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 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/malloc.h> 43 #include <sys/mount.h> 44 #include <sys/mutex.h> 45 #include <sys/namei.h> 46 #include <sys/proc.h> 47 #include <sys/stat.h> 48 #include <sys/sx.h> 49 #include <sys/syscallsubr.h> 50 #include <sys/sysproto.h> 51 #include <sys/tty.h> 52 #include <sys/unistd.h> 53 #include <sys/vnode.h> 54 55 #include <security/mac/mac_framework.h> 56 57 #include <ufs/ufs/extattr.h> 58 #include <ufs/ufs/quota.h> 59 #include <ufs/ufs/ufsmount.h> 60 61 #ifdef COMPAT_LINUX32 62 #include <machine/../linux32/linux.h> 63 #include <machine/../linux32/linux32_proto.h> 64 #else 65 #include <machine/../linux/linux.h> 66 #include <machine/../linux/linux_proto.h> 67 #endif 68 #include <compat/linux/linux_util.h> 69 #include <compat/linux/linux_file.h> 70 71 int 72 linux_creat(struct thread *td, struct linux_creat_args *args) 73 { 74 char *path; 75 int error; 76 77 LCONVPATHEXIST(td, args->path, &path); 78 79 #ifdef DEBUG 80 if (ldebug(creat)) 81 printf(ARGS(creat, "%s, %d"), path, args->mode); 82 #endif 83 error = kern_open(td, path, UIO_SYSSPACE, O_WRONLY | O_CREAT | O_TRUNC, 84 args->mode); 85 LFREEPATH(path); 86 return (error); 87 } 88 89 90 static int 91 linux_common_open(struct thread *td, int dirfd, char *path, int l_flags, int mode) 92 { 93 struct proc *p = td->td_proc; 94 struct file *fp; 95 int fd; 96 int bsd_flags, error; 97 98 bsd_flags = 0; 99 switch (l_flags & LINUX_O_ACCMODE) { 100 case LINUX_O_WRONLY: 101 bsd_flags |= O_WRONLY; 102 break; 103 case LINUX_O_RDWR: 104 bsd_flags |= O_RDWR; 105 break; 106 default: 107 bsd_flags |= O_RDONLY; 108 } 109 if (l_flags & LINUX_O_NDELAY) 110 bsd_flags |= O_NONBLOCK; 111 if (l_flags & LINUX_O_APPEND) 112 bsd_flags |= O_APPEND; 113 if (l_flags & LINUX_O_SYNC) 114 bsd_flags |= O_FSYNC; 115 if (l_flags & LINUX_O_NONBLOCK) 116 bsd_flags |= O_NONBLOCK; 117 if (l_flags & LINUX_FASYNC) 118 bsd_flags |= O_ASYNC; 119 if (l_flags & LINUX_O_CREAT) 120 bsd_flags |= O_CREAT; 121 if (l_flags & LINUX_O_TRUNC) 122 bsd_flags |= O_TRUNC; 123 if (l_flags & LINUX_O_EXCL) 124 bsd_flags |= O_EXCL; 125 if (l_flags & LINUX_O_NOCTTY) 126 bsd_flags |= O_NOCTTY; 127 if (l_flags & LINUX_O_DIRECT) 128 bsd_flags |= O_DIRECT; 129 if (l_flags & LINUX_O_NOFOLLOW) 130 bsd_flags |= O_NOFOLLOW; 131 if (l_flags & LINUX_O_DIRECTORY) 132 bsd_flags |= O_DIRECTORY; 133 /* XXX LINUX_O_NOATIME: unable to be easily implemented. */ 134 135 error = kern_openat(td, dirfd, path, UIO_SYSSPACE, bsd_flags, mode); 136 137 if (!error) { 138 fd = td->td_retval[0]; 139 /* 140 * XXX In between kern_open() and fget(), another process 141 * having the same filedesc could use that fd without 142 * checking below. 143 */ 144 error = fget(td, fd, &fp); 145 if (!error) { 146 sx_slock(&proctree_lock); 147 PROC_LOCK(p); 148 if (!