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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> | |
1da177e4 | 43 | #include <asm/sysinfo.h> |
2df7a7d1 | 44 | #include <asm/thread_info.h> |
1da177e4 LT |
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 | ||
7a8bb98c MR |
194 | struct osf_stat { |
195 | int st_dev; | |
196 | int st_pad1; | |
197 | unsigned st_mode; | |
198 | unsigned short st_nlink; | |
199 | short st_nlink_reserved; | |
200 | unsigned st_uid; | |
201 | unsigned st_gid; | |
202 | int st_rdev; | |
203 | int st_ldev; | |
204 | long st_size; | |
205 | int st_pad2; | |
206 | int st_uatime; | |
207 | int st_pad3; | |
208 | int st_umtime; | |
209 | int st_pad4; | |
210 | int st_uctime; | |
211 | int st_pad5; | |
212 | int st_pad6; | |
213 | unsigned st_flags; | |
214 | unsigned st_gen; | |
215 | long st_spare[4]; | |
216 | unsigned st_ino; | |
217 | int st_ino_reserved; | |
218 | int st_atime; | |
219 | int st_atime_reserved; | |
220 | int st_mtime; | |
221 | int st_mtime_reserved; | |
222 | int st_ctime; | |
223 | int st_ctime_reserved; | |
224 | long st_blksize; | |
225 | long st_blocks; | |
226 | }; | |
1da177e4 LT |
227 | |
228 | /* | |
229 | * The OSF/1 statfs structure is much larger, but this should | |
230 | * match the beginning, at least. | |
231 | */ | |
232 | struct osf_statfs { | |
233 | short f_type; | |
234 | short f_flags; | |
235 | int f_fsize; | |
236 | int f_bsize; | |
237 | int f_blocks; | |
238 | int f_bfree; | |
239 | int f_bavail; | |
240 | int f_files; | |
241 | int f_ffree; | |
242 | __kernel_fsid_t f_fsid; | |
243 | }; | |
244 | ||
7a8bb98c MR |
245 | struct osf_statfs64 { |
246 | short f_type; | |
247 | short f_flags; | |
248 | int f_pad1; | |
249 | int f_pad2; | |
250 | int f_pad3; | |
251 | int f_pad4; | |
252 | int f_pad5; | |
253 | int f_pad6; | |
254 | int f_pad7; | |
255 | __kernel_fsid_t f_fsid; | |
256 | u_short f_namemax; | |
257 | short f_reserved1; | |
258 | int f_spare[8]; | |
259 | char f_pad8[90]; | |
260 | char f_pad9[90]; | |
261 | long mount_info[10]; | |
262 | u_long f_flags2; | |
263 | long f_spare2[14]; | |
264 | long f_fsize; | |
265 | long f_bsize; | |
266 | long f_blocks; | |
267 | long f_bfree; | |
268 | long f_bavail; | |
269 | long f_files; | |
270 | long f_ffree; | |
271 | }; | |
272 | ||
273 | static int | |
274 | linux_to_osf_stat(struct kstat *lstat, struct osf_stat __user *osf_stat) | |
275 | { | |
276 | struct osf_stat tmp = { 0 }; | |
277 | ||
278 | tmp.st_dev = lstat->dev; | |
279 | tmp.st_mode = lstat->mode; | |
280 | tmp.st_nlink = lstat->nlink; | |
281 | tmp.st_uid = lstat->uid; | |
282 | tmp.st_gid = lstat->gid; | |
283 | tmp.st_rdev = lstat->rdev; | |
284 | tmp.st_ldev = lstat->rdev; | |
285 | tmp.st_size = lstat->size; | |
286 | tmp.st_uatime = lstat->atime.tv_nsec / 1000; | |
287 | tmp.st_umtime = lstat->mtime.tv_nsec / 1000; | |
288 | tmp.st_uctime = lstat->ctime.tv_nsec / 1000; | |
289 | tmp.st_ino = lstat->ino; | |
290 | tmp.st_atime = lstat->atime.tv_sec; | |
291 | tmp.st_mtime = lstat->mtime.tv_sec; | |
292 | tmp.st_ctime = lstat->ctime.tv_sec; | |
293 | tmp.st_blksize = lstat->blksize; | |
294 | tmp.st_blocks = lstat->blocks; | |
295 | ||
296 | return copy_to_user(osf_stat, &tmp, sizeof(tmp)) ? -EFAULT : 0; | |
297 | } | |
298 | ||
1da177e4 LT |
299 | static int |
300 | linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat, | |
301 | unsigned long bufsiz) | |
302 | { | |
303 | struct osf_statfs tmp_stat; | |
304 | ||
305 | tmp_stat.f_type = linux_stat->f_type; | |
306 | tmp_stat.f_flags = 0; /* mount flags */ | |
307 | tmp_stat.f_fsize = linux_stat->f_frsize; | |
308 | tmp_stat.f_bsize = linux_stat->f_bsize; | |
309 | tmp_stat.f_blocks = linux_stat->f_blocks; | |
310 | tmp_stat.f_bfree = linux_stat->f_bfree; | |
311 | tmp_stat.f_bavail = linux_stat->f_bavail; | |
312 | tmp_stat.f_files = linux_stat->f_files; | |
313 | tmp_stat.f_ffree = linux_stat->f_ffree; | |
314 | tmp_stat.f_fsid = linux_stat->f_fsid; | |
315 | if (bufsiz > sizeof(tmp_stat)) | |
316 | bufsiz = sizeof(tmp_stat); | |
317 | return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; | |
318 | } | |
319 | ||
7a8bb98c MR |
320 | static int |
321 | linux_to_osf_statfs64(struct kstatfs *linux_stat, struct osf_statfs64 __user *osf_stat, | |
322 | unsigned long bufsiz) | |
323 | { | |
324 | struct osf_statfs64 tmp_stat = { 0 }; | |
325 | ||
326 | tmp_stat.f_type = linux_stat->f_type; | |
327 | tmp_stat.f_fsize = linux_stat->f_frsize; | |
328 | tmp_stat.f_bsize = linux_stat->f_bsize; | |
329 | tmp_stat.f_blocks = linux_stat->f_blocks; | |
330 | tmp_stat.f_bfree = linux_stat->f_bfree; | |
331 | tmp_stat.f_bavail = linux_stat->f_bavail; | |
332 | tmp_stat.f_files = linux_stat->f_files; | |
333 | tmp_stat.f_ffree = linux_stat->f_ffree; | |
334 | tmp_stat.f_fsid = linux_stat->f_fsid; | |
335 | if (bufsiz > sizeof(tmp_stat)) | |
336 | bufsiz = sizeof(tmp_stat); | |
337 | return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; | |
338 | } | |
339 | ||
c8b91acc AV |
340 | SYSCALL_DEFINE3(osf_statfs, const char __user *, pathname, |
341 | struct osf_statfs __user *, buffer, unsigned long, bufsiz) | |
1da177e4 LT |
342 | { |
343 | struct kstatfs linux_stat; | |
