netbsd32_fs.c revision 1.36
1 /* $NetBSD: netbsd32_fs.c,v 1.36 2007/03/04 06:01:26 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: netbsd32_fs.c,v 1.36 2007/03/04 06:01:26 christos Exp $"); 33 34 #if defined(_KERNEL_OPT) 35 #include "opt_ktrace.h" 36 #endif 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/malloc.h> 41 #include <sys/mount.h> 42 #include <sys/socket.h> 43 #include <sys/socketvar.h> 44 #include <sys/stat.h> 45 #include <sys/time.h> 46 #include <sys/ktrace.h> 47 #include <sys/resourcevar.h> 48 #include <sys/vnode.h> 49 #include <sys/file.h> 50 #include <sys/filedesc.h> 51 #include <sys/namei.h> 52 #include <sys/statvfs.h> 53 #include <sys/syscallargs.h> 54 #include <sys/proc.h> 55 #include <sys/dirent.h> 56 #include <sys/kauth.h> 57 58 #include <compat/netbsd32/netbsd32.h> 59 #include <compat/netbsd32/netbsd32_syscallargs.h> 60 #include <compat/netbsd32/netbsd32_conv.h> 61 #include <compat/sys/mount.h> 62 63 64 static int dofilereadv32 __P((struct lwp *, int, struct file *, struct netbsd32_iovec *, 65 int, off_t *, int, register_t *)); 66 static int dofilewritev32 __P((struct lwp *, int, struct file *, struct netbsd32_iovec *, 67 int, off_t *, int, register_t *)); 68 static int change_utimes32 __P((struct vnode *, netbsd32_timevalp_t, struct lwp *)); 69 70 int 71 netbsd32_readv(l, v, retval) 72 struct lwp *l; 73 void *v; 74 register_t *retval; 75 { 76 struct netbsd32_readv_args /* { 77 syscallarg(int) fd; 78 syscallarg(const netbsd32_iovecp_t) iovp; 79 syscallarg(int) iovcnt; 80 } */ *uap = v; 81 int fd = SCARG(uap, fd); 82 struct proc *p = l->l_proc; 83 struct file *fp; 84 struct filedesc *fdp = p->p_fd; 85 86 if ((fp = fd_getfile(fdp, fd)) == NULL) 87 return (EBADF); 88 89 if ((fp->f_flag & FREAD) == 0) 90 return (EBADF); 91 92 FILE_USE(fp); 93 94 return (dofilereadv32(l, fd, fp, 95 (struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)), 96 SCARG(uap, iovcnt), &fp->f_offset, FOF_UPDATE_OFFSET, retval)); 97 } 98 99 /* Damn thing copies in the iovec! */ 100 int 101 dofilereadv32(l, fd, fp, iovp, iovcnt, offset, flags, retval) 102 struct lwp *l; 103 int fd; 104 struct file *fp; 105 struct netbsd32_iovec *iovp; 106 int iovcnt; 107 off_t *offset; 108 int flags; 109 register_t *retval; 110 { 111 struct uio auio; 112 struct iovec *iov; 113 struct iovec *needfree; 114 struct iovec aiov[UIO_SMALLIOV]; 115 long i, cnt, error = 0; 116 u_int iovlen; 117 #ifdef KTRACE 118 struct iovec *ktriov = NULL; 119 #endif 120 121 /* note: can't use iovlen until iovcnt is validated */ 122 iovlen = iovcnt * sizeof(struct iovec); 123 if ((u_int)iovcnt > UIO_SMALLIOV) { 124 if ((u_int)iovcnt > IOV_MAX) { 125 error = EINVAL; 126 goto out; 127 } 128 iov = malloc(iovlen, M_IOV, M_WAITOK); 129 needfree = iov; 130 } else if ((u_int)iovcnt > 0) { 131 iov = aiov; 132 needfree = NULL; 133 } else { 134 error = EINVAL; 135 goto out; 136 } 137 138 auio.uio_iov = iov; 139 auio.uio_iovcnt = iovcnt; 140 auio.uio_rw = UIO_READ; 141 auio.uio_vmspace = l->l_proc->p_vmspace; 142 error = netbsd32_to_iovecin(iovp, iov, iovcnt); 143 if (error) 144 goto done; 145 auio.uio_resid = 0; 146 for (i = 0; i < iovcnt; i++) { 147 auio.uio_resid += iov->iov_len; 148 /* 149 * Reads return ssize_t because -1 is returned on error. 