Commit | Line | Data |
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1da177e4 LT |
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/a.out.h> | |
26 | #include <linux/utsname.h> | |
27 | #include <linux/time.h> | |
28 | #include <linux/timex.h> | |
29 | #include <linux/major.h> | |
30 | #include <linux/stat.h> | |
31 | #include <linux/mman.h> | |
32 | #include <linux/shm.h> | |
33 | #include <linux/poll.h> | |
34 | #include <linux/file.h> | |
35 | #include <linux/types.h> | |
36 | #include <linux/ipc.h> | |
37 | #include <linux/namei.h> | |
38 | #include <linux/uio.h> | |
39 | #include <linux/vfs.h> | |
4fb3a538 | 40 | #include <linux/rcupdate.h> |
1da177e4 LT |
41 | |
42 | #include <asm/fpu.h> | |
43 | #include <asm/io.h> | |
44 | #include <asm/uaccess.h> | |
45 | #include <asm/system.h> | |
46 | #include <asm/sysinfo.h> | |
47 | #include <asm/hwrpb.h> | |
48 | #include <asm/processor.h> | |
49 | ||
50 | extern int do_pipe(int *); | |
51 | ||
52 | /* | |
53 | * Brk needs to return an error. Still support Linux's brk(0) query idiom, | |
54 | * which OSF programs just shouldn't be doing. We're still not quite | |
55 | * identical to OSF as we don't return 0 on success, but doing otherwise | |
56 | * would require changes to libc. Hopefully this is good enough. | |
57 | */ | |
58 | asmlinkage unsigned long | |
59 | osf_brk(unsigned long brk) | |
60 | { | |
61 | unsigned long retval = sys_brk(brk); | |
62 | if (brk && brk != retval) | |
63 | retval = -ENOMEM; | |
64 | return retval; | |
65 | } | |
66 | ||
67 | /* | |
68 | * This is pure guess-work.. | |
69 | */ | |
70 | asmlinkage int | |
71 | osf_set_program_attributes(unsigned long text_start, unsigned long text_len, | |
72 | unsigned long bss_start, unsigned long bss_len) | |
73 | { | |
74 | struct mm_struct *mm; | |
75 | ||
76 | lock_kernel(); | |
77 | mm = current->mm; | |
78 | mm->end_code = bss_start + bss_len; | |
79 | mm->brk = bss_start + bss_len; | |
80 | #if 0 | |
81 | printk("set_program_attributes(%lx %lx %lx %lx)\n", | |
82 | text_start, text_len, bss_start, bss_len); | |
83 | #endif | |
84 | unlock_kernel(); | |
85 | return 0; | |
86 | } | |
87 | ||
88 | /* | |
89 | * OSF/1 directory handling functions... | |
90 | * | |
91 | * The "getdents()" interface is much more sane: the "basep" stuff is | |
92 | * braindamage (it can't really handle filesystems where the directory | |
93 | * offset differences aren't the same as "d_reclen"). | |
94 | */ | |
95 | #define NAME_OFFSET offsetof (struct osf_dirent, d_name) | |
96 | #define ROUND_UP(x) (((x)+3) & ~3) | |
97 | ||
98 | struct osf_dirent { | |
99 | unsigned int d_ino; | |
100 | unsigned short d_reclen; | |
101 | unsigned short d_namlen; | |
102 | char d_name[1]; | |
103 | }; | |
104 | ||
105 | struct osf_dirent_callback { | |
106 | struct osf_dirent __user *dirent; | |
107 | long __user *basep; | |
108 | unsigned int count; | |
109 | int error; | |
110 | }; | |
111 | ||
112 | static int | |
113 | osf_filldir(void *__buf, const char *name, int namlen, loff_t offset, | |
afefdbb2 | 114 | u64 ino, unsigned int d_type) |
1da177e4 LT |
115 | { |
116 | struct osf_dirent __user *dirent; | |
117 | struct osf_dirent_callback *buf = (struct osf_dirent_callback *) __buf; | |
118 | unsigned int reclen = ROUND_UP(NAME_OFFSET + namlen + 1); | |
afefdbb2 | 119 | unsigned int d_ino; |
1da177e4 LT |
120 | |
121 | buf->error = -EINVAL; /* only used if we fail */ | |
122 | if (reclen > buf->count) | |
123 | return -EINVAL; | |
afefdbb2 DH |
124 | d_ino = ino; |
125 | if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) | |
126 | return -EOVERFLOW; | |
1da177e4 LT |
127 | if (buf->basep) { |
128 | if (put_user(offset, buf->basep)) | |
129 | return -EFAULT; | |
130 | buf->basep = NULL; | |
131 | } | |
132 | dirent = buf->dirent; | |
afefdbb2 | 133 | put_user(d_ino, &dirent->d_ino); |
1da177e4 LT |
134 | put_user(namlen, &dirent->d_namlen); |
135 | put_user(reclen, &dirent->d_reclen); | |
136 | if (copy_to_user(dirent->d_name, name, namlen) || | |
137 | put_user(0, dirent->d_name + namlen)) | |
138 | return -EFAULT; | |
139 | dirent = (void __user *)dirent + reclen; | |
140 | buf->dirent = dirent; | |
141 | buf->count -= reclen; | |
142 | return 0; | |
143 | } | |
144 | ||
145 | asmlinkage int | |
146 | osf_getdirentries(unsigned int fd, struct osf_dirent __user *dirent, | |
147 | unsigned int count, long __user *basep) | |
148 | { | |
149 | int error; | |
150 | struct file *file; | |
151 | struct osf_dirent_callback buf; | |
152 | ||
153 | error = -EBADF; | |
154 | file = fget(fd); | |
155 | if (!file) | |
156 | goto out; | |
157 | ||
158 | buf.dirent = dirent; | |
159 | buf.basep = basep; | |
160 | buf.count = count; | |
161 | buf.error = 0; | |
162 | ||
163 | error = vfs_readdir(file, osf_filldir, &buf); | |
164 | if (error < 0) | |
165 | goto out_putf; | |
166 | ||
167 | error = buf.error; | |
168 | if (count != buf.count) | |
169 | error = count - buf.count; | |
170 | ||
171 | out_putf: | |
172 | fput(file); | |
173 | out: | |
174 | return error; | |
175 | } | |
176 | ||
177 | #undef ROUND_UP | |
178 | #undef NAME_OFFSET | |
179 | ||
180 | asmlinkage unsigned long | |
181 | osf_mmap(unsigned long addr, unsigned long len, unsigned long prot, | |
182 | unsigned long flags, unsigned long fd, unsigned long off) | |
183 | { | |
184 | struct file *file = NULL; | |
185 | unsigned long ret = -EBADF; | |
186 | ||
