1 /*- 2 * Copyright (c) 1994-1995 S�ren Schmidt 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include "opt_compat.h" 32 #include "opt_mac.h" 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/conf.h> 37 #include <sys/dirent.h> 38 #include <sys/fcntl.h> 39 #include <sys/file.h> 40 #include <sys/filedesc.h> 41 #include <sys/lock.h> 42 #include <sys/mac.h> 43 #include <sys/malloc.h> 44 #include <sys/mount.h> 45 #include <sys/mutex.h> 46 #include <sys/proc.h> 47 #include <sys/syscallsubr.h> 48 #include <sys/sysproto.h> 49 #include <sys/tty.h> 50 #include <sys/vnode.h> 51 52 #include <ufs/ufs/extattr.h> 53 #include <ufs/ufs/quota.h> 54 #include <ufs/ufs/ufsmount.h> 55 56 #include <machine/../linux/linux.h> 57 #include <machine/../linux/linux_proto.h> 58 #include <compat/linux/linux_util.h> 59 60 #ifndef __alpha__ 61 int 62 linux_creat(struct thread *td, struct linux_creat_args *args) 63 { 64 char *path; 65 int error; 66 67 LCONVPATHEXIST(td, args->path, &path); 68 69 #ifdef DEBUG 70 if (ldebug(creat)) 71 printf(ARGS(creat, "%s, %d"), path, args->mode); 72 #endif 73 error = kern_open(td, path, UIO_SYSSPACE, O_WRONLY | O_CREAT | O_TRUNC, 74 args->mode); 75 LFREEPATH(path); 76 return (error); 77 } 78 #endif /*!__alpha__*/ 79 80 int 81 linux_open(struct thread *td, struct linux_open_args *args) 82 { 83 struct proc *p = td->td_proc; 84 char *path; 85 int bsd_flags, error; 86 87 if (args->flags & LINUX_O_CREAT) 88 LCONVPATHCREAT(td, args->path, &path); 89 else 90 LCONVPATHEXIST(td, args->path, &path); 91 92 #ifdef DEBUG 93 if (ldebug(open)) 94 printf(ARGS(open, "%s, 0x%x, 0x%x"), 95 path, args->flags, args->mode); 96 #endif 97 bsd_flags = 0; 98 if (args->flags & LINUX_O_RDONLY) 99 bsd_flags |= O_RDONLY; 100 if (args->flags & LINUX_O_WRONLY) 101 bsd_flags |= O_WRONLY; 102 if (args->flags & LINUX_O_RDWR) 103 bsd_flags |= O_RDWR; 104 if (args->flags & LINUX_O_NDELAY) 105 bsd_flags |= O_NONBLOCK; 106 if (args->flags & LINUX_O_APPEND) 107 bsd_flags |= O_APPEND; 108 if (args->flags & LINUX_O_SYNC) 109 bsd_flags |= O_FSYNC; 110 if (args->flags & LINUX_O_NONBLOCK) 111 bsd_flags |= O_NONBLOCK; 112 if (args->flags & LINUX_FASYNC) 113 bsd_flags |= O_ASYNC; 114 if (args->flags & LINUX_O_CREAT) 115 bsd_flags |= O_CREAT; 116 if (args->flags & LINUX_O_TRUNC) 117 bsd_flags |= O_TRUNC; 118 if (args->flags & LINUX_O_EXCL) 119 bsd_flags |= O_EXCL; 120 if (args->flags & LINUX_O_NOCTTY) 121 bsd_flags |= O_NOCTTY; 122 123 error = kern_open(td, path, UIO_SYSSPACE, bsd_flags, args->mode); 124 PROC_LOCK(p); 125 if (!error && !(bsd_flags & O_NOCTTY) && 126 SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 127 struct file *fp; 128 129 error = fget(td, td->td_retval[0], &fp); 130 PROC_UNLOCK(p); 131 if (!error) { 132 if (fp->f_type == DTYPE_VNODE) 133 fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, td->td_ucred, 134 td); 135 fdrop(fp, td); 136 } 137 } else { 138 PROC_UNLOCK(p); 139 #ifdef DEBUG 140 if (ldebug(open)) 141 printf(LMSG("open returns error %d"), error); 142 #endif 143 } 144 LFREEPATH(path); 145 return error; 146 } 147 148 int 149 linux_lseek(struct thread *td, struct linux_lseek_args *args) 150 { 151 152 struct lseek_args /* { 153 int fd; 154 int pad; 155 off_t offset; 156 int whence; 157 } */ tmp_args; 158 int error; 159 160 #ifdef DEBUG 161 if (ldebug(lseek)) 162 printf(ARGS(lseek, "%d, %ld, %d"), 163 args->fdes, (long)args->off, args->whence); 