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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> | |
1da177e4 LT |
18 | #include <linux/stddef.h> |
19 | #include <linux/syscalls.h> | |
20 | #include <linux/unistd.h> | |
21 | #include <linux/ptrace.h> | |
1da177e4 | 22 | #include <linux/user.h> |
1da177e4 LT |
23 | #include <linux/utsname.h> |
24 | #include <linux/time.h> | |
25 | #include <linux/timex.h> | |
26 | #include <linux/major.h> | |
27 | #include <linux/stat.h> | |
28 | #include <linux/mman.h> | |
29 | #include <linux/shm.h> | |
30 | #include <linux/poll.h> | |
31 | #include <linux/file.h> | |
32 | #include <linux/types.h> | |
33 | #include <linux/ipc.h> | |
34 | #include <linux/namei.h> | |
35 | #include <linux/uio.h> | |
36 | #include <linux/vfs.h> | |
4fb3a538 | 37 | #include <linux/rcupdate.h> |
5a0e3ad6 | 38 | #include <linux/slab.h> |
1da177e4 LT |
39 | |
40 | #include <asm/fpu.h> | |
41 | #include <asm/io.h> | |
42 | #include <asm/uaccess.h> | |
43 | #include <asm/system.h> | |
44 | #include <asm/sysinfo.h> | |
45 | #include <asm/hwrpb.h> | |
46 | #include <asm/processor.h> | |
47 | ||
1da177e4 LT |
48 | /* |
49 | * Brk needs to return an error. Still support Linux's brk(0) query idiom, | |
50 | * which OSF programs just shouldn't be doing. We're still not quite | |
51 | * identical to OSF as we don't return 0 on success, but doing otherwise | |
52 | * would require changes to libc. Hopefully this is good enough. | |
53 | */ | |
e5d9a90c | 54 | SYSCALL_DEFINE1(osf_brk, unsigned long, brk) |
1da177e4 LT |
55 | { |
56 | unsigned long retval = sys_brk(brk); | |
57 | if (brk && brk != retval) | |
58 | retval = -ENOMEM; | |
59 | return retval; | |
60 | } | |
61 | ||
62 | /* | |
63 | * This is pure guess-work.. | |
64 | */ | |
e5d9a90c IK |
65 | SYSCALL_DEFINE4(osf_set_program_attributes, unsigned long, text_start, |
66 | unsigned long, text_len, unsigned long, bss_start, | |
67 | unsigned long, bss_len) | |
1da177e4 LT |
68 | { |
69 | struct mm_struct *mm; | |
70 | ||
1da177e4 LT |
71 | mm = current->mm; |
72 | mm->end_code = bss_start + bss_len; | |
2444e56b | 73 | mm->start_brk = bss_start + bss_len; |
1da177e4 LT |
74 | mm->brk = bss_start + bss_len; |
75 | #if 0 | |
76 | printk("set_program_attributes(%lx %lx %lx %lx)\n", | |
77 | text_start, text_len, bss_start, bss_len); | |
78 | #endif | |
1da177e4 LT |
79 | return 0; |
80 | } | |
81 | ||
82 | /* | |
83 | * OSF/1 directory handling functions... | |
84 | * | |
85 | * The "getdents()" interface is much more sane: the "basep" stuff is | |
86 | * braindamage (it can't really handle filesystems where the directory | |
87 | * offset differences aren't the same as "d_reclen"). | |
88 | */ | |
89 | #define NAME_OFFSET offsetof (struct osf_dirent, d_name) | |
1da177e4 LT |
90 | |
91 | struct osf_dirent { | |
92 | unsigned int d_ino; | |
93 | unsigned short d_reclen; | |
94 | unsigned short d_namlen; | |
95 | char d_name[1]; | |
96 | }; | |
97 | ||
98 | struct osf_dirent_callback { | |
99 | struct osf_dirent __user *dirent; | |
100 | long __user *basep; | |
101 | unsigned int count; | |
102 | int error; | |
103 | }; | |
104 | ||
105 | static int | |
106 | osf_filldir(void *__buf, const char *name, int namlen, loff_t offset, | |
afefdbb2 | 107 | u64 ino, unsigned int d_type) |
1da177e4 LT |
108 | { |
109 | struct osf_dirent __user *dirent; | |
110 | struct osf_dirent_callback *buf = (struct osf_dirent_callback *) __buf; | |
180e53a7 | 111 | unsigned int reclen = ALIGN(NAME_OFFSET + namlen + 1, sizeof(u32)); |
afefdbb2 | 112 | unsigned int d_ino; |
1da177e4 LT |
113 | |
114 | buf->error = -EINVAL; /* only used if we fail */ | |
115 | if (reclen > buf->count) | |
116 | return -EINVAL; | |
afefdbb2 | 117 | d_ino = ino; |
645e68ed AV |
118 | if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) { |
119 | buf->error = -EOVERFLOW; | |
afefdbb2 | 120 | return -EOVERFLOW; |
645e68ed | 121 | } |
1da177e4 LT |
122 | if (buf->basep) { |
123 | if (put_user(offset, buf->basep)) | |
645e68ed | 124 | goto Efault; |
1da177e4 LT |
125 | buf->basep = NULL; |
126 | } | |
127 | dirent = buf->dirent; | |
645e68ed AV |
128 | if (put_user(d_ino, &dirent->d_ino) || |
129 | put_user(namlen, &dirent->d_namlen) || | |
130 | put_user(reclen, &dirent->d_reclen) || | |
131 | copy_to_user(dirent->d_name, name, namlen) || | |
1da177e4 | 132 | put_user(0, dirent->d_name + namlen)) |
645e68ed | 133 | goto Efault; |
1da177e4 LT |
134 | dirent = (void __user *)dirent + reclen; |
135 | buf->dirent = dirent; | |
136 | buf->count -= reclen; | |
137 | return 0; | |
645e68ed AV |
138 | Efault: |
139 | buf->error = -EFAULT; | |
140 | return -EFAULT; | |
1da177e4 LT |
141 | } |
142 | ||
e5d9a90c IK |
143 | SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd, |
144 | struct osf_dirent __user *, dirent, unsigned int, count, | |
145 | long __user *, basep) | |
1da177e4 LT |
146 | { |
147 | int error; | |
148 | struct file *file; | |
149 | struct osf_dirent_callback buf; | |
150 | ||
151 | error = -EBADF; | |
152 | file = fget(fd); | |
153 | if (!file) | |
154 | goto out; | |
155 | ||
156 | buf.dirent = dirent; | |
157 | buf.basep = basep; | |
158 | buf.count = count; | |
159 | buf.error = 0; | |
160 | ||
161 | error = vfs_readdir(file, osf_filldir, &buf); | |
53c9c5c0 AV |
162 | if (error >= 0) |
163 | error = buf.error; | |
