Commit | Line | Data |
---|---|---|
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 { | |
f18324e4 | 99 | struct dir_context ctx; |
1da177e4 LT |
100 | struct osf_dirent __user *dirent; |
101 | long __user *basep; | |
102 | unsigned int count; | |
103 | int error; | |
104 | }; | |
105 | ||
106 | static int | |
107 | osf_filldir(void *__buf, const char *name, int namlen, loff_t offset, | |
afefdbb2 | 108 | u64 ino, unsigned int d_type) |
1da177e4 LT |
109 | { |
110 | struct osf_dirent __user *dirent; | |
111 | struct osf_dirent_callback *buf = (struct osf_dirent_callback *) __buf; | |
180e53a7 | 112 | unsigned int reclen = ALIGN(NAME_OFFSET + namlen + 1, sizeof(u32)); |
afefdbb2 | 113 | unsigned int d_ino; |
1da177e4 LT |
114 | |
115 | buf->error = -EINVAL; /* only used if we fail */ | |
116 | if (reclen > buf->count) | |
117 | return -EINVAL; | |
afefdbb2 | 118 | d_ino = ino; |
645e68ed AV |
119 | if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) { |
120 | buf->error = -EOVERFLOW; | |
afefdbb2 | 121 | return -EOVERFLOW; |
645e68ed | 122 | } |
1da177e4 LT |
123 | if (buf->basep) { |
124 | if (put_user(offset, buf->basep)) | |
645e68ed | 125 | goto Efault; |
1da177e4 LT |
126 | buf->basep = NULL; |
127 | } | |
128 | dirent = buf->dirent; | |
645e68ed AV |
129 | if (put_user(d_ino, &dirent->d_ino) || |
130 | put_user(namlen, &dirent->d_namlen) || | |
131 | put_user(reclen, &dirent->d_reclen) || | |
132 | copy_to_user(dirent->d_name, name, namlen) || | |
1da177e4 | 133 | put_user(0, dirent->d_name + namlen)) |
645e68ed | 134 | goto Efault; |
1da177e4 LT |
135 | dirent = (void __user *)dirent + reclen; |
136 | buf->dirent = dirent; | |
137 | buf->count -= reclen; | |
138 | return 0; | |
645e68ed AV |
139 | Efault: |
140 | buf->error = -EFAULT; | |
141 | return -EFAULT; | |
1da177e4 LT |
142 | } |
143 | ||
e5d9a90c IK |
144 | SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd, |
145 | struct osf_dirent __user *, dirent, unsigned int, count, | |
146 | long __user *, basep) | |
1da177e4 LT |
147 | { |
148 | int error; | |
2903ff01 | 149 | struct fd arg = fdget(fd); |
bb7a2117 AV |
150 | struct osf_dirent_callback buf = { |
151 | .ctx.actor = osf_filldir, | |
152 | .dirent = dirent, | |
153 | .basep = basep, | |
154 | .count = count | |
155 | }; | |
1da177e4 | 156 | |
2903ff01 AV |
157 | if (!arg.file) |
158 | return -EBADF; | |
1da177e4 | 159 | |
f18324e4 | 160 | error = iterate_dir(arg.file, &buf.ctx); |
53c9c5c0 AV |
161 | if (error >= 0) |
162 | error = buf.error; | |
1da177e4 LT |
163 | if (count != buf.count) |
164 | error = count - buf.count; | |
165 | ||
2903ff01 | 166 | fdput(arg); |
1da177e4 LT |
167 | return error; |
168 | } | |
169 | ||
1da177e4 LT |
170 | #undef NAME_OFFSET |
171 | ||
e5d9a90c IK |
172 | SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len, |
173 | unsigned long, prot, unsigned long, flags, unsigned long, fd, | |
174 | unsigned long, off) | |
1da177e4 | 175 | { |
f8b72560 | 176 | unsigned long ret = -EINVAL; |
1da177e4 LT |
177 | |
178 | #if 0 | |
179 | if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED)) | |
180 | printk("%s: unimplemented OSF mmap flags %04lx\n", | |
181 | current->comm, flags); | |
182 | #endif | |
f8b72560 AV |
183 | if ((off + PAGE_ALIGN(len)) < off) |
184 | goto out; | |
185 | if (off & ~PAGE_MASK) | |
186 | goto out; | |
187 | ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); | |
1da177e4 LT |
188 | out: |
189 | return ret; | |
190 | } | |
191 | ||
7a8bb98c MR |
192 | struct osf_stat { |
193 | int st_dev; | |
194 | int st_pad1; | |
195 | unsigned st_mode; | |
196 | unsigned short st_nlink; | |
197 | short st_nlink_reserved; | |
198 | unsigned st_uid; | |
199 | unsigned st_gid; | |
200 | int st_rdev; | |
201 | int st_ldev; | |
202 | long st_size; | |
203 | int st_pad2; | |
204 | int st_uatime; | |
205 | int st_pad3; | |
206 | int st_umtime; | |
207 | int st_pad4; | |
208 | int st_uctime; | |
209 | int st_pad5; | |
210 | int st_pad6; | |
211 | unsigned st_flags; | |
212 | unsigned st_gen; | |
213 | long st_spare[4]; | |
214 | unsigned st_ino; | |
215 | int st_ino_reserved; | |
216 | int st_atime; | |
217 | int st_atime_reserved; | |
218 | int st_mtime; | |
219 | int st_mtime_reserved; | |
220 | int st_ctime; | |
221 | int st_ctime_reserved; | |
222 | long st_blksize; | |
223 | long st_blocks; | |
224 | }; | |
1da177e4 LT |
225 | |
226 | /* | |
227 | * The OSF/1 statfs structure is much larger, but this should | |
228 | * match the beginning, at least. | |
229 | */ | |
230 | struct osf_statfs { | |
231 | short f_type; | |
232 | short f_flags; | |
233 | int f_fsize; | |
234 | int f_bsize; | |
235 | int f_blocks; | |
236 | int f_bfree; | |
237 | int f_bavail; | |
238 | int f_files; | |
239 | int f_ffree; | |
240 | __kernel_fsid_t f_fsid; | |
241 | }; | |
242 | ||
7a8bb98c MR |
243 | struct osf_statfs64 { |
244 | short f_type; | |
245 | short f_flags; | |
246 | int f_pad1; | |
247 | int f_pad2; | |
248 | int f_pad3; | |
249 | int f_pad4; | |
250 | int f_pad5; | |
251 | int f_pad6; | |
252 | int f_pad7; | |
253 | __kernel_fsid_t f_fsid; | |
254 | u_short f_namemax; | |
255 | short f_reserved1; | |
256 | int f_spare[8]; | |
257 | char f_pad8[90]; | |
258 | char f_pad9[90]; | |
259 | long mount_info[10]; | |
260 | u_long f_flags2; | |
261 | long f_spare2[14]; | |
262 | long f_fsize; | |
263 | long f_bsize; | |
264 | long f_blocks; | |
265 | long f_bfree; | |
266 | long f_bavail; | |
267 | long f_files; | |
268 | long f_ffree; | |
269 | }; | |
270 | ||
271 | static int | |
272 | linux_to_osf_stat(struct kstat *lstat, struct osf_stat __user *osf_stat) | |
273 | { | |
274 | struct osf_stat tmp = { 0 }; | |
275 | ||
276 | tmp.st_dev = lstat->dev; | |
277 | tmp.st_mode = lstat->mode; | |
278 | tmp.st_nlink = lstat->nlink; | |
f31389d5 EB |
