?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
OMAP3: PM: Ensure MUSB block can idle when driver not loaded
[linux-ginger.git] / arch / alpha / kernel / osf_sys.c
blob42ee05981e7173d39ac6e047dabce5b46075669b
1 /*
2 * linux/arch/alpha/kernel/osf_sys.c
3 *
4 * Copyright (C) 1995 Linus Torvalds
5 */
6
7 /*
8 * This file handles some of the stranger OSF/1 system call interfaces.
9 * Some of the system calls expect a non-C calling standard, others have
10 * special parameter blocks..
11 */
12
13 #include <linux/errno.h>
14 #include <linux/sched.h>
15 #include <linux/kernel.h>
16 #include <linux/mm.h>
17 #include <linux/smp.h>
18 #include <linux/smp_lock.h>
19 #include <linux/stddef.h>
20 #include <linux/syscalls.h>
21 #include <linux/unistd.h>
22 #include <linux/ptrace.h>
23 #include <linux/slab.h>
24 #include <linux/user.h>
25 #include <linux/utsname.h>
26 #include <linux/time.h>
27 #include <linux/timex.h>
28 #include <linux/major.h>
29 #include <linux/stat.h>
30 #include <linux/mman.h>
31 #include <linux/shm.h>
32 #include <linux/poll.h>
33 #include <linux/file.h>
34 #include <linux/types.h>
35 #include <linux/ipc.h>
36 #include <linux/namei.h>
37 #include <linux/uio.h>
38 #include <linux/vfs.h>
39 #include <linux/rcupdate.h>
40
41 #include <asm/fpu.h>
42 #include <asm/io.h>
43 #include <asm/uaccess.h>
44 #include <asm/system.h>
45 #include <asm/sysinfo.h>
46 #include <asm/hwrpb.h>
47 #include <asm/processor.h>
48
49 /*
50 * Brk needs to return an error. Still support Linux's brk(0) query idiom,
51 * which OSF programs just shouldn't be doing. We're still not quite
52 * identical to OSF as we don't return 0 on success, but doing otherwise
53 * would require changes to libc. Hopefully this is good enough.
54 */
55 SYSCALL_DEFINE1(osf_brk, unsigned long, brk)
56 {
57 unsigned long retval = sys_brk(brk);
58 if (brk && brk != retval)
59 retval = -ENOMEM;
60 return retval;
61 }
62
63 /*
64 * This is pure guess-work..
65 */
66 SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start,
67 unsigned long, text_len, unsigned long, bss_start,
68 unsigned long, bss_len)
69 {
70 struct mm_struct *mm;
71
72 lock_kernel();
73 mm = current->mm;
74 mm->end_code = bss_start + bss_len;
75 mm->start_brk = bss_start + bss_len;
76 mm->brk = bss_start + bss_len;
77 #if 0
78 printk("set_program_attributes(%lx %lx %lx %lx)\n",
79 text_start, text_len, bss_start, bss_len);
80 #endif
81 unlock_kernel();
82 return 0;
83 }
84
85 /*
86 * OSF/1 directory handling functions...
87 *
88 * The "getdents()" interface is much more sane: the "basep" stuff is
89 * braindamage (it can't really handle filesystems where the directory
90 * offset differences aren't the same as "d_reclen").
91 */
92 #define NAME_OFFSET offsetof (struct osf_dirent, d_name)
93
94 struct osf_dirent {
95 unsigned int d_ino;
96 unsigned short d_reclen;
97 unsigned short d_namlen;
98 char d_name[1];
99 };
100
101 struct osf_dirent_callback {
102 struct osf_dirent __user *dirent;
103 long __user *basep;
104 unsigned int count;
105 int error;
106 };
107
108 static int
109 osf_filldir(void *__buf, const char *name, int namlen, loff_t offset,
110 u64 ino, unsigned int d_type)
111 {
112 struct osf_dirent __user *dirent;
113 struct osf_dirent_callback *buf = (struct osf_dirent_callback *) __buf;
114 unsigned int reclen = ALIGN(NAME_OFFSET + namlen + 1, sizeof(u32));
115 unsigned int d_ino;
116
117 buf->error = -EINVAL; /* only used if we fail */
118 if (reclen > buf->count)
119 return -EINVAL;
120 d_ino = ino;
121 if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
122 buf->error = -EOVERFLOW;
123 return -EOVERFLOW;
124 }
125 if (buf->basep) {
126 if (put_user(offset, buf->basep))
127 goto Efault;
128 buf->basep = NULL;
129 }
130 dirent = buf->dirent;
131 if (put_user(d_ino, &dirent->d_ino) ||
132 put_user(namlen, &dirent->d_namlen) ||
133 put_user(reclen, &dirent->d_reclen) ||
134 copy_to_user(dirent->d_name, name, namlen) ||
135 put_user(0, dirent->d_name + namlen))
136 goto Efault;
137 dirent = (void __user *)dirent + reclen;
138 buf->dirent = dirent;
139 buf->count -= reclen;
140 return 0;
141 Efault:
142 buf->error = -EFAULT;
143 return -EFAULT;
144 }
145