150 * Therefore we must restrict the length to SSIZE_MAX to 151 * avoid garbage return values. 152 */ 153 if (iov->iov_len > SSIZE_MAX || auio.uio_resid > SSIZE_MAX) { 154 error = EINVAL; 155 goto done; 156 } 157 iov++; 158 } 159 #ifdef KTRACE 160 /* 161 * if tracing, save a copy of iovec 162 */ 163 if (KTRPOINT(l->l_proc, KTR_GENIO)) { 164 ktriov = malloc(iovlen, M_TEMP, M_WAITOK); 165 memcpy((void *)ktriov, (void *)auio.uio_iov, iovlen); 166 } 167 #endif 168 cnt = auio.uio_resid; 169 error = (*fp->f_ops->fo_read)(fp, offset, &auio, fp->f_cred, flags); 170 if (error) 171 if (auio.uio_resid != cnt && (error == ERESTART || 172 error == EINTR || error == EWOULDBLOCK)) 173 error = 0; 174 cnt -= auio.uio_resid; 175 #ifdef KTRACE 176 if (KTRPOINT(l->l_proc, KTR_GENIO)) 177 if (error == 0) { 178 ktrgenio(l, fd, UIO_READ, ktriov, cnt, 179 error); 180 free(ktriov, M_TEMP); 181 } 182 #endif 183 *retval = cnt; 184 done: 185 if (needfree) 186 free(needfree, M_IOV); 187 out: 188 FILE_UNUSE(fp, l); 189 return (error); 190 } 191 192 int 193 netbsd32_writev(l, v, retval) 194 struct lwp *l; 195 void *v; 196 register_t *retval; 197 { 198 struct netbsd32_writev_args /* { 199 syscallarg(int) fd; 200 syscallarg(const netbsd32_iovecp_t) iovp; 201 syscallarg(int) iovcnt; 202 } */ *uap = v; 203 int fd = SCARG(uap, fd); 204 struct file *fp; 205 struct proc *p = l->l_proc; 206 struct filedesc *fdp = p->p_fd; 207 208 if ((fp = fd_getfile(fdp, fd)) == NULL) 209 return (EBADF); 210 211 if ((fp->f_flag & FWRITE) == 0) 212 return (EBADF); 213 214 FILE_USE(fp); 215 216 return (dofilewritev32(l, fd, fp, 217 (struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)), 218 SCARG(uap, iovcnt), &fp->f_offset, FOF_UPDATE_OFFSET, retval)); 219 } 220 221 int 222 dofilewritev32(l, fd, fp, iovp, iovcnt, offset, flags, retval) 223 struct lwp *l; 224 int fd; 225 struct file *fp; 226 struct netbsd32_iovec *iovp; 227 int iovcnt; 228 off_t *offset; 229 int flags; 230 register_t *retval; 231 { 232 struct uio auio; 233 struct iovec *iov; 234 struct iovec *needfree; 235 struct iovec aiov[UIO_SMALLIOV]; 236 struct proc *p = l->l_proc; 237 long i, cnt, error = 0; 238 u_int iovlen; 239 #ifdef KTRACE 240 struct iovec *ktriov = NULL; 241 #endif 242 243 /* note: can't use iovlen until iovcnt is validated */ 244 iovlen = iovcnt * sizeof(struct iovec); 245 if ((u_int)iovcnt > UIO_SMALLIOV) { 246 if ((u_int)iovcnt > IOV_MAX) { 247 error = EINVAL; 248 goto out; 249 } 250 iov = malloc(iovlen, M_IOV, M_WAITOK); 251 needfree = iov; 252 } else if ((u_int)iovcnt > 0) { 253 iov = aiov; 254 needfree = NULL; 255 } else { 256 error = EINVAL; 257 goto out; 258 } 259 260 auio.uio_iov = iov; 261 auio.uio_iovcnt = iovcnt; 262 auio.uio_rw = UIO_WRITE; 263 auio.uio_vmspace = l->l_proc->p_vmspace; 264 error = netbsd32_to_iovecin(iovp, iov, iovcnt); 265 if (error) 266 goto done; 267 auio.uio_resid = 0; 268 for (i = 0; i < iovcnt; i++) { 269 auio.uio_resid += iov->iov_len; 270 /* 271 * Writes return ssize_t because -1 is returned on error. 