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 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include "opt_compat.h" 33 #include "opt_mac.h" 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/conf.h> 38 #include <sys/dirent.h> 39 #include <sys/fcntl.h> 40 #include <sys/file.h> 41 #include <sys/filedesc.h> 42 #include <sys/lock.h> 43 #include <sys/mac.h> 44 #include <sys/malloc.h> 45 #include <sys/mount.h> 46 #include <sys/mutex.h> 47 #include <sys/proc.h> 48 #include <sys/syscallsubr.h> 49 #include <sys/sysproto.h> 50 #include <sys/tty.h> 51 #include <sys/vnode.h> 52 53 #include <ufs/ufs/extattr.h> 54 #include <ufs/ufs/quota.h> 55 #include <ufs/ufs/ufsmount.h> 56 57 #ifdef COMPAT_LINUX32 58 #include <machine/../linux32/linux.h> 59 #include <machine/../linux32/linux32_proto.h> 60 #else 61 #include <machine/../linux/linux.h> 62 #include <machine/../linux/linux_proto.h> 63 #endif 64 #include <compat/linux/linux_util.h> 65 66 int 67 linux_creat(struct thread *td, struct linux_creat_args *args) 68 { 69 char *path; 70 int error; 71 72 LCONVPATHEXIST(td, args->path, &path); 73 74 #ifdef DEBUG 75 if (ldebug(creat)) 76 printf(ARGS(creat, "%s, %d"), path, args->mode); 77 #endif 78 error = kern_open(td, path, UIO_SYSSPACE, O_WRONLY | O_CREAT | O_TRUNC, 79 args->mode); 80 LFREEPATH(path); 81 return (error); 82 } 83 84 int 85 linux_open(struct thread *td, struct linux_open_args *args) 86 { 87 struct proc *p = td->td_proc; 88 char *path; 89 int bsd_flags, error; 90 91 if (args->flags & LINUX_O_CREAT) 92 LCONVPATHCREAT(td, args->path, &path); 93 else 94 LCONVPATHEXIST(td, args->path, &path); 95 96 #ifdef DEBUG 97 if (ldebug(open)) 98 printf(ARGS(open, "%s, 0x%x, 0x%x"), 99 path, args->flags, args->mode); 100 #endif 101 bsd_flags = 0; 102 if (args->flags & LINUX_O_RDONLY) 103 bsd_flags |= O_RDONLY; 104 if (args->flags & LINUX_O_WRONLY) 105 bsd_flags |= O_WRONLY; 106 if (args->flags & LINUX_O_RDWR) 107 bsd_flags |= O_RDWR; 108 if (args->flags & LINUX_O_NDELAY) 109 bsd_flags |= O_NONBLOCK; 110 if (args->flags & LINUX_O_APPEND) 111 bsd_flags |= O_APPEND; 112 if (args->flags & LINUX_O_SYNC) 113 bsd_flags |= O_FSYNC; 114 if (args->flags & LINUX_O_NONBLOCK) 115 bsd_flags |= O_NONBLOCK; 116 if (args->flags & LINUX_FASYNC) 117 bsd_flags |= O_ASYNC; 118 if (args->flags & LINUX_O_CREAT) 119 bsd_flags |= O_CREAT; 120 if (args->flags & LINUX_O_TRUNC) 121 bsd_flags |= O_TRUNC; 122 if (args->flags & LINUX_O_EXCL) 123 bsd_flags |= O_EXCL; 124 if (args->flags & LINUX_O_NOCTTY) 125 bsd_flags |= O_NOCTTY; 126 127 error = kern_open(td, path, UIO_SYSSPACE, bsd_flags, args->mode); 128 PROC_LOCK(p); 129 if (!error && !(bsd_flags & O_NOCTTY) && 130 SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 131 struct file *fp; 132 133 PROC_UNLOCK(p); 134 error = fget(td, td->td_retval[0], &fp); 135 if (!error) { 136 if (fp->f_type == DTYPE_VNODE) 137 fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, td->td_ucred, 138 td); 139 fdrop(fp, td); 140 } 141 } else { 142 PROC_UNLOCK(p); 143 #ifdef DEBUG 144 if (ldebug(open)) 145 printf(LMSG("open returns error %d"), error); 146 #endif 147 } 148 LFREEPATH(path); 149 return error; 150 } 151 152 int 153 linux_lseek(struct thread *td, struct linux_lseek_args *args) 154 { 155 156 struct lseek_args /* { 157 int fd; 158 int pad; 159 off_t offset; 160 int whence; 161 } */ tmp_args; 