SIZE)/sizeof(void*))
1348 asmlinkage long sys32_execve(char *name, u32 argv, u32 envp, struct pt_regs regs)
1350 mm_segment_t oldseg;
1357 na = nargs(argv, NULL);
1362 ne = nargs(envp, NULL);
1368 sz = (na+ne)*sizeof(void *);
1372 buf = kmalloc(sz, GFP_KERNEL);
1378 ret = nargs(argv, buf);
1384 ret = nargs(envp, buf + na);
1389 name = getname(name);
1390 ret = PTR_ERR(name);
1396 ret = do_execve(name, argv ? buf : NULL, envp ? buf+na : NULL, ®s);
1400 current->ptrace &= ~PT_DTRACE;
1414 asmlinkage long sys32_clone(unsigned int clone_flags, unsigned int newsp, struct pt_regs regs)
1416 void *parent_tid = (void *)regs.rdx;
1417 void *child_tid = (void *)regs.rdi;
1420 return do_fork(clone_flags & ~CLONE_IDLETASK, newsp, ®s, 0,
1421 parent_tid, child_tid);
1425 * Some system calls that need sign extended arguments. This could be done by a generic wrapper.
1428 long sys32_lseek (unsigned int fd, int offset, unsigned int whence)
1430 return sys_lseek(fd, offset, whence);
1433 long sys32_kill(int pid, int sig)
1435 return sys_kill(pid, sig);
1439 #if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)
1440 /* Stuff for NFS server syscalls... */
1441 struct nfsctl_svc32 {
1446 struct nfsctl_client32 {
1447 s8 cl32_ident[NFSCLNT_IDMAX+1];
1449 struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX];
1452 u8 cl32_fhkey[NFSCLNT_KEYMAX];
1455 struct nfsctl_export32 {
1456 s8 ex32_client[NFSCLNT_IDMAX+1];
1457 s8 ex32_path[NFS_MAXPATHLEN+1];
1458 compat_dev_t ex32_dev;
1459 compat_ino_t ex32_ino;
1461 compat_pid_t ex32_anon_uid;
1462 compat_gid_t ex32_anon_gid;
1465 struct nfsctl_fdparm32 {
1466 struct sockaddr gd32_addr;
1467 s8 gd32_path[NFS_MAXPATHLEN+1];
1471 struct nfsctl_fsparm32 {
1472 struct sockaddr gd32_addr;
1473 s8 gd32_path[NFS_MAXPATHLEN+1];
1477 struct nfsctl_arg32 {
1478 s32 ca32_version; /* safeguard */
1480 struct nfsctl_svc32 u32_svc;
1481 struct nfsctl_client32 u32_client;
1482 struct nfsctl_export32 u32_export;
1483 struct nfsctl_fdparm32 u32_getfd;
1484 struct nfsctl_fsparm32 u32_getfs;
1486 #define ca32_svc u.u32_svc
1487 #define ca32_client u.u32_client
1488 #define ca32_export u.u32_export
1489 #define ca32_getfd u.u32_getfd
1490 #define ca32_getfs u.u32_getfs
1493 union nfsctl_res32 {
1494 __u8 cr32_getfh[NFS_FHSIZE];
1495 struct knfsd_fh cr32_getfs;
1498 static int nfs_svc32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
1502 err = get_user(karg->ca_version, &arg32->ca32_version);
1503 err |= __get_user(karg->ca_svc.svc_port, &arg32->ca32_svc.svc32_port);
1504 err |= __get_user(karg->ca_svc.svc_nthreads, &arg32->ca32_svc.svc32_nthreads);
1508 static int nfs_clnt32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
1512 err = get_user(karg->ca_version, &arg32->ca32_version);
1513 err |= copy_from_user(&karg->ca_client.cl_ident[0],
1514 &arg32->ca32_client.cl32_ident[0],
1516 err |= __get_user(karg->ca_client.cl_naddr, &arg32->ca32_client.cl32_naddr);
1517 err |= copy_from_user(&karg->ca_client.cl_addrlist[0],
1518 &arg32->ca32_client.cl32_addrlist[0],
1519 (sizeof(struct in_addr) * NFSCLNT_ADDRMAX));
1520 err |= __get_user(karg->ca_client.cl_fhkeytype,
1521 &arg32->ca32_client.cl32_fhkeytype);
1522 err |= __get_user(karg->ca_client.cl_fhkeylen,