272 * Therefore we must restrict the length to SSIZE_MAX to 273 * avoid garbage return values. 274 */ 275 if (iov->iov_len > SSIZE_MAX || auio.uio_resid > SSIZE_MAX) { 276 error = EINVAL; 277 goto done; 278 } 279 iov++; 280 } 281 #ifdef KTRACE 282 /* 283 * if tracing, save a copy of iovec 284 */ 285 if (KTRPOINT(p, KTR_GENIO)) { 286 ktriov = malloc(iovlen, M_TEMP, M_WAITOK); 287 memcpy((void *)ktriov, (void *)auio.uio_iov, iovlen); 288 } 289 #endif 290 cnt = auio.uio_resid; 291 error = (*fp->f_ops->fo_write)(fp, offset, &auio, fp->f_cred, flags); 292 if (error) { 293 if (auio.uio_resid != cnt && (error == ERESTART || 294 error == EINTR || error == EWOULDBLOCK)) 295 error = 0; 296 if (error == EPIPE) 297 psignal(p, SIGPIPE); 298 } 299 cnt -= auio.uio_resid; 300 #ifdef KTRACE 301 if (KTRPOINT(p, KTR_GENIO)) 302 if (error == 0) { 303 ktrgenio(l, fd, UIO_WRITE, ktriov, cnt, 304 error); 305 free(ktriov, M_TEMP); 306 } 307 #endif 308 *retval = cnt; 309 done: 310 if (needfree) 311 free(needfree, M_IOV); 312 out: 313 FILE_UNUSE(fp, l); 314 return (error); 315 } 316 317 int 318 netbsd32_utimes(l, v, retval) 319 struct lwp *l; 320 void *v; 321 register_t *retval; 322 { 323 struct netbsd32_utimes_args /* { 324 syscallarg(const netbsd32_charp) path; 325 syscallarg(const netbsd32_timevalp_t) tptr; 326 } */ *uap = v; 327 int error; 328 struct nameidata nd; 329 330 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, 331 (char *)NETBSD32PTR64(SCARG(uap, path)), l); 332 if ((error = namei(&nd)) != 0) 333 return (error); 334 335 error = change_utimes32(nd.ni_vp, SCARG(uap, tptr), l); 336 337 vrele(nd.ni_vp); 338 return (error); 339 } 340 341 /* 342 * Common routine to set access and modification times given a vnode. 343 */ 344 static int 345 change_utimes32(vp, tptr, l) 346 struct vnode *vp; 347 netbsd32_timevalp_t tptr; 348 struct lwp *l; 349 { 350 struct netbsd32_timeval tv32[2]; 351 struct timeval tv[2]; 352 struct vattr vattr; 353 int error; 354 355 VATTR_NULL(&vattr); 356 if (tptr == 0) { 357 microtime(&tv[0]); 358 tv[1] = tv[0]; 359 vattr.va_vaflags |= VA_UTIMES_NULL; 360 } else { 361 error = copyin((void *)NETBSD32PTR64(tptr), tv32, 362 sizeof(tv32)); 363 if (error) 364 return (error); 365 netbsd32_to_timeval(&tv32[0], &tv[0]); 366 netbsd32_to_timeval(&tv32[1], &tv[1]); 367 } 368 VOP_LEASE(vp, l, l->l_cred, LEASE_WRITE); 369 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 370 vattr.va_atime.tv_sec = tv[0].tv_sec; 371 vattr.va_atime.tv_nsec = tv[0].tv_usec * 1000; 372 vattr.va_mtime.tv_sec = tv[1].tv_sec; 373 vattr.va_mtime.tv_nsec = tv[1].tv_usec * 1000; 374 error = VOP_SETATTR(vp, &vattr, l->l_cred, l); 375 VOP_UNLOCK(vp, 0); 376 return (error); 377 } 378 379 int 380 netbsd32_statvfs1(l, v, retval) 381 struct lwp *l; 382 void *v; 383 register_t *retval; 384 { 385 struct netbsd32_statvfs1_args /* { 386 