162 int error; 163 164 #ifdef DEBUG 165 if (ldebug(lseek)) 166 printf(ARGS(lseek, "%d, %ld, %d"), 167 args->fdes, (long)args->off, args->whence); 168 #endif 169 tmp_args.fd = args->fdes; 170 tmp_args.offset = (off_t)args->off; 171 tmp_args.whence = args->whence; 172 error = lseek(td, &tmp_args); 173 return error; 174 } 175 176 int 177 linux_llseek(struct thread *td, struct linux_llseek_args *args) 178 { 179 struct lseek_args bsd_args; 180 int error; 181 off_t off; 182 183 #ifdef DEBUG 184 if (ldebug(llseek)) 185 printf(ARGS(llseek, "%d, %d:%d, %d"), 186 args->fd, args->ohigh, args->olow, args->whence); 187 #endif 188 off = (args->olow) | (((off_t) args->ohigh) << 32); 189 190 bsd_args.fd = args->fd; 191 bsd_args.offset = off; 192 bsd_args.whence = args->whence; 193 194 if ((error = lseek(td, &bsd_args))) 195 return error; 196 197 if ((error = copyout(td->td_retval, args->res, sizeof (off_t)))) 198 return error; 199 200 td->td_retval[0] = 0; 201 return 0; 202 } 203 204 int 205 linux_readdir(struct thread *td, struct linux_readdir_args *args) 206 { 207 struct linux_getdents_args lda; 208 209 lda.fd = args->fd; 210 lda.dent = args->dent; 211 lda.count = 1; 212 return linux_getdents(td, &lda); 213 } 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 off_t off; 258 struct l_dirent linux_dirent; 259 struct l_dirent64 linux_dirent64; 260 int buflen, error, eofflag, nbytes, justone; 261 u_long *cookies = NULL, *cookiep; 262 int ncookies; 263 264 if ((error = getvnode(td->td_proc->p_fd, args->fd, &fp)) != 0) 265 return (error); 266 267 if ((fp->f_flag & FREAD) == 0) { 268 fdrop(fp, td); 269 return (EBADF); 270 } 271 272 vp = fp->f_vnode; 273 if (vp->v_type != VDIR) { 274 fdrop(fp, td); 275 return (EINVAL); 276 } 277 278 nbytes = args->count; 279 if (nbytes == 1) { 280 /* readdir(2) case. Always struct dirent. */ 281 if (is64bit) { 282 fdrop(fp, td); 283 return (EINVAL); 284 } 285 nbytes = sizeof(linux_dirent); 286 justone = 1; 287 } else 288 justone = 0; 289 290 off = fp->f_offset; 291 292 buflen = max(LINUX_DIRBLKSIZ, nbytes); 293 buflen = min(buflen, MAXBSIZE); 294 buf = malloc(buflen, M_TEMP, M_WAITOK); 295 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 296 297 again: 298 aiov.iov_base = buf; 299 aiov.iov_len = buflen; 300 auio.uio_iov = &aiov; 301 auio.uio_iovcnt = 1; 302 auio.uio_rw = UIO_READ; 303 auio.uio_segflg = UIO_SYSSPACE; 304 auio.uio_td = td; 305 auio.uio_resid = buflen; 306 auio.uio_offset = off; 307 308 if (cookies) { 309 free(cookies, M_TEMP); 310 cookies = NULL; 311 } 312 313 #ifdef MAC 314 /* 315 * Do directory search MAC check using non-cached credentials. 316 */ 317 if ((error = mac_check_vnode_readdir(td->td_ucred, vp))) 318 goto out; 319 #endif /* MAC */ 320 if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, 321 &cookies))) 322 goto out; 323 324 inp = buf; 325 outp = (caddr_t)args->dirent; 326 resid = nbytes; 327 if ((len = buflen - auio.uio_resid) <= 0) 328 goto eof; 329 330 cookiep = cookies; 331 332 if (cookies) { 333 /* 334 * When using cookies, the vfs has the option of reading from 335 * a different offset than that supplied (UFS truncates the 336 * offset to a block boundary to make sure that it never reads 337 * partway through a directory entry, even if the directory 338 * has been compacted). 