(bsd_flags & O_NOCTTY) && 149 SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 150 PROC_UNLOCK(p); 151 sx_unlock(&proctree_lock); 152 if (fp->f_type == DTYPE_VNODE) 153 (void) fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, 154 td->td_ucred, td); 155 } else { 156 PROC_UNLOCK(p); 157 sx_sunlock(&proctree_lock); 158 } 159 fdrop(fp, td); 160 /* 161 * XXX as above, fdrop()/kern_close() pair is racy. 162 */ 163 if (error) 164 kern_close(td, fd); 165 } 166 } 167 168 #ifdef DEBUG 169 if (ldebug(open)) 170 printf(LMSG("open returns error %d"), error); 171 #endif 172 LFREEPATH(path); 173 return (error); 174 } 175 176 int 177 linux_openat(struct thread *td, struct linux_openat_args *args) 178 { 179 char *path; 180 int dfd; 181 182 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 183 if (args->flags & LINUX_O_CREAT) 184 LCONVPATH_AT(td, args->filename, &path, 1, dfd); 185 else 186 LCONVPATH_AT(td, args->filename, &path, 0, dfd); 187 #ifdef DEBUG 188 if (ldebug(openat)) 189 printf(ARGS(openat, "%i, %s, 0x%x, 0x%x"), args->dfd, 190 path, args->flags, args->mode); 191 #endif 192 return (linux_common_open(td, dfd, path, args->flags, args->mode)); 193 } 194 195 int 196 linux_open(struct thread *td, struct linux_open_args *args) 197 { 198 char *path; 199 200 if (args->flags & LINUX_O_CREAT) 201 LCONVPATHCREAT(td, args->path, &path); 202 else 203 LCONVPATHEXIST(td, args->path, &path); 204 205 #ifdef DEBUG 206 if (ldebug(open)) 207 printf(ARGS(open, "%s, 0x%x, 0x%x"), 208 path, args->flags, args->mode); 209 #endif 210 211 return (linux_common_open(td, AT_FDCWD, path, args->flags, args->mode)); 212 } 213 214 int 215 linux_lseek(struct thread *td, struct linux_lseek_args *args) 216 { 217 218 struct lseek_args /* { 219 int fd; 220 int pad; 221 off_t offset; 222 int whence; 223 } */ tmp_args; 224 int error; 225 226 #ifdef DEBUG 227 if (ldebug(lseek)) 228 printf(ARGS(lseek, "%d, %ld, %d"), 229 args->fdes, (long)args->off, args->whence); 230 #endif 231 tmp_args.fd = args->fdes; 232 tmp_args.offset = (off_t)args->off; 233 tmp_args.whence = args->whence; 234 error = lseek(td, &tmp_args); 235 return error; 236 } 237 238 int 239 linux_llseek(struct thread *td, struct linux_llseek_args *args) 240 { 241 struct lseek_args bsd_args; 242 int error; 243 off_t off; 244 245 #ifdef DEBUG 246 if (ldebug(llseek)) 247 printf(ARGS(llseek, "%d, %d:%d, %d"), 248 args->fd, args->ohigh, args->olow, args->whence); 249 #endif 250 off = (args->olow) | (((off_t) args->ohigh) << 32); 251 252 bsd_args.fd = args->fd; 253 bsd_args.offset = off; 254 bsd_args.whence = args->whence; 255 256 if ((error = lseek(td, &bsd_args))) 257 return error; 258 259 if ((error = copyout(td->td_retval, args->res, sizeof (off_t)))) 260 return error; 261 262 td->td_retval[0] = 0; 263 return 0; 264 } 265 266 int 267 linux_readdir(struct thread *td, struct linux_readdir_args *args) 268 { 269 struct linux_getdents_args lda; 270 271 lda.fd = args->fd; 272 lda.dent = args->dent; 273 lda.count = 1; 274 return linux_getdents(td, &lda); 275 } 276 277 /* 278 * Note that linux_getdents(2) and linux_getdents64(2) have the same 279 * arguments. They only differ in the definition of struct dirent they 280 * operate on. We use this to common the code, with the exception of 281 * accessing struct dirent. Note that linux_readdir(2) is implemented 282 * by means of linux_getdents(2). In this case we never operate on 283 * struct dirent64 and thus don't need to handle it... 284 */ 285 286 struct l_dirent { 287 l_ulong d_ino; 288 l_off_t d_off; 289 l_ushort d_reclen; 290 char d_name[LINUX_NAME_MAX + 1]; 291 }; 292 293 struct l_dirent64 { 294 uint64_t d_ino; 295 int64_t d_off; 296 l_ushort d_reclen; 297 u_char d_type; 298 char d_name[LINUX_NAME_MAX + 1]; 299 }; 300 301 /* 302 * Linux uses the last byte in the dirent buffer to store d_type, 303 * at least glibc-2.7 requires it. That is why l_dirent is padded with 2 bytes. 