1da177e4 LT |
164 | if (count != buf.count) |
165 | error = count - buf.count; | |
166 | ||
1da177e4 LT |
167 | fput(file); |
168 | out: | |
169 | return error; | |
170 | } | |
171 | ||
1da177e4 LT |
172 | #undef NAME_OFFSET |
173 | ||
e5d9a90c IK |
174 | SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len, |
175 | unsigned long, prot, unsigned long, flags, unsigned long, fd, | |
176 | unsigned long, off) | |
1da177e4 | 177 | { |
f8b72560 | 178 | unsigned long ret = -EINVAL; |
1da177e4 LT |
179 | |
180 | #if 0 | |
181 | if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED)) | |
182 | printk("%s: unimplemented OSF mmap flags %04lx\n", | |
183 | current->comm, flags); | |
184 | #endif | |
f8b72560 AV |
185 | if ((off + PAGE_ALIGN(len)) < off) |
186 | goto out; | |
187 | if (off & ~PAGE_MASK) | |
188 | goto out; | |
189 | ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); | |
1da177e4 LT |
190 | out: |
191 | return ret; | |
192 | } | |
193 | ||
194 | ||
195 | /* | |
196 | * The OSF/1 statfs structure is much larger, but this should | |
197 | * match the beginning, at least. | |
198 | */ | |
199 | struct osf_statfs { | |
200 | short f_type; | |
201 | short f_flags; | |
202 | int f_fsize; | |
203 | int f_bsize; | |
204 | int f_blocks; | |
205 | int f_bfree; | |
206 | int f_bavail; | |
207 | int f_files; | |
208 | int f_ffree; | |
209 | __kernel_fsid_t f_fsid; | |
210 | }; | |
211 | ||
212 | static int | |
213 | linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat, | |
214 | unsigned long bufsiz) | |
215 | { | |
216 | struct osf_statfs tmp_stat; | |
217 | ||
218 | tmp_stat.f_type = linux_stat->f_type; | |
219 | tmp_stat.f_flags = 0; /* mount flags */ | |
220 | tmp_stat.f_fsize = linux_stat->f_frsize; | |
221 | tmp_stat.f_bsize = linux_stat->f_bsize; | |
222 | tmp_stat.f_blocks = linux_stat->f_blocks; | |
223 | tmp_stat.f_bfree = linux_stat->f_bfree; | |
224 | tmp_stat.f_bavail = linux_stat->f_bavail; | |
225 | tmp_stat.f_files = linux_stat->f_files; | |
226 | tmp_stat.f_ffree = linux_stat->f_ffree; | |
227 | tmp_stat.f_fsid = linux_stat->f_fsid; | |
228 | if (bufsiz > sizeof(tmp_stat)) | |
229 | bufsiz = sizeof(tmp_stat); | |
230 | return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; | |
231 | } | |
232 | ||
233 | static int | |
ebabe9a9 | 234 | do_osf_statfs(struct path *path, struct osf_statfs __user *buffer, |
1da177e4 LT |
235 | unsigned long bufsiz) |
236 | { | |
237 | struct kstatfs linux_stat; | |
ebabe9a9 | 238 | int error = vfs_statfs(path, &linux_stat); |
1da177e4 LT |
239 | if (!error) |
240 | error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); | |
241 | return error; | |
242 | } | |
243 | ||
c7887325 | 244 | SYSCALL_DEFINE3(osf_statfs, const char __user *, pathname, |
e5d9a90c | 245 | struct osf_statfs __user *, buffer, unsigned long, bufsiz) |
1da177e4 | 246 | { |
2d8f3038 | 247 | struct path path; |
1da177e4 LT |
248 | int retval; |
249 | ||
2d8f3038 | 250 | retval = user_path(pathname, &path); |
1da177e4 | 251 | if (!retval) { |
62b88dc1 | 252 | retval = do_osf_statfs(&path, buffer, bufsiz); |
2d8f3038 | 253 | path_put(&path); |
1da177e4 LT |
254 | } |
255 | return retval; | |
256 | } | |
257 | ||
e5d9a90c IK |
258 | SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd, |
259 | struct osf_statfs __user *, buffer, unsigned long, bufsiz) | |
1da177e4 LT |
260 | { |
261 | struct file *file; | |
262 | int retval; | |
263 | ||
264 | retval = -EBADF; | |
265 | file = fget(fd); | |
266 | if (file) { | |
ebabe9a9 | 267 | retval = do_osf_statfs(&file->f_path, buffer, bufsiz); |
1da177e4 LT |
268 | fput(file); |
269 | } | |
270 | return retval; | |
271 | } | |
272 | ||
273 | /* | |
274 | * Uhh.. OSF/1 mount parameters aren't exactly obvious.. | |
275 | * | |
276 | * Although to be frank, neither are the native Linux/i386 ones.. | |
277 | */ | |
278 | struct ufs_args { | |
279 | char __user *devname; | |
280 | int flags; | |
281 | uid_t exroot; | |
282 | }; | |
283 | ||
284 | struct cdfs_args { | |
285 | char __user *devname; | |
286 | int flags; | |
287 | uid_t exroot; | |
288 | ||
289 | /* This has lots more here, which Linux handles with the option block | |
290 | but I'm too lazy to do the translation into ASCII. */ | |
291 | }; | |
292 | ||
293 | struct procfs_args { | |
294 | char __user *devname; | |
295 | int flags; | |
296 | uid_t exroot; | |
297 | }; | |
298 | ||
299 | /* | |
300 | * We can't actually handle ufs yet, so we translate UFS mounts to | |
301 | * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS | |
302 | * layout is so braindead it's a major headache doing it. | |
303 | * | |
304 | * Just how long ago was it written? OTOH our UFS driver may be still | |
305 | * unhappy with OSF UFS. [CHECKME] | |
306 | */ | |
307 | static int | |
308 | osf_ufs_mount(char *dirname, struct ufs_args __user *args, int flags) | |
309 | { | |
310 | int retval; | |
311 | struct cdfs_args tmp; | |
312 | char *devname; | |
313 | ||
314 | retval = -EFAULT; | |
315 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
316 | goto out; | |
317 | devname = getname(tmp.devname); | |
318 | retval = PTR_ERR(devname); | |
319 | if (IS_ERR(devname)) | |
320 | goto out; | |
321 | retval = do_mount(devname, dirname, "ext2", flags, NULL); | |
322 | putname(devname); | |
323 | out: | |
324 | return retval; | |