1523 &arg32->ca32_client.cl32_fhkeylen);
1524 err |= copy_from_user(&karg->ca_client.cl_fhkey[0],
1525 &arg32->ca32_client.cl32_fhkey[0],
1530 static int nfs_exp32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
1534 err = get_user(karg->ca_version, &arg32->ca32_version);
1535 err |= copy_from_user(&karg->ca_export.ex_client[0],
1536 &arg32->ca32_export.ex32_client[0],
1538 err |= copy_from_user(&karg->ca_export.ex_path[0],
1539 &arg32->ca32_export.ex32_path[0],
1541 err |= __get_user(karg->ca_export.ex_dev,
1542 &arg32->ca32_export.ex32_dev);
1543 err |= __get_user(karg->ca_export.ex_ino,
1544 &arg32->ca32_export.ex32_ino);
1545 err |= __get_user(karg->ca_export.ex_flags,
1546 &arg32->ca32_export.ex32_flags);
1547 err |= __get_user(karg->ca_export.ex_anon_uid,
1548 &arg32->ca32_export.ex32_anon_uid);
1549 err |= __get_user(karg->ca_export.ex_anon_gid,
1550 &arg32->ca32_export.ex32_anon_gid);
1551 SET_UID(karg->ca_export.ex_anon_uid, karg->ca_export.ex_anon_uid);
1552 SET_GID(karg->ca_export.ex_anon_gid, karg->ca_export.ex_anon_gid);
1557 static int nfs_getfd32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
1561 err = get_user(karg->ca_version, &arg32->ca32_version);
1562 err |= copy_from_user(&karg->ca_getfd.gd_addr,
1563 &arg32->ca32_getfd.gd32_addr,
1564 (sizeof(struct sockaddr)));
1565 err |= copy_from_user(&karg->ca_getfd.gd_path,
1566 &arg32->ca32_getfd.gd32_path,
1567 (NFS_MAXPATHLEN+1));
1568 err |= get_user(karg->ca_getfd.gd_version,
1569 &arg32->ca32_getfd.gd32_version);
1573 static int nfs_getfs32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
1577 err = get_user(karg->ca_version, &arg32->ca32_version);
1578 err |= copy_from_user(&karg->ca_getfs.gd_addr,
1579 &arg32->ca32_getfs.gd32_addr,
1580 (sizeof(struct sockaddr)));
1581 err |= copy_from_user(&karg->ca_getfs.gd_path,
1582 &arg32->ca32_getfs.gd32_path,
1583 (NFS_MAXPATHLEN+1));
1584 err |= get_user(karg->ca_getfs.gd_maxlen,
1585 &arg32->ca32_getfs.gd32_maxlen);
1589 /* This really doesn't need translations, we are only passing
1590 * back a union which contains opaque nfs file handle data.
1592 static int nfs_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32)
1594 return copy_to_user(res32, kres, sizeof(*res32)) ? -EFAULT : 0;
1597 long asmlinkage sys32_nfsservctl(int cmd, struct nfsctl_arg32 *arg32, union nfsctl_res32 *res32)
1599 struct nfsctl_arg *karg = NULL;
1600 union nfsctl_res *kres = NULL;
1604 karg = kmalloc(sizeof(*karg), GFP_USER);
1608 kres = kmalloc(sizeof(*kres), GFP_USER);
1616 err = nfs_svc32_trans(karg, arg32);
1618 case NFSCTL_ADDCLIENT:
1619 err = nfs_clnt32_trans(karg, arg32);
1621 case NFSCTL_DELCLIENT:
1622 err = nfs_clnt32_trans(karg, arg32);
1625 case NFSCTL_UNEXPORT:
1626 err = nfs_exp32_trans(karg, arg32);
1629 err = nfs_getfd32_trans(karg, arg32);
1632 err = nfs_getfs32_trans(karg, arg32);
1642 err = sys_nfsservctl(cmd, karg, kres);
1648 if((cmd == NFSCTL_GETFD) ||
1649 (cmd == NFSCTL_GETFS))
1650 err = nfs_getfh32_res_trans(kres, res32);
1660 long asmlinkage sys32_nfsservctl(int cmd, void *notused, void *notused2)
1662 return sys_ni_syscall();
1666 long sys32_io_setup(unsigned nr_reqs, u32 *ctx32p)
