netbsd32_fs.c revision 1.14.2.7
1 /* $NetBSD: netbsd32_fs.c,v 1.14.2.7 2005/03/04 16:40:20 skrll 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 1.14.2.7 2005/03/04 16:40:20 skrll 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/sa.h> 53 #include <sys/statvfs.h> 54 #include <sys/syscallargs.h> 55 #include <sys/proc.h> 56 57 #include <compat/netbsd32/netbsd32.h> 58 #include <compat/netbsd32/netbsd32_syscallargs.h> 59 #include <compat/netbsd32/netbsd32_conv.h> 60 61 62 static int dofilereadv32 __P((struct lwp *, int, struct file *, struct netbsd32_iovec *, 63 int, off_t *, int, register_t *)); 64 static int dofilewritev32 __P((struct lwp *, int, struct file *, struct netbsd32_iovec *, 65 int, off_t *, int, register_t *)); 66 static int change_utimes32 __P((struct vnode *, netbsd32_timevalp_t, struct lwp *)); 67 68 int 69 netbsd32_readv(l, v, retval) 70 struct lwp *l; 71 void *v; 72 register_t *retval; 73 { 74 struct netbsd32_readv_args /* { 75 syscallarg(int) fd; 76 syscallarg(const netbsd32_iovecp_t) iovp; 77 syscallarg(int) iovcnt; 78 } */ *uap = v; 79 int fd = SCARG(uap, fd); 80 struct proc *p = l->l_proc; 81 struct file *fp; 82 struct filedesc *fdp = p->p_fd; 83 84 if ((fp = fd_getfile(fdp, fd)) == NULL) 85 return (EBADF); 86 87 if ((fp->f_flag & FREAD) == 0) 88 return (EBADF); 89 90 FILE_USE(fp); 91 92 return (dofilereadv32(l, fd, fp, 93 (struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)), 94 SCARG(uap, iovcnt), &fp->f_offset, FOF_UPDATE_OFFSET, retval)); 95 } 96 97 /* Damn thing copies in the iovec! */ 98 int 99 dofilereadv32(l, fd, fp, iovp, iovcnt, offset, flags, retval) 100 struct lwp *l; 101 int fd; 102 struct file *fp; 103 struct netbsd32_iovec *iovp; 104 int iovcnt; 105 off_t *offset; 106 int flags; 107 register_t *retval; 108 { 109 struct uio auio; 110 struct iovec *iov; 111 struct iovec *needfree; 112 struct iovec aiov[UIO_SMALLIOV]; 113 long i, cnt, error = 0; 114 u_int iovlen; 115 #ifdef KTRACE 116 struct iovec *ktriov = NULL; 117 #endif 118 119 /* note: can't use iovlen until iovcnt is validated */ 120 iovlen = iovcnt * sizeof(struct iovec); 121 if ((u_int)iovcnt > UIO_SMALLIOV) { 122 if ((u_int)iovcnt > IOV_MAX) { 123 error = EINVAL; 124 goto out; 125 } 126 iov = malloc(iovlen, M_IOV, M_WAITOK); 127 needfree = iov; 128 } else if ((u_int)iovcnt > 0) { 129 iov = aiov; 130 needfree = NULL; 131 } else { 132 error = EINVAL; 133 goto out; 134 } 135 136 auio.uio_iov = iov; 137 auio.uio_iovcnt = iovcnt; 138 auio.uio_rw = UIO_READ; 139 auio.uio_segflg = UIO_USERSPACE; 140 auio.uio_lwp = l; 141 error = netbsd32_to_iovecin(iovp, iov, iovcnt); 142 if (error) 143 goto done; 144 auio.uio_resid = 0; 145 for (i = 0; i < iovcnt; i++) { 146 auio.uio_resid += iov->iov_len; 147 /* 148 * Reads return ssize_t because -1 is returned on error. 149 * Therefore we must restrict the length to SSIZE_MAX to 150 * avoid garbage return values. 