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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> | |
7c0f6ba6 | 42 | #include <linux/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 { | |
5c0ba4e0 | 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 | |
ac7576f4 MS |
107 | osf_filldir(struct dir_context *ctx, const char *name, int namlen, |
108 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 LT |
109 | { |
110 | struct osf_dirent __user *dirent; | |
ac7576f4 MS |
111 | struct osf_dirent_callback *buf = |
112 | container_of(ctx, struct osf_dirent_callback, ctx); | |
180e53a7 | 113 | unsigned int reclen = ALIGN(NAME_OFFSET + namlen + 1, sizeof(u32)); |
afefdbb2 | 114 | unsigned int d_ino; |
1da177e4 LT |
115 | |
116 | buf->error = -EINVAL; /* only used if we fail */ | |
117 | if (reclen > buf->count) | |
118 | return -EINVAL; | |
afefdbb2 | 119 | d_ino = ino; |
645e68ed AV |
120 | if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) { |
121 | buf->error = -EOVERFLOW; | |
afefdbb2 | 122 | return -EOVERFLOW; |
645e68ed | 123 | } |
1da177e4 LT |
124 | if (buf->basep) { |
125 | if (put_user(offset, buf->basep)) | |
645e68ed | 126 | goto Efault; |
1da177e4 LT |
127 | buf->basep = NULL; |
128 | } | |
129 | dirent = buf->dirent; | |
645e68ed AV |
130 | if (put_user(d_ino, &dirent->d_ino) || |
131 | put_user(namlen, &dirent->d_namlen) || | |
132 | put_user(reclen, &dirent->d_reclen) || | |
133 | copy_to_user(dirent->d_name, name, namlen) || | |
1da177e4 | 134 | put_user(0, dirent->d_name + namlen)) |
645e68ed | 135 | goto Efault; |
1da177e4 LT |
136 | dirent = (void __user *)dirent + reclen; |
137 | buf->dirent = dirent; | |
138 | buf->count -= reclen; | |
139 | return 0; | |
645e68ed AV |
140 | Efault: |
141 | buf->error = -EFAULT; | |
142 | return -EFAULT; | |
1da177e4 LT |
143 | } |
144 | ||
e5d9a90c IK |
145 | SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd, |
146 | struct osf_dirent __user *, dirent, unsigned int, count, | |
147 | long __user *, basep) | |
1da177e4 LT |
148 | { |
149 | int error; | |
63b6df14 | 150 | struct fd arg = fdget_pos(fd); |
ac6614b7 AV |
151 | struct osf_dirent_callback buf = { |
152 | .ctx.actor = osf_filldir, | |
153 | .dirent = dirent, | |
154 | .basep = basep, | |
155 | .count = count | |
156 | }; | |
1da177e4 | 157 | |
2903ff01 AV |
158 | if (!arg.file) |
159 | return -EBADF; | |
1da177e4 | 160 | |
5c0ba4e0 | 161 | error = iterate_dir(arg.file, &buf.ctx); |
53c9c5c0 AV |
162 | if (error >= 0) |
163 | error = buf.error; | |
1da177e4 LT |
164 | if (count != buf.count) |
165 | error = count - buf.count; | |
166 | ||
63b6df14 | 167 | fdput_pos(arg); |
1da177e4 LT |
168 | return error; |
169 | } | |
170 | ||
1da177e4 LT |
171 | #undef NAME_OFFSET |
172 | ||
e5d9a90c IK |
173 | SYSCALL_DEFINE6(osf_mmap, unsigned long, addr, unsigned long, len, |
174 | unsigned long, prot, unsigned long, flags, unsigned long, fd, | |
175 | unsigned long, off) | |
1da177e4 | 176 | { |
f8b72560 | 177 | unsigned long ret = -EINVAL; |
1da177e4 LT |
178 | |
179 | #if 0 | |
180 | if (flags & (_MAP_HASSEMAPHORE | _MAP_INHERIT | _MAP_UNALIGNED)) | |
181 | printk("%s: unimplemented OSF mmap flags %04lx\n", | |
182 | current->comm, flags); | |
183 | #endif | |
f8b72560 AV |
184 | if ((off + PAGE_ALIGN(len)) < off) |
185 | goto out; | |
186 | if (off & ~PAGE_MASK) | |
187 | goto out; | |
188 | ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); | |
1da177e4 LT |
189 | out: |
190 | return ret; | |
191 | } | |
192 | ||
7a8bb98c MR |
193 | struct osf_stat { |
194 | int st_dev; | |
195 | int st_pad1; | |
196 | unsigned st_mode; | |
197 | unsigned short st_nlink; | |
198 | short st_nlink_reserved; | |
199 | unsigned st_uid; | |
200 | unsigned st_gid; | |
201 | int st_rdev; | |
202 | int st_ldev; | |
203 | long st_size; | |
204 | int st_pad2; | |
205 | int st_uatime; | |
206 | int st_pad3; | |
207 | int st_umtime; | |
208 | int st_pad4; | |
209 | int st_uctime; | |
210 | int st_pad5; | |
211 | int st_pad6; | |
212 | unsigned st_flags; | |
213 | unsigned st_gen; | |
214 | long st_spare[4]; | |
215 | unsigned st_ino; | |
216 | int st_ino_reserved; | |
217 | int st_atime; | |
218 | int st_atime_reserved; | |
219 | int st_mtime; | |
220 | int st_mtime_reserved; | |
221 | int st_ctime; | |
222 | int st_ctime_reserved; | |
223 | long st_blksize; | |
224 | long st_blocks; | |
225 | }; | |
1da177e4 LT |
226 | |
227 | /* | |
228 | * The OSF/1 statfs structure is much larger, but this should | |
229 | * match the beginning, at least. | |
230 | */ | |
231 | struct osf_statfs { | |
232 | short f_type; | |
233 | short f_flags; | |
234 | int f_fsize; | |
235 | int f_bsize; | |
236 | int f_blocks; | |
237 | int f_bfree; | |
238 | int f_bavail; | |
239 | int f_files; | |
240 | int f_ffree; | |
241 | __kernel_fsid_t f_fsid; | |
242 | }; | |
243 | ||
7a8bb98c MR |
244 | struct osf_statfs64 { |
245 | short f_type; | |
246 | short f_flags; | |
247 | int f_pad1; | |
248 | int f_pad2; | |
249 | int f_pad3; | |
250 | int f_pad4; | |
251 | int f_pad5; | |
252 | int f_pad6; | |
253 | int f_pad7; | |
254 | __kernel_fsid_t f_fsid; | |
255 | u_short f_namemax; | |
256 | short f_reserved1; | |
257 | int f_spare[8]; | |
258 | char f_pad8[90]; | |
259 | char f_pad9[90]; | |
260 | long mount_info[10]; | |
261 | u_long f_flags2; | |
262 | long f_spare2[14]; | |
263 | long f_fsize; | |
264 | long f_bsize; | |
265 | long f_blocks; | |
266 | long f_bfree; | |
267 | long f_bavail; | |
268 | long f_files; | |
269 | long f_ffree; | |
270 | }; | |
271 | ||
272 | static int | |
273 | linux_to_osf_stat(struct kstat *lstat, struct osf_stat __user *osf_stat) | |
274 | { | |
275 | struct osf_stat tmp = { 0 }; | |
276 | ||
277 | tmp.st_dev = lstat->dev; | |
278 | tmp.st_mode = lstat->mode; | |
279 | tmp.st_nlink = lstat->nlink; | |
f31389d5 EB |
280 | tmp.st_uid = from_kuid_munged(current_user_ns(), lstat->uid); |