164 #endif 165 tmp_args.fd = args->fdes; 166 tmp_args.offset = (off_t)args->off; 167 tmp_args.whence = args->whence; 168 error = lseek(td, &tmp_args); 169 return error; 170 } 171 172 #ifndef __alpha__ 173 int 174 linux_llseek(struct thread *td, struct linux_llseek_args *args) 175 { 176 struct lseek_args bsd_args; 177 int error; 178 off_t off; 179 180 #ifdef DEBUG 181 if (ldebug(llseek)) 182 printf(ARGS(llseek, "%d, %d:%d, %d"), 183 args->fd, args->ohigh, args->olow, args->whence); 184 #endif 185 off = (args->olow) | (((off_t) args->ohigh) << 32); 186 187 bsd_args.fd = args->fd; 188 bsd_args.offset = off; 189 bsd_args.whence = args->whence; 190 191 if ((error = lseek(td, &bsd_args))) 192 return error; 193 194 if ((error = copyout(td->td_retval, args->res, sizeof (off_t)))) 195 return error; 196 197 td->td_retval[0] = 0; 198 return 0; 199 } 200 #endif /*!__alpha__*/ 201 202 #ifndef __alpha__ 203 int 204 linux_readdir(struct thread *td, struct linux_readdir_args *args) 205 { 206 struct linux_getdents_args lda; 207 208 lda.fd = args->fd; 209 lda.dent = args->dent; 210 lda.count = 1; 211 return linux_getdents(td, &lda); 212 } 213 #endif /*!__alpha__*/ 214 215 /* 216 * Note that linux_getdents(2) and linux_getdents64(2) have the same 217 * arguments. They only differ in the definition of struct dirent they 218 * operate on. We use this to common the code, with the exception of 219 * accessing struct dirent. Note that linux_readdir(2) is implemented 220 * by means of linux_getdents(2). In this case we never operate on 221 * struct dirent64 and thus don't need to handle it... 222 */ 223 224 struct l_dirent { 225 l_long d_ino; 226 l_off_t d_off; 227 l_ushort d_reclen; 228 char d_name[LINUX_NAME_MAX + 1]; 229 }; 230 231 struct l_dirent64 { 232 uint64_t d_ino; 233 int64_t d_off; 234 l_ushort d_reclen; 235 u_char d_type; 236 char d_name[LINUX_NAME_MAX + 1]; 237 }; 238 239 #define LINUX_RECLEN(de,namlen) \ 240 ALIGN((((char *)&(de)->d_name - (char *)de) + (namlen) + 1)) 241 242 #define LINUX_DIRBLKSIZ 512 243 244 static int 245 getdents_common(struct thread *td, struct linux_getdents64_args *args, 246 int is64bit) 247 { 248 struct dirent *bdp; 249 struct vnode *vp; 250 caddr_t inp, buf; /* BSD-format */ 251 int len, reclen; /* BSD-format */ 252 caddr_t outp; /* Linux-format */ 253 int resid, linuxreclen=0; /* Linux-format */ 254 struct file *fp; 255 struct uio auio; 256 struct iovec aiov; 257 struct vattr va; 258 off_t off; 259 struct l_dirent linux_dirent; 260 struct l_dirent64 linux_dirent64; 261 int buflen, error, eofflag, nbytes, justone; 262 u_long *cookies = NULL, *cookiep; 263 int ncookies; 264 265 if ((error = getvnode(td->td_proc->p_fd, args->fd, &fp)) != 0) 266 return (error); 267 268 if ((fp->f_flag & FREAD) == 0) { 269 fdrop(fp, td); 270 return (EBADF); 271 } 272 273 vp = fp->f_data; 274 if (vp->v_type != VDIR) { 275 fdrop(fp, td); 276 return (EINVAL); 277 } 278 279 if ((error = VOP_GETATTR(vp, &va, td->td_ucred, td))) { 280 fdrop(fp, td); 281 return (error); 282 } 283 284 nbytes = args->count; 285 if (nbytes == 1) { 286 /* readdir(2) case. Always struct dirent. */ 287 if (is64bit) { 288 fdrop(fp, td); 289 return (EINVAL); 290 } 291 nbytes = sizeof(linux_dirent); 292 justone = 1; 293 } else 294 justone = 0; 295 296 off = fp->f_offset; 297 298 buflen = max(LINUX_DIRBLKSIZ, nbytes); 299 buflen = min(buflen, MAXBSIZE); 300 buf = malloc(buflen, M_TEMP, M_WAITOK); 301 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 302 303 again: 304 aiov.iov_base = buf; 305 aiov.iov_len = buflen; 306 auio.uio_iov = &aiov; 307 auio.uio_iovcnt = 1; 308 auio.uio_rw = UIO_READ; 309 auio.uio_segflg = UIO_SYSSPACE; 310 auio.uio_td = td; 311 auio.uio_resid = buflen; 312 auio.uio_offset = off; 313 314 if (cookies) { 315 free(cookies, M_TEMP); 316 cookies = NULL; 317 } 318 319 #ifdef MAC 320 /* 321 * Do directory search MAC check using non-cached credentials. 