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 __user *) (de)))
81 int cp_compat_stat(struct kstat *kbuf, struct compat_stat __user *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 __user * 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 __user *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 __user * filename, struct stat64 __user *statbuf)
160 int ret = vfs_stat(filename, &stat);
162 ret = cp_stat64(statbuf, &stat);
167 sys32_lstat64(char __user * filename, struct stat64 __user *statbuf)
170 int ret = vfs_lstat(filename, &stat);
172 ret = cp_stat64(statbuf, &stat);
177 sys32_fstat64(unsigned int fd, struct stat64 __user *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 __user *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)) {
222 down_write(&mm->mmap_sem);
223 retval = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, a.offset>>PAGE_SHIFT);
227 up_write(&mm->mmap_sem);
233 sys32_mprotect(unsigned long start, size_t len, unsigned long prot)
235 return sys_mprotect(start,len,prot);
239 sys32_pipe(int __user *fd)
244 retval = do_pipe(fds);
247 if (copy_to_user(fd, fds, sizeof(fds)))
254 sys32_rt_sigaction(int sig, struct sigaction32 __user *act,
255 struct sigaction32 __user *oact, unsigned int sigsetsize)
257 struct k_sigaction new_ka, old_ka;
259 compat_sigset_t set32;
261 /* XXX: Don't preclude handling different sized sigset_t's. */
262 if (sigsetsize != sizeof(compat_sigset_t))
266 compat_uptr_t handler, restorer;
268 if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
269 __get_user(handler, &act->sa_handler) ||
270 __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
271 __get_user(restorer, &act->sa_restorer)||
272 __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t)))
274 new_ka.sa.sa_handler = compat_ptr(handler);
275 new_ka.sa.sa_restorer = compat_ptr(restorer);
276 /* FIXME: here we rely on _COMPAT_NSIG_WORS to be >= than _NSIG_WORDS << 1 */
277 switch (_NSIG_WORDS) {
278 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6]
279 | (((long)set32.sig[7]) << 32);
280 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4]
281 | (((long)set32.sig[5]) << 32);
282 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2]
283 | (((long)set32.sig[3]) << 32);
284 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0]
285 | (((long)set32.sig[1]) << 32);
289 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
292 /* FIXME: here we rely on _COMPAT_NSIG_WORS to be >= than _NSIG_WORDS << 1 */
293 switch (_NSIG_WORDS) {
295 set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32);
296 set32.sig[6] = old_ka.sa.sa_mask.sig[3];
298 set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32);
299 set32.sig[4] = old_ka.sa.sa_mask.sig[2];
301 set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32);
302 set32.sig[2] = old_ka.sa.sa_mask.sig[1];
304 set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32);
305 set32.sig[0] = old_ka.sa.sa_mask.sig[0];
307 if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
308 __put_user((long)old_ka.sa.sa_handler, &oact->sa_handler) ||
309 __put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer) ||
310 __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
311 __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t)))
319 sys32_sigaction (int sig, struct old_sigaction32 __user *act, struct old_sigaction32 __user *oact)
321 struct k_sigaction new_ka, old_ka;
325 compat_old_sigset_t mask;
326 compat_uptr_t handler, restorer;
328 if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
329 __get_user(handler, &act->sa_handler) ||
330 __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
331 __get_user(restorer, &act->sa_restorer) ||
332 __get_user(mask, &act->sa_mask))
335 new_ka.sa.sa_handler = compat_ptr(handler);
336 new_ka.sa.sa_restorer = compat_ptr(restorer);
338 siginitset(&new_ka.sa.sa_mask, mask);
341 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
344 if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
345 __put_user((long)old_ka.sa.sa_handler, &oact->sa_handler) ||
346 __put_user((long)old_ka.sa.sa_restorer, &oact->sa_restorer) ||
347 __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
348 __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
356 sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
357 compat_sigset_t __user *oset, unsigned int sigsetsize)
362 mm_segment_t old_fs = get_fs();
365 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
367 switch (_NSIG_WORDS) {
368 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
369 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
370 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
371 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
375 ret = sys_rt_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL,
380 switch (_NSIG_WORDS) {
381 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
382 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
383 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
384 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
386 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
393 get_tv32(struct timeval *o, struct compat_timeval __user *i)
396 if (access_ok(VERIFY_READ, i, sizeof(*i))) {
397 err = __get_user(o->tv_sec, &i->tv_sec);
398 err |= __get_user(o->tv_usec, &i->tv_usec);
