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/config.h>
18 #include <linux/kernel.h>
19 #include <linux/sched.h>
22 #include <linux/file.h>
23 #include <linux/signal.h>
24 #include <linux/resource.h>
25 #include <linux/times.h>
26 #include <linux/utsname.h>
27 #include <linux/timex.h>
28 #include <linux/smp.h>
29 #include <linux/smp_lock.h>
30 #include <linux/sem.h>
31 #include <linux/msg.h>
32 #include <linux/shm.h>
33 #include <linux/poll.h>
34 #include <linux/personality.h>
35 #include <linux/stat.h>
36 #include <linux/mman.h>
38 #include <linux/syscalls.h>
39 #include <linux/unistd.h>
40 #include <linux/sysctl.h>
41 #include <linux/binfmts.h>
42 #include <linux/security.h>
43 #include <linux/compat.h>
44 #include <linux/ptrace.h>
45 #include <linux/elf.h>
47 #include <asm/ptrace.h>
48 #include <asm/types.h>
50 #include <asm/uaccess.h>
51 #include <asm/unistd.h>
52 #include <asm/semaphore.h>
54 #include <asm/mmu_context.h>
55 #include <asm/ppc-pci.h>
57 /* readdir & getdents */
58 #define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
59 #define ROUND_UP(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
61 struct old_linux_dirent32 {
64 unsigned short d_namlen;
68 struct readdir_callback32 {
69 struct old_linux_dirent32 __user * dirent;
73 static int fillonedir(void * __buf, const char * name, int namlen,
74 off_t offset, ino_t ino, unsigned int d_type)
76 struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf;
77 struct old_linux_dirent32 __user * dirent;
83 put_user(ino, &dirent->d_ino);
84 put_user(offset, &dirent->d_offset);
85 put_user(namlen, &dirent->d_namlen);
86 copy_to_user(dirent->d_name, name, namlen);
87 put_user(0, dirent->d_name + namlen);
91 asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count)
95 struct readdir_callback32 buf;
104 error = vfs_readdir(file, (filldir_t)fillonedir, &buf);
115 asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
116 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
120 return compat_sys_select((int)n, inp, outp, exp, compat_ptr(tvp_x));
123 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
127 if (stat->size > MAX_NON_LFS || !new_valid_dev(stat->dev) ||
128 !new_valid_dev(stat->rdev))
131 err = access_ok(VERIFY_WRITE, statbuf, sizeof(*statbuf)) ? 0 : -EFAULT;
132 err |= __put_user(new_encode_dev(stat->dev), &statbuf->st_dev);
133 err |= __put_user(stat->ino, &statbuf->st_ino);
134 err |= __put_user(stat->mode, &statbuf->st_mode);
135 err |= __put_user(stat->nlink, &statbuf->st_nlink);
136 err |= __put_user(stat->uid, &statbuf->st_uid);
137 err |= __put_user(stat->gid, &statbuf->st_gid);
138 err |= __put_user(new_encode_dev(stat->rdev), &statbuf->st_rdev);
139 err |= __put_user(stat->size, &statbuf->st_size);
140 err |= __put_user(stat->atime.tv_sec, &statbuf->st_atime);
141 err |= __put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
142 err |= __put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
143 err |= __put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
144 err |= __put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
145 err |= __put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
146 err |= __put_user(stat->blksize, &statbuf->st_blksize);
147 err |= __put_user(stat->blocks, &statbuf->st_blocks);
148 err |= __put_user(0, &statbuf->__unused4[0]);
149 err |= __put_user(0, &statbuf->__unused4[1]);
154 /* Note: it is necessary to treat option as an unsigned int,
155 * with the corresponding cast to a signed int to insure that the
156 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
157 * and the register representation of a signed int (msr in 64-bit mode) is performed.