syscallarg(const netbsd32_charp) path; 387 syscallarg(netbsd32_statvfsp_t) buf; 388 syscallarg(int) flags; 389 } */ *uap = v; 390 struct mount *mp; 391 struct statvfs *sbuf; 392 struct netbsd32_statvfs *s32; 393 struct nameidata nd; 394 int error; 395 396 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, 397 (char *)NETBSD32PTR64(SCARG(uap, path)), l); 398 if ((error = namei(&nd)) != 0) 399 return (error); 400 /* Allocating on the stack would blow it up */ 401 sbuf = (struct statvfs *)malloc(sizeof(struct statvfs), M_TEMP, 402 M_WAITOK); 403 mp = nd.ni_vp->v_mount; 404 vrele(nd.ni_vp); 405 if ((error = dostatvfs(mp, sbuf, l, SCARG(uap, flags), 1)) != 0) 406 goto out; 407 s32 = (struct netbsd32_statvfs *) 408 malloc(sizeof(struct netbsd32_statvfs), M_TEMP, M_WAITOK); 409 netbsd32_from_statvfs(sbuf, s32); 410 error = copyout(s32, (void *)NETBSD32PTR64(SCARG(uap, buf)), 411 sizeof(struct netbsd32_statvfs)); 412 free(s32, M_TEMP); 413 out: 414 free(sbuf, M_TEMP); 415 return (error); 416 } 417 418 int 419 netbsd32_fstatvfs1(l, v, retval) 420 struct lwp *l; 421 void *v; 422 register_t *retval; 423 { 424 struct netbsd32_fstatvfs1_args /* { 425 syscallarg(int) fd; 426 syscallarg(netbsd32_statvfsp_t) buf; 427 syscallarg(int) flags; 428 } */ *uap = v; 429 struct proc *p = l->l_proc; 430 struct file *fp; 431 struct mount *mp; 432 struct statvfs *sbuf; 433 struct netbsd32_statvfs *s32; 434 int error; 435 436 /* getvnode() will use the descriptor for us */ 437 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 438 return (error); 439 mp = ((struct vnode *)fp->f_data)->v_mount; 440 sbuf = (struct statvfs *)malloc(sizeof(struct statvfs), M_TEMP, 441 M_WAITOK); 442 if ((error = dostatvfs(mp, sbuf, l, SCARG(uap, flags), 1)) != 0) 443 goto out; 444 s32 = (struct netbsd32_statvfs *) 445 malloc(sizeof(struct netbsd32_statvfs), M_TEMP, M_WAITOK); 446 netbsd32_from_statvfs(sbuf, s32); 447 error = copyout(s32, (void *)NETBSD32PTR64(SCARG(uap, buf)), 448 sizeof(struct netbsd32_statvfs)); 449 free(s32, M_TEMP); 450 out: 451 free(sbuf, M_TEMP); 452 FILE_UNUSE(fp, l); 453 return error; 454 } 455 456 int 457 netbsd32_getvfsstat(l, v, retval) 458 struct lwp *l; 459 void *v; 460 register_t *retval; 461 { 462 struct netbsd32_getvfsstat_args /* { 463 syscallarg(netbsd32_statvfsp_t) buf; 464 syscallarg(netbsd32_size_t) bufsize; 465 syscallarg(int) flags; 466 } */ *uap = v; 467 int root = 0; 468 struct proc *p = l->l_proc; 469 struct mount *mp, *nmp; 470 struct statvfs *sbuf; 471 struct netbsd32_statvfs *sfsp; 472 struct netbsd32_statvfs *s32; 473 size_t count, maxcount; 474 int error = 0; 475 476 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statvfs); 477 sfsp = (struct netbsd32_statvfs *)NETBSD32PTR64(SCARG(uap, buf)); 478 sbuf = (struct statvfs *)malloc(sizeof(struct statvfs), M_TEMP, 479 M_WAITOK); 480 s32 = (struct netbsd32_statvfs *) 481 malloc(sizeof(struct netbsd32_statvfs), M_TEMP, M_WAITOK); 482 simple_lock(&mountlist_slock); 483 count = 0; 484 for (mp = CIRCLEQ_FIRST(&mountlist); mp != (void *)&mountlist; 485 mp = nmp) { 486 if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock)) { 487 nmp = CIRCLEQ_NEXT(mp, mnt_list); 488 continue; 489 } 490 if (sfsp && count < maxcount) { 491 error = dostatvfs(mp, sbuf, l, SCARG(uap, flags), 0); 492 if (error) { 493 simple_lock(&mountlist_slock); 494 nmp = CIRCLEQ_NEXT(mp, mnt_list); 495 vfs_unbusy(mp); 496 continue; 497 } 498 netbsd32_from_statvfs(sbuf, s32); 499 error = copyout(s32, sfsp, sizeof(*sfsp)); 500 if (error) { 501 vfs_unbusy(mp); 502 goto out; 503 } 504 sfsp++; 505 root |= strcmp(sbuf->f_mntonname, "/") == 0; 506 } 507 count++; 508 simple_lock(&mountlist_slock); 509 nmp = CIRCLEQ_NEXT(mp, mnt_list); 510 vfs_unbusy(mp); 511 } 512 simple_unlock(&mountlist_slock); 513 if (root == 0 && p->p_cwdi->cwdi_rdir) { 514 /* 515 * fake a root entry 516 */ 517 if ((error = dostatvfs(p->p_cwdi->cwdi_rdir->v_mount, sbuf, l, 518 SCARG(uap, flags), 1)) != 0) 519 goto out; 520 if (sfsp) { 521 netbsd32_from_statvfs(sbuf, s32); 522 error = copyout(s32, sfsp, sizeof(*sfsp)); 523 } 524 count++; 525 } 526 if (sfsp && count > maxcount) 527 *retval = maxcount; 528 else 529 *retval = count; 530 531 out: 532 free(s32, M_TEMP); 533 free(sbuf, M_TEMP); 534 return (error); 535 } 536 537 int 538 netbsd32___fhstatvfs140(l, v, retval) 539 struct lwp *l; 540 void *v; 541 register_t *retval; 542 { 543 struct netbsd32___fhstatvfs140_args /* { 544 syscallarg(const netbsd32_pointer_t) fhp; 545 syscallarg(netbsd32_size_t) fh_size; 546 syscallarg(netbsd32_statvfsp_t) buf; 547 syscallarg(int) flags; 548 } */ *uap = v; 549 struct statvfs *sbuf; 550 struct netbsd32_statvfs *s32; 551 fhandle_t *fh; 552 struct vnode *vp; 553 int error; 554 555 /* 556 * Must be super user 557 */ 558 if ((error = kauth_authorize_system(l->l_cred, 559 KAUTH_SYSTEM_FILEHANDLE, 0, NULL, NULL, NULL)) != 0) 560 return error; 561 562 if ((error = vfs_copyinfh_alloc(NETBSD32PTR64(SCARG(uap, fhp)), 563 SCARG(uap, fh_size), &fh)) != 0) 564 goto bad; 565 if ((error = vfs_fhtovp(fh, &vp)) != 0) 566 goto bad; 567 568 sbuf = (struct statvfs *)malloc(sizeof(struct statvfs), M_TEMP, 569 M_WAITOK); 570 error = dostatvfs(vp->v_mount, sbuf, l, SCARG(uap, flags), 1); 571 vput(vp); 572 if (error != 0) 573 goto out; 574 575 s32 = (struct netbsd32_statvfs *) 576 malloc(sizeof(struct netbsd32_statvfs), M_TEMP, M_WAITOK); 577 netbsd32_from_statvfs(sbuf, s32); 578 error = copyout(s32, (void *)NETBSD32PTR64(SCARG(uap, buf)), 579 sizeof(struct netbsd32_statvfs)); 580 free(s32, M_TEMP); 581 582 out: 583 free(sbuf, M_TEMP); 584 bad: 585 vfs_copyinfh_free(fh); 586 return (error); 587 } 588 589 int 590 netbsd32_futimes(l, v, retval) 591 struct lwp *l; 592 void *v; 593 register_t *retval; 594 { 595 struct netbsd32_futimes_args /* { 596 syscallarg(int) fd; 597 syscallarg(const netbsd32_timevalp_t) tptr; 598 } */ *uap = v; 599 int error; 600 struct file *fp; 601 struct proc *p = l->l_proc; 602 603 /* getvnode() will use the descriptor for us */ 604 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 605 return (error); 606 