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/smp.h>
26 #include <linux/sem.h>
27 #include <linux/msg.h>
28 #include <linux/shm.h>
29 #include <linux/poll.h>
30 #include <linux/personality.h>
31 #include <linux/stat.h>
32 #include <linux/mman.h>
34 #include <linux/syscalls.h>
35 #include <linux/unistd.h>
36 #include <linux/sysctl.h>
37 #include <linux/binfmts.h>
38 #include <linux/security.h>
39 #include <linux/compat.h>
40 #include <linux/ptrace.h>
41 #include <linux/elf.h>
42 #include <linux/ipc.h>
43 #include <linux/slab.h>
45 #include <asm/ptrace.h>
46 #include <asm/types.h>
47 #include <asm/uaccess.h>
48 #include <asm/unistd.h>
50 #include <asm/mmu_context.h>
51 #include <asm/ppc-pci.h>
52 #include <asm/syscalls.h>
53 #include <asm/switch_to.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);
75 long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr,
80 version = call >> 16; /* hack for backward compatibility */
87 /* sign extend semid */
88 return compat_sys_semtimedop((int)first,
89 compat_ptr(ptr), second,
91 /* else fall through for normal semop() */
93 /* struct sembuf is the same on 32 and 64bit :)) */
94 /* sign extend semid */
95 return sys_semtimedop((int)first, compat_ptr(ptr), second,
98 /* sign extend key, nsems */
99 return sys_semget((int)first, (int)second, third);
101 /* sign extend semid, semnum */
102 return compat_sys_semctl((int)first, (int)second, third,
106 /* sign extend msqid */
107 return compat_sys_msgsnd((int)first, (int)second, third,
110 /* sign extend msqid, msgtyp */
111 return compat_sys_msgrcv((int)first, second, (int)fifth,
112 third, version, compat_ptr(ptr));
114 /* sign extend key */
115 return sys_msgget((int)first, second);
117 /* sign extend msqid */
118 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
121 /* sign extend shmid */
122 return compat_sys_shmat((int)first, second, third, version,
125 return sys_shmdt(compat_ptr(ptr));
127 /* sign extend key_t */
128 return sys_shmget((int)first, second, third);
130 /* sign extend shmid */
131 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
141 /* Note: it is necessary to treat out_fd and in_fd as unsigned ints,
142 * with the corresponding cast to a signed int to insure that the
143 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
144 * and the register representation of a signed int (msr in 64-bit mode) is performed.
146 asmlinkage long compat_sys_sendfile_wrapper(u32 out_fd, u32 in_fd,
147 compat_off_t __user *offset, u32 count)
149 return compat_sys_sendfile((int)out_fd, (int)in_fd, offset, count);
152 asmlinkage long compat_sys_sendfile64_wrapper(u32 out_fd, u32 in_fd,
153 compat_loff_t __user *offset, u32 count)
155 return sys_sendfile((int)out_fd, (int)in_fd,
156 (off_t __user *)offset, count);
159 long compat_sys_execve(unsigned long a0, unsigned long a1, unsigned long a2,
160 unsigned long a3, unsigned long a4, unsigned long a5,
161 struct pt_regs *regs)
166 filename = getname((char __user *) a0);
167 error = PTR_ERR(filename);
168 if (IS_ERR(filename))
170 flush_fp_to_thread(current);
171 flush_altivec_to_thread(current);
173 error = compat_do_execve(filename, compat_ptr(a1), compat_ptr(a2), regs);
181 /* Note: it is necessary to treat option as an unsigned int,
182 * with the corresponding cast to a signed int to insure that the
183 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
184 * and the register representation of a signed int (msr in 64-bit mode) is performed.
186 asmlinkage long compat_sys_prctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
188 return sys_prctl((int)option,
189 (unsigned long) arg2,
190 (unsigned long) arg3,
191 (unsigned long) arg4,
192 (unsigned long) arg5);
195 /* Note: it is necessary to treat pid as an unsigned int,
196 * with the corresponding cast to a signed int to insure that the
197 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
198 * and the register representation of a signed int (msr in 64-bit mode) is performed.
200 asmlinkage long compat_sys_sched_rr_get_interval(u32 pid, struct compat_timespec __user *interval)
204 mm_segment_t old_fs = get_fs ();
206 /* The __user pointer cast is valid because of the set_fs() */
208 ret = sys_sched_rr_get_interval((int)pid, (struct timespec __user *) &t);
210 if (put_compat_timespec(&t, interval))
215 /* Note: it is necessary to treat mode as an unsigned int,
216 * with the corresponding cast to a signed int to insure that the
217 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
218 * and the register representation of a signed int (msr in 64-bit mode) is performed.
220 asmlinkage long compat_sys_access(const char __user * filename, u32 mode)
222 return sys_access(filename, (int)mode);
226 /* Note: it is necessary to treat mode as an unsigned int,
227 * with the corresponding cast to a signed int to insure that the
228 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
229 * and the register representation of a signed int (msr in 64-bit mode) is performed.