404 put_tv32(struct compat_timeval __user *o, struct timeval *i)
407 if (access_ok(VERIFY_WRITE, o, sizeof(*o))) {
408 err = __put_user(i->tv_sec, &o->tv_sec);
409 err |= __put_user(i->tv_usec, &o->tv_usec);
414 extern int do_setitimer(int which, struct itimerval *, struct itimerval *);
417 sys32_alarm(unsigned int seconds)
419 struct itimerval it_new, it_old;
420 unsigned int oldalarm;
422 it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
423 it_new.it_value.tv_sec = seconds;
424 it_new.it_value.tv_usec = 0;
425 do_setitimer(ITIMER_REAL, &it_new, &it_old);
426 oldalarm = it_old.it_value.tv_sec;
427 /* ehhh.. We can't return 0 if we have an alarm pending.. */
428 /* And we'd better return too much than too little anyway */
429 if (it_old.it_value.tv_usec)
434 /* Translations due to time_t size differences. Which affects all
435 sorts of things, like timeval and itimerval. */
437 extern struct timezone sys_tz;
440 sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
444 do_gettimeofday(&ktv);
445 if (put_tv32(tv, &ktv))
449 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
456 sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
463 if (get_tv32(&ktv, tv))
465 kts.tv_sec = ktv.tv_sec;
466 kts.tv_nsec = ktv.tv_usec * NSEC_PER_USEC;
469 if (copy_from_user(&ktz, tz, sizeof(ktz)))
473 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
476 struct sel_arg_struct {
485 sys32_old_select(struct sel_arg_struct __user *arg)
487 struct sel_arg_struct a;
489 if (copy_from_user(&a, arg, sizeof(a)))
491 return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp),
492 compat_ptr(a.exp), compat_ptr(a.tvp));
496 * sys_time() can be implemented in user-level using
497 * sys_gettimeofday(). x86-64 did this but i386 Linux did not
498 * so we have to implement this system call here.
500 asmlinkage long sys32_time(int __user * tloc)
505 do_gettimeofday(&tv);
509 if (put_user(i,tloc))
515 extern asmlinkage long
516 compat_sys_wait4(compat_pid_t pid, compat_uint_t * stat_addr, int options,
517 struct compat_rusage *ru);
520 sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, int options)
522 return compat_sys_wait4(pid, stat_addr, options, NULL);
525 int sys32_ni_syscall(int call)
527 struct task_struct *me = current;
528 static char lastcomm[sizeof(me->comm)];
530 if (strncmp(lastcomm, me->comm, sizeof(lastcomm))) {
531 printk(KERN_INFO "IA32 syscall %d from %s not implemented\n",
533 strncpy(lastcomm, me->comm, sizeof(lastcomm));
538 /* 32-bit timeval and related flotsam. */
541 sys32_sysfs(int option, u32 arg1, u32 arg2)
543 return sys_sysfs(option, arg1, arg2);
555 unsigned short procs;
560 char _f[20-2*sizeof(u32)-sizeof(int)];
564 sys32_sysinfo(struct sysinfo32 __user *info)
568 mm_segment_t old_fs = get_fs ();
572 ret = sys_sysinfo(&s);
575 /* Check to see if any memory value is too large for 32-bit and scale
578 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
579 while (s.mem_unit < PAGE_SIZE) {
583 s.totalram >>= bitcount;
584 s.freeram >>= bitcount;
585 s.sharedram >>= bitcount;
586 s.bufferram >>= bitcount;
587 s.totalswap >>= bitcount;
588 s.freeswap >>= bitcount;
589 s.totalhigh >>= bitcount;
590 s.freehigh >>= bitcount;
593 if (verify_area(VERIFY_WRITE, info, sizeof(struct sysinfo32)) ||
594 __put_user (s.uptime, &info->uptime) ||
595 __put_user (s.loads[0], &info->loads[0]) ||
596 __put_user (s.loads[1], &info->loads[1]) ||
597 __put_user (s.loads[2], &info->loads[2]) ||
598 __put_user (s.totalram, &info->totalram) ||
599 __put_user (s.freeram, &info->freeram) ||
600 __put_user (s.sharedram, &info->sharedram) ||
601 __put_user (s.bufferram, &info->bufferram) ||
602 __put_user (s.totalswap, &info->totalswap) ||
603 __put_user (s.freeswap, &info->freeswap) ||
604 __put_user (s.procs, &info->procs) ||
605 __put_user (s.totalhigh, &info->totalhigh) ||
606 __put_user (s.freehigh, &info->freehigh) ||
607 __put_user (s.mem_unit, &info->mem_unit))
613 sys32_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
617 mm_segment_t old_fs = get_fs ();
620 ret = sys_sched_rr_get_interval(pid, &t);
622 if (put_compat_timespec(&t, interval))
628 sys32_rt_sigpending(compat_sigset_t __user *set, compat_size_t sigsetsize)
633 mm_segment_t old_fs = get_fs();
636 ret = sys_rt_sigpending(&s, sigsetsize);
639 switch (_NSIG_WORDS) {
640 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
641 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
642 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
643 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
645 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
653 sys32_rt_sigtimedwait(compat_sigset_t __user *uthese, siginfo_t32 __user *uinfo,
654 struct compat_timespec __user *uts, compat_size_t sigsetsize)
660 mm_segment_t old_fs = get_fs();
663 if (copy_from_user (&s32, uthese, sizeof(compat_sigset_t)))
665 switch (_NSIG_WORDS) {
666 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
667 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
668 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
669 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
671 if (uts && get_compat_timespec(&t, uts))
674 /* stop data leak to user space in case of structure fill mismatch
675 * between sys_rt_sigtimedwait & ia32_copy_siginfo_to_user.