281 | tmp.st_gid = from_kgid_munged(current_user_ns(), lstat->gid); | |
7a8bb98c MR |
282 | tmp.st_rdev = lstat->rdev; |
283 | tmp.st_ldev = lstat->rdev; | |
284 | tmp.st_size = lstat->size; | |
285 | tmp.st_uatime = lstat->atime.tv_nsec / 1000; | |
286 | tmp.st_umtime = lstat->mtime.tv_nsec / 1000; | |
287 | tmp.st_uctime = lstat->ctime.tv_nsec / 1000; | |
288 | tmp.st_ino = lstat->ino; | |
289 | tmp.st_atime = lstat->atime.tv_sec; | |
290 | tmp.st_mtime = lstat->mtime.tv_sec; | |
291 | tmp.st_ctime = lstat->ctime.tv_sec; | |
292 | tmp.st_blksize = lstat->blksize; | |
293 | tmp.st_blocks = lstat->blocks; | |
294 | ||
295 | return copy_to_user(osf_stat, &tmp, sizeof(tmp)) ? -EFAULT : 0; | |
296 | } | |
297 | ||
1da177e4 LT |
298 | static int |
299 | linux_to_osf_statfs(struct kstatfs *linux_stat, struct osf_statfs __user *osf_stat, | |
300 | unsigned long bufsiz) | |
301 | { | |
302 | struct osf_statfs tmp_stat; | |
303 | ||
304 | tmp_stat.f_type = linux_stat->f_type; | |
305 | tmp_stat.f_flags = 0; /* mount flags */ | |
306 | tmp_stat.f_fsize = linux_stat->f_frsize; | |
307 | tmp_stat.f_bsize = linux_stat->f_bsize; | |
308 | tmp_stat.f_blocks = linux_stat->f_blocks; | |
309 | tmp_stat.f_bfree = linux_stat->f_bfree; | |
310 | tmp_stat.f_bavail = linux_stat->f_bavail; | |
311 | tmp_stat.f_files = linux_stat->f_files; | |
312 | tmp_stat.f_ffree = linux_stat->f_ffree; | |
313 | tmp_stat.f_fsid = linux_stat->f_fsid; | |
314 | if (bufsiz > sizeof(tmp_stat)) | |
315 | bufsiz = sizeof(tmp_stat); | |
316 | return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; | |
317 | } | |
318 | ||
7a8bb98c MR |
319 | static int |
320 | linux_to_osf_statfs64(struct kstatfs *linux_stat, struct osf_statfs64 __user *osf_stat, | |
321 | unsigned long bufsiz) | |
322 | { | |
323 | struct osf_statfs64 tmp_stat = { 0 }; | |
324 | ||
325 | tmp_stat.f_type = linux_stat->f_type; | |
326 | tmp_stat.f_fsize = linux_stat->f_frsize; | |
327 | tmp_stat.f_bsize = linux_stat->f_bsize; | |
328 | tmp_stat.f_blocks = linux_stat->f_blocks; | |
329 | tmp_stat.f_bfree = linux_stat->f_bfree; | |
330 | tmp_stat.f_bavail = linux_stat->f_bavail; | |
331 | tmp_stat.f_files = linux_stat->f_files; | |
332 | tmp_stat.f_ffree = linux_stat->f_ffree; | |
333 | tmp_stat.f_fsid = linux_stat->f_fsid; | |
334 | if (bufsiz > sizeof(tmp_stat)) | |
335 | bufsiz = sizeof(tmp_stat); | |
336 | return copy_to_user(osf_stat, &tmp_stat, bufsiz) ? -EFAULT : 0; | |
337 | } | |
338 | ||
c8b91acc AV |
339 | SYSCALL_DEFINE3(osf_statfs, const char __user *, pathname, |
340 | struct osf_statfs __user *, buffer, unsigned long, bufsiz) | |
1da177e4 LT |
341 | { |
342 | struct kstatfs linux_stat; | |
c8b91acc | 343 | int error = user_statfs(pathname, &linux_stat); |
1da177e4 LT |
344 | if (!error) |
345 | error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); | |
346 | return error; | |
347 | } | |
348 | ||
7a8bb98c MR |
349 | SYSCALL_DEFINE2(osf_stat, char __user *, name, struct osf_stat __user *, buf) |
350 | { | |
351 | struct kstat stat; | |
352 | int error; | |
353 | ||
354 | error = vfs_stat(name, &stat); | |
355 | if (error) | |
356 | return error; | |
357 | ||
358 | return linux_to_osf_stat(&stat, buf); | |
359 | } | |
360 | ||
361 | SYSCALL_DEFINE2(osf_lstat, char __user *, name, struct osf_stat __user *, buf) | |
362 | { | |
363 | struct kstat stat; | |
364 | int error; | |
365 | ||
366 | error = vfs_lstat(name, &stat); | |
367 | if (error) | |
368 | return error; | |
369 | ||
370 | return linux_to_osf_stat(&stat, buf); | |
371 | } | |
372 | ||
373 | SYSCALL_DEFINE2(osf_fstat, int, fd, struct osf_stat __user *, buf) | |
374 | { | |
375 | struct kstat stat; | |
376 | int error; | |
377 | ||
378 | error = vfs_fstat(fd, &stat); | |
379 | if (error) | |
380 | return error; | |
381 | ||
382 | return linux_to_osf_stat(&stat, buf); | |
383 | } | |
384 | ||
e5d9a90c IK |
385 | SYSCALL_DEFINE3(osf_fstatfs, unsigned long, fd, |
386 | struct osf_statfs __user *, buffer, unsigned long, bufsiz) | |
1da177e4 | 387 | { |
c8b91acc AV |
388 | struct kstatfs linux_stat; |
389 | int error = fd_statfs(fd, &linux_stat); | |
390 | if (!error) | |
391 | error = linux_to_osf_statfs(&linux_stat, buffer, bufsiz); | |
392 | return error; | |
1da177e4 LT |
393 | } |
394 | ||
7a8bb98c MR |
395 | SYSCALL_DEFINE3(osf_statfs64, char __user *, pathname, |
396 | struct osf_statfs64 __user *, buffer, unsigned long, bufsiz) | |
397 | { | |
398 | struct kstatfs linux_stat; | |
399 | int error = user_statfs(pathname, &linux_stat); | |
400 | if (!error) | |
401 | error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz); | |
402 | return error; | |
403 | } | |
404 | ||
405 | SYSCALL_DEFINE3(osf_fstatfs64, unsigned long, fd, | |
406 | struct osf_statfs64 __user *, buffer, unsigned long, bufsiz) | |
407 | { | |
408 | struct kstatfs linux_stat; | |
409 | int error = fd_statfs(fd, &linux_stat); | |
410 | if (!error) | |
411 | error = linux_to_osf_statfs64(&linux_stat, buffer, bufsiz); | |
412 | return error; | |
413 | } | |
414 | ||
1da177e4 LT |
415 | /* |
416 | * Uhh.. OSF/1 mount parameters aren't exactly obvious.. | |
417 | * | |
418 | * Although to be frank, neither are the native Linux/i386 ones.. | |
419 | */ | |
420 | struct ufs_args { | |
421 | char __user *devname; | |
422 | int flags; | |
423 | uid_t exroot; | |
424 | }; | |
425 | ||
426 | struct cdfs_args { | |
427 | char __user *devname; | |
428 | int flags; | |
429 | uid_t exroot; | |
430 | ||
431 | /* This has lots more here, which Linux handles with the option block | |
432 | but I'm too lazy to do the translation into ASCII. */ | |
433 | }; | |
434 | ||
435 | struct procfs_args { | |
436 | char __user *devname; | |
437 | int flags; | |
438 | uid_t exroot; | |
439 | }; | |
440 | ||
441 | /* | |
442 | * We can't actually handle ufs yet, so we translate UFS mounts to | |