151 */ 152 if (iov->iov_len > SSIZE_MAX || auio.uio_resid > SSIZE_MAX) { 153 error = EINVAL; 154 goto done; 155 } 156 iov++; 157 } 158 #ifdef KTRACE 159 /* 160 * if tracing, save a copy of iovec 161 */ 162 if (KTRPOINT(l->l_proc, KTR_GENIO)) { 163 ktriov = malloc(iovlen, M_TEMP, M_WAITOK); 164 memcpy((caddr_t)ktriov, (caddr_t)auio.uio_iov, iovlen); 165 } 166 #endif 167 cnt = auio.uio_resid; 168 error = (*fp->f_ops->fo_read)(fp, offset, &auio, fp->f_cred, flags); 169 if (error) 170 if (auio.uio_resid != cnt && (error == ERESTART || 171 error == EINTR || error == EWOULDBLOCK)) 172 error = 0; 173 cnt -= auio.uio_resid; 174 #ifdef KTRACE 175 if (KTRPOINT(l->l_proc, KTR_GENIO)) 176 if (error == 0) { 177 ktrgenio(l, fd, UIO_READ, ktriov, cnt, 178 error); 179 free(ktriov, M_TEMP); 180 } 181 #endif 182 *retval = cnt; 183 done: 184 if (needfree) 185 free(needfree, M_IOV); 186 out: 187 FILE_UNUSE(fp, l); 188 return (error); 189 } 190 191 int 192 netbsd32_writev(l, v, retval) 193 struct lwp *l; 194 void *v; 195 register_t *retval; 196 { 197 struct netbsd32_writev_args /* { 198 syscallarg(int) fd; 199 syscallarg(const netbsd32_iovecp_t) iovp; 200 syscallarg(int) iovcnt; 201 } */ *uap = v; 202 int fd = SCARG(uap, fd); 203 struct file *fp; 204 struct proc *p = l->l_proc; 205 struct filedesc *fdp = p->p_fd; 206 207 if ((fp = fd_getfile(fdp, fd)) == NULL) 208 return (EBADF); 209 210 if ((fp->f_flag & FWRITE) == 0) 211 return (EBADF); 212 213 FILE_USE(fp); 214 215 return (dofilewritev32(l, fd, fp, 216 (struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)), 217 SCARG(uap, iovcnt), &fp->f_offset, FOF_UPDATE_OFFSET, retval)); 218 } 219 220 int 221 dofilewritev32(l, fd, fp, iovp, iovcnt, offset, flags, retval) 222 struct lwp *l; 223 int fd; 224 struct file *fp; 225 struct netbsd32_iovec *iovp; 226 int iovcnt; 227 off_t *offset; 228 int flags; 229 register_t *retval; 230 { 231 struct uio auio; 232 struct iovec *iov; 233 struct iovec *needfree; 234 struct iovec aiov[UIO_SMALLIOV]; 235 struct proc *p = l->l_proc; 236 long i, cnt, error = 0; 237 u_int iovlen; 238 #ifdef KTRACE 239 struct iovec *ktriov = NULL; 240 #endif 241 242 /* note: can't use iovlen until iovcnt is validated */ 243 iovlen = iovcnt * sizeof(struct iovec); 244 if ((u_int)iovcnt > UIO_SMALLIOV) { 245 if ((u_int)iovcnt > IOV_MAX) { 246 error = EINVAL; 247 goto out; 248 } 249 iov = malloc(iovlen, M_IOV, M_WAITOK); 250 needfree = iov; 251 } else if ((u_int)iovcnt > 0) { 252 iov = aiov; 253 needfree = NULL; 254 } else { 255 error = EINVAL; 256 goto out; 257 } 258 259 auio.uio_iov = iov; 260 auio.uio_iovcnt = iovcnt; 261 auio.uio_rw = UIO_WRITE; 262 auio.uio_segflg = UIO_USERSPACE; 263 auio.uio_lwp = l; 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((caddr_t)ktriov, (caddr_t)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 proc *p = l->l_proc; 353 struct vattr vattr; 354 int error; 355 356 VATTR_NULL(&vattr); 357 if (tptr == 0) { 358 microtime(&tv[0]); 359 tv[1] = tv[0]; 360 vattr.va_vaflags |= VA_UTIMES_NULL; 361 } else { 362 error = copyin((caddr_t)NETBSD32PTR64(tptr), tv32, 