325 | } | |
326 | ||
327 | static int | |
328 | osf_cdfs_mount(char *dirname, struct cdfs_args __user *args, int flags) | |
329 | { | |
330 | int retval; | |
331 | struct cdfs_args tmp; | |
332 | char *devname; | |
333 | ||
334 | retval = -EFAULT; | |
335 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
336 | goto out; | |
337 | devname = getname(tmp.devname); | |
338 | retval = PTR_ERR(devname); | |
339 | if (IS_ERR(devname)) | |
340 | goto out; | |
341 | retval = do_mount(devname, dirname, "iso9660", flags, NULL); | |
342 | putname(devname); | |
343 | out: | |
344 | return retval; | |
345 | } | |
346 | ||
347 | static int | |
348 | osf_procfs_mount(char *dirname, struct procfs_args __user *args, int flags) | |
349 | { | |
350 | struct procfs_args tmp; | |
351 | ||
352 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
353 | return -EFAULT; | |
354 | ||
355 | return do_mount("", dirname, "proc", flags, NULL); | |
356 | } | |
357 | ||
c7887325 | 358 | SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path, |
e5d9a90c | 359 | int, flag, void __user *, data) |
1da177e4 | 360 | { |
77079dbe | 361 | int retval; |
1da177e4 LT |
362 | char *name; |
363 | ||
1da177e4 LT |
364 | name = getname(path); |
365 | retval = PTR_ERR(name); | |
366 | if (IS_ERR(name)) | |
367 | goto out; | |
368 | switch (typenr) { | |
369 | case 1: | |
370 | retval = osf_ufs_mount(name, data, flag); | |
371 | break; | |
372 | case 6: | |
373 | retval = osf_cdfs_mount(name, data, flag); | |
374 | break; | |
375 | case 9: | |
376 | retval = osf_procfs_mount(name, data, flag); | |
377 | break; | |
378 | default: | |
77079dbe | 379 | retval = -EINVAL; |
1da177e4 LT |
380 | printk("osf_mount(%ld, %x)\n", typenr, flag); |
381 | } | |
382 | putname(name); | |
383 | out: | |
1da177e4 LT |
384 | return retval; |
385 | } | |
386 | ||
e5d9a90c | 387 | SYSCALL_DEFINE1(osf_utsname, char __user *, name) |
1da177e4 LT |
388 | { |
389 | int error; | |
390 | ||
391 | down_read(&uts_sem); | |
392 | error = -EFAULT; | |
e9ff3990 | 393 | if (copy_to_user(name + 0, utsname()->sysname, 32)) |
1da177e4 | 394 | goto out; |
e9ff3990 | 395 | if (copy_to_user(name + 32, utsname()->nodename, 32)) |
1da177e4 | 396 | goto out; |
e9ff3990 | 397 | if (copy_to_user(name + 64, utsname()->release, 32)) |
1da177e4 | 398 | goto out; |
e9ff3990 | 399 | if (copy_to_user(name + 96, utsname()->version, 32)) |
1da177e4 | 400 | goto out; |
e9ff3990 | 401 | if (copy_to_user(name + 128, utsname()->machine, 32)) |
1da177e4 LT |
402 | goto out; |
403 | ||
404 | error = 0; | |
405 | out: | |
406 | up_read(&uts_sem); | |
407 | return error; | |
408 | } | |
409 | ||
e5d9a90c | 410 | SYSCALL_DEFINE0(getpagesize) |
1da177e4 LT |
411 | { |
412 | return PAGE_SIZE; | |
413 | } | |
414 | ||
e5d9a90c | 415 | SYSCALL_DEFINE0(getdtablesize) |
1da177e4 | 416 | { |
9cfe015a | 417 | return sysctl_nr_open; |
1da177e4 LT |
418 | } |
419 | ||
420 | /* | |
421 | * For compatibility with OSF/1 only. Use utsname(2) instead. | |
422 | */ | |
e5d9a90c | 423 | SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen) |
1da177e4 LT |
424 | { |
425 | unsigned len; | |
426 | int i; | |
427 | ||
428 | if (!access_ok(VERIFY_WRITE, name, namelen)) | |
429 | return -EFAULT; | |
430 | ||
431 | len = namelen; | |
432 | if (namelen > 32) | |
433 | len = 32; | |
434 | ||
435 | down_read(&uts_sem); | |
436 | for (i = 0; i < len; ++i) { | |
e9ff3990 SH |
437 | __put_user(utsname()->domainname[i], name + i); |
438 | if (utsname()->domainname[i] == '\0') | |
1da177e4 LT |
439 | break; |
440 | } | |
441 | up_read(&uts_sem); | |
442 | ||
443 | return 0; | |
444 | } | |
445 | ||
1da177e4 LT |
446 | /* |
447 | * The following stuff should move into a header file should it ever | |
448 | * be labeled "officially supported." Right now, there is just enough | |
449 | * support to avoid applications (such as tar) printing error | |
450 | * messages. The attributes are not really implemented. | |
451 | */ | |
452 | ||
453 | /* | |
454 | * Values for Property list entry flag | |
455 | */ | |
456 | #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry | |
457 | by default */ | |
458 | #define PLE_FLAG_MASK 0x1 /* Valid flag values */ | |
459 | #define PLE_FLAG_ALL -1 /* All flag value */ | |
460 | ||
461 | struct proplistname_args { | |
462 | unsigned int pl_mask; | |
463 | unsigned int pl_numnames; | |
464 | char **pl_names; | |
465 | }; | |
466 | ||
467 | union pl_args { | |
468 | struct setargs { | |
469 | char __user *path; | |
470 | long follow; | |
471 | long nbytes; | |
472 | char __user *buf; | |
473 | } set; | |
474 | struct fsetargs { | |
475 | long fd; | |
476 | long nbytes; | |
477 | char __user *buf; | |
478 | } fset; | |
479 | struct getargs { | |
480 | char __user *path; | |
481 | long follow; | |
482 | struct proplistname_args __user *name_args; | |
483 | long nbytes; | |
484 | char __user *buf; | |
485 | int __user *min_buf_size; | |
486 | } get; | |
487 | struct fgetargs { | |
488 | long fd; | |
489 | struct proplistname_args __user *name_args; | |
490 | long nbytes; | |
491 | char __user *buf; | |
492 | int __user *min_buf_size; | |
493 | } fget; | |
494 | struct delargs { | |
495 | char __user *path; | |
496 | long follow; | |
497 | struct proplistname_args __user *name_args; | |
498 | } del; | |
499 | struct fdelargs { | |
500 | long fd; | |