146 SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd,
147 struct osf_dirent __user *, dirent, unsigned int, count,
148 long __user *, basep)
149 {
150 int error;
151 struct file *file;
152 struct osf_dirent_callback buf;
153
154 error = -EBADF;
155 file = fget(fd);
156 if (!file)
157 goto out;
158
159 buf.dirent = dirent;
160 buf.basep = basep;
161 buf.count = count;
162 buf.error = 0;
163
164 error = vfs_readdir(file, osf_filldir, &buf);
165 if (error >= 0)
166 error = buf.error;
167 if (count != buf.count)
168 error = count - buf.count;
169
170 fput(file);
171 out:
172 return error;
173 }
174
175 #undef NAME_OFFSET
176
177 SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len,
178 unsigned long, prot, unsigned long, flags, unsigned long, fd,
179 unsigned long, off)
180 {
181 struct file *file = NULL;
182 unsigned long ret = -EBADF;
183
184 #if 0
185 if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED))
186 printk("%s: unimplemented OSF mmap flags %04lx\n",
187 current->comm, flags);
188 #endif
189 if (!(flags & MAP_ANONYMOUS)) {
190 file = fget(fd);
191 if (!file)
192 goto out;
193 }
194 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
195 down_write(&current->mm->mmap_sem);
196 ret = do_mmap(file, addr, len, prot, flags, off);
197 up_write(&current->mm->mmap_sem);
198 if (file)
199 fput(file);
200 out:
201 return ret;
202 }
203
204
205 /*
206 * The OSF/1 statfs structure is much larger, but this should
207 * match the beginning, at least.
208 */
209 struct osf_statfs {
210 short f_type;
211 short f_flags;
212 int f_fsize;
213 int f_bsize;
214 int f_blocks;
215 int f_bfree;
216 int f_bavail;
217 int f_files;
218 int f_ffree;
219 __kernel_fsid_t f_fsid;
220 };
221
222 static int
223 linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat,
224 unsigned long bufsiz)
225 {
226 struct osf_statfs tmp_stat;
227
228 tmp_stat.f_type = linux_stat->f_type;
229 tmp_stat.f_flags = 0; /* mount flags */
230 tmp_stat.f_fsize = linux_stat->f_frsize;
231 tmp_stat.f_bsize = linux_stat->f_bsize;
232 tmp_stat.f_blocks = linux_stat->f_blocks;
233 tmp_stat.f_bfree = linux_stat->f_bfree;
234 tmp_stat.f_bavail = linux_stat->f_bavail;
235 tmp_stat.f_files = linux_stat->f_files;
236 tmp_stat.f_ffree = linux_stat->f_ffree;
237 tmp_stat.f_fsid = linux_stat->f_fsid;
238 if (bufsiz > sizeof(tmp_stat))
239 bufsiz = sizeof(tmp_stat);
240 return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0;
241 }
242
243 static int
244 do_osf_statfs(struct dentry * dentry, struct osf_statfs __user *buffer,
245 unsigned long bufsiz)
246 {
247 struct kstatfs linux_stat;
248 int error = vfs_statfs(dentry, &linux_stat);
249 if (!error)
250 error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz);
251 return error;
252 }
253
254 SYSCALL_DEFINE3(osf_statfs, char __user *, pathname,
255 struct osf_statfs __user *, buffer, unsigned long, bufsiz)
256 {
257 struct path path;
258 int retval;
259
260 retval = user_path(pathname, &path);
261 if (!retval) {
262 retval = do_osf_statfs(path.dentry, buffer, bufsiz);
263 path_put(&path);
264 }
265 return retval;
266 }
267
268 SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd,
269 struct osf_statfs __user *, buffer, unsigned long, bufsiz)
270 {
271 struct file *file;
272 int retval;
273
274 retval = -EBADF;
275 file = fget(fd);
276 if (file) {
277 retval = do_osf_statfs(file->f_path.dentry, buffer, bufsiz);
278 fput(file);
279 }
280 return retval;
281 }
282
283 /*
284 * Uhh.. OSF/1 mount parameters aren't exactly obvious..
285 *
286 * Although to be frank, neither are the native Linux/i386 ones..
287 */
288 struct ufs_args {
289 char __user *devname;
290 int flags;
291 uid_t exroot;
292 };
293
294 struct cdfs_args {
295 char __user *devname;
296 int flags;
297 uid_t exroot;
298
299 /* This has lots more here, which Linux handles with the option block
300 but I'm too lazy to do the translation into ASCII. */
301 };
302
303 struct procfs_args {
304 char __user *devname;
305 int flags;
306 uid_t exroot;
307 };
308
309 /*
310 * We can't actually handle ufs yet, so we translate UFS mounts to
311 * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS
312 * layout is so braindead it's a major headache doing it.