322 */ 323 if ((error = mac_check_vnode_readdir(td->td_proc->p_ucred, vp))) 324 goto out; 325 #endif /* MAC */ 326 if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, 327 &cookies))) 328 goto out; 329 330 inp = buf; 331 outp = (caddr_t)args->dirent; 332 resid = nbytes; 333 if ((len = buflen - auio.uio_resid) <= 0) 334 goto eof; 335 336 cookiep = cookies; 337 338 if (cookies) { 339 /* 340 * When using cookies, the vfs has the option of reading from 341 * a different offset than that supplied (UFS truncates the 342 * offset to a block boundary to make sure that it never reads 343 * partway through a directory entry, even if the directory 344 * has been compacted). 345 */ 346 while (len > 0 && ncookies > 0 && *cookiep <= off) { 347 bdp = (struct dirent *) inp; 348 len -= bdp->d_reclen; 349 inp += bdp->d_reclen; 350 cookiep++; 351 ncookies--; 352 } 353 } 354 355 while (len > 0) { 356 if (cookiep && ncookies == 0) 357 break; 358 bdp = (struct dirent *) inp; 359 reclen = bdp->d_reclen; 360 if (reclen & 3) { 361 error = EFAULT; 362 goto out; 363 } 364 365 if (bdp->d_fileno == 0) { 366 inp += reclen; 367 if (cookiep) { 368 off = *cookiep++; 369 ncookies--; 370 } else 371 off += reclen; 372 373 len -= reclen; 374 continue; 375 } 376 377 linuxreclen = (is64bit) 378 ? LINUX_RECLEN(&linux_dirent64, bdp->d_namlen) 379 : LINUX_RECLEN(&linux_dirent, bdp->d_namlen); 380 381 if (reclen > len || resid < linuxreclen) { 382 outp++; 383 break; 384 } 385 386 if (justone) { 387 /* readdir(2) case. */ 388 linux_dirent.d_ino = (l_long)bdp->d_fileno; 389 linux_dirent.d_off = (l_off_t)linuxreclen; 390 linux_dirent.d_reclen = (l_ushort)bdp->d_namlen; 391 strcpy(linux_dirent.d_name, bdp->d_name); 392 error = copyout(&linux_dirent, outp, linuxreclen); 393 } else { 394 if (is64bit) { 395 linux_dirent64.d_ino = bdp->d_fileno; 396 linux_dirent64.d_off = (cookiep) 397 ? (l_off_t)*cookiep 398 : (l_off_t)(off + reclen); 399 linux_dirent64.d_reclen = 400 (l_ushort)linuxreclen; 401 linux_dirent64.d_type = bdp->d_type; 402 strcpy(linux_dirent64.d_name, bdp->d_name); 403 error = copyout(&linux_dirent64, outp, 404 linuxreclen); 405 } else { 406 linux_dirent.d_ino = bdp->d_fileno; 407 linux_dirent.d_off = (cookiep) 408 ? (l_off_t)*cookiep 409 : (l_off_t)(off + reclen); 410 linux_dirent.d_reclen = (l_ushort)linuxreclen; 411 strcpy(linux_dirent.d_name, bdp->d_name); 412 error = copyout(&linux_dirent, outp, 413 linuxreclen); 414 } 415 } 416 if (error) 417 goto out; 418 419 inp += reclen; 420 if (cookiep) { 421 off = *cookiep++; 422 ncookies--; 423 } else 424 off += reclen; 425 426 outp += linuxreclen; 427 resid -= linuxreclen; 428 len -= reclen; 429 if (justone) 430 break; 431 } 432 433 if (outp == (caddr_t)args->dirent) 434 goto again; 435 436 fp->f_offset = off; 437 if (justone) 438 nbytes = resid + linuxreclen; 439 440 eof: 441 td->td_retval[0] = nbytes - resid; 442 443 out: 444 if (cookies) 445 free(cookies, M_TEMP); 446 447 VOP_UNLOCK(vp, 0, td); 448 fdrop(fp, td); 449 free(buf, M_TEMP); 450 return (error); 451 } 452 453 int 454 linux_getdents(struct thread *td, struct linux_getdents_args *args) 455 { 456 457 #ifdef DEBUG 458 if (ldebug(getdents)) 459 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count); 460 #endif 461 462 return (getdents_common(td, (struct linux_getdents64_args*)args, 0)); 463 } 464 465 int 466 linux_getdents64(struct thread *td, struct linux_getdents64_args *args) 467 { 468 469 #ifdef DEBUG 470 if (ldebug(getdents64)) 471 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count); 472 #endif 473 474 return (getdents_common(td, args, 1)); 475 } 476 477 /* 478 * These exist mainly for hooks for doing /compat/linux translation. 479 */ 480 481 int 482 linux_access(struct thread *td, struct linux_access_args *args) 483 { 484 char *path; 485 int error; 486 487 LCONVPATHEXIST(td, args->path, &path); 488 489 #ifdef DEBUG 490 if (ldebug(access)) 491 printf(ARGS(access, "%s, %d"), path, args->flags); 492 #endif 493 error = kern_access(td, path, UIO_SYSSPACE, args->flags); 494 LFREEPATH(path); 495 return (error); 496 } 497 498 int 499 linux_unlink(struct thread *td, struct linux_unlink_args *args) 500 { 501 char *path; 502 int error; 503 504 LCONVPATHEXIST(td, args->path, &path); 505 506 #ifdef DEBUG 507 if (ldebug(unlink)) 508 printf(ARGS(unlink, "%s"), path); 509 #endif 510 511 error = kern_unlink(td, path, UIO_SYSSPACE); 512 LFREEPATH(path); 513 return (error); 514 } 515 516 int 517 linux_chdir(struct thread *td, struct linux_chdir_args *args) 518 { 519 char *path; 520 int error; 521 522 LCONVPATHEXIST(td, args->path, &path); 523 524 #ifdef DEBUG 525 if (ldebug(chdir)) 526 printf(ARGS(chdir, "%s"), path); 527 #endif 528 error = kern_chdir(td, path, UIO_SYSSPACE); 529 LFREEPATH(path); 530 return (error); 531 } 532 533 int 534 linux_chmod(struct thread *td, struct linux_chmod_args *args) 535 { 536 char *path; 537 int error; 538 539 LCONVPATHEXIST(td, args->path, &path); 540 541 #ifdef DEBUG 542 if (ldebug(chmod)) 543 printf(ARGS(chmod, "%s, %d"), path, args->mode); 544 #endif 545 error = kern_chmod(td, path, UIO_SYSSPACE, args->mode); 546 LFREEPATH(path); 547 return (error); 548 } 549 550 int 551 linux_mkdir(struct thread *td, struct linux_mkdir_args *args) 552 { 553 char *path; 554 int error; 555 556 LCONVPATHCREAT(td, args->path, &path); 557 558 #ifdef DEBUG 559 if (ldebug(mkdir)) 560 printf(ARGS(mkdir, "%s, %d"), path, args->mode); 561 #endif 562 error = kern_mkdir(td, path, UIO_SYSSPACE, args->mode); 563 LFREEPATH(path); 564 return (error); 565 } 566 567 int 568 linux_rmdir(struct thread *td, struct linux_rmdir_args *args) 569 { 570 char *path; 571 int error; 572 573 LCONVPATHEXIST(td, args->path, &path); 574 575 #ifdef DEBUG 576 if (ldebug(rmdir)) 577 printf(ARGS(rmdir, "%s"), path); 578 #endif 579 error = kern_rmdir(td, path, UIO_SYSSPACE); 580 LFREEPATH(path); 581 return (error); 582 } 583 584 int 585 linux_rename(struct thread *td, struct linux_rename_args *args) 586 { 587 char *from, *to; 588 int error; 589 590 LCONVPATHEXIST(td, args->from, &from); 591 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 592 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1); 593 if (to == NULL) { 594 LFREEPATH(from); 595 return (error); 596 } 597 598 #ifdef DEBUG 599 if (ldebug(rename)) 600 