2 * sys_ppc32.c: Conversion between 32bit and 64bit native syscalls.
4 * Copyright (C) 2001 IBM
5 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
8 * These routines maintain argument size conversion between 32bit and 64bit
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
17 #include <linux/kernel.h>
18 #include <linux/sched.h>
21 #include <linux/file.h>
22 #include <linux/signal.h>
23 #include <linux/resource.h>
24 #include <linux/times.h>
25 #include <linux/utsname.h>
26 #include <linux/smp.h>
27 #include <linux/smp_lock.h>
28 #include <linux/sem.h>
29 #include <linux/msg.h>
30 #include <linux/shm.h>
31 #include <linux/poll.h>
32 #include <linux/personality.h>
33 #include <linux/stat.h>
34 #include <linux/mman.h>
36 #include <linux/syscalls.h>
37 #include <linux/unistd.h>
38 #include <linux/sysctl.h>
39 #include <linux/binfmts.h>
40 #include <linux/security.h>
41 #include <linux/compat.h>
42 #include <linux/ptrace.h>
43 #include <linux/elf.h>
45 #include <asm/ptrace.h>
46 #include <asm/types.h>
48 #include <asm/uaccess.h>
49 #include <asm/unistd.h>
50 #include <asm/semaphore.h>
52 #include <asm/mmu_context.h>
53 #include <asm/ppc-pci.h>
54 #include <asm/syscalls.h>
56 /* readdir & getdents */
57 #define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
58 #define ROUND_UP(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
60 struct old_linux_dirent32 {
63 unsigned short d_namlen;
67 struct readdir_callback32 {
68 struct old_linux_dirent32 __user * dirent;
72 static int fillonedir(void * __buf, const char * name, int namlen,
73 off_t offset, u64 ino, unsigned int d_type)
75 struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf;
76 struct old_linux_dirent32 __user * dirent;
82 if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
86 put_user(d_ino, &dirent->d_ino);
87 put_user(offset, &dirent->d_offset);
88 put_user(namlen, &dirent->d_namlen);
89 copy_to_user(dirent->d_name, name, namlen);
90 put_user(0, dirent->d_name + namlen);
94 asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count)
98 struct readdir_callback32 buf;
107 error = vfs_readdir(file, (filldir_t)fillonedir, &buf);
118 asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
119 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
123 return compat_sys_select((int)n, inp, outp, exp, compat_ptr(tvp_x));
126 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
131 if (stat->size > MAX_NON_LFS || !new_valid_dev(stat->dev) ||
132 !new_valid_dev(stat->rdev))
136 if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino)
139 err = access_ok(VERIFY_WRITE, statbuf, sizeof(*statbuf)) ? 0 : -EFAULT;
140 err |= __put_user(new_encode_dev(stat->dev), &statbuf->st_dev);
141 err |= __put_user(ino, &statbuf->st_ino);
142 err |= __put_user(stat->mode, &statbuf->st_mode);
143 err |= __put_user(stat->nlink, &statbuf->st_nlink);
144 err |= __put_user(stat->uid, &statbuf->st_uid);
145 err |= __put_user(stat->gid, &statbuf->st_gid);
146 err |= __put_user(new_encode_dev(stat->rdev), &statbuf->st_rdev);
147 err |= __put_user(stat->size, &statbuf->st_size);
148 err |= __put_user(stat->atime.tv_sec, &statbuf->st_atime);
149 err |= __put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
150 err |= __put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
151 err |= __put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
152 err |= __put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
153 err |= __put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
154 err |= __put_user(stat->blksize, &statbuf->st_blksize);
155 err |= __put_user(stat->blocks, &statbuf->st_blocks);
156 err |= __put_user(0, &statbuf->__unused4[0]);
157 err |= __put_user(0, &statbuf->__unused4[1]);
162 /* Note: it is necessary to treat option as an unsigned int,
163 * with the corresponding cast to a signed int to insure that the
164 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
165 * and the register representation of a signed int (msr in 64-bit mode) is performed.
