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)));
210 unsigned short procs;
215 char _f[20-2*sizeof(int)-sizeof(int)];
218 asmlinkage long compat_sys_sysinfo(struct sysinfo32 __user *info)
223 mm_segment_t old_fs = get_fs ();
225 /* The __user cast is valid due to set_fs() */
227 ret = sys_sysinfo((struct sysinfo __user *)&s);
230 /* Check to see if any memory value is too large for 32-bit and
231 * scale down if needed.
233 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
234 while (s.mem_unit < PAGE_SIZE) {
238 s.totalram >>=bitcount;
239 s.freeram >>= bitcount;
240 s.sharedram >>= bitcount;
241 s.bufferram >>= bitcount;
242 s.totalswap >>= bitcount;
243 s.freeswap >>= bitcount;
244 s.totalhigh >>= bitcount;
245 s.freehigh >>= bitcount;
248 err = put_user (s.uptime, &info->uptime);
249 err |= __put_user (s.loads[0], &info->loads[0]);
250 err |= __put_user (s.loads[1], &info->loads[1]);
251 err |= __put_user (s.loads[2], &info->loads[2]);
252 err |= __put_user (s.totalram, &info->totalram);
253 err |= __put_user (s.freeram, &info->freeram);
254 err |= __put_user (s.sharedram, &info->sharedram);
255 err |= __put_user (s.bufferram, &info->bufferram);
256 err |= __put_user (s.totalswap, &info->totalswap);
257 err |= __put_user (s.freeswap, &info->freeswap);
258 err |= __put_user (s.procs, &info->procs);
259 err |= __put_user (s.totalhigh, &info->totalhigh);
260 err |= __put_user (s.freehigh, &info->freehigh);
261 err |= __put_user (s.mem_unit, &info->mem_unit);
271 /* Translations due to time_t size differences. Which affects all
272 sorts of things, like timeval and itimerval. */
273 extern struct timezone sys_tz;
275 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
279 vx_gettimeofday(&ktv);
280 if (put_tv32(tv, &ktv))
284 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
293 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
299 if (get_ts32(&kts, tv))
303 if (copy_from_user(&ktz, tz, sizeof(ktz)))
307 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
310 #ifdef CONFIG_SYSVIPC
311 long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr,
316 version = call >> 16; /* hack for backward compatibility */
323 /* sign extend semid */
324 return compat_sys_semtimedop((int)first,
325 compat_ptr(ptr), second,
327 /* else fall through for normal semop() */
329 /* struct sembuf is the same on 32 and 64bit :)) */
330 /* sign extend semid */
331 return sys_semtimedop((int)first, compat_ptr(ptr), second,
334 /* sign extend key, nsems */
335 return sys_semget((int)first, (int)second, third);
337 /* sign extend semid, semnum */
338 return compat_sys_semctl((int)first, (int)second, third,
342 /* sign extend msqid */
343 return compat_sys_msgsnd((int)first, (int)second, third,
346 /* sign extend msqid, msgtyp */
347 return compat_sys_msgrcv((int)first, second, (int)fifth,
348 third, version, compat_ptr(ptr));
350 /* sign extend key */
351 return sys_msgget((int)first, second);
353 /* sign extend msqid */
354 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
357 /* sign extend shmid */
358 return compat_sys_shmat((int)first, second, third, version,
361 return sys_shmdt(compat_ptr(ptr));
363 /* sign extend key_t */
364 return sys_shmget((int)first, second, third);
366 /* sign extend shmid */
367 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
377 /* Note: it is necessary to treat out_fd and in_fd as unsigned ints,
378 * with the corresponding cast to a signed int to insure that the
379 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
380 * and the register representation of a signed int (msr in 64-bit mode) is performed.