501 | struct proplistname_args __user *name_args; | |
502 | } fdel; | |
503 | }; | |
504 | ||
505 | enum pl_code { | |
506 | PL_SET = 1, PL_FSET = 2, | |
507 | PL_GET = 3, PL_FGET = 4, | |
508 | PL_DEL = 5, PL_FDEL = 6 | |
509 | }; | |
510 | ||
e5d9a90c IK |
511 | SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code, |
512 | union pl_args __user *, args) | |
1da177e4 LT |
513 | { |
514 | long error; | |
515 | int __user *min_buf_size_ptr; | |
516 | ||
1da177e4 LT |
517 | switch (code) { |
518 | case PL_SET: | |
519 | if (get_user(error, &args->set.nbytes)) | |
520 | error = -EFAULT; | |
521 | break; | |
522 | case PL_FSET: | |
523 | if (get_user(error, &args->fset.nbytes)) | |
524 | error = -EFAULT; | |
525 | break; | |
526 | case PL_GET: | |
527 | error = get_user(min_buf_size_ptr, &args->get.min_buf_size); | |
528 | if (error) | |
529 | break; | |
530 | error = put_user(0, min_buf_size_ptr); | |
531 | break; | |
532 | case PL_FGET: | |
533 | error = get_user(min_buf_size_ptr, &args->fget.min_buf_size); | |
534 | if (error) | |
535 | break; | |
536 | error = put_user(0, min_buf_size_ptr); | |
537 | break; | |
538 | case PL_DEL: | |
539 | case PL_FDEL: | |
540 | error = 0; | |
541 | break; | |
542 | default: | |
543 | error = -EOPNOTSUPP; | |
544 | break; | |
545 | }; | |
1da177e4 LT |
546 | return error; |
547 | } | |
548 | ||
e5d9a90c IK |
549 | SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss, |
550 | struct sigstack __user *, uoss) | |
1da177e4 LT |
551 | { |
552 | unsigned long usp = rdusp(); | |
553 | unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size; | |
554 | unsigned long oss_os = on_sig_stack(usp); | |
555 | int error; | |
556 | ||
557 | if (uss) { | |
558 | void __user *ss_sp; | |
559 | ||
560 | error = -EFAULT; | |
561 | if (get_user(ss_sp, &uss->ss_sp)) | |
562 | goto out; | |
563 | ||
564 | /* If the current stack was set with sigaltstack, don't | |
565 | swap stacks while we are on it. */ | |
566 | error = -EPERM; | |
567 | if (current->sas_ss_sp && on_sig_stack(usp)) | |
568 | goto out; | |
569 | ||
570 | /* Since we don't know the extent of the stack, and we don't | |
571 | track onstack-ness, but rather calculate it, we must | |
572 | presume a size. Ho hum this interface is lossy. */ | |
573 | current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ; | |
574 | current->sas_ss_size = SIGSTKSZ; | |
575 | } | |
576 | ||
577 | if (uoss) { | |
578 | error = -EFAULT; | |
579 | if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)) | |
580 | || __put_user(oss_sp, &uoss->ss_sp) | |
581 | || __put_user(oss_os, &uoss->ss_onstack)) | |
582 | goto out; | |
583 | } | |
584 | ||
585 | error = 0; | |
586 | out: | |
587 | return error; | |
588 | } | |
589 | ||
e5d9a90c | 590 | SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count) |
1da177e4 | 591 | { |
31019075 | 592 | const char *sysinfo_table[] = { |
e9ff3990 SH |
593 | utsname()->sysname, |
594 | utsname()->nodename, | |
595 | utsname()->release, | |
596 | utsname()->version, | |
597 | utsname()->machine, | |
1da177e4 LT |
598 | "alpha", /* instruction set architecture */ |
599 | "dummy", /* hardware serial number */ | |
600 | "dummy", /* hardware manufacturer */ | |
601 | "dummy", /* secure RPC domain */ | |
602 | }; | |
603 | unsigned long offset; | |
31019075 | 604 | const char *res; |
1da177e4 LT |
605 | long len, err = -EINVAL; |
606 | ||
607 | offset = command-1; | |
25c8716c | 608 | if (offset >= ARRAY_SIZE(sysinfo_table)) { |
1da177e4 LT |
609 | /* Digital UNIX has a few unpublished interfaces here */ |
610 | printk("sysinfo(%d)", command); | |
611 | goto out; | |
612 | } | |
25c8716c | 613 | |
1da177e4 LT |
614 | down_read(&uts_sem); |
615 | res = sysinfo_table[offset]; | |
616 | len = strlen(res)+1; | |
617 | if (len > count) | |
618 | len = count; | |
619 | if (copy_to_user(buf, res, len)) | |
620 | err = -EFAULT; | |
621 | else | |
622 | err = 0; | |
623 | up_read(&uts_sem); | |
624 | out: | |
625 | return err; | |
626 | } | |
627 | ||
e5d9a90c IK |
628 | SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer, |
629 | unsigned long, nbytes, int __user *, start, void __user *, arg) | |
1da177e4 LT |
630 | { |
631 | unsigned long w; | |
632 | struct percpu_struct *cpu; | |
633 | ||
634 | switch (op) { | |
635 | case GSI_IEEE_FP_CONTROL: | |
636 | /* Return current software fp control & status bits. */ | |
637 | /* Note that DU doesn't verify available space here. */ | |
638 | ||
639 | w = current_thread_info()->ieee_state & IEEE_SW_MASK; | |
640 | w = swcr_update_status(w, rdfpcr()); | |
641 | if (put_user(w, (unsigned long __user *) buffer)) | |
642 | return -EFAULT; | |
643 | return 0; | |
644 | ||
645 | case GSI_IEEE_STATE_AT_SIGNAL: | |
646 | /* | |
647 | * Not sure anybody will ever use this weird stuff. These | |
648 | * ops can be used (under OSF/1) to set the fpcr that should | |
649 | * be used when a signal handler starts executing. | |
650 | */ | |
651 | break; | |
652 | ||
653 | case GSI_UACPROC: | |
654 | if (nbytes < sizeof(unsigned int)) | |
655 | return -EINVAL; | |
656 | w = (current_thread_info()->flags >> UAC_SHIFT) & UAC_BITMASK; | |
657 | if (put_user(w, (unsigned int __user *)buffer)) | |
658 | return -EFAULT; | |
659 | return 1; | |
660 | ||
661 | case GSI_PROC_TYPE: | |
662 | if (nbytes < sizeof(unsigned long)) | |