231 asmlinkage long compat_sys_creat(const char __user * pathname, u32 mode)
233 return sys_creat(pathname, (int)mode);
237 /* Note: it is necessary to treat pid and options as unsigned ints,
238 * with the corresponding cast to a signed int to insure that the
239 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
240 * and the register representation of a signed int (msr in 64-bit mode) is performed.
242 asmlinkage long compat_sys_waitpid(u32 pid, unsigned int __user * stat_addr, u32 options)
244 return sys_waitpid((int)pid, stat_addr, (int)options);
248 /* Note: it is necessary to treat gidsetsize as an unsigned int,
249 * with the corresponding cast to a signed int to insure that the
250 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
251 * and the register representation of a signed int (msr in 64-bit mode) is performed.
253 asmlinkage long compat_sys_getgroups(u32 gidsetsize, gid_t __user *grouplist)
255 return sys_getgroups((int)gidsetsize, grouplist);
259 /* Note: it is necessary to treat pid as an unsigned int,
260 * with the corresponding cast to a signed int to insure that the
261 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
262 * and the register representation of a signed int (msr in 64-bit mode) is performed.
264 asmlinkage long compat_sys_getpgid(u32 pid)
266 return sys_getpgid((int)pid);
271 /* Note: it is necessary to treat pid as an unsigned int,
272 * with the corresponding cast to a signed int to insure that the
273 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
274 * and the register representation of a signed int (msr in 64-bit mode) is performed.
276 asmlinkage long compat_sys_getsid(u32 pid)
278 return sys_getsid((int)pid);
282 /* Note: it is necessary to treat pid and sig as unsigned ints,
283 * with the corresponding cast to a signed int to insure that the
284 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
285 * and the register representation of a signed int (msr in 64-bit mode) is performed.
287 asmlinkage long compat_sys_kill(u32 pid, u32 sig)
289 return sys_kill((int)pid, (int)sig);
293 /* Note: it is necessary to treat mode as an unsigned int,
294 * with the corresponding cast to a signed int to insure that the
295 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
296 * and the register representation of a signed int (msr in 64-bit mode) is performed.
298 asmlinkage long compat_sys_mkdir(const char __user * pathname, u32 mode)
300 return sys_mkdir(pathname, (int)mode);
303 long compat_sys_nice(u32 increment)
305 /* sign extend increment */
306 return sys_nice((int)increment);
309 off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin)
312 return sys_lseek(fd, (int)offset, origin);
315 long compat_sys_truncate(const char __user * path, u32 length)
317 /* sign extend length */
318 return sys_truncate(path, (int)length);
321 long compat_sys_ftruncate(int fd, u32 length)
323 /* sign extend length */
324 return sys_ftruncate(fd, (int)length);
327 /* Note: it is necessary to treat bufsiz as an unsigned int,
328 * with the corresponding cast to a signed int to insure that the
329 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
330 * and the register representation of a signed int (msr in 64-bit mode) is performed.
332 asmlinkage long compat_sys_readlink(const char __user * path, char __user * buf, u32 bufsiz)
334 return sys_readlink(path, buf, (int)bufsiz);
337 /* Note: it is necessary to treat option as an unsigned int,
338 * with the corresponding cast to a signed int to insure that the
339 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
340 * and the register representation of a signed int (msr in 64-bit mode) is performed.
342 asmlinkage long compat_sys_sched_get_priority_max(u32 policy)
344 return sys_sched_get_priority_max((int)policy);
348 /* Note: it is necessary to treat policy as an unsigned int,
349 * with the corresponding cast to a signed int to insure that the
350 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
351 * and the register representation of a signed int (msr in 64-bit mode) is performed.
353 asmlinkage long compat_sys_sched_get_priority_min(u32 policy)
355 return sys_sched_get_priority_min((int)policy);
359 /* Note: it is necessary to treat pid as an unsigned int,
360 * with the corresponding cast to a signed int to insure that the
361 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
362 * and the register representation of a signed int (msr in 64-bit mode) is performed.
364 asmlinkage long compat_sys_sched_getparam(u32 pid, struct sched_param __user *param)
366 return sys_sched_getparam((int)pid, param);
370 /* Note: it is necessary to treat pid as an unsigned int,
371 * with the corresponding cast to a signed int to insure that the
372 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
373 * and the register representation of a signed int (msr in 64-bit mode) is performed.
375 asmlinkage long compat_sys_sched_getscheduler(u32 pid)
377 return sys_sched_getscheduler((int)pid);
381 /* Note: it is necessary to treat pid as an unsigned int,
382 * with the corresponding cast to a signed int to insure that the
383 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
384 * and the register representation of a signed int (msr in 64-bit mode) is performed.
386 asmlinkage long compat_sys_sched_setparam(u32 pid, struct sched_param __user *param)
388 return sys_sched_setparam((int)pid, param);
392 /* Note: it is necessary to treat pid and policy as unsigned ints,
393 * with the corresponding cast to a signed int to insure that the
394 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
395 * and the register representation of a signed int (msr in 64-bit mode) is performed.