313 *
314 * Just how long ago was it written? OTOH our UFS driver may be still
315 * unhappy with OSF UFS. [CHECKME]
316 */
317 static int
318 osf_ufs_mount(char *dirname, struct ufs_args __user *args, int flags)
319 {
320 int retval;
321 struct cdfs_args tmp;
322 char *devname;
323
324 retval = -EFAULT;
325 if (copy_from_user(&tmp, args, sizeof(tmp)))
326 goto out;
327 devname = getname(tmp.devname);
328 retval = PTR_ERR(devname);
329 if (IS_ERR(devname))
330 goto out;
331 retval = do_mount(devname, dirname, "ext2", flags, NULL);
332 putname(devname);
333 out:
334 return retval;
335 }
336
337 static int
338 osf_cdfs_mount(char *dirname, struct cdfs_args __user *args, int flags)
339 {
340 int retval;
341 struct cdfs_args tmp;
342 char *devname;
343
344 retval = -EFAULT;
345 if (copy_from_user(&tmp, args, sizeof(tmp)))
346 goto out;
347 devname = getname(tmp.devname);
348 retval = PTR_ERR(devname);
349 if (IS_ERR(devname))
350 goto out;
351 retval = do_mount(devname, dirname, "iso9660", flags, NULL);
352 putname(devname);
353 out:
354 return retval;
355 }
356
357 static int
358 osf_procfs_mount(char *dirname, struct procfs_args __user *args, int flags)
359 {
360 struct procfs_args tmp;
361
362 if (copy_from_user(&tmp, args, sizeof(tmp)))
363 return -EFAULT;
364
365 return do_mount("", dirname, "proc", flags, NULL);
366 }
367
368 SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, char __user *, path,
369 int, flag, void __user *, data)
370 {
371 int retval = -EINVAL;
372 char *name;
373
374 lock_kernel();
375
376 name = getname(path);
377 retval = PTR_ERR(name);
378 if (IS_ERR(name))
379 goto out;
380 switch (typenr) {
381 case 1:
382 retval = osf_ufs_mount(name, data, flag);
383 break;
384 case 6:
385 retval = osf_cdfs_mount(name, data, flag);
386 break;
387 case 9:
388 retval = osf_procfs_mount(name, data, flag);
389 break;
390 default:
391 printk("osf_mount(%ld, %x)\n", typenr, flag);
392 }
393 putname(name);
394 out:
395 unlock_kernel();
396 return retval;
397 }
398
399 SYSCALL_DEFINE1(osf_utsname, char __user *, name)
400 {
401 int error;
402
403 down_read(&uts_sem);
404 error = -EFAULT;
405 if (copy_to_user(name + 0, utsname()->sysname, 32))
406 goto out;
407 if (copy_to_user(name + 32, utsname()->nodename, 32))
408 goto out;
409 if (copy_to_user(name + 64, utsname()->release, 32))
410 goto out;
411 if (copy_to_user(name + 96, utsname()->version, 32))
412 goto out;
413 if (copy_to_user(name + 128, utsname()->machine, 32))
414 goto out;
415
416 error = 0;
417 out:
418 up_read(&uts_sem);
419 return error;
420 }
421
422 SYSCALL_DEFINE0(getpagesize)
423 {
424 return PAGE_SIZE;
425 }
426
427 SYSCALL_DEFINE0(getdtablesize)
428 {
429 return sysctl_nr_open;
430 }
431
432 /*
433 * For compatibility with OSF/1 only. Use utsname(2) instead.
434 */
435 SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen)
436 {
437 unsigned len;
438 int i;
439
440 if (!access_ok(VERIFY_WRITE, name, namelen))
441 return -EFAULT;
442
443 len = namelen;
444 if (namelen > 32)
445 len = 32;
446
447 down_read(&uts_sem);
448 for (i = 0; i < len; ++i) {
449 __put_user(utsname()->domainname[i], name + i);
450 if (utsname()->domainname[i] == '\0')
451 break;
452 }
453 up_read(&uts_sem);
454
455 return 0;
456 }
457
458 /*
459 * The following stuff should move into a header file should it ever
460 * be labeled "officially supported." Right now, there is just enough
461 * support to avoid applications (such as tar) printing error
462 * messages. The attributes are not really implemented.