339 */ 340 while (len > 0 && ncookies > 0 && *cookiep <= off) { 341 bdp = (struct dirent *) inp; 342 len -= bdp->d_reclen; 343 inp += bdp->d_reclen; 344 cookiep++; 345 ncookies--; 346 } 347 } 348 349 while (len > 0) { 350 if (cookiep && ncookies == 0) 351 break; 352 bdp = (struct dirent *) inp; 353 reclen = bdp->d_reclen; 354 if (reclen & 3) { 355 error = EFAULT; 356 goto out; 357 } 358 359 if (bdp->d_fileno == 0) { 360 inp += reclen; 361 if (cookiep) { 362 off = *cookiep++; 363 ncookies--; 364 } else 365 off += reclen; 366 367 len -= reclen; 368 continue; 369 } 370 371 linuxreclen = (is64bit) 372 ? LINUX_RECLEN(&linux_dirent64, bdp->d_namlen) 373 : LINUX_RECLEN(&linux_dirent, bdp->d_namlen); 374 375 if (reclen > len || resid < linuxreclen) { 376 outp++; 377 break; 378 } 379 380 if (justone) { 381 /* readdir(2) case. */ 382 linux_dirent.d_ino = (l_long)bdp->d_fileno; 383 linux_dirent.d_off = (l_off_t)linuxreclen; 384 linux_dirent.d_reclen = (l_ushort)bdp->d_namlen; 385 strcpy(linux_dirent.d_name, bdp->d_name); 386 error = copyout(&linux_dirent, outp, linuxreclen); 387 } else { 388 if (is64bit) { 389 linux_dirent64.d_ino = bdp->d_fileno; 390 linux_dirent64.d_off = (cookiep) 391 ? (l_off_t)*cookiep 392 : (l_off_t)(off + reclen); 393 linux_dirent64.d_reclen = 394 (l_ushort)linuxreclen; 395 linux_dirent64.d_type = bdp->d_type; 396 strcpy(linux_dirent64.d_name, bdp->d_name); 397 error = copyout(&linux_dirent64, outp, 398 linuxreclen); 399 } else { 400 linux_dirent.d_ino = bdp->d_fileno; 401 linux_dirent.d_off = (cookiep) 402 ? (l_off_t)*cookiep 403 : (l_off_t)(off + reclen); 404 linux_dirent.d_reclen = (l_ushort)linuxreclen; 405 strcpy(linux_dirent.d_name, bdp->d_name); 406 error = copyout(&linux_dirent, outp, 407 linuxreclen); 408 } 409 } 410 if (error) 411 goto out; 412 413 inp += reclen; 414 if (cookiep) { 415 off = *cookiep++; 416 ncookies--; 417 } else 418 off += reclen; 419 420 outp += linuxreclen; 421 resid -= linuxreclen; 422 len -= reclen; 423 if (justone) 424 break; 425 } 426 427 if (outp == (caddr_t)args->dirent) 428 goto again; 429 430 fp->f_offset = off; 431 if (justone) 432 nbytes = resid + linuxreclen; 433 434 eof: 435 td->td_retval[0] = nbytes - resid; 436 437 out: 438 if (cookies) 439 free(cookies, M_TEMP); 440 441 VOP_UNLOCK(vp, 0, td); 442 fdrop(fp, td); 443 free(buf, M_TEMP); 444 return (error); 445 } 446 447 int 448 linux_getdents(struct thread *td, struct linux_getdents_args *args) 449 { 450 451 #ifdef DEBUG 452 if (ldebug(getdents)) 453 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count); 454 #endif 455 456 return (getdents_common(td, (struct linux_getdents64_args*)args, 0)); 457 } 458 459 int 460 linux_getdents64(struct thread *td, struct linux_getdents64_args *args) 461 { 462 463 #ifdef DEBUG 464 if (ldebug(getdents64)) 465 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count); 466 #endif 467 468 return (getdents_common(td, args, 1)); 469 } 470 471 /* 472 * These exist mainly for hooks for doing /compat/linux translation. 