304 */ 305 #define LINUX_RECLEN(namlen) \ 306 roundup((offsetof(struct l_dirent, d_name) + (namlen) + 2), \ 307 sizeof(l_ulong)) 308 309 #define LINUX_RECLEN64(namlen) \ 310 roundup((offsetof(struct l_dirent64, d_name) + (namlen) + 1), \ 311 sizeof(uint64_t)) 312 313 #define LINUX_MAXRECLEN max(LINUX_RECLEN(LINUX_NAME_MAX), \ 314 LINUX_RECLEN64(LINUX_NAME_MAX)) 315 #define LINUX_DIRBLKSIZ 512 316 317 static int 318 getdents_common(struct thread *td, struct linux_getdents64_args *args, 319 int is64bit) 320 { 321 struct dirent *bdp; 322 struct vnode *vp; 323 caddr_t inp, buf; /* BSD-format */ 324 int len, reclen; /* BSD-format */ 325 caddr_t outp; /* Linux-format */ 326 int resid, linuxreclen=0; /* Linux-format */ 327 caddr_t lbuf; /* Linux-format */ 328 struct file *fp; 329 struct uio auio; 330 struct iovec aiov; 331 off_t off; 332 struct l_dirent *linux_dirent; 333 struct l_dirent64 *linux_dirent64; 334 int buflen, error, eofflag, nbytes, justone; 335 u_long *cookies = NULL, *cookiep; 336 int ncookies, vfslocked; 337 338 nbytes = args->count; 339 if (nbytes == 1) { 340 /* readdir(2) case. Always struct dirent. */ 341 if (is64bit) 342 return (EINVAL); 343 nbytes = sizeof(*linux_dirent); 344 justone = 1; 345 } else 346 justone = 0; 347 348 if ((error = getvnode(td->td_proc->p_fd, args->fd, &fp)) != 0) 349 return (error); 350 351 if ((fp->f_flag & FREAD) == 0) { 352 fdrop(fp, td); 353 return (EBADF); 354 } 355 356 vp = fp->f_vnode; 357 vfslocked = VFS_LOCK_GIANT(vp->v_mount); 358 if (vp->v_type != VDIR) { 359 VFS_UNLOCK_GIANT(vfslocked); 360 fdrop(fp, td); 361 return (EINVAL); 362 } 363 364 off = fp->f_offset; 365 366 buflen = max(LINUX_DIRBLKSIZ, nbytes); 367 buflen = min(buflen, MAXBSIZE); 368 buf = malloc(buflen, M_TEMP, M_WAITOK); 369 lbuf = malloc(LINUX_MAXRECLEN, M_TEMP, M_WAITOK | M_ZERO); 370 vn_lock(vp, LK_SHARED | LK_RETRY); 371 372 aiov.iov_base = buf; 373 aiov.iov_len = buflen; 374 auio.uio_iov = &aiov; 375 auio.uio_iovcnt = 1; 376 auio.uio_rw = UIO_READ; 377 auio.uio_segflg = UIO_SYSSPACE; 378 auio.uio_td = td; 379 auio.uio_resid = buflen; 380 auio.uio_offset = off; 381 382 if (cookies) { 383 free(cookies, M_TEMP); 384 cookies = NULL; 385 } 386 387 #ifdef MAC 388 /* 389 * Do directory search MAC check using non-cached credentials. 390 */ 391 if ((error = mac_vnode_check_readdir(td->td_ucred, vp))) 392 goto out; 393 #endif /* MAC */ 394 if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, 395 &cookies))) 396 goto out; 397 398 inp = buf; 399 outp = (caddr_t)args->dirent; 400 resid = nbytes; 401 if ((len = buflen - auio.uio_resid) <= 0) 402 goto eof; 403 404 cookiep = cookies; 405 406 if (cookies) { 407 /* 408 * When using cookies, the vfs has the option of reading from 409 * a different offset than that supplied (UFS truncates the 410 * offset to a block boundary to make sure that it never reads 411 * partway through a directory entry, even if the directory 412 * has been compacted). 