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>
44 #include <linux/ipc.h>
46 #include <asm/ptrace.h>
47 #include <asm/types.h>
48 #include <asm/uaccess.h>
49 #include <asm/unistd.h>
51 #include <asm/mmu_context.h>
52 #include <asm/ppc-pci.h>
53 #include <asm/syscalls.h>
56 asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
57 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
61 return compat_sys_select((int)n, inp, outp, exp, compat_ptr(tvp_x));
64 /* Note: it is necessary to treat option as an unsigned int,
65 * with the corresponding cast to a signed int to insure that the
66 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
67 * and the register representation of a signed int (msr in 64-bit mode) is performed.
69 asmlinkage long compat_sys_sysfs(u32 option, u32 arg1, u32 arg2)
71 return sys_sysfs((int)option, arg1, arg2);
74 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
78 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
80 if (__get_user(o->tv_sec, &i->tv_sec))
82 if (__get_user(usec, &i->tv_usec))
84 o->tv_nsec = usec * 1000;
88 static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
90 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
91 (__put_user(i->tv_sec, &o->tv_sec) |
92 __put_user(i->tv_usec, &o->tv_usec)));
98 /* Translations due to time_t size differences. Which affects all
99 sorts of things, like timeval and itimerval. */
100 extern struct timezone sys_tz;
102 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
106 do_gettimeofday(&ktv);
107 if (put_tv32(tv, &ktv))
111 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
120 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
126 if (get_ts32(&kts, tv))
130 if (copy_from_user(&ktz, tz, sizeof(ktz)))
134 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
137 #ifdef CONFIG_SYSVIPC
138 long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr,
143 version = call >> 16; /* hack for backward compatibility */
150 /* sign extend semid */
151 return compat_sys_semtimedop((int)first,
152 compat_ptr(ptr), second,
154 /* else fall through for normal semop() */
156 /* struct sembuf is the same on 32 and 64bit :)) */
157 /* sign extend semid */
158 return sys_semtimedop((int)first, compat_ptr(ptr), second,
161 /* sign extend key, nsems */
162 return sys_semget((int)first, (int)second, third);
164 /* sign extend semid, semnum */
165 return compat_sys_semctl((int)first, (int)second, third,
169 /* sign extend msqid */
170 return compat_sys_msgsnd((int)first, (int)second, third,
173 /* sign extend msqid, msgtyp */
174 return compat_sys_msgrcv((int)first, second, (int)fifth,
175 third, version, compat_ptr(ptr));
177 /* sign extend key */
178 return sys_msgget((int)first, second);
180 /* sign extend msqid */
181 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
184 /* sign extend shmid */
185 return compat_sys_shmat((int)first, second, third, version,
188 return sys_shmdt(compat_ptr(ptr));
190 /* sign extend key_t */
191 return sys_shmget((int)first, second, third);
193 /* sign extend shmid */
194 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
204 /* Note: it is necessary to treat out_fd and in_fd as unsigned ints,
205 * with the corresponding cast to a signed int to insure that the
206 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
207 * and the register representation of a signed int (msr in 64-bit mode) is performed.
209 asmlinkage long compat_sys_sendfile(u32 out_fd, u32 in_fd, compat_off_t __user * offset, u32 count)
211 mm_segment_t old_fs = get_fs();
216 if (offset && get_user(of, offset))
219 /* The __user pointer cast is valid because of the set_fs() */
221 up = offset ? (off_t __user *) &of : NULL;
222 ret = sys_sendfile((int)out_fd, (int)in_fd, up, count);
225 if (offset && put_user(of, offset))
231 asmlinkage int compat_sys_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
233 mm_segment_t old_fs = get_fs();
238 if (offset && get_user(lof, offset))
241 /* The __user pointer cast is valid because of the set_fs() */
243 up = offset ? (loff_t __user *) &lof : NULL;
244 ret = sys_sendfile64(out_fd, in_fd, up, count);
247 if (offset && put_user(lof, offset))
253 long compat_sys_execve(unsigned long a0, unsigned long a1, unsigned long a2,
254 unsigned long a3, unsigned long a4, unsigned long a5,
255 struct pt_regs *regs)
260 filename = getname((char __user *) a0);
261 error = PTR_ERR(filename);
262 if (IS_ERR(filename))
264 flush_fp_to_thread(current);
265 flush_altivec_to_thread(current);
267 error = compat_do_execve(filename, compat_ptr(a1), compat_ptr(a2), regs);
275 /* Note: it is necessary to treat option as an unsigned int,
276 * with the corresponding cast to a signed int to insure that the
277 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
278 * and the register representation of a signed int (msr in 64-bit mode) is performed.