397 asmlinkage long compat_sys_sched_setscheduler(u32 pid, u32 policy, struct sched_param __user *param)
399 return sys_sched_setscheduler((int)pid, (int)policy, param);
403 /* Note: it is necessary to treat len as an unsigned int,
404 * with the corresponding cast to a signed int to insure that the
405 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
406 * and the register representation of a signed int (msr in 64-bit mode) is performed.
408 asmlinkage long compat_sys_setdomainname(char __user *name, u32 len)
410 return sys_setdomainname(name, (int)len);
414 /* Note: it is necessary to treat gidsetsize as an unsigned int,
415 * with the corresponding cast to a signed int to insure that the
416 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
417 * and the register representation of a signed int (msr in 64-bit mode) is performed.
419 asmlinkage long compat_sys_setgroups(u32 gidsetsize, gid_t __user *grouplist)
421 return sys_setgroups((int)gidsetsize, grouplist);
425 asmlinkage long compat_sys_sethostname(char __user *name, u32 len)
427 /* sign extend len */
428 return sys_sethostname(name, (int)len);
432 /* Note: it is necessary to treat pid and pgid as unsigned ints,
433 * with the corresponding cast to a signed int to insure that the
434 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
435 * and the register representation of a signed int (msr in 64-bit mode) is performed.
437 asmlinkage long compat_sys_setpgid(u32 pid, u32 pgid)
439 return sys_setpgid((int)pid, (int)pgid);
442 long compat_sys_getpriority(u32 which, u32 who)
444 /* sign extend which and who */
445 return sys_getpriority((int)which, (int)who);
448 long compat_sys_setpriority(u32 which, u32 who, u32 niceval)
450 /* sign extend which, who and niceval */
451 return sys_setpriority((int)which, (int)who, (int)niceval);
454 long compat_sys_ioprio_get(u32 which, u32 who)
456 /* sign extend which and who */
457 return sys_ioprio_get((int)which, (int)who);
460 long compat_sys_ioprio_set(u32 which, u32 who, u32 ioprio)
462 /* sign extend which, who and ioprio */
463 return sys_ioprio_set((int)which, (int)who, (int)ioprio);
466 /* Note: it is necessary to treat newmask as an unsigned int,
467 * with the corresponding cast to a signed int to insure that the
468 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
469 * and the register representation of a signed int (msr in 64-bit mode) is performed.
471 asmlinkage long compat_sys_ssetmask(u32 newmask)
473 return sys_ssetmask((int) newmask);
476 asmlinkage long compat_sys_syslog(u32 type, char __user * buf, u32 len)
478 /* sign extend len */
479 return sys_syslog(type, buf, (int)len);
483 /* Note: it is necessary to treat mask as an unsigned int,
484 * with the corresponding cast to a signed int to insure that the
485 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
486 * and the register representation of a signed int (msr in 64-bit mode) is performed.
488 asmlinkage long compat_sys_umask(u32 mask)
490 return sys_umask((int)mask);
493 unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
494 unsigned long prot, unsigned long flags,
495 unsigned long fd, unsigned long pgoff)
497 /* This should remain 12 even if PAGE_SIZE changes */
498 return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
501 long compat_sys_tgkill(u32 tgid, u32 pid, int sig)
503 /* sign extend tgid, pid */
504 return sys_tgkill((int)tgid, (int)pid, sig);
509 * The 32 bit ABI passes long longs in an odd even register pair.
512 compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
513 u32 reg6, u32 poshi, u32 poslo)
515 return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
518 compat_ssize_t compat_sys_pwrite64(unsigned int fd, const char __user *ubuf, compat_size_t count,
519 u32 reg6, u32 poshi, u32 poslo)
521 return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
524 compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
526 return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
529 asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,
530 unsigned long high, unsigned long low)
532 return sys_truncate(path, (high << 32) | low);
535 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
536 u32 lenhi, u32 lenlo)
538 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
539 ((loff_t)lenhi << 32) | lenlo);
542 asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
545 return sys_ftruncate(fd, (high << 32) | low);
548 long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
551 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
555 long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
556 size_t len, int advice)
558 return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len,
562 asmlinkage long compat_sys_add_key(const char __user *_type,
563 const char __user *_description,
564 const void __user *_payload,
568 return sys_add_key(_type, _description, _payload, plen, ringid);
571 asmlinkage long compat_sys_request_key(const char __user *_type,
572 const char __user *_description,
573 const char __user *_callout_info,
576 return sys_request_key(_type, _description, _callout_info, destringid);
579 asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags,
580 unsigned offset_hi, unsigned offset_lo,
581 unsigned nbytes_hi, unsigned nbytes_lo)
583 loff_t offset = ((loff_t)offset_hi << 32) | offset_lo;
584 loff_t nbytes = ((loff_t)nbytes_hi << 32) | nbytes_lo;
586 return sys_sync_file_range(fd, offset, nbytes, flags);
589 asmlinkage long compat_sys_fanotify_mark(int fanotify_fd, unsigned int flags,
590 unsigned mask_hi, unsigned mask_lo,
591 int dfd, const char __user *pathname)
593 u64 mask = ((u64)mask_hi << 32) | mask_lo;
594 return sys_fanotify_mark(fanotify_fd, flags, mask, dfd, pathname);