607 error = change_utimes32((struct vnode *)fp->f_data, 608 SCARG(uap, tptr), l); 609 FILE_UNUSE(fp, l); 610 return (error); 611 } 612 613 int 614 netbsd32_sys___getdents30(l, v, retval) 615 struct lwp *l; 616 void *v; 617 register_t *retval; 618 { 619 struct netbsd32_sys___getdents30_args /* { 620 syscallarg(int) fd; 621 syscallarg(netbsd32_charp) buf; 622 syscallarg(netbsd32_size_t) count; 623 } */ *uap = v; 624 struct file *fp; 625 int error, done; 626 struct proc *p = l->l_proc; 627 628 /* getvnode() will use the descriptor for us */ 629 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 630 return (error); 631 if ((fp->f_flag & FREAD) == 0) { 632 error = EBADF; 633 goto out; 634 } 635 error = vn_readdir(fp, (void *)NETBSD32PTR64(SCARG(uap, buf)), 636 UIO_USERSPACE, SCARG(uap, count), &done, l, 0, 0); 637 *retval = done; 638 out: 639 FILE_UNUSE(fp, l); 640 return (error); 641 } 642 643 int 644 netbsd32_lutimes(l, v, retval) 645 struct lwp *l; 646 void *v; 647 register_t *retval; 648 { 649 struct netbsd32_lutimes_args /* { 650 syscallarg(const netbsd32_charp) path; 651 syscallarg(const netbsd32_timevalp_t) tptr; 652 } */ *uap = v; 653 int error; 654 struct nameidata nd; 655 656 NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, 657 (void *)NETBSD32PTR64(SCARG(uap, path)), l); 658 if ((error = namei(&nd)) != 0) 659 return (error); 660 661 error = change_utimes32(nd.ni_vp, SCARG(uap, tptr), l); 662 663 vrele(nd.ni_vp); 664 return (error); 665 } 666 667 int 668 netbsd32_sys___stat30(l, v, retval) 669 struct lwp *l; 670 void *v; 671 register_t *retval; 672 { 673 struct netbsd32_sys___stat30_args /* { 674 syscallarg(const netbsd32_charp) path; 675 syscallarg(netbsd32_statp_t) ub; 676 } */ *uap = v; 677 struct netbsd32_stat sb32; 678 struct stat sb; 679 int error; 680 struct nameidata nd; 681 void *sg; 682 const char *path; 683 struct proc *p = l->l_proc; 684 685 path = (char *)NETBSD32PTR64(SCARG(uap, path)); 686 sg = stackgap_init(p, 0); 687 CHECK_ALT_EXIST(l, &sg, path); 688 689 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, path, l); 690 if ((error = namei(&nd)) != 0) 691 return (error); 692 error = vn_stat(nd.ni_vp, &sb, l); 693 vput(nd.ni_vp); 694 if (error) 695 return (error); 696 netbsd32_from___stat30(&sb, &sb32); 697 error = copyout(&sb32, (void *)NETBSD32PTR64(SCARG(uap, ub)), 698 sizeof(sb32)); 699 return (error); 700 } 701 702 int 703 netbsd32_sys___fstat30(l, v, retval) 704 struct lwp *l; 705 void *v; 706 register_t *retval; 707 { 708 struct netbsd32_sys___fstat30_args /* { 709 syscallarg(int) fd; 710 syscallarg(netbsd32_statp_t) sb; 711 } */ *uap = v; 712 int fd = SCARG(uap, fd); 713 struct proc *p = l->l_proc; 714 struct filedesc *fdp = p->p_fd; 715 struct file *fp; 716 struct netbsd32_stat sb32; 717 struct stat ub; 718 int error = 0; 719 720 if ((fp = fd_getfile(fdp, fd)) == NULL) 721 return (EBADF); 722 723 FILE_USE(fp); 724 error = (*fp->f_ops->fo_stat)(fp, &ub, l); 725 FILE_UNUSE(fp, l); 726 727 if (error == 0) { 728 netbsd32_from___stat30(&ub, &sb32); 729 