netbsd32_fs.c revision 1.29
1 /* $NetBSD: netbsd32_fs.c,v 1.29 2006/07/14 22:09:01 martin 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 1.29 2006/07/14 22:09:01 martin 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 #include <sys/dirent.h> 57 #include <sys/kauth.h> 58 59 #include <compat/netbsd32/netbsd32.h> 60 #include <compat/netbsd32/netbsd32_syscallargs.h> 61 #include <compat/netbsd32/netbsd32_conv.h> 62 #include <compat/sys/mount.h> 63 64 65 static int dofilereadv32 __P((struct lwp *, int, struct file *, struct netbsd32_iovec *, 66 int, off_t *, int, register_t *)); 67 static int dofilewritev32 __P((struct lwp *, int, struct file *, struct netbsd32_iovec *, 68 int, off_t *, int, register_t *)); 69 static int change_utimes32 __P((struct vnode *, netbsd32_timevalp_t, struct lwp *)); 70 71 int 72 netbsd32_readv(l, v, retval) 73 struct lwp *l; 74 void *v; 75 register_t *retval; 76 { 77 struct netbsd32_readv_args /* { 78 syscallarg(int) fd; 79 syscallarg(const netbsd32_iovecp_t) iovp; 80 syscallarg(int) iovcnt; 81 } */ *uap = v; 82 int fd = SCARG(uap, fd); 83 struct proc *p = l->l_proc; 84 struct file *fp; 85 struct filedesc *fdp = p->p_fd; 86 87 if ((fp = fd_getfile(fdp, fd)) == NULL) 88 return (EBADF); 89 90 if ((fp->f_flag & FREAD) == 0) 91 return (EBADF); 92 93 FILE_USE(fp); 94 95 return (dofilereadv32(l, fd, fp, 96 (struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)), 97 SCARG(uap, iovcnt), &fp->f_offset, FOF_UPDATE_OFFSET, retval)); 98 } 99 100 /* Damn thing copies in the iovec! */ 101 int 102 dofilereadv32(l, fd, fp, iovp, iovcnt, offset, flags, retval) 103 struct lwp *l; 104 int fd; 105 struct file *fp; 106 struct netbsd32_iovec *iovp; 107 int iovcnt; 108 off_t *offset; 109 int flags; 110 register_t *retval; 111 { 112 struct uio auio; 113 struct iovec *iov; 114 struct iovec *needfree; 115 struct iovec aiov[UIO_SMALLIOV]; 116 long i, cnt, error = 0; 117 u_int iovlen; 118 #ifdef KTRACE 119 struct iovec *ktriov = NULL; 120 #endif 121 122 /* note: can't use iovlen until iovcnt is validated */ 123 iovlen = iovcnt * sizeof(struct iovec); 124 if ((u_int)iovcnt > UIO_SMALLIOV) { 125 if ((u_int)iovcnt > IOV_MAX) { 126 error = EINVAL; 127 goto out; 128 } 129 iov = malloc(iovlen, M_IOV, M_WAITOK); 130 needfree = iov; 131 } else if ((u_int)iovcnt > 0) { 132 iov = aiov; 133 needfree = NULL; 134 } else { 135 error = EINVAL; 136 goto out; 137 } 138 139 auio.uio_iov = iov; 140 auio.uio_iovcnt = iovcnt; 141 auio.uio_rw = UIO_READ; 142 auio.uio_vmspace = l->l_proc->p_vmspace; 143 error = netbsd32_to_iovecin(iovp, iov, iovcnt); 144 if (error) 145 goto done; 146 auio.uio_resid = 0; 147 for (i = 0; i < iovcnt; i++) { 148 auio.uio_resid += iov->iov_len; 149 /* 150 * Reads return ssize_t because -1 is returned on error. 