159 asmlinkage long compat_sys_sysfs(u32 option, u32 arg1, u32 arg2)
161 return sys_sysfs((int)option, arg1, arg2);
164 /* Handle adjtimex compatibility. */
165 extern int do_adjtimex(struct timex *);
167 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp)
172 memset(&txc, 0, sizeof(struct timex));
174 if(get_user(txc.modes, &utp->modes) ||
175 __get_user(txc.offset, &utp->offset) ||
176 __get_user(txc.freq, &utp->freq) ||
177 __get_user(txc.maxerror, &utp->maxerror) ||
178 __get_user(txc.esterror, &utp->esterror) ||
179 __get_user(txc.status, &utp->status) ||
180 __get_user(txc.constant, &utp->constant) ||
181 __get_user(txc.precision, &utp->precision) ||
182 __get_user(txc.tolerance, &utp->tolerance) ||
183 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
184 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
185 __get_user(txc.tick, &utp->tick) ||
186 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
187 __get_user(txc.jitter, &utp->jitter) ||
188 __get_user(txc.shift, &utp->shift) ||
189 __get_user(txc.stabil, &utp->stabil) ||
190 __get_user(txc.jitcnt, &utp->jitcnt) ||
191 __get_user(txc.calcnt, &utp->calcnt) ||
192 __get_user(txc.errcnt, &utp->errcnt) ||
193 __get_user(txc.stbcnt, &utp->stbcnt))
196 ret = do_adjtimex(&txc);
198 if(put_user(txc.modes, &utp->modes) ||
199 __put_user(txc.offset, &utp->offset) ||
200 __put_user(txc.freq, &utp->freq) ||
201 __put_user(txc.maxerror, &utp->maxerror) ||
202 __put_user(txc.esterror, &utp->esterror) ||
203 __put_user(txc.status, &utp->status) ||
204 __put_user(txc.constant, &utp->constant) ||
205 __put_user(txc.precision, &utp->precision) ||
206 __put_user(txc.tolerance, &utp->tolerance) ||
207 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
208 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
209 __put_user(txc.tick, &utp->tick) ||
210 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
211 __put_user(txc.jitter, &utp->jitter) ||
212 __put_user(txc.shift, &utp->shift) ||
213 __put_user(txc.stabil, &utp->stabil) ||
214 __put_user(txc.jitcnt, &utp->jitcnt) ||
215 __put_user(txc.calcnt, &utp->calcnt) ||
216 __put_user(txc.errcnt, &utp->errcnt) ||
217 __put_user(txc.stbcnt, &utp->stbcnt))
223 asmlinkage long compat_sys_pause(void)
225 current->state = TASK_INTERRUPTIBLE;
228 return -ERESTARTNOHAND;
231 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
235 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
237 if (__get_user(o->tv_sec, &i->tv_sec))
239 if (__get_user(usec, &i->tv_usec))
241 o->tv_nsec = usec * 1000;
245 static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
247 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
248 (__put_user(i->tv_sec, &o->tv_sec) |
249 __put_user(i->tv_usec, &o->tv_usec)));
261 unsigned short procs;
266 char _f[20-2*sizeof(int)-sizeof(int)];
269 asmlinkage long compat_sys_sysinfo(struct sysinfo32 __user *info)
274 mm_segment_t old_fs = get_fs ();
276 /* The __user cast is valid due to set_fs() */
278 ret = sys_sysinfo((struct sysinfo __user *)&s);
281 /* Check to see if any memory value is too large for 32-bit and
282 * scale down if needed.
284 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
285 while (s.mem_unit < PAGE_SIZE) {
289 s.totalram >>=bitcount;
290 s.freeram >>= bitcount;
291 s.sharedram >>= bitcount;
292 s.bufferram >>= bitcount;
293 s.totalswap >>= bitcount;
294 s.freeswap >>= bitcount;
295 s.totalhigh >>= bitcount;
296 s.freehigh >>= bitcount;
299 err = put_user (s.uptime, &info->uptime);
300 err |= __put_user (s.loads[0], &info->loads[0]);
301 err |= __put_user (s.loads[1], &info->loads[1]);
302 err |= __put_user (s.loads[2], &info->loads[2]);
303 err |= __put_user (s.totalram, &info->totalram);
304 err |= __put_user (s.freeram, &info->freeram);
305 err |= __put_user (s.sharedram, &info->sharedram);
306 err |= __put_user (s.bufferram, &info->bufferram);
307 err |= __put_user (s.totalswap, &info->totalswap);
308 err |= __put_user (s.freeswap, &info->freeswap);
309 err |= __put_user (s.procs, &info->procs);
310 err |= __put_user (s.totalhigh, &info->totalhigh);
311 err |= __put_user (s.freehigh, &info->freehigh);
312 err |= __put_user (s.mem_unit, &info->mem_unit);
322 /* Translations due to time_t size differences. Which affects all
323 sorts of things, like timeval and itimerval. */
324 extern struct timezone sys_tz;
326 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
330 do_gettimeofday(&ktv);
331 if (put_tv32(tv, &ktv))
335 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
344 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
350 if (get_ts32(&kts, tv))
354 if (copy_from_user(&ktz, tz, sizeof(ktz)))
358 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