677 memset(&info, 0, sizeof(info));
680 ret = sys_rt_sigtimedwait(&s, uinfo ? &info : NULL, uts ? &t : NULL,
683 if (ret >= 0 && uinfo) {
684 if (ia32_copy_siginfo_to_user(uinfo, &info))
691 sys32_rt_sigqueueinfo(int pid, int sig, siginfo_t32 __user *uinfo)
695 mm_segment_t old_fs = get_fs();
697 if (ia32_copy_siginfo_from_user(&info, uinfo))
700 ret = sys_rt_sigqueueinfo(pid, sig, &info);
705 /* These are here just in case some old ia32 binary calls it. */
709 current->state = TASK_INTERRUPTIBLE;
711 return -ERESTARTNOHAND;
719 unsigned int oldlenp;
722 unsigned int __unused[4];
727 sys32_sysctl(struct sysctl_ia32 __user *args32)
729 #ifndef CONFIG_SYSCTL
732 struct sysctl_ia32 a32;
733 mm_segment_t old_fs = get_fs ();
734 void *oldvalp, *newvalp;
738 extern int do_sysctl(int *name, int nlen, void *oldval, size_t *oldlenp,
739 void *newval, size_t newlen);
742 if (copy_from_user(&a32, args32, sizeof (a32)))
746 * We need to pre-validate these because we have to disable address checking
747 * before calling do_sysctl() because of OLDLEN but we can't run the risk of the
748 * user specifying bad addresses here. Well, since we're dealing with 32 bit
749 * addresses, we KNOW that access_ok() will always succeed, so this is an
750 * expensive NOP, but so what...
752 namep = (int *) A(a32.name);
753 oldvalp = (void *) A(a32.oldval);
754 newvalp = (void *) A(a32.newval);
756 if ((oldvalp && get_user(oldlen, (int __user *)compat_ptr(a32.oldlenp)))
757 || !access_ok(VERIFY_WRITE, namep, 0)
758 || !access_ok(VERIFY_WRITE, oldvalp, 0)
759 || !access_ok(VERIFY_WRITE, newvalp, 0))
764 ret = do_sysctl(namep, a32.nlen, oldvalp, &oldlen, newvalp, (size_t) a32.newlen);
768 if (oldvalp && put_user (oldlen, (int __user *)compat_ptr(a32.oldlenp)))
775 /* warning: next two assume little endian */
777 sys32_pread(unsigned int fd, char __user *ubuf, u32 count, u32 poslo, u32 poshi)
779 return sys_pread64(fd, ubuf, count,
780 ((loff_t)AA(poshi) << 32) | AA(poslo));
784 sys32_pwrite(unsigned int fd, char __user *ubuf, u32 count, u32 poslo, u32 poshi)
786 return sys_pwrite64(fd, ubuf, count,
787 ((loff_t)AA(poshi) << 32) | AA(poslo));
792 sys32_personality(unsigned long personality)
795 if (personality(current->personality) == PER_LINUX32 &&
796 personality == PER_LINUX)
797 personality = PER_LINUX32;
798 ret = sys_personality(personality);
799 if (ret == PER_LINUX32)
805 sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count)
807 mm_segment_t old_fs = get_fs();
811 if (offset && get_user(of, offset))
815 ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count);
818 if (!ret && offset && put_user(of, offset))
824 /* Handle adjtimex compatibility. */
828 s32 offset, freq, maxerror, esterror;
829 s32 status, constant, precision, tolerance;
830 struct compat_timeval time;
832 s32 ppsfreq, jitter, shift, stabil;
833 s32 jitcnt, calcnt, errcnt, stbcnt;
834 s32 :32; s32 :32; s32 :32; s32 :32;
835 s32 :32; s32 :32; s32 :32; s32 :32;
836 s32 :32; s32 :32; s32 :32; s32 :32;
839 extern int do_adjtimex(struct timex *);
842 sys32_adjtimex(struct timex32 __user *utp)
847 memset(&txc, 0, sizeof(struct timex));
849 if(verify_area(VERIFY_READ, utp, sizeof(struct timex32)) ||
850 __get_user(txc.modes, &utp->modes) ||
851 __get_user(txc.offset, &utp->offset) ||
852 __get_user(txc.freq, &utp->freq) ||
853 __get_user(txc.maxerror, &utp->maxerror) ||
854 __get_user(txc.esterror, &utp->esterror) ||
