1 | /* $NetBSD: vfs_syscalls_50.c,v 1.18 2014/09/05 09:21:54 matt Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2008 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Christos Zoulas. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * 3. All advertising materials mentioning features or use of this software |
19 | * must display the following acknowledgement: |
20 | * This product includes software developed by the NetBSD |
21 | * Foundation, Inc. and its contributors. |
22 | * 4. Neither the name of The NetBSD Foundation nor the names of its |
23 | * contributors may be used to endorse or promote products derived |
24 | * from this software without specific prior written permission. |
25 | * |
26 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
27 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
28 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
29 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
30 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
31 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
32 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
33 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
34 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
35 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
36 | * POSSIBILITY OF SUCH DAMAGE. |
37 | */ |
38 | #include <sys/cdefs.h> |
39 | __KERNEL_RCSID(0, "$NetBSD: vfs_syscalls_50.c,v 1.18 2014/09/05 09:21:54 matt Exp $" ); |
40 | |
41 | #include <sys/param.h> |
42 | #include <sys/systm.h> |
43 | #include <sys/namei.h> |
44 | #include <sys/filedesc.h> |
45 | #include <sys/kernel.h> |
46 | #include <sys/file.h> |
47 | #include <sys/stat.h> |
48 | #include <sys/socketvar.h> |
49 | #include <sys/vnode.h> |
50 | #include <sys/mount.h> |
51 | #include <sys/proc.h> |
52 | #include <sys/uio.h> |
53 | #include <sys/dirent.h> |
54 | #include <sys/kauth.h> |
55 | #include <sys/time.h> |
56 | #include <sys/vfs_syscalls.h> |
57 | #ifndef LFS |
58 | #define LFS |
59 | #endif |
60 | #include <sys/syscallargs.h> |
61 | |
62 | #include <ufs/lfs/lfs_extern.h> |
63 | |
64 | #include <sys/quota.h> |
65 | #include <sys/quotactl.h> |
66 | #include <ufs/ufs/quota1.h> |
67 | |
68 | #include <compat/common/compat_util.h> |
69 | #include <compat/sys/time.h> |
70 | #include <compat/sys/stat.h> |
71 | #include <compat/sys/dirent.h> |
72 | #include <compat/sys/mount.h> |
73 | |
74 | static void cvtstat(struct stat30 *, const struct stat *); |
75 | |
76 | /* |
77 | * Convert from a new to an old stat structure. |
78 | */ |
79 | static void |
80 | cvtstat(struct stat30 *ost, const struct stat *st) |
81 | { |
82 | |
83 | ost->st_dev = st->st_dev; |
84 | ost->st_ino = st->st_ino; |
85 | ost->st_mode = st->st_mode; |
86 | ost->st_nlink = st->st_nlink; |
87 | ost->st_uid = st->st_uid; |
88 | ost->st_gid = st->st_gid; |
89 | ost->st_rdev = st->st_rdev; |
90 | timespec_to_timespec50(&st->st_atimespec, &ost->st_atimespec); |
91 | timespec_to_timespec50(&st->st_mtimespec, &ost->st_mtimespec); |
92 | timespec_to_timespec50(&st->st_ctimespec, &ost->st_ctimespec); |
93 | timespec_to_timespec50(&st->st_birthtimespec, &ost->st_birthtimespec); |
94 | ost->st_size = st->st_size; |