187 | #if 0 | |
188 | if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED)) | |
189 | printk("%s: unimplemented OSF mmap flags %04lx\n", | |
190 | current->comm, flags); | |
191 | #endif | |
192 | if (!(flags & MAP_ANONYMOUS)) { | |
193 | file = fget(fd); | |
194 | if (!file) | |
195 | goto out; | |
196 | } | |
197 | flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); | |
198 | down_write(¤t->mm->mmap_sem); | |
199 | ret = do_mmap(file, addr, len, prot, flags, off); | |
200 | up_write(¤t->mm->mmap_sem); | |
201 | if (file) | |
202 | fput(file); | |
203 | out: | |
204 | return ret; | |
205 | } | |
206 | ||
207 | ||
208 | /* | |
209 | * The OSF/1 statfs structure is much larger, but this should | |
210 | * match the beginning, at least. | |
211 | */ | |
212 | struct osf_statfs { | |
213 | short f_type; | |
214 | short f_flags; | |
215 | int f_fsize; | |
216 | int f_bsize; | |
217 | int f_blocks; | |
218 | int f_bfree; | |
219 | int f_bavail; | |
220 | int f_files; | |
221 | int f_ffree; | |
222 | __kernel_fsid_t f_fsid; | |
223 | }; | |
224 | ||
225 | static int | |
226 | linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat, | |
227 | unsigned long bufsiz) | |
228 | { | |
229 | struct osf_statfs tmp_stat; | |
230 | ||
231 | tmp_stat.f_type = linux_stat->f_type; | |
232 | tmp_stat.f_flags = 0; /* mount flags */ | |
233 | tmp_stat.f_fsize = linux_stat->f_frsize; | |
234 | tmp_stat.f_bsize = linux_stat->f_bsize; | |
235 | tmp_stat.f_blocks = linux_stat->f_blocks; | |
236 | tmp_stat.f_bfree = linux_stat->f_bfree; | |
237 | tmp_stat.f_bavail = linux_stat->f_bavail; | |
238 | tmp_stat.f_files = linux_stat->f_files; | |
239 | tmp_stat.f_ffree = linux_stat->f_ffree; | |
240 | tmp_stat.f_fsid = linux_stat->f_fsid; | |
241 | if (bufsiz > sizeof(tmp_stat)) | |
242 | bufsiz = sizeof(tmp_stat); | |
243 | return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; | |
244 | } | |
245 | ||
246 | static int | |
247 | do_osf_statfs(struct dentry * dentry, struct osf_statfs __user *buffer, | |
248 | unsigned long bufsiz) | |
249 | { | |
250 | struct kstatfs linux_stat; | |
726c3342 | 251 | int error = vfs_statfs(dentry, &linux_stat); |
1da177e4 LT |
252 | if (!error) |
253 | error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); | |
254 | return error; | |
255 | } | |
256 | ||
257 | asmlinkage int | |
258 | osf_statfs(char __user *path, struct osf_statfs __user *buffer, unsigned long bufsiz) | |
259 | { | |
260 | struct nameidata nd; | |
261 | int retval; | |
262 | ||
263 | retval = user_path_walk(path, &nd); | |
264 | if (!retval) { | |
265 | retval = do_osf_statfs(nd.dentry, buffer, bufsiz); | |
266 | path_release(&nd); | |
267 | } | |
268 | return retval; | |
269 | } | |
270 | ||
271 | asmlinkage int | |
272 | osf_fstatfs(unsigned long fd, struct osf_statfs __user *buffer, unsigned long bufsiz) | |
273 | { | |
274 | struct file *file; | |
275 | int retval; | |
276 | ||
277 | retval = -EBADF; | |
278 | file = fget(fd); | |
279 | if (file) { | |
8ac0352b | 280 | retval = do_osf_statfs(file->f_path.dentry, buffer, bufsiz); |
1da177e4 LT |
281 | fput(file); |
282 | } | |
283 | return retval; | |
284 | } | |
285 | ||
286 | /* | |
287 | * Uhh.. OSF/1 mount parameters aren't exactly obvious.. | |
288 | * | |
289 | * Although to be frank, neither are the native Linux/i386 ones.. | |
290 | */ | |
291 | struct ufs_args { | |
292 | char __user *devname; | |
293 | int flags; | |
294 | uid_t exroot; | |
295 | }; | |
296 | ||
297 | struct cdfs_args { | |
298 | char __user *devname; | |
299 | int flags; | |
300 | uid_t exroot; | |
301 | ||
302 | /* This has lots more here, which Linux handles with the option block | |
303 | but I'm too lazy to do the translation into ASCII. */ | |
304 | }; | |
305 | ||
306 | struct procfs_args { | |
307 | char __user *devname; | |
308 | int flags; | |
309 | uid_t exroot; | |
310 | }; | |
311 | ||
312 | /* | |
313 | * We can't actually handle ufs yet, so we translate UFS mounts to | |
314 | * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS | |
315 | * layout is so braindead it's a major headache doing it. | |
316 | * | |
317 | * Just how long ago was it written? OTOH our UFS driver may be still | |
318 | * unhappy with OSF UFS. [CHECKME] | |
319 | */ | |
320 | static int | |
321 | osf_ufs_mount(char *dirname, struct ufs_args __user *args, int flags) | |
322 | { | |
323 | int retval; | |
324 | struct cdfs_args tmp; | |
325 | char *devname; | |
326 | ||
327 | retval = -EFAULT; | |
328 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
329 | goto out; | |
330 | devname = getname(tmp.devname); | |
331 | retval = PTR_ERR(devname); | |
332 | if (IS_ERR(devname)) | |
333 | goto out; | |
334 | retval = do_mount(devname, dirname, "ext2", flags, NULL); | |
335 | putname(devname); | |
336 | out: | |
337 | return retval; | |
338 | } | |
339 | ||
340 | static int | |
341 | osf_cdfs_mount(char *dirname, struct cdfs_args __user *args, int flags) | |
342 | { | |
343 | int retval; | |
344 | struct cdfs_args tmp; | |
345 | char *devname; | |
346 | ||
347 | retval = -EFAULT; | |
348 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
349 | goto out; | |
350 | devname = getname(tmp.devname); | |
351 | retval = PTR_ERR(devname); | |
352 | if (IS_ERR(devname)) | |
353 | goto out; | |
354 | retval = do_mount(devname, dirname, "iso9660", flags, NULL); | |
355 | putname(devname); | |
356 | out: | |
357 | return retval; | |