279 | tmp.st_uid = from_kuid_munged(current_user_ns(), lstat->uid); |
280 | tmp.st_gid = from_kgid_munged(current_user_ns(), lstat->gid); | |
7a8bb98c MR |
281 | tmp.st_rdev = lstat->rdev; |
282 | tmp.st_ldev = lstat->rdev; | |
283 | tmp.st_size = lstat->size; | |
284 | tmp.st_uatime = lstat->atime.tv_nsec / 1000; | |
285 | tmp.st_umtime = lstat->mtime.tv_nsec / 1000; | |
286 | tmp.st_uctime = lstat->ctime.tv_nsec / 1000; | |
287 | tmp.st_ino = lstat->ino; | |
288 | tmp.st_atime = lstat->atime.tv_sec; | |
289 | tmp.st_mtime = lstat->mtime.tv_sec; | |
290 | tmp.st_ctime = lstat->ctime.tv_sec; | |
291 | tmp.st_blksize = lstat->blksize; | |
292 | tmp.st_blocks = lstat->blocks; | |
293 | ||
294 | return copy_to_user(osf_stat, &tmp, sizeof(tmp)) ? -EFAULT : 0; | |
295 | } | |
296 | ||
1da177e4 LT |
297 | static int |
298 | linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat, | |
299 | unsigned long bufsiz) | |
300 | { | |
301 | struct osf_statfs tmp_stat; | |
302 | ||
303 | tmp_stat.f_type = linux_stat->f_type; | |
304 | tmp_stat.f_flags = 0; /* mount flags */ | |
305 | tmp_stat.f_fsize = linux_stat->f_frsize; | |
306 | tmp_stat.f_bsize = linux_stat->f_bsize; | |
307 | tmp_stat.f_blocks = linux_stat->f_blocks; | |
308 | tmp_stat.f_bfree = linux_stat->f_bfree; | |
309 | tmp_stat.f_bavail = linux_stat->f_bavail; | |
310 | tmp_stat.f_files = linux_stat->f_files; | |
311 | tmp_stat.f_ffree = linux_stat->f_ffree; | |
312 | tmp_stat.f_fsid = linux_stat->f_fsid; | |
313 | if (bufsiz > sizeof(tmp_stat)) | |
314 | bufsiz = sizeof(tmp_stat); | |
315 | return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; | |
316 | } | |
317 | ||
7a8bb98c MR |
318 | static int |
319 | linux_to_osf_statfs64(struct kstatfs *linux_stat, struct osf_statfs64 __user *osf_stat, | |
320 | unsigned long bufsiz) | |
321 | { | |
322 | struct osf_statfs64 tmp_stat = { 0 }; | |
323 | ||
324 | tmp_stat.f_type = linux_stat->f_type; | |
325 | tmp_stat.f_fsize = linux_stat->f_frsize; | |
326 | tmp_stat.f_bsize = linux_stat->f_bsize; | |
327 | tmp_stat.f_blocks = linux_stat->f_blocks; | |
328 | tmp_stat.f_bfree = linux_stat->f_bfree; | |
329 | tmp_stat.f_bavail = linux_stat->f_bavail; | |
330 | tmp_stat.f_files = linux_stat->f_files; | |
331 | tmp_stat.f_ffree = linux_stat->f_ffree; | |
332 | tmp_stat.f_fsid = linux_stat->f_fsid; | |
333 | if (bufsiz > sizeof(tmp_stat)) | |
334 | bufsiz = sizeof(tmp_stat); | |
335 | return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; | |
336 | } | |
337 | ||
c8b91acc AV |
338 | SYSCALL_DEFINE3(osf_statfs, const char __user *, pathname, |
339 | struct osf_statfs __user *, buffer, unsigned long, bufsiz) | |
1da177e4 LT |
340 | { |
341 | struct kstatfs linux_stat; | |
c8b91acc | 342 | int error = user_statfs(pathname, &linux_stat); |
1da177e4 LT |
343 | if (!error) |
344 | error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); | |
345 | return error; | |
346 | } | |
347 | ||
7a8bb98c MR |
348 | SYSCALL_DEFINE2(osf_stat, char __user *, name, struct osf_stat __user *, buf) |
349 | { | |
350 | struct kstat stat; | |
351 | int error; | |
352 | ||
353 | error = vfs_stat(name, &stat); | |
354 | if (error) | |
355 | return error; | |
356 | ||
357 | return linux_to_osf_stat(&stat, buf); | |
358 | } | |
359 | ||
360 | SYSCALL_DEFINE2(osf_lstat, char __user *, name, struct osf_stat __user *, buf) | |
361 | { | |
362 | struct kstat stat; | |
363 | int error; | |
364 | ||
365 | error = vfs_lstat(name, &stat); | |
366 | if (error) | |
367 | return error; | |
368 | ||
369 | return linux_to_osf_stat(&stat, buf); | |
370 | } | |
371 | ||
372 | SYSCALL_DEFINE2(osf_fstat, int, fd, struct osf_stat __user *, buf) | |
373 | { | |
374 | struct kstat stat; | |
375 | int error; | |
376 | ||
377 | error = vfs_fstat(fd, &stat); | |
378 | if (error) | |
379 | return error; | |
380 | ||
381 | return linux_to_osf_stat(&stat, buf); | |
382 | } | |
383 | ||
e5d9a90c IK |
384 | SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd, |
385 | struct osf_statfs __user *, buffer, unsigned long, bufsiz) | |
1da177e4 | 386 | { |
c8b91acc AV |
387 | struct kstatfs linux_stat; |
388 | int error = fd_statfs(fd, &linux_stat); | |
389 | if (!error) | |
390 | error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); | |
391 | return error; | |
1da177e4 LT |
392 | } |
393 | ||
7a8bb98c MR |
394 | SYSCALL_DEFINE3(osf_statfs64, char __user *, pathname, |
395 | struct osf_statfs64 __user *, buffer, unsigned long, bufsiz) | |
396 | { | |
397 | struct kstatfs linux_stat; | |
398 | int error = user_statfs(pathname, &linux_stat); | |
399 | if (!error) | |
400 | error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz); | |
401 | return error; | |
402 | } | |
403 | ||
404 | SYSCALL_DEFINE3(osf_fstatfs64, unsigned long, fd, | |
405 | struct osf_statfs64 __user *, buffer, unsigned long, bufsiz) | |
406 | { | |
407 | struct kstatfs linux_stat; | |
408 | int error = fd_statfs(fd, &linux_stat); | |
409 | if (!error) | |
410 | error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz); | |
411 | return error; | |
412 | } | |
413 | ||
1da177e4 LT |
414 | /* |
415 | * Uhh.. OSF/1 mount parameters aren't exactly obvious.. | |
416 | * | |
417 | * Although to be frank, neither are the native Linux/i386 ones.. | |
418 | */ | |
419 | struct ufs_args { | |
420 | char __user *devname; | |
421 | int flags; | |
422 | uid_t exroot; | |
423 | }; | |
424 | ||
425 | struct cdfs_args { | |
426 | char __user *devname; | |
427 | int flags; | |
428 | uid_t exroot; | |
429 | ||
430 | /* This has lots more here, which Linux handles with the option block | |
431 | but I'm too lazy to do the translation into ASCII. */ | |
432 | }; | |
433 | ||
434 | struct procfs_args { | |
435 | char __user *devname; | |
436 | int flags; | |
437 | uid_t exroot; | |
438 | }; | |
439 | ||
440 | /* | |