382 asmlinkage long compat_sys_sendfile(u32 out_fd, u32 in_fd, compat_off_t __user * offset, u32 count)
384 mm_segment_t old_fs = get_fs();
389 if (offset && get_user(of, offset))
392 /* The __user pointer cast is valid because of the set_fs() */
394 up = offset ? (off_t __user *) &of : NULL;
395 ret = sys_sendfile((int)out_fd, (int)in_fd, up, count);
398 if (offset && put_user(of, offset))
404 asmlinkage int compat_sys_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
406 mm_segment_t old_fs = get_fs();
411 if (offset && get_user(lof, offset))
414 /* The __user pointer cast is valid because of the set_fs() */
416 up = offset ? (loff_t __user *) &lof : NULL;
417 ret = sys_sendfile64(out_fd, in_fd, up, count);
420 if (offset && put_user(lof, offset))
426 long compat_sys_execve(unsigned long a0, unsigned long a1, unsigned long a2,
427 unsigned long a3, unsigned long a4, unsigned long a5,
428 struct pt_regs *regs)
433 filename = getname((char __user *) a0);
434 error = PTR_ERR(filename);
435 if (IS_ERR(filename))
437 flush_fp_to_thread(current);
438 flush_altivec_to_thread(current);
440 error = compat_do_execve(filename, compat_ptr(a1), compat_ptr(a2), regs);
448 /* Note: it is necessary to treat option as an unsigned int,
449 * with the corresponding cast to a signed int to insure that the
450 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
451 * and the register representation of a signed int (msr in 64-bit mode) is performed.
453 asmlinkage long compat_sys_prctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
455 return sys_prctl((int)option,
456 (unsigned long) arg2,
457 (unsigned long) arg3,
458 (unsigned long) arg4,
459 (unsigned long) arg5);
462 /* Note: it is necessary to treat pid as an unsigned int,
463 * with the corresponding cast to a signed int to insure that the
464 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
465 * and the register representation of a signed int (msr in 64-bit mode) is performed.
467 asmlinkage long compat_sys_sched_rr_get_interval(u32 pid, struct compat_timespec __user *interval)
471 mm_segment_t old_fs = get_fs ();
473 /* The __user pointer cast is valid because of the set_fs() */
475 ret = sys_sched_rr_get_interval((int)pid, (struct timespec __user *) &t);
477 if (put_compat_timespec(&t, interval))
482 /* Note: it is necessary to treat mode as an unsigned int,
483 * with the corresponding cast to a signed int to insure that the
484 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
485 * and the register representation of a signed int (msr in 64-bit mode) is performed.
487 asmlinkage long compat_sys_access(const char __user * filename, u32 mode)
489 return sys_access(filename, (int)mode);
493 /* Note: it is necessary to treat mode as an unsigned int,
494 * with the corresponding cast to a signed int to insure that the
495 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
496 * and the register representation of a signed int (msr in 64-bit mode) is performed.
498 asmlinkage long compat_sys_creat(const char __user * pathname, u32 mode)
500 return sys_creat(pathname, (int)mode);
504 /* Note: it is necessary to treat pid and options as unsigned ints,
505 * with the corresponding cast to a signed int to insure that the
506 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
507 * and the register representation of a signed int (msr in 64-bit mode) is performed.
509 asmlinkage long compat_sys_waitpid(u32 pid, unsigned int __user * stat_addr, u32 options)
511 return sys_waitpid((int)pid, stat_addr, (int)options);
515 /* Note: it is necessary to treat gidsetsize as an unsigned int,
516 * with the corresponding cast to a signed int to insure that the
517 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
518 * and the register representation of a signed int (msr in 64-bit mode) is performed.
520 asmlinkage long compat_sys_getgroups(u32 gidsetsize, gid_t __user *grouplist)
522 return sys_getgroups((int)gidsetsize, grouplist);
526 /* Note: it is necessary to treat pid as an unsigned int,
527 * with the corresponding cast to a signed int to insure that the
528 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
529 * and the register representation of a signed int (msr in 64-bit mode) is performed.
531 asmlinkage long compat_sys_getpgid(u32 pid)
533 return sys_getpgid((int)pid);
538 /* Note: it is necessary to treat pid as an unsigned int,
539 * with the corresponding cast to a signed int to insure that the
540 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
541 * and the register representation of a signed int (msr in 64-bit mode) is performed.
543 asmlinkage long compat_sys_getsid(u32 pid)
545 return sys_getsid((int)pid);
549 /* Note: it is necessary to treat pid and sig as unsigned ints,
550 * with the corresponding cast to a signed int to insure that the
551 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
552 * and the register representation of a signed int (msr in 64-bit mode) is performed.