358 | } | |
359 | ||
360 | static int | |
361 | osf_procfs_mount(char *dirname, struct procfs_args __user *args, int flags) | |
362 | { | |
363 | struct procfs_args tmp; | |
364 | ||
365 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
366 | return -EFAULT; | |
367 | ||
368 | return do_mount("", dirname, "proc", flags, NULL); | |
369 | } | |
370 | ||
371 | asmlinkage int | |
372 | osf_mount(unsigned long typenr, char __user *path, int flag, void __user *data) | |
373 | { | |
374 | int retval = -EINVAL; | |
375 | char *name; | |
376 | ||
377 | lock_kernel(); | |
378 | ||
379 | name = getname(path); | |
380 | retval = PTR_ERR(name); | |
381 | if (IS_ERR(name)) | |
382 | goto out; | |
383 | switch (typenr) { | |
384 | case 1: | |
385 | retval = osf_ufs_mount(name, data, flag); | |
386 | break; | |
387 | case 6: | |
388 | retval = osf_cdfs_mount(name, data, flag); | |
389 | break; | |
390 | case 9: | |
391 | retval = osf_procfs_mount(name, data, flag); | |
392 | break; | |
393 | default: | |
394 | printk("osf_mount(%ld, %x)\n", typenr, flag); | |
395 | } | |
396 | putname(name); | |
397 | out: | |
398 | unlock_kernel(); | |
399 | return retval; | |
400 | } | |
401 | ||
402 | asmlinkage int | |
403 | osf_utsname(char __user *name) | |
404 | { | |
405 | int error; | |
406 | ||
407 | down_read(&uts_sem); | |
408 | error = -EFAULT; | |
e9ff3990 | 409 | if (copy_to_user(name + 0, utsname()->sysname, 32)) |
1da177e4 | 410 | goto out; |
e9ff3990 | 411 | if (copy_to_user(name + 32, utsname()->nodename, 32)) |
1da177e4 | 412 | goto out; |
e9ff3990 | 413 | if (copy_to_user(name + 64, utsname()->release, 32)) |
1da177e4 | 414 | goto out; |
e9ff3990 | 415 | if (copy_to_user(name + 96, utsname()->version, 32)) |
1da177e4 | 416 | goto out; |
e9ff3990 | 417 | if (copy_to_user(name + 128, utsname()->machine, 32)) |
1da177e4 LT |
418 | goto out; |
419 | ||
420 | error = 0; | |
421 | out: | |
422 | up_read(&uts_sem); | |
423 | return error; | |
424 | } | |
425 | ||
426 | asmlinkage unsigned long | |
427 | sys_getpagesize(void) | |
428 | { | |
429 | return PAGE_SIZE; | |
430 | } | |
431 | ||
432 | asmlinkage unsigned long | |
433 | sys_getdtablesize(void) | |
434 | { | |
435 | return NR_OPEN; | |
436 | } | |
437 | ||
438 | /* | |
439 | * For compatibility with OSF/1 only. Use utsname(2) instead. | |
440 | */ | |
441 | asmlinkage int | |
442 | osf_getdomainname(char __user *name, int namelen) | |
443 | { | |
444 | unsigned len; | |
445 | int i; | |
446 | ||
447 | if (!access_ok(VERIFY_WRITE, name, namelen)) | |
448 | return -EFAULT; | |
449 | ||
450 | len = namelen; | |
451 | if (namelen > 32) | |
452 | len = 32; | |
453 | ||
454 | down_read(&uts_sem); | |
455 | for (i = 0; i < len; ++i) { | |
e9ff3990 SH |
456 | __put_user(utsname()->domainname[i], name + i); |
457 | if (utsname()->domainname[i] == '\0') | |
1da177e4 LT |
458 | break; |
459 | } | |
460 | up_read(&uts_sem); | |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
1da177e4 LT |
465 | /* |
466 | * The following stuff should move into a header file should it ever | |
467 | * be labeled "officially supported." Right now, there is just enough | |
468 | * support to avoid applications (such as tar) printing error | |
469 | * messages. The attributes are not really implemented. | |
470 | */ | |
471 | ||
472 | /* | |
473 | * Values for Property list entry flag | |
474 | */ | |
475 | #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry | |
476 | by default */ | |
477 | #define PLE_FLAG_MASK 0x1 /* Valid flag values */ | |
478 | #define PLE_FLAG_ALL -1 /* All flag value */ | |
479 | ||
480 | struct proplistname_args { | |
481 | unsigned int pl_mask; | |
482 | unsigned int pl_numnames; | |
483 | char **pl_names; | |
484 | }; | |
485 | ||
486 | union pl_args { | |
487 | struct setargs { | |
488 | char __user *path; | |
489 | long follow; | |
490 | long nbytes; | |
491 | char __user *buf; | |
492 | } set; | |
493 | struct fsetargs { | |
494 | long fd; | |
495 | long nbytes; | |
496 | char __user *buf; | |
497 | } fset; | |
498 | struct getargs { | |
499 | char __user *path; | |
500 | long follow; | |
501 | struct proplistname_args __user *name_args; | |
502 | long nbytes; | |
503 | char __user *buf; | |
504 | int __user *min_buf_size; | |
505 | } get; | |
506 | struct fgetargs { | |
507 | long fd; | |
508 | struct proplistname_args __user *name_args; | |
509 | long nbytes; | |
510 | char __user *buf; | |
511 | int __user *min_buf_size; | |
512 | } fget; | |
513 | struct delargs { | |
514 | char __user *path; | |
515 | long follow; | |
516 | struct proplistname_args __user *name_args; | |
517 | } del; | |
518 | struct fdelargs { | |
519 | long fd; | |
520 | struct proplistname_args __user *name_args; | |
521 | } fdel; | |
522 | }; | |
523 | ||
524 | enum pl_code { | |
525 | PL_SET = 1, PL_FSET = 2, | |
526 | PL_GET = 3, PL_FGET = 4, | |
527 | PL_DEL = 5, PL_FDEL = 6 | |
528 | }; | |
529 | ||
530 | asmlinkage long | |
531 | osf_proplist_syscall(enum pl_code code, union pl_args __user *args) | |
532 | { | |
533 | long error; | |
534 | int __user *min_buf_size_ptr; | |
535 | ||
536 | lock_kernel(); | |
537 | switch (code) { | |
538 | case PL_SET: | |
539 | if (get_user(error, &args->set.nbytes)) | |
540 | error = -EFAULT; | |
541 | break; | |
542 | case PL_FSET: | |
543 | if (get_user(error, &args->fset.nbytes)) | |
544 | error = -EFAULT; | |
545 | break; | |
546 | case PL_GET: | |