443 | * ext2fs mounts. I wouldn't mind a UFS filesystem, but the UFS | |
444 | * layout is so braindead it's a major headache doing it. | |
445 | * | |
446 | * Just how long ago was it written? OTOH our UFS driver may be still | |
447 | * unhappy with OSF UFS. [CHECKME] | |
448 | */ | |
449 | static int | |
5e6123f3 SL |
450 | osf_ufs_mount(const char __user *dirname, |
451 | struct ufs_args __user *args, int flags) | |
1da177e4 LT |
452 | { |
453 | int retval; | |
454 | struct cdfs_args tmp; | |
91a27b2a | 455 | struct filename *devname; |
1da177e4 LT |
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; | |
91a27b2a | 464 | retval = do_mount(devname->name, dirname, "ext2", flags, NULL); |
1da177e4 LT |
465 | putname(devname); |
466 | out: | |
467 | return retval; | |
468 | } | |
469 | ||
470 | static int | |
5e6123f3 SL |
471 | osf_cdfs_mount(const char __user *dirname, |
472 | struct cdfs_args __user *args, int flags) | |
1da177e4 LT |
473 | { |
474 | int retval; | |
475 | struct cdfs_args tmp; | |
91a27b2a | 476 | struct filename *devname; |
1da177e4 LT |
477 | |
478 | retval = -EFAULT; | |
479 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
480 | goto out; | |
481 | devname = getname(tmp.devname); | |
482 | retval = PTR_ERR(devname); | |
483 | if (IS_ERR(devname)) | |
484 | goto out; | |
91a27b2a | 485 | retval = do_mount(devname->name, dirname, "iso9660", flags, NULL); |
1da177e4 LT |
486 | putname(devname); |
487 | out: | |
488 | return retval; | |
489 | } | |
490 | ||
491 | static int | |
5e6123f3 SL |
492 | osf_procfs_mount(const char __user *dirname, |
493 | struct procfs_args __user *args, int flags) | |
1da177e4 LT |
494 | { |
495 | struct procfs_args tmp; | |
496 | ||
497 | if (copy_from_user(&tmp, args, sizeof(tmp))) | |
498 | return -EFAULT; | |
499 | ||
500 | return do_mount("", dirname, "proc", flags, NULL); | |
501 | } | |
502 | ||
c7887325 | 503 | SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path, |
e5d9a90c | 504 | int, flag, void __user *, data) |
1da177e4 | 505 | { |
77079dbe | 506 | int retval; |
1da177e4 | 507 | |
1da177e4 LT |
508 | switch (typenr) { |
509 | case 1: | |
5e6123f3 | 510 | retval = osf_ufs_mount(path, data, flag); |
1da177e4 LT |
511 | break; |
512 | case 6: | |
5e6123f3 | 513 | retval = osf_cdfs_mount(path, data, flag); |
1da177e4 LT |
514 | break; |
515 | case 9: | |
5e6123f3 | 516 | retval = osf_procfs_mount(path, data, flag); |
1da177e4 LT |
517 | break; |
518 | default: | |
77079dbe | 519 | retval = -EINVAL; |
1da177e4 LT |
520 | printk("osf_mount(%ld, %x)\n", typenr, flag); |
521 | } | |
5e6123f3 | 522 | |
1da177e4 LT |
523 | return retval; |
524 | } | |
525 | ||
e5d9a90c | 526 | SYSCALL_DEFINE1(osf_utsname, char __user *, name) |
1da177e4 LT |
527 | { |
528 | int error; | |
529 | ||
530 | down_read(&uts_sem); | |
531 | error = -EFAULT; | |
e9ff3990 | 532 | if (copy_to_user(name + 0, utsname()->sysname, 32)) |
1da177e4 | 533 | goto out; |
e9ff3990 | 534 | if (copy_to_user(name + 32, utsname()->nodename, 32)) |
1da177e4 | 535 | goto out; |
e9ff3990 | 536 | if (copy_to_user(name + 64, utsname()->release, 32)) |
1da177e4 | 537 | goto out; |
e9ff3990 | 538 | if (copy_to_user(name + 96, utsname()->version, 32)) |
1da177e4 | 539 | goto out; |
e9ff3990 | 540 | if (copy_to_user(name + 128, utsname()->machine, 32)) |
1da177e4 LT |
541 | goto out; |
542 | ||
543 | error = 0; | |
544 | out: | |
545 | up_read(&uts_sem); | |
546 | return error; | |
547 | } | |
548 | ||
e5d9a90c | 549 | SYSCALL_DEFINE0(getpagesize) |
1da177e4 LT |
550 | { |
551 | return PAGE_SIZE; | |
552 | } | |
553 | ||
e5d9a90c | 554 | SYSCALL_DEFINE0(getdtablesize) |
1da177e4 | 555 | { |
9cfe015a | 556 | return sysctl_nr_open; |
1da177e4 LT |
557 | } |
558 | ||
559 | /* | |
560 | * For compatibility with OSF/1 only. Use utsname(2) instead. | |
561 | */ | |
e5d9a90c | 562 | SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen) |
1da177e4 LT |
563 | { |
564 | unsigned len; | |
565 | int i; | |
566 | ||
567 | if (!access_ok(VERIFY_WRITE, name, namelen)) | |
568 | return -EFAULT; | |
569 | ||
570 | len = namelen; | |
21c5977a | 571 | if (len > 32) |
1da177e4 LT |
572 | len = 32; |
573 | ||
574 | down_read(&uts_sem); | |
575 | for (i = 0; i < len; ++i) { | |
e9ff3990 SH |
576 | __put_user(utsname()->domainname[i], name + i); |
577 | if (utsname()->domainname[i] == '\0') | |
1da177e4 LT |
578 | break; |
579 | } | |
580 | up_read(&uts_sem); | |
581 | ||
582 | return 0; | |
583 | } | |
584 | ||
1da177e4 LT |
585 | /* |
586 | * The following stuff should move into a header file should it ever | |
587 | * be labeled "officially supported." Right now, there is just enough | |
588 | * support to avoid applications (such as tar) printing error | |
589 | * messages. The attributes are not really implemented. | |
590 | */ | |
591 | ||
592 | /* | |
593 | * Values for Property list entry flag | |
594 | */ | |
595 | #define PLE_PROPAGATE_ON_COPY 0x1 /* cp(1) will copy entry | |
596 | by default */ | |
597 | #define PLE_FLAG_MASK 0x1 /* Valid flag values */ | |
598 | #define PLE_FLAG_ALL -1 /* All flag value */ | |
599 | ||
600 | struct proplistname_args { | |
601 | unsigned int pl_mask; | |
602 | unsigned int pl_numnames; | |
603 | char **pl_names; | |
604 | }; | |
605 | ||
606 | union pl_args { | |
607 | struct setargs { | |
608 | char __user *path; | |
609 | long follow; | |
610 | long nbytes; | |
611 | char __user *buf; | |
612 | } set; | |
613 | struct fsetargs { | |
614 | long fd; | |
615 | long nbytes; | |
616 | char __user *buf; | |
617 | } fset; | |
618 | struct getargs { | |
619 | char __user *path; | |
620 | long follow; | |
621 | struct proplistname_args __user *name_args; | |
622 | long nbytes; | |
623 | char __user *buf; | |
624 | int __user *min_buf_size; | |
625 | } get; | |
626 | struct fgetargs { | |
627 | long fd; | |
628 | struct proplistname_args __user *name_args; | |