463 */
464
465 /*
466 * Values for Property list entry flag
467 */
468 #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry
469 by default */
470 #define PLE_FLAG_MASK 0x1 /* Valid flag values */
471 #define PLE_FLAG_ALL -1 /* All flag value */
472
473 struct proplistname_args {
474 unsigned int pl_mask;
475 unsigned int pl_numnames;
476 char **pl_names;
477 };
478
479 union pl_args {
480 struct setargs {
481 char __user *path;
482 long follow;
483 long nbytes;
484 char __user *buf;
485 } set;
486 struct fsetargs {
487 long fd;
488 long nbytes;
489 char __user *buf;
490 } fset;
491 struct getargs {
492 char __user *path;
493 long follow;
494 struct proplistname_args __user *name_args;
495 long nbytes;
496 char __user *buf;
497 int __user *min_buf_size;
498 } get;
499 struct fgetargs {
500 long fd;
501 struct proplistname_args __user *name_args;
502 long nbytes;
503 char __user *buf;
504 int __user *min_buf_size;
505 } fget;
506 struct delargs {
507 char __user *path;
508 long follow;
509 struct proplistname_args __user *name_args;
510 } del;
511 struct fdelargs {
512 long fd;
513 struct proplistname_args __user *name_args;
514 } fdel;
515 };
516
517 enum pl_code {
518 PL_SET = 1, PL_FSET = 2,
519 PL_GET = 3, PL_FGET = 4,
520 PL_DEL = 5, PL_FDEL = 6
521 };
522
523 SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code,
524 union pl_args __user *, args)
525 {
526 long error;
527 int __user *min_buf_size_ptr;
528
529 lock_kernel();
530 switch (code) {
531 case PL_SET:
532 if (get_user(error, &args->set.nbytes))
533 error = -EFAULT;
534 break;
535 case PL_FSET:
536 if (get_user(error, &args->fset.nbytes))
537 error = -EFAULT;
538 break;
539 case PL_GET:
540 error = get_user(min_buf_size_ptr, &args->get.min_buf_size);
541 if (error)
542 break;
543 error = put_user(0, min_buf_size_ptr);
544 break;
545 case PL_FGET:
546 error = get_user(min_buf_size_ptr, &args->fget.min_buf_size);
547 if (error)
548 break;
549 error = put_user(0, min_buf_size_ptr);
550 break;
551 case PL_DEL:
552 case PL_FDEL:
553 error = 0;
554 break;
555 default:
556 error = -EOPNOTSUPP;
557 break;
558 };
559 unlock_kernel();
560 return error;
561 }
562
563 SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss,
564 struct sigstack __user *, uoss)
565 {
566 unsigned long usp = rdusp();
567 unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size;
568 unsigned long oss_os = on_sig_stack(usp);
569 int error;
570
571 if (uss) {
572 void __user *ss_sp;
573
574 error = -EFAULT;
575 if (get_user(ss_sp, &uss->ss_sp))
576 goto out;
577
578 /* If the current stack was set with sigaltstack, don't
579 swap stacks while we are on it. */
580 error = -EPERM;
581 if (current->sas_ss_sp && on_sig_stack(usp))
582 goto out;
583
584 /* Since we don't know the extent of the stack, and we don't
585 track onstack-ness, but rather calculate it, we must
586 presume a size. Ho hum this interface is lossy. */
587 current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ;
588 current->sas_ss_size = SIGSTKSZ;
589 }
590
591 if (uoss) {
592 error = -EFAULT;
593 if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss))
594 || __put_user(oss_sp, &uoss->ss_sp)
595 || __put_user(oss_os, &uoss->ss_onstack))
596 goto out;
597 }
598
599 error = 0;
600 out:
601 return error;
602 }
603
604 SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count)
605 {
606 char *sysinfo_table[] = {
607 utsname()->sysname,
608 utsname()->nodename,
609 utsname()->release,
610 utsname()->version,
611 utsname()->machine,
612 "alpha", /* instruction set architecture */
613 "dummy", /* hardware serial number */
614 "dummy", /* hardware manufacturer */
615 "dummy", /* secure RPC domain */
616 };
617 unsigned long offset;
618 char *res;
619 long len, err = -EINVAL;
620
621 offset = command-1;
622 if (offset >= ARRAY_SIZE(sysinfo_table)) {
623 /* Digital UNIX has a few unpublished interfaces here */
624 printk("sysinfo(%d)", command);
625 goto out;
626 }
627
628 down_read(&uts_sem);
629 res = sysinfo_table[offset];
630 len = strlen(res)+1;
631 if (len > count)
632 len = count;
633 if (copy_to_user(buf, res, len))
634 err = -EFAULT;
635 else
636 err = 0;
637 up_read(&uts_sem);
638 out:
639 return err;
640 }
641
642 SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer,
643 unsigned long, nbytes, int __user *, start, void __user *, arg)
644 {
645 unsigned long w;
646 struct percpu_struct *cpu;
647
648 switch (op) {
649 case GSI_IEEE_FP_CONTROL:
650 /* Return current software fp control & status bits. */
651 /* Note that DU doesn't verify available space here. */
652
653 w = current_thread_info()->ieee_state & IEEE_SW_MASK;
654 w = swcr_update_status(w, rdfpcr());
655 if (put_user(w, (unsigned long __user *) buffer))
656 return -EFAULT;
657 return 0;
658
659 case GSI_IEEE_STATE_AT_SIGNAL:
660 /*
661 * Not sure anybody will ever use this weird stuff. These
662 * ops can be used (under OSF/1) to set the fpcr that should
663 * be used when a signal handler starts executing.