547 | error = get_user(min_buf_size_ptr, &args->get.min_buf_size); | |
548 | if (error) | |
549 | break; | |
550 | error = put_user(0, min_buf_size_ptr); | |
551 | break; | |
552 | case PL_FGET: | |
553 | error = get_user(min_buf_size_ptr, &args->fget.min_buf_size); | |
554 | if (error) | |
555 | break; | |
556 | error = put_user(0, min_buf_size_ptr); | |
557 | break; | |
558 | case PL_DEL: | |
559 | case PL_FDEL: | |
560 | error = 0; | |
561 | break; | |
562 | default: | |
563 | error = -EOPNOTSUPP; | |
564 | break; | |
565 | }; | |
566 | unlock_kernel(); | |
567 | return error; | |
568 | } | |
569 | ||
570 | asmlinkage int | |
571 | osf_sigstack(struct sigstack __user *uss, struct sigstack __user *uoss) | |
572 | { | |
573 | unsigned long usp = rdusp(); | |
574 | unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size; | |
575 | unsigned long oss_os = on_sig_stack(usp); | |
576 | int error; | |
577 | ||
578 | if (uss) { | |
579 | void __user *ss_sp; | |
580 | ||
581 | error = -EFAULT; | |
582 | if (get_user(ss_sp, &uss->ss_sp)) | |
583 | goto out; | |
584 | ||
585 | /* If the current stack was set with sigaltstack, don't | |
586 | swap stacks while we are on it. */ | |
587 | error = -EPERM; | |
588 | if (current->sas_ss_sp && on_sig_stack(usp)) | |
589 | goto out; | |
590 | ||
591 | /* Since we don't know the extent of the stack, and we don't | |
592 | track onstack-ness, but rather calculate it, we must | |
593 | presume a size. Ho hum this interface is lossy. */ | |
594 | current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ; | |
595 | current->sas_ss_size = SIGSTKSZ; | |
596 | } | |
597 | ||
598 | if (uoss) { | |
599 | error = -EFAULT; | |
600 | if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)) | |
601 | || __put_user(oss_sp, &uoss->ss_sp) | |
602 | || __put_user(oss_os, &uoss->ss_onstack)) | |
603 | goto out; | |
604 | } | |
605 | ||
606 | error = 0; | |
607 | out: | |
608 | return error; | |
609 | } | |
610 | ||
611 | asmlinkage long | |
612 | osf_sysinfo(int command, char __user *buf, long count) | |
613 | { | |
e9ff3990 SH |
614 | char *sysinfo_table[] = { |
615 | utsname()->sysname, | |
616 | utsname()->nodename, | |
617 | utsname()->release, | |
618 | utsname()->version, | |
619 | utsname()->machine, | |
1da177e4 LT |
620 | "alpha", /* instruction set architecture */ |
621 | "dummy", /* hardware serial number */ | |
622 | "dummy", /* hardware manufacturer */ | |
623 | "dummy", /* secure RPC domain */ | |
624 | }; | |
625 | unsigned long offset; | |
626 | char *res; | |
627 | long len, err = -EINVAL; | |
628 | ||
629 | offset = command-1; | |
25c8716c | 630 | if (offset >= ARRAY_SIZE(sysinfo_table)) { |
1da177e4 LT |
631 | /* Digital UNIX has a few unpublished interfaces here */ |
632 | printk("sysinfo(%d)", command); | |
633 | goto out; | |
634 | } | |
25c8716c | 635 | |
1da177e4 LT |
636 | down_read(&uts_sem); |
637 | res = sysinfo_table[offset]; | |
638 | len = strlen(res)+1; | |
639 | if (len > count) | |
640 | len = count; | |
641 | if (copy_to_user(buf, res, len)) | |
642 | err = -EFAULT; | |
643 | else | |
644 | err = 0; | |
645 | up_read(&uts_sem); | |
646 | out: | |
647 | return err; | |
648 | } | |
649 | ||
650 | asmlinkage unsigned long | |
651 | osf_getsysinfo(unsigned long op, void __user *buffer, unsigned long nbytes, | |
652 | int __user *start, void __user *arg) | |
653 | { | |
654 | unsigned long w; | |
655 | struct percpu_struct *cpu; | |
656 | ||
657 | switch (op) { | |
658 | case GSI_IEEE_FP_CONTROL: | |
659 | /* Return current software fp control & status bits. */ | |
660 | /* Note that DU doesn't verify available space here. */ | |
661 | ||
662 | w = current_thread_info()->ieee_state & IEEE_SW_MASK; | |
663 | w = swcr_update_status(w, rdfpcr()); | |
664 | if (put_user(w, (unsigned long __user *) buffer)) | |
665 | return -EFAULT; | |
666 | return 0; | |
667 | ||
668 | case GSI_IEEE_STATE_AT_SIGNAL: | |
669 | /* | |
670 | * Not sure anybody will ever use this weird stuff. These | |
671 | * ops can be used (under OSF/1) to set the fpcr that should | |
672 | * be used when a signal handler starts executing. | |
673 | */ | |
674 | break; | |
675 | ||
676 | case GSI_UACPROC: | |
677 | if (nbytes < sizeof(unsigned int)) | |
678 | return -EINVAL; | |
679 | w = (current_thread_info()->flags >> UAC_SHIFT) & UAC_BITMASK; | |
680 | if (put_user(w, (unsigned int __user *)buffer)) | |
681 | return -EFAULT; | |
682 | return 1; | |
683 | ||
684 | case GSI_PROC_TYPE: | |
685 | if (nbytes < sizeof(unsigned long)) | |
686 | return -EINVAL; | |
687 | cpu = (struct percpu_struct*) | |
688 | ((char*)hwrpb + hwrpb->processor_offset); | |
689 | w = cpu->type; | |
690 | if (put_user(w, (unsigned long __user*)buffer)) | |
691 | return -EFAULT; | |
692 | return 1; | |
693 | ||
694 | case GSI_GET_HWRPB: | |
695 | if (nbytes < sizeof(*hwrpb)) | |
696 | return -EINVAL; | |
697 | if (copy_to_user(buffer, hwrpb, nbytes) != 0) | |
698 | return -EFAULT; | |
699 | return 1; | |
700 | ||
701 | default: | |
702 | break; | |
703 | } | |
704 | ||
705 | return -EOPNOTSUPP; | |
706 | } | |
707 | ||
708 | asmlinkage unsigned long | |
709 | osf_setsysinfo(unsigned long op, void __user *buffer, unsigned long nbytes, | |
710 | int __user *start, void __user *arg) | |
711 | { | |
712 | switch (op) { | |
713 | case SSI_IEEE_FP_CONTROL: { | |
714 | unsigned long swcr, fpcr; | |
715 | unsigned int *state; | |