413 */ 414 while (len > 0 && ncookies > 0 && *cookiep <= off) { 415 bdp = (struct dirent *) inp; 416 len -= bdp->d_reclen; 417 inp += bdp->d_reclen; 418 cookiep++; 419 ncookies--; 420 } 421 } 422 423 while (len > 0) { 424 if (cookiep && ncookies == 0) 425 break; 426 bdp = (struct dirent *) inp; 427 reclen = bdp->d_reclen; 428 if (reclen & 3) { 429 error = EFAULT; 430 goto out; 431 } 432 433 if (bdp->d_fileno == 0) { 434 inp += reclen; 435 if (cookiep) { 436 off = *cookiep++; 437 ncookies--; 438 } else 439 off += reclen; 440 441 len -= reclen; 442 continue; 443 } 444 445 linuxreclen = (is64bit) 446 ? LINUX_RECLEN64(bdp->d_namlen) 447 : LINUX_RECLEN(bdp->d_namlen); 448 449 if (reclen > len || resid < linuxreclen) { 450 outp++; 451 break; 452 } 453 454 if (justone) { 455 /* readdir(2) case. */ 456 linux_dirent = (struct l_dirent*)lbuf; 457 linux_dirent->d_ino = bdp->d_fileno; 458 linux_dirent->d_off = (l_off_t)linuxreclen; 459 linux_dirent->d_reclen = (l_ushort)bdp->d_namlen; 460 strlcpy(linux_dirent->d_name, bdp->d_name, 461 linuxreclen - offsetof(struct l_dirent, d_name)); 462 error = copyout(linux_dirent, outp, linuxreclen); 463 } 464 if (is64bit) { 465 linux_dirent64 = (struct l_dirent64*)lbuf; 466 linux_dirent64->d_ino = bdp->d_fileno; 467 linux_dirent64->d_off = (cookiep) 468 ? (l_off_t)*cookiep 469 : (l_off_t)(off + reclen); 470 linux_dirent64->d_reclen = (l_ushort)linuxreclen; 471 linux_dirent64->d_type = bdp->d_type; 472 strlcpy(linux_dirent64->d_name, bdp->d_name, 473 linuxreclen - offsetof(struct l_dirent64, d_name)); 474 error = copyout(linux_dirent64, outp, linuxreclen); 475 } else if (!justone) { 476 linux_dirent = (struct l_dirent*)lbuf; 477 linux_dirent->d_ino = bdp->d_fileno; 478 linux_dirent->d_off = (cookiep) 479 ? (l_off_t)*cookiep 480 : (l_off_t)(off + reclen); 481 linux_dirent->d_reclen = (l_ushort)linuxreclen; 482 /* 483 * Copy d_type to last byte of l_dirent buffer 484 */ 485 lbuf[linuxreclen-1] = bdp->d_type; 486 strlcpy(linux_dirent->d_name, bdp->d_name, 487 linuxreclen - offsetof(struct l_dirent, d_name)-1); 488 error = copyout(linux_dirent, outp, linuxreclen); 489 } 490 491 if (error) 492 goto out; 493 494 inp += reclen; 495 if (cookiep) { 496 off = *cookiep++; 497 ncookies--; 498 } else 499 off += reclen; 500 501 outp += linuxreclen; 502 resid -= linuxreclen; 503 len -= reclen; 504 if (justone) 505 break; 506 } 507 508 if (outp == (caddr_t)args->dirent) { 509 nbytes = resid; 510 goto eof; 511 } 512 513 fp->f_offset = off; 514 if (justone) 515 nbytes = resid + linuxreclen; 516 517 eof: 518 td->td_retval[0] = nbytes - resid; 519 520 out: 521 if (cookies) 522 free(cookies, M_TEMP); 523 524 VOP_UNLOCK(vp, 0); 525 VFS_UNLOCK_GIANT(vfslocked); 526 fdrop(fp, td); 527 free(buf, M_TEMP); 528 free(lbuf, M_TEMP); 529 return (error); 530 } 531 532 int 533 linux_getdents(struct thread *td, struct linux_getdents_args *args) 534 { 535 536 #ifdef DEBUG 537 if (ldebug(getdents)) 538 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count); 539 #endif 540 541 return (getdents_common(td, (struct linux_getdents64_args*)args, 0)); 542 } 543 544 int 545 linux_getdents64(struct thread *td, struct linux_getdents64_args *args) 546 { 547 548 #ifdef DEBUG 549 if (ldebug(getdents64)) 550 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count); 551 #endif 552 553 return (getdents_common(td, args, 1)); 554 } 555 556 /* 557 * These exist mainly for hooks for doing /compat/linux translation. 