664 */
665 break;
666
667 case GSI_UACPROC:
668 if (nbytes < sizeof(unsigned int))
669 return -EINVAL;
670 w = (current_thread_info()->flags >> UAC_SHIFT) & UAC_BITMASK;
671 if (put_user(w, (unsigned int __user *)buffer))
672 return -EFAULT;
673 return 1;
674
675 case GSI_PROC_TYPE:
676 if (nbytes < sizeof(unsigned long))
677 return -EINVAL;
678 cpu = (struct percpu_struct*)
679 ((char*)hwrpb + hwrpb->processor_offset);
680 w = cpu->type;
681 if (put_user(w, (unsigned long __user*)buffer))
682 return -EFAULT;
683 return 1;
684
685 case GSI_GET_HWRPB:
686 if (nbytes < sizeof(*hwrpb))
687 return -EINVAL;
688 if (copy_to_user(buffer, hwrpb, nbytes) != 0)
689 return -EFAULT;
690 return 1;
691
692 default:
693 break;
694 }
695
696 return -EOPNOTSUPP;
697 }
698
699 SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer,
700 unsigned long, nbytes, int __user *, start, void __user *, arg)
701 {
702 switch (op) {
703 case SSI_IEEE_FP_CONTROL: {
704 unsigned long swcr, fpcr;
705 unsigned int *state;
706
707 /*
708 * Alpha Architecture Handbook 4.7.7.3:
709 * To be fully IEEE compiant, we must track the current IEEE
710 * exception state in software, because spurious bits can be
711 * set in the trap shadow of a software-complete insn.
712 */
713
714 if (get_user(swcr, (unsigned long __user *)buffer))
715 return -EFAULT;
716 state = &current_thread_info()->ieee_state;
717
718 /* Update softare trap enable bits. */
719 *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK);
720
721 /* Update the real fpcr. */
722 fpcr = rdfpcr() & FPCR_DYN_MASK;
723 fpcr |= ieee_swcr_to_fpcr(swcr);
724 wrfpcr(fpcr);
725
726 return 0;
727 }
728
729 case SSI_IEEE_RAISE_EXCEPTION: {
730 unsigned long exc, swcr, fpcr, fex;
731 unsigned int *state;
732
733 if (get_user(exc, (unsigned long __user *)buffer))
734 return -EFAULT;
735 state = &current_thread_info()->ieee_state;
736 exc &= IEEE_STATUS_MASK;
737
738 /* Update softare trap enable bits. */
739 swcr = (*state & IEEE_SW_MASK) | exc;
740 *state |= exc;
741
742 /* Update the real fpcr. */
743 fpcr = rdfpcr();
744 fpcr |= ieee_swcr_to_fpcr(swcr);
745 wrfpcr(fpcr);
746
747 /* If any exceptions set by this call, and are unmasked,
748 send a signal. Old exceptions are not signaled. */
749 fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr;
750 if (fex) {
751 siginfo_t info;
752 int si_code = 0;
753
754 if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND;
755 if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES;
756 if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND;
757 if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF;
758 if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV;
759 if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV;
760
761 info.si_signo = SIGFPE;
762 info.si_errno = 0;
763 info.si_code = si_code;
764 info.si_addr = NULL; /* FIXME */
765 send_sig_info(SIGFPE, &info, current);
766 }
767 return 0;
768 }
769
770 case SSI_IEEE_STATE_AT_SIGNAL:
771 case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
772 /*
773 * Not sure anybody will ever use this weird stuff. These
774 * ops can be used (under OSF/1) to set the fpcr that should
775 * be used when a signal handler starts executing.