167 asmlinkage long compat_sys_sysfs(u32 option, u32 arg1, u32 arg2)
169 return sys_sysfs((int)option, arg1, arg2);
172 asmlinkage long compat_sys_pause(void)
174 current->state = TASK_INTERRUPTIBLE;
177 return -ERESTARTNOHAND;
180 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
184 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
186 if (__get_user(o->tv_sec, &i->tv_sec))
188 if (__get_user(usec, &i->tv_usec))
190 o->tv_nsec = usec * 1000;
194 static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
196 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
197 (__put_user(i->tv_sec, &o->tv_sec) |
198 __put_user(i->tv_usec, &o->tv_usec)));
204 /* Translations due to time_t size differences. Which affects all
205 sorts of things, like timeval and itimerval. */
206 extern struct timezone sys_tz;
208 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
212 do_gettimeofday(&ktv);
213 if (put_tv32(tv, &ktv))
217 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
226 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
232 if (get_ts32(&kts, tv))
236 if (copy_from_user(&ktz, tz, sizeof(ktz)))
240 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
243 #ifdef CONFIG_SYSVIPC
244 long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr,
249 version = call >> 16; /* hack for backward compatibility */
256 /* sign extend semid */
257 return compat_sys_semtimedop((int)first,
258 compat_ptr(ptr), second,
260 /* else fall through for normal semop() */
262 /* struct sembuf is the same on 32 and 64bit :)) */
263 /* sign extend semid */
264 return sys_semtimedop((int)first, compat_ptr(ptr), second,
267 /* sign extend key, nsems */
268 return sys_semget((int)first, (int)second, third);
270 /* sign extend semid, semnum */
271 return compat_sys_semctl((int)first, (int)second, third,
275 /* sign extend msqid */
276 return compat_sys_msgsnd((int)first, (int)second, third,
279 /* sign extend msqid, msgtyp */
280 return compat_sys_msgrcv((int)first, second, (int)fifth,
281 third, version, compat_ptr(ptr));
283 /* sign extend key */
284 return sys_msgget((int)first, second);
286 /* sign extend msqid */
287 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
290 /* sign extend shmid */
291 return compat_sys_shmat((int)first, second, third, version,
294 return sys_shmdt(compat_ptr(ptr));
296 /* sign extend key_t */
297 return sys_shmget((int)first, second, third);
299 /* sign extend shmid */
300 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
310 /* Note: it is necessary to treat out_fd and in_fd as unsigned ints,
311 * with the corresponding cast to a signed int to insure that the
312 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
313 * and the register representation of a signed int (msr in 64-bit mode) is performed.
315 asmlinkage long compat_sys_sendfile(u32 out_fd, u32 in_fd, compat_off_t __user * offset, u32 count)
317 mm_segment_t old_fs = get_fs();
322 if (offset && get_user(of, offset))
325 /* The __user pointer cast is valid because of the set_fs() */
327 up = offset ? (off_t __user *) &of : NULL;
328 ret = sys_sendfile((int)out_fd, (int)in_fd, up, count);
331 if (offset && put_user(of, offset))
337 asmlinkage int compat_sys_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
339 mm_segment_t old_fs = get_fs();
344 if (offset && get_user(lof, offset))
347 /* The __user pointer cast is valid because of the set_fs() */
349 up = offset ? (loff_t __user *) &lof : NULL;
350 ret = sys_sendfile64(out_fd, in_fd, up, count);
353 if (offset && put_user(lof, offset))
359 long compat_sys_execve(unsigned long a0, unsigned long a1, unsigned long a2,
360 unsigned long a3, unsigned long a4, unsigned long a5,
361 struct pt_regs *regs)
366 filename = getname((char __user *) a0);
367 error = PTR_ERR(filename);
368 if (IS_ERR(filename))
370 flush_fp_to_thread(current);
371 flush_altivec_to_thread(current);
373 error = compat_do_execve(filename, compat_ptr(a1), compat_ptr(a2), regs);
377 current->ptrace &= ~PT_DTRACE;
378 task_unlock(current);
386 /* Note: it is necessary to treat option as an unsigned int,
387 * with the corresponding cast to a signed int to insure that the
388 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
389 * and the register representation of a signed int (msr in 64-bit mode) is performed.