1669 aio_context_t ctx64;
1670 mm_segment_t oldfs = get_fs();
1672 ret = sys_io_setup(nr_reqs, &ctx64);
1674 /* truncating is ok because it's a user address */
1676 ret = put_user((u32)ctx64, ctx32p);
1680 asmlinkage long sys32_io_submit(aio_context_t ctx_id, int nr,
1681 compat_uptr_t *iocbpp)
1687 if (unlikely(nr < 0))
1690 if (unlikely(!access_ok(VERIFY_READ, iocbpp, (nr*sizeof(*iocbpp)))))
1693 ctx = lookup_ioctx(ctx_id);
1694 if (unlikely(!ctx)) {
1695 pr_debug("EINVAL: io_submit: invalid context id\n");
1699 for (i=0; i<nr; i++) {
1701 struct iocb *user_iocb, tmp;
1703 if (unlikely(__get_user(p32, iocbpp + i))) {
1707 user_iocb = compat_ptr(p32);
1709 if (unlikely(copy_from_user(&tmp, user_iocb, sizeof(tmp)))) {
1714 ret = io_submit_one(ctx, user_iocb, &tmp);
1724 asmlinkage long sys32_io_getevents(aio_context_t ctx_id,
1725 unsigned long min_nr,
1727 struct io_event *events,
1728 struct compat_timespec *timeout)
1733 /* Harden against bogus ptrace */
1734 if (nr >= 0xffffffff ||
1735 !access_ok(VERIFY_WRITE, events, nr * sizeof(struct io_event)))
1737 if (timeout && get_compat_timespec(&t, timeout))
1741 ret = sys_io_getevents(ctx_id,min_nr,nr,events,timeout ? &t : NULL);
1743 if (!ret && timeout && put_compat_timespec(&t, timeout))
1748 asmlinkage long sys32_open(const char * filename, int flags, int mode)
1753 /* don't force O_LARGEFILE */
1754 tmp = getname(filename);
1757 fd = get_unused_fd();
1759 struct file *f = filp_open(tmp, flags, mode);
1761 if (unlikely(IS_ERR(f))) {
1776 u32 payload[(64 / 4) - 3];
1779 extern asmlinkage long
1780 sys_timer_create(clockid_t which_clock,
1781 struct sigevent __user *timer_event_spec,
1782 timer_t __user * created_timer_id);
1785 sys32_timer_create(u32 clock, struct sigevent32 *se32, timer_t *timer_id)
1792 memset(&se, 0, sizeof(struct sigevent));
1793 if (get_user(se.sigev_value.sival_int, &se32->sigev_value) ||
1794 __get_user(se.sigev_signo, &se32->sigev_signo) ||
1795 __get_user(se.sigev_notify, &se32->sigev_notify) ||
1796 __copy_from_user(&se._sigev_un._pad, &se32->payload,
1797 sizeof(se32->payload)))
1800 if (!access_ok(VERIFY_WRITE,timer_id,sizeof(timer_t)))
1805 err = sys_timer_create(clock, se32 ? &se : NULL, timer_id);
1811 long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high,
1812 __u32 len_low, __u32 len_high, int advice)
1814 return sys_fadvise64_64(fd,
1815 (((u64)offset_high)<<32) | offset_low,
1816 (((u64)len_high)<<32) | len_low,
1820 long sys32_vm86_warning(void)
1822 struct task_struct *me = current;
1823 static char lastcomm[8];
1824 if (strcmp(lastcomm, me->comm)) {
1825 printk(KERN_INFO "%s: vm86 mode not supported on 64 bit kernel\n",
1827 strcpy(lastcomm, me->comm);
1832 long sys32_quotactl(void)
1834 struct task_struct *me = current;
1835 static char lastcomm[8];
1836 if (strcmp(lastcomm, me->comm)) {
1837 printk(KERN_INFO "%s: 32bit quotactl not supported on 64 bit kernel\n",
1839 strcpy(lastcomm, me->comm);
1844 cond_syscall(sys32_ipc)
1846 static int __init ia32_init (void)
1848 printk("IA32 emulation $Id: sys_ia32.c,v 1.32 2002/03/24 13:02:28 ak Exp $\n");
1852 __initcall(ia32_init);
1854 extern unsigned long ia32_sys_call_table[];
1855 EXPORT_SYMBOL(ia32_sys_call_table);