629 | long nbytes; | |
630 | char __user *buf; | |
631 | int __user *min_buf_size; | |
632 | } fget; | |
633 | struct delargs { | |
634 | char __user *path; | |
635 | long follow; | |
636 | struct proplistname_args __user *name_args; | |
637 | } del; | |
638 | struct fdelargs { | |
639 | long fd; | |
640 | struct proplistname_args __user *name_args; | |
641 | } fdel; | |
642 | }; | |
643 | ||
644 | enum pl_code { | |
645 | PL_SET = 1, PL_FSET = 2, | |
646 | PL_GET = 3, PL_FGET = 4, | |
647 | PL_DEL = 5, PL_FDEL = 6 | |
648 | }; | |
649 | ||
e5d9a90c IK |
650 | SYSCALL_DEFINE2(osf_proplist_syscall, enum pl_code, code, |
651 | union pl_args __user *, args) | |
1da177e4 LT |
652 | { |
653 | long error; | |
654 | int __user *min_buf_size_ptr; | |
655 | ||
1da177e4 LT |
656 | switch (code) { |
657 | case PL_SET: | |
658 | if (get_user(error, &args->set.nbytes)) | |
659 | error = -EFAULT; | |
660 | break; | |
661 | case PL_FSET: | |
662 | if (get_user(error, &args->fset.nbytes)) | |
663 | error = -EFAULT; | |
664 | break; | |
665 | case PL_GET: | |
666 | error = get_user(min_buf_size_ptr, &args->get.min_buf_size); | |
667 | if (error) | |
668 | break; | |
669 | error = put_user(0, min_buf_size_ptr); | |
670 | break; | |
671 | case PL_FGET: | |
672 | error = get_user(min_buf_size_ptr, &args->fget.min_buf_size); | |
673 | if (error) | |
674 | break; | |
675 | error = put_user(0, min_buf_size_ptr); | |
676 | break; | |
677 | case PL_DEL: | |
678 | case PL_FDEL: | |
679 | error = 0; | |
680 | break; | |
681 | default: | |
682 | error = -EOPNOTSUPP; | |
683 | break; | |
684 | }; | |
1da177e4 LT |
685 | return error; |
686 | } | |
687 | ||
e5d9a90c IK |
688 | SYSCALL_DEFINE2(osf_sigstack, struct sigstack __user *, uss, |
689 | struct sigstack __user *, uoss) | |
1da177e4 LT |
690 | { |
691 | unsigned long usp = rdusp(); | |
692 | unsigned long oss_sp = current->sas_ss_sp + current->sas_ss_size; | |
693 | unsigned long oss_os = on_sig_stack(usp); | |
694 | int error; | |
695 | ||
696 | if (uss) { | |
697 | void __user *ss_sp; | |
698 | ||
699 | error = -EFAULT; | |
700 | if (get_user(ss_sp, &uss->ss_sp)) | |
701 | goto out; | |
702 | ||
703 | /* If the current stack was set with sigaltstack, don't | |
704 | swap stacks while we are on it. */ | |
705 | error = -EPERM; | |
706 | if (current->sas_ss_sp && on_sig_stack(usp)) | |
707 | goto out; | |
708 | ||
709 | /* Since we don't know the extent of the stack, and we don't | |
710 | track onstack-ness, but rather calculate it, we must | |
711 | presume a size. Ho hum this interface is lossy. */ | |
712 | current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ; | |
713 | current->sas_ss_size = SIGSTKSZ; | |
714 | } | |
715 | ||
716 | if (uoss) { | |
717 | error = -EFAULT; | |
718 | if (! access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)) | |
719 | || __put_user(oss_sp, &uoss->ss_sp) | |
720 | || __put_user(oss_os, &uoss->ss_onstack)) | |
721 | goto out; | |
722 | } | |
723 | ||
724 | error = 0; | |
725 | out: | |
726 | return error; | |
727 | } | |
728 | ||
e5d9a90c | 729 | SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count) |
1da177e4 | 730 | { |
31019075 | 731 | const char *sysinfo_table[] = { |
e9ff3990 SH |
732 | utsname()->sysname, |
733 | utsname()->nodename, | |
734 | utsname()->release, | |
735 | utsname()->version, | |
736 | utsname()->machine, | |
1da177e4 LT |
737 | "alpha", /* instruction set architecture */ |
738 | "dummy", /* hardware serial number */ | |
739 | "dummy", /* hardware manufacturer */ | |
740 | "dummy", /* secure RPC domain */ | |
741 | }; | |
742 | unsigned long offset; | |
31019075 | 743 | const char *res; |
1da177e4 LT |
744 | long len, err = -EINVAL; |
745 | ||
746 | offset = command-1; | |
25c8716c | 747 | if (offset >= ARRAY_SIZE(sysinfo_table)) { |
1da177e4 LT |
748 | /* Digital UNIX has a few unpublished interfaces here */ |
749 | printk("sysinfo(%d)", command); | |
750 | goto out; | |
751 | } | |
25c8716c | 752 | |
1da177e4 LT |
753 | down_read(&uts_sem); |
754 | res = sysinfo_table[offset]; | |
755 | len = strlen(res)+1; | |
21c5977a | 756 | if ((unsigned long)len > (unsigned long)count) |
1da177e4 LT |
757 | len = count; |
758 | if (copy_to_user(buf, res, len)) | |
759 | err = -EFAULT; | |
760 | else | |
761 | err = 0; | |
762 | up_read(&uts_sem); | |
763 | out: | |
764 | return err; | |
765 | } | |
766 | ||
e5d9a90c IK |
767 | SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer, |
768 | unsigned long, nbytes, int __user *, start, void __user *, arg) | |
1da177e4 LT |
769 | { |
770 | unsigned long w; | |
771 | struct percpu_struct *cpu; | |
772 | ||
773 | switch (op) { | |
774 | case GSI_IEEE_FP_CONTROL: | |
775 | /* Return current software fp control & status bits. */ | |
776 | /* Note that DU doesn't verify available space here. */ | |
777 | ||
778 | w = current_thread_info()->ieee_state & IEEE_SW_MASK; | |
779 | w = swcr_update_status(w, rdfpcr()); | |
780 | if (put_user(w, (unsigned long __user *) buffer)) | |
781 | return -EFAULT; | |
782 | return 0; | |
783 | ||
784 | case GSI_IEEE_STATE_AT_SIGNAL: | |
785 | /* | |
786 | * Not sure anybody will ever use this weird stuff. These | |
787 | * ops can be used (under OSF/1) to set the fpcr that should | |
788 | * be used when a signal handler starts executing. | |
789 | */ | |
790 | break; | |
791 | ||
792 | case GSI_UACPROC: | |
793 | if (nbytes < sizeof(unsigned int)) | |
794 | return -EINVAL; | |
3185bd26 | 795 | w = current_thread_info()->status & UAC_BITMASK; |
2df7a7d1 ST |
796 | if (put_user(w, (unsigned int __user *)buffer)) |
797 | return -EFAULT; | |
1da177e4 LT |
798 | return 1; |
799 | ||
800 | case GSI_PROC_TYPE: | |
801 | if (nbytes < sizeof(unsigned long)) | |
802 | return -EINVAL; | |
803 | cpu = (struct percpu_struct*) | |
804 | ((char*)hwrpb + hwrpb->processor_offset); | |
805 | w = cpu->type; | |