716 | ||
717 | /* | |
718 | * Alpha Architecture Handbook 4.7.7.3: | |
719 | * To be fully IEEE compiant, we must track the current IEEE | |
720 | * exception state in software, because spurrious bits can be | |
721 | * set in the trap shadow of a software-complete insn. | |
722 | */ | |
723 | ||
724 | if (get_user(swcr, (unsigned long __user *)buffer)) | |
725 | return -EFAULT; | |
726 | state = ¤t_thread_info()->ieee_state; | |
727 | ||
728 | /* Update softare trap enable bits. */ | |
729 | *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK); | |
730 | ||
731 | /* Update the real fpcr. */ | |
732 | fpcr = rdfpcr() & FPCR_DYN_MASK; | |
733 | fpcr |= ieee_swcr_to_fpcr(swcr); | |
734 | wrfpcr(fpcr); | |
735 | ||
736 | return 0; | |
737 | } | |
738 | ||
739 | case SSI_IEEE_RAISE_EXCEPTION: { | |
740 | unsigned long exc, swcr, fpcr, fex; | |
741 | unsigned int *state; | |
742 | ||
743 | if (get_user(exc, (unsigned long __user *)buffer)) | |
744 | return -EFAULT; | |
745 | state = ¤t_thread_info()->ieee_state; | |
746 | exc &= IEEE_STATUS_MASK; | |
747 | ||
748 | /* Update softare trap enable bits. */ | |
749 | swcr = (*state & IEEE_SW_MASK) | exc; | |
750 | *state |= exc; | |
751 | ||
752 | /* Update the real fpcr. */ | |
753 | fpcr = rdfpcr(); | |
754 | fpcr |= ieee_swcr_to_fpcr(swcr); | |
755 | wrfpcr(fpcr); | |
756 | ||
757 | /* If any exceptions set by this call, and are unmasked, | |
758 | send a signal. Old exceptions are not signaled. */ | |
759 | fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr; | |
760 | if (fex) { | |
761 | siginfo_t info; | |
762 | int si_code = 0; | |
763 | ||
764 | if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND; | |
765 | if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES; | |
766 | if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND; | |
767 | if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF; | |
768 | if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV; | |
769 | if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV; | |
770 | ||
771 | info.si_signo = SIGFPE; | |
772 | info.si_errno = 0; | |
773 | info.si_code = si_code; | |
774 | info.si_addr = NULL; /* FIXME */ | |
775 | send_sig_info(SIGFPE, &info, current); | |
776 | } | |
777 | return 0; | |
778 | } | |
779 | ||
780 | case SSI_IEEE_STATE_AT_SIGNAL: | |
781 | case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: | |
782 | /* | |
783 | * Not sure anybody will ever use this weird stuff. These | |
784 | * ops can be used (under OSF/1) to set the fpcr that should | |
785 | * be used when a signal handler starts executing. | |
786 | */ | |
787 | break; | |
788 | ||
789 | case SSI_NVPAIRS: { | |
790 | unsigned long v, w, i; | |
791 | unsigned int old, new; | |
792 | ||
793 | for (i = 0; i < nbytes; ++i) { | |
794 | ||
795 | if (get_user(v, 2*i + (unsigned int __user *)buffer)) | |
796 | return -EFAULT; | |
797 | if (get_user(w, 2*i + 1 + (unsigned int __user *)buffer)) | |
798 | return -EFAULT; | |
799 | switch (v) { | |
800 | case SSIN_UACPROC: | |
801 | again: | |
802 | old = current_thread_info()->flags; | |
803 | new = old & ~(UAC_BITMASK << UAC_SHIFT); | |
804 | new = new | (w & UAC_BITMASK) << UAC_SHIFT; | |
805 | if (cmpxchg(¤t_thread_info()->flags, | |
806 | old, new) != old) | |
807 | goto again; | |
808 | break; | |
809 | ||
810 | default: | |
811 | return -EOPNOTSUPP; | |
812 | } | |
813 | } | |
814 | return 0; | |
815 | } | |
816 | ||
817 | default: | |
818 | break; | |
819 | } | |
820 | ||
821 | return -EOPNOTSUPP; | |
822 | } | |
823 | ||
824 | /* Translations due to the fact that OSF's time_t is an int. Which | |
825 | affects all sorts of things, like timeval and itimerval. */ | |
826 | ||
827 | extern struct timezone sys_tz; | |
1da177e4 LT |
828 | |
829 | struct timeval32 | |
830 | { | |
831 | int tv_sec, tv_usec; | |
832 | }; | |
833 | ||
834 | struct itimerval32 | |
835 | { | |
836 | struct timeval32 it_interval; | |
837 | struct timeval32 it_value; | |
838 | }; | |
839 | ||
840 | static inline long | |
841 | get_tv32(struct timeval *o, struct timeval32 __user *i) | |
842 | { | |
843 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
844 | (__get_user(o->tv_sec, &i->tv_sec) | | |
845 | __get_user(o->tv_usec, &i->tv_usec))); | |
846 | } | |
847 | ||
848 | static inline long | |
849 | put_tv32(struct timeval32 __user *o, struct timeval *i) | |
850 | { | |
851 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
852 | (__put_user(i->tv_sec, &o->tv_sec) | | |
853 | __put_user(i->tv_usec, &o->tv_usec))); | |
854 | } | |
855 | ||
856 | static inline long | |
857 | get_it32(struct itimerval *o, struct itimerval32 __user *i) | |
858 | { | |
859 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
860 | (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | | |
861 | __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | | |
862 | __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | | |
863 | __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); | |
864 | } | |
865 | ||
866 | static inline long | |
867 | put_it32(struct itimerval32 __user *o, struct itimerval *i) | |
868 | { | |
869 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
870 | (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | | |
871 | __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | | |
872 | __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | | |
873 | __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); | |
874 | } | |
875 | ||
876 | static inline void | |
877 | jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value) | |
878 | { | |
879 | value->tv_usec = (jiffies % HZ) * (1000000L / HZ); | |
880 | value->tv_sec = jiffies / HZ; | |
881 | } | |
882 | ||
883 | asmlinkage int | |
884 | osf_gettimeofday(struct timeval32 __user *tv, struct timezone __user *tz) | |
885 | { | |
886 | if (tv) { | |
887 | struct timeval ktv; | |
888 | do_gettimeofday(&ktv); | |
889 | if (put_tv32(tv, &ktv)) | |
890 | return -EFAULT; | |
891 | } | |
892 | if (tz) { | |
893 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) | |
894 | return -EFAULT; | |
895 | } | |
896 | return 0; | |
897 | } | |
898 | ||
899 | asmlinkage int | |
900 | osf_settimeofday(struct timeval32 __user *tv, struct timezone __user *tz) | |
901 | { | |
902 | struct timespec kts; | |
903 | struct timezone ktz; | |
904 | ||
905 | if (tv) { | |
906 | if (get_tv32((struct timeval *)&kts, tv)) | |
907 | return -EFAULT; | |
908 | } | |
909 | if (tz) { | |
910 | if (copy_from_user(&ktz, tz, sizeof(*tz))) | |
911 | return -EFAULT; | |
912 | } | |
913 | ||
914 | kts.tv_nsec *= 1000; | |
915 | ||
916 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); | |
917 | } | |
918 | ||
919 | asmlinkage int | |
920 | osf_getitimer(int which, struct itimerval32 __user *it) | |
921 | { | |
922 | struct itimerval kit; | |
923 | int error; | |
924 | ||
925 | error = do_getitimer(which, &kit); | |
926 | if (!error && put_it32(it, &kit)) | |
927 | error = -EFAULT; | |
928 | ||
929 | return error; | |
930 | } | |
931 | ||
932 | asmlinkage int | |
933 | osf_setitimer(int which, struct itimerval32 __user *in, struct itimerval32 __user *out) | |
934 | { | |
935 | struct itimerval kin, kout; | |
936 | int error; | |
937 | ||
938 | if (in) { | |
939 | if (get_it32(&kin, in)) | |
940 | return -EFAULT; | |
941 | } else | |
942 | memset(&kin, 0, sizeof(kin)); | |
943 | ||
944 | error = do_setitimer(which, &kin, out ? &kout : NULL); | |
945 | if (error || !out) | |
946 | return error; | |
947 | ||
948 | if (put_it32(out, &kout)) | |
949 | return -EFAULT; | |
950 | ||
951 | return 0; | |
952 | ||
953 | } | |
954 | ||
955 | asmlinkage int | |
956 | osf_utimes(char __user *filename, struct timeval32 __user *tvs) | |
957 | { | |
958 | struct timeval ktvs[2]; | |
959 | ||
960 | if (tvs) { | |
961 | if (get_tv32(&ktvs[0], &tvs[0]) || | |
962 | get_tv32(&ktvs[1], &tvs[1])) | |
963 | return -EFAULT; | |
964 | } | |
965 | ||
5590ff0d | 966 | return do_utimes(AT_FDCWD, filename, tvs ? ktvs : NULL); |
1da177e4 LT |
967 | } |
968 | ||
969 | #define MAX_SELECT_SECONDS \ | |
970 | ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1) | |
971 | ||
972 | asmlinkage int | |
973 | osf_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, | |
974 | struct timeval32 __user *tvp) | |
975 | { | |
976 | fd_set_bits fds; | |
977 | char *bits; | |
978 | size_t size; | |
979 | long timeout; | |
980 | int ret = -EINVAL; | |
badf1662 | 981 | struct fdtable *fdt; |
bbea9f69 | 982 | int max_fds; |
1da177e4 LT |
983 | |
984 | timeout = MAX_SCHEDULE_TIMEOUT; | |
985 | if (tvp) { | |
986 | time_t sec, usec; | |
987 | ||
988 | if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp)) | |
989 | || __get_user(sec, &tvp->tv_sec) | |
990 | || __get_user(usec, &tvp->tv_usec)) { | |
991 | ret = -EFAULT; | |
992 | goto out_nofds; | |
993 | } | |
994 | ||
995 | if (sec < 0 || usec < 0) | |
996 | goto out_nofds; | |
997 | ||
998 | if ((unsigned long) sec < MAX_SELECT_SECONDS) { | |
999 | timeout = (usec + 1000000/HZ - 1) / (1000000/HZ); | |
1000 | timeout += sec * (unsigned long) HZ; | |
1001 | } | |
1002 | } | |
1003 | ||
4fb3a538 | 1004 | rcu_read_lock(); |
badf1662 | 1005 | fdt = files_fdtable(current->files); |
bbea9f69 | 1006 | max_fds = fdt->max_fds; |
4fb3a538 | 1007 | rcu_read_unlock(); |
bbea9f69 | 1008 | if (n < 0 || n > max_fds) |
1da177e4 LT |
1009 | goto out_nofds; |
1010 | ||
1011 | /* | |
1012 | * We need 6 bitmaps (in/out/ex for both incoming and outgoing), | |
1013 | * since we used fdset we need to allocate memory in units of | |
1014 | * long-words. | |
1015 | */ | |
1016 | ret = -ENOMEM; | |
1017 | size = FDS_BYTES(n); | |
1018 | bits = kmalloc(6 * size, GFP_KERNEL); | |
1019 | if (!bits) | |
1020 | goto out_nofds; | |
1021 | fds.in = (unsigned long *) bits; | |
1022 | fds.out = (unsigned long *) (bits + size); | |
1023 | fds.ex = (unsigned long *) (bits + 2*size); | |
1024 | fds.res_in = (unsigned long *) (bits + 3*size); | |
1025 | fds.res_out = (unsigned long *) (bits + 4*size); | |
1026 | fds.res_ex = (unsigned long *) (bits + 5*size); | |
1027 | ||
1028 | if ((ret = get_fd_set(n, inp->fds_bits, fds.in)) || | |
1029 | (ret = get_fd_set(n, outp->fds_bits, fds.out)) || | |
1030 | (ret = get_fd_set(n, exp->fds_bits, fds.ex))) | |
1031 | goto out; | |
1032 | zero_fd_set(n, fds.res_in); | |
1033 | zero_fd_set(n, fds.res_out); | |
1034 | zero_fd_set(n, fds.res_ex); | |
1035 | ||
1036 | ret = do_select(n, &fds, &timeout); | |
1037 | ||
1038 | /* OSF does not copy back the remaining time. */ | |
1039 | ||
1040 | if (ret < 0) | |
1041 | goto out; | |
1042 | if (!ret) { | |
1043 | ret = -ERESTARTNOHAND; | |
1044 | if (signal_pending(current)) | |
1045 | goto out; | |
1046 | ret = 0; | |
1047 | } | |
1048 | ||
1049 | if (set_fd_set(n, inp->fds_bits, fds.res_in) || | |