280 asmlinkage long compat_sys_prctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
282 return sys_prctl((int)option,
283 (unsigned long) arg2,
284 (unsigned long) arg3,
285 (unsigned long) arg4,
286 (unsigned long) arg5);
289 /* Note: it is necessary to treat pid as an unsigned int,
290 * with the corresponding cast to a signed int to insure that the
291 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
292 * and the register representation of a signed int (msr in 64-bit mode) is performed.
294 asmlinkage long compat_sys_sched_rr_get_interval(u32 pid, struct compat_timespec __user *interval)
298 mm_segment_t old_fs = get_fs ();
300 /* The __user pointer cast is valid because of the set_fs() */
302 ret = sys_sched_rr_get_interval((int)pid, (struct timespec __user *) &t);
304 if (put_compat_timespec(&t, interval))
309 /* Note: it is necessary to treat mode as an unsigned int,
310 * with the corresponding cast to a signed int to insure that the
311 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
312 * and the register representation of a signed int (msr in 64-bit mode) is performed.
314 asmlinkage long compat_sys_access(const char __user * filename, u32 mode)
316 return sys_access(filename, (int)mode);
320 /* Note: it is necessary to treat mode as an unsigned int,
321 * with the corresponding cast to a signed int to insure that the
322 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
323 * and the register representation of a signed int (msr in 64-bit mode) is performed.
325 asmlinkage long compat_sys_creat(const char __user * pathname, u32 mode)
327 return sys_creat(pathname, (int)mode);
331 /* Note: it is necessary to treat pid and options as unsigned ints,
332 * with the corresponding cast to a signed int to insure that the
333 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
334 * and the register representation of a signed int (msr in 64-bit mode) is performed.
336 asmlinkage long compat_sys_waitpid(u32 pid, unsigned int __user * stat_addr, u32 options)
338 return sys_waitpid((int)pid, stat_addr, (int)options);
342 /* Note: it is necessary to treat gidsetsize as an unsigned int,
343 * with the corresponding cast to a signed int to insure that the
344 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
345 * and the register representation of a signed int (msr in 64-bit mode) is performed.
347 asmlinkage long compat_sys_getgroups(u32 gidsetsize, gid_t __user *grouplist)
349 return sys_getgroups((int)gidsetsize, grouplist);
353 /* Note: it is necessary to treat pid as an unsigned int,
354 * with the corresponding cast to a signed int to insure that the
355 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
356 * and the register representation of a signed int (msr in 64-bit mode) is performed.
358 asmlinkage long compat_sys_getpgid(u32 pid)
360 return sys_getpgid((int)pid);
365 /* Note: it is necessary to treat pid as an unsigned int,
366 * with the corresponding cast to a signed int to insure that the
367 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
368 * and the register representation of a signed int (msr in 64-bit mode) is performed.
370 asmlinkage long compat_sys_getsid(u32 pid)
372 return sys_getsid((int)pid);
376 /* Note: it is necessary to treat pid and sig as unsigned ints,
377 * with the corresponding cast to a signed int to insure that the
378 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
379 * and the register representation of a signed int (msr in 64-bit mode) is performed.
381 asmlinkage long compat_sys_kill(u32 pid, u32 sig)
383 return sys_kill((int)pid, (int)sig);
387 /* Note: it is necessary to treat mode as an unsigned int,
388 * with the corresponding cast to a signed int to insure that the
389 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
390 * and the register representation of a signed int (msr in 64-bit mode) is performed.
392 asmlinkage long compat_sys_mkdir(const char __user * pathname, u32 mode)
394 return sys_mkdir(pathname, (int)mode);
397 long compat_sys_nice(u32 increment)
399 /* sign extend increment */
400 return sys_nice((int)increment);
403 off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin)
406 return sys_lseek(fd, (int)offset, origin);
409 /* Note: it is necessary to treat bufsiz as an unsigned int,
410 * with the corresponding cast to a signed int to insure that the
411 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
412 * and the register representation of a signed int (msr in 64-bit mode) is performed.