391 asmlinkage long compat_sys_prctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
393 return sys_prctl((int)option,
394 (unsigned long) arg2,
395 (unsigned long) arg3,
396 (unsigned long) arg4,
397 (unsigned long) arg5);
400 /* Note: it is necessary to treat pid as an unsigned int,
401 * with the corresponding cast to a signed int to insure that the
402 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
403 * and the register representation of a signed int (msr in 64-bit mode) is performed.
405 asmlinkage long compat_sys_sched_rr_get_interval(u32 pid, struct compat_timespec __user *interval)
409 mm_segment_t old_fs = get_fs ();
411 /* The __user pointer cast is valid because of the set_fs() */
413 ret = sys_sched_rr_get_interval((int)pid, (struct timespec __user *) &t);
415 if (put_compat_timespec(&t, interval))
420 /* Note: it is necessary to treat mode as an unsigned int,
421 * with the corresponding cast to a signed int to insure that the
422 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
423 * and the register representation of a signed int (msr in 64-bit mode) is performed.
425 asmlinkage long compat_sys_access(const char __user * filename, u32 mode)
427 return sys_access(filename, (int)mode);
431 /* Note: it is necessary to treat mode as an unsigned int,
432 * with the corresponding cast to a signed int to insure that the
433 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
434 * and the register representation of a signed int (msr in 64-bit mode) is performed.
436 asmlinkage long compat_sys_creat(const char __user * pathname, u32 mode)
438 return sys_creat(pathname, (int)mode);
442 /* Note: it is necessary to treat pid and options as unsigned ints,
443 * with the corresponding cast to a signed int to insure that the
444 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
445 * and the register representation of a signed int (msr in 64-bit mode) is performed.
447 asmlinkage long compat_sys_waitpid(u32 pid, unsigned int __user * stat_addr, u32 options)
449 return sys_waitpid((int)pid, stat_addr, (int)options);
453 /* Note: it is necessary to treat gidsetsize as an unsigned int,
454 * with the corresponding cast to a signed int to insure that the
455 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
456 * and the register representation of a signed int (msr in 64-bit mode) is performed.
458 asmlinkage long compat_sys_getgroups(u32 gidsetsize, gid_t __user *grouplist)
460 return sys_getgroups((int)gidsetsize, grouplist);
464 /* Note: it is necessary to treat pid as an unsigned int,
465 * with the corresponding cast to a signed int to insure that the
466 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
467 * and the register representation of a signed int (msr in 64-bit mode) is performed.
469 asmlinkage long compat_sys_getpgid(u32 pid)
471 return sys_getpgid((int)pid);
476 /* Note: it is necessary to treat pid as an unsigned int,
477 * with the corresponding cast to a signed int to insure that the
478 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
479 * and the register representation of a signed int (msr in 64-bit mode) is performed.
481 asmlinkage long compat_sys_getsid(u32 pid)
483 return sys_getsid((int)pid);
487 /* Note: it is necessary to treat pid and sig as unsigned ints,
488 * with the corresponding cast to a signed int to insure that the
489 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
490 * and the register representation of a signed int (msr in 64-bit mode) is performed.
492 asmlinkage long compat_sys_kill(u32 pid, u32 sig)
494 return sys_kill((int)pid, (int)sig);
498 /* Note: it is necessary to treat mode as an unsigned int,
499 * with the corresponding cast to a signed int to insure that the
500 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
501 * and the register representation of a signed int (msr in 64-bit mode) is performed.