441 | * We can't actually handle ufs yet, so we translate UFS mounts to | |
442 | * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS | |
443 | * layout is so braindead it's a major headache doing it. | |
444 | * | |
445 | * Just how long ago was it written? OTOH our UFS driver may be still | |
446 | * unhappy with OSF UFS. [CHECKME] | |
447 | */ | |
448 | static int | |
a736427f | 449 | osf_ufs_mount(const char *dirname, struct ufs_args __user *args, int flags) |
1da177e4 LT |
450 | { |
451 | int retval; | |
452 | struct cdfs_args tmp; | |
91a27b2a | 453 | struct filename *devname; |
1da177e4 LT |
454 | |
455 | retval = -EFAULT; | |
456 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
457 | goto out; | |
458 | devname = getname(tmp.devname); | |
459 | retval = PTR_ERR(devname); | |
460 | if (IS_ERR(devname)) | |
461 | goto out; | |
91a27b2a | 462 | retval = do_mount(devname->name, dirname, "ext2", flags, NULL); |
1da177e4 LT |
463 | putname(devname); |
464 | out: | |
465 | return retval; | |
466 | } | |
467 | ||
468 | static int | |
a736427f | 469 | osf_cdfs_mount(const char *dirname, struct cdfs_args __user *args, int flags) |
1da177e4 LT |
470 | { |
471 | int retval; | |
472 | struct cdfs_args tmp; | |
91a27b2a | 473 | struct filename *devname; |
1da177e4 LT |
474 | |
475 | retval = -EFAULT; | |
476 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
477 | goto out; | |
478 | devname = getname(tmp.devname); | |
479 | retval = PTR_ERR(devname); | |
480 | if (IS_ERR(devname)) | |
481 | goto out; | |
91a27b2a | 482 | retval = do_mount(devname->name, dirname, "iso9660", flags, NULL); |
1da177e4 LT |
483 | putname(devname); |
484 | out: | |
485 | return retval; | |
486 | } | |
487 | ||
488 | static int | |
a736427f | 489 | osf_procfs_mount(const char *dirname, struct procfs_args __user *args, int flags) |
1da177e4 LT |
490 | { |
491 | struct procfs_args tmp; | |
492 | ||
493 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
494 | return -EFAULT; | |
495 | ||
496 | return do_mount("", dirname, "proc", flags, NULL); | |
497 | } | |
498 | ||
c7887325 | 499 | SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path, |
e5d9a90c | 500 | int, flag, void __user *, data) |
1da177e4 | 501 | { |
77079dbe | 502 | int retval; |
91a27b2a | 503 | struct filename *name; |
1da177e4 | 504 | |
1da177e4 LT |
505 | name = getname(path); |
506 | retval = PTR_ERR(name); | |
507 | if (IS_ERR(name)) | |
508 | goto out; | |
509 | switch (typenr) { | |
510 | case 1: | |
91a27b2a | 511 | retval = osf_ufs_mount(name->name, data, flag); |
1da177e4 LT |
512 | break; |
513 | case 6: | |
91a27b2a | 514 | retval = osf_cdfs_mount(name->name, data, flag); |
1da177e4 LT |
515 | break; |
516 | case 9: | |
91a27b2a | 517 | retval = osf_procfs_mount(name->name, data, flag); |
1da177e4 LT |
518 | break; |
519 | default: | |
77079dbe | 520 | retval = -EINVAL; |
1da177e4 LT |
521 | printk("osf_mount(%ld, %x)\n", typenr, flag); |
522 | } | |
523 | putname(name); | |
524 | out: | |
1da177e4 LT |
525 | return retval; |
526 | } | |
527 | ||
e5d9a90c | 528 | SYSCALL_DEFINE1(osf_utsname, char __user *, name) |
1da177e4 LT |
529 | { |
530 | int error; | |
531 | ||
532 | down_read(&uts_sem); | |
533 | error = -EFAULT; | |
e9ff3990 | 534 | if (copy_to_user(name + 0, utsname()->sysname, 32)) |
1da177e4 | 535 | goto out; |
e9ff3990 | 536 | if (copy_to_user(name + 32, utsname()->nodename, 32)) |
1da177e4 | 537 | goto out; |
e9ff3990 | 538 | if (copy_to_user(name + 64, utsname()->release, 32)) |
1da177e4 | 539 | goto out; |
e9ff3990 | 540 | if (copy_to_user(name + 96, utsname()->version, 32)) |
1da177e4 | 541 | goto out; |
e9ff3990 | 542 | if (copy_to_user(name + 128, utsname()->machine, 32)) |
1da177e4 LT |
543 | goto out; |
544 | ||
545 | error = 0; | |
546 | out: | |
547 | up_read(&uts_sem); | |
548 | return error; | |
549 | } | |
550 | ||
e5d9a90c | 551 | SYSCALL_DEFINE0(getpagesize) |
1da177e4 LT |
552 | { |
553 | return PAGE_SIZE; | |
554 | } | |
555 | ||
e5d9a90c | 556 | SYSCALL_DEFINE0(getdtablesize) |
1da177e4 | 557 | { |
9cfe015a | 558 | return sysctl_nr_open; |
1da177e4 LT |
559 | } |
560 | ||
561 | /* | |
562 | * For compatibility with OSF/1 only. Use utsname(2) instead. | |
563 | */ | |
e5d9a90c | 564 | SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen) |
1da177e4 LT |
565 | { |
566 | unsigned len; | |
567 | int i; | |
568 | ||
569 | if (!access_ok(VERIFY_WRITE, name, namelen)) | |
570 | return -EFAULT; | |
571 | ||
572 | len = namelen; | |
21c5977a | 573 | if (len > 32) |
1da177e4 LT |
574 | len = 32; |
575 | ||
576 | down_read(&uts_sem); | |
577 | for (i = 0; i < len; ++i) { | |
e9ff3990 SH |
578 | __put_user(utsname()->domainname[i], name + i); |
579 | if (utsname()->domainname[i] == '\0') | |
1da177e4 LT |
580 | break; |
581 | } | |
582 | up_read(&uts_sem); | |
583 | ||
584 | return 0; | |
585 | } | |
586 | ||
1da177e4 LT |
587 | /* |
588 | * The following stuff should move into a header file should it ever | |
589 | * be labeled "officially supported." Right now, there is just enough | |
590 | * support to avoid applications (such as tar) printing error | |
591 | * messages. The attributes are not really implemented. | |
592 | */ | |
593 | ||
594 | /* | |
595 | * Values for Property list entry flag | |
596 | */ | |
597 | #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry | |
598 | by default */ | |
599 | #define PLE_FLAG_MASK 0x1 /* Valid flag values */ | |
600 | #define PLE_FLAG_ALL -1 /* All flag value */ | |
601 | ||
602 | struct proplistname_args { | |
603 | unsigned int pl_mask; | |
604 | unsigned int pl_numnames; | |
605 | char **pl_names; | |
606 | }; | |
607 | ||
608 | union pl_args { | |
609 | struct setargs { | |
610 | char __user *path; | |
611 | long follow; | |
612 | long nbytes; | |
613 | char __user *buf; | |
614 | } set; | |
615 | struct fsetargs { | |