776 */
777 break;
778
779 case SSI_NVPAIRS: {
780 unsigned long v, w, i;
781 unsigned int old, new;
782
783 for (i = 0; i < nbytes; ++i) {
784
785 if (get_user(v, 2*i + (unsigned int __user *)buffer))
786 return -EFAULT;
787 if (get_user(w, 2*i + 1 + (unsigned int __user *)buffer))
788 return -EFAULT;
789 switch (v) {
790 case SSIN_UACPROC:
791 again:
792 old = current_thread_info()->flags;
793 new = old & ~(UAC_BITMASK << UAC_SHIFT);
794 new = new | (w & UAC_BITMASK) << UAC_SHIFT;
795 if (cmpxchg(&current_thread_info()->flags,
796 old, new) != old)
797 goto again;
798 break;
799
800 default:
801 return -EOPNOTSUPP;
802 }
803 }
804 return 0;
805 }
806
807 default:
808 break;
809 }
810
811 return -EOPNOTSUPP;
812 }
813
814 /* Translations due to the fact that OSF's time_t is an int. Which
815 affects all sorts of things, like timeval and itimerval. */
816
817 extern struct timezone sys_tz;
818
819 struct timeval32
820 {
821 int tv_sec, tv_usec;
822 };
823
824 struct itimerval32
825 {
826 struct timeval32 it_interval;
827 struct timeval32 it_value;
828 };
829
830 static inline long
831 get_tv32(struct timeval *o, struct timeval32 __user *i)
832 {
833 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
834 (__get_user(o->tv_sec, &i->tv_sec) |
835 __get_user(o->tv_usec, &i->tv_usec)));
836 }
837
838 static inline long
839 put_tv32(struct timeval32 __user *o, struct timeval *i)
840 {
841 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
842 (__put_user(i->tv_sec, &o->tv_sec) |
843 __put_user(i->tv_usec, &o->tv_usec)));
844 }
845
846 static inline long
847 get_it32(struct itimerval *o, struct itimerval32 __user *i)
848 {
849 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
850 (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) |
851 __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) |
852 __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) |
853 __get_user(o->it_value.tv_usec, &i->it_value.tv_usec)));
854 }
855
856 static inline long
857 put_it32(struct itimerval32 __user *o, struct itimerval *i)
858 {
859 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
860 (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) |
861 __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) |
862 __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) |
863 __put_user(i->it_value.tv_usec, &o->it_value.tv_usec)));
864 }
865
866 static inline void
867 jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value)
868 {
869 value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
870 value->tv_sec = jiffies / HZ;
871 }
872
873 SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv,
874 struct timezone __user *, tz)
875 {
876 if (tv) {
877 struct timeval ktv;
878 do_gettimeofday(&ktv);
879 if (put_tv32(tv, &ktv))
880 return -EFAULT;
881 }
882 if (tz) {
883 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
884 return -EFAULT;
885 }
886 return 0;
887 }
888
889 SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
890 struct timezone __user *, tz)
891 {
892 struct timespec kts;
893 struct timezone ktz;
894
895 if (tv) {
896 if (get_tv32((struct timeval *)&kts, tv))
897 return -EFAULT;
898 }
899 if (tz) {
900 if (copy_from_user(&ktz, tz, sizeof(*tz)))
901 return -EFAULT;
902 }
903
904 kts.tv_nsec *= 1000;
905
906 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
907 }
908
909 SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it)
910 {
911 struct itimerval kit;
912 int error;
913
914 error = do_getitimer(which, &kit);
915 if (!error && put_it32(it, &kit))
916 error = -EFAULT;
917
918 return error;
919 }
920
921 SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in,
922 struct itimerval32 __user *, out)
923 {
924 struct itimerval kin, kout;
925 int error;
926
927 if (in) {
928 if (get_it32(&kin, in))
929 return -EFAULT;
930 } else
931 memset(&kin, 0, sizeof(kin));
932
933 error = do_setitimer(which, &kin, out ? &kout : NULL);
934 if (error || !out)
935 return error;
936
937 if (put_it32(out, &kout))
938 return -EFAULT;
939
940 return 0;
941
942 }
943
944 SYSCALL_DEFINE2(osf_utimes, char __user *, filename,
945 struct timeval32 __user *, tvs)
946 {
947 struct timespec tv[2];
948
949 if (tvs) {
950 struct timeval ktvs[2];
951 if (get_tv32(&ktvs[0], &tvs[0]) ||
952 get_tv32(&ktvs[1], &tvs[1]))
953 return -EFAULT;
954
955 if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 ||
956 ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000)