473 */ 474 475 int 476 linux_access(struct thread *td, struct linux_access_args *args) 477 { 478 char *path; 479 int error; 480 481 LCONVPATHEXIST(td, args->path, &path); 482 483 #ifdef DEBUG 484 if (ldebug(access)) 485 printf(ARGS(access, "%s, %d"), path, args->flags); 486 #endif 487 error = kern_access(td, path, UIO_SYSSPACE, args->flags); 488 LFREEPATH(path); 489 return (error); 490 } 491 492 int 493 linux_unlink(struct thread *td, struct linux_unlink_args *args) 494 { 495 char *path; 496 int error; 497 498 LCONVPATHEXIST(td, args->path, &path); 499 500 #ifdef DEBUG 501 if (ldebug(unlink)) 502 printf(ARGS(unlink, "%s"), path); 503 #endif 504 505 error = kern_unlink(td, path, UIO_SYSSPACE); 506 LFREEPATH(path); 507 return (error); 508 } 509 510 int 511 linux_chdir(struct thread *td, struct linux_chdir_args *args) 512 { 513 char *path; 514 int error; 515 516 LCONVPATHEXIST(td, args->path, &path); 517 518 #ifdef DEBUG 519 if (ldebug(chdir)) 520 printf(ARGS(chdir, "%s"), path); 521 #endif 522 error = kern_chdir(td, path, UIO_SYSSPACE); 523 LFREEPATH(path); 524 return (error); 525 } 526 527 int 528 linux_chmod(struct thread *td, struct linux_chmod_args *args) 529 { 530 char *path; 531 int error; 532 533 LCONVPATHEXIST(td, args->path, &path); 534 535 #ifdef DEBUG 536 if (ldebug(chmod)) 537 printf(ARGS(chmod, "%s, %d"), path, args->mode); 538 #endif 539 error = kern_chmod(td, path, UIO_SYSSPACE, args->mode); 540 LFREEPATH(path); 541 return (error); 542 } 543 544 int 545 linux_mkdir(struct thread *td, struct linux_mkdir_args *args) 546 { 547 char *path; 548 int error; 549 550 LCONVPATHCREAT(td, args->path, &path); 551 552 #ifdef DEBUG 553 if (ldebug(mkdir)) 554 printf(ARGS(mkdir, "%s, %d"), path, args->mode); 555 #endif 556 error = kern_mkdir(td, path, UIO_SYSSPACE, args->mode); 557 LFREEPATH(path); 558 return (error); 559 } 560 561 int 562 linux_rmdir(struct thread *td, struct linux_rmdir_args *args) 563 { 564 char *path; 565 int error; 566 567 LCONVPATHEXIST(td, args->path, &path); 568 569 #ifdef DEBUG 570 if (ldebug(rmdir)) 571 printf(ARGS(rmdir, "%s"), path); 572 #endif 573 error = kern_rmdir(td, path, UIO_SYSSPACE); 574 LFREEPATH(path); 575 return (error); 576 } 577 578 int 579 linux_rename(struct thread *td, struct linux_rename_args *args) 580 { 581 char *from, *to; 582 int error; 583 584 LCONVPATHEXIST(td, args->from, &from); 585 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 586 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1); 587 if (to == NULL) { 588 LFREEPATH(from); 589 return (error); 590 } 591 592 #ifdef DEBUG 593 if (ldebug(rename)) 594 printf(ARGS(rename, "%s, %s"), from, to); 595 #endif 596 error = kern_rename(td, from, to, UIO_SYSSPACE); 597 LFREEPATH(from); 598 LFREEPATH(to); 599 return (error); 600 } 601 602 int 603 linux_symlink(struct thread *td, struct linux_symlink_args *args) 604 { 605 char *path, *to; 606 int error; 607 608 LCONVPATHEXIST(td, args->path, &path); 609 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 610 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1); 611 if (to == NULL) { 612 LFREEPATH(path); 613 return (error); 614 } 615 616 #ifdef DEBUG 617 if (ldebug(symlink)) 618 printf(ARGS(symlink, "%s, %s"), path, to); 619 #endif 620 error = kern_symlink(td, path, to, UIO_SYSSPACE); 621 LFREEPATH(path); 622 LFREEPATH(to); 623 return (error); 624 } 625 626 int 627 linux_readlink(struct thread *td, struct linux_readlink_args *args) 628 { 629 char *name; 630 int error; 631 632 LCONVPATHEXIST(td, args->name, &name); 633 634 #ifdef DEBUG 635 if (ldebug(readlink)) 636 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf, 637 args->count); 638 #endif 639 error = kern_readlink(td, name, UIO_SYSSPACE, args->buf, UIO_USERSPACE, 640 