363 sizeof(tv32)); 364 if (error) 365 return (error); 366 netbsd32_to_timeval(&tv32[0], &tv[0]); 367 netbsd32_to_timeval(&tv32[1], &tv[1]); 368 } 369 VOP_LEASE(vp, l, p->p_ucred, LEASE_WRITE); 370 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 371 vattr.va_atime.tv_sec = tv[0].tv_sec; 372 vattr.va_atime.tv_nsec = tv[0].tv_usec * 1000; 373 vattr.va_mtime.tv_sec = tv[1].tv_sec; 374 vattr.va_mtime.tv_nsec = tv[1].tv_usec * 1000; 375 error = VOP_SETATTR(vp, &vattr, p->p_ucred, l); 376 VOP_UNLOCK(vp, 0); 377 return (error); 378 } 379 380 int 381 netbsd32_statvfs1(l, v, retval) 382 struct lwp *l; 383 void *v; 384 register_t *retval; 385 { 386 struct netbsd32_statvfs1_args /* { 387 syscallarg(const netbsd32_charp) path; 388 syscallarg(netbsd32_statvfsp_t) buf; 389 syscallarg(int) flags; 390 } */ *uap = v; 391 struct mount *mp; 392 struct statvfs *sbuf; 393 struct netbsd32_statvfs *s32; 394 struct nameidata nd; 395 int error; 396 397 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, 398 (char *)NETBSD32PTR64(SCARG(uap, path)), l); 399 if ((error = namei(&nd)) != 0) 400 return (error); 401 /* Allocating on the stack would blow it up */ 402 sbuf = (struct statvfs *)malloc(sizeof(struct statvfs), M_TEMP, 403 M_WAITOK); 404 mp = nd.ni_vp->v_mount; 405 vrele(nd.ni_vp); 406 if ((error = dostatvfs(mp, sbuf, l, SCARG(uap, flags), 1)) != 0) 407 goto out; 408 s32 = (struct netbsd32_statvfs *) 409 malloc(sizeof(struct netbsd32_statvfs), M_TEMP, M_WAITOK); 410 netbsd32_from_statvfs(sbuf, s32); 411 error = copyout(s32, (caddr_t)NETBSD32PTR64(SCARG(uap, buf)), 412 sizeof(struct netbsd32_statvfs)); 413 free(s32, M_TEMP); 414 out: 415 free(sbuf, M_TEMP); 416 return (error); 417 } 418 419 int 420 netbsd32_fstatvfs1(l, v, retval) 421 struct lwp *l; 422 void *v; 423 register_t *retval; 424 { 425 struct netbsd32_fstatvfs1_args /* { 426 syscallarg(int) fd; 427 syscallarg(netbsd32_statvfsp_t) buf; 428 syscallarg(int) flags; 429 } */ *uap = v; 430 struct proc *p = l->l_proc; 431 struct file *fp; 432 struct mount *mp; 433 struct statvfs *sbuf; 434 struct netbsd32_statvfs *s32; 435 int error; 436 437 /* getvnode() will use the descriptor for us */ 438 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 439 return (error); 440 mp = ((struct vnode *)fp->f_data)->v_mount; 441 sbuf = (struct statvfs *)malloc(sizeof(struct statvfs), M_TEMP, 442 M_WAITOK); 443 if ((error = dostatvfs(mp, sbuf, l, SCARG(uap, flags), 1)) != 0) 444 goto out; 445 s32 = (struct netbsd32_statvfs *) 446 malloc(sizeof(struct netbsd32_statvfs), M_TEMP, M_WAITOK); 447 netbsd32_from_statvfs(sbuf, s32); 448 error = copyout(s32, (caddr_t)NETBSD32PTR64(SCARG(uap, buf)), 449 sizeof(struct netbsd32_statvfs)); 450 free(s32, M_TEMP); 451 out: 452 free(sbuf, M_TEMP); 453 FILE_UNUSE(fp, l); 454 return error; 455 } 456 457 int 458 netbsd32_getvfsstat(l, v, retval) 459 struct lwp *l; 460 void *v; 461 register_t *retval; 462 { 463 struct netbsd32_getvfsstat_args /* { 464 