361 #ifdef CONFIG_SYSVIPC
362 long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr,
367 version = call >> 16; /* hack for backward compatibility */
374 /* sign extend semid */
375 return compat_sys_semtimedop((int)first,
376 compat_ptr(ptr), second,
378 /* else fall through for normal semop() */
380 /* struct sembuf is the same on 32 and 64bit :)) */
381 /* sign extend semid */
382 return sys_semtimedop((int)first, compat_ptr(ptr), second,
385 /* sign extend key, nsems */
386 return sys_semget((int)first, (int)second, third);
388 /* sign extend semid, semnum */
389 return compat_sys_semctl((int)first, (int)second, third,
393 /* sign extend msqid */
394 return compat_sys_msgsnd((int)first, (int)second, third,
397 /* sign extend msqid, msgtyp */
398 return compat_sys_msgrcv((int)first, second, (int)fifth,
399 third, version, compat_ptr(ptr));
401 /* sign extend key */
402 return sys_msgget((int)first, second);
404 /* sign extend msqid */
405 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
408 /* sign extend shmid */
409 return compat_sys_shmat((int)first, second, third, version,
412 return sys_shmdt(compat_ptr(ptr));
414 /* sign extend key_t */
415 return sys_shmget((int)first, second, third);
417 /* sign extend shmid */
418 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
428 /* Note: it is necessary to treat out_fd and in_fd as unsigned ints,
429 * with the corresponding cast to a signed int to insure that the
430 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
431 * and the register representation of a signed int (msr in 64-bit mode) is performed.
433 asmlinkage long compat_sys_sendfile(u32 out_fd, u32 in_fd, compat_off_t __user * offset, u32 count)
435 mm_segment_t old_fs = get_fs();
440 if (offset && get_user(of, offset))
443 /* The __user pointer cast is valid because of the set_fs() */
445 up = offset ? (off_t __user *) &of : NULL;
446 ret = sys_sendfile((int)out_fd, (int)in_fd, up, count);
449 if (offset && put_user(of, offset))
455 asmlinkage int compat_sys_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
457 mm_segment_t old_fs = get_fs();
462 if (offset && get_user(lof, offset))
465 /* The __user pointer cast is valid because of the set_fs() */
467 up = offset ? (loff_t __user *) &lof : NULL;
468 ret = sys_sendfile64(out_fd, in_fd, up, count);
471 if (offset && put_user(lof, offset))
477 long compat_sys_execve(unsigned long a0, unsigned long a1, unsigned long a2,
478 unsigned long a3, unsigned long a4, unsigned long a5,
479 struct pt_regs *regs)
484 filename = getname((char __user *) a0);
485 error = PTR_ERR(filename);
486 if (IS_ERR(filename))
488 flush_fp_to_thread(current);
489 flush_altivec_to_thread(current);
491 error = compat_do_execve(filename, compat_ptr(a1), compat_ptr(a2), regs);
495 current->ptrace &= ~PT_DTRACE;
496 task_unlock(current);
504 /* Note: it is necessary to treat option as an unsigned int,
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_prctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
511 return sys_prctl((int)option,
512 (unsigned long) arg2,
513 (unsigned long) arg3,
514 (unsigned long) arg4,
515 (unsigned long) arg5);
518 /* Note: it is necessary to treat pid as an unsigned int,
519 * with the corresponding cast to a signed int to insure that the
520 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
521 * and the register representation of a signed int (msr in 64-bit mode) is performed.
523 asmlinkage long compat_sys_sched_rr_get_interval(u32 pid, struct compat_timespec __user *interval)
527 mm_segment_t old_fs = get_fs ();
529 /* The __user pointer cast is valid because of the set_fs() */
531 ret = sys_sched_rr_get_interval((int)pid, (struct timespec __user *) &t);
533 if (put_compat_timespec(&t, interval))
538 /* Note: it is necessary to treat mode 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_access(const char __user * filename, u32 mode)
545 return sys_access(filename, (int)mode);
549 /* Note: it is necessary to treat mode as an unsigned int,
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_creat(const char __user * pathname, u32 mode)
556 return sys_creat(pathname, (int)mode);
560 /* Note: it is necessary to treat pid and options as unsigned ints,
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_waitpid(u32 pid, unsigned int __user * stat_addr, u32 options)
567 return sys_waitpid((int)pid, stat_addr, (int)options);
571 /* Note: it is necessary to treat gidsetsize as an unsigned int,
572 * with the corresponding cast to a signed int to insure that the
573 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
574 * and the register representation of a signed int (msr in 64-bit mode) is performed.