855 __get_user(txc.status, &utp->status) ||
856 __get_user(txc.constant, &utp->constant) ||
857 __get_user(txc.precision, &utp->precision) ||
858 __get_user(txc.tolerance, &utp->tolerance) ||
859 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
860 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
861 __get_user(txc.tick, &utp->tick) ||
862 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
863 __get_user(txc.jitter, &utp->jitter) ||
864 __get_user(txc.shift, &utp->shift) ||
865 __get_user(txc.stabil, &utp->stabil) ||
866 __get_user(txc.jitcnt, &utp->jitcnt) ||
867 __get_user(txc.calcnt, &utp->calcnt) ||
868 __get_user(txc.errcnt, &utp->errcnt) ||
869 __get_user(txc.stbcnt, &utp->stbcnt))
872 ret = do_adjtimex(&txc);
874 if(verify_area(VERIFY_WRITE, utp, sizeof(struct timex32)) ||
875 __put_user(txc.modes, &utp->modes) ||
876 __put_user(txc.offset, &utp->offset) ||
877 __put_user(txc.freq, &utp->freq) ||
878 __put_user(txc.maxerror, &utp->maxerror) ||
879 __put_user(txc.esterror, &utp->esterror) ||
880 __put_user(txc.status, &utp->status) ||
881 __put_user(txc.constant, &utp->constant) ||
882 __put_user(txc.precision, &utp->precision) ||
883 __put_user(txc.tolerance, &utp->tolerance) ||
884 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
885 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
886 __put_user(txc.tick, &utp->tick) ||
887 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
888 __put_user(txc.jitter, &utp->jitter) ||
889 __put_user(txc.shift, &utp->shift) ||
890 __put_user(txc.stabil, &utp->stabil) ||
891 __put_user(txc.jitcnt, &utp->jitcnt) ||
892 __put_user(txc.calcnt, &utp->calcnt) ||
893 __put_user(txc.errcnt, &utp->errcnt) ||
894 __put_user(txc.stbcnt, &utp->stbcnt))
900 asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len,
901 unsigned long prot, unsigned long flags,
902 unsigned long fd, unsigned long pgoff)
904 struct mm_struct *mm = current->mm;
906 struct file * file = NULL;
908 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
909 if (!(flags & MAP_ANONYMOUS)) {
915 down_write(&mm->mmap_sem);
916 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
917 up_write(&mm->mmap_sem);
924 asmlinkage long sys32_olduname(struct oldold_utsname __user * name)
930 if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
935 error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
936 __put_user(0,name->sysname+__OLD_UTS_LEN);
937 __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
938 __put_user(0,name->nodename+__OLD_UTS_LEN);
939 __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
940 __put_user(0,name->release+__OLD_UTS_LEN);
941 __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
942 __put_user(0,name->version+__OLD_UTS_LEN);
944 char *arch = "x86_64";
945 if (personality(current->personality) == PER_LINUX32)
948 __copy_to_user(&name->machine,arch,strlen(arch)+1);
953 error = error ? -EFAULT : 0;
958 long sys32_uname(struct old_utsname __user * name)
964 err=copy_to_user(name, &system_utsname, sizeof (*name));
966 if (personality(current->personality) == PER_LINUX32)
967 err |= copy_to_user(&name->machine, "i686", 5);
968 return err?-EFAULT:0;
971 long sys32_ustat(unsigned dev, struct ustat32 __user *u32p)
979 ret = sys_ustat(dev,&u);
982 if (!access_ok(VERIFY_WRITE,u32p,sizeof(struct ustat32)) ||
983 __put_user((__u32) u.f_tfree, &u32p->f_tfree) ||
984 __put_user((__u32) u.f_tinode, &u32p->f_tfree) ||