syscallarg(netbsd32_statvfsp_t) buf; 465 syscallarg(netbsd32_size_t) bufsize; 466 syscallarg(int) flags; 467 } */ *uap = v; 468 int root = 0; 469 struct proc *p = l->l_proc; 470 struct mount *mp, *nmp; 471 struct statvfs *sbuf; 472 struct netbsd32_statvfs *sfsp; 473 struct netbsd32_statvfs *s32; 474 size_t count, maxcount; 475 int error = 0; 476 477 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statvfs); 478 sfsp = (struct netbsd32_statvfs *)NETBSD32PTR64(SCARG(uap, buf)); 479 simple_lock(&mountlist_slock); 480 count = 0; 481 sbuf = (struct statvfs *)malloc(sizeof(struct statvfs), M_TEMP, 482 M_WAITOK); 483 s32 = (struct netbsd32_statvfs *) 484 malloc(sizeof(struct netbsd32_statvfs), M_TEMP, M_WAITOK); 485 for (mp = CIRCLEQ_FIRST(&mountlist); mp != (void *)&mountlist; 486 mp = nmp) { 487 if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock)) { 488 nmp = CIRCLEQ_NEXT(mp, mnt_list); 489 continue; 490 } 491 if (sfsp && count < maxcount) { 492 error = dostatvfs(mp, sbuf, l, SCARG(uap, flags), 0); 493 if (error) { 494 simple_lock(&mountlist_slock); 495 nmp = CIRCLEQ_NEXT(mp, mnt_list); 496 vfs_unbusy(mp); 497 continue; 498 } 499 netbsd32_from_statvfs(sbuf, s32); 500 error = copyout(s32, sfsp, sizeof(*sfsp)); 501 if (error) { 502 vfs_unbusy(mp); 503 goto out; 504 } 505 sfsp++; 506 root |= strcmp(sbuf->f_mntonname, "/") == 0; 507 } 508 count++; 509 simple_lock(&mountlist_slock); 510 nmp = CIRCLEQ_NEXT(mp, mnt_list); 511 vfs_unbusy(mp); 512 } 513 simple_unlock(&mountlist_slock); 514 if (root == 0 && p->p_cwdi->cwdi_rdir) { 515 /* 516 * fake a root entry 517 */ 518 if ((error = dostatvfs(p->p_cwdi->cwdi_rdir->v_mount, sbuf, l, 519 SCARG(uap, flags), 1)) != 0) 520 goto out; 521 if (sfsp) { 522 netbsd32_from_statvfs(sbuf, s32); 523 error = copyout(s32, sfsp, sizeof(*sfsp)); 524 } 525 count++; 526 } 527 if (sfsp && count > maxcount) 528 *retval = maxcount; 529 else 530 *retval = count; 531 532 out: 533 free(s32, M_TEMP); 534 free(sbuf, M_TEMP); 535 return (error); 536 } 537 538 int 539 netbsd32_fhstatvfs1(l, v, retval) 540 struct lwp *l; 541 void *v; 542 register_t *retval; 543 { 544 struct netbsd32_fhstatvfs1_args /* { 545 syscallarg(const netbsd32_fhandlep_t) fhp; 546 syscallarg(netbsd32_statvfsp_t) buf; 547 syscallarg(int) flags; 548 } */ *uap = v; 549 struct proc *p = l->l_proc; 550 struct statvfs *sbuf; 551 struct netbsd32_statvfs *s32; 552 fhandle_t fh; 553 struct mount *mp; 554 struct vnode *vp; 555 int error; 556 557 /* 558 * Must be super user 559 */ 560 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 561 return error; 562 563 if ((error = copyin((caddr_t)NETBSD32PTR64(SCARG(uap, fhp)), &fh, 564 sizeof(fhandle_t))) != 0) 565 return error; 566 567 if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL) 568 return ESTALE; 569 if ((error = VFS_FHTOVP(mp, &fh.fh_fid, &vp))) 570 return error; 571 572 sbuf = (struct statvfs *)malloc(sizeof(struct statvfs), M_TEMP, 573 M_WAITOK); 574 mp = vp->v_mount; 575 if ((error = dostatvfs(mp, sbuf, l, SCARG(uap, flags), 1)) != 0) { 576 vput(vp); 577 goto out; 578 } 579 vput(vp); 580 581 s32 = (struct netbsd32_statvfs *) 582 malloc(sizeof(struct netbsd32_statvfs), M_TEMP, M_WAITOK); 583 netbsd32_from_statvfs(sbuf, s32); 584 error = copyout(s32, (caddr_t)NETBSD32PTR64(SCARG(uap, buf)), 585 sizeof(struct netbsd32_statvfs)); 586 free(s32, M_TEMP); 587 588 out: 589 free(sbuf, M_TEMP); 590 return (error); 591 } 592 593 int 594 netbsd32_futimes(l, v, retval) 595 struct lwp *l; 596 void *v; 597 register_t *retval; 598 { 599 struct netbsd32_futimes_args /* { 600 syscallarg(int) fd; 601 syscallarg(const netbsd32_timevalp_t) tptr; 602 } */ *uap = v; 603 int error; 604 struct file *fp; 605 struct proc *p = l->l_proc; 606 607 /* getvnode() will use the descriptor for us */ 608 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 609 return (error); 610 611 error = change_utimes32((struct vnode *)fp->f_data, 612 SCARG(uap, tptr), l); 613 FILE_UNUSE(fp, l); 614 return (error); 615 } 616 617 int 618 netbsd32_getdents(l, v, retval) 619 struct lwp *l; 620 void *v; 621 register_t *retval; 622 { 623 struct netbsd32_getdents_args /* { 624 syscallarg(int) fd; 625 syscallarg(netbsd32_charp) buf; 626 syscallarg(netbsd32_size_t) count; 627 } */ *uap = v; 628 struct file *fp; 629 int error, done; 630 struct proc *p = l->l_proc; 631 632 /* getvnode() will use the descriptor for us */ 633 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 634 return (error); 635 if ((fp->f_flag & FREAD) == 0) { 636 error = EBADF; 637 goto out; 638 } 639 error = vn_readdir(fp, (caddr_t)NETBSD32PTR64(SCARG(uap, buf)), 640 UIO_USERSPACE, SCARG(uap, count), &done, l, 0, 0); 641 *retval = done; 642 out: 643 FILE_UNUSE(fp, l); 644 return (error); 645 } 646 647 int 648 netbsd32_lutimes(l, v, retval) 649 struct lwp *l; 650 void *v; 651 register_t *retval; 652 { 653 struct netbsd32_lutimes_args /* { 654 syscallarg(const netbsd32_charp) path; 655 syscallarg(const netbsd32_timevalp_t) tptr; 656 } */ *uap = v; 657 int error; 658 struct nameidata nd; 659 660 NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, 661 (caddr_t)NETBSD32PTR64(SCARG(uap, path)), l); 662 if ((error = namei(&nd)) != 0) 663 return (error); 664 665 error = change_utimes32(nd.ni_vp, SCARG(uap, tptr), l); 666 667 vrele(nd.ni_vp); 668 return (error); 669 } 670 671 int 672 netbsd32___stat13(l, v, retval) 673 struct lwp *l; 674 void *v; 675 register_t *retval; 676 { 677 struct netbsd32___stat13_args /* { 678 syscallarg(const netbsd32_charp) path; 679 syscallarg(netbsd32_statp_t) ub; 680 } */ *uap = v; 681 struct netbsd32_stat sb32; 682 struct stat sb; 683 int error; 684 struct nameidata nd; 685 caddr_t sg; 686 const char *path; 687 struct proc *p = l->l_proc; 688 689 path = (char *)NETBSD32PTR64(SCARG(uap, path)); 690 sg = stackgap_init(p, 0); 691 CHECK_ALT_EXIST(l, &sg, path); 692 693 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, path, l); 694 if ((error = namei(&nd)) != 0) 695 return (error); 