957 return -EINVAL;
958
959 tv[0].tv_sec = ktvs[0].tv_sec;
960 tv[0].tv_nsec = 1000 * ktvs[0].tv_usec;
961 tv[1].tv_sec = ktvs[1].tv_sec;
962 tv[1].tv_nsec = 1000 * ktvs[1].tv_usec;
963 }
964
965 return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0);
966 }
967
968 #define MAX_SELECT_SECONDS \
969 ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
970
971 SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp,
972 fd_set __user *, exp, struct timeval32 __user *, tvp)
973 {
974 struct timespec end_time, *to = NULL;
975 if (tvp) {
976 time_t sec, usec;
977
978 to = &end_time;
979
980 if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp))
981 || __get_user(sec, &tvp->tv_sec)
982 || __get_user(usec, &tvp->tv_usec)) {
983 return -EFAULT;
984 }
985
986 if (sec < 0 || usec < 0)
987 return -EINVAL;
988
989 if (poll_select_set_timeout(to, sec, usec * NSEC_PER_USEC))
990 return -EINVAL;
991
992 }
993
994 /* OSF does not copy back the remaining time. */
995 return core_sys_select(n, inp, outp, exp, to);
996 }
997
998 struct rusage32 {
999 struct timeval32 ru_utime; /* user time used */
1000 struct timeval32 ru_stime; /* system time used */
1001 long ru_maxrss; /* maximum resident set size */
1002 long ru_ixrss; /* integral shared memory size */
1003 long ru_idrss; /* integral unshared data size */
1004 long ru_isrss; /* integral unshared stack size */
1005 long ru_minflt; /* page reclaims */
1006 long ru_majflt; /* page faults */
1007 long ru_nswap; /* swaps */
1008 long ru_inblock; /* block input operations */
1009 long ru_oublock; /* block output operations */
1010 long ru_msgsnd; /* messages sent */
1011 long ru_msgrcv; /* messages received */
1012 long ru_nsignals; /* signals received */
1013 long ru_nvcsw; /* voluntary context switches */
1014 long ru_nivcsw; /* involuntary " */
1015 };
1016
1017 SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru)
1018 {
1019 struct rusage32 r;
1020
1021 if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN)
1022 return -EINVAL;
1023
1024 memset(&r, 0, sizeof(r));
1025 switch (who) {
1026 case RUSAGE_SELF:
1027 jiffies_to_timeval32(current->utime, &r.ru_utime);
1028 jiffies_to_timeval32(current->stime, &r.ru_stime);
1029 r.ru_minflt = current->min_flt;
1030 r.ru_majflt = current->maj_flt;
1031 break;
1032 case RUSAGE_CHILDREN:
1033 jiffies_to_timeval32(current->signal->cutime, &r.ru_utime);
1034 jiffies_to_timeval32(current->signal->cstime, &r.ru_stime);
1035 r.ru_minflt = current->signal->cmin_flt;
1036 r.ru_majflt = current->signal->cmaj_flt;
1037 break;
1038 }
1039
1040 return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0;
1041 }
1042
1043 SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options,
1044 struct rusage32 __user *, ur)
1045 {
1046 struct rusage r;
1047 long ret, err;
1048 mm_segment_t old_fs;
1049
1050 if (!ur)
1051 return sys_wait4(pid, ustatus, options, NULL);
1052
1053 old_fs = get_fs();
1054
1055 set_fs (KERNEL_DS);
1056 ret = sys_wait4(pid, ustatus, options, (struct rusage __user *) &r);
1057 set_fs (old_fs);
1058
1059 if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur)))
1060 return -EFAULT;
1061
1062 err = 0;
1063 err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec);
1064 err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec);
1065 err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec);
1066 err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec);
1067 err |= __put_user(r.ru_maxrss, &ur->ru_maxrss);
1068 err |= __put_user(r.ru_ixrss, &ur->ru_ixrss);
1069 err |= __put_user(r.ru_idrss, &ur->ru_idrss);
1070 err |= __put_user(r.ru_isrss, &ur->ru_isrss);
1071 err |= __put_user(r.ru_minflt, &ur->ru_minflt);
1072 err |= __put_user(r.ru_majflt, &ur->ru_majflt);
1073 err |= __put_user(r.ru_nswap, &ur->ru_nswap);
1074 err |= __put_user(r.ru_inblock, &ur->ru_inblock);
1075 err |= __put_user(r.ru_oublock, &ur->ru_oublock);
1076 err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd);
1077 err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv);
1078 err |= __put_user(r.ru_nsignals, &ur->ru_nsignals);
1079 err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw);
1080 err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw);
1081
1082 return err ? err : ret;
1083 }
1084
1085 /*
1086 * I don't know what the parameters are: the first one
1087 * seems to be a timeval pointer, and I suspect the second
1088 * one is the time remaining.. Ho humm.. No documentation.