args->count); 641 LFREEPATH(name); 642 return (error); 643 } 644 645 int 646 linux_truncate(struct thread *td, struct linux_truncate_args *args) 647 { 648 char *path; 649 int error; 650 651 LCONVPATHEXIST(td, args->path, &path); 652 653 #ifdef DEBUG 654 if (ldebug(truncate)) 655 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length); 656 #endif 657 658 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 659 LFREEPATH(path); 660 return (error); 661 } 662 663 int 664 linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args) 665 { 666 struct ftruncate_args /* { 667 int fd; 668 int pad; 669 off_t length; 670 } */ nuap; 671 672 nuap.fd = args->fd; 673 nuap.pad = 0; 674 nuap.length = args->length; 675 return (ftruncate(td, &nuap)); 676 } 677 678 int 679 linux_link(struct thread *td, struct linux_link_args *args) 680 { 681 char *path, *to; 682 int error; 683 684 LCONVPATHEXIST(td, args->path, &path); 685 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 686 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1); 687 if (to == NULL) { 688 LFREEPATH(path); 689 return (error); 690 } 691 692 #ifdef DEBUG 693 if (ldebug(link)) 694 printf(ARGS(link, "%s, %s"), path, to); 695 #endif 696 error = kern_link(td, path, to, UIO_SYSSPACE); 697 LFREEPATH(path); 698 LFREEPATH(to); 699 return (error); 700 } 701 702 int 703 linux_fdatasync(td, uap) 704 struct thread *td; 705 struct linux_fdatasync_args *uap; 706 { 707 struct fsync_args bsd; 708 709 bsd.fd = uap->fd; 710 return fsync(td, &bsd); 711 } 712 713 int 714 linux_pread(td, uap) 715 struct thread *td; 716 struct linux_pread_args *uap; 717 { 718 struct pread_args bsd; 719 720 bsd.fd = uap->fd; 721 bsd.buf = uap->buf; 722 bsd.nbyte = uap->nbyte; 723 bsd.offset = uap->offset; 724 return pread(td, &bsd); 725 } 726 727 int 728 linux_pwrite(td, uap) 729 struct thread *td; 730 struct linux_pwrite_args *uap; 731 { 732 struct pwrite_args bsd; 733 734 bsd.fd = uap->fd; 735 bsd.buf = uap->buf; 736 bsd.nbyte = uap->nbyte; 737 bsd.offset = uap->offset; 738 return pwrite(td, &bsd); 739 } 740 741 int 742 linux_mount(struct thread *td, struct linux_mount_args *args) 743 { 744 struct ufs_args ufs; 745 char fstypename[MFSNAMELEN]; 746 char mntonname[MNAMELEN], mntfromname[MNAMELEN]; 747 int error; 748 int fsflags; 749 void *fsdata; 750 751 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1, 752 NULL); 753 if (error) 754 return (error); 755 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL); 756 if (error) 757 return (error); 758 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL); 759 if (error) 760 return (error); 761 762 #ifdef DEBUG 763 if (ldebug(mount)) 764 printf(ARGS(mount, "%s, %s, %s"), 765 fstypename, mntfromname, mntonname); 766 #endif 767 768 if (strcmp(fstypename, "ext2") == 0) { 769 strcpy(fstypename, "ext2fs"); 770 fsdata = &ufs; 771 ufs.fspec = mntfromname; 772 #define DEFAULT_ROOTID -2 773 ufs.export.ex_root = DEFAULT_ROOTID; 774 ufs.export.ex_flags = 775 args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0; 776 } else if (strcmp(fstypename, "proc") == 0) { 777 strcpy(fstypename, "linprocfs"); 778 fsdata = NULL; 779 } else { 780 return (ENODEV); 781 } 782 783 fsflags = 0; 784 785 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) { 786 /* 787 * Linux SYNC flag is not included; the closest equivalent 788 * FreeBSD has is !ASYNC, which is our default. 