1050 | set_fd_set(n, outp->fds_bits, fds.res_out) || | |
1051 | set_fd_set(n, exp->fds_bits, fds.res_ex)) | |
1052 | ret = -EFAULT; | |
1053 | ||
1054 | out: | |
1055 | kfree(bits); | |
1056 | out_nofds: | |
1057 | return ret; | |
1058 | } | |
1059 | ||
1060 | struct rusage32 { | |
1061 | struct timeval32 ru_utime; /* user time used */ | |
1062 | struct timeval32 ru_stime; /* system time used */ | |
1063 | long ru_maxrss; /* maximum resident set size */ | |
1064 | long ru_ixrss; /* integral shared memory size */ | |
1065 | long ru_idrss; /* integral unshared data size */ | |
1066 | long ru_isrss; /* integral unshared stack size */ | |
1067 | long ru_minflt; /* page reclaims */ | |
1068 | long ru_majflt; /* page faults */ | |
1069 | long ru_nswap; /* swaps */ | |
1070 | long ru_inblock; /* block input operations */ | |
1071 | long ru_oublock; /* block output operations */ | |
1072 | long ru_msgsnd; /* messages sent */ | |
1073 | long ru_msgrcv; /* messages received */ | |
1074 | long ru_nsignals; /* signals received */ | |
1075 | long ru_nvcsw; /* voluntary context switches */ | |
1076 | long ru_nivcsw; /* involuntary " */ | |
1077 | }; | |
1078 | ||
1079 | asmlinkage int | |
1080 | osf_getrusage(int who, struct rusage32 __user *ru) | |
1081 | { | |
1082 | struct rusage32 r; | |
1083 | ||
1084 | if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) | |
1085 | return -EINVAL; | |
1086 | ||
1087 | memset(&r, 0, sizeof(r)); | |
1088 | switch (who) { | |
1089 | case RUSAGE_SELF: | |
1090 | jiffies_to_timeval32(current->utime, &r.ru_utime); | |
1091 | jiffies_to_timeval32(current->stime, &r.ru_stime); | |
1092 | r.ru_minflt = current->min_flt; | |
1093 | r.ru_majflt = current->maj_flt; | |
1094 | break; | |
1095 | case RUSAGE_CHILDREN: | |
1096 | jiffies_to_timeval32(current->signal->cutime, &r.ru_utime); | |
1097 | jiffies_to_timeval32(current->signal->cstime, &r.ru_stime); | |
1098 | r.ru_minflt = current->signal->cmin_flt; | |
1099 | r.ru_majflt = current->signal->cmaj_flt; | |
1100 | break; | |
1101 | } | |
1102 | ||
1103 | return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0; | |
1104 | } | |
1105 | ||
1106 | asmlinkage long | |
1107 | osf_wait4(pid_t pid, int __user *ustatus, int options, | |
1108 | struct rusage32 __user *ur) | |
1109 | { | |
1110 | struct rusage r; | |
1111 | long ret, err; | |
1112 | mm_segment_t old_fs; | |
1113 | ||
1114 | if (!ur) | |
1115 | return sys_wait4(pid, ustatus, options, NULL); | |
1116 | ||
1117 | old_fs = get_fs(); | |
1118 | ||
1119 | set_fs (KERNEL_DS); | |
1120 | ret = sys_wait4(pid, ustatus, options, (struct rusage __user *) &r); | |
1121 | set_fs (old_fs); | |
1122 | ||
1123 | if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur))) | |
1124 | return -EFAULT; | |
1125 | ||
1126 | err = 0; | |
1127 | err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec); | |
1128 | err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec); | |
1129 | err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec); | |
1130 | err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec); | |
1131 | err |= __put_user(r.ru_maxrss, &ur->ru_maxrss); | |
1132 | err |= __put_user(r.ru_ixrss, &ur->ru_ixrss); | |
1133 | err |= __put_user(r.ru_idrss, &ur->ru_idrss); | |
1134 | err |= __put_user(r.ru_isrss, &ur->ru_isrss); | |
1135 | err |= __put_user(r.ru_minflt, &ur->ru_minflt); | |
1136 | err |= __put_user(r.ru_majflt, &ur->ru_majflt); | |
1137 | err |= __put_user(r.ru_nswap, &ur->ru_nswap); | |
1138 | err |= __put_user(r.ru_inblock, &ur->ru_inblock); | |
1139 | err |= __put_user(r.ru_oublock, &ur->ru_oublock); | |
1140 | err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd); | |
1141 | err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv); | |
1142 | err |= __put_user(r.ru_nsignals, &ur->ru_nsignals); | |
1143 | err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw); | |
1144 | err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw); | |
1145 | ||
1146 | return err ? err : ret; | |
1147 | } | |
1148 | ||
1149 | /* | |
1150 | * I don't know what the parameters are: the first one | |
1151 | * seems to be a timeval pointer, and I suspect the second | |
1152 | * one is the time remaining.. Ho humm.. No documentation. | |
1153 | */ | |
1154 | asmlinkage int | |
1155 | osf_usleep_thread(struct timeval32 __user *sleep, struct timeval32 __user *remain) | |
1156 | { | |
1157 | struct timeval tmp; | |
1158 | unsigned long ticks; | |
1159 | ||
1160 | if (get_tv32(&tmp, sleep)) | |
1161 | goto fault; | |
1162 | ||
24d568ed | 1163 | ticks = timeval_to_jiffies(&tmp); |
1da177e4 | 1164 | |
20c6abd1 | 1165 | ticks = schedule_timeout_interruptible(ticks); |
1da177e4 LT |
1166 | |
1167 | if (remain) { | |
24d568ed | 1168 | jiffies_to_timeval(ticks, &tmp); |
1da177e4 LT |
1169 | if (put_tv32(remain, &tmp)) |
1170 | goto fault; | |
1171 | } | |
1172 | ||
1173 | return 0; | |
1174 | fault: | |
1175 | return -EFAULT; | |
1176 | } | |
1177 | ||
1178 | ||
1179 | struct timex32 { | |
1180 | unsigned int modes; /* mode selector */ | |
1181 | long offset; /* time offset (usec) */ | |
1182 | long freq; /* frequency offset (scaled ppm) */ | |
1183 | long maxerror; /* maximum error (usec) */ | |
1184 | long esterror; /* estimated error (usec) */ | |
1185 | int status; /* clock command/status */ | |
1186 | long constant; /* pll time constant */ | |
1187 | long precision; /* clock precision (usec) (read only) */ | |