806 | if (put_user(w, (unsigned long __user*)buffer)) | |
807 | return -EFAULT; | |
808 | return 1; | |
809 | ||
810 | case GSI_GET_HWRPB: | |
21c5977a | 811 | if (nbytes > sizeof(*hwrpb)) |
1da177e4 LT |
812 | return -EINVAL; |
813 | if (copy_to_user(buffer, hwrpb, nbytes) != 0) | |
814 | return -EFAULT; | |
815 | return 1; | |
816 | ||
817 | default: | |
818 | break; | |
819 | } | |
820 | ||
821 | return -EOPNOTSUPP; | |
822 | } | |
823 | ||
e5d9a90c IK |
824 | SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer, |
825 | unsigned long, nbytes, int __user *, start, void __user *, arg) | |
1da177e4 LT |
826 | { |
827 | switch (op) { | |
828 | case SSI_IEEE_FP_CONTROL: { | |
829 | unsigned long swcr, fpcr; | |
830 | unsigned int *state; | |
831 | ||
832 | /* | |
833 | * Alpha Architecture Handbook 4.7.7.3: | |
834 | * To be fully IEEE compiant, we must track the current IEEE | |
c3a2ddee | 835 | * exception state in software, because spurious bits can be |
1da177e4 LT |
836 | * set in the trap shadow of a software-complete insn. |
837 | */ | |
838 | ||
839 | if (get_user(swcr, (unsigned long __user *)buffer)) | |
840 | return -EFAULT; | |
841 | state = ¤t_thread_info()->ieee_state; | |
842 | ||
843 | /* Update softare trap enable bits. */ | |
844 | *state = (*state & ~IEEE_SW_MASK) | (swcr & IEEE_SW_MASK); | |
845 | ||
846 | /* Update the real fpcr. */ | |
847 | fpcr = rdfpcr() & FPCR_DYN_MASK; | |
848 | fpcr |= ieee_swcr_to_fpcr(swcr); | |
849 | wrfpcr(fpcr); | |
850 | ||
851 | return 0; | |
852 | } | |
853 | ||
854 | case SSI_IEEE_RAISE_EXCEPTION: { | |
855 | unsigned long exc, swcr, fpcr, fex; | |
856 | unsigned int *state; | |
857 | ||
858 | if (get_user(exc, (unsigned long __user *)buffer)) | |
859 | return -EFAULT; | |
860 | state = ¤t_thread_info()->ieee_state; | |
861 | exc &= IEEE_STATUS_MASK; | |
862 | ||
863 | /* Update softare trap enable bits. */ | |
864 | swcr = (*state & IEEE_SW_MASK) | exc; | |
865 | *state |= exc; | |
866 | ||
867 | /* Update the real fpcr. */ | |
868 | fpcr = rdfpcr(); | |
869 | fpcr |= ieee_swcr_to_fpcr(swcr); | |
870 | wrfpcr(fpcr); | |
871 | ||
872 | /* If any exceptions set by this call, and are unmasked, | |
873 | send a signal. Old exceptions are not signaled. */ | |
874 | fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr; | |
875 | if (fex) { | |
876 | siginfo_t info; | |
877 | int si_code = 0; | |
878 | ||
879 | if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND; | |
880 | if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES; | |
881 | if (fex & IEEE_TRAP_ENABLE_UNF) si_code = FPE_FLTUND; | |
882 | if (fex & IEEE_TRAP_ENABLE_OVF) si_code = FPE_FLTOVF; | |
883 | if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV; | |
884 | if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV; | |
885 | ||
886 | info.si_signo = SIGFPE; | |
887 | info.si_errno = 0; | |
888 | info.si_code = si_code; | |
889 | info.si_addr = NULL; /* FIXME */ | |
890 | send_sig_info(SIGFPE, &info, current); | |
891 | } | |
892 | return 0; | |
893 | } | |
894 | ||
895 | case SSI_IEEE_STATE_AT_SIGNAL: | |
896 | case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: | |
897 | /* | |
898 | * Not sure anybody will ever use this weird stuff. These | |
899 | * ops can be used (under OSF/1) to set the fpcr that should | |
900 | * be used when a signal handler starts executing. | |
901 | */ | |
902 | break; | |
903 | ||
904 | case SSI_NVPAIRS: { | |
3185bd26 AV |
905 | unsigned __user *p = buffer; |
906 | unsigned i; | |
1da177e4 | 907 | |
3185bd26 AV |
908 | for (i = 0, p = buffer; i < nbytes; ++i, p += 2) { |
909 | unsigned v, w, status; | |
1da177e4 | 910 | |
3185bd26 | 911 | if (get_user(v, p) || get_user(w, p + 1)) |
1da177e4 LT |
912 | return -EFAULT; |
913 | switch (v) { | |
914 | case SSIN_UACPROC: | |
3185bd26 AV |
915 | w &= UAC_BITMASK; |
916 | status = current_thread_info()->status; | |
917 | status = (status & ~UAC_BITMASK) | w; | |
918 | current_thread_info()->status = status; | |
1da177e4 LT |
919 | break; |
920 | ||
921 | default: | |
922 | return -EOPNOTSUPP; | |
923 | } | |
924 | } | |
925 | return 0; | |
926 | } | |
927 | ||
50744dee MR |
928 | case SSI_LMF: |
929 | return 0; | |
930 | ||
1da177e4 LT |
931 | default: |
932 | break; | |
933 | } | |
934 | ||
935 | return -EOPNOTSUPP; | |
936 | } | |
937 | ||
938 | /* Translations due to the fact that OSF's time_t is an int. Which | |
939 | affects all sorts of things, like timeval and itimerval. */ | |
940 | ||
941 | extern struct timezone sys_tz; | |
1da177e4 LT |
942 | |
943 | struct timeval32 | |
944 | { | |
945 | int tv_sec, tv_usec; | |
946 | }; | |
947 | ||
948 | struct itimerval32 | |
949 | { | |
950 | struct timeval32 it_interval; | |
951 | struct timeval32 it_value; | |
952 | }; | |
953 | ||
954 | static inline long | |
955 | get_tv32(struct timeval *o, struct timeval32 __user *i) | |
956 | { | |
957 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
958 | (__get_user(o->tv_sec, &i->tv_sec) | | |
959 | __get_user(o->tv_usec, &i->tv_usec))); | |
960 | } | |
961 | ||
962 | static inline long | |
963 | put_tv32(struct timeval32 __user *o, struct timeval *i) | |
964 | { | |
965 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
966 | (__put_user(i->tv_sec, &o->tv_sec) | | |
967 | __put_user(i->tv_usec, &o->tv_usec))); | |
968 | } | |
969 | ||
970 | static inline long | |
971 | get_it32(struct itimerval *o, struct itimerval32 __user *i) | |
972 | { | |
973 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || | |
974 | (__get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec) | | |
975 | __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec) | | |
976 | __get_user(o->it_value.tv_sec, &i->it_value.tv_sec) | | |
977 | __get_user(o->it_value.tv_usec, &i->it_value.tv_usec))); | |
978 | } | |
979 | ||
980 | static inline long | |