151 * Therefore we must restrict the length to SSIZE_MAX to 152 * avoid garbage return values. 153 */ 154 if (iov->iov_len > SSIZE_MAX || auio.uio_resid > SSIZE_MAX) { 155 error = EINVAL; 156 goto done; 157 } 158 iov++; 159 } 160 #ifdef KTRACE 161 /* 162 * if tracing, save a copy of iovec 163 */ 164 if (KTRPOINT(l->l_proc, KTR_GENIO)) { 165 ktriov = malloc(iovlen, M_TEMP, M_WAITOK); 166 memcpy((caddr_t)ktriov, (caddr_t)auio.uio_iov, iovlen); 167 } 168 #endif 169 cnt = auio.uio_resid; 170 error = (*fp->f_ops->fo_read)(fp, offset, &auio, fp->f_cred, flags); 171 if (error) 172 if (auio.uio_resid != cnt && (error == ERESTART || 173 error == EINTR || error == EWOULDBLOCK)) 174 error = 0; 175 cnt -= auio.uio_resid; 176 #ifdef KTRACE 177 if (KTRPOINT(l->l_proc, KTR_GENIO)) 178 if (error == 0) { 179 ktrgenio(l, fd, UIO_READ, ktriov, cnt, 180 error); 181 free(ktriov, M_TEMP); 182 } 183 #endif 184 *retval = cnt; 185 done: 186 if (needfree) 187 free(needfree, M_IOV); 188 out: 189 FILE_UNUSE(fp, l); 190 return (error); 191 } 192 193 int 194 netbsd32_writev(l, v, retval) 195 struct lwp *l; 196 void *v; 197 register_t *retval; 198 { 199 struct netbsd32_writev_args /* { 200 syscallarg(int) fd; 201 syscallarg(const netbsd32_iovecp_t) iovp; 202 syscallarg(int) iovcnt; 203 } */ *uap = v; 204 int fd = SCARG(uap, fd); 205 struct file *fp; 206 struct proc *p = l->l_proc; 207 struct filedesc *fdp = p->p_fd; 208 209 if ((fp = fd_getfile(fdp, fd)) == NULL) 210 return (EBADF); 211 212 if ((fp->f_flag & FWRITE) == 0) 213 return (EBADF); 214 215 FILE_USE(fp); 216 217 return (dofilewritev32(l, fd, fp, 218 (struct netbsd32_iovec *)NETBSD32PTR64(SCARG(uap, iovp)), 219 SCARG(uap, iovcnt), &fp->f_offset, FOF_UPDATE_OFFSET, retval)); 220 } 221 222 int 223 dofilewritev32(l, fd, fp, iovp, iovcnt, offset, flags, retval) 224 struct lwp *l; 225 int fd; 226 struct file *fp; 227 struct netbsd32_iovec *iovp; 228 int iovcnt; 229 off_t *offset; 230 int flags; 231 register_t *retval; 232 { 233 struct uio auio; 234 struct iovec *iov; 235 struct iovec *needfree; 236 struct iovec aiov[UIO_SMALLIOV]; 237 struct proc *p = l->l_proc; 238 long i, cnt, error = 0; 239 u_int iovlen; 240 #ifdef KTRACE 241 struct iovec *ktriov = NULL; 242 #endif 243 244 /* note: can't use iovlen until iovcnt is validated */ 245 iovlen = iovcnt * sizeof(struct iovec); 246 if ((u_int)iovcnt > UIO_SMALLIOV) { 247 if ((u_int)iovcnt > IOV_MAX) { 248 error = EINVAL; 249 goto out; 250 } 251 iov = malloc(iovlen, M_IOV, M_WAITOK); 252 needfree = iov; 253 } else if ((u_int)iovcnt > 0) { 254 iov = aiov; 255 needfree = NULL; 256 } else { 257 error = EINVAL; 258 goto out; 259 } 260 261 auio.uio_iov = iov; 262 auio.uio_iovcnt = iovcnt; 263 auio.uio_rw = UIO_WRITE; 264 auio.uio_vmspace = l->l_proc->p_vmspace; 265 error = netbsd32_to_iovecin(iovp, iov, iovcnt); 266 if (error) 267 goto done; 268 auio.uio_resid = 0; 269 for (i = 0; i < iovcnt; i++) { 270 auio.uio_resid += iov->iov_len; 271 /* 272 * Writes return ssize_t because -1 is returned on error. 