| 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 | |