c8b91acc | 344 | int error = user_statfs(pathname, &linux_stat); |
1da177e4 LT |
345 | if (!error) |
346 | error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); | |
347 | return error; | |
348 | } | |
349 | ||
7a8bb98c MR |
350 | SYSCALL_DEFINE2(osf_stat, char __user *, name, struct osf_stat __user *, buf) |
351 | { | |
352 | struct kstat stat; | |
353 | int error; | |
354 | ||
355 | error = vfs_stat(name, &stat); | |
356 | if (error) | |
357 | return error; | |
358 | ||
359 | return linux_to_osf_stat(&stat, buf); | |
360 | } | |
361 | ||
362 | SYSCALL_DEFINE2(osf_lstat, char __user *, name, struct osf_stat __user *, buf) | |
363 | { | |
364 | struct kstat stat; | |
365 | int error; | |
366 | ||
367 | error = vfs_lstat(name, &stat); | |
368 | if (error) | |
369 | return error; | |
370 | ||
371 | return linux_to_osf_stat(&stat, buf); | |
372 | } | |
373 | ||
374 | SYSCALL_DEFINE2(osf_fstat, int, fd, struct osf_stat __user *, buf) | |
375 | { | |
376 | struct kstat stat; | |
377 | int error; | |
378 | ||
379 | error = vfs_fstat(fd, &stat); | |
380 | if (error) | |
381 | return error; | |
382 | ||
383 | return linux_to_osf_stat(&stat, buf); | |
384 | } | |
385 | ||
e5d9a90c IK |
386 | SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd, |
387 | struct osf_statfs __user *, buffer, unsigned long, bufsiz) | |
1da177e4 | 388 | { |
c8b91acc AV |
389 | struct kstatfs linux_stat; |
390 | int error = fd_statfs(fd, &linux_stat); | |
391 | if (!error) | |
392 | error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); | |
393 | return error; | |
1da177e4 LT |
394 | } |
395 | ||
7a8bb98c MR |
396 | SYSCALL_DEFINE3(osf_statfs64, char __user *, pathname, |
397 | struct osf_statfs64 __user *, buffer, unsigned long, bufsiz) | |
398 | { | |
399 | struct kstatfs linux_stat; | |
400 | int error = user_statfs(pathname, &linux_stat); | |
401 | if (!error) | |
402 | error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz); | |
403 | return error; | |
404 | } | |
405 | ||
406 | SYSCALL_DEFINE3(osf_fstatfs64, unsigned long, fd, | |
407 | struct osf_statfs64 __user *, buffer, unsigned long, bufsiz) | |
408 | { | |
409 | struct kstatfs linux_stat; | |
410 | int error = fd_statfs(fd, &linux_stat); | |
411 | if (!error) | |
412 | error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz); | |
413 | return error; | |
414 | } | |
415 | ||
1da177e4 LT |
416 | /* |
417 | * Uhh.. OSF/1 mount parameters aren't exactly obvious.. | |
418 | * | |
419 | * Although to be frank, neither are the native Linux/i386 ones.. | |
420 | */ | |
421 | struct ufs_args { | |
422 | char __user *devname; | |
423 | int flags; | |
424 | uid_t exroot; | |
425 | }; | |
426 | ||
427 | struct cdfs_args { | |
428 | char __user *devname; | |
429 | int flags; | |
430 | uid_t exroot; | |
431 | ||
432 | /* This has lots more here, which Linux handles with the option block | |
433 | but I'm too lazy to do the translation into ASCII. */ | |
434 | }; | |
435 | ||
436 | struct procfs_args { | |
437 | char __user *devname; | |
438 | int flags; | |
439 | uid_t exroot; | |
440 | }; | |
441 | ||
442 | /* | |
443 | * We can't actually handle ufs yet, so we translate UFS mounts to | |
444 | * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS | |
445 | * layout is so braindead it's a major headache doing it. | |
446 | * | |
447 | * Just how long ago was it written? OTOH our UFS driver may be still | |
448 | * unhappy with OSF UFS. [CHECKME] | |
449 | */ | |
450 | static int | |
451 | osf_ufs_mount(char *dirname, struct ufs_args __user *args, int flags) | |
452 | { | |
453 | int retval; | |
454 | struct cdfs_args tmp; | |
455 | char *devname; | |
456 | ||
457 | retval = -EFAULT; | |
458 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
459 | goto out; | |
460 | devname = getname(tmp.devname); | |
461 | retval = PTR_ERR(devname); | |
462 | if (IS_ERR(devname)) | |
463 | goto out; | |
464 | retval = do_mount(devname, dirname, "ext2", flags, NULL); | |
465 | putname(devname); | |
466 | out: | |
467 | return retval; | |
468 | } | |
469 | ||
470 | static int | |
471 | osf_cdfs_mount(char *dirname, struct cdfs_args __user *args, int flags) | |
472 | { | |
473 | int retval; | |
474 | struct cdfs_args tmp; | |
475 | char *devname; | |
476 | ||
477 | retval = -EFAULT; | |
478 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
479 | goto out; | |
480 | devname = getname(tmp.devname); | |
481 | retval = PTR_ERR(devname); | |
482 | if (IS_ERR(devname)) | |
483 | goto out; | |
484 | retval = do_mount(devname, dirname, "iso9660", flags, NULL); | |
485 | putname(devname); | |
486 | out: | |
487 | return retval; | |
488 | } | |
489 | ||
490 | static int | |
491 | osf_procfs_mount(char *dirname, struct procfs_args __user *args, int flags) | |
492 | { | |
493 | struct procfs_args tmp; | |
494 | ||
495 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
496 | return -EFAULT; | |
497 | ||
498 | return do_mount("", dirname, "proc", flags, NULL); | |
499 | } | |
500 | ||
c7887325 | 501 | SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path, |
e5d9a90c | 502 | int, flag, void __user *, data) |
1da177e4 | 503 | { |
77079dbe | 504 | int retval; |
1da177e4 LT |
505 | char *name; |
506 | ||