554 asmlinkage long compat_sys_kill(u32 pid, u32 sig)
556 return sys_kill((int)pid, (int)sig);
560 /* Note: it is necessary to treat mode as an unsigned int,
561 * with the corresponding cast to a signed int to insure that the
562 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
563 * and the register representation of a signed int (msr in 64-bit mode) is performed.
565 asmlinkage long compat_sys_mkdir(const char __user * pathname, u32 mode)
567 return sys_mkdir(pathname, (int)mode);
570 long compat_sys_nice(u32 increment)
572 /* sign extend increment */
573 return sys_nice((int)increment);
576 off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin)
579 return sys_lseek(fd, (int)offset, origin);
582 /* Note: it is necessary to treat bufsiz as an unsigned int,
583 * with the corresponding cast to a signed int to insure that the
584 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
585 * and the register representation of a signed int (msr in 64-bit mode) is performed.
587 asmlinkage long compat_sys_readlink(const char __user * path, char __user * buf, u32 bufsiz)
589 return sys_readlink(path, buf, (int)bufsiz);
592 /* Note: it is necessary to treat option as an unsigned int,
593 * with the corresponding cast to a signed int to insure that the
594 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
595 * and the register representation of a signed int (msr in 64-bit mode) is performed.
597 asmlinkage long compat_sys_sched_get_priority_max(u32 policy)
599 return sys_sched_get_priority_max((int)policy);
603 /* Note: it is necessary to treat policy as an unsigned int,
604 * with the corresponding cast to a signed int to insure that the
605 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
606 * and the register representation of a signed int (msr in 64-bit mode) is performed.
608 asmlinkage long compat_sys_sched_get_priority_min(u32 policy)
610 return sys_sched_get_priority_min((int)policy);
614 /* Note: it is necessary to treat pid as an unsigned int,
615 * with the corresponding cast to a signed int to insure that the
616 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
617 * and the register representation of a signed int (msr in 64-bit mode) is performed.
619 asmlinkage long compat_sys_sched_getparam(u32 pid, struct sched_param __user *param)
621 return sys_sched_getparam((int)pid, param);
625 /* Note: it is necessary to treat pid as an unsigned int,
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_sched_getscheduler(u32 pid)
632 return sys_sched_getscheduler((int)pid);
636 /* Note: it is necessary to treat pid as an unsigned int,
637 * with the corresponding cast to a signed int to insure that the
638 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
639 * and the register representation of a signed int (msr in 64-bit mode) is performed.
641 asmlinkage long compat_sys_sched_setparam(u32 pid, struct sched_param __user *param)
643 return sys_sched_setparam((int)pid, param);
647 /* Note: it is necessary to treat pid and policy as unsigned ints,
648 * with the corresponding cast to a signed int to insure that the
649 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
650 * and the register representation of a signed int (msr in 64-bit mode) is performed.
652 asmlinkage long compat_sys_sched_setscheduler(u32 pid, u32 policy, struct sched_param __user *param)
654 return sys_sched_setscheduler((int)pid, (int)policy, param);
658 /* Note: it is necessary to treat len as an unsigned int,
659 * with the corresponding cast to a signed int to insure that the
660 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
661 * and the register representation of a signed int (msr in 64-bit mode) is performed.
663 asmlinkage long compat_sys_setdomainname(char __user *name, u32 len)
665 return sys_setdomainname(name, (int)len);
669 /* Note: it is necessary to treat gidsetsize as an unsigned int,
670 * with the corresponding cast to a signed int to insure that the
671 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
672 * and the register representation of a signed int (msr in 64-bit mode) is performed.
674 asmlinkage long compat_sys_setgroups(u32 gidsetsize, gid_t __user *grouplist)
676 return sys_setgroups((int)gidsetsize, grouplist);
680 asmlinkage long compat_sys_sethostname(char __user *name, u32 len)
682 /* sign extend len */
683 return sys_sethostname(name, (int)len);
687 /* Note: it is necessary to treat pid and pgid as unsigned ints,
688 * with the corresponding cast to a signed int to insure that the
689 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
690 * and the register representation of a signed int (msr in 64-bit mode) is performed.