error = copyout(&sb32, (void *)NETBSD32PTR64(SCARG(uap, sb)), 730 sizeof(sb32)); 731 } 732 return (error); 733 } 734 735 int 736 netbsd32_sys___lstat30(l, v, retval) 737 struct lwp *l; 738 void *v; 739 register_t *retval; 740 { 741 struct netbsd32_sys___lstat30_args /* { 742 syscallarg(const netbsd32_charp) path; 743 syscallarg(netbsd32_statp_t) ub; 744 } */ *uap = v; 745 struct netbsd32_stat sb32; 746 struct stat sb; 747 int error; 748 struct nameidata nd; 749 void *sg; 750 const char *path; 751 struct proc *p = l->l_proc; 752 753 path = (char *)NETBSD32PTR64(SCARG(uap, path)); 754 sg = stackgap_init(p, 0); 755 CHECK_ALT_EXIST(l, &sg, path); 756 757 NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, path, l); 758 if ((error = namei(&nd)) != 0) 759 return (error); 760 error = vn_stat(nd.ni_vp, &sb, l); 761 vput(nd.ni_vp); 762 if (error) 763 return (error); 764 netbsd32_from___stat30(&sb, &sb32); 765 error = copyout(&sb32, (void *)NETBSD32PTR64(SCARG(uap, ub)), 766 sizeof(sb32)); 767 return (error); 768 } 769 770 int netbsd32___fhstat40(l, v, retval) 771 struct lwp *l; 772 void *v; 773 register_t *retval; 774 { 775 struct netbsd32___fhstat40_args /* { 776 syscallarg(const netbsd32_pointer_t) fhp; 777 syscallarg(netbsd32_size_t) fh_size; 778 syscallarg(netbsd32_statp_t) sb; 779 } */ *uap = v; 780 struct stat sb; 781 struct netbsd32_stat sb32; 782 int error; 783 fhandle_t *fh; 784 struct vnode *vp; 785 786 /* 787 * Must be super user 788 */ 789 if ((error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FILEHANDLE, 790 0, NULL, NULL, NULL))) 791 return error; 792 793 if ((error = vfs_copyinfh_alloc(NETBSD32PTR64(SCARG(uap, fhp)), 794 SCARG(uap, fh_size), &fh)) != 0) 795 goto bad; 796 797 if ((error = vfs_fhtovp(fh, &vp)) != 0) 798 goto bad; 799 800 error = vn_stat(vp, &sb, l); 801 vput(vp); 802 if (error) 803 goto bad; 804 netbsd32_from___stat30(&sb, &sb32); 805 error = copyout(&sb32, NETBSD32PTR64(SCARG(uap, sb)), sizeof(sb)); 806 bad: 807 vfs_copyinfh_free(fh); 808 return error; 809 } 810 811 int 812 netbsd32_preadv(l, v, retval) 813 struct lwp *l; 814 void *v; 815 register_t *retval; 816 { 817 struct netbsd32_preadv_args /* { 818 syscallarg(int) fd; 819 syscallarg(const netbsd32_iovecp_t) iovp; 820 syscallarg(int) iovcnt; 821 syscallarg(int) pad; 822 syscallarg(off_t) offset; 823 } */ *uap = v; 824 struct proc *p = l->l_proc; 825 struct filedesc *fdp = p->p_fd; 826 struct file *fp; 827 struct vnode *vp; 828 off_t offset; 829 int error, fd = SCARG(uap, fd); 830 831 if ((fp = fd_getfile(fdp, fd)) == NULL) 832 return (EBADF); 833 834 if ((fp->f_flag & FREAD) == 0) 835 return (EBADF); 836 837 FILE_USE(fp); 838 839 vp = (struct vnode *)fp->f_data; 840 if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO) { 841 error = ESPIPE; 842 goto out; 843 } 844 845 offset = SCARG(uap, offset); 846 847 /* 848 * XXX This works because no file systems actually 849 * XXX take any action on the seek operation. 