95 | ost->st_blocks = st->st_blocks; |
96 | ost->st_blksize = st->st_blksize; |
97 | ost->st_flags = st->st_flags; |
98 | ost->st_gen = st->st_gen; |
99 | memset(ost->st_spare, 0, sizeof(ost->st_spare)); |
100 | } |
101 | |
102 | /* |
103 | * Get file status; this version follows links. |
104 | */ |
105 | /* ARGSUSED */ |
106 | int |
107 | compat_50_sys___stat30(struct lwp *l, const struct compat_50_sys___stat30_args *uap, register_t *retval) |
108 | { |
109 | /* { |
110 | syscallarg(const char *) path; |
111 | syscallarg(struct stat30 *) ub; |
112 | } */ |
113 | struct stat sb; |
114 | struct stat30 osb; |
115 | int error; |
116 | |
117 | error = do_sys_stat(SCARG(uap, path), FOLLOW, &sb); |
118 | if (error) |
119 | return error; |
120 | cvtstat(&osb, &sb); |
121 | error = copyout(&osb, SCARG(uap, ub), sizeof (osb)); |
122 | return error; |
123 | } |
124 | |
125 | |
126 | /* |
127 | * Get file status; this version does not follow links. |
128 | */ |
129 | /* ARGSUSED */ |
130 | int |
131 | compat_50_sys___lstat30(struct lwp *l, const struct compat_50_sys___lstat30_args *uap, register_t *retval) |
132 | { |
133 | /* { |
134 | syscallarg(const char *) path; |
135 | syscallarg(struct stat30 *) ub; |
136 | } */ |
137 | struct stat sb; |
138 | struct stat30 osb; |
139 | int error; |
140 | |
141 | error = do_sys_stat(SCARG(uap, path), NOFOLLOW, &sb); |
142 | if (error) |
143 | return error; |
144 | cvtstat(&osb, &sb); |
145 | error = copyout(&osb, SCARG(uap, ub), sizeof (osb)); |
146 | return error; |
147 | } |
148 | |
149 | /* |
150 | * Return status information about a file descriptor. |
151 | */ |
152 | /* ARGSUSED */ |
153 | int |
154 | compat_50_sys___fstat30(struct lwp *l, const struct compat_50_sys___fstat30_args *uap, register_t *retval) |
155 | { |
156 | /* { |
157 | syscallarg(int) fd; |
158 | syscallarg(struct stat30 *) sb; |
159 | } */ |
160 | struct stat sb; |
161 | struct stat30 osb; |
162 | int error; |
163 | |
164 | error = do_sys_fstat(SCARG(uap, fd), &sb); |
165 | if (error) |
166 | return error; |
167 | cvtstat(&osb, &sb); |
168 | error = copyout(&osb, SCARG(uap, sb), sizeof (osb)); |
169 | return error; |
170 | } |
171 | |
172 | /* ARGSUSED */ |
173 | int |
174 | compat_50_sys___fhstat40(struct lwp *l, const struct compat_50_sys___fhstat40_args *uap, register_t *retval) |
175 | { |
176 | /* { |
177 | syscallarg(const void *) fhp; |
178 | syscallarg(size_t) fh_size; |
179 | syscallarg(struct stat30 *) sb; |
180 | } */ |
181 | struct stat sb; |
182 | struct stat30 osb; |
183 | int error; |
184 | |
185 | error = do_fhstat(l, SCARG(uap, fhp), SCARG(uap, fh_size), &sb); |
186 | if (error) |
187 | return error; |
188 | cvtstat(&osb, &sb); |
189 | error = copyout(&osb, SCARG(uap, sb), sizeof (osb)); |
190 | return error; |
191 | } |
192 | |
193 | static int |
194 | compat_50_do_sys_utimes(struct lwp *l, struct vnode *vp, const char *path, |
195 | int flag, const struct timeval50 *tptr) |
196 | { |
197 | struct timeval tv[2], *tvp; |
198 | struct timeval50 tv50[2]; |
199 | if (tptr) { |
200 | int error = copyin(tptr, tv50, sizeof(tv50)); |
201 | if (error) |
202 | return error; |
203 | timeval50_to_timeval(&tv50[0], &tv[0]); |