981 | put_it32(struct itimerval32 __user *o, struct itimerval *i) | |
982 | { | |
983 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || | |
984 | (__put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec) | | |
985 | __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec) | | |
986 | __put_user(i->it_value.tv_sec, &o->it_value.tv_sec) | | |
987 | __put_user(i->it_value.tv_usec, &o->it_value.tv_usec))); | |
988 | } | |
989 | ||
990 | static inline void | |
991 | jiffies_to_timeval32(unsigned long jiffies, struct timeval32 *value) | |
992 | { | |
993 | value->tv_usec = (jiffies % HZ) * (1000000L / HZ); | |
994 | value->tv_sec = jiffies / HZ; | |
995 | } | |
996 | ||
e5d9a90c IK |
997 | SYSCALL_DEFINE2(osf_gettimeofday, struct timeval32 __user *, tv, |
998 | struct timezone __user *, tz) | |
1da177e4 LT |
999 | { |
1000 | if (tv) { | |
1001 | struct timeval ktv; | |
1002 | do_gettimeofday(&ktv); | |
1003 | if (put_tv32(tv, &ktv)) | |
1004 | return -EFAULT; | |
1005 | } | |
1006 | if (tz) { | |
1007 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) | |
1008 | return -EFAULT; | |
1009 | } | |
1010 | return 0; | |
1011 | } | |
1012 | ||
e5d9a90c IK |
1013 | SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv, |
1014 | struct timezone __user *, tz) | |
1da177e4 LT |
1015 | { |
1016 | struct timespec kts; | |
1017 | struct timezone ktz; | |
1018 | ||
1019 | if (tv) { | |
1020 | if (get_tv32((struct timeval *)&kts, tv)) | |
1021 | return -EFAULT; | |
cceaeddc | 1022 | kts.tv_nsec *= 1000; |
1da177e4 LT |
1023 | } |
1024 | if (tz) { | |
1025 | if (copy_from_user(&ktz, tz, sizeof(*tz))) | |
1026 | return -EFAULT; | |
1027 | } | |
1028 | ||
1da177e4 LT |
1029 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); |
1030 | } | |
1031 | ||
baa73d9e NP |
1032 | asmlinkage long sys_ni_posix_timers(void); |
1033 | ||
e5d9a90c | 1034 | SYSCALL_DEFINE2(osf_getitimer, int, which, struct itimerval32 __user *, it) |
1da177e4 LT |
1035 | { |
1036 | struct itimerval kit; | |
1037 | int error; | |
1038 | ||
baa73d9e NP |
1039 | if (!IS_ENABLED(CONFIG_POSIX_TIMERS)) |
1040 | return sys_ni_posix_timers(); | |
1041 | ||
1da177e4 LT |
1042 | error = do_getitimer(which, &kit); |
1043 | if (!error && put_it32(it, &kit)) | |
1044 | error = -EFAULT; | |
1045 | ||
1046 | return error; | |
1047 | } | |
1048 | ||
e5d9a90c IK |
1049 | SYSCALL_DEFINE3(osf_setitimer, int, which, struct itimerval32 __user *, in, |
1050 | struct itimerval32 __user *, out) | |
1da177e4 LT |
1051 | { |
1052 | struct itimerval kin, kout; | |
1053 | int error; | |
1054 | ||
baa73d9e NP |
1055 | if (!IS_ENABLED(CONFIG_POSIX_TIMERS)) |
1056 | return sys_ni_posix_timers(); | |
1057 | ||
1da177e4 LT |
1058 | if (in) { |
1059 | if (get_it32(&kin, in)) | |
1060 | return -EFAULT; | |
1061 | } else | |
1062 | memset(&kin, 0, sizeof(kin)); | |
1063 | ||
1064 | error = do_setitimer(which, &kin, out ? &kout : NULL); | |
1065 | if (error || !out) | |
1066 | return error; | |
1067 | ||
1068 | if (put_it32(out, &kout)) | |
1069 | return -EFAULT; | |
1070 | ||
1071 | return 0; | |
1072 | ||
1073 | } | |
1074 | ||
c7887325 | 1075 | SYSCALL_DEFINE2(osf_utimes, const char __user *, filename, |
e5d9a90c | 1076 | struct timeval32 __user *, tvs) |
1da177e4 | 1077 | { |
1c710c89 | 1078 | struct timespec tv[2]; |
1da177e4 LT |
1079 | |
1080 | if (tvs) { | |
1c710c89 | 1081 | struct timeval ktvs[2]; |
1da177e4 LT |
1082 | if (get_tv32(&ktvs[0], &tvs[0]) || |
1083 | get_tv32(&ktvs[1], &tvs[1])) | |
1084 | return -EFAULT; | |
1c710c89 UD |
1085 | |
1086 | if (ktvs[0].tv_usec < 0 || ktvs[0].tv_usec >= 1000000 || | |
1087 | ktvs[1].tv_usec < 0 || ktvs[1].tv_usec >= 1000000) | |
1088 | return -EINVAL; | |
1089 | ||
1090 | tv[0].tv_sec = ktvs[0].tv_sec; | |
1091 | tv[0].tv_nsec = 1000 * ktvs[0].tv_usec; | |
1092 | tv[1].tv_sec = ktvs[1].tv_sec; | |
1093 | tv[1].tv_nsec = 1000 * ktvs[1].tv_usec; | |
1da177e4 LT |
1094 | } |
1095 | ||
1c710c89 | 1096 | return do_utimes(AT_FDCWD, filename, tvs ? tv : NULL, 0); |
1da177e4 LT |
1097 | } |
1098 | ||
e5d9a90c IK |
1099 | SYSCALL_DEFINE5(osf_select, int, n, fd_set __user *, inp, fd_set __user *, outp, |
1100 | fd_set __user *, exp, struct timeval32 __user *, tvp) | |
1da177e4 | 1101 | { |
14e2acd8 | 1102 | struct timespec end_time, *to = NULL; |
1da177e4 LT |
1103 | if (tvp) { |
1104 | time_t sec, usec; | |
1105 | ||
14e2acd8 AV |
1106 | to = &end_time; |
1107 | ||
1da177e4 LT |
1108 | if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp)) |
1109 | || __get_user(sec, &tvp->tv_sec) | |
1110 | || __get_user(usec, &tvp->tv_usec)) { | |
a2dcb44c | 1111 | return -EFAULT; |
1da177e4 LT |
1112 | } |
1113 | ||
1114 | if (sec < 0 || usec < 0) | |
a2dcb44c | 1115 | return -EINVAL; |
1da177e4 | 1116 | |
14e2acd8 AV |
1117 | if (poll_select_set_timeout(to, sec, usec * NSEC_PER_USEC)) |
1118 | return -EINVAL; | |
1119 | ||
1da177e4 LT |
1120 | } |
1121 | ||
1da177e4 | 1122 | /* OSF does not copy back the remaining time. */ |
14e2acd8 | 1123 | return core_sys_select(n, inp, outp, exp, to); |
1da177e4 LT |
1124 | } |
1125 | ||
1126 | struct rusage32 { | |
1127 | struct timeval32 ru_utime; /* user time used */ | |
1128 | struct timeval32 ru_stime; /* system time used */ | |
1129 | long ru_maxrss; /* maximum resident set size */ | |
1130 | long ru_ixrss; /* integral shared memory size */ | |
1131 | long ru_idrss; /* integral unshared data size */ | |
1132 | long ru_isrss; /* integral unshared stack size */ | |
1133 | long ru_minflt; /* page reclaims */ | |
1134 | long ru_majflt; /* page faults */ | |
1135 | long ru_nswap; /* swaps */ | |
1136 | long ru_inblock; /* block input operations */ | |
1137 | long ru_oublock; /* block output operations */ | |
1138 | long ru_msgsnd; /* messages sent */ | |
1139 | long ru_msgrcv; /* messages received */ | |
1140 | long ru_nsignals; /* signals received */ | |
1141 | long ru_nvcsw; /* voluntary context switches */ | |