663 | return -EINVAL; | |
664 | cpu = (struct percpu_struct*) | |
665 | ((char*)hwrpb + hwrpb->processor_offset); | |
666 | w = cpu->type; | |
667 | if (put_user(w, (unsigned long __user*)buffer)) | |
668 | return -EFAULT; | |
669 | return 1; | |
670 | ||
671 | case GSI_GET_HWRPB: | |
672 | if (nbytes < sizeof(*hwrpb)) | |
673 | return -EINVAL; | |
674 | if (copy_to_user(buffer, hwrpb, nbytes) != 0) | |
675 | return -EFAULT; | |
676 | return 1; | |
677 | ||
678 | default: | |
679 | break; | |
680 | } | |
681 | ||
682 | return -EOPNOTSUPP; | |
683 | } | |
684 | ||
e5d9a90c IK |
685 | SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer, |
686 | unsigned long, nbytes, int __user *, start, void __user *, arg) | |
1da177e4 LT |
687 | { |
688 | switch (op) { | |
689 | case SSI_IEEE_FP_CONTROL: { | |
690 | unsigned long swcr, fpcr; | |
691 | unsigned int *state; | |
692 | ||
693 | /* | |
694 | * Alpha Architecture Handbook 4.7.7.3: | |
695 | * To be fully IEEE compiant, we must track the current IEEE | |
c3a2ddee | 696 | * exception state in software, because spurious bits can be |
1da177e4 LT |
697 | * set in the trap shadow of a software-complete insn. |
698 | */ | |
699 | ||
700 | if (get_user(swcr, (unsigned long __user *)buffer)) | |
701 | return -EFAULT; | |
702 | state = ¤t_thread_info()->ieee_state; | |
703 | ||
704 | /* Update softare trap enable bits. */ | |
705 | *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK); | |
706 | ||
707 | /* Update the real fpcr. */ | |
708 | fpcr = rdfpcr() & FPCR_DYN_MASK; | |
709 | fpcr |= ieee_swcr_to_fpcr(swcr); | |
710 | wrfpcr(fpcr); | |
711 | ||
712 | return 0; | |
713 | } | |
714 | ||
715 | case SSI_IEEE_RAISE_EXCEPTION: { | |
716 | unsigned long exc, swcr, fpcr, fex; | |
717 | unsigned int *state; | |
718 | ||
719 | if (get_user(exc, (unsigned long __user *)buffer)) | |
720 | return -EFAULT; | |
721 | state = ¤t_thread_info()->ieee_state; | |
722 | exc &= IEEE_STATUS_MASK; | |
723 | ||
724 | /* Update softare trap enable bits. */ | |
725 | swcr = (*state & IEEE_SW_MASK) | exc; | |
726 | *state |= exc; | |
727 | ||
728 | /* Update the real fpcr. */ | |
729 | fpcr = rdfpcr(); | |
730 | fpcr |= ieee_swcr_to_fpcr(swcr); | |
731 | wrfpcr(fpcr); | |
732 | ||
733 | /* If any exceptions set by this call, and are unmasked, | |
734 | send a signal. Old exceptions are not signaled. */ | |
735 | fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr; | |
736 | if (fex) { | |
737 | siginfo_t info; | |
738 | int si_code = 0; | |
739 | ||
740 | if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND; | |
741 | if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES; | |
742 | if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND; | |
743 | if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF; | |
744 | if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV; | |
745 | if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV; | |
746 | ||
747 | info.si_signo = SIGFPE; | |
748 | info.si_errno = 0; | |
749 | info.si_code = si_code; | |
750 | info.si_addr = NULL; /* FIXME */ | |
751 | send_sig_info(SIGFPE, &info, current); | |
752 | } | |
753 | return 0; | |
754 | } | |
755 | ||
756 | case SSI_IEEE_STATE_AT_SIGNAL: | |
757 | case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: | |
758 | /* | |
759 | * Not sure anybody will ever use this weird stuff. These | |
760 | * ops can be used (under OSF/1) to set the fpcr that should | |
761 | * be used when a signal handler starts executing. | |
762 | */ | |
763 | break; | |
764 | ||
765 | case SSI_NVPAIRS: { | |
766 | unsigned long v, w, i; | |
767 | unsigned int old, new; | |
768 | ||
769 | for (i = 0; i < nbytes; ++i) { | |
770 | ||
771 | if (get_user(v, 2*i + (unsigned int __user *)buffer)) | |
772 | return -EFAULT; | |
773 | if (get_user(w, 2*i + 1 + (unsigned int __user *)buffer)) | |
774 | return -EFAULT; | |
775 | switch (v) { | |
776 | case SSIN_UACPROC: | |
777 | again: | |
778 | old = current_thread_info()->flags; | |
779 | new = old & ~(UAC_BITMASK << UAC_SHIFT); | |
780 | new = new | (w & UAC_BITMASK) << UAC_SHIFT; | |
781 | if (cmpxchg(¤t_thread_info()->flags, | |
782 | old, new) != old) | |
783 | goto again; | |
784 | break; | |
785 | ||
786 | default: | |
787 | return -EOPNOTSUPP; | |
788 | } | |
789 | } | |
790 | return 0; | |
791 | } | |
792 | ||
793 | default: | |
794 | break; | |
795 | } | |
796 | ||
797 | return -EOPNOTSUPP; | |
798 | } | |
799 | ||
800 | /* Translations due to the fact that OSF's time_t is an int. Which | |
801 | affects all sorts of things, like timeval and itimerval. */ | |
802 | ||
803 | extern struct timezone sys_tz; | |
1da177e4 LT |
804 | |
805 | struct timeval32 | |
806 | { | |
807 | int tv_sec, tv_usec; | |
808 | }; | |
809 | ||
810 | struct itimerval32 | |
811 | { | |
812 | struct timeval32 it_interval; | |
813 | struct timeval32 it_value; | |
814 | }; | |
815 | ||
816 | static inline long | |
817 | get_tv32(struct timeval *o, struct timeval32 __user *i) | |
818 | { | |
819 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
820 | (__get_user(o->tv_sec, &i->tv_sec) | | |
821 | __get_user(o->tv_usec, &i->tv_usec))); | |
822 | } | |
823 | ||
824 | static inline long | |
825 | put_tv32(struct timeval32 __user *o, struct timeval *i) | |
826 | { | |
827 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