576 asmlinkage long compat_sys_getgroups(u32 gidsetsize, gid_t __user *grouplist)
578 return sys_getgroups((int)gidsetsize, grouplist);
582 /* Note: it is necessary to treat pid 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_getpgid(u32 pid)
589 return sys_getpgid((int)pid);
594 /* Note: it is necessary to treat pid as an unsigned int,
595 * with the corresponding cast to a signed int to insure that the
596 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
597 * and the register representation of a signed int (msr in 64-bit mode) is performed.
599 asmlinkage long compat_sys_getsid(u32 pid)
601 return sys_getsid((int)pid);
605 /* Note: it is necessary to treat pid and sig as unsigned ints,
606 * with the corresponding cast to a signed int to insure that the
607 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
608 * and the register representation of a signed int (msr in 64-bit mode) is performed.
610 asmlinkage long compat_sys_kill(u32 pid, u32 sig)
612 return sys_kill((int)pid, (int)sig);
616 /* Note: it is necessary to treat mode as an unsigned int,
617 * with the corresponding cast to a signed int to insure that the
618 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
619 * and the register representation of a signed int (msr in 64-bit mode) is performed.
621 asmlinkage long compat_sys_mkdir(const char __user * pathname, u32 mode)
623 return sys_mkdir(pathname, (int)mode);
626 long compat_sys_nice(u32 increment)
628 /* sign extend increment */
629 return sys_nice((int)increment);
632 off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin)
635 return sys_lseek(fd, (int)offset, origin);
638 /* Note: it is necessary to treat bufsiz as an unsigned int,
639 * with the corresponding cast to a signed int to insure that the
640 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
641 * and the register representation of a signed int (msr in 64-bit mode) is performed.
643 asmlinkage long compat_sys_readlink(const char __user * path, char __user * buf, u32 bufsiz)
645 return sys_readlink(path, buf, (int)bufsiz);
648 /* Note: it is necessary to treat option as an unsigned int,
649 * with the corresponding cast to a signed int to insure that the
650 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
651 * and the register representation of a signed int (msr in 64-bit mode) is performed.
653 asmlinkage long compat_sys_sched_get_priority_max(u32 policy)
655 return sys_sched_get_priority_max((int)policy);
659 /* Note: it is necessary to treat policy 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_sched_get_priority_min(u32 policy)
666 return sys_sched_get_priority_min((int)policy);
670 /* Note: it is necessary to treat pid as an unsigned int,
671 * with the corresponding cast to a signed int to insure that the
672 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
673 * and the register representation of a signed int (msr in 64-bit mode) is performed.
675 asmlinkage long compat_sys_sched_getparam(u32 pid, struct sched_param __user *param)
677 return sys_sched_getparam((int)pid, param);
681 /* Note: it is necessary to treat pid as an unsigned int,
682 * with the corresponding cast to a signed int to insure that the
683 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
684 * and the register representation of a signed int (msr in 64-bit mode) is performed.
686 asmlinkage long compat_sys_sched_getscheduler(u32 pid)
688 return sys_sched_getscheduler((int)pid);
692 /* Note: it is necessary to treat pid as an unsigned int,
693 * with the corresponding cast to a signed int to insure that the
694 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
695 * and the register representation of a signed int (msr in 64-bit mode) is performed.
697 asmlinkage long compat_sys_sched_setparam(u32 pid, struct sched_param __user *param)
699 return sys_sched_setparam((int)pid, param);
703 /* Note: it is necessary to treat pid and policy as unsigned ints,
704 * with the corresponding cast to a signed int to insure that the
705 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
706 * and the register representation of a signed int (msr in 64-bit mode) is performed.
708 asmlinkage long compat_sys_sched_setscheduler(u32 pid, u32 policy, struct sched_param __user *param)
710 return sys_sched_setscheduler((int)pid, (int)policy, param);
714 /* Note: it is necessary to treat len as an unsigned int,
715 * with the corresponding cast to a signed int to insure that the
716 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
717 * and the register representation of a signed int (msr in 64-bit mode) is performed.
719 asmlinkage long compat_sys_setdomainname(char __user *name, u32 len)
721 return sys_setdomainname(name, (int)len);
725 /* Note: it is necessary to treat gidsetsize as an unsigned int,
726 * with the corresponding cast to a signed int to insure that the
727 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
728 * and the register representation of a signed int (msr in 64-bit mode) is performed.