1142 | long ru_nivcsw; /* involuntary " */ | |
1143 | }; | |
1144 | ||
e5d9a90c | 1145 | SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru) |
1da177e4 LT |
1146 | { |
1147 | struct rusage32 r; | |
6fac4829 | 1148 | cputime_t utime, stime; |
2019e8a3 | 1149 | unsigned long utime_jiffies, stime_jiffies; |
1da177e4 LT |
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: | |
6fac4829 | 1157 | task_cputime(current, &utime, &stime); |
2019e8a3 FW |
1158 | utime_jiffies = cputime_to_jiffies(utime); |
1159 | stime_jiffies = cputime_to_jiffies(stime); | |
1160 | jiffies_to_timeval32(utime_jiffies, &r.ru_utime); | |
1161 | jiffies_to_timeval32(stime_jiffies, &r.ru_stime); | |
1da177e4 LT |
1162 | r.ru_minflt = current->min_flt; |
1163 | r.ru_majflt = current->maj_flt; | |
1164 | break; | |
1165 | case RUSAGE_CHILDREN: | |
2019e8a3 FW |
1166 | utime_jiffies = cputime_to_jiffies(current->signal->cutime); |
1167 | stime_jiffies = cputime_to_jiffies(current->signal->cstime); | |
1168 | jiffies_to_timeval32(utime_jiffies, &r.ru_utime); | |
1169 | jiffies_to_timeval32(stime_jiffies, &r.ru_stime); | |
1da177e4 LT |
1170 | r.ru_minflt = current->signal->cmin_flt; |
1171 | r.ru_majflt = current->signal->cmaj_flt; | |
1172 | break; | |
1173 | } | |
1174 | ||
1175 | return copy_to_user(ru, &r, sizeof(r)) ? -EFAULT : 0; | |
1176 | } | |
1177 | ||
e5d9a90c IK |
1178 | SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options, |
1179 | struct rusage32 __user *, ur) | |
1da177e4 LT |
1180 | { |
1181 | struct rusage r; | |
1182 | long ret, err; | |
21c5977a | 1183 | unsigned int status = 0; |
1da177e4 LT |
1184 | mm_segment_t old_fs; |
1185 | ||
1186 | if (!ur) | |
1187 | return sys_wait4(pid, ustatus, options, NULL); | |
1188 | ||
1189 | old_fs = get_fs(); | |
1190 | ||
1191 | set_fs (KERNEL_DS); | |
21c5977a DR |
1192 | ret = sys_wait4(pid, (unsigned int __user *) &status, options, |
1193 | (struct rusage __user *) &r); | |
1da177e4 LT |
1194 | set_fs (old_fs); |
1195 | ||
1196 | if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur))) | |
1197 | return -EFAULT; | |
1198 | ||
1199 | err = 0; | |
21c5977a | 1200 | err |= put_user(status, ustatus); |
1da177e4 LT |
1201 | err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec); |
1202 | err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec); | |
1203 | err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec); | |
1204 | err |= __put_user(r.ru_stime.tv_usec, &ur->ru_stime.tv_usec); | |
1205 | err |= __put_user(r.ru_maxrss, &ur->ru_maxrss); | |
1206 | err |= __put_user(r.ru_ixrss, &ur->ru_ixrss); | |
1207 | err |= __put_user(r.ru_idrss, &ur->ru_idrss); | |
1208 | err |= __put_user(r.ru_isrss, &ur->ru_isrss); | |
1209 | err |= __put_user(r.ru_minflt, &ur->ru_minflt); | |
1210 | err |= __put_user(r.ru_majflt, &ur->ru_majflt); | |
1211 | err |= __put_user(r.ru_nswap, &ur->ru_nswap); | |
1212 | err |= __put_user(r.ru_inblock, &ur->ru_inblock); | |
1213 | err |= __put_user(r.ru_oublock, &ur->ru_oublock); | |
1214 | err |= __put_user(r.ru_msgsnd, &ur->ru_msgsnd); | |
1215 | err |= __put_user(r.ru_msgrcv, &ur->ru_msgrcv); | |
1216 | err |= __put_user(r.ru_nsignals, &ur->ru_nsignals); | |
1217 | err |= __put_user(r.ru_nvcsw, &ur->ru_nvcsw); | |
1218 | err |= __put_user(r.ru_nivcsw, &ur->ru_nivcsw); | |
1219 | ||
1220 | return err ? err : ret; | |
1221 | } | |
1222 | ||
1223 | /* | |
1224 | * I don't know what the parameters are: the first one | |
1225 | * seems to be a timeval pointer, and I suspect the second | |
1226 | * one is the time remaining.. Ho humm.. No documentation. | |
1227 | */ | |
e5d9a90c IK |
1228 | SYSCALL_DEFINE2(osf_usleep_thread, struct timeval32 __user *, sleep, |
1229 | struct timeval32 __user *, remain) | |
1da177e4 LT |
1230 | { |
1231 | struct timeval tmp; | |
1232 | unsigned long ticks; | |
1233 | ||
1234 | if (get_tv32(&tmp, sleep)) | |
1235 | goto fault; | |
1236 | ||
24d568ed | 1237 | ticks = timeval_to_jiffies(&tmp); |
1da177e4 | 1238 | |
20c6abd1 | 1239 | ticks = schedule_timeout_interruptible(ticks); |
1da177e4 LT |
1240 | |
1241 | if (remain) { | |
24d568ed | 1242 | jiffies_to_timeval(ticks, &tmp); |
1da177e4 LT |
1243 | if (put_tv32(remain, &tmp)) |
1244 | goto fault; | |
1245 | } | |
1246 | ||
1247 | return 0; | |
1248 | fault: | |
1249 | return -EFAULT; | |
1250 | } | |
1251 | ||
1252 | ||
1253 | struct timex32 { | |
1254 | unsigned int modes; /* mode selector */ | |
1255 | long offset; /* time offset (usec) */ | |
1256 | long freq; /* frequency offset (scaled ppm) */ | |
1257 | long maxerror; /* maximum error (usec) */ | |
1258 | long esterror; /* estimated error (usec) */ | |
1259 | int status; /* clock command/status */ | |
1260 | long constant; /* pll time constant */ | |
1261 | long precision; /* clock precision (usec) (read only) */ | |
1262 | long tolerance; /* clock frequency tolerance (ppm) | |
1263 | * (read only) | |
1264 | */ | |
1265 | struct timeval32 time; /* (read only) */ | |
1266 | long tick; /* (modified) usecs between clock ticks */ | |
1267 | ||
1268 | long ppsfreq; /* pps frequency (scaled ppm) (ro) */ | |
1269 | long jitter; /* pps jitter (us) (ro) */ | |
1270 | int shift; /* interval duration (s) (shift) (ro) */ | |
1271 | long stabil; /* pps stability (scaled ppm) (ro) */ | |
1272 | long jitcnt; /* jitter limit exceeded (ro) */ | |
1273 | long calcnt; /* calibration intervals (ro) */ | |
1274 | long errcnt; /* calibration errors (ro) */ | |
1275 | long stbcnt; /* stability limit exceeded (ro) */ | |
1276 | ||
1277 | int :32; int :32; int :32; int :32; | |
1278 | int :32; int :32; int :32; int :32; | |
1279 | int :32; int :32; int :32; int :32; | |
1280 | }; | |
1281 | ||
e5d9a90c | 1282 | SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p) |
1da177e4 LT |
1283 | { |
1284 | struct timex txc; | |
1285 | int ret; | |
1286 | ||