558 */ 559 560 int 561 linux_access(struct thread *td, struct linux_access_args *args) 562 { 563 char *path; 564 int error; 565 566 /* linux convention */ 567 if (args->flags & ~(F_OK | X_OK | W_OK | R_OK)) 568 return (EINVAL); 569 570 LCONVPATHEXIST(td, args->path, &path); 571 572 #ifdef DEBUG 573 if (ldebug(access)) 574 printf(ARGS(access, "%s, %d"), path, args->flags); 575 #endif 576 error = kern_access(td, path, UIO_SYSSPACE, args->flags); 577 LFREEPATH(path); 578 579 return (error); 580 } 581 582 int 583 linux_faccessat(struct thread *td, struct linux_faccessat_args *args) 584 { 585 char *path; 586 int error, dfd; 587 588 /* linux convention */ 589 if (args->mode & ~(F_OK | X_OK | W_OK | R_OK)) 590 return (EINVAL); 591 592 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 593 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 594 595 #ifdef DEBUG 596 if (ldebug(access)) 597 printf(ARGS(access, "%s, %d"), path, args->mode); 598 #endif 599 600 error = kern_accessat(td, dfd, path, UIO_SYSSPACE, 0 /* XXX */, 601 args->mode); 602 LFREEPATH(path); 603 604 return (error); 605 } 606 607 int 608 linux_unlink(struct thread *td, struct linux_unlink_args *args) 609 { 610 char *path; 611 int error; 612 struct stat st; 613 614 LCONVPATHEXIST(td, args->path, &path); 615 616 #ifdef DEBUG 617 if (ldebug(unlink)) 618 printf(ARGS(unlink, "%s"), path); 619 #endif 620 621 error = kern_unlink(td, path, UIO_SYSSPACE); 622 if (error == EPERM) 623 /* Introduce POSIX noncompliant behaviour of Linux */ 624 if (kern_stat(td, path, UIO_SYSSPACE, &st) == 0) 625 if (S_ISDIR(st.st_mode)) 626 error = EISDIR; 627 LFREEPATH(path); 628 return (error); 629 } 630 631 int 632 linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args) 633 { 634 char *path; 635 int error, dfd; 636 struct stat st; 637 638 if (args->flag & ~LINUX_AT_REMOVEDIR) 639 return (EINVAL); 640 641 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 642 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); 643 644 #ifdef DEBUG 645 if (ldebug(unlinkat)) 646 printf(ARGS(unlinkat, "%s"), path); 647 #endif 648 649 if (args->flag & LINUX_AT_REMOVEDIR) 650 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE); 651 else 652 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE, 0); 653 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) { 654 /* Introduce POSIX noncompliant behaviour of Linux */ 655 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path, 656 UIO_SYSSPACE, &st) == 0 && S_ISDIR(st.st_mode)) 657 error = EISDIR; 658 } 659 LFREEPATH(path); 660 return (error); 661 } 662 int 663 linux_chdir(struct thread *td, struct linux_chdir_args *args) 664 { 665 char *path; 666 int error; 667 668 LCONVPATHEXIST(td, args->path, &path); 669 670 #ifdef DEBUG 671 if (ldebug(chdir)) 672 printf(ARGS(chdir, "%s"), path); 673 #endif 674 error = kern_chdir(td, path, UIO_SYSSPACE); 675 LFREEPATH(path); 676 return (error); 677 } 678 679 int 680 linux_chmod(struct thread *td, struct linux_chmod_args *args) 681 { 682 char *path; 683 int error; 684 685 LCONVPATHEXIST(td, args->path, &path); 686 687 #ifdef DEBUG 688 if (ldebug(chmod)) 689 printf(ARGS(chmod, "%s, %d"), path, args->mode); 690 #endif 691 error = kern_chmod(td, path, UIO_SYSSPACE, args->mode); 692 LFREEPATH(path); 693 return (error); 694 } 695 696 int 697 linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args) 698 { 699 char *path; 700 int error, dfd; 701 702 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 703 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 704 705 #ifdef DEBUG 706 if (ldebug(fchmodat)) 707 printf(ARGS(fchmodat, "%s, %d"), path, args->mode); 708 #endif 709 710 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0); 711 LFREEPATH(path); 712 return (error); 713 } 714 715 int 716 linux_mkdir(struct thread *td, struct linux_mkdir_args *args) 717 { 718 char *path; 719 int error; 720 721 LCONVPATHCREAT(td, args->path, &path); 722 723 #ifdef DEBUG 724 if (ldebug(mkdir)) 725 printf(ARGS(mkdir, "%s, %d"), path, args->mode); 726 #endif 727 error = kern_mkdir(td, path, UIO_SYSSPACE, args->mode); 728 LFREEPATH(path); 729 return (error); 730 } 731 732 int 733 linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args) 734 { 735 char *path; 736 int error, dfd; 737 738 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 739 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd); 740 741 #ifdef DEBUG 742 if (ldebug(mkdirat)) 743 printf(ARGS(mkdirat, "%s, %d"), path, args->mode); 744 #endif 745 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode); 746 LFREEPATH(path); 747 return (error); 748 } 749 750 int 751 linux_rmdir(struct thread *td, struct linux_rmdir_args *args) 752 { 753 char *path; 754 int error; 755 756 LCONVPATHEXIST(td, args->path, &path); 757 758 #ifdef DEBUG 759 if (ldebug(rmdir)) 760 printf(ARGS(rmdir, "%s"), path); 761 #endif 762 error = kern_rmdir(td, path, UIO_SYSSPACE); 763 LFREEPATH(path); 764 return (error); 765 } 766 767 int 768 linux_rename(struct thread *td, struct linux_rename_args *args) 769 { 770 char *from, *to; 771 int error; 772 773 LCONVPATHEXIST(td, args->from, &from); 774 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 775 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 776 if (to == NULL) { 777 LFREEPATH(from); 778 return (error); 779 } 780 781 #ifdef DEBUG 782 if (ldebug(rename)) 783 printf(ARGS(rename, "%s, %s"), from, to); 784 #endif 785 error = kern_rename(td, from, to, UIO_SYSSPACE); 786 LFREEPATH(from); 787 LFREEPATH(to); 788 return (error); 789 } 790 791 int 792 linux_renameat(struct thread *td, struct linux_renameat_args *args) 793 { 794 char *from, *to; 795 int error, olddfd, newdfd; 796 797 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 798 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 799 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd); 800 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 801 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 802 if (to == NULL) { 803 LFREEPATH(from); 804 return (error); 805 } 806 807 #ifdef DEBUG 808 if (ldebug(renameat)) 809 printf(ARGS(renameat, "%s, %s"), from, to); 810 #endif 811 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE); 