273 * Therefore we must restrict the length to SSIZE_MAX to 274 * avoid garbage return values. 275 */ 276 if (iov->iov_len > SSIZE_MAX || auio.uio_resid > SSIZE_MAX) { 277 error = EINVAL; 278 goto done; 279 } 280 iov++; 281 } 282 #ifdef KTRACE 283 /* 284 * if tracing, save a copy of iovec 285 */ 286 if (KTRPOINT(p, KTR_GENIO)) { 287 ktriov = malloc(iovlen, M_TEMP, M_WAITOK); 288 memcpy((caddr_t)ktriov, (caddr_t)auio.uio_iov, iovlen); 289 } 290 #endif 291 cnt = auio.uio_resid; 292 error = (*fp->f_ops->fo_write)(fp, offset, &auio, fp->f_cred, flags); 293 if (error) { 294 if (auio.uio_resid != cnt && (error == ERESTART || 295 error == EINTR || error == EWOULDBLOCK)) 296 error = 0; 297 if (error == EPIPE) 298 psignal(p, SIGPIPE); 299 } 300 cnt -= auio.uio_resid; 301 #ifdef KTRACE 302 if (KTRPOINT(p, KTR_GENIO)) 303 if (error == 0) { 304 ktrgenio(l, fd, UIO_WRITE, ktriov, cnt, 305 error); 306 free(ktriov, M_TEMP); 307 } 308 #endif 309 *retval = cnt; 310 done: 311 if (needfree) 312 free(needfree, M_IOV); 313 out: 314 FILE_UNUSE(fp, l); 315 return (error); 316 } 317 318 int 319 netbsd32_utimes(l, v, retval) 320 struct lwp *l; 321 void *v; 322 register_t *retval; 323 { 324 struct netbsd32_utimes_args /* { 325 syscallarg(const netbsd32_charp) path; 326 syscallarg(const netbsd32_timevalp_t) tptr; 327 } */ *uap = v; 328 int error; 329 struct nameidata nd; 330 331 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, 332 (char *)NETBSD32PTR64(SCARG(uap, path)), l); 333 if ((error = namei(&nd)) != 0) 334 return (error); 335 336 error = change_utimes32(nd.ni_vp, SCARG(uap, tptr), l); 337 338 vrele(nd.ni_vp); 339 return (error); 340 } 341 342 /* 343 * Common routine to set access and modification times given a vnode. 344 */ 345 static int 346 change_utimes32(vp, tptr, l) 347 struct vnode *vp; 348 netbsd32_timevalp_t tptr; 349 struct lwp *l; 350 { 351 struct netbsd32_timeval tv32[2]; 352 struct timeval tv[2]; 353 struct proc *p = l->l_proc; 354 struct vattr vattr; 355 int error; 356 357 VATTR_NULL(&vattr); 358 if (tptr == 0) { 359 microtime(&tv[0]); 360 tv[1] = tv[0]; 361 vattr.va_vaflags |= VA_UTIMES_NULL; 362 } else { 363 error = copyin((caddr_t)NETBSD32PTR64(tptr), tv32, 364 sizeof(tv32)); 365 if (error) 366 return (error); 367 netbsd32_to_timeval(&tv32[0], &tv[0]); 368 netbsd32_to_timeval(&tv32[1], &tv[1]); 369 } 370 VOP_LEASE(vp, l, p->p_cred, LEASE_WRITE); 371 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 372 vattr.va_atime.tv_sec = tv[0].tv_sec; 373 vattr.va_atime.tv_nsec = tv[0].tv_usec * 1000; 374 vattr.va_mtime.tv_sec = tv[1].tv_sec; 375 vattr.va_mtime.tv_nsec = tv[1].tv_usec * 1000; 376 error = VOP_SETATTR(vp, &vattr, p->p_cred, l); 377 VOP_UNLOCK(vp, 0); 378 return (error); 379 } 380 381 int 382 netbsd32_statvfs1(l, v, retval) 383 struct lwp *l; 384 void *v; 385 register_t *retval; 386 { 387 struct netbsd32_statvfs1_args /* { 388 syscallarg(const netbsd32_charp) path; 389 syscallarg(netbsd32_statvfsp_t) buf; 390 syscallarg(int) flags; 391 } */ *uap = v; 392 struct mount *mp; 393 struct statvfs *sbuf; 394 struct netbsd32_statvfs *s32; 395 struct nameidata nd; 396 int error; 397 398 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, 399 (char *)NETBSD32PTR64(SCARG(uap, path)), l); 400 if ((error = namei(&nd)) != 0) 401 return (error); 402 /* Allocating on the stack would blow it up */ 403 sbuf = (struct statvfs *)malloc(sizeof(struct statvfs), M_TEMP, 404 M_WAITOK); 405 mp = nd.ni_vp->v_mount; 406 vrele(nd.ni_vp); 407 if ((error = dostatvfs(mp, sbuf, l, SCARG(uap, flags), 1)) != 0) 408 goto out; 409 s32 = (struct netbsd32_statvfs *) 410 malloc(sizeof(struct netbsd32_statvfs), M_TEMP, M_WAITOK); 411 netbsd32_from_statvfs(sbuf, s32); 412 error = copyout(s32, (caddr_t)NETBSD32PTR64(SCARG(uap, buf)), 413 sizeof(struct netbsd32_statvfs)); 414 free(s32, M_TEMP); 415 out: 416 free(sbuf, M_TEMP); 417 return (error); 418 } 419 420 int 421 netbsd32_fstatvfs1(l, v, retval) 422 struct lwp *l; 423 void *v; 424 register_t *retval; 425 { 426 struct netbsd32_fstatvfs1_args /* { 427 syscallarg(int) fd; 428 syscallarg(netbsd32_statvfsp_t) buf; 429 syscallarg(int) flags; 430 } */ *uap = v; 431 struct proc *p = l->l_proc; 432 struct file *fp; 433 struct mount *mp; 434 struct statvfs *sbuf; 435 struct netbsd32_statvfs *s32; 436 int error; 437 438 /* getvnode() will use the descriptor for us */ 439 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 440 return (error); 441 mp = ((struct vnode *)fp->f_data)->v_mount; 442 sbuf = (struct statvfs *)malloc(sizeof(struct statvfs), M_TEMP, 443 M_WAITOK); 444 if ((error = dostatvfs(mp, sbuf, l, SCARG(uap, flags), 1)) != 0) 445 goto out; 446 s32 = (struct netbsd32_statvfs *) 447 malloc(sizeof(struct netbsd32_statvfs), M_TEMP, M_WAITOK); 448 netbsd32_from_statvfs(sbuf, s32); 449 error = copyout(s32, (caddr_t)NETBSD32PTR64(SCARG(uap, buf)), 450 sizeof(struct netbsd32_statvfs)); 451 free(s32, M_TEMP); 452 out: 453 free(sbuf, M_TEMP); 454 FILE_UNUSE(fp, l); 455 return error; 456 } 457 458 int 459 netbsd32_getvfsstat(l, v, retval) 460 struct lwp *l; 461 void *v; 462 register_t *retval; 463 { 464 struct netbsd32_getvfsstat_args /* { 465 syscallarg(netbsd32_statvfsp_t) buf; 466 syscallarg(netbsd32_size_t) bufsize; 467 syscallarg(int) flags; 468 } */ *uap = v; 469 int root = 0; 470 struct proc *p = l->l_proc; 471 struct mount *mp, *nmp; 472 struct statvfs *sbuf; 473 struct netbsd32_statvfs *sfsp; 474 struct