1188 | long tolerance; /* clock frequency tolerance (ppm) | |
1189 | * (read only) | |
1190 | */ | |
1191 | struct timeval32 time; /* (read only) */ | |
1192 | long tick; /* (modified) usecs between clock ticks */ | |
1193 | ||
1194 | long ppsfreq; /* pps frequency (scaled ppm) (ro) */ | |
1195 | long jitter; /* pps jitter (us) (ro) */ | |
1196 | int shift; /* interval duration (s) (shift) (ro) */ | |
1197 | long stabil; /* pps stability (scaled ppm) (ro) */ | |
1198 | long jitcnt; /* jitter limit exceeded (ro) */ | |
1199 | long calcnt; /* calibration intervals (ro) */ | |
1200 | long errcnt; /* calibration errors (ro) */ | |
1201 | long stbcnt; /* stability limit exceeded (ro) */ | |
1202 | ||
1203 | int :32; int :32; int :32; int :32; | |
1204 | int :32; int :32; int :32; int :32; | |
1205 | int :32; int :32; int :32; int :32; | |
1206 | }; | |
1207 | ||
1208 | asmlinkage int | |
1209 | sys_old_adjtimex(struct timex32 __user *txc_p) | |
1210 | { | |
1211 | struct timex txc; | |
1212 | int ret; | |
1213 | ||
1214 | /* copy relevant bits of struct timex. */ | |
1215 | if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) || | |
1216 | copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) - | |
1217 | offsetof(struct timex32, time))) | |
1218 | return -EFAULT; | |
1219 | ||
1220 | ret = do_adjtimex(&txc); | |
1221 | if (ret < 0) | |
1222 | return ret; | |
1223 | ||
1224 | /* copy back to timex32 */ | |
1225 | if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) || | |
1226 | (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) - | |
1227 | offsetof(struct timex32, tick))) || | |
1228 | (put_tv32(&txc_p->time, &txc.time))) | |
1229 | return -EFAULT; | |
1230 | ||
1231 | return ret; | |
1232 | } | |
1233 | ||
1234 | /* Get an address range which is currently unmapped. Similar to the | |
1235 | generic version except that we know how to honor ADDR_LIMIT_32BIT. */ | |
1236 | ||
1237 | static unsigned long | |
1238 | arch_get_unmapped_area_1(unsigned long addr, unsigned long len, | |
1239 | unsigned long limit) | |
1240 | { | |
1241 | struct vm_area_struct *vma = find_vma(current->mm, addr); | |
1242 | ||
1243 | while (1) { | |
1244 | /* At this point: (!vma || addr < vma->vm_end). */ | |
1245 | if (limit - len < addr) | |
1246 | return -ENOMEM; | |
1247 | if (!vma || addr + len <= vma->vm_start) | |
1248 | return addr; | |
1249 | addr = vma->vm_end; | |
1250 | vma = vma->vm_next; | |
1251 | } | |
1252 | } | |
1253 | ||
1254 | unsigned long | |
1255 | arch_get_unmapped_area(struct file *filp, unsigned long addr, | |
1256 | unsigned long len, unsigned long pgoff, | |
1257 | unsigned long flags) | |
1258 | { | |
1259 | unsigned long limit; | |
1260 | ||
1261 | /* "32 bit" actually means 31 bit, since pointers sign extend. */ | |
1262 | if (current->personality & ADDR_LIMIT_32BIT) | |
1263 | limit = 0x80000000; | |
1264 | else | |
1265 | limit = TASK_SIZE; | |
1266 | ||
1267 | if (len > limit) | |
1268 | return -ENOMEM; | |
1269 | ||
1270 | /* First, see if the given suggestion fits. | |
1271 | ||
1272 | The OSF/1 loader (/sbin/loader) relies on us returning an | |
1273 | address larger than the requested if one exists, which is | |
1274 | a terribly broken way to program. | |
1275 | ||
1276 | That said, I can see the use in being able to suggest not | |
1277 | merely specific addresses, but regions of memory -- perhaps | |
1278 | this feature should be incorporated into all ports? */ | |
1279 | ||
1280 | if (addr) { | |
1281 | addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); | |
1282 | if (addr != (unsigned long) -ENOMEM) | |
1283 | return addr; | |
1284 | } | |
1285 | ||
1286 | /* Next, try allocating at TASK_UNMAPPED_BASE. */ | |
1287 | addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), | |
1288 | len, limit); | |
1289 | if (addr != (unsigned long) -ENOMEM) | |
1290 | return addr; | |
1291 | ||
1292 | /* Finally, try allocating in low memory. */ | |
1293 | addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit); | |
1294 | ||
1295 | return addr; | |
1296 | } | |
1297 | ||
1298 | #ifdef CONFIG_OSF4_COMPAT | |
1299 | ||
1300 | /* Clear top 32 bits of iov_len in the user's buffer for | |
1301 | compatibility with old versions of OSF/1 where iov_len | |
1302 | was defined as int. */ | |
1303 | static int | |
1304 | osf_fix_iov_len(const struct iovec __user *iov, unsigned long count) | |
1305 | { | |
1306 | unsigned long i; | |
1307 | ||
1308 | for (i = 0 ; i < count ; i++) { | |
1309 | int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1; | |
1310 | ||
1311 | if (put_user(0, iov_len_high)) | |
1312 | return -EFAULT; | |
1313 | } | |
1314 | return 0; | |
1315 | } | |
1316 | ||
1317 | asmlinkage ssize_t | |
1318 | osf_readv(unsigned long fd, const struct iovec __user * vector, unsigned long count) | |
1319 | { | |
1320 | if (unlikely(personality(current->personality) == PER_OSF4)) | |
1321 | if (osf_fix_iov_len(vector, count)) | |
1322 | return -EFAULT; | |
1323 | return sys_readv(fd, vector, count); | |
1324 | } | |
1325 | ||
1326 | asmlinkage ssize_t | |
1327 | osf_writev(unsigned long fd, const struct iovec __user * vector, unsigned long count) | |
1328 | { | |
1329 | if (unlikely(personality(current->personality) == PER_OSF4)) | |
1330 | if (osf_fix_iov_len(vector, count)) | |
1331 | return -EFAULT; | |
1332 | return sys_writev(fd, vector, count); | |
1333 | } | |
1334 | ||
1335 | #endif |