789 */ 790 if (args->rwflag & LINUX_MS_RDONLY) 791 fsflags |= MNT_RDONLY; 792 if (args->rwflag & LINUX_MS_NOSUID) 793 fsflags |= MNT_NOSUID; 794 if (args->rwflag & LINUX_MS_NOEXEC) 795 fsflags |= MNT_NOEXEC; 796 if (args->rwflag & LINUX_MS_REMOUNT) 797 fsflags |= MNT_UPDATE; 798 } 799 800 if (strcmp(fstypename, "linprocfs") == 0) { 801 error = kernel_vmount(fsflags, 802 "fstype", fstypename, 803 "fspath", mntonname, 804 NULL); 805 } else 806 error = EOPNOTSUPP; 807 return (error); 808 } 809 810 int 811 linux_oldumount(struct thread *td, struct linux_oldumount_args *args) 812 { 813 struct linux_umount_args args2; 814 815 args2.path = args->path; 816 args2.flags = 0; 817 return (linux_umount(td, &args2)); 818 } 819 820 int 821 linux_umount(struct thread *td, struct linux_umount_args *args) 822 { 823 struct unmount_args bsd; 824 825 bsd.path = args->path; 826 bsd.flags = args->flags; /* XXX correct? */ 827 return (unmount(td, &bsd)); 828 } 829 830 /* 831 * fcntl family of syscalls 832 */ 833 834 struct l_flock { 835 l_short l_type; 836 l_short l_whence; 837 l_off_t l_start; 838 l_off_t l_len; 839 l_pid_t l_pid; 840 } 841 #if defined(__amd64__) && defined(COMPAT_LINUX32) 842 __packed 843 #endif 844 ; 845 846 static void 847 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock) 848 { 849 switch (linux_flock->l_type) { 850 case LINUX_F_RDLCK: 851 bsd_flock->l_type = F_RDLCK; 852 break; 853 case LINUX_F_WRLCK: 854 bsd_flock->l_type = F_WRLCK; 855 break; 856 case LINUX_F_UNLCK: 857 bsd_flock->l_type = F_UNLCK; 858 break; 859 default: 860 bsd_flock->l_type = -1; 861 break; 862 } 863 bsd_flock->l_whence = linux_flock->l_whence; 864 bsd_flock->l_start = (off_t)linux_flock->l_start; 865 bsd_flock->l_len = (off_t)linux_flock->l_len; 866 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 867 } 868 869 static void 870 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock) 871 { 872 switch (bsd_flock->l_type) { 873 case F_RDLCK: 874 linux_flock->l_type = LINUX_F_RDLCK; 875 break; 876 case F_WRLCK: 877 linux_flock->l_type = LINUX_F_WRLCK; 878 break; 879 case F_UNLCK: 880 linux_flock->l_type = LINUX_F_UNLCK; 881 break; 882 } 883 linux_flock->l_whence = bsd_flock->l_whence; 884 linux_flock->l_start = (l_off_t)bsd_flock->l_start; 885 linux_flock->l_len = (l_off_t)bsd_flock->l_len; 886 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 887 } 888 889 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 890 struct l_flock64 { 891 l_short l_type; 892 l_short l_whence; 893 l_loff_t l_start; 894 l_loff_t l_len; 895 l_pid_t l_pid; 896 } 897 #if defined(__amd64__) && defined(COMPAT_LINUX32) 898 __packed 899 #endif 900 ; 901 902 static void 903 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock) 904 { 905 switch (linux_flock->l_type) { 906 case LINUX_F_RDLCK: 907 bsd_flock->l_type = F_RDLCK; 908 break; 909 case LINUX_F_WRLCK: 910 bsd_flock->l_type = F_WRLCK; 911 break; 912 case LINUX_F_UNLCK: 913 bsd_flock->l_type = F_UNLCK; 914 break; 915 default: 916 bsd_flock->l_type = -1; 917 break; 918 } 919 bsd_flock->l_whence = linux_flock->l_whence; 920 bsd_flock->l_start = (off_t)linux_flock->l_start; 921 bsd_flock->l_len = (off_t)linux_flock->l_len; 922 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 923 } 924 925 static void 926 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock) 