1da177e4 LT |
507 | name = getname(path); |
508 | retval = PTR_ERR(name); | |
509 | if (IS_ERR(name)) | |
510 | goto out; | |
511 | switch (typenr) { | |
512 | case 1: | |
513 | retval = osf_ufs_mount(name, data, flag); | |
514 | break; | |
515 | case 6: | |
516 | retval = osf_cdfs_mount(name, data, flag); | |
517 | break; | |
518 | case 9: | |
519 | retval = osf_procfs_mount(name, data, flag); | |
520 | break; | |
521 | default: | |
77079dbe | 522 | retval = -EINVAL; |
1da177e4 LT |
523 | printk("osf_mount(%ld, %x)\n", typenr, flag); |
524 | } | |
525 | putname(name); | |
526 | out: | |
1da177e4 LT |
527 | return retval; |
528 | } | |
529 | ||
e5d9a90c | 530 | SYSCALL_DEFINE1(osf_utsname, char __user *, name) |
1da177e4 LT |
531 | { |
532 | int error; | |
533 | ||
534 | down_read(&uts_sem); | |
535 | error = -EFAULT; | |
e9ff3990 | 536 | if (copy_to_user(name + 0, utsname()->sysname, 32)) |
1da177e4 | 537 | goto out; |
e9ff3990 | 538 | if (copy_to_user(name + 32, utsname()->nodename, 32)) |
1da177e4 | 539 | goto out; |
e9ff3990 | 540 | if (copy_to_user(name + 64, utsname()->release, 32)) |
1da177e4 | 541 | goto out; |
e9ff3990 | 542 | if (copy_to_user(name + 96, utsname()->version, 32)) |
1da177e4 | 543 | goto out; |
e9ff3990 | 544 | if (copy_to_user(name + 128, utsname()->machine, 32)) |
1da177e4 LT |
545 | goto out; |
546 | ||
547 | error = 0; | |
548 | out: | |
549 | up_read(&uts_sem); | |
550 | return error; | |
551 | } | |
552 | ||
e5d9a90c | 553 | SYSCALL_DEFINE0(getpagesize) |
1da177e4 LT |
554 | { |
555 | return PAGE_SIZE; | |
556 | } | |
557 | ||
e5d9a90c | 558 | SYSCALL_DEFINE0(getdtablesize) |
1da177e4 | 559 | { |
9cfe015a | 560 | return sysctl_nr_open; |
1da177e4 LT |
561 | } |
562 | ||
563 | /* | |
564 | * For compatibility with OSF/1 only. Use utsname(2) instead. | |
565 | */ | |
e5d9a90c | 566 | SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen) |
1da177e4 LT |
567 | { |
568 | unsigned len; | |
569 | int i; | |
570 | ||
571 | if (!access_ok(VERIFY_WRITE, name, namelen)) | |
572 | return -EFAULT; | |
573 | ||
574 | len = namelen; | |
21c5977a | 575 | if (len > 32) |
1da177e4 LT |
576 | len = 32; |
577 | ||
578 | down_read(&uts_sem); | |
579 | for (i = 0; i < len; ++i) { | |
e9ff3990 SH |
580 | __put_user(utsname()->domainname[i], name + i); |
581 | if (utsname()->domainname[i] == '\0') | |
1da177e4 LT |
582 | break; |
583 | } | |
584 | up_read(&uts_sem); | |
585 | ||
586 | return 0; | |
587 | } | |
588 | ||
1da177e4 LT |
589 | /* |
590 | * The following stuff should move into a header file should it ever | |
591 | * be labeled "officially supported." Right now, there is just enough | |
592 | * support to avoid applications (such as tar) printing error | |
593 | * messages. The attributes are not really implemented. | |
594 | */ | |
595 | ||
596 | /* | |
597 | * Values for Property list entry flag | |
598 | */ | |
599 | #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry | |
600 | by default */ | |
601 | #define PLE_FLAG_MASK 0x1 /* Valid flag values */ | |
602 | #define PLE_FLAG_ALL -1 /* All flag value */ | |
603 | ||
604 | struct proplistname_args { | |
605 | unsigned int pl_mask; | |
606 | unsigned int pl_numnames; | |
607 | char **pl_names; | |
608 | }; | |
609 | ||
610 | union pl_args { | |
611 | struct setargs { | |
612 | char __user *path; | |
613 | long follow; | |
614 | long nbytes; | |
615 | char __user *buf; | |
616 | } set; | |
617 | struct fsetargs { | |
618 | long fd; | |
619 | long nbytes; | |
620 | char __user *buf; | |
621 | } fset; | |
622 | struct getargs { | |
623 | char __user *path; | |
624 | long follow; | |
625 | struct proplistname_args __user *name_args; | |
626 | long nbytes; | |
627 | char __user *buf; | |
628 | int __user *min_buf_size; | |
629 | } get; | |
630 | struct fgetargs { | |
631 | long fd; | |
632 | struct proplistname_args __user *name_args; | |
633 | long nbytes; | |
634 | char __user *buf; | |
635 | int __user *min_buf_size; | |
636 | } fget; | |
637 | struct delargs { | |
638 | char __user *path; | |
639 | long follow; | |
640 | struct proplistname_args __user *name_args; | |
641 | } del; | |
642 | struct fdelargs { | |
643 | long fd; | |
644 | struct proplistname_args __user *name_args; | |
645 | } fdel; | |
646 | }; | |
647 | ||
648 | enum pl_code { | |
649 | PL_SET = 1, PL_FSET = 2, | |
650 | PL_GET = 3, PL_FGET = 4, | |
651 | PL_DEL = 5, PL_FDEL = 6 | |
652 | }; | |
653 | ||
e5d9a90c IK |
654 | SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code, |
655 | union pl_args __user *, args) | |
1da177e4 LT |
656 | { |
657 | long error; | |
658 | int __user *min_buf_size_ptr; | |
659 | ||
1da177e4 LT |
660 | switch (code) { |
661 | case PL_SET: | |
662 | if (get_user(error, &args->set.nbytes)) | |
663 | error = -EFAULT; | |
664 | break; | |
665 | case PL_FSET: | |
666 | if (get_user(error, &args->fset.nbytes)) | |
667 | error = -EFAULT; | |
668 | break; | |
669 | case PL_GET: | |
670 | error = get_user(min_buf_size_ptr, &args->get.min_buf_size); | |
671 | if (error) | |
672 | break; | |
673 | error = put_user(0, min_buf_size_ptr); | |
674 | break; | |
675 | case PL_FGET: | |
676 | error = get_user(min_buf_size_ptr, &args->fget.min_buf_size); | |