414 asmlinkage long compat_sys_readlink(const char __user * path, char __user * buf, u32 bufsiz)
416 return sys_readlink(path, buf, (int)bufsiz);
419 /* Note: it is necessary to treat option as an unsigned int,
420 * with the corresponding cast to a signed int to insure that the
421 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
422 * and the register representation of a signed int (msr in 64-bit mode) is performed.
424 asmlinkage long compat_sys_sched_get_priority_max(u32 policy)
426 return sys_sched_get_priority_max((int)policy);
430 /* Note: it is necessary to treat policy as an unsigned int,
431 * with the corresponding cast to a signed int to insure that the
432 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
433 * and the register representation of a signed int (msr in 64-bit mode) is performed.
435 asmlinkage long compat_sys_sched_get_priority_min(u32 policy)
437 return sys_sched_get_priority_min((int)policy);
441 /* Note: it is necessary to treat pid as an unsigned int,
442 * with the corresponding cast to a signed int to insure that the
443 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
444 * and the register representation of a signed int (msr in 64-bit mode) is performed.
446 asmlinkage long compat_sys_sched_getparam(u32 pid, struct sched_param __user *param)
448 return sys_sched_getparam((int)pid, param);
452 /* Note: it is necessary to treat pid as an unsigned int,
453 * with the corresponding cast to a signed int to insure that the
454 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
455 * and the register representation of a signed int (msr in 64-bit mode) is performed.
457 asmlinkage long compat_sys_sched_getscheduler(u32 pid)
459 return sys_sched_getscheduler((int)pid);
463 /* Note: it is necessary to treat pid as an unsigned int,
464 * with the corresponding cast to a signed int to insure that the
465 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
466 * and the register representation of a signed int (msr in 64-bit mode) is performed.
468 asmlinkage long compat_sys_sched_setparam(u32 pid, struct sched_param __user *param)
470 return sys_sched_setparam((int)pid, param);
474 /* Note: it is necessary to treat pid and policy as unsigned ints,
475 * with the corresponding cast to a signed int to insure that the
476 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
477 * and the register representation of a signed int (msr in 64-bit mode) is performed.
479 asmlinkage long compat_sys_sched_setscheduler(u32 pid, u32 policy, struct sched_param __user *param)
481 return sys_sched_setscheduler((int)pid, (int)policy, param);
485 /* Note: it is necessary to treat len as an unsigned int,
486 * with the corresponding cast to a signed int to insure that the
487 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
488 * and the register representation of a signed int (msr in 64-bit mode) is performed.
490 asmlinkage long compat_sys_setdomainname(char __user *name, u32 len)
492 return sys_setdomainname(name, (int)len);
496 /* Note: it is necessary to treat gidsetsize as an unsigned int,
497 * with the corresponding cast to a signed int to insure that the
498 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
499 * and the register representation of a signed int (msr in 64-bit mode) is performed.
501 asmlinkage long compat_sys_setgroups(u32 gidsetsize, gid_t __user *grouplist)
503 return sys_setgroups((int)gidsetsize, grouplist);
507 asmlinkage long compat_sys_sethostname(char __user *name, u32 len)
509 /* sign extend len */
510 return sys_sethostname(name, (int)len);
514 /* Note: it is necessary to treat pid and pgid as unsigned ints,
515 * with the corresponding cast to a signed int to insure that the
516 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
517 * and the register representation of a signed int (msr in 64-bit mode) is performed.
519 asmlinkage long compat_sys_setpgid(u32 pid, u32 pgid)
521 return sys_setpgid((int)pid, (int)pgid);
524 long compat_sys_getpriority(u32 which, u32 who)
526 /* sign extend which and who */
527 return sys_getpriority((int)which, (int)who);
530 long compat_sys_setpriority(u32 which, u32 who, u32 niceval)
532 /* sign extend which, who and niceval */
533 return sys_setpriority((int)which, (int)who, (int)niceval);
536 long compat_sys_ioprio_get(u32 which, u32 who)
538 /* sign extend which and who */
539 return sys_ioprio_get((int)which, (int)who);
542 long compat_sys_ioprio_set(u32 which, u32 who, u32 ioprio)
544 /* sign extend which, who and ioprio */
545 return sys_ioprio_set((int)which, (int)who, (int)ioprio);
548 /* Note: it is necessary to treat newmask as an unsigned int,
549 * with the corresponding cast to a signed int to insure that the
550 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
551 * and the register representation of a signed int (msr in 64-bit mode) is performed.
