vfs_syscalls_50.c revision 1.18.18.1
1 /* $NetBSD: vfs_syscalls_50.c,v 1.18.18.1 2018/03/19 21:54:43 pgoyette 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 1.18.18.1 2018/03/19 21:54:43 pgoyette 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/syscall.h> 57 #include <sys/syscallvar.h> 58 #include <sys/syscallargs.h> 59 #include <sys/vfs_syscalls.h> 60 #ifndef LFS 61 #define LFS 62 #endif 63 #include <sys/syscallargs.h> 64 65 #include <ufs/lfs/lfs_extern.h> 66 67 #include <sys/quota.h> 68 #include <sys/quotactl.h> 69 #include <ufs/ufs/quota1.h> 70 71 #include <compat/common/compat_util.h> 72 #include <compat/common/compat_mod.h> 73 #include <compat/sys/time.h> 74 #include <compat/sys/stat.h> 75 #include <compat/sys/dirent.h> 76 #include <compat/sys/mount.h> 77 78 static void cvtstat(struct stat30 *, const struct stat *); 79 80 static const struct syscall_package vfs_syscalls_50_syscalls[] = { 81 { SYS_compat_50___stat30, 0, (sy_call_t *)compat_50_sys___stat30 }, 82 { SYS_compat_50___fstat30, 0, (sy_call_t *)compat_50_sys___fstat30 }, 83 { SYS_compat_50___lstat30, 0, (sy_call_t *)compat_50_sys___lstat30 }, 84 { SYS_compat_50___fhstat40, 0, (sy_call_t *)compat_50_sys___fhstat40 }, 85 { SYS_compat_50_utimes, 0, (sy_call_t *)compat_50_sys_utimes }, 86 { SYS_compat_50_lfs_segwait, 0, 87 (sy_call_t *)compat_50_sys_lfs_segwait } , 88 { SYS_compat_50_futimes, 0, (sy_call_t *)compat_50_sys_futimes }, 89 { SYS_compat_50_lutimes, 0, (sy_call_t *)compat_50_sys_lutimes }, 90 { SYS_compat_50_mknod, 0, (sy_call_t *)compat_50_sys_mknod }, 91 { SYS_compat_50_quotactl, 0, (sy_call_t *)compat_50_sys_quotactl }, 92 { 0, 0, NULL } 93 }; 94 95 /* 96 * Convert from a new to an old stat structure. 97 */ 98 static void 99 cvtstat(struct stat30 *ost, const struct stat *st) 100 { 101 102 ost->st_dev = st->st_dev; 103 ost->st_ino = st->st_ino; 104 ost->st_mode = st->st_mode; 105 ost->st_nlink = st->st_nlink; 106 ost->st_uid = st->st_uid; 107 ost->st_gid = st->st_gid; 108 ost->st_rdev = st->st_rdev; 109 timespec_to_timespec50(&st->st_atimespec, &ost->st_atimespec); 110 timespec_to_timespec50(&st->st_mtimespec, &ost->st_mtimespec); 111 timespec_to_timespec50(&st->st_ctimespec, &ost->st_ctimespec); 112 timespec_to_timespec50(&st->st_birthtimespec, &ost->st_birthtimespec); 113 ost->st_size = st->st_size; 114 ost->st_blocks = st->st_blocks; 115 ost->st_blksize = st->st_blksize; 116 ost->st_flags = st->st_flags; 117 ost->st_gen = st->st_gen; 118 memset(ost->st_spare, 0, sizeof(ost->st_spare)); 119 } 120 121 /* 122 * Get file status; this version follows links. 123 */ 124 /* ARGSUSED */ 125 int 126 compat_50_sys___stat30(struct lwp *l, const struct compat_50_sys___stat30_args *uap, register_t *retval) 127 { 128 /* { 129 syscallarg(const char *) path; 130 syscallarg(struct stat30 *) ub; 131 } */ 132 struct stat sb; 133 struct stat30 osb; 134 int error; 135 136 error = do_sys_stat(SCARG(uap, path), FOLLOW, &sb); 137 if (error) 138 return error; 139 cvtstat(&osb, &sb); 140 error = copyout(&osb, SCARG(uap, ub), sizeof (osb)); 141 return error; 142 } 143 144 145 /* 146 * Get file status; this version does not follow links. 147 */ 148 /* ARGSUSED */ 149 int 150 compat_50_sys___lstat30(struct lwp *l, const struct compat_50_sys___lstat30_args *uap, register_t *retval) 151 { 152 /* { 153 syscallarg(const char *) path; 154 syscallarg(struct stat30 *) ub; 155 } */ 156 struct stat sb; 157 struct stat30 osb; 158 int error; 159 160 error = do_sys_stat(SCARG(uap, path), NOFOLLOW, &sb); 161 if (error) 162 return error; 163 cvtstat(&osb, &sb); 164 error = copyout(&osb, SCARG(uap, ub), sizeof (osb)); 165 return error; 166 } 167 168 /* 169 * Return status information about a file descriptor. 