812 LFREEPATH(from); 813 LFREEPATH(to); 814 return (error); 815 } 816 817 int 818 linux_symlink(struct thread *td, struct linux_symlink_args *args) 819 { 820 char *path, *to; 821 int error; 822 823 LCONVPATHEXIST(td, args->path, &path); 824 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 825 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 826 if (to == NULL) { 827 LFREEPATH(path); 828 return (error); 829 } 830 831 #ifdef DEBUG 832 if (ldebug(symlink)) 833 printf(ARGS(symlink, "%s, %s"), path, to); 834 #endif 835 error = kern_symlink(td, path, to, UIO_SYSSPACE); 836 LFREEPATH(path); 837 LFREEPATH(to); 838 return (error); 839 } 840 841 int 842 linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args) 843 { 844 char *path, *to; 845 int error, dfd; 846 847 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 848 LCONVPATHEXIST_AT(td, args->oldname, &path, dfd); 849 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 850 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd); 851 if (to == NULL) { 852 LFREEPATH(path); 853 return (error); 854 } 855 856 #ifdef DEBUG 857 if (ldebug(symlinkat)) 858 printf(ARGS(symlinkat, "%s, %s"), path, to); 859 #endif 860 861 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE); 862 LFREEPATH(path); 863 LFREEPATH(to); 864 return (error); 865 } 866 867 int 868 linux_readlink(struct thread *td, struct linux_readlink_args *args) 869 { 870 char *name; 871 int error; 872 873 LCONVPATHEXIST(td, args->name, &name); 874 875 #ifdef DEBUG 876 if (ldebug(readlink)) 877 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf, 878 args->count); 879 #endif 880 error = kern_readlink(td, name, UIO_SYSSPACE, args->buf, UIO_USERSPACE, 881 args->count); 882 LFREEPATH(name); 883 return (error); 884 } 885 886 int 887 linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args) 888 { 889 char *name; 890 int error, dfd; 891 892 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 893 LCONVPATHEXIST_AT(td, args->path, &name, dfd); 894 895 #ifdef DEBUG 896 if (ldebug(readlinkat)) 897 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf, 898 args->bufsiz); 899 #endif 900 901 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf, 902 UIO_USERSPACE, args->bufsiz); 903 LFREEPATH(name); 904 return (error); 905 } 906 907 int 908 linux_truncate(struct thread *td, struct linux_truncate_args *args) 909 { 910 char *path; 911 int error; 912 913 LCONVPATHEXIST(td, args->path, &path); 914 915 #ifdef DEBUG 916 if (ldebug(truncate)) 917 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length); 918 #endif 919 920 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 921 LFREEPATH(path); 922 return (error); 923 } 924 925 int 926 linux_truncate64(struct thread *td, struct linux_truncate64_args *args) 927 { 928 char *path; 929 int error; 930 931 LCONVPATHEXIST(td, args->path, &path); 932 933 #ifdef DEBUG 934 if (ldebug(truncate64)) 935 printf(ARGS(truncate64, "%s, %jd"), path, args->length); 936 #endif 937 938 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 939 LFREEPATH(path); 940 return (error); 941 } 942 int 943 linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args) 944 { 945 struct ftruncate_args /* { 946 int fd; 947 int pad; 948 