616 | long fd; | |
617 | long nbytes; | |
618 | char __user *buf; | |
619 | } fset; | |
620 | struct getargs { | |
621 | char __user *path; | |
622 | long follow; | |
623 | struct proplistname_args __user *name_args; | |
624 | long nbytes; | |
625 | char __user *buf; | |
626 | int __user *min_buf_size; | |
627 | } get; | |
628 | struct fgetargs { | |
629 | long fd; | |
630 | struct proplistname_args __user *name_args; | |
631 | long nbytes; | |
632 | char __user *buf; | |
633 | int __user *min_buf_size; | |
634 | } fget; | |
635 | struct delargs { | |
636 | char __user *path; | |
637 | long follow; | |
638 | struct proplistname_args __user *name_args; | |
639 | } del; | |
640 | struct fdelargs { | |
641 | long fd; | |
642 | struct proplistname_args __user *name_args; | |
643 | } fdel; | |
644 | }; | |
645 | ||
646 | enum pl_code { | |
647 | PL_SET = 1, PL_FSET = 2, | |
648 | PL_GET = 3, PL_FGET = 4, | |
649 | PL_DEL = 5, PL_FDEL = 6 | |
650 | }; | |
651 | ||
e5d9a90c IK |
652 | SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code, |
653 | union pl_args __user *, args) | |
1da177e4 LT |
654 | { |
655 | long error; | |
656 | int __user *min_buf_size_ptr; | |
657 | ||
1da177e4 LT |
658 | switch (code) { |
659 | case PL_SET: | |
660 | if (get_user(error, &args->set.nbytes)) | |
661 | error = -EFAULT; | |
662 | break; | |
663 | case PL_FSET: | |
664 | if (get_user(error, &args->fset.nbytes)) | |
665 | error = -EFAULT; | |
666 | break; | |
667 | case PL_GET: | |
668 | error = get_user(min_buf_size_ptr, &args->get.min_buf_size); | |
669 | if (error) | |
670 | break; | |
671 | error = put_user(0, min_buf_size_ptr); | |
672 | break; | |
673 | case PL_FGET: | |
674 | error = get_user(min_buf_size_ptr, &args->fget.min_buf_size); | |
675 | if (error) | |
676 | break; | |
677 | error = put_user(0, min_buf_size_ptr); | |
678 | break; | |
679 | case PL_DEL: | |
680 | case PL_FDEL: | |
681 | error = 0; | |
682 | break; | |
683 | default: | |
684 | error = -EOPNOTSUPP; | |
685 | break; | |
686 | }; | |
1da177e4 LT |
687 | return error; |
688 | } | |
689 | ||
e5d9a90c IK |
690 | SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss, |
691 | struct sigstack __user *, uoss) | |
1da177e4 LT |
692 | { |
693 | unsigned long usp = rdusp(); | |
694 | unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size; | |
695 | unsigned long oss_os = on_sig_stack(usp); | |
696 | int error; | |
697 | ||
698 | if (uss) { | |
699 | void __user *ss_sp; | |
700 | ||
701 | error = -EFAULT; | |
702 | if (get_user(ss_sp, &uss->ss_sp)) | |
703 | goto out; | |
704 | ||
705 | /* If the current stack was set with sigaltstack, don't | |
706 | swap stacks while we are on it. */ | |
707 | error = -EPERM; | |
708 | if (current->sas_ss_sp && on_sig_stack(usp)) | |
709 | goto out; | |
710 | ||
711 | /* Since we don't know the extent of the stack, and we don't | |
712 | track onstack-ness, but rather calculate it, we must | |
713 | presume a size. Ho hum this interface is lossy. */ | |
714 | current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ; | |
715 | current->sas_ss_size = SIGSTKSZ; | |
716 | } | |
717 | ||
718 | if (uoss) { | |
719 | error = -EFAULT; | |
720 | if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)) | |
721 | || __put_user(oss_sp, &uoss->ss_sp) | |
722 | || __put_user(oss_os, &uoss->ss_onstack)) | |
723 | goto out; | |
724 | } | |
725 | ||
726 | error = 0; | |
727 | out: | |
728 | return error; | |
729 | } | |
730 | ||
e5d9a90c | 731 | SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count) |
1da177e4 | 732 | { |
31019075 | 733 | const char *sysinfo_table[] = { |
e9ff3990 SH |
734 | utsname()->sysname, |
735 | utsname()->nodename, | |
736 | utsname()->release, | |
737 | utsname()->version, | |
738 | utsname()->machine, | |
1da177e4 LT |
739 | "alpha", /* instruction set architecture */ |
740 | "dummy", /* hardware serial number */ | |
741 | "dummy", /* hardware manufacturer */ | |
742 | "dummy", /* secure RPC domain */ | |
743 | }; | |
744 | unsigned long offset; | |
31019075 | 745 | const char *res; |
1da177e4 LT |
746 | long len, err = -EINVAL; |
747 | ||
748 | offset = command-1; | |
25c8716c | 749 | if (offset >= ARRAY_SIZE(sysinfo_table)) { |
1da177e4 LT |
750 | /* Digital UNIX has a few unpublished interfaces here */ |
751 | printk("sysinfo(%d)", command); | |
752 | goto out; | |
753 | } | |
25c8716c | 754 | |
1da177e4 LT |
755 | down_read(&uts_sem); |
756 | res = sysinfo_table[offset]; | |
757 | len = strlen(res)+1; | |
21c5977a | 758 | if ((unsigned long)len > (unsigned long)count) |
1da177e4 LT |
759 | len = count; |
760 | if (copy_to_user(buf, res, len)) | |
761 | err = -EFAULT; | |
762 | else | |
763 | err = 0; | |
764 | up_read(&uts_sem); | |
765 | out: | |
766 | return err; | |
767 | } | |
768 | ||
e5d9a90c IK |
769 | SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer, |
770 | unsigned long, nbytes, int __user *, start, void __user *, arg) | |
1da177e4 LT |
771 | { |
772 | unsigned long w; | |
773 | struct percpu_struct *cpu; | |
774 | ||
775 | switch (op) { | |
776 | case GSI_IEEE_FP_CONTROL: | |
777 | /* Return current software fp control & status bits. */ | |
778 | /* Note that DU doesn't verify available space here. */ | |
779 | ||
780 | w = current_thread_info()->ieee_state & IEEE_SW_MASK; | |
781 | w = swcr_update_status(w, rdfpcr()); | |
782 | if (put_user(w, (unsigned long __user *) buffer)) | |
783 | return -EFAULT; | |
784 | return 0; | |
785 | ||
786 | case GSI_IEEE_STATE_AT_SIGNAL: | |
787 | /* | |
788 | * Not sure anybody will ever use this weird stuff. These | |
789 | * ops can be used (under OSF/1) to set the fpcr that should | |
790 | * be used when a signal handler starts executing. | |
791 | */ | |
792 | break; | |
793 | ||
794 | case GSI_UACPROC: | |
795 | if (nbytes < sizeof(unsigned int)) | |