927 { 928 switch (bsd_flock->l_type) { 929 case F_RDLCK: 930 linux_flock->l_type = LINUX_F_RDLCK; 931 break; 932 case F_WRLCK: 933 linux_flock->l_type = LINUX_F_WRLCK; 934 break; 935 case F_UNLCK: 936 linux_flock->l_type = LINUX_F_UNLCK; 937 break; 938 } 939 linux_flock->l_whence = bsd_flock->l_whence; 940 linux_flock->l_start = (l_loff_t)bsd_flock->l_start; 941 linux_flock->l_len = (l_loff_t)bsd_flock->l_len; 942 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 943 } 944 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 945 946 static int 947 fcntl_common(struct thread *td, struct linux_fcntl64_args *args) 948 { 949 struct l_flock linux_flock; 950 struct flock bsd_flock; 951 struct file *fp; 952 long arg; 953 int error, result; 954 955 switch (args->cmd) { 956 case LINUX_F_DUPFD: 957 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg)); 958 959 case LINUX_F_GETFD: 960 return (kern_fcntl(td, args->fd, F_GETFD, 0)); 961 962 case LINUX_F_SETFD: 963 return (kern_fcntl(td, args->fd, F_SETFD, args->arg)); 964 965 case LINUX_F_GETFL: 966 error = kern_fcntl(td, args->fd, F_GETFL, 0); 967 result = td->td_retval[0]; 968 td->td_retval[0] = 0; 969 if (result & O_RDONLY) 970 td->td_retval[0] |= LINUX_O_RDONLY; 971 if (result & O_WRONLY) 972 td->td_retval[0] |= LINUX_O_WRONLY; 973 if (result & O_RDWR) 974 td->td_retval[0] |= LINUX_O_RDWR; 975 if (result & O_NDELAY) 976 td->td_retval[0] |= LINUX_O_NONBLOCK; 977 if (result & O_APPEND) 978 td->td_retval[0] |= LINUX_O_APPEND; 979 if (result & O_FSYNC) 980 td->td_retval[0] |= LINUX_O_SYNC; 981 if (result & O_ASYNC) 982 td->td_retval[0] |= LINUX_FASYNC; 983 #ifdef LINUX_O_NOFOLLOW 984 if (result & O_NOFOLLOW) 985 td->td_retval[0] |= LINUX_O_NOFOLLOW; 986 #endif 987 #ifdef LINUX_O_DIRECT 988 if (result & O_DIRECT) 989 td->td_retval[0] |= LINUX_O_DIRECT; 990 #endif 991 return (error); 992 993 case LINUX_F_SETFL: 994 arg = 0; 995 if (args->arg & LINUX_O_NDELAY) 996 arg |= O_NONBLOCK; 997 if (args->arg & LINUX_O_APPEND) 998 arg |= O_APPEND; 999 if (args->arg & LINUX_O_SYNC) 1000 arg |= O_FSYNC; 1001 if (args->arg & LINUX_FASYNC) 1002 arg |= O_ASYNC; 1003 #ifdef LINUX_O_NOFOLLOW 1004 if (args->arg & LINUX_O_NOFOLLOW) 1005 arg |= O_NOFOLLOW; 1006 #endif 1007 #ifdef LINUX_O_DIRECT 1008 if (args->arg & LINUX_O_DIRECT) 1009 arg |= O_DIRECT; 1010 #endif 1011 return (kern_fcntl(td, args->fd, F_SETFL, arg)); 1012 1013 case LINUX_F_GETLK: 1014 error = copyin((void *)args->arg, &linux_flock, 1015 sizeof(linux_flock)); 1016 if (error) 1017 return (error); 1018 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1019 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1020 if (error) 1021 return (error); 1022 bsd_to_linux_flock(&bsd_flock, &linux_flock); 1023 return (copyout(&linux_flock, (void *)args->arg, 1024 sizeof(linux_flock))); 1025 1026 case LINUX_F_SETLK: 1027 error = copyin((void *)args->arg, &linux_flock, 1028 sizeof(linux_flock)); 1029 if (error) 1030 return (error); 1031 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1032 return (kern_fcntl(td, args->fd, F_SETLK, 1033 (intptr_t)&bsd_flock)); 1034 1035 case LINUX_F_SETLKW: 1036 error = copyin((void *)args->arg, &linux_flock, 1037 sizeof(linux_flock)); 1038 if (error) 1039 return (error); 1040 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1041 return (kern_fcntl(td, args->fd, F_SETLKW, 1042 (intptr_t)&bsd_flock)); 1043 1044 case LINUX_F_GETOWN: 1045 return (kern_fcntl(td, args->fd, F_GETOWN, 0)); 1046 1047 case LINUX_F_SETOWN: 1048 /* 1049 * XXX some Linux applications depend on F_SETOWN having no 1050 * significant effect for pipes (SIGIO is not delivered for 1051 * pipes under Linux-2.2.35 at least). 