503 asmlinkage long compat_sys_mkdir(const char __user * pathname, u32 mode)
505 return sys_mkdir(pathname, (int)mode);
508 long compat_sys_nice(u32 increment)
510 /* sign extend increment */
511 return sys_nice((int)increment);
514 off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin)
517 return sys_lseek(fd, (int)offset, origin);
520 /* Note: it is necessary to treat bufsiz as an unsigned int,
521 * with the corresponding cast to a signed int to insure that the
522 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
523 * and the register representation of a signed int (msr in 64-bit mode) is performed.
525 asmlinkage long compat_sys_readlink(const char __user * path, char __user * buf, u32 bufsiz)
527 return sys_readlink(path, buf, (int)bufsiz);
530 /* Note: it is necessary to treat option as an unsigned int,
531 * with the corresponding cast to a signed int to insure that the
532 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
533 * and the register representation of a signed int (msr in 64-bit mode) is performed.
535 asmlinkage long compat_sys_sched_get_priority_max(u32 policy)
537 return sys_sched_get_priority_max((int)policy);
541 /* Note: it is necessary to treat policy as an unsigned int,
542 * with the corresponding cast to a signed int to insure that the
543 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
544 * and the register representation of a signed int (msr in 64-bit mode) is performed.
546 asmlinkage long compat_sys_sched_get_priority_min(u32 policy)
548 return sys_sched_get_priority_min((int)policy);
552 /* Note: it is necessary to treat pid as an unsigned int,
553 * with the corresponding cast to a signed int to insure that the
554 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
555 * and the register representation of a signed int (msr in 64-bit mode) is performed.
557 asmlinkage long compat_sys_sched_getparam(u32 pid, struct sched_param __user *param)
559 return sys_sched_getparam((int)pid, param);
563 /* Note: it is necessary to treat pid as an unsigned int,
564 * with the corresponding cast to a signed int to insure that the
565 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
566 * and the register representation of a signed int (msr in 64-bit mode) is performed.
568 asmlinkage long compat_sys_sched_getscheduler(u32 pid)
570 return sys_sched_getscheduler((int)pid);
574 /* Note: it is necessary to treat pid as an unsigned int,
575 * with the corresponding cast to a signed int to insure that the
576 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
577 * and the register representation of a signed int (msr in 64-bit mode) is performed.
579 asmlinkage long compat_sys_sched_setparam(u32 pid, struct sched_param __user *param)
581 return sys_sched_setparam((int)pid, param);
585 /* Note: it is necessary to treat pid and policy as unsigned ints,
586 * with the corresponding cast to a signed int to insure that the
587 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
588 * and the register representation of a signed int (msr in 64-bit mode) is performed.
590 asmlinkage long compat_sys_sched_setscheduler(u32 pid, u32 policy, struct sched_param __user *param)
592 return sys_sched_setscheduler((int)pid, (int)policy, param);
596 /* Note: it is necessary to treat len as an unsigned int,
597 * with the corresponding cast to a signed int to insure that the
598 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
599 * and the register representation of a signed int (msr in 64-bit mode) is performed.
601 asmlinkage long compat_sys_setdomainname(char __user *name, u32 len)
603 return sys_setdomainname(name, (int)len);
607 /* Note: it is necessary to treat gidsetsize as an unsigned int,
608 * with the corresponding cast to a signed int to insure that the
609 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
610 * and the register representation of a signed int (msr in 64-bit mode) is performed.
612 asmlinkage long compat_sys_setgroups(u32 gidsetsize, gid_t __user *grouplist)
614 return sys_setgroups((int)gidsetsize, grouplist);
618 asmlinkage long compat_sys_sethostname(char __user *name, u32 len)
620 /* sign extend len */
621 return sys_sethostname(name, (int)len);
625 /* Note: it is necessary to treat pid and pgid as unsigned ints,
626 * with the corresponding cast to a signed int to insure that the
627 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
628 * and the register representation of a signed int (msr in 64-bit mode) is performed.