677 | if (error) | |
678 | break; | |
679 | error = put_user(0, min_buf_size_ptr); | |
680 | break; | |
681 | case PL_DEL: | |
682 | case PL_FDEL: | |
683 | error = 0; | |
684 | break; | |
685 | default: | |
686 | error = -EOPNOTSUPP; | |
687 | break; | |
688 | }; | |
1da177e4 LT |
689 | return error; |
690 | } | |
691 | ||
e5d9a90c IK |
692 | SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss, |
693 | struct sigstack __user *, uoss) | |
1da177e4 LT |
694 | { |
695 | unsigned long usp = rdusp(); | |
696 | unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size; | |
697 | unsigned long oss_os = on_sig_stack(usp); | |
698 | int error; | |
699 | ||
700 | if (uss) { | |
701 | void __user *ss_sp; | |
702 | ||
703 | error = -EFAULT; | |
704 | if (get_user(ss_sp, &uss->ss_sp)) | |
705 | goto out; | |
706 | ||
707 | /* If the current stack was set with sigaltstack, don't | |
708 | swap stacks while we are on it. */ | |
709 | error = -EPERM; | |
710 | if (current->sas_ss_sp && on_sig_stack(usp)) | |
711 | goto out; | |
712 | ||
713 | /* Since we don't know the extent of the stack, and we don't | |
714 | track onstack-ness, but rather calculate it, we must | |
715 | presume a size. Ho hum this interface is lossy. */ | |
716 | current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ; | |
717 | current->sas_ss_size = SIGSTKSZ; | |
718 | } | |
719 | ||
720 | if (uoss) { | |
721 | error = -EFAULT; | |
722 | if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)) | |
723 | || __put_user(oss_sp, &uoss->ss_sp) | |
724 | || __put_user(oss_os, &uoss->ss_onstack)) | |
725 | goto out; | |
726 | } | |
727 | ||
728 | error = 0; | |
729 | out: | |
730 | return error; | |
731 | } | |
732 | ||
e5d9a90c | 733 | SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count) |
1da177e4 | 734 | { |
31019075 | 735 | const char *sysinfo_table[] = { |
e9ff3990 SH |
736 | utsname()->sysname, |
737 | utsname()->nodename, | |
738 | utsname()->release, | |
739 | utsname()->version, | |
740 | utsname()->machine, | |
1da177e4 LT |
741 | "alpha", /* instruction set architecture */ |
742 | "dummy", /* hardware serial number */ | |
743 | "dummy", /* hardware manufacturer */ | |
744 | "dummy", /* secure RPC domain */ | |
745 | }; | |
746 | unsigned long offset; | |
31019075 | 747 | const char *res; |
1da177e4 LT |
748 | long len, err = -EINVAL; |
749 | ||
750 | offset = command-1; | |
25c8716c | 751 | if (offset >= ARRAY_SIZE(sysinfo_table)) { |
1da177e4 LT |
752 | /* Digital UNIX has a few unpublished interfaces here */ |
753 | printk("sysinfo(%d)", command); | |
754 | goto out; | |
755 | } | |
25c8716c | 756 | |
1da177e4 LT |
757 | down_read(&uts_sem); |
758 | res = sysinfo_table[offset]; | |
759 | len = strlen(res)+1; | |
21c5977a | 760 | if ((unsigned long)len > (unsigned long)count) |
1da177e4 LT |
761 | len = count; |
762 | if (copy_to_user(buf, res, len)) | |
763 | err = -EFAULT; | |
764 | else | |
765 | err = 0; | |
766 | up_read(&uts_sem); | |
767 | out: | |
768 | return err; | |
769 | } | |
770 | ||
e5d9a90c IK |
771 | SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer, |
772 | unsigned long, nbytes, int __user *, start, void __user *, arg) | |
1da177e4 LT |
773 | { |
774 | unsigned long w; | |
775 | struct percpu_struct *cpu; | |
776 | ||
777 | switch (op) { | |
778 | case GSI_IEEE_FP_CONTROL: | |
779 | /* Return current software fp control & status bits. */ | |
780 | /* Note that DU doesn't verify available space here. */ | |
781 | ||
782 | w = current_thread_info()->ieee_state & IEEE_SW_MASK; | |
783 | w = swcr_update_status(w, rdfpcr()); | |
784 | if (put_user(w, (unsigned long __user *) buffer)) | |
785 | return -EFAULT; | |
786 | return 0; | |
787 | ||
788 | case GSI_IEEE_STATE_AT_SIGNAL: | |
789 | /* | |
790 | * Not sure anybody will ever use this weird stuff. These | |
791 | * ops can be used (under OSF/1) to set the fpcr that should | |
792 | * be used when a signal handler starts executing. | |
793 | */ | |
794 | break; | |
795 | ||
796 | case GSI_UACPROC: | |
797 | if (nbytes < sizeof(unsigned int)) | |
798 | return -EINVAL; | |
2df7a7d1 ST |
799 | w = (current_thread_info()->flags >> ALPHA_UAC_SHIFT) & |
800 | UAC_BITMASK; | |
801 | if (put_user(w, (unsigned int __user *)buffer)) | |
802 | return -EFAULT; | |
1da177e4 LT |
803 | return 1; |
804 | ||
805 | case GSI_PROC_TYPE: | |
806 | if (nbytes < sizeof(unsigned long)) | |
807 | return -EINVAL; | |
808 | cpu = (struct percpu_struct*) | |
809 | ((char*)hwrpb + hwrpb->processor_offset); | |
810 | w = cpu->type; | |
811 | if (put_user(w, (unsigned long __user*)buffer)) | |
812 | return -EFAULT; | |
813 | return 1; | |
814 | ||
815 | case GSI_GET_HWRPB: | |
21c5977a | 816 | if (nbytes > sizeof(*hwrpb)) |
1da177e4 LT |
817 | return -EINVAL; |
818 | if (copy_to_user(buffer, hwrpb, nbytes) != 0) | |
819 | return -EFAULT; | |
820 | return 1; | |
821 | ||
822 | default: | |
823 | break; | |
824 | } | |
825 | ||
826 | return -EOPNOTSUPP; | |
827 | } | |
828 | ||
e5d9a90c IK |
829 | SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer, |
830 | unsigned long, nbytes, int __user *, start, void __user *, arg) | |
1da177e4 LT |
831 | { |
832 | switch (op) { | |
833 | case SSI_IEEE_FP_CONTROL: { | |