printf(ARGS(rename, "%s, %s"), from, to); 601 #endif 602 error = kern_rename(td, from, to, UIO_SYSSPACE); 603 LFREEPATH(from); 604 LFREEPATH(to); 605 return (error); 606 } 607 608 int 609 linux_symlink(struct thread *td, struct linux_symlink_args *args) 610 { 611 char *path, *to; 612 int error; 613 614 LCONVPATHEXIST(td, args->path, &path); 615 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 616 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1); 617 if (to == NULL) { 618 LFREEPATH(path); 619 return (error); 620 } 621 622 #ifdef DEBUG 623 if (ldebug(symlink)) 624 printf(ARGS(symlink, "%s, %s"), path, to); 625 #endif 626 error = kern_symlink(td, path, to, UIO_SYSSPACE); 627 LFREEPATH(path); 628 LFREEPATH(to); 629 return (error); 630 } 631 632 int 633 linux_readlink(struct thread *td, struct linux_readlink_args *args) 634 { 635 char *name; 636 int error; 637 638 LCONVPATHEXIST(td, args->name, &name); 639 640 #ifdef DEBUG 641 if (ldebug(readlink)) 642 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf, 643 args->count); 644 #endif 645 error = kern_readlink(td, name, UIO_SYSSPACE, args->buf, UIO_USERSPACE, 646 args->count); 647 LFREEPATH(name); 648 return (error); 649 } 650 651 int 652 linux_truncate(struct thread *td, struct linux_truncate_args *args) 653 { 654 char *path; 655 int error; 656 657 LCONVPATHEXIST(td, args->path, &path); 658 659 #ifdef DEBUG 660 if (ldebug(truncate)) 661 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length); 662 #endif 663 664 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 665 LFREEPATH(path); 666 return (error); 667 } 668 669 int 670 linux_link(struct thread *td, struct linux_link_args *args) 671 { 672 char *path, *to; 673 int error; 674 675 LCONVPATHEXIST(td, args->path, &path); 676 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 677 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1); 678 if (to == NULL) { 679 LFREEPATH(path); 680 return (error); 681 } 682 683 #ifdef DEBUG 684 if (ldebug(link)) 685 printf(ARGS(link, "%s, %s"), path, to); 686 #endif 687 error = kern_link(td, path, to, UIO_SYSSPACE); 688 LFREEPATH(path); 689 LFREEPATH(to); 690 return (error); 691 } 692 693 #ifndef __alpha__ 694 int 695 linux_fdatasync(td, uap) 696 struct thread *td; 697 struct linux_fdatasync_args *uap; 698 { 699 struct fsync_args bsd; 700 701 bsd.fd = uap->fd; 702 return fsync(td, &bsd); 703 } 704 #endif /*!__alpha__*/ 705 706 int 707 linux_pread(td, uap) 708 struct thread *td; 709 struct linux_pread_args *uap; 710 { 711 struct pread_args bsd; 712 713 bsd.fd = uap->fd; 714 bsd.buf = uap->buf; 715 bsd.nbyte = uap->nbyte; 716 bsd.offset = uap->offset; 717 return pread(td, &bsd); 718 } 719 720 int 721 linux_pwrite(td, uap) 722 struct thread *td; 723 struct linux_pwrite_args *uap; 724 { 725 struct pwrite_args bsd; 726 727 bsd.fd = uap->fd; 728 bsd.buf = uap->buf; 729 bsd.nbyte = uap->nbyte; 730 bsd.offset = uap->offset; 731 return pwrite(td, &bsd); 732 } 733 734 int 735 linux_mount(struct thread *td, struct linux_mount_args *args) 736 { 737 struct ufs_args ufs; 738 char fstypename[MFSNAMELEN]; 739 char mntonname[MNAMELEN], mntfromname[MNAMELEN]; 740 int error; 741 int fsflags; 742 const char *fstype; 743 void *fsdata; 744 745 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1, 746 NULL); 747 if (error) 748 return (error); 749 error = copyinstr(args->specialfile, mntfromname, MFSNAMELEN - 1, NULL); 