796 | return -EINVAL; | |
3185bd26 | 797 | w = current_thread_info()->status & UAC_BITMASK; |
2df7a7d1 ST |
798 | if (put_user(w, (unsigned int __user *)buffer)) |
799 | return -EFAULT; | |
1da177e4 LT |
800 | return 1; |
801 | ||
802 | case GSI_PROC_TYPE: | |
803 | if (nbytes < sizeof(unsigned long)) | |
804 | return -EINVAL; | |
805 | cpu = (struct percpu_struct*) | |
806 | ((char*)hwrpb + hwrpb->processor_offset); | |
807 | w = cpu->type; | |
808 | if (put_user(w, (unsigned long __user*)buffer)) | |
809 | return -EFAULT; | |
810 | return 1; | |
811 | ||
812 | case GSI_GET_HWRPB: | |
21c5977a | 813 | if (nbytes > sizeof(*hwrpb)) |
1da177e4 LT |
814 | return -EINVAL; |
815 | if (copy_to_user(buffer, hwrpb, nbytes) != 0) | |
816 | return -EFAULT; | |
817 | return 1; | |
818 | ||
819 | default: | |
820 | break; | |
821 | } | |
822 | ||
823 | return -EOPNOTSUPP; | |
824 | } | |
825 | ||
e5d9a90c IK |
826 | SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer, |
827 | unsigned long, nbytes, int __user *, start, void __user *, arg) | |
1da177e4 LT |
828 | { |
829 | switch (op) { | |
830 | case SSI_IEEE_FP_CONTROL: { | |
831 | unsigned long swcr, fpcr; | |
832 | unsigned int *state; | |
833 | ||
834 | /* | |
835 | * Alpha Architecture Handbook 4.7.7.3: | |
836 | * To be fully IEEE compiant, we must track the current IEEE | |
c3a2ddee | 837 | * exception state in software, because spurious bits can be |
1da177e4 LT |
838 | * set in the trap shadow of a software-complete insn. |
839 | */ | |
840 | ||
841 | if (get_user(swcr, (unsigned long __user *)buffer)) | |
842 | return -EFAULT; | |
843 | state = ¤t_thread_info()->ieee_state; | |
844 | ||
845 | /* Update softare trap enable bits. */ | |
846 | *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK); | |
847 | ||
848 | /* Update the real fpcr. */ | |
849 | fpcr = rdfpcr() & FPCR_DYN_MASK; | |
850 | fpcr |= ieee_swcr_to_fpcr(swcr); | |
851 | wrfpcr(fpcr); | |
852 | ||
853 | return 0; | |
854 | } | |
855 | ||
856 | case SSI_IEEE_RAISE_EXCEPTION: { | |
857 | unsigned long exc, swcr, fpcr, fex; | |
858 | unsigned int *state; | |
859 | ||
860 | if (get_user(exc, (unsigned long __user *)buffer)) | |
861 | return -EFAULT; | |
862 | state = ¤t_thread_info()->ieee_state; | |
863 | exc &= IEEE_STATUS_MASK; | |
864 | ||
865 | /* Update softare trap enable bits. */ | |
866 | swcr = (*state & IEEE_SW_MASK) | exc; | |
867 | *state |= exc; | |
868 | ||
869 | /* Update the real fpcr. */ | |
870 | fpcr = rdfpcr(); | |
871 | fpcr |= ieee_swcr_to_fpcr(swcr); | |
872 | wrfpcr(fpcr); | |
873 | ||
874 | /* If any exceptions set by this call, and are unmasked, | |
875 | send a signal. Old exceptions are not signaled. */ | |
876 | fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr; | |
877 | if (fex) { | |
878 | siginfo_t info; | |
879 | int si_code = 0; | |
880 | ||
881 | if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND; | |
882 | if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES; | |
883 | if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND; | |
884 | if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF; | |
885 | if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV; | |
886 | if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV; | |
887 | ||
888 | info.si_signo = SIGFPE; | |
889 | info.si_errno = 0; | |
890 | info.si_code = si_code; | |
891 | info.si_addr = NULL; /* FIXME */ | |
892 | send_sig_info(SIGFPE, &info, current); | |
893 | } | |
894 | return 0; | |
895 | } | |
896 | ||
897 | case SSI_IEEE_STATE_AT_SIGNAL: | |
898 | case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: | |
899 | /* | |
900 | * Not sure anybody will ever use this weird stuff. These | |
901 | * ops can be used (under OSF/1) to set the fpcr that should | |
902 | * be used when a signal handler starts executing. | |
903 | */ | |
904 | break; | |
905 | ||
906 | case SSI_NVPAIRS: { | |
3185bd26 AV |
907 | unsigned __user *p = buffer; |
908 | unsigned i; | |
1da177e4 | 909 | |
3185bd26 AV |
910 | for (i = 0, p = buffer; i < nbytes; ++i, p += 2) { |
911 | unsigned v, w, status; | |
1da177e4 | 912 | |
3185bd26 | 913 | if (get_user(v, p) || get_user(w, p + 1)) |
1da177e4 LT |
914 | return -EFAULT; |
915 | switch (v) { | |
916 | case SSIN_UACPROC: | |
3185bd26 AV |
917 | w &= UAC_BITMASK; |
918 | status = current_thread_info()->status; | |
919 | status = (status & ~UAC_BITMASK) | w; | |
920 | current_thread_info()->status = status; | |
1da177e4 LT |
921 | break; |
922 | ||
923 | default: | |
924 | return -EOPNOTSUPP; | |
925 | } | |
926 | } | |
927 | return 0; | |
928 | } | |
929 | ||
50744dee MR |
930 | case SSI_LMF: |
931 | return 0; | |
932 | ||
1da177e4 LT |
933 | default: |
934 | break; | |
935 | } | |
936 | ||
937 | return -EOPNOTSUPP; | |
938 | } | |
939 | ||
940 | /* Translations due to the fact that OSF's time_t is an int. Which | |
941 | affects all sorts of things, like timeval and itimerval. */ | |
942 | ||
943 | extern struct timezone sys_tz; | |
1da177e4 LT |
944 | |
945 | struct timeval32 | |
946 | { | |
947 | int tv_sec, tv_usec; | |
948 | }; | |
949 | ||
950 | struct itimerval32 | |
951 | { | |
952 | struct timeval32 it_interval; | |
953 | struct timeval32 it_value; | |
954 | }; | |
955 | ||
956 | static inline long | |
957 | get_tv32(struct timeval *o, struct timeval32 __user *i) | |
958 | { | |
959 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
960 | (__get_user(o->tv_sec, &i->tv_sec) | | |
961 | __get_user(o->tv_usec, &i->tv_usec))); | |
962 | } | |
963 | ||
964 | static inline long | |
965 | put_tv32(struct timeval32 __user *o, struct timeval *i) | |
966 | { | |
967 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
968 | (__put_user(i->tv_sec, &o->tv_sec) | | |
969 | __put_user(i->tv_usec, &o->tv_usec))); | |
970 | } | |
971 | ||
972 | static inline long | |