834 | unsigned long swcr, fpcr; | |
835 | unsigned int *state; | |
836 | ||
837 | /* | |
838 | * Alpha Architecture Handbook 4.7.7.3: | |
839 | * To be fully IEEE compiant, we must track the current IEEE | |
c3a2ddee | 840 | * exception state in software, because spurious bits can be |
1da177e4 LT |
841 | * set in the trap shadow of a software-complete insn. |
842 | */ | |
843 | ||
844 | if (get_user(swcr, (unsigned long __user *)buffer)) | |
845 | return -EFAULT; | |
846 | state = ¤t_thread_info()->ieee_state; | |
847 | ||
848 | /* Update softare trap enable bits. */ | |
849 | *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK); | |
850 | ||
851 | /* Update the real fpcr. */ | |
852 | fpcr = rdfpcr() & FPCR_DYN_MASK; | |
853 | fpcr |= ieee_swcr_to_fpcr(swcr); | |
854 | wrfpcr(fpcr); | |
855 | ||
856 | return 0; | |
857 | } | |
858 | ||
859 | case SSI_IEEE_RAISE_EXCEPTION: { | |
860 | unsigned long exc, swcr, fpcr, fex; | |
861 | unsigned int *state; | |
862 | ||
863 | if (get_user(exc, (unsigned long __user *)buffer)) | |
864 | return -EFAULT; | |
865 | state = ¤t_thread_info()->ieee_state; | |
866 | exc &= IEEE_STATUS_MASK; | |
867 | ||
868 | /* Update softare trap enable bits. */ | |
869 | swcr = (*state & IEEE_SW_MASK) | exc; | |
870 | *state |= exc; | |
871 | ||
872 | /* Update the real fpcr. */ | |
873 | fpcr = rdfpcr(); | |
874 | fpcr |= ieee_swcr_to_fpcr(swcr); | |
875 | wrfpcr(fpcr); | |
876 | ||
877 | /* If any exceptions set by this call, and are unmasked, | |
878 | send a signal. Old exceptions are not signaled. */ | |
879 | fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr; | |
880 | if (fex) { | |
881 | siginfo_t info; | |
882 | int si_code = 0; | |
883 | ||
884 | if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND; | |
885 | if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES; | |
886 | if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND; | |
887 | if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF; | |
888 | if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV; | |
889 | if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV; | |
890 | ||
891 | info.si_signo = SIGFPE; | |
892 | info.si_errno = 0; | |
893 | info.si_code = si_code; | |
894 | info.si_addr = NULL; /* FIXME */ | |
895 | send_sig_info(SIGFPE, &info, current); | |
896 | } | |
897 | return 0; | |
898 | } | |
899 | ||
900 | case SSI_IEEE_STATE_AT_SIGNAL: | |
901 | case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: | |
902 | /* | |
903 | * Not sure anybody will ever use this weird stuff. These | |
904 | * ops can be used (under OSF/1) to set the fpcr that should | |
905 | * be used when a signal handler starts executing. | |
906 | */ | |
907 | break; | |
908 | ||
909 | case SSI_NVPAIRS: { | |
910 | unsigned long v, w, i; | |
911 | unsigned int old, new; | |
912 | ||
913 | for (i = 0; i < nbytes; ++i) { | |
914 | ||
915 | if (get_user(v, 2*i + (unsigned int __user *)buffer)) | |
916 | return -EFAULT; | |
917 | if (get_user(w, 2*i + 1 + (unsigned int __user *)buffer)) | |
918 | return -EFAULT; | |
919 | switch (v) { | |
920 | case SSIN_UACPROC: | |
921 | again: | |
922 | old = current_thread_info()->flags; | |
2df7a7d1 ST |
923 | new = old & ~(UAC_BITMASK << ALPHA_UAC_SHIFT); |
924 | new = new | (w & UAC_BITMASK) << ALPHA_UAC_SHIFT; | |
1da177e4 LT |
925 | if (cmpxchg(¤t_thread_info()->flags, |
926 | old, new) != old) | |
927 | goto again; | |
928 | break; | |
929 | ||
930 | default: | |
931 | return -EOPNOTSUPP; | |
932 | } | |
933 | } | |
934 | return 0; | |
935 | } | |
936 | ||
50744dee MR |
937 | case SSI_LMF: |
938 | return 0; | |
939 | ||
1da177e4 LT |
940 | default: |
941 | break; | |
942 | } | |
943 | ||
944 | return -EOPNOTSUPP; | |
945 | } | |
946 | ||
947 | /* Translations due to the fact that OSF's time_t is an int. Which | |
948 | affects all sorts of things, like timeval and itimerval. */ | |
949 | ||
950 | extern struct timezone sys_tz; | |
1da177e4 LT |
951 | |
952 | struct timeval32 | |
953 | { | |
954 | int tv_sec, tv_usec; | |
955 | }; | |
956 | ||
957 | struct itimerval32 | |
958 | { | |
959 | struct timeval32 it_interval; | |
960 | struct timeval32 it_value; | |
961 | }; | |
962 | ||
963 | static inline long | |
964 | get_tv32(struct timeval *o, struct timeval32 __user *i) | |
965 | { | |
966 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
967 | (__get_user(o->tv_sec, &i->tv_sec) | | |
968 | __get_user(o->tv_usec, &i->tv_usec))); | |
969 | } | |
970 | ||
971 | static inline long | |
972 | put_tv32(struct timeval32 __user *o, struct timeval *i) | |
973 | { | |
974 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
975 | (__put_user(i->tv_sec, &o->tv_sec) | | |
976 | __put_user(i->tv_usec, &o->tv_usec))); | |
977 | } | |
978 | ||
979 | static inline long | |
980 | get_it32(struct itimerval *o, struct itimerval32 __user *i) | |
981 | { | |
982 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
983 | (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | | |
984 | __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | | |
985 | __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | | |
986 | __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); | |
987 | } | |