netbsd32_statvfs *s32; 475 size_t count, maxcount; 476 int error = 0; 477 478 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statvfs); 479 sfsp = (struct netbsd32_statvfs *)NETBSD32PTR64(SCARG(uap, buf)); 480 sbuf = (struct statvfs *)malloc(sizeof(struct statvfs), M_TEMP, 481 M_WAITOK); 482 s32 = (struct netbsd32_statvfs *) 483 malloc(sizeof(struct netbsd32_statvfs), M_TEMP, M_WAITOK); 484 simple_lock(&mountlist_slock); 485 count = 0; 486 for (mp = CIRCLEQ_FIRST(&mountlist); mp != (void *)&mountlist; 487 mp = nmp) { 488 if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock)) { 489 nmp = CIRCLEQ_NEXT(mp, mnt_list); 490 continue; 491 } 492 if (sfsp && count < maxcount) { 493 error = dostatvfs(mp, sbuf, l, SCARG(uap, flags), 0); 494 if (error) { 495 simple_lock(&mountlist_slock); 496 nmp = CIRCLEQ_NEXT(mp, mnt_list); 497 vfs_unbusy(mp); 498 continue; 499 } 500 netbsd32_from_statvfs(sbuf, s32); 501 error = copyout(s32, sfsp, sizeof(*sfsp)); 502 if (error) { 503 vfs_unbusy(mp); 504 goto out; 505 } 506 sfsp++; 507 root |= strcmp(sbuf->f_mntonname, "/") == 0; 508 } 509 count++; 510 simple_lock(&mountlist_slock); 511 nmp = CIRCLEQ_NEXT(mp, mnt_list); 512 vfs_unbusy(mp); 513 } 514 simple_unlock(&mountlist_slock); 515 if (root == 0 && p->p_cwdi->cwdi_rdir) { 516 /* 517 * fake a root entry 518 */ 519 if ((error = dostatvfs(p->p_cwdi->cwdi_rdir->v_mount, sbuf, l, 520 SCARG(uap, flags), 1)) != 0) 521 goto out; 522 if (sfsp) { 523 netbsd32_from_statvfs(sbuf, s32); 524 error = copyout(s32, sfsp, sizeof(*sfsp)); 525 } 526 count++; 527 } 528 if (sfsp && count > maxcount) 529 *retval = maxcount; 530 else 531 *retval = count; 532 533 out: 534 free(s32, M_TEMP); 535 free(sbuf, M_TEMP); 536 return (error); 537 } 538 539 int 540 netbsd32_fhstatvfs1(l, v, retval) 541 struct lwp *l; 542 void *v; 543 register_t *retval; 544 { 545 struct netbsd32_fhstatvfs1_args /* { 546 syscallarg(const netbsd32_fhandlep_t) fhp; 547 syscallarg(netbsd32_statvfsp_t) buf; 548 syscallarg(int) flags; 549 } */ *uap = v; 550 struct proc *p = l->l_proc; 551 struct statvfs *sbuf; 552 struct netbsd32_statvfs *s32; 553 fhandle_t *fh; 554 struct vnode *vp; 555 int error; 556 557 /* 558 * Must be super user 559 */ 560 if ((error = kauth_authorize_generic(p->p_cred, KAUTH_GENERIC_ISSUSER, &p->p_acflag)) != 0) 561 return error; 562 563 if ((error = vfs_copyinfh((caddr_t)NETBSD32PTR64(SCARG(uap, fhp)), &fh)) 564 != 0) 565 goto bad; 566 if ((error = vfs_fhtovp(fh, &vp)) != 0) 567 goto bad; 568 569 sbuf = (struct statvfs *)malloc(sizeof(struct statvfs), M_TEMP, 570 M_WAITOK); 571 error = dostatvfs(vp->v_mount, sbuf, l, SCARG(uap, flags), 1); 572 vput(vp); 573 if (error != 0) 574 goto out; 575 576 s32 = (struct netbsd32_statvfs *) 577 malloc(sizeof(struct netbsd32_statvfs), M_TEMP, M_WAITOK); 578 