973 | get_it32(struct itimerval *o, struct itimerval32 __user *i) | |
974 | { | |
975 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
976 | (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | | |
977 | __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | | |
978 | __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | | |
979 | __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); | |
980 | } | |
981 | ||
982 | static inline long | |
983 | put_it32(struct itimerval32 __user *o, struct itimerval *i) | |
984 | { | |
985 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
986 | (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | | |
987 | __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | | |
988 | __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | | |
989 | __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); | |
990 | } | |
991 | ||
992 | static inline void | |
993 | jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value) | |
994 | { | |
995 | value->tv_usec = (jiffies % HZ) * (1000000L / HZ); | |
996 | value->tv_sec = jiffies / HZ; | |
997 | } | |
998 | ||
e5d9a90c IK |
999 | SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv, |
1000 | struct timezone __user *, tz) | |
1da177e4 LT |
1001 | { |
1002 | if (tv) { | |
1003 | struct timeval ktv; | |
1004 | do_gettimeofday(&ktv); | |
1005 | if (put_tv32(tv, &ktv)) | |
1006 | return -EFAULT; | |
1007 | } | |
1008 | if (tz) { | |
1009 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) | |
1010 | return -EFAULT; | |
1011 | } | |
1012 | return 0; | |
1013 | } | |
1014 | ||
e5d9a90c IK |
1015 | SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv, |
1016 | struct timezone __user *, tz) | |
1da177e4 LT |
1017 | { |
1018 | struct timespec kts; | |
1019 | struct timezone ktz; | |
1020 | ||
1021 | if (tv) { | |
1022 | if (get_tv32((struct timeval *)&kts, tv)) | |
1023 | return -EFAULT; | |
1024 | } | |
1025 | if (tz) { | |
1026 | if (copy_from_user(&ktz, tz, sizeof(*tz))) | |
1027 | return -EFAULT; | |
1028 | } | |
1029 | ||
1030 | kts.tv_nsec *= 1000; | |
1031 | ||
1032 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); | |
1033 | } | |
1034 | ||
e5d9a90c | 1035 | SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it) |
1da177e4 LT |
1036 | { |
1037 | struct itimerval kit; | |
1038 | int error; | |
1039 | ||
1040 | error = do_getitimer(which, &kit); | |
1041 | if (!error && put_it32(it, &kit)) | |
1042 | error = -EFAULT; | |
1043 | ||
1044 | return error; | |
1045 | } | |
1046 | ||
e5d9a90c IK |
1047 | SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in, |
1048 | struct itimerval32 __user *, out) | |
1da177e4 LT |
1049 | { |
1050 | struct itimerval kin, kout; | |
1051 | int error; | |
1052 | ||
1053 | if (in) { | |
1054 | if (get_it32(&kin, in)) | |
1055 | return -EFAULT; | |
1056 | } else | |
1057 | memset(&kin, 0, sizeof(kin)); | |
1058 | ||
1059 | error = do_setitimer(which, &kin, out ? &kout : NULL); | |
1060 | if (error || !out) | |
1061 | return error; | |
1062 | ||
1063 | if (put_it32(out, &kout)) | |
1064 | return -EFAULT; | |
1065 | ||
1066 | return 0; | |
1067 | ||
1068 | } | |
1069 | ||
c7887325 | 1070 | SYSCALL_DEFINE2(osf_utimes, const char __user *, filename, |
e5d9a90c | 1071 | struct timeval32 __user *, tvs) |
1da177e4 | 1072 | { |
1c710c89 | 1073 | struct timespec tv[2]; |
1da177e4 LT |
1074 | |
1075 | if (tvs) { | |
1c710c89 | 1076 | struct timeval ktvs[2]; |
1da177e4 LT |
1077 | if (get_tv32(&ktvs[0], &tvs[0]) || |
1078 | get_tv32(&ktvs[1], &tvs[1])) | |
1079 | return -EFAULT; | |
1c710c89 UD |
1080 | |
1081 | if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 || | |
1082 | ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000) | |
1083 | return -EINVAL; | |
1084 | ||
1085 | tv[0].tv_sec = ktvs[0].tv_sec; | |
1086 | tv[0].tv_nsec = 1000 * ktvs[0].tv_usec; | |
1087 | tv[1].tv_sec = ktvs[1].tv_sec; | |
1088 | tv[1].tv_nsec = 1000 * ktvs[1].tv_usec; | |
1da177e4 LT |
1089 | } |
1090 | ||
1c710c89 | 1091 | return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0); |
1da177e4 LT |
1092 | } |
1093 | ||
e5d9a90c IK |
1094 | SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp, |
1095 | fd_set __user *, exp, struct timeval32 __user *, tvp) | |
1da177e4 | 1096 | { |
14e2acd8 | 1097 | struct timespec end_time, *to = NULL; |
1da177e4 LT |
1098 | if (tvp) { |
1099 | time_t sec, usec; | |
1100 | ||
14e2acd8 AV |
1101 | to = &end_time; |
1102 | ||
1da177e4 LT |
1103 | if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp)) |
1104 | || __get_user(sec, &tvp->tv_sec) | |
1105 | || __get_user(usec, &tvp->tv_usec)) { | |
a2dcb44c | 1106 | return -EFAULT; |
1da177e4 LT |
1107 | } |
1108 | ||
1109 | if (sec < 0 || usec < 0) | |
a2dcb44c | 1110 | return -EINVAL; |
1da177e4 | 1111 | |
14e2acd8 AV |
1112 | if (poll_select_set_timeout(to, sec, usec * NSEC_PER_USEC)) |
1113 | return -EINVAL; | |
1114 | ||
1da177e4 LT |
1115 | } |
1116 | ||
1da177e4 | 1117 | /* OSF does not copy back the remaining time. */ |
14e2acd8 | 1118 | return core_sys_select(n, inp, outp, exp, to); |
1da177e4 LT |
1119 | } |
1120 | ||
1121 | struct rusage32 { | |
1122 | struct timeval32 ru_utime; /* user time used */ | |
1123 | struct timeval32 ru_stime; /* system time used */ | |
1124 | long ru_maxrss; /* maximum resident set size */ | |
1125 | long ru_ixrss; /* integral shared memory size */ | |
1126 | long ru_idrss; /* integral unshared data size */ | |
1127 | long ru_isrss; /* integral unshared stack size */ | |
1128 | long ru_minflt; /* page reclaims */ | |
1129 | long ru_majflt; /* page faults */ | |
1130 | long ru_nswap; /* swaps */ | |
1131 | long ru_inblock; /* block input operations */ | |
1132 | long ru_oublock; /* block output operations */ | |
1133 | long ru_msgsnd; /* messages sent */ | |
1134 | long ru_msgrcv; /* messages received */ | |