988 | ||
989 | static inline long | |
990 | put_it32(struct itimerval32 __user *o, struct itimerval *i) | |
991 | { | |
992 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
993 | (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | | |
994 | __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | | |
995 | __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | | |
996 | __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); | |
997 | } | |
998 | ||
999 | static inline void | |
1000 | jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value) | |
1001 | { | |
1002 | value->tv_usec = (jiffies % HZ) * (1000000L / HZ); | |
1003 | value->tv_sec = jiffies / HZ; | |
1004 | } | |
1005 | ||
e5d9a90c IK |
1006 | SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv, |
1007 | struct timezone __user *, tz) | |
1da177e4 LT |
1008 | { |
1009 | if (tv) { | |
1010 | struct timeval ktv; | |
1011 | do_gettimeofday(&ktv); | |
1012 | if (put_tv32(tv, &ktv)) | |
1013 | return -EFAULT; | |
1014 | } | |
1015 | if (tz) { | |
1016 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) | |
1017 | return -EFAULT; | |
1018 | } | |
1019 | return 0; | |
1020 | } | |
1021 | ||
e5d9a90c IK |
1022 | SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv, |
1023 | struct timezone __user *, tz) | |
1da177e4 LT |
1024 | { |
1025 | struct timespec kts; | |
1026 | struct timezone ktz; | |
1027 | ||
1028 | if (tv) { | |
1029 | if (get_tv32((struct timeval *)&kts, tv)) | |
1030 | return -EFAULT; | |
1031 | } | |
1032 | if (tz) { | |
1033 | if (copy_from_user(&ktz, tz, sizeof(*tz))) | |
1034 | return -EFAULT; | |
1035 | } | |
1036 | ||
1037 | kts.tv_nsec *= 1000; | |
1038 | ||
1039 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); | |
1040 | } | |
1041 | ||
e5d9a90c | 1042 | SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it) |
1da177e4 LT |
1043 | { |
1044 | struct itimerval kit; | |
1045 | int error; | |
1046 | ||
1047 | error = do_getitimer(which, &kit); | |
1048 | if (!error && put_it32(it, &kit)) | |
1049 | error = -EFAULT; | |
1050 | ||
1051 | return error; | |
1052 | } | |
1053 | ||
e5d9a90c IK |
1054 | SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in, |
1055 | struct itimerval32 __user *, out) | |
1da177e4 LT |
1056 | { |
1057 | struct itimerval kin, kout; | |
1058 | int error; | |
1059 | ||
1060 | if (in) { | |
1061 | if (get_it32(&kin, in)) | |
1062 | return -EFAULT; | |
1063 | } else | |
1064 | memset(&kin, 0, sizeof(kin)); | |
1065 | ||
1066 | error = do_setitimer(which, &kin, out ? &kout : NULL); | |
1067 | if (error || !out) | |
1068 | return error; | |
1069 | ||
1070 | if (put_it32(out, &kout)) | |
1071 | return -EFAULT; | |
1072 | ||
1073 | return 0; | |
1074 | ||
1075 | } | |
1076 | ||
c7887325 | 1077 | SYSCALL_DEFINE2(osf_utimes, const char __user *, filename, |
e5d9a90c | 1078 | struct timeval32 __user *, tvs) |
1da177e4 | 1079 | { |
1c710c89 | 1080 | struct timespec tv[2]; |
1da177e4 LT |
1081 | |
1082 | if (tvs) { | |
1c710c89 | 1083 | struct timeval ktvs[2]; |
1da177e4 LT |
1084 | if (get_tv32(&ktvs[0], &tvs[0]) || |
1085 | get_tv32(&ktvs[1], &tvs[1])) | |
1086 | return -EFAULT; | |
1c710c89 UD |
1087 | |
1088 | if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 || | |
1089 | ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000) | |
1090 | return -EINVAL; | |
1091 | ||
1092 | tv[0].tv_sec = ktvs[0].tv_sec; | |
1093 | tv[0].tv_nsec = 1000 * ktvs[0].tv_usec; | |
1094 | tv[1].tv_sec = ktvs[1].tv_sec; | |
1095 | tv[1].tv_nsec = 1000 * ktvs[1].tv_usec; | |
1da177e4 LT |
1096 | } |
1097 | ||
1c710c89 | 1098 | return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0); |
1da177e4 LT |
1099 | } |
1100 | ||
e5d9a90c IK |
1101 | SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp, |
1102 | fd_set __user *, exp, struct timeval32 __user *, tvp) | |
1da177e4 | 1103 | { |
14e2acd8 | 1104 | struct timespec end_time, *to = NULL; |
1da177e4 LT |
1105 | if (tvp) { |
1106 | time_t sec, usec; | |
1107 | ||
14e2acd8 AV |
1108 | to = &end_time; |
1109 | ||
1da177e4 LT |
1110 | if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp)) |
1111 | || __get_user(sec, &tvp->tv_sec) | |
1112 | || __get_user(usec, &tvp->tv_usec)) { | |
a2dcb44c | 1113 | return -EFAULT; |
1da177e4 LT |
1114 | } |
1115 | ||
1116 | if (sec < 0 || usec < 0) | |
a2dcb44c | 1117 | return -EINVAL; |
1da177e4 | 1118 | |
14e2acd8 AV |
1119 | if (poll_select_set_timeout(to, sec, usec * NSEC_PER_USEC)) |
1120 | return -EINVAL; | |
1121 | ||
1da177e4 LT |
1122 | } |
1123 | ||
1da177e4 | 1124 | /* OSF does not copy back the remaining time. */ |
14e2acd8 | 1125 | return core_sys_select(n, inp, outp, exp, to); |
1da177e4 LT |
1126 | } |
1127 | ||
1128 | struct rusage32 { | |
1129 | struct timeval32 ru_utime; /* user time used */ | |
1130 | struct timeval32 ru_stime; /* system time used */ | |
1131 | long ru_maxrss; /* maximum resident set size */ | |
1132 | long ru_ixrss; /* integral shared memory size */ | |
1133 | long ru_idrss; /* integral unshared data size */ | |
1134 | long ru_isrss; /* integral unshared stack size */ | |
1135 | long ru_minflt; /* page reclaims */ | |
1136 | long ru_majflt; /* page faults */ | |
1137 | long ru_nswap; /* swaps */ | |