985 __copy_to_user(&u32p->f_fname, u.f_fname, sizeof(u.f_fname)) ||
986 __copy_to_user(&u32p->f_fpack, u.f_fpack, sizeof(u.f_fpack)))
992 asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv,
993 compat_uptr_t __user *envp, struct pt_regs *regs)
998 filename = getname(name);
999 error = PTR_ERR(filename);
1000 if (IS_ERR(filename))
1002 error = compat_do_execve(filename, argv, envp, regs);
1005 current->ptrace &= ~PT_DTRACE;
1006 task_unlock(current);
1012 asmlinkage long sys32_clone(unsigned int clone_flags, unsigned int newsp,
1013 struct pt_regs *regs)
1015 void __user *parent_tid = (void __user *)regs->rdx;
1016 void __user *child_tid = (void __user *)regs->rdi;
1019 return do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid);
1022 asmlinkage long sys32_waitid(int which, compat_pid_t pid,
1023 siginfo_t32 __user *uinfo, int options,
1024 struct compat_rusage __user *uru)
1029 mm_segment_t old_fs = get_fs();
1033 ret = sys_waitid(which, pid, (siginfo_t __user *) &info, options,
1037 if (ret < 0 || info.si_signo == 0)
1040 if (uru && (ret = put_compat_rusage(&ru, uru)))
1043 BUG_ON(info.si_code & __SI_MASK);
1044 info.si_code |= __SI_CHLD;
1045 return ia32_copy_siginfo_to_user(uinfo, &info);
1049 * Some system calls that need sign extended arguments. This could be done by a generic wrapper.
1052 long sys32_lseek (unsigned int fd, int offset, unsigned int whence)
1054 return sys_lseek(fd, offset, whence);
1057 long sys32_kill(int pid, int sig)
1059 return sys_kill(pid, sig);
1062 asmlinkage long sys32_open(const char __user * filename, int flags, int mode)
1067 /* don't force O_LARGEFILE */
1068 tmp = getname(filename);
1071 fd = get_unused_fd();
1073 struct file *f = filp_open(tmp, flags, mode);
1090 u32 payload[(64 / 4) - 3];
1093 extern asmlinkage long
1094 sys_timer_create(clockid_t which_clock,
1095 struct sigevent __user *timer_event_spec,
1096 timer_t __user * created_timer_id);
1099 sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id)
1101 struct sigevent __user *p = NULL;
1104 p = compat_alloc_user_space(sizeof(struct sigevent));
1105 memset(&se, 0, sizeof(struct sigevent));
1106 if (get_user(se.sigev_value.sival_int, &se32->sigev_value) ||
1107 __get_user(se.sigev_signo, &se32->sigev_signo) ||
1108 __get_user(se.sigev_notify, &se32->sigev_notify) ||
1109 __copy_from_user(&se._sigev_un._pad, &se32->payload,
1110 sizeof(se32->payload)) ||
1111 copy_to_user(p, &se, sizeof(se)))
1114 return sys_timer_create(clock, p, timer_id);
1117 long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high,
1118 __u32 len_low, __u32 len_high, int advice)
1120 return sys_fadvise64_64(fd,
1121 (((u64)offset_high)<<32) | offset_low,
1122 (((u64)len_high)<<32) | len_low,
1126 long sys32_vm86_warning(void)
1128 struct task_struct *me = current;
1129 static char lastcomm[sizeof(me->comm)];
1130 if (strncmp(lastcomm, me->comm, sizeof(lastcomm))) {
1131 printk(KERN_INFO "%s: vm86 mode not supported on 64 bit kernel\n",
1133 strncpy(lastcomm, me->comm, sizeof(lastcomm));
1138 long sys32_lookup_dcookie(u32 addr_low, u32 addr_high,
1139 char __user * buf, size_t len)
1141 return sys_lookup_dcookie(((u64)addr_high << 32) | addr_low, buf, len);
1144 cond_syscall(sys32_ipc)
1146 static int __init ia32_init (void)
1148 printk("IA32 emulation $Id: sys_ia32.c,v 1.32 2002/03/24 13:02:28 ak Exp $\n");
1152 __initcall(ia32_init);
1154 extern unsigned long ia32_sys_call_table[];
1155 EXPORT_SYMBOL(ia32_sys_call_table);