696 error = vn_stat(nd.ni_vp, &sb, l); 697 vput(nd.ni_vp); 698 if (error) 699 return (error); 700 netbsd32_from___stat13(&sb, &sb32); 701 error = copyout(&sb32, (caddr_t)NETBSD32PTR64(SCARG(uap, ub)), 702 sizeof(sb32)); 703 return (error); 704 } 705 706 int 707 netbsd32___fstat13(l, v, retval) 708 struct lwp *l; 709 void *v; 710 register_t *retval; 711 { 712 struct netbsd32___fstat13_args /* { 713 syscallarg(int) fd; 714 syscallarg(netbsd32_statp_t) sb; 715 } */ *uap = v; 716 int fd = SCARG(uap, fd); 717 struct proc *p = l->l_proc; 718 struct filedesc *fdp = p->p_fd; 719 struct file *fp; 720 struct netbsd32_stat sb32; 721 struct stat ub; 722 int error = 0; 723 724 if ((fp = fd_getfile(fdp, fd)) == NULL) 725 return (EBADF); 726 727 FILE_USE(fp); 728 error = (*fp->f_ops->fo_stat)(fp, &ub, l); 729 FILE_UNUSE(fp, l); 730 731 if (error == 0) { 732 netbsd32_from___stat13(&ub, &sb32); 733 error = copyout(&sb32, (caddr_t)NETBSD32PTR64(SCARG(uap, sb)), 734 sizeof(sb32)); 735 } 736 return (error); 737 } 738 739 int 740 netbsd32___lstat13(l, v, retval) 741 struct lwp *l; 742 void *v; 743 register_t *retval; 744 { 745 struct netbsd32___lstat13_args /* { 746 syscallarg(const netbsd32_charp) path; 747 syscallarg(netbsd32_statp_t) ub; 748 } */ *uap = v; 749 struct netbsd32_stat sb32; 750 struct stat sb; 751 int error; 752 struct nameidata nd; 753 caddr_t sg; 754 const char *path; 755 struct proc *p = l->l_proc; 756 757 path = (char *)NETBSD32PTR64(SCARG(uap, path)); 758 sg = stackgap_init(p, 0); 759 CHECK_ALT_EXIST(l, &sg, path); 760 761 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, path, l); 762 if ((error = namei(&nd)) != 0) 763 return (error); 764 error = vn_stat(nd.ni_vp, &sb, l); 765 vput(nd.ni_vp); 766 if (error) 767 return (error); 768 netbsd32_from___stat13(&sb, &sb32); 769 error = copyout(&sb32, (caddr_t)NETBSD32PTR64(SCARG(uap, ub)), 770 sizeof(sb32)); 771 return (error); 772 } 773 774 int 775 netbsd32_preadv(l, v, retval) 776 struct lwp *l; 777 void *v; 778 register_t *retval; 779 { 780 struct netbsd32_preadv_args /* { 781 syscallarg(int) fd; 782 syscallarg(const netbsd32_iovecp_t) iovp; 783 syscallarg(int) iovcnt; 784 syscallarg(int) pad; 785 syscallarg(off_t) offset; 786 } */ *uap = v; 787 struct proc *p = l->l_proc; 788 struct filedesc *fdp = p->p_fd; 789 struct file *fp; 790 struct vnode *vp; 791 off_t offset; 792 int error, fd = SCARG(uap, fd); 793 794 if ((fp = fd_getfile(fdp, fd)) == NULL) 795 return (EBADF); 796 797 if ((fp->f_flag & FREAD) == 0) 798 return (EBADF); 799 800 FILE_USE(fp); 801 802 vp = (struct vnode *)fp->f_data; 803 if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO) { 804 error = ESPIPE; 805 goto out; 806 } 807 808 offset = SCARG(uap, offset); 809 810 /* 811 * XXX This works because no file systems actually 812 * XXX take any action on the seek operation. 