1287 | /* copy relevant bits of struct timex. */ | |
1288 | if (copy_from_user(&txc, txc_p, offsetof(struct timex32, time)) || | |
1289 | copy_from_user(&txc.tick, &txc_p->tick, sizeof(struct timex32) - | |
1290 | offsetof(struct timex32, time))) | |
1291 | return -EFAULT; | |
1292 | ||
1293 | ret = do_adjtimex(&txc); | |
1294 | if (ret < 0) | |
1295 | return ret; | |
1296 | ||
1297 | /* copy back to timex32 */ | |
1298 | if (copy_to_user(txc_p, &txc, offsetof(struct timex32, time)) || | |
1299 | (copy_to_user(&txc_p->tick, &txc.tick, sizeof(struct timex32) - | |
1300 | offsetof(struct timex32, tick))) || | |
1301 | (put_tv32(&txc_p->time, &txc.time))) | |
1302 | return -EFAULT; | |
1303 | ||
1304 | return ret; | |
1305 | } | |
1306 | ||
1307 | /* Get an address range which is currently unmapped. Similar to the | |
1308 | generic version except that we know how to honor ADDR_LIMIT_32BIT. */ | |
1309 | ||
1310 | static unsigned long | |
1311 | arch_get_unmapped_area_1(unsigned long addr, unsigned long len, | |
1312 | unsigned long limit) | |
1313 | { | |
6d1c7cca ML |
1314 | struct vm_unmapped_area_info info; |
1315 | ||
1316 | info.flags = 0; | |
1317 | info.length = len; | |
1318 | info.low_limit = addr; | |
1319 | info.high_limit = limit; | |
1320 | info.align_mask = 0; | |
1321 | info.align_offset = 0; | |
1322 | return vm_unmapped_area(&info); | |
1da177e4 LT |
1323 | } |
1324 | ||
1325 | unsigned long | |
1326 | arch_get_unmapped_area(struct file *filp, unsigned long addr, | |
1327 | unsigned long len, unsigned long pgoff, | |
1328 | unsigned long flags) | |
1329 | { | |
1330 | unsigned long limit; | |
1331 | ||
1332 | /* "32 bit" actually means 31 bit, since pointers sign extend. */ | |
1333 | if (current->personality & ADDR_LIMIT_32BIT) | |
1334 | limit = 0x80000000; | |
1335 | else | |
1336 | limit = TASK_SIZE; | |
1337 | ||
1338 | if (len > limit) | |
1339 | return -ENOMEM; | |
1340 | ||
4b87b3b2 BH |
1341 | if (flags & MAP_FIXED) |
1342 | return addr; | |
1343 | ||
1da177e4 LT |
1344 | /* First, see if the given suggestion fits. |
1345 | ||
1346 | The OSF/1 loader (/sbin/loader) relies on us returning an | |
1347 | address larger than the requested if one exists, which is | |
1348 | a terribly broken way to program. | |
1349 | ||
1350 | That said, I can see the use in being able to suggest not | |
1351 | merely specific addresses, but regions of memory -- perhaps | |
1352 | this feature should be incorporated into all ports? */ | |
1353 | ||
1354 | if (addr) { | |
1355 | addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit); | |
1356 | if (addr != (unsigned long) -ENOMEM) | |
1357 | return addr; | |
1358 | } | |
1359 | ||
1360 | /* Next, try allocating at TASK_UNMAPPED_BASE. */ | |
1361 | addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE), | |
1362 | len, limit); | |
1363 | if (addr != (unsigned long) -ENOMEM) | |
1364 | return addr; | |
1365 | ||
1366 | /* Finally, try allocating in low memory. */ | |
1367 | addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit); | |
1368 | ||
1369 | return addr; | |
1370 | } | |
1371 | ||
1372 | #ifdef CONFIG_OSF4_COMPAT | |
1373 | ||
1374 | /* Clear top 32 bits of iov_len in the user's buffer for | |
1375 | compatibility with old versions of OSF/1 where iov_len | |
1376 | was defined as int. */ | |
1377 | static int | |
1378 | osf_fix_iov_len(const struct iovec __user *iov, unsigned long count) | |
1379 | { | |
1380 | unsigned long i; | |
1381 | ||
1382 | for (i = 0 ; i < count ; i++) { | |
1383 | int __user *iov_len_high = (int __user *)&iov[i].iov_len + 1; | |
1384 | ||
1385 | if (put_user(0, iov_len_high)) | |
1386 | return -EFAULT; | |
1387 | } | |
1388 | return 0; | |
1389 | } | |
1390 | ||
e5d9a90c IK |
1391 | SYSCALL_DEFINE3(osf_readv, unsigned long, fd, |
1392 | const struct iovec __user *, vector, unsigned long, count) | |
1da177e4 LT |
1393 | { |
1394 | if (unlikely(personality(current->personality) == PER_OSF4)) | |
1395 | if (osf_fix_iov_len(vector, count)) | |
1396 | return -EFAULT; | |
1397 | return sys_readv(fd, vector, count); | |
1398 | } | |
1399 | ||
e5d9a90c IK |
1400 | SYSCALL_DEFINE3(osf_writev, unsigned long, fd, |
1401 | const struct iovec __user *, vector, unsigned long, count) | |
1da177e4 LT |
1402 | { |
1403 | if (unlikely(personality(current->personality) == PER_OSF4)) | |
1404 | if (osf_fix_iov_len(vector, count)) | |
1405 | return -EFAULT; | |
1406 | return sys_writev(fd, vector, count); | |
1407 | } | |
1408 | ||
1409 | #endif | |
be53db6e AV |
1410 | |
1411 | SYSCALL_DEFINE2(osf_getpriority, int, which, int, who) | |
1412 | { | |
1413 | int prio = sys_getpriority(which, who); | |
1414 | if (prio >= 0) { | |
1415 | /* Return value is the unbiased priority, i.e. 20 - prio. | |
1416 | This does result in negative return values, so signal | |
1417 | no error */ | |
1418 | force_successful_syscall_return(); | |
1419 | prio = 20 - prio; | |
1420 | } | |
1421 | return prio; | |
1422 | } | |
1423 | ||
1424 | SYSCALL_DEFINE0(getxuid) | |
1425 | { | |
1426 | current_pt_regs()->r20 = sys_geteuid(); | |
1427 | return sys_getuid(); | |
1428 | } | |
1429 | ||
1430 | SYSCALL_DEFINE0(getxgid) | |
1431 | { | |
1432 | current_pt_regs()->r20 = sys_getegid(); | |
1433 | return sys_getgid(); | |
1434 | } | |
1435 | ||
1436 | SYSCALL_DEFINE0(getxpid) | |
1437 | { | |
1438 | current_pt_regs()->r20 = sys_getppid(); | |
1439 | return sys_getpid(); | |
1440 | } | |
1441 | ||
1442 | SYSCALL_DEFINE0(alpha_pipe) | |
1443 | { | |
1444 | int fd[2]; | |
1445 | int res = do_pipe_flags(fd, 0); | |
1446 | if (!res) { | |
1447 | /* The return values are in $0 and $20. */ | |
1448 | current_pt_regs()->r20 = fd[1]; | |
1449 | res = fd[0]; | |
1450 | } | |
1451 | return res; | |
1452 | } | |
1453 | ||
1454 | SYSCALL_DEFINE1(sethae, unsigned long, val) | |
1455 | { | |
1456 | current_pt_regs()->hae = val; | |
1457 | return 0; | |
1458 | } |