170 */ 171 /* ARGSUSED */ 172 int 173 compat_50_sys___fstat30(struct lwp *l, const struct compat_50_sys___fstat30_args *uap, register_t *retval) 174 { 175 /* { 176 syscallarg(int) fd; 177 syscallarg(struct stat30 *) sb; 178 } */ 179 struct stat sb; 180 struct stat30 osb; 181 int error; 182 183 error = do_sys_fstat(SCARG(uap, fd), &sb); 184 if (error) 185 return error; 186 cvtstat(&osb, &sb); 187 error = copyout(&osb, SCARG(uap, sb), sizeof (osb)); 188 return error; 189 } 190 191 /* ARGSUSED */ 192 int 193 compat_50_sys___fhstat40(struct lwp *l, const struct compat_50_sys___fhstat40_args *uap, register_t *retval) 194 { 195 /* { 196 syscallarg(const void *) fhp; 197 syscallarg(size_t) fh_size; 198 syscallarg(struct stat30 *) sb; 199 } */ 200 struct stat sb; 201 struct stat30 osb; 202 int error; 203 204 error = do_fhstat(l, SCARG(uap, fhp), SCARG(uap, fh_size), &sb); 205 if (error) 206 return error; 207 cvtstat(&osb, &sb); 208 error = copyout(&osb, SCARG(uap, sb), sizeof (osb)); 209 return error; 210 } 211 212 static int 213 compat_50_do_sys_utimes(struct lwp *l, struct vnode *vp, const char *path, 214 int flag, const struct timeval50 *tptr) 215 { 216 struct timeval tv[2], *tvp; 217 struct timeval50 tv50[2]; 218 if (tptr) { 219 int error = copyin(tptr, tv50, sizeof(tv50)); 220 if (error) 221 return error; 222 timeval50_to_timeval(&tv50[0], &tv[0]); 223 timeval50_to_timeval(&tv50[1], &tv[1]); 224 tvp = tv; 225 } else 226 tvp = NULL; 227 return do_sys_utimes(l, vp, path, flag, tvp, UIO_SYSSPACE); 228 } 229 230 /* 231 * Set the access and modification times given a path name; this 232 * version follows links. 233 */ 234 /* ARGSUSED */ 235 int 236 compat_50_sys_utimes(struct lwp *l, const struct compat_50_sys_utimes_args *uap, 237 register_t *retval) 238 { 239 /* { 240 syscallarg(const char *) path; 241 syscallarg(const struct timeval50 *) tptr; 242 } */ 243 244 return compat_50_do_sys_utimes(l, NULL, SCARG(uap, path), FOLLOW, 245 SCARG(uap, tptr)); 246 } 247 248 /* 249 * Set the access and modification times given a file descriptor. 250 */ 251 /* ARGSUSED */ 252 int 253 compat_50_sys_futimes(struct lwp *l, 254 const struct compat_50_sys_futimes_args *uap, register_t *retval) 255 { 256 /* { 257 syscallarg(int) fd; 258 syscallarg(const struct timeval50 *) tptr; 259 } */ 260 int error; 261 struct file *fp; 262 263 /* fd_getvnode() will use the descriptor for us */ 264 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 265 return error; 266 error = compat_50_do_sys_utimes(l, fp->f_vnode, NULL, 0, 267 SCARG(uap, tptr)); 268 fd_putfile(SCARG(uap, fd)); 269 return error; 270 } 271 272 /* 273 * Set the access and modification times given a path name; this 274 * version does not follow links. 275 */ 276 int 277 compat_50_sys_lutimes(struct lwp *l, 278 const struct compat_50_sys_lutimes_args *uap, register_t *retval) 279 { 280 /* { 281 syscallarg(const char *) path; 282 syscallarg(const struct timeval50 *) tptr; 283 } */ 284 285 return compat_50_do_sys_utimes(l, NULL, SCARG(uap, path), NOFOLLOW, 286 SCARG(uap, tptr)); 287 } 288 289 int 290 compat_50_sys_lfs_segwait(struct lwp *l, 291 const struct compat_50_sys_lfs_segwait_args *uap, register_t *retval) 292 { 293 /* { 294 syscallarg(fsid_t *) fsidp; 295 syscallarg(struct timeval50 *) tv; 296 } */ 297 #ifdef notyet 298 /* XXX need to check presence of LFS at run-time XXX */ 299 struct timeval atv; 300 struct timeval50 atv50; 301 fsid_t fsid; 302 int error; 303 304 /* XXX need we be su to segwait? */ 305 error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_LFS, 