1135 | long ru_nsignals; /* signals received */ | |
1136 | long ru_nvcsw; /* voluntary context switches */ | |
1137 | long ru_nivcsw; /* involuntary " */ | |
1138 | }; | |
1139 | ||
e5d9a90c | 1140 | SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru) |
1da177e4 LT |
1141 | { |
1142 | struct rusage32 r; | |
6fac4829 | 1143 | cputime_t utime, stime; |
1da177e4 LT |
1144 | |
1145 | if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) | |
1146 | return -EINVAL; | |
1147 | ||
1148 | memset(&r, 0, sizeof(r)); | |
1149 | switch (who) { | |
1150 | case RUSAGE_SELF: | |
6fac4829 FW |
1151 | task_cputime(current, &utime, &stime); |
1152 | jiffies_to_timeval32(utime, &r.ru_utime); | |
1153 | jiffies_to_timeval32(stime, &r.ru_stime); | |
1da177e4 LT |
1154 | r.ru_minflt = current->min_flt; |
1155 | r.ru_majflt = current->maj_flt; | |
1156 | break; | |
1157 | case RUSAGE_CHILDREN: | |
1158 | jiffies_to_timeval32(current->signal->cutime, &r.ru_utime); | |
1159 | jiffies_to_timeval32(current->signal->cstime, &r.ru_stime); | |
1160 | r.ru_minflt = current->signal->cmin_flt; | |
1161 | r.ru_majflt = current->signal->cmaj_flt; | |
1162 | break; | |
1163 | } | |
1164 | ||
1165 | return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0; | |
1166 | } | |
1167 | ||
e5d9a90c IK |
1168 | SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options, |
1169 | struct rusage32 __user *, ur) | |
1da177e4 LT |
1170 | { |
1171 | struct rusage r; | |
1172 | long ret, err; | |
21c5977a | 1173 | unsigned int status = 0; |
1da177e4 LT |
1174 | mm_segment_t old_fs; |
1175 | ||
1176 | if (!ur) | |
1177 | return sys_wait4(pid, ustatus, options, NULL); | |
1178 | ||
1179 | old_fs = get_fs(); | |
1180 | ||
1181 | set_fs (KERNEL_DS); | |
21c5977a DR |
1182 | ret = sys_wait4(pid, (unsigned int __user *) &status, options, |
1183 | (struct rusage __user *) &r); | |
1da177e4 LT |
1184 | set_fs (old_fs); |
1185 | ||
1186 | if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur))) | |
1187 | return -EFAULT; | |
1188 | ||
1189 | err = 0; | |
21c5977a | 1190 | err |= put_user(status, ustatus); |
1da177e4 LT |
1191 | err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec); |
1192 | err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec); | |
1193 | err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec); | |
1194 | err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec); | |
1195 | err |= __put_user(r.ru_maxrss, &ur->ru_maxrss); | |
1196 | err |= __put_user(r.ru_ixrss, &ur->ru_ixrss); | |
1197 | err |= __put_user(r.ru_idrss, &ur->ru_idrss); | |
1198 | err |= __put_user(r.ru_isrss, &ur->ru_isrss); | |
1199 | err |= __put_user(r.ru_minflt, &ur->ru_minflt); | |
1200 | err |= __put_user(r.ru_majflt, &ur->ru_majflt); | |
1201 | err |= __put_user(r.ru_nswap, &ur->ru_nswap); | |
1202 | err |= __put_user(r.ru_inblock, &ur->ru_inblock); | |
1203 | err |= __put_user(r.ru_oublock, &ur->ru_oublock); | |
1204 | err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd); | |
1205 | err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv); | |
1206 | err |= __put_user(r.ru_nsignals, &ur->ru_nsignals); | |
1207 | err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw); | |
1208 | err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw); | |
1209 | ||
1210 | return err ? err : ret; | |
1211 | } | |
1212 | ||
1213 | /* | |
1214 | * I don't know what the parameters are: the first one | |
1215 | * seems to be a timeval pointer, and I suspect the second | |
1216 | * one is the time remaining.. Ho humm.. No documentation. | |
1217 | */ | |
e5d9a90c IK |
1218 | SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep, |
1219 | struct timeval32 __user *, remain) | |
1da177e4 LT |
1220 | { |
1221 | struct timeval tmp; | |
1222 | unsigned long ticks; | |
1223 | ||
1224 | if (get_tv32(&tmp, sleep)) | |
1225 | goto fault; | |
1226 | ||
24d568ed | 1227 | ticks = timeval_to_jiffies(&tmp); |
1da177e4 | 1228 | |
20c6abd1 | 1229 | ticks = schedule_timeout_interruptible(ticks); |
1da177e4 LT |
1230 | |
1231 | if (remain) { | |
24d568ed | 1232 | jiffies_to_timeval(ticks, &tmp); |
1da177e4 LT |
1233 | if (put_tv32(remain, &tmp)) |
1234 | goto fault; | |
1235 | } | |
1236 | ||
1237 | return 0; | |
1238 | fault: | |
1239 | return -EFAULT; | |
1240 | } | |
1241 | ||
1242 | ||
1243 | struct timex32 { | |
1244 | unsigned int modes; /* mode selector */ | |
1245 | long offset; /* time offset (usec) */ | |
1246 | long freq; /* frequency offset (scaled ppm) */ | |
1247 | long maxerror; /* maximum error (usec) */ | |
1248 | long esterror; /* estimated error (usec) */ | |
1249 | int status; /* clock command/status */ | |
1250 | long constant; /* pll time constant */ | |
1251 | long precision; /* clock precision (usec) (read only) */ | |
1252 | long tolerance; /* clock frequency tolerance (ppm) | |
1253 | * (read only) | |
1254 | */ | |
1255 | struct timeval32 time; /* (read only) */ | |
1256 | long tick; /* (modified) usecs between clock ticks */ | |
1257 | ||
1258 | long ppsfreq; /* pps frequency (scaled ppm) (ro) */ | |
1259 | long jitter; /* pps jitter (us) (ro) */ | |
1260 | int shift; /* interval duration (s) (shift) (ro) */ | |
1261 | long stabil; /* pps stability (scaled ppm) (ro) */ | |
1262 | long jitcnt; /* jitter limit exceeded (ro) */ | |
1263 | long calcnt; /* calibration intervals (ro) */ | |
1264 | long errcnt; /* calibration errors (ro) */ | |
1265 | long stbcnt; /* stability limit exceeded (ro) */ | |
1266 | ||
1267 | int :32; int :32; int :32; int :32; | |
1268 | int :32; int :32; int :32; int :32; | |
1269 | int :32; int :32; int :32; int :32; | |
1270 | }; | |
1271 | ||
e5d9a90c | 1272 | SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p) |
1da177e4 LT |
1273 | { |
1274 | struct timex txc; | |
1275 | int ret; | |
1276 | ||
1277 | /* copy relevant bits of struct timex. */ | |