692 asmlinkage long compat_sys_setpgid(u32 pid, u32 pgid)
694 return sys_setpgid((int)pid, (int)pgid);
697 long compat_sys_getpriority(u32 which, u32 who)
699 /* sign extend which and who */
700 return sys_getpriority((int)which, (int)who);
703 long compat_sys_setpriority(u32 which, u32 who, u32 niceval)
705 /* sign extend which, who and niceval */
706 return sys_setpriority((int)which, (int)who, (int)niceval);
709 long compat_sys_ioprio_get(u32 which, u32 who)
711 /* sign extend which and who */
712 return sys_ioprio_get((int)which, (int)who);
715 long compat_sys_ioprio_set(u32 which, u32 who, u32 ioprio)
717 /* sign extend which, who and ioprio */
718 return sys_ioprio_set((int)which, (int)who, (int)ioprio);
721 /* Note: it is necessary to treat newmask as an unsigned int,
722 * with the corresponding cast to a signed int to insure that the
723 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
724 * and the register representation of a signed int (msr in 64-bit mode) is performed.
726 asmlinkage long compat_sys_ssetmask(u32 newmask)
728 return sys_ssetmask((int) newmask);
731 asmlinkage long compat_sys_syslog(u32 type, char __user * buf, u32 len)
733 /* sign extend len */
734 return sys_syslog(type, buf, (int)len);
738 /* Note: it is necessary to treat mask as an unsigned int,
739 * with the corresponding cast to a signed int to insure that the
740 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
741 * and the register representation of a signed int (msr in 64-bit mode) is performed.
743 asmlinkage long compat_sys_umask(u32 mask)
745 return sys_umask((int)mask);
748 #ifdef CONFIG_SYSCTL_SYSCALL
749 struct __sysctl_args32 {
759 asmlinkage long compat_sys_sysctl(struct __sysctl_args32 __user *args)
761 struct __sysctl_args32 tmp;
764 size_t __user *oldlenp = NULL;
765 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
767 if (copy_from_user(&tmp, args, sizeof(tmp)))
770 if (tmp.oldval && tmp.oldlenp) {
771 /* Duh, this is ugly and might not work if sysctl_args
772 is in read-only memory, but do_sysctl does indirectly
773 a lot of uaccess in both directions and we'd have to
774 basically copy the whole sysctl.c here, and
775 glibc's __sysctl uses rw memory for the structure
777 oldlenp = (size_t __user *)addr;
778 if (get_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)) ||
779 put_user(oldlen, oldlenp))
784 error = do_sysctl(compat_ptr(tmp.name), tmp.nlen,
785 compat_ptr(tmp.oldval), oldlenp,
786 compat_ptr(tmp.newval), tmp.newlen);
790 if (get_user(oldlen, oldlenp) ||
791 put_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)))
794 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
800 unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
801 unsigned long prot, unsigned long flags,
802 unsigned long fd, unsigned long pgoff)
804 /* This should remain 12 even if PAGE_SIZE changes */
805 return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
808 long compat_sys_tgkill(u32 tgid, u32 pid, int sig)
810 /* sign extend tgid, pid */
811 return sys_tgkill((int)tgid, (int)pid, sig);
816 * The 32 bit ABI passes long longs in an odd even register pair.
819 compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
820 u32 reg6, u32 poshi, u32 poslo)
822 return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
825 compat_ssize_t compat_sys_pwrite64(unsigned int fd, char __user *ubuf, compat_size_t count,
826 u32 reg6, u32 poshi, u32 poslo)
828 return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
831 compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
833 return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
836 asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,
837 unsigned long high, unsigned long low)
839 return sys_truncate(path, (high << 32) | low);
842 asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
845 return sys_ftruncate(fd, (high << 32) | low);
848 long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
851 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
855 long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
856 size_t len, int advice)
858 return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len,
862 asmlinkage long compat_sys_add_key(const char __user *_type,
863 const char __user *_description,
864 const void __user *_payload,
868 return sys_add_key(_type, _description, _payload, plen, ringid);
871 asmlinkage long compat_sys_request_key(const char __user *_type,
872 const char __user *_description,
873 const char __user *_callout_info,
876 return sys_request_key(_type, _description, _callout_info, destringid);