828 | (__put_user(i->tv_sec, &o->tv_sec) | | |
829 | __put_user(i->tv_usec, &o->tv_usec))); | |
830 | } | |
831 | ||
832 | static inline long | |
833 | get_it32(struct itimerval *o, struct itimerval32 __user *i) | |
834 | { | |
835 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
836 | (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | | |
837 | __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | | |
838 | __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | | |
839 | __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); | |
840 | } | |
841 | ||
842 | static inline long | |
843 | put_it32(struct itimerval32 __user *o, struct itimerval *i) | |
844 | { | |
845 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
846 | (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | | |
847 | __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | | |
848 | __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | | |
849 | __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); | |
850 | } | |
851 | ||
852 | static inline void | |
853 | jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value) | |
854 | { | |
855 | value->tv_usec = (jiffies % HZ) * (1000000L / HZ); | |
856 | value->tv_sec = jiffies / HZ; | |
857 | } | |
858 | ||
e5d9a90c IK |
859 | SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv, |
860 | struct timezone __user *, tz) | |
1da177e4 LT |
861 | { |
862 | if (tv) { | |
863 | struct timeval ktv; | |
864 | do_gettimeofday(&ktv); | |
865 | if (put_tv32(tv, &ktv)) | |
866 | return -EFAULT; | |
867 | } | |
868 | if (tz) { | |
869 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) | |
870 | return -EFAULT; | |
871 | } | |
872 | return 0; | |
873 | } | |
874 | ||
e5d9a90c IK |
875 | SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv, |
876 | struct timezone __user *, tz) | |
1da177e4 LT |
877 | { |
878 | struct timespec kts; | |
879 | struct timezone ktz; | |
880 | ||
881 | if (tv) { | |
882 | if (get_tv32((struct timeval *)&kts, tv)) | |
883 | return -EFAULT; | |
884 | } | |
885 | if (tz) { | |
886 | if (copy_from_user(&ktz, tz, sizeof(*tz))) | |
887 | return -EFAULT; | |
888 | } | |
889 | ||
890 | kts.tv_nsec *= 1000; | |
891 | ||
892 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); | |
893 | } | |
894 | ||
e5d9a90c | 895 | SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it) |
1da177e4 LT |
896 | { |
897 | struct itimerval kit; | |
898 | int error; | |
899 | ||
900 | error = do_getitimer(which, &kit); | |
901 | if (!error && put_it32(it, &kit)) | |
902 | error = -EFAULT; | |
903 | ||
904 | return error; | |
905 | } | |
906 | ||
e5d9a90c IK |
907 | SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in, |
908 | struct itimerval32 __user *, out) | |
1da177e4 LT |
909 | { |
910 | struct itimerval kin, kout; | |
911 | int error; | |
912 | ||
913 | if (in) { | |
914 | if (get_it32(&kin, in)) | |
915 | return -EFAULT; | |
916 | } else | |
917 | memset(&kin, 0, sizeof(kin)); | |
918 | ||
919 | error = do_setitimer(which, &kin, out ? &kout : NULL); | |
920 | if (error || !out) | |
921 | return error; | |
922 | ||
923 | if (put_it32(out, &kout)) | |
924 | return -EFAULT; | |
925 | ||
926 | return 0; | |
927 | ||
928 | } | |
929 | ||
c7887325 | 930 | SYSCALL_DEFINE2(osf_utimes, const char __user *, filename, |
e5d9a90c | 931 | struct timeval32 __user *, tvs) |
1da177e4 | 932 | { |
1c710c89 | 933 | struct timespec tv[2]; |
1da177e4 LT |
934 | |
935 | if (tvs) { | |
1c710c89 | 936 | struct timeval ktvs[2]; |
1da177e4 LT |
937 | if (get_tv32(&ktvs[0], &tvs[0]) || |
938 | get_tv32(&ktvs[1], &tvs[1])) | |
939 | return -EFAULT; | |
1c710c89 UD |
940 | |
941 | if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 || | |
942 | ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000) | |
943 | return -EINVAL; | |
944 | ||
945 | tv[0].tv_sec = ktvs[0].tv_sec; | |
946 | tv[0].tv_nsec = 1000 * ktvs[0].tv_usec; | |
947 | tv[1].tv_sec = ktvs[1].tv_sec; | |
948 | tv[1].tv_nsec = 1000 * ktvs[1].tv_usec; | |
1da177e4 LT |
949 | } |
950 | ||
1c710c89 | 951 | return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0); |
1da177e4 LT |
952 | } |
953 | ||
954 | #define MAX_SELECT_SECONDS \ | |
955 | ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1) | |
956 | ||
e5d9a90c IK |
957 | SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp, |
958 | fd_set __user *, exp, struct timeval32 __user *, tvp) | |
1da177e4 | 959 | { |
14e2acd8 | 960 | struct timespec end_time, *to = NULL; |
1da177e4 LT |
961 | if (tvp) { |
962 | time_t sec, usec; | |
963 | ||
14e2acd8 AV |
964 | to = &end_time; |
965 | ||
1da177e4 LT |
966 | if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp)) |
967 | || __get_user(sec, &tvp->tv_sec) | |
968 | || __get_user(usec, &tvp->tv_usec)) { | |
a2dcb44c | 969 | return -EFAULT; |
1da177e4 LT |
970 | } |
971 | ||
972 | if (sec < 0 || usec < 0) | |
a2dcb44c | 973 | return -EINVAL; |
1da177e4 | 974 | |
14e2acd8 AV |
975 | if (poll_select_set_timeout(to, sec, usec * NSEC_PER_USEC)) |
976 | return -EINVAL; | |
977 | ||
1da177e4 LT |
978 | } |
979 | ||
1da177e4 | 980 | /* OSF does not copy back the remaining time. */ |
14e2acd8 | 981 | return core_sys_select(n, inp, outp, exp, to); |
1da177e4 LT |
982 | } |
983 | ||
984 | struct rusage32 { | |
985 | struct timeval32 ru_utime; /* user time used */ | |