204 | timeval50_to_timeval(&tv50[1], &tv[1]); |
205 | tvp = tv; |
206 | } else |
207 | tvp = NULL; |
208 | return do_sys_utimes(l, vp, path, flag, tvp, UIO_SYSSPACE); |
209 | } |
210 | |
211 | /* |
212 | * Set the access and modification times given a path name; this |
213 | * version follows links. |
214 | */ |
215 | /* ARGSUSED */ |
216 | int |
217 | compat_50_sys_utimes(struct lwp *l, const struct compat_50_sys_utimes_args *uap, |
218 | register_t *retval) |
219 | { |
220 | /* { |
221 | syscallarg(const char *) path; |
222 | syscallarg(const struct timeval50 *) tptr; |
223 | } */ |
224 | |
225 | return compat_50_do_sys_utimes(l, NULL, SCARG(uap, path), FOLLOW, |
226 | SCARG(uap, tptr)); |
227 | } |
228 | |
229 | /* |
230 | * Set the access and modification times given a file descriptor. |
231 | */ |
232 | /* ARGSUSED */ |
233 | int |
234 | compat_50_sys_futimes(struct lwp *l, |
235 | const struct compat_50_sys_futimes_args *uap, register_t *retval) |
236 | { |
237 | /* { |
238 | syscallarg(int) fd; |
239 | syscallarg(const struct timeval50 *) tptr; |
240 | } */ |
241 | int error; |
242 | struct file *fp; |
243 | |
244 | /* fd_getvnode() will use the descriptor for us */ |
245 | if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) |
246 | return error; |
247 | error = compat_50_do_sys_utimes(l, fp->f_vnode, NULL, 0, |
248 | SCARG(uap, tptr)); |
249 | fd_putfile(SCARG(uap, fd)); |
250 | return error; |
251 | } |
252 | |
253 | /* |
254 | * Set the access and modification times given a path name; this |
255 | * version does not follow links. |
256 | */ |
257 | int |
258 | compat_50_sys_lutimes(struct lwp *l, |
259 | const struct compat_50_sys_lutimes_args *uap, register_t *retval) |
260 | { |
261 | /* { |
262 | syscallarg(const char *) path; |
263 | syscallarg(const struct timeval50 *) tptr; |
264 | } */ |
265 | |
266 | return compat_50_do_sys_utimes(l, NULL, SCARG(uap, path), NOFOLLOW, |
267 | SCARG(uap, tptr)); |
268 | } |
269 | |
270 | int |
271 | compat_50_sys_lfs_segwait(struct lwp *l, |
272 | const struct compat_50_sys_lfs_segwait_args *uap, register_t *retval) |
273 | { |
274 | /* { |
275 | syscallarg(fsid_t *) fsidp; |
276 | syscallarg(struct timeval50 *) tv; |
277 | } */ |
278 | #ifdef notyet |
279 | struct timeval atv; |
280 | struct timeval50 atv50; |
281 | fsid_t fsid; |
282 | int error; |
283 | |
284 | /* XXX need we be su to segwait? */ |
285 | error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_LFS, |
286 | KAUTH_REQ_SYSTEM_LFS_SEGWAIT, NULL, NULL, NULL); |
287 | if (error) |
288 | return (error); |
289 | if ((error = copyin(SCARG(uap, fsidp), &fsid, sizeof(fsid_t))) != 0) |
290 | return (error); |
291 | |
292 | if (SCARG(uap, tv)) { |
293 | error = copyin(SCARG(uap, tv), &atv50, sizeof(atv50)); |
294 | if (error) |
295 | return (error); |
296 | timeval50_to_timeval(&atv50, &atv); |
297 | if (itimerfix(&atv)) |
298 | return (EINVAL); |
299 | } else /* NULL or invalid */ |
300 | atv.tv_sec = atv.tv_usec = 0; |
301 | return lfs_segwait(&fsid, &atv); |
302 | #else |
303 | return ENOSYS; |
304 | #endif |
305 | } |
306 | |
307 | int |
308 | compat_50_sys_mknod(struct lwp *l, |
309 | const struct compat_50_sys_mknod_args *uap, register_t *retval) |