1138 | long ru_inblock; /* block input operations */ | |
1139 | long ru_oublock; /* block output operations */ | |
1140 | long ru_msgsnd; /* messages sent */ | |
1141 | long ru_msgrcv; /* messages received */ | |
1142 | long ru_nsignals; /* signals received */ | |
1143 | long ru_nvcsw; /* voluntary context switches */ | |
1144 | long ru_nivcsw; /* involuntary " */ | |
1145 | }; | |
1146 | ||
e5d9a90c | 1147 | SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru) |
1da177e4 LT |
1148 | { |
1149 | struct rusage32 r; | |
1150 | ||
1151 | if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) | |
1152 | return -EINVAL; | |
1153 | ||
1154 | memset(&r, 0, sizeof(r)); | |
1155 | switch (who) { | |
1156 | case RUSAGE_SELF: | |
1157 | jiffies_to_timeval32(current->utime, &r.ru_utime); | |
1158 | jiffies_to_timeval32(current->stime, &r.ru_stime); | |
1159 | r.ru_minflt = current->min_flt; | |
1160 | r.ru_majflt = current->maj_flt; | |
1161 | break; | |
1162 | case RUSAGE_CHILDREN: | |
1163 | jiffies_to_timeval32(current->signal->cutime, &r.ru_utime); | |
1164 | jiffies_to_timeval32(current->signal->cstime, &r.ru_stime); | |
1165 | r.ru_minflt = current->signal->cmin_flt; | |
1166 | r.ru_majflt = current->signal->cmaj_flt; | |
1167 | break; | |
1168 | } | |
1169 | ||
1170 | return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0; | |
1171 | } | |
1172 | ||
e5d9a90c IK |
1173 | SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options, |
1174 | struct rusage32 __user *, ur) | |
1da177e4 LT |
1175 | { |
1176 | struct rusage r; | |
1177 | long ret, err; | |
21c5977a | 1178 | unsigned int status = 0; |
1da177e4 LT |
1179 | mm_segment_t old_fs; |
1180 | ||
1181 | if (!ur) | |
1182 | return sys_wait4(pid, ustatus, options, NULL); | |
1183 | ||
1184 | old_fs = get_fs(); | |
1185 | ||
1186 | set_fs (KERNEL_DS); | |
21c5977a DR |
1187 | ret = sys_wait4(pid, (unsigned int __user *) &status, options, |
1188 | (struct rusage __user *) &r); | |
1da177e4 LT |
1189 | set_fs (old_fs); |
1190 | ||
1191 | if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur))) | |
1192 | return -EFAULT; | |
1193 | ||
1194 | err = 0; | |
21c5977a | 1195 | err |= put_user(status, ustatus); |
1da177e4 LT |
1196 | err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec); |
1197 | err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec); | |
1198 | err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec); | |
1199 | err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec); | |
1200 | err |= __put_user(r.ru_maxrss, &ur->ru_maxrss); | |
1201 | err |= __put_user(r.ru_ixrss, &ur->ru_ixrss); | |
1202 | err |= __put_user(r.ru_idrss, &ur->ru_idrss); | |
1203 | err |= __put_user(r.ru_isrss, &ur->ru_isrss); | |
1204 | err |= __put_user(r.ru_minflt, &ur->ru_minflt); | |
1205 | err |= __put_user(r.ru_majflt, &ur->ru_majflt); | |
1206 | err |= __put_user(r.ru_nswap, &ur->ru_nswap); | |
1207 | err |= __put_user(r.ru_inblock, &ur->ru_inblock); | |
1208 | err |= __put_user(r.ru_oublock, &ur->ru_oublock); | |
1209 | err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd); | |
1210 | err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv); | |
1211 | err |= __put_user(r.ru_nsignals, &ur->ru_nsignals); | |
1212 | err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw); | |
1213 | err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw); | |
1214 | ||
1215 | return err ? err : ret; | |
1216 | } | |
1217 | ||
1218 | /* | |
1219 | * I don't know what the parameters are: the first one | |
1220 | * seems to be a timeval pointer, and I suspect the second | |
1221 | * one is the time remaining.. Ho humm.. No documentation. | |
1222 | */ | |
e5d9a90c IK |
1223 | SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep, |
1224 | struct timeval32 __user *, remain) | |
1da177e4 LT |
1225 | { |
1226 | struct timeval tmp; | |
1227 | unsigned long ticks; | |
1228 | ||
1229 | if (get_tv32(&tmp, sleep)) | |
1230 | goto fault; | |
1231 | ||
24d568ed | 1232 | ticks = timeval_to_jiffies(&tmp); |
1da177e4 | 1233 | |
20c6abd1 | 1234 | ticks = schedule_timeout_interruptible(ticks); |
1da177e4 LT |
1235 | |
1236 | if (remain) { | |
24d568ed | 1237 | jiffies_to_timeval(ticks, &tmp); |
1da177e4 LT |
1238 | if (put_tv32(remain, &tmp)) |
1239 | goto fault; | |
1240 | } | |
1241 | ||
1242 | return 0; | |
1243 | fault: | |
1244 | return -EFAULT; | |
1245 | } | |
1246 | ||
1247 | ||
1248 | struct timex32 { | |
1249 | unsigned int modes; /* mode selector */ | |
1250 | long offset; /* time offset (usec) */ | |
1251 | long freq; /* frequency offset (scaled ppm) */ | |
1252 | long maxerror; /* maximum error (usec) */ | |
1253 | long esterror; /* estimated error (usec) */ | |
1254 | int status; /* clock command/status */ | |
1255 | long constant; /* pll time constant */ | |
1256 | long precision; /* clock precision (usec) (read only) */ | |
1257 | long tolerance; /* clock frequency tolerance (ppm) | |
1258 | * (read only) | |
1259 | */ | |
1260 | struct timeval32 time; /* (read only) */ | |
1261 | long tick; /* (modified) usecs between clock ticks */ | |
1262 | ||
1263 | long ppsfreq; /* pps frequency (scaled ppm) (ro) */ | |
1264 | long jitter; /* pps jitter (us) (ro) */ | |