553 asmlinkage long compat_sys_ssetmask(u32 newmask)
555 return sys_ssetmask((int) newmask);
558 asmlinkage long compat_sys_syslog(u32 type, char __user * buf, u32 len)
560 /* sign extend len */
561 return sys_syslog(type, buf, (int)len);
565 /* Note: it is necessary to treat mask as an unsigned int,
566 * with the corresponding cast to a signed int to insure that the
567 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
568 * and the register representation of a signed int (msr in 64-bit mode) is performed.
570 asmlinkage long compat_sys_umask(u32 mask)
572 return sys_umask((int)mask);
575 #ifdef CONFIG_SYSCTL_SYSCALL
576 struct __sysctl_args32 {
586 asmlinkage long compat_sys_sysctl(struct __sysctl_args32 __user *args)
588 struct __sysctl_args32 tmp;
591 size_t __user *oldlenp = NULL;
592 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
594 if (copy_from_user(&tmp, args, sizeof(tmp)))
597 if (tmp.oldval && tmp.oldlenp) {
598 /* Duh, this is ugly and might not work if sysctl_args
599 is in read-only memory, but do_sysctl does indirectly
600 a lot of uaccess in both directions and we'd have to
601 basically copy the whole sysctl.c here, and
602 glibc's __sysctl uses rw memory for the structure
604 oldlenp = (size_t __user *)addr;
605 if (get_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)) ||
606 put_user(oldlen, oldlenp))
611 error = do_sysctl(compat_ptr(tmp.name), tmp.nlen,
612 compat_ptr(tmp.oldval), oldlenp,
613 compat_ptr(tmp.newval), tmp.newlen);
617 if (get_user(oldlen, oldlenp) ||
618 put_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)))
621 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
627 unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
628 unsigned long prot, unsigned long flags,
629 unsigned long fd, unsigned long pgoff)
631 /* This should remain 12 even if PAGE_SIZE changes */
632 return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
635 long compat_sys_tgkill(u32 tgid, u32 pid, int sig)
637 /* sign extend tgid, pid */
638 return sys_tgkill((int)tgid, (int)pid, sig);
643 * The 32 bit ABI passes long longs in an odd even register pair.
646 compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
647 u32 reg6, u32 poshi, u32 poslo)
649 return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
652 compat_ssize_t compat_sys_pwrite64(unsigned int fd, char __user *ubuf, compat_size_t count,
653 u32 reg6, u32 poshi, u32 poslo)
655 return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
658 compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
660 return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
663 asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,
664 unsigned long high, unsigned long low)
666 return sys_truncate(path, (high << 32) | low);
669 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
670 u32 lenhi, u32 lenlo)
672 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
673 ((loff_t)lenhi << 32) | lenlo);
676 asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
679 return sys_ftruncate(fd, (high << 32) | low);
682 long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
685 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
689 long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
690 size_t len, int advice)
692 return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len,
696 asmlinkage long compat_sys_add_key(const char __user *_type,
697 const char __user *_description,
698 const void __user *_payload,
702 return sys_add_key(_type, _description, _payload, plen, ringid);
705 asmlinkage long compat_sys_request_key(const char __user *_type,
706 const char __user *_description,
707 const char __user *_callout_info,
710 return sys_request_key(_type, _description, _callout_info, destringid);
713 asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags,
714 unsigned offset_hi, unsigned offset_lo,
715 unsigned nbytes_hi, unsigned nbytes_lo)
717 loff_t offset = ((loff_t)offset_hi << 32) | offset_lo;
718 loff_t nbytes = ((loff_t)nbytes_hi << 32) | nbytes_lo;
720 return sys_sync_file_range(fd, offset, nbytes, flags);