750 if (error) 751 return (error); 752 error = copyinstr(args->dir, mntonname, MFSNAMELEN - 1, NULL); 753 if (error) 754 return (error); 755 756 #ifdef DEBUG 757 if (ldebug(mount)) 758 printf(ARGS(mount, "%s, %s, %s"), 759 fstypename, mntfromname, mntonname); 760 #endif 761 762 if (strcmp(fstypename, "ext2") == 0) { 763 fstype = "ext2fs"; 764 fsdata = &ufs; 765 ufs.fspec = mntfromname; 766 #define DEFAULT_ROOTID -2 767 ufs.export.ex_root = DEFAULT_ROOTID; 768 ufs.export.ex_flags = 769 args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0; 770 } else if (strcmp(fstypename, "proc") == 0) { 771 fstype = "linprocfs"; 772 fsdata = NULL; 773 } else { 774 return (ENODEV); 775 } 776 777 fsflags = 0; 778 779 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) { 780 /* 781 * Linux SYNC flag is not included; the closest equivalent 782 * FreeBSD has is !ASYNC, which is our default. 783 */ 784 if (args->rwflag & LINUX_MS_RDONLY) 785 fsflags |= MNT_RDONLY; 786 if (args->rwflag & LINUX_MS_NOSUID) 787 fsflags |= MNT_NOSUID; 788 if (args->rwflag & LINUX_MS_NODEV) 789 fsflags |= MNT_NODEV; 790 if (args->rwflag & LINUX_MS_NOEXEC) 791 fsflags |= MNT_NOEXEC; 792 if (args->rwflag & LINUX_MS_REMOUNT) 793 fsflags |= MNT_UPDATE; 794 } 795 796 return (vfs_mount(td, fstype, mntonname, fsflags, fsdata)); 797 } 798 799 int 800 linux_oldumount(struct thread *td, struct linux_oldumount_args *args) 801 { 802 struct linux_umount_args args2; 803 804 args2.path = args->path; 805 args2.flags = 0; 806 return (linux_umount(td, &args2)); 807 } 808 809 int 810 linux_umount(struct thread *td, struct linux_umount_args *args) 811 { 812 struct unmount_args bsd; 813 814 bsd.path = args->path; 815 bsd.flags = args->flags; /* XXX correct? */ 816 return (unmount(td, &bsd)); 817 } 818 819 /* 820 * fcntl family of syscalls 821 */ 822 823 struct l_flock { 824 l_short l_type; 825 l_short l_whence; 826 l_off_t l_start; 827 l_off_t l_len; 828 l_pid_t l_pid; 829 }; 830 831 static void 832 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock) 833 { 834 switch (linux_flock->l_type) { 835 case LINUX_F_RDLCK: 836 bsd_flock->l_type = F_RDLCK; 837 break; 838 case LINUX_F_WRLCK: 839 bsd_flock->l_type = F_WRLCK; 840 break; 841 case LINUX_F_UNLCK: 842 bsd_flock->l_type = F_UNLCK; 843 break; 844 default: 845 bsd_flock->l_type = -1; 846 break; 847 } 848 bsd_flock->l_whence = linux_flock->l_whence; 849 bsd_flock->l_start = (off_t)linux_flock->l_start; 850 bsd_flock->l_len = (off_t)linux_flock->l_len; 851 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 852 } 853 854 static void 855 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock) 856 { 857 switch (bsd_flock->l_type) { 858 case F_RDLCK: 859 linux_flock->l_type = LINUX_F_RDLCK; 860 break; 861 case F_WRLCK: 862 linux_flock->l_type = LINUX_F_WRLCK; 863 break; 864 case F_UNLCK: 865 linux_flock->l_type = LINUX_F_UNLCK; 866 break; 867 } 868 linux_flock->l_whence = bsd_flock->l_whence; 869 linux_flock->l_start = (l_off_t)bsd_flock->l_start; 870 linux_flock->l_len = (l_off_t)bsd_flock->l_len; 871 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 872 } 873 874 #if defined(__i386__) 875 struct l_flock64 { 876 l_short l_type; 877 l_short l_whence; 878 l_loff_t l_start; 879 l_loff_t l_len; 880 l_pid_t l_pid; 881 }; 882 883 static void 884 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock) 885 { 886 switch (linux_flock->l_type) { 887 