813 */ 814 if ((error = VOP_SEEK(vp, fp->f_offset, offset, fp->f_cred)) != 0) 815 goto out; 816 817 return (dofilereadv32(l, fd, fp, 818 (struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)), 819 SCARG(uap, iovcnt), &offset, 0, retval)); 820 821 out: 822 FILE_UNUSE(fp, l); 823 return (error); 824 } 825 826 int 827 netbsd32_pwritev(l, v, retval) 828 struct lwp *l; 829 void *v; 830 register_t *retval; 831 { 832 struct netbsd32_pwritev_args /* { 833 syscallarg(int) fd; 834 syscallarg(const netbsd32_iovecp_t) iovp; 835 syscallarg(int) iovcnt; 836 syscallarg(int) pad; 837 syscallarg(off_t) offset; 838 } */ *uap = v; 839 struct proc *p = l->l_proc; 840 struct filedesc *fdp = p->p_fd; 841 struct file *fp; 842 struct vnode *vp; 843 off_t offset; 844 int error, fd = SCARG(uap, fd); 845 846 if ((fp = fd_getfile(fdp, fd)) == NULL) 847 return (EBADF); 848 849 if ((fp->f_flag & FWRITE) == 0) 850 return (EBADF); 851 852 FILE_USE(fp); 853 854 vp = (struct vnode *)fp->f_data; 855 if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO) { 856 error = ESPIPE; 857 goto out; 858 } 859 860 offset = SCARG(uap, offset); 861 862 /* 863 * XXX This works because no file systems actually 864 * XXX take any action on the seek operation. 865 */ 866 if ((error = VOP_SEEK(vp, fp->f_offset, offset, fp->f_cred)) != 0) 867 goto out; 868 869 return (dofilewritev32(l, fd, fp, 870 (struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)), 871 SCARG(uap, iovcnt), &offset, 0, retval)); 872 873 out: 874 FILE_UNUSE(fp, l); 875 return (error); 876 } 877 878 /* 879 * Find pathname of process's current directory. 880 * 881 * Use vfs vnode-to-name reverse cache; if that fails, fall back 882 * to reading directory contents. 883 */ 884 /* XXX NH Why does this exist */ 885 int 886 getcwd_common __P((struct vnode *, struct vnode *, 887 char **, char *, int, int, struct lwp *)); 888 889 int netbsd32___getcwd(l, v, retval) 890 struct lwp *l; 891 void *v; 892 register_t *retval; 893 { 894 struct netbsd32___getcwd_args /* { 895 syscallarg(char *) bufp; 896 syscallarg(size_t) length; 897 } */ *uap = v; 898 struct proc *p = l->l_proc; 899 int error; 900 char *path; 901 char *bp, *bend; 902 int len = (int)SCARG(uap, length); 903 int lenused; 904 905 if (len > MAXPATHLEN*4) 906 len = MAXPATHLEN*4; 907 else if (len < 2) 908 return ERANGE; 909 910 path = (char *)malloc(len, M_TEMP, M_WAITOK); 911 if (!path) 912 return ENOMEM; 913 914 bp = &path[len]; 915 bend = bp; 916 *(--bp) = '\0'; 917 918 /* 919 * 5th argument here is "max number of vnodes to traverse". 920 * Since each entry takes up at least 2 bytes in the output buffer, 921 * limit it to N/2 vnodes for an N byte buffer. 922 */ 923 #define GETCWD_CHECK_ACCESS 0x0001 924 error = getcwd_common (p->p_cwdi->cwdi_cdir, NULL, &bp, path, len/2, 925 GETCWD_CHECK_ACCESS, l); 926 927 if (error) 928 goto out; 929 lenused = bend - bp; 930 *retval = lenused; 931 /* put the result into user buffer */ 932 error = copyout(bp, (caddr_t)NETBSD32PTR64(SCARG(uap, bufp)), lenused); 933 934 out: 935 free(path, M_TEMP); 936 return error; 937 } 938
Indexes created Fri Sep 26 20:09:58 GMT 2025