850 */ 851 if ((error = VOP_SEEK(vp, fp->f_offset, offset, fp->f_cred)) != 0) 852 goto out; 853 854 return (dofilereadv32(l, fd, fp, 855 (struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)), 856 SCARG(uap, iovcnt), &offset, 0, retval)); 857 858 out: 859 FILE_UNUSE(fp, l); 860 return (error); 861 } 862 863 int 864 netbsd32_pwritev(l, v, retval) 865 struct lwp *l; 866 void *v; 867 register_t *retval; 868 { 869 struct netbsd32_pwritev_args /* { 870 syscallarg(int) fd; 871 syscallarg(const netbsd32_iovecp_t) iovp; 872 syscallarg(int) iovcnt; 873 syscallarg(int) pad; 874 syscallarg(off_t) offset; 875 } */ *uap = v; 876 struct proc *p = l->l_proc; 877 struct filedesc *fdp = p->p_fd; 878 struct file *fp; 879 struct vnode *vp; 880 off_t offset; 881 int error, fd = SCARG(uap, fd); 882 883 if ((fp = fd_getfile(fdp, fd)) == NULL) 884 return (EBADF); 885 886 if ((fp->f_flag & FWRITE) == 0) 887 return (EBADF); 888 889 FILE_USE(fp); 890 891 vp = (struct vnode *)fp->f_data; 892 if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO) { 893 error = ESPIPE; 894 goto out; 895 } 896 897 offset = SCARG(uap, offset); 898 899 /* 900 * XXX This works because no file systems actually 901 * XXX take any action on the seek operation. 902 */ 903 if ((error = VOP_SEEK(vp, fp->f_offset, offset, fp->f_cred)) != 0) 904 goto out; 905 906 return (dofilewritev32(l, fd, fp, 907 (struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)), 908 SCARG(uap, iovcnt), &offset, 0, retval)); 909 910 out: 911 FILE_UNUSE(fp, l); 912 return (error); 913 } 914 915 /* 916 * Find pathname of process's current directory. 917 * 918 * Use vfs vnode-to-name reverse cache; if that fails, fall back 919 * to reading directory contents. 920 */ 921 /* XXX NH Why does this exist */ 922 int 923 getcwd_common __P((struct vnode *, struct vnode *, 924 char **, char *, int, int, struct lwp *)); 925 926 int netbsd32___getcwd(l, v, retval) 927 struct lwp *l; 928 void *v; 929 register_t *retval; 930 { 931 struct netbsd32___getcwd_args /* { 932 syscallarg(char *) bufp; 933 syscallarg(size_t) length; 934 } */ *uap = v; 935 struct proc *p = l->l_proc; 936 int error; 937 char *path; 938 char *bp, *bend; 939 int len = (int)SCARG(uap, length); 940 int lenused; 941 942 if (len > MAXPATHLEN*4) 943 len = MAXPATHLEN*4; 944 else if (len < 2) 945 return ERANGE; 946 947 path = (char *)malloc(len, M_TEMP, M_WAITOK); 948 if (!path) 949 return ENOMEM; 950 951 bp = &path[len]; 952 bend = bp; 953 *(--bp) = '\0'; 954 955 /* 956 * 5th argument here is "max number of vnodes to traverse". 957 * Since each entry takes up at least 2 bytes in the output buffer, 958 * limit it to N/2 vnodes for an N byte buffer. 959 */ 960 #define GETCWD_CHECK_ACCESS 0x0001 961 error = getcwd_common (p->p_cwdi->cwdi_cdir, NULL, &bp, path, len/2, 962 GETCWD_CHECK_ACCESS, l); 963 964 if (error) 965 goto out; 966 lenused = bend - bp; 967 *retval = lenused; 968 /* put the result into user buffer */ 969 error = copyout(bp, (void *)NETBSD32PTR64(SCARG(uap, bufp)), lenused); 970 971 out: 972 free(path, M_TEMP); 973 return error; 974 } 975
Indexes created Tue Sep 23 02:09:52 GMT 2025