986 | struct timeval32 ru_stime; /* system time used */ | |
987 | long ru_maxrss; /* maximum resident set size */ | |
988 | long ru_ixrss; /* integral shared memory size */ | |
989 | long ru_idrss; /* integral unshared data size */ | |
990 | long ru_isrss; /* integral unshared stack size */ | |
991 | long ru_minflt; /* page reclaims */ | |
992 | long ru_majflt; /* page faults */ | |
993 | long ru_nswap; /* swaps */ | |
994 | long ru_inblock; /* block input operations */ | |
995 | long ru_oublock; /* block output operations */ | |
996 | long ru_msgsnd; /* messages sent */ | |
997 | long ru_msgrcv; /* messages received */ | |
998 | long ru_nsignals; /* signals received */ | |
999 | long ru_nvcsw; /* voluntary context switches */ | |
1000 | long ru_nivcsw; /* involuntary " */ | |
1001 | }; | |
1002 | ||
e5d9a90c | 1003 | SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru) |
1da177e4 LT |
1004 | { |
1005 | struct rusage32 r; | |
1006 | ||
1007 | if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) | |
1008 | return -EINVAL; | |
1009 | ||
1010 | memset(&r, 0, sizeof(r)); | |
1011 | switch (who) { | |
1012 | case RUSAGE_SELF: | |
1013 | jiffies_to_timeval32(current->utime, &r.ru_utime); | |
1014 | jiffies_to_timeval32(current->stime, &r.ru_stime); | |
1015 | r.ru_minflt = current->min_flt; | |
1016 | r.ru_majflt = current->maj_flt; | |
1017 | break; | |
1018 | case RUSAGE_CHILDREN: | |
1019 | jiffies_to_timeval32(current->signal->cutime, &r.ru_utime); | |
1020 | jiffies_to_timeval32(current->signal->cstime, &r.ru_stime); | |
1021 | r.ru_minflt = current->signal->cmin_flt; | |
1022 | r.ru_majflt = current->signal->cmaj_flt; | |
1023 | break; | |
1024 | } | |
1025 | ||
1026 | return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0; | |
1027 | } | |
1028 | ||
e5d9a90c IK |
1029 | SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options, |
1030 | struct rusage32 __user *, ur) | |
1da177e4 LT |
1031 | { |
1032 | struct rusage r; | |
1033 | long ret, err; | |
1034 | mm_segment_t old_fs; | |
1035 | ||
1036 | if (!ur) | |
1037 | return sys_wait4(pid, ustatus, options, NULL); | |
1038 | ||
1039 | old_fs = get_fs(); | |
1040 | ||
1041 | set_fs (KERNEL_DS); | |
1042 | ret = sys_wait4(pid, ustatus, options, (struct rusage __user *) &r); | |
1043 | set_fs (old_fs); | |
1044 | ||
1045 | if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur))) | |
1046 | return -EFAULT; | |
1047 | ||
1048 | err = 0; | |
1049 | err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec); | |
1050 | err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec); | |
1051 | err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec); | |
1052 | err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec); | |
1053 | err |= __put_user(r.ru_maxrss, &ur->ru_maxrss); | |
1054 | err |= __put_user(r.ru_ixrss, &ur->ru_ixrss); | |
1055 | err |= __put_user(r.ru_idrss, &ur->ru_idrss); | |
1056 | err |= __put_user(r.ru_isrss, &ur->ru_isrss); | |
1057 | err |= __put_user(r.ru_minflt, &ur->ru_minflt); | |
1058 | err |= __put_user(r.ru_majflt, &ur->ru_majflt); | |
1059 | err |= __put_user(r.ru_nswap, &ur->ru_nswap); | |
1060 | err |= __put_user(r.ru_inblock, &ur->ru_inblock); | |
1061 | err |= __put_user(r.ru_oublock, &ur->ru_oublock); | |
1062 | err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd); | |
1063 | err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv); | |
1064 | err |= __put_user(r.ru_nsignals, &ur->ru_nsignals); | |
1065 | err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw); | |
1066 | err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw); | |
1067 | ||
1068 | return err ? err : ret; | |
1069 | } | |
1070 | ||
1071 | /* | |
1072 | * I don't know what the parameters are: the first one | |
1073 | * seems to be a timeval pointer, and I suspect the second | |
1074 | * one is the time remaining.. Ho humm.. No documentation. | |
1075 | */ | |
e5d9a90c IK |
1076 | SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep, |
1077 | struct timeval32 __user *, remain) | |
1da177e4 LT |
1078 | { |
1079 | struct timeval tmp; | |
1080 | unsigned long ticks; | |
1081 | ||
1082 | if (get_tv32(&tmp, sleep)) | |
1083 | goto fault; | |
1084 | ||
24d568ed | 1085 | ticks = timeval_to_jiffies(&tmp); |
1da177e4 | 1086 | |
20c6abd1 | 1087 | ticks = schedule_timeout_interruptible(ticks); |
1da177e4 LT |
1088 | |
1089 | if (remain) { | |
24d568ed | 1090 | jiffies_to_timeval(ticks, &tmp); |
1da177e4 LT |
1091 | if (put_tv32(remain, &tmp)) |
1092 | goto fault; | |
1093 | } | |
1094 | ||
1095 | return 0; | |
1096 | fault: | |
1097 | return -EFAULT; | |
1098 | } | |
1099 | ||
1100 | ||
1101 | struct timex32 { | |
1102 | unsigned int modes; /* mode selector */ | |
1103 | long offset; /* time offset (usec) */ | |
1104 | long freq; /* frequency offset (scaled ppm) */ | |
1105 | long maxerror; /* maximum error (usec) */ | |
1106 | long esterror; /* estimated error (usec) */ | |
1107 | int status; /* clock command/status */ | |
1108 | long constant; /* pll time constant */ | |
1109 | long precision; /* clock precision (usec) (read only) */ | |
1110 | long tolerance; /* clock frequency tolerance (ppm) | |
1111 | * (read only) | |
1112 | */ | |
1113 | struct timeval32 time; /* (read only) */ | |
1114 | long tick; /* (modified) usecs between clock ticks */ | |
1115 | ||