1089 */
1090 SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep,
1091 struct timeval32 __user *, remain)
1092 {
1093 struct timeval tmp;
1094 unsigned long ticks;
1095
1096 if (get_tv32(&tmp, sleep))
1097 goto fault;
1098
1099 ticks = timeval_to_jiffies(&tmp);
1100
1101 ticks = schedule_timeout_interruptible(ticks);
1102
1103 if (remain) {
1104 jiffies_to_timeval(ticks, &tmp);
1105 if (put_tv32(remain, &tmp))
1106 goto fault;
1107 }
1108
1109 return 0;
1110 fault:
1111 return -EFAULT;
1112 }
1113
1114
1115 struct timex32 {
1116 unsigned int modes; /* mode selector */
1117 long offset; /* time offset (usec) */
1118 long freq; /* frequency offset (scaled ppm) */
1119 long maxerror; /* maximum error (usec) */
1120 long esterror; /* estimated error (usec) */
1121 int status; /* clock command/status */
1122 long constant; /* pll time constant */
1123 long precision; /* clock precision (usec) (read only) */
1124 long tolerance; /* clock frequency tolerance (ppm)
1125 * (read only)
1126 */
1127 struct timeval32 time; /* (read only) */
1128 long tick; /* (modified) usecs between clock ticks */
1129
1130 long ppsfreq; /* pps frequency (scaled ppm) (ro) */
1131 long jitter; /* pps jitter (us) (ro) */
1132 int shift; /* interval duration (s) (shift) (ro) */
1133 long stabil; /* pps stability (scaled ppm) (ro) */
1134 long jitcnt; /* jitter limit exceeded (ro) */
1135 long calcnt; /* calibration intervals (ro) */
1136 long errcnt; /* calibration errors (ro) */
1137 long stbcnt; /* stability limit exceeded (ro) */
1138
1139 int :32; int :32; int :32; int :32;
1140 int :32; int :32; int :32; int :32;
1141 int :32; int :32; int :32; int :32;
1142 };
1143
1144 SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p)
1145 {
1146 struct timex txc;
1147 int ret;
1148
1149 /* copy relevant bits of struct timex. */
1150 if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) ||
1151 copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) -
1152 offsetof(struct timex32, time)))
1153 return -EFAULT;
1154
1155 ret = do_adjtimex(&txc);
1156 if (ret < 0)
1157 return ret;
1158
1159 /* copy back to timex32 */
1160 if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) ||
1161 (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) -
1162 offsetof(struct timex32, tick))) ||
1163 (put_tv32(&txc_p->time, &txc.time)))
1164 return -EFAULT;
1165
1166 return ret;
1167 }
1168
1169 /* Get an address range which is currently unmapped. Similar to the
1170 generic version except that we know how to honor ADDR_LIMIT_32BIT. */
1171
1172 static unsigned long
1173 arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
1174 unsigned long limit)
1175 {
1176 struct vm_area_struct *vma = find_vma(current->mm, addr);
1177
1178 while (1) {
1179 /* At this point: (!vma || addr < vma->vm_end). */
1180 if (limit - len < addr)
1181 return -ENOMEM;
1182 if (!vma || addr + len <= vma->vm_start)
1183 return addr;
1184 addr = vma->vm_end;
1185 vma = vma->vm_next;
1186 }
1187 }
1188
1189 unsigned long
1190 arch_get_unmapped_area(struct file *filp, unsigned long addr,
1191 unsigned long len, unsigned long pgoff,
1192 unsigned long flags)
1193 {
1194 unsigned long limit;
1195
1196 /* "32 bit" actually means 31 bit, since pointers sign extend. */
1197 if (current->personality & ADDR_LIMIT_32BIT)
1198 limit = 0x80000000;
1199 else
1200 limit = TASK_SIZE;
1201
1202 if (len > limit)
1203 return -ENOMEM;
1204
1205 if (flags & MAP_FIXED)
1206 return addr;
1207
1208 /* First, see if the given suggestion fits.
1209
1210 The OSF/1 loader (/sbin/loader) relies on us returning an
1211 address larger than the requested if one exists, which is
1212 a terribly broken way to program.
1213
1214 That said, I can see the use in being able to suggest not
1215 merely specific addresses, but regions of memory -- perhaps
1216 this feature should be incorporated into all ports? */
1217
1218 if (addr) {
1219 addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit);
1220 if (addr != (unsigned long) -ENOMEM)
1221 return addr;
1222 }
1223
1224 /* Next, try allocating at TASK_UNMAPPED_BASE. */
1225 addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE),
1226 len, limit);
1227 if (addr != (unsigned long) -ENOMEM)
1228 return addr;
1229
1230 /* Finally, try allocating in low memory. */
1231 addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit);
1232
1233 return addr;
1234 }
1235
1236 #ifdef CONFIG_OSF4_COMPAT
1237
1238 /* Clear top 32 bits of iov_len in the user's buffer for
1239 compatibility with old versions of OSF/1 where iov_len
1240 was defined as int. */
1241 static int
1242 osf_fix_iov_len(const struct iovec __user *iov, unsigned long count)
1243 {
1244 unsigned long i;
1245
1246 for (i = 0 ; i < count ; i++) {
1247 int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1;
1248
1249 if (put_user(0, iov_len_high))
1250 return -EFAULT;
1251 }
1252 return 0;
1253 }
1254
1255 SYSCALL_DEFINE3(osf_readv, unsigned long, fd,
1256 const struct iovec __user *, vector, unsigned long, count)
1257 {
1258 if (unlikely(personality(current->personality) == PER_OSF4))
1259 if (osf_fix_iov_len(vector, count))
1260 return -EFAULT;
1261 return sys_readv(fd, vector, count);
1262 }
1263
1264 SYSCALL_DEFINE3(osf_writev, unsigned long, fd,
1265 const struct iovec __user *, vector, unsigned long, count)
1266 {
1267 if (unlikely(personality(current->personality) == PER_OSF4))
1268 if (osf_fix_iov_len(vector, count))
1269 return -EFAULT;
1270 return sys_writev(fd, vector, count);
1271 }
1272
1273 #endif
Linux for Ginger Game Console