1265 | int shift; /* interval duration (s) (shift) (ro) */ | |
1266 | long stabil; /* pps stability (scaled ppm) (ro) */ | |
1267 | long jitcnt; /* jitter limit exceeded (ro) */ | |
1268 | long calcnt; /* calibration intervals (ro) */ | |
1269 | long errcnt; /* calibration errors (ro) */ | |
1270 | long stbcnt; /* stability limit exceeded (ro) */ | |
1271 | ||
1272 | int :32; int :32; int :32; int :32; | |
1273 | int :32; int :32; int :32; int :32; | |
1274 | int :32; int :32; int :32; int :32; | |
1275 | }; | |
1276 | ||
e5d9a90c | 1277 | SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p) |
1da177e4 LT |
1278 | { |
1279 | struct timex txc; | |
1280 | int ret; | |
1281 | ||
1282 | /* copy relevant bits of struct timex. */ | |
1283 | if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) || | |
1284 | copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) - | |
1285 | offsetof(struct timex32, time))) | |
1286 | return -EFAULT; | |
1287 | ||
1288 | ret = do_adjtimex(&txc); | |
1289 | if (ret < 0) | |
1290 | return ret; | |
1291 | ||
1292 | /* copy back to timex32 */ | |
1293 | if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) || | |
1294 | (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) - | |
1295 | offsetof(struct timex32, tick))) || | |
1296 | (put_tv32(&txc_p->time, &txc.time))) | |
1297 | return -EFAULT; | |
1298 | ||
1299 | return ret; | |
1300 | } | |
1301 | ||
1302 | /* Get an address range which is currently unmapped. Similar to the | |
1303 | generic version except that we know how to honor ADDR_LIMIT_32BIT. */ | |
1304 | ||
1305 | static unsigned long | |
1306 | arch_get_unmapped_area_1(unsigned long addr, unsigned long len, | |
1307 | unsigned long limit) | |
1308 | { | |
1309 | struct vm_area_struct *vma = find_vma(current->mm, addr); | |
1310 | ||
1311 | while (1) { | |
1312 | /* At this point: (!vma || addr < vma->vm_end). */ | |
1313 | if (limit - len < addr) | |
1314 | return -ENOMEM; | |
1315 | if (!vma || addr + len <= vma->vm_start) | |
1316 | return addr; | |
1317 | addr = vma->vm_end; | |
1318 | vma = vma->vm_next; | |
1319 | } | |
1320 | } | |
1321 | ||
1322 | unsigned long | |
1323 | arch_get_unmapped_area(struct file *filp, unsigned long addr, | |
1324 | unsigned long len, unsigned long pgoff, | |
1325 | unsigned long flags) | |
1326 | { | |
1327 | unsigned long limit; | |
1328 | ||
1329 | /* "32 bit" actually means 31 bit, since pointers sign extend. */ | |
1330 | if (current->personality & ADDR_LIMIT_32BIT) | |
1331 | limit = 0x80000000; | |
1332 | else | |
1333 | limit = TASK_SIZE; | |
1334 | ||
1335 | if (len > limit) | |
1336 | return -ENOMEM; | |
1337 | ||
4b87b3b2 BH |
1338 | if (flags & MAP_FIXED) |
1339 | return addr; | |
1340 | ||
1da177e4 LT |
1341 | /* First, see if the given suggestion fits. |
1342 | ||
1343 | The OSF/1 loader (/sbin/loader) relies on us returning an | |
1344 | address larger than the requested if one exists, which is | |
1345 | a terribly broken way to program. | |
1346 | ||
1347 | That said, I can see the use in being able to suggest not | |
1348 | merely specific addresses, but regions of memory -- perhaps | |
1349 | this feature should be incorporated into all ports? */ | |
1350 | ||
1351 | if (addr) { | |
1352 | addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); | |
1353 | if (addr != (unsigned long) -ENOMEM) | |
1354 | return addr; | |
1355 | } | |
1356 | ||
1357 | /* Next, try allocating at TASK_UNMAPPED_BASE. */ | |
1358 | addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), | |
1359 | len, limit); | |
1360 | if (addr != (unsigned long) -ENOMEM) | |
1361 | return addr; | |
1362 | ||
1363 | /* Finally, try allocating in low memory. */ | |
1364 | addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit); | |
1365 | ||
1366 | return addr; | |
1367 | } | |
1368 | ||
1369 | #ifdef CONFIG_OSF4_COMPAT | |
1370 | ||
1371 | /* Clear top 32 bits of iov_len in the user's buffer for | |
1372 | compatibility with old versions of OSF/1 where iov_len | |
1373 | was defined as int. */ | |
1374 | static int | |
1375 | osf_fix_iov_len(const struct iovec __user *iov, unsigned long count) | |
1376 | { | |
1377 | unsigned long i; | |
1378 | ||
1379 | for (i = 0 ; i < count ; i++) { | |
1380 | int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1; | |
1381 | ||
1382 | if (put_user(0, iov_len_high)) | |
1383 | return -EFAULT; | |
1384 | } | |
1385 | return 0; | |
1386 | } | |
1387 | ||
e5d9a90c IK |
1388 | SYSCALL_DEFINE3(osf_readv, unsigned long, fd, |
1389 | const struct iovec __user *, vector, unsigned long, count) | |
1da177e4 LT |
1390 | { |
1391 | if (unlikely(personality(current->personality) == PER_OSF4)) | |
1392 | if (osf_fix_iov_len(vector, count)) | |
1393 | return -EFAULT; | |
1394 | return sys_readv(fd, vector, count); | |
1395 | } | |
1396 | ||
e5d9a90c IK |
1397 | SYSCALL_DEFINE3(osf_writev, unsigned long, fd, |
1398 | const struct iovec __user *, vector, unsigned long, count) | |
1da177e4 LT |
1399 | { |
1400 | if (unlikely(personality(current->personality) == PER_OSF4)) | |
1401 | if (osf_fix_iov_len(vector, count)) | |
1402 | return -EFAULT; | |
1403 | return sys_writev(fd, vector, count); | |
1404 | } | |
1405 | ||
1406 | #endif |