1116 | long ppsfreq; /* pps frequency (scaled ppm) (ro) */ | |
1117 | long jitter; /* pps jitter (us) (ro) */ | |
1118 | int shift; /* interval duration (s) (shift) (ro) */ | |
1119 | long stabil; /* pps stability (scaled ppm) (ro) */ | |
1120 | long jitcnt; /* jitter limit exceeded (ro) */ | |
1121 | long calcnt; /* calibration intervals (ro) */ | |
1122 | long errcnt; /* calibration errors (ro) */ | |
1123 | long stbcnt; /* stability limit exceeded (ro) */ | |
1124 | ||
1125 | int :32; int :32; int :32; int :32; | |
1126 | int :32; int :32; int :32; int :32; | |
1127 | int :32; int :32; int :32; int :32; | |
1128 | }; | |
1129 | ||
e5d9a90c | 1130 | SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p) |
1da177e4 LT |
1131 | { |
1132 | struct timex txc; | |
1133 | int ret; | |
1134 | ||
1135 | /* copy relevant bits of struct timex. */ | |
1136 | if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) || | |
1137 | copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) - | |
1138 | offsetof(struct timex32, time))) | |
1139 | return -EFAULT; | |
1140 | ||
1141 | ret = do_adjtimex(&txc); | |
1142 | if (ret < 0) | |
1143 | return ret; | |
1144 | ||
1145 | /* copy back to timex32 */ | |
1146 | if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) || | |
1147 | (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) - | |
1148 | offsetof(struct timex32, tick))) || | |
1149 | (put_tv32(&txc_p->time, &txc.time))) | |
1150 | return -EFAULT; | |
1151 | ||
1152 | return ret; | |
1153 | } | |
1154 | ||
1155 | /* Get an address range which is currently unmapped. Similar to the | |
1156 | generic version except that we know how to honor ADDR_LIMIT_32BIT. */ | |
1157 | ||
1158 | static unsigned long | |
1159 | arch_get_unmapped_area_1(unsigned long addr, unsigned long len, | |
1160 | unsigned long limit) | |
1161 | { | |
1162 | struct vm_area_struct *vma = find_vma(current->mm, addr); | |
1163 | ||
1164 | while (1) { | |
1165 | /* At this point: (!vma || addr < vma->vm_end). */ | |
1166 | if (limit - len < addr) | |
1167 | return -ENOMEM; | |
1168 | if (!vma || addr + len <= vma->vm_start) | |
1169 | return addr; | |
1170 | addr = vma->vm_end; | |
1171 | vma = vma->vm_next; | |
1172 | } | |
1173 | } | |
1174 | ||
1175 | unsigned long | |
1176 | arch_get_unmapped_area(struct file *filp, unsigned long addr, | |
1177 | unsigned long len, unsigned long pgoff, | |
1178 | unsigned long flags) | |
1179 | { | |
1180 | unsigned long limit; | |
1181 | ||
1182 | /* "32 bit" actually means 31 bit, since pointers sign extend. */ | |
1183 | if (current->personality & ADDR_LIMIT_32BIT) | |
1184 | limit = 0x80000000; | |
1185 | else | |
1186 | limit = TASK_SIZE; | |
1187 | ||
1188 | if (len > limit) | |
1189 | return -ENOMEM; | |
1190 | ||
4b87b3b2 BH |
1191 | if (flags & MAP_FIXED) |
1192 | return addr; | |
1193 | ||
1da177e4 LT |
1194 | /* First, see if the given suggestion fits. |
1195 | ||
1196 | The OSF/1 loader (/sbin/loader) relies on us returning an | |
1197 | address larger than the requested if one exists, which is | |
1198 | a terribly broken way to program. | |
1199 | ||
1200 | That said, I can see the use in being able to suggest not | |
1201 | merely specific addresses, but regions of memory -- perhaps | |
1202 | this feature should be incorporated into all ports? */ | |
1203 | ||
1204 | if (addr) { | |
1205 | addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); | |
1206 | if (addr != (unsigned long) -ENOMEM) | |
1207 | return addr; | |
1208 | } | |
1209 | ||
1210 | /* Next, try allocating at TASK_UNMAPPED_BASE. */ | |
1211 | addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), | |
1212 | len, limit); | |
1213 | if (addr != (unsigned long) -ENOMEM) | |
1214 | return addr; | |
1215 | ||
1216 | /* Finally, try allocating in low memory. */ | |
1217 | addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit); | |
1218 | ||
1219 | return addr; | |
1220 | } | |
1221 | ||
1222 | #ifdef CONFIG_OSF4_COMPAT | |
1223 | ||
1224 | /* Clear top 32 bits of iov_len in the user's buffer for | |
1225 | compatibility with old versions of OSF/1 where iov_len | |
1226 | was defined as int. */ | |
1227 | static int | |
1228 | osf_fix_iov_len(const struct iovec __user *iov, unsigned long count) | |
1229 | { | |
1230 | unsigned long i; | |
1231 | ||
1232 | for (i = 0 ; i < count ; i++) { | |
1233 | int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1; | |
1234 | ||
1235 | if (put_user(0, iov_len_high)) | |
1236 | return -EFAULT; | |
1237 | } | |
1238 | return 0; | |
1239 | } | |
1240 | ||
e5d9a90c IK |
1241 | SYSCALL_DEFINE3(osf_readv, unsigned long, fd, |
1242 | const struct iovec __user *, vector, unsigned long, count) | |
1da177e4 LT |
1243 | { |
1244 | if (unlikely(personality(current->personality) == PER_OSF4)) | |
1245 | if (osf_fix_iov_len(vector, count)) | |
1246 | return -EFAULT; | |
1247 | return sys_readv(fd, vector, count); | |
1248 | } | |
1249 | ||
e5d9a90c IK |
1250 | SYSCALL_DEFINE3(osf_writev, unsigned long, fd, |
1251 | const struct iovec __user *, vector, unsigned long, count) | |
1da177e4 LT |
1252 | { |
1253 | if (unlikely(personality(current->personality) == PER_OSF4)) | |
1254 | if (osf_fix_iov_len(vector, count)) | |
1255 | return -EFAULT; | |
1256 | return sys_writev(fd, vector, count); | |
1257 | } | |
1258 | ||
1259 | #endif |