case LINUX_F_RDLCK: 888 bsd_flock->l_type = F_RDLCK; 889 break; 890 case LINUX_F_WRLCK: 891 bsd_flock->l_type = F_WRLCK; 892 break; 893 case LINUX_F_UNLCK: 894 bsd_flock->l_type = F_UNLCK; 895 break; 896 default: 897 bsd_flock->l_type = -1; 898 break; 899 } 900 bsd_flock->l_whence = linux_flock->l_whence; 901 bsd_flock->l_start = (off_t)linux_flock->l_start; 902 bsd_flock->l_len = (off_t)linux_flock->l_len; 903 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 904 } 905 906 static void 907 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock) 908 { 909 switch (bsd_flock->l_type) { 910 case F_RDLCK: 911 linux_flock->l_type = LINUX_F_RDLCK; 912 break; 913 case F_WRLCK: 914 linux_flock->l_type = LINUX_F_WRLCK; 915 break; 916 case F_UNLCK: 917 linux_flock->l_type = LINUX_F_UNLCK; 918 break; 919 } 920 linux_flock->l_whence = bsd_flock->l_whence; 921 linux_flock->l_start = (l_loff_t)bsd_flock->l_start; 922 linux_flock->l_len = (l_loff_t)bsd_flock->l_len; 923 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 924 } 925 #endif /* __i386__ */ 926 927 #if defined(__alpha__) 928 #define linux_fcntl64_args linux_fcntl_args 929 #endif 930 931 static int 932 fcntl_common(struct thread *td, struct linux_fcntl64_args *args) 933 { 934 struct l_flock linux_flock; 935 struct flock bsd_flock; 936 struct file *fp; 937 long arg; 938 int error, result; 939 940 switch (args->cmd) { 941 case LINUX_F_DUPFD: 942 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg)); 943 944 case LINUX_F_GETFD: 945 return (kern_fcntl(td, args->fd, F_GETFD, 0)); 946 947 case LINUX_F_SETFD: 948 return (kern_fcntl(td, args->fd, F_SETFD, args->arg)); 949 950 case LINUX_F_GETFL: 951 error = kern_fcntl(td, args->fd, F_GETFL, 0); 952 result = td->td_retval[0]; 953 td->td_retval[0] = 0; 954 if (result & O_RDONLY) 955 td->td_retval[0] |= LINUX_O_RDONLY; 956 if (result & O_WRONLY) 957 td->td_retval[0] |= LINUX_O_WRONLY; 958 if (result & O_RDWR) 959 td->td_retval[0] |= LINUX_O_RDWR; 960 if (result & O_NDELAY) 961 td->td_retval[0] |= LINUX_O_NONBLOCK; 962 if (result & O_APPEND) 963 td->td_retval[0] |= LINUX_O_APPEND; 964 if (result & O_FSYNC) 965 td->td_retval[0] |= LINUX_O_SYNC; 966 if (result & O_ASYNC) 967 td->td_retval[0] |= LINUX_FASYNC; 968 return (error); 969 970 case LINUX_F_SETFL: 971 arg = 0; 972 if (args->arg & LINUX_O_NDELAY) 973 arg |= O_NONBLOCK; 974 if (args->arg & LINUX_O_APPEND) 975 arg |= O_APPEND; 976 if (args->arg & LINUX_O_SYNC) 977 arg |= O_FSYNC; 978 if (args->arg & LINUX_FASYNC) 979 arg |= O_ASYNC; 980 return (kern_fcntl(td, args->fd, F_SETFL, arg)); 981 982 case LINUX_F_GETLK: 983 error = copyin((void *)args->arg, &linux_flock, 984 sizeof(linux_flock)); 985 if (error) 986 return (error); 987 linux_to_bsd_flock(&linux_flock, &bsd_flock); 988 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 989 if (error) 990 return (error); 991 bsd_to_linux_flock(&bsd_flock, &linux_flock); 992 return (copyout(&linux_flock, (void *)args->arg, 993 sizeof(linux_flock))); 994 995 case LINUX_F_SETLK: 996 error = copyin((void *)args->arg, &linux_flock, 997 sizeof(linux_flock)); 998 if (error) 999 return (error); 1000 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1001 return (kern_fcntl(td, args->fd, F_SETLK, 1002 (intptr_t)&bsd_flock)); 1003 1004 case LINUX_F_SETLKW: 1005 error = copyin((void *)args->arg, &linux_flock, 1006 sizeof(linux_flock)); 1007 if (error) 1008 return (error); 1009 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1010 return (kern_fcntl(td, args->fd, F_SETLKW, 1011 (intptr_t)&bsd_flock)); 1012 1013 case LINUX_F_GETOWN: 1014 return (kern_fcntl(td, args->fd, F_GETOWN, 0)); 1015 1016 case LINUX_F_SETOWN: 1017 /* 1018 * XXX some Linux applications depend on F_SETOWN having no 1019 * significant effect for pipes (SIGIO is not delivered for 1020 * pipes under Linux-2.2.35 at least). 