630 asmlinkage long compat_sys_setpgid(u32 pid, u32 pgid)
632 return sys_setpgid((int)pid, (int)pgid);
635 long compat_sys_getpriority(u32 which, u32 who)
637 /* sign extend which and who */
638 return sys_getpriority((int)which, (int)who);
641 long compat_sys_setpriority(u32 which, u32 who, u32 niceval)
643 /* sign extend which, who and niceval */
644 return sys_setpriority((int)which, (int)who, (int)niceval);
647 long compat_sys_ioprio_get(u32 which, u32 who)
649 /* sign extend which and who */
650 return sys_ioprio_get((int)which, (int)who);
653 long compat_sys_ioprio_set(u32 which, u32 who, u32 ioprio)
655 /* sign extend which, who and ioprio */
656 return sys_ioprio_set((int)which, (int)who, (int)ioprio);
659 /* Note: it is necessary to treat newmask as an unsigned int,
660 * with the corresponding cast to a signed int to insure that the
661 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
662 * and the register representation of a signed int (msr in 64-bit mode) is performed.
664 asmlinkage long compat_sys_ssetmask(u32 newmask)
666 return sys_ssetmask((int) newmask);
669 asmlinkage long compat_sys_syslog(u32 type, char __user * buf, u32 len)
671 /* sign extend len */
672 return sys_syslog(type, buf, (int)len);
676 /* Note: it is necessary to treat mask as an unsigned int,
677 * with the corresponding cast to a signed int to insure that the
678 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
679 * and the register representation of a signed int (msr in 64-bit mode) is performed.
681 asmlinkage long compat_sys_umask(u32 mask)
683 return sys_umask((int)mask);
686 #ifdef CONFIG_SYSCTL_SYSCALL
687 struct __sysctl_args32 {
697 asmlinkage long compat_sys_sysctl(struct __sysctl_args32 __user *args)
699 struct __sysctl_args32 tmp;
702 size_t __user *oldlenp = NULL;
703 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
705 if (copy_from_user(&tmp, args, sizeof(tmp)))
708 if (tmp.oldval && tmp.oldlenp) {
709 /* Duh, this is ugly and might not work if sysctl_args
710 is in read-only memory, but do_sysctl does indirectly
711 a lot of uaccess in both directions and we'd have to
712 basically copy the whole sysctl.c here, and
713 glibc's __sysctl uses rw memory for the structure
715 oldlenp = (size_t __user *)addr;
716 if (get_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)) ||
717 put_user(oldlen, oldlenp))
722 error = do_sysctl(compat_ptr(tmp.name), tmp.nlen,
723 compat_ptr(tmp.oldval), oldlenp,
724 compat_ptr(tmp.newval), tmp.newlen);
728 if (get_user(oldlen, oldlenp) ||
729 put_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)))
732 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
738 unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
739 unsigned long prot, unsigned long flags,
740 unsigned long fd, unsigned long pgoff)
742 /* This should remain 12 even if PAGE_SIZE changes */
743 return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
746 long compat_sys_tgkill(u32 tgid, u32 pid, int sig)
748 /* sign extend tgid, pid */
749 return sys_tgkill((int)tgid, (int)pid, sig);
754 * The 32 bit ABI passes long longs in an odd even register pair.
757 compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
758 u32 reg6, u32 poshi, u32 poslo)
760 return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
763 compat_ssize_t compat_sys_pwrite64(unsigned int fd, char __user *ubuf, compat_size_t count,
764 u32 reg6, u32 poshi, u32 poslo)
766 return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
769 compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
771 return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
774 asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,
775 unsigned long high, unsigned long low)
777 return sys_truncate(path, (high << 32) | low);
780 asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
783 return sys_ftruncate(fd, (high << 32) | low);
786 long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
789 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
793 long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
794 size_t len, int advice)
796 return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len,
800 asmlinkage long compat_sys_add_key(const char __user *_type,
801 const char __user *_description,
802 const void __user *_payload,
806 return sys_add_key(_type, _description, _payload, plen, ringid);
809 asmlinkage long compat_sys_request_key(const char __user *_type,
810 const char __user *_description,
811 const char __user *_callout_info,
814 return sys_request_key(_type, _description, _callout_info, destringid);