netbsd32_from_statvfs(sbuf, s32); 579 error = copyout(s32, (caddr_t)NETBSD32PTR64(SCARG(uap, buf)), 580 sizeof(struct netbsd32_statvfs)); 581 free(s32, M_TEMP); 582 583 out: 584 free(sbuf, M_TEMP); 585 bad: 586 vfs_copyinfh_free(fh); 587 return (error); 588 } 589 590 int 591 netbsd32_futimes(l, v, retval) 592 struct lwp *l; 593 void *v; 594 register_t *retval; 595 { 596 struct netbsd32_futimes_args /* { 597 syscallarg(int) fd; 598 syscallarg(const netbsd32_timevalp_t) tptr; 599 } */ *uap = v; 600 int error; 601 struct file *fp; 602 struct proc *p = l->l_proc; 603 604 /* getvnode() will use the descriptor for us */ 605 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 606 return (error); 607 608 error = change_utimes32((struct vnode *)fp->f_data, 609 SCARG(uap, tptr), l); 610 FILE_UNUSE(fp, l); 611 return (error); 612 } 613 614 int 615 netbsd32_sys___getdents30(l, v, retval) 616 struct lwp *l; 617 void *v; 618 register_t *retval; 619 { 620 struct netbsd32_sys___getdents30_args /* { 621 syscallarg(int) fd; 622 syscallarg(netbsd32_charp) buf; 623 syscallarg(netbsd32_size_t) count; 624 } */ *uap = v; 625 struct file *fp; 626 int error, done; 627 struct proc *p = l->l_proc; 628 629 /* getvnode() will use the descriptor for us */ 630 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 631 return (error); 632 if ((fp->f_flag & FREAD) == 0) { 633 error = EBADF; 634 goto out; 635 } 636 error = vn_readdir(fp, (caddr_t)NETBSD32PTR64(SCARG(uap, buf)), 637 UIO_USERSPACE, SCARG(uap, count), &done, l, 0, 0); 638 *retval = done; 639 out: 640 FILE_UNUSE(fp, l); 641 return (error); 642 } 643 644 int 645 netbsd32_lutimes(l, v, retval) 646 struct lwp *l; 647 void *v; 648 register_t *retval; 649 { 650 struct netbsd32_lutimes_args /* { 651 syscallarg(const netbsd32_charp) path; 652 syscallarg(const netbsd32_timevalp_t) tptr; 653 } */ *uap = v; 654 int error; 655 struct nameidata nd; 656 657 NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, 658 (caddr_t)NETBSD32PTR64(SCARG(uap, path)), l); 659 if ((error = namei(&nd)) != 0) 660 return (error); 661 662 error = change_utimes32(nd.ni_vp, SCARG(uap, tptr), l); 663 664 vrele(nd.ni_vp); 665 return (error); 666 } 667 668 int 669 netbsd32_sys___stat30(l, v, retval) 670 struct lwp *l; 671 void *v; 672 register_t *retval; 673 { 674 struct netbsd32_sys___stat30_args /* { 675 syscallarg(const netbsd32_charp) path; 676 syscallarg(netbsd32_statp_t) ub; 677 } */ *uap = v; 678 struct netbsd32_stat sb32; 679 struct stat sb; 680 int error; 681 struct nameidata nd; 682 caddr_t sg; 683 const char *path; 684 struct proc *p = l->l_proc; 685 686 path = (char *)NETBSD32PTR64(SCARG(uap, path)); 687 sg = stackgap_init(p, 0); 688 CHECK_ALT_EXIST(l, &sg, path); 689 690 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, path, l); 691 if ((error = namei(&nd)) != 0) 692 return (error); 693 error = vn_stat(nd.ni_vp, &sb, l); 694 vput(nd.ni_vp); 695 if (error) 696 return (error); 697 netbsd32_from___stat30(&sb, &sb32); 698 error = copyout(&sb32, (caddr_t)NETBSD32PTR64(SCARG(uap, ub)), 699 sizeof(sb32)); 700 return (error); 701 } 702 703 int 704 netbsd32_sys___fstat30(l, v, retval) 705 struct lwp *l; 706 void *v; 707 register_t *retval; 708 { 709 struct netbsd32_sys___fstat30_args /* { 710 syscallarg(int) fd; 711 syscallarg(netbsd32_statp_t) sb; 712 } */ *uap = v; 713 int fd = SCARG(uap, fd); 714 struct proc *p = l->l_proc; 715 struct filedesc *fdp = p->p_fd; 716 struct file *fp; 717 struct netbsd32_stat sb32; 718 struct stat ub; 719 int error = 0; 720 721 if ((fp = fd_getfile(fdp, fd)) == NULL) 722 return (EBADF); 723 724 FILE_USE(fp); 725 error = (*fp->f_ops->fo_stat)(fp, &ub, l); 726 FILE_UNUSE(fp, l); 727 728 if (error == 0) { 729 netbsd32_from___stat30(&ub, &sb32); 730 error = copyout(&sb32, (caddr_t)NETBSD32PTR64(SCARG(uap, sb)), 731 sizeof(sb32)); 732 } 733 return (error); 734 } 735 736 int 737 netbsd32_sys___lstat30(l, v, retval) 738 struct lwp *l; 739 void *v; 740 register_t *retval; 741 { 742 struct netbsd32_sys___lstat30_args /* { 743 syscallarg(const netbsd32_charp) path; 744 syscallarg(netbsd32_statp_t) ub; 745 } */ *uap = v; 746 struct netbsd32_stat sb32; 747 struct stat sb; 748 int error; 749 struct nameidata nd; 750 caddr_t sg; 751 const char *path; 752 struct proc *p = l->l_proc; 753 754 path = (char *)NETBSD32PTR64(SCARG(uap, path)); 755 sg = stackgap_init(p, 0); 756 CHECK_ALT_EXIST(l, &sg, path); 757 758 NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, path, l); 759 if ((error = namei(&nd)) != 0) 760 return (error); 761 error = vn_stat(nd.ni_vp, &sb, l); 762 vput(nd.ni_vp); 763 if (error) 764 return (error); 765 netbsd32_from___stat30(&sb, &sb32); 766 error = copyout(&sb32, (caddr_t)NETBSD32PTR64(SCARG(uap, ub)), 767 sizeof(sb32)); 768 return (error); 769 } 770 771 int netbsd32_sys___fhstat30(l, v, retval) 772 struct lwp *l; 773 void *v; 774 register_t *retval; 775 { 776 struct netbsd32_sys___fhstat30_args /* { 777 syscallarg(const netbsd32_fhandlep_t) fhp; 778 syscallarg(netbsd32_statp_t) sb; 779 } */ *uap = v; 780 struct proc *p = l->l_proc; 781 struct stat sb; 782 struct netbsd32_stat sb32; 783 int error; 784 fhandle_t *fh; 785 struct vnode *vp; 786 787 /* 788 * Must be super user 789 */ 790 if ((error = kauth_authorize_generic(p->p_cred, KAUTH_GENERIC_ISSUSER, 791 &p->p_acflag))) 792 return error; 793 794 if ((error = vfs_copyinfh(NETBSD32PTR64(SCARG(uap, fhp)), &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, (caddr_t)NETBSD32PTR64(SCARG(uap, bufp)), lenused); 970 971 out: 972 free(path, M_TEMP); 973 return error; 974 } 975
Indexes created Mon Sep 22 21:09:42 GMT 2025