1021 */ 1022 error = fget(td, args->fd, &fp); 1023 if (error) 1024 return (error); 1025 if (fp->f_type == DTYPE_PIPE) { 1026 fdrop(fp, td); 1027 return (EINVAL); 1028 } 1029 fdrop(fp, td); 1030 1031 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg)); 1032 } 1033 1034 return (EINVAL); 1035 } 1036 1037 int 1038 linux_fcntl(struct thread *td, struct linux_fcntl_args *args) 1039 { 1040 struct linux_fcntl64_args args64; 1041 1042 #ifdef DEBUG 1043 if (ldebug(fcntl)) 1044 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd); 1045 #endif 1046 1047 args64.fd = args->fd; 1048 args64.cmd = args->cmd; 1049 args64.arg = args->arg; 1050 return (fcntl_common(td, &args64)); 1051 } 1052 1053 #if defined(__i386__) 1054 int 1055 linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args) 1056 { 1057 struct l_flock64 linux_flock; 1058 struct flock bsd_flock; 1059 int error; 1060 1061 #ifdef DEBUG 1062 if (ldebug(fcntl64)) 1063 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd); 1064 #endif 1065 1066 switch (args->cmd) { 1067 case LINUX_F_GETLK64: 1068 error = copyin((void *)args->arg, &linux_flock, 1069 sizeof(linux_flock)); 1070 if (error) 1071 return (error); 1072 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1073 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1074 if (error) 1075 return (error); 1076 bsd_to_linux_flock64(&bsd_flock, &linux_flock); 1077 return (copyout(&linux_flock, (void *)args->arg, 1078 sizeof(linux_flock))); 1079 1080 case LINUX_F_SETLK64: 1081 error = copyin((void *)args->arg, &linux_flock, 1082 sizeof(linux_flock)); 1083 if (error) 1084 return (error); 1085 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1086 return (kern_fcntl(td, args->fd, F_SETLK, 1087 (intptr_t)&bsd_flock)); 1088 1089 case LINUX_F_SETLKW64: 1090 error = copyin((void *)args->arg, &linux_flock, 1091 sizeof(linux_flock)); 1092 if (error) 1093 return (error); 1094 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1095 return (kern_fcntl(td, args->fd, F_SETLKW, 1096 (intptr_t)&bsd_flock)); 1097 } 1098 1099 return (fcntl_common(td, args)); 1100 } 1101 #endif /* __i386__ */ 1102 1103 int 1104 linux_chown(struct thread *td, struct linux_chown_args *args) 1105 { 1106 char *path; 1107 int error; 1108 1109 LCONVPATHEXIST(td, args->path, &path); 1110 1111 #ifdef DEBUG 1112 if (ldebug(chown)) 1113 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid); 1114 #endif 1115 error = kern_chown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1116 LFREEPATH(path); 1117 return (error); 1118 } 1119 1120 int 1121 linux_lchown(struct thread *td, struct linux_lchown_args *args) 1122 { 1123 char *path; 1124 int error; 1125 1126 LCONVPATHEXIST(td, args->path, &path); 1127 1128 #ifdef DEBUG 1129 if (ldebug(lchown)) 1130 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid); 1131 #endif 1132 error = kern_lchown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1133 LFREEPATH(path); 1134 return (error); 1135 } 1136