730 asmlinkage long compat_sys_setgroups(u32 gidsetsize, gid_t __user *grouplist)
732 return sys_setgroups((int)gidsetsize, grouplist);
736 asmlinkage long compat_sys_sethostname(char __user *name, u32 len)
738 /* sign extend len */
739 return sys_sethostname(name, (int)len);
743 /* Note: it is necessary to treat pid and pgid as unsigned ints,
744 * with the corresponding cast to a signed int to insure that the
745 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
746 * and the register representation of a signed int (msr in 64-bit mode) is performed.
748 asmlinkage long compat_sys_setpgid(u32 pid, u32 pgid)
750 return sys_setpgid((int)pid, (int)pgid);
753 long compat_sys_getpriority(u32 which, u32 who)
755 /* sign extend which and who */
756 return sys_getpriority((int)which, (int)who);
759 long compat_sys_setpriority(u32 which, u32 who, u32 niceval)
761 /* sign extend which, who and niceval */
762 return sys_setpriority((int)which, (int)who, (int)niceval);
765 long compat_sys_ioprio_get(u32 which, u32 who)
767 /* sign extend which and who */
768 return sys_ioprio_get((int)which, (int)who);
771 long compat_sys_ioprio_set(u32 which, u32 who, u32 ioprio)
773 /* sign extend which, who and ioprio */
774 return sys_ioprio_set((int)which, (int)who, (int)ioprio);
777 /* Note: it is necessary to treat newmask as an unsigned int,
778 * with the corresponding cast to a signed int to insure that the
779 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
780 * and the register representation of a signed int (msr in 64-bit mode) is performed.
782 asmlinkage long compat_sys_ssetmask(u32 newmask)
784 return sys_ssetmask((int) newmask);
787 asmlinkage long compat_sys_syslog(u32 type, char __user * buf, u32 len)
789 /* sign extend len */
790 return sys_syslog(type, buf, (int)len);
794 /* Note: it is necessary to treat mask as an unsigned int,
795 * with the corresponding cast to a signed int to insure that the
796 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
797 * and the register representation of a signed int (msr in 64-bit mode) is performed.
799 asmlinkage long compat_sys_umask(u32 mask)
801 return sys_umask((int)mask);
805 struct __sysctl_args32 {
815 asmlinkage long compat_sys_sysctl(struct __sysctl_args32 __user *args)
817 struct __sysctl_args32 tmp;
820 size_t __user *oldlenp = NULL;
821 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
823 if (copy_from_user(&tmp, args, sizeof(tmp)))
826 if (tmp.oldval && tmp.oldlenp) {
827 /* Duh, this is ugly and might not work if sysctl_args
828 is in read-only memory, but do_sysctl does indirectly
829 a lot of uaccess in both directions and we'd have to
830 basically copy the whole sysctl.c here, and
831 glibc's __sysctl uses rw memory for the structure
833 oldlenp = (size_t __user *)addr;
834 if (get_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)) ||
835 put_user(oldlen, oldlenp))
840 error = do_sysctl(compat_ptr(tmp.name), tmp.nlen,
841 compat_ptr(tmp.oldval), oldlenp,
842 compat_ptr(tmp.newval), tmp.newlen);
846 if (get_user(oldlen, oldlenp) ||
847 put_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)))
850 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
856 unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
857 unsigned long prot, unsigned long flags,
858 unsigned long fd, unsigned long pgoff)
860 /* This should remain 12 even if PAGE_SIZE changes */
861 return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
864 long compat_sys_tgkill(u32 tgid, u32 pid, int sig)
866 /* sign extend tgid, pid */
867 return sys_tgkill((int)tgid, (int)pid, sig);
872 * The 32 bit ABI passes long longs in an odd even register pair.
875 compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
876 u32 reg6, u32 poshi, u32 poslo)
878 return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
881 compat_ssize_t compat_sys_pwrite64(unsigned int fd, char __user *ubuf, compat_size_t count,
882 u32 reg6, u32 poshi, u32 poslo)
884 return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
887 compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
889 return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
892 asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,
893 unsigned long high, unsigned long low)
895 return sys_truncate(path, (high << 32) | low);
898 asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
901 return sys_ftruncate(fd, (high << 32) | low);
904 long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
907 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
911 long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
912 size_t len, int advice)
914 return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len,
918 asmlinkage long compat_sys_add_key(const char __user *_type,
919 const char __user *_description,
920 const void __user *_payload,
924 return sys_add_key(_type, _description, _payload, plen, ringid);
927 asmlinkage long compat_sys_request_key(const char __user *_type,
928 const char __user *_description,
929 const char __user *_callout_info,
932 return sys_request_key(_type, _description, _callout_info, destringid);