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
74static void cvtstat(struct stat30 *, const struct stat *);
75
76/*
77 * Convert from a new to an old stat structure.
78 */
79static void
80cvtstat(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 */
106int
107compat_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 */
130int
131compat_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 */
153int
154compat_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 */
173int
174compat_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
193static int
194compat_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 */
216int
217compat_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 */
233int
234compat_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 */
257int
258compat_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
270int
271compat_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
307int
308compat_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 */
321int
322compat_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