310 | { |
311 | /* { |
312 | syscallarg(const char *) path; |
313 | syscallarg(mode_t) mode; |
314 | syscallarg(uint32_t) dev; |
315 | } */ |
316 | return do_sys_mknod(l, SCARG(uap, path), SCARG(uap, mode), |
317 | SCARG(uap, dev), retval, UIO_USERSPACE); |
318 | } |
319 | |
320 | /* ARGSUSED */ |
321 | int |
322 | compat_50_sys_quotactl(struct lwp *l, const struct compat_50_sys_quotactl_args *uap, register_t *retval) |
323 | { |
324 | /* { |
325 | syscallarg(const char *) path; |
326 | syscallarg(int) cmd; |
327 | syscallarg(int) uid; |
328 | syscallarg(void *) arg; |
329 | } */ |
330 | struct vnode *vp; |
331 | struct mount *mp; |
332 | int q1cmd; |
333 | int idtype; |
334 | char *qfile; |
335 | struct dqblk dqblk; |
336 | struct quotakey key; |
337 | struct quotaval blocks, files; |
338 | struct quotastat qstat; |
339 | int error; |
340 | |
341 | error = namei_simple_user(SCARG(uap, path), |
342 | NSM_FOLLOW_TRYEMULROOT, &vp); |
343 | if (error != 0) |
344 | return (error); |
345 | |
346 | mp = vp->v_mount; |
347 | q1cmd = SCARG(uap, cmd); |
348 | idtype = quota_idtype_from_ufs(q1cmd & SUBCMDMASK); |
349 | |
350 | switch ((q1cmd & ~SUBCMDMASK) >> SUBCMDSHIFT) { |
351 | case Q_QUOTAON: |
352 | qfile = PNBUF_GET(); |
353 | error = copyinstr(SCARG(uap, arg), qfile, PATH_MAX, NULL); |
354 | if (error != 0) { |
355 | PNBUF_PUT(qfile); |
356 | break; |
357 | } |
358 | |
359 | error = vfs_quotactl_quotaon(mp, idtype, qfile); |
360 | |
361 | PNBUF_PUT(qfile); |
362 | break; |
363 | |
364 | case Q_QUOTAOFF: |
365 | error = vfs_quotactl_quotaoff(mp, idtype); |
366 | break; |
367 | |
368 | case Q_GETQUOTA: |
369 | key.qk_idtype = idtype; |
370 | key.qk_id = SCARG(uap, uid); |
371 | |
372 | key.qk_objtype = QUOTA_OBJTYPE_BLOCKS; |
373 | error = vfs_quotactl_get(mp, &key, &blocks); |
374 | if (error) { |
375 | break; |
376 | } |
377 | |
378 | key.qk_objtype = QUOTA_OBJTYPE_FILES; |
379 | error = vfs_quotactl_get(mp, &key, &files); |
380 | if (error) { |
381 | break; |
382 | } |
383 | |
384 | quotavals_to_dqblk(&blocks, &files, &dqblk); |
385 | error = copyout(&dqblk, SCARG(uap, arg), sizeof(dqblk)); |
386 | break; |
387 | |
388 | case Q_SETQUOTA: |
389 | error = copyin(SCARG(uap, arg), &dqblk, sizeof(dqblk)); |
390 | if (error) { |
391 | break; |
392 | } |
393 | dqblk_to_quotavals(&dqblk, &blocks, &files); |
394 | |
395 | key.qk_idtype = idtype; |
396 | key.qk_id = SCARG(uap, uid); |
397 | |
398 | key.qk_objtype = QUOTA_OBJTYPE_BLOCKS; |
399 | error = vfs_quotactl_put(mp, &key, &blocks); |
400 | if (error) { |
401 | break; |
402 | } |
403 | |
404 | key.qk_objtype = QUOTA_OBJTYPE_FILES; |
405 | error = vfs_quotactl_put(mp, &key, &files); |
406 | break; |
407 | |
408 | case Q_SYNC: |
409 | /* |
410 | * not supported but used only to see if quota is supported, |
411 | * emulate with stat |
412 | * |
413 | * XXX should probably be supported |
414 | */ |
415 | (void)idtype; /* not used */ |
416 | |
417 | error = vfs_quotactl_stat(mp, &qstat); |
418 | break; |
419 | |
420 | case Q_SETUSE: |
421 | default: |
422 | error = EOPNOTSUPP; |
423 | break; |
424 | } |
425 | |
426 | vrele(vp); |
427 | return error; |
428 | } |
429 | |