1278 | if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) || | |
1279 | copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) - | |
1280 | offsetof(struct timex32, time))) | |
1281 | return -EFAULT; | |
1282 | ||
1283 | ret = do_adjtimex(&txc); | |
1284 | if (ret < 0) | |
1285 | return ret; | |
1286 | ||
1287 | /* copy back to timex32 */ | |
1288 | if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) || | |
1289 | (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) - | |
1290 | offsetof(struct timex32, tick))) || | |
1291 | (put_tv32(&txc_p->time, &txc.time))) | |
1292 | return -EFAULT; | |
1293 | ||
1294 | return ret; | |
1295 | } | |
1296 | ||
1297 | /* Get an address range which is currently unmapped. Similar to the | |
1298 | generic version except that we know how to honor ADDR_LIMIT_32BIT. */ | |
1299 | ||
1300 | static unsigned long | |
1301 | arch_get_unmapped_area_1(unsigned long addr, unsigned long len, | |
1302 | unsigned long limit) | |
1303 | { | |
6d1c7cca ML |
1304 | struct vm_unmapped_area_info info; |
1305 | ||
1306 | info.flags = 0; | |
1307 | info.length = len; | |
1308 | info.low_limit = addr; | |
1309 | info.high_limit = limit; | |
1310 | info.align_mask = 0; | |
1311 | info.align_offset = 0; | |
1312 | return vm_unmapped_area(&info); | |
1da177e4 LT |
1313 | } |
1314 | ||
1315 | unsigned long | |
1316 | arch_get_unmapped_area(struct file *filp, unsigned long addr, | |
1317 | unsigned long len, unsigned long pgoff, | |
1318 | unsigned long flags) | |
1319 | { | |
1320 | unsigned long limit; | |
1321 | ||
1322 | /* "32 bit" actually means 31 bit, since pointers sign extend. */ | |
1323 | if (current->personality & ADDR_LIMIT_32BIT) | |
1324 | limit = 0x80000000; | |
1325 | else | |
1326 | limit = TASK_SIZE; | |
1327 | ||
1328 | if (len > limit) | |
1329 | return -ENOMEM; | |
1330 | ||
4b87b3b2 BH |
1331 | if (flags & MAP_FIXED) |
1332 | return addr; | |
1333 | ||
1da177e4 LT |
1334 | /* First, see if the given suggestion fits. |
1335 | ||
1336 | The OSF/1 loader (/sbin/loader) relies on us returning an | |
1337 | address larger than the requested if one exists, which is | |
1338 | a terribly broken way to program. | |
1339 | ||
1340 | That said, I can see the use in being able to suggest not | |
1341 | merely specific addresses, but regions of memory -- perhaps | |
1342 | this feature should be incorporated into all ports? */ | |
1343 | ||
1344 | if (addr) { | |
1345 | addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); | |
1346 | if (addr != (unsigned long) -ENOMEM) | |
1347 | return addr; | |
1348 | } | |
1349 | ||
1350 | /* Next, try allocating at TASK_UNMAPPED_BASE. */ | |
1351 | addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), | |
1352 | len, limit); | |
1353 | if (addr != (unsigned long) -ENOMEM) | |
1354 | return addr; | |
1355 | ||
1356 | /* Finally, try allocating in low memory. */ | |
1357 | addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit); | |
1358 | ||
1359 | return addr; | |
1360 | } | |
1361 | ||
1362 | #ifdef CONFIG_OSF4_COMPAT | |
1363 | ||
1364 | /* Clear top 32 bits of iov_len in the user's buffer for | |
1365 | compatibility with old versions of OSF/1 where iov_len | |
1366 | was defined as int. */ | |
1367 | static int | |
1368 | osf_fix_iov_len(const struct iovec __user *iov, unsigned long count) | |
1369 | { | |
1370 | unsigned long i; | |
1371 | ||
1372 | for (i = 0 ; i < count ; i++) { | |
1373 | int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1; | |
1374 | ||
1375 | if (put_user(0, iov_len_high)) | |
1376 | return -EFAULT; | |
1377 | } | |
1378 | return 0; | |
1379 | } | |
1380 | ||
e5d9a90c IK |
1381 | SYSCALL_DEFINE3(osf_readv, unsigned long, fd, |
1382 | const struct iovec __user *, vector, unsigned long, count) | |
1da177e4 LT |
1383 | { |
1384 | if (unlikely(personality(current->personality) == PER_OSF4)) | |
1385 | if (osf_fix_iov_len(vector, count)) | |
1386 | return -EFAULT; | |
1387 | return sys_readv(fd, vector, count); | |
1388 | } | |
1389 | ||
e5d9a90c IK |
1390 | SYSCALL_DEFINE3(osf_writev, unsigned long, fd, |
1391 | const struct iovec __user *, vector, unsigned long, count) | |
1da177e4 LT |
1392 | { |
1393 | if (unlikely(personality(current->personality) == PER_OSF4)) | |
1394 | if (osf_fix_iov_len(vector, count)) | |
1395 | return -EFAULT; | |
1396 | return sys_writev(fd, vector, count); | |
1397 | } | |
1398 | ||
1399 | #endif | |
be53db6e AV |
1400 | |
1401 | SYSCALL_DEFINE2(osf_getpriority, int, which, int, who) | |
1402 | { | |
1403 | int prio = sys_getpriority(which, who); | |
1404 | if (prio >= 0) { | |
1405 | /* Return value is the unbiased priority, i.e. 20 - prio. | |
1406 | This does result in negative return values, so signal | |
1407 | no error */ | |
1408 | force_successful_syscall_return(); | |
1409 | prio = 20 - prio; | |
1410 | } | |
1411 | return prio; | |
1412 | } | |
1413 | ||
1414 | SYSCALL_DEFINE0(getxuid) | |
1415 | { | |
1416 | current_pt_regs()->r20 = sys_geteuid(); | |
1417 | return sys_getuid(); | |
1418 | } | |
1419 | ||
1420 | SYSCALL_DEFINE0(getxgid) | |
1421 | { | |
1422 | current_pt_regs()->r20 = sys_getegid(); | |
1423 | return sys_getgid(); | |
1424 | } | |
1425 | ||
1426 | SYSCALL_DEFINE0(getxpid) | |
1427 | { | |
1428 | current_pt_regs()->r20 = sys_getppid(); | |
1429 | return sys_getpid(); | |
1430 | } | |
1431 | ||
1432 | SYSCALL_DEFINE0(alpha_pipe) | |
1433 | { | |
1434 | int fd[2]; | |
1435 | int res = do_pipe_flags(fd, 0); | |
1436 | if (!res) { | |
1437 | /* The return values are in $0 and $20. */ | |
1438 | current_pt_regs()->r20 = fd[1]; | |
1439 | res = fd[0]; | |
1440 | } | |
1441 | return res; | |
1442 | } | |
1443 | ||
1444 | SYSCALL_DEFINE1(sethae, unsigned long, val) | |
1445 | { | |
1446 | current_pt_regs()->hae = val; | |
1447 | return 0; | |
1448 | } |