off_t length; 949 } */ nuap; 950 951 nuap.fd = args->fd; 952 nuap.length = args->length; 953 return (ftruncate(td, &nuap)); 954 } 955 956 int 957 linux_link(struct thread *td, struct linux_link_args *args) 958 { 959 char *path, *to; 960 int error; 961 962 LCONVPATHEXIST(td, args->path, &path); 963 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 964 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 965 if (to == NULL) { 966 LFREEPATH(path); 967 return (error); 968 } 969 970 #ifdef DEBUG 971 if (ldebug(link)) 972 printf(ARGS(link, "%s, %s"), path, to); 973 #endif 974 error = kern_link(td, path, to, UIO_SYSSPACE); 975 LFREEPATH(path); 976 LFREEPATH(to); 977 return (error); 978 } 979 980 int 981 linux_linkat(struct thread *td, struct linux_linkat_args *args) 982 { 983 char *path, *to; 984 int error, olddfd, newdfd; 985 986 /* 987 * They really introduced flags argument which is forbidden to 988 * use. 989 */ 990 if (args->flags != 0) 991 return (EINVAL); 992 993 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 994 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 995 LCONVPATHEXIST_AT(td, args->oldname, &path, olddfd); 996 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 997 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 998 if (to == NULL) { 999 LFREEPATH(path); 1000 return (error); 1001 } 1002 1003 #ifdef DEBUG 1004 if (ldebug(linkat)) 1005 printf(ARGS(linkat, "%i, %s, %i, %s, %i"), args->olddfd, path, 1006 args->newdfd, to, args->flags); 1007 #endif 1008 1009 error = kern_linkat(td, olddfd, newdfd, path, to, UIO_SYSSPACE, FOLLOW); 1010 LFREEPATH(path); 1011 LFREEPATH(to); 1012 return (error); 1013 } 1014 1015 int 1016 linux_fdatasync(td, uap) 1017 struct thread *td; 1018 struct linux_fdatasync_args *uap; 1019 { 1020 struct fsync_args bsd; 1021 1022 bsd.fd = uap->fd; 1023 return fsync(td, &bsd); 1024 } 1025 1026 int 1027 linux_pread(td, uap) 1028 struct thread *td; 1029 struct linux_pread_args *uap; 1030 { 1031 struct pread_args bsd; 1032 struct vnode *vp; 1033 int error; 1034 1035 bsd.fd = uap->fd; 1036 bsd.buf = uap->buf; 1037 bsd.nbyte = uap->nbyte; 1038 bsd.offset = uap->offset; 1039 1040 error = pread(td, &bsd); 1041 1042 if (error == 0) { 1043 /* This seems to violate POSIX but linux does it */ 1044 if ((error = fgetvp(td, uap->fd, &vp)) != 0) 1045 return (error); 1046 if (vp->v_type == VDIR) { 1047 vrele(vp); 1048 return (EISDIR); 1049 } 1050 vrele(vp); 1051 } 1052 1053 return (error); 1054 } 1055 1056 int 1057 linux_pwrite(td, uap) 1058 struct thread *td; 1059 struct linux_pwrite_args *uap; 1060 { 1061 struct pwrite_args bsd; 1062 1063 bsd.fd = uap->fd; 1064 bsd.buf = uap->buf; 1065 bsd.nbyte = uap->nbyte; 1066 bsd.offset = uap->offset; 1067 return pwrite(td, &bsd); 1068 } 1069 1070 int 1071 linux_mount(struct thread *td, struct linux_mount_args *args) 1072 { 1073 struct ufs_args ufs; 1074 char fstypename[MFSNAMELEN]; 1075 char mntonname[MNAMELEN], mntfromname[MNAMELEN]; 1076 int error; 1077 int fsflags; 1078 void *fsdata; 1079 1080 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1, 1081 NULL); 1082 if (error) 1083 return (error); 1084 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL); 1085 if (error) 1086 return (error); 1087