306 KAUTH_REQ_SYSTEM_LFS_SEGWAIT, NULL, NULL, NULL); 307 if (error) 308 return (error); 309 if ((error = copyin(SCARG(uap, fsidp), &fsid, sizeof(fsid_t))) != 0) 310 return (error); 311 312 if (SCARG(uap, tv)) { 313 error = copyin(SCARG(uap, tv), &atv50, sizeof(atv50)); 314 if (error) 315 return (error); 316 timeval50_to_timeval(&atv50, &atv); 317 if (itimerfix(&atv)) 318 return (EINVAL); 319 } else /* NULL or invalid */ 320 atv.tv_sec = atv.tv_usec = 0; 321 return lfs_segwait(&fsid, &atv); 322 #else 323 return ENOSYS; 324 #endif 325 } 326 327 int 328 compat_50_sys_mknod(struct lwp *l, 329 const struct compat_50_sys_mknod_args *uap, register_t *retval) 330 { 331 /* { 332 syscallarg(const char *) path; 333 syscallarg(mode_t) mode; 334 syscallarg(uint32_t) dev; 335 } */ 336 return do_sys_mknod(l, SCARG(uap, path), SCARG(uap, mode), 337 SCARG(uap, dev), retval, UIO_USERSPACE); 338 } 339 340 /* ARGSUSED */ 341 int 342 compat_50_sys_quotactl(struct lwp *l, const struct compat_50_sys_quotactl_args *uap, register_t *retval) 343 { 344 /* { 345 syscallarg(const char *) path; 346 syscallarg(int) cmd; 347 syscallarg(int) uid; 348 syscallarg(void *) arg; 349 } */ 350 struct vnode *vp; 351 struct mount *mp; 352 int q1cmd; 353 int idtype; 354 char *qfile; 355 struct dqblk dqblk; 356 struct quotakey key; 357 struct quotaval blocks, files; 358 struct quotastat qstat; 359 int error; 360 361 error = namei_simple_user(SCARG(uap, path), 362 NSM_FOLLOW_TRYEMULROOT, &vp); 363 if (error != 0) 364 return (error); 365 366 mp = vp->v_mount; 367 q1cmd = SCARG(uap, cmd); 368 idtype = quota_idtype_from_ufs(q1cmd & SUBCMDMASK); 369 370 switch ((q1cmd & ~SUBCMDMASK) >> SUBCMDSHIFT) { 371 case Q_QUOTAON: 372 qfile = PNBUF_GET(); 373 error = copyinstr(SCARG(uap, arg), qfile, PATH_MAX, NULL); 374 if (error != 0) { 375 PNBUF_PUT(qfile); 376 break; 377 } 378 379 error = vfs_quotactl_quotaon(mp, idtype, qfile); 380 381 PNBUF_PUT(qfile); 382 break; 383 384 case Q_QUOTAOFF: 385 error = vfs_quotactl_quotaoff(mp, idtype); 386 break; 387 388 case Q_GETQUOTA: 389 key.qk_idtype = idtype; 390 key.qk_id = SCARG(uap, uid); 391 392 key.qk_objtype = QUOTA_OBJTYPE_BLOCKS; 393 error = vfs_quotactl_get(mp, &key, &blocks); 394 if (error) { 395 break; 396 } 397 398 key.qk_objtype = QUOTA_OBJTYPE_FILES; 399 error = vfs_quotactl_get(mp, &key, &files); 400 if (error) { 401 break; 402 } 403 404 quotavals_to_dqblk(&blocks, &files, &dqblk); 405 error = copyout(&dqblk, SCARG(uap, arg), sizeof(dqblk)); 406 break; 407 408 case Q_SETQUOTA: 409 error = copyin(SCARG(uap, arg), &dqblk, sizeof(dqblk)); 410 if (error) { 411 break; 412 } 413 dqblk_to_quotavals(&dqblk, &blocks, &files); 414 415 key.qk_idtype = idtype; 416 key.qk_id = SCARG(uap, uid); 417 418 key.qk_objtype = QUOTA_OBJTYPE_BLOCKS; 419 error = vfs_quotactl_put(mp, &key, &blocks); 420 if (error) { 421 break; 422 } 423 424 key.qk_objtype = QUOTA_OBJTYPE_FILES; 425 error = vfs_quotactl_put(mp, &key, &files); 426 break; 427 428 case Q_SYNC: 429 /* 430 * not supported but used only to see if quota is supported, 431 * emulate with stat 432 * 433 * XXX should probably be supported 434 */ 435 (void)idtype; /* not used */ 436 437 error = vfs_quotactl_stat(mp, &qstat); 438 break; 439 440 case Q_SETUSE: 441 default: 442 error = EOPNOTSUPP; 443 break; 444 } 445 446 vrele(vp); 447 return error; 448 } 449 450 int 451 vfs_syscalls_50_init(void) 452 { 453 454 return syscall_establish(NULL, vfs_syscalls_50_syscalls); 455 } 456 457 int 458 vfs_syscalls_50_fini(void) 459 { 460 461 return syscall_disestablish(NULL, vfs_syscalls_50_syscalls); 462 } 463
Indexes created Fri Oct 17 23:09:53 GMT 2025