1052 */ 1053 error = fget(td, args->fd, &fp); 1054 if (error) 1055 return (error); 1056 if (fp->f_type == DTYPE_PIPE) { 1057 fdrop(fp, td); 1058 return (EINVAL); 1059 } 1060 fdrop(fp, td); 1061 1062 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg)); 1063 } 1064 1065 return (EINVAL); 1066 } 1067 1068 int 1069 linux_fcntl(struct thread *td, struct linux_fcntl_args *args) 1070 { 1071 struct linux_fcntl64_args args64; 1072 1073 #ifdef DEBUG 1074 if (ldebug(fcntl)) 1075 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd); 1076 #endif 1077 1078 args64.fd = args->fd; 1079 args64.cmd = args->cmd; 1080 args64.arg = args->arg; 1081 return (fcntl_common(td, &args64)); 1082 } 1083 1084 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1085 int 1086 linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args) 1087 { 1088 struct l_flock64 linux_flock; 1089 struct flock bsd_flock; 1090 int error; 1091 1092 #ifdef DEBUG 1093 if (ldebug(fcntl64)) 1094 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd); 1095 #endif 1096 1097 switch (args->cmd) { 1098 case LINUX_F_GETLK64: 1099 error = copyin((void *)args->arg, &linux_flock, 1100 sizeof(linux_flock)); 1101 if (error) 1102 return (error); 1103 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1104 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1105 if (error) 1106 return (error); 1107 bsd_to_linux_flock64(&bsd_flock, &linux_flock); 1108 return (copyout(&linux_flock, (void *)args->arg, 1109 sizeof(linux_flock))); 1110 1111 case LINUX_F_SETLK64: 1112 error = copyin((void *)args->arg, &linux_flock, 1113 sizeof(linux_flock)); 1114 if (error) 1115 return (error); 1116 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1117 return (kern_fcntl(td, args->fd, F_SETLK, 1118 (intptr_t)&bsd_flock)); 1119 1120 case LINUX_F_SETLKW64: 1121 error = copyin((void *)args->arg, &linux_flock, 1122 sizeof(linux_flock)); 1123 if (error) 1124 return (error); 1125 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1126 return (kern_fcntl(td, args->fd, F_SETLKW, 1127 (intptr_t)&bsd_flock)); 1128 } 1129 1130 return (fcntl_common(td, args)); 1131 } 1132 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1133 1134 int 1135 linux_chown(struct thread *td, struct linux_chown_args *args) 1136 { 1137 char *path; 1138 int error; 1139 1140 LCONVPATHEXIST(td, args->path, &path); 1141 1142 #ifdef DEBUG 1143 if (ldebug(chown)) 1144 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid); 1145 #endif 1146 error = kern_chown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1147 LFREEPATH(path); 1148 return (error); 1149 } 1150 1151 int 1152 linux_lchown(struct thread *td, struct linux_lchown_args *args) 1153 { 1154 char *path; 1155 int error; 1156 1157 LCONVPATHEXIST(td, args->path, &path); 1158 1159 #ifdef DEBUG 1160 if (ldebug(lchown)) 1161 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid); 1162 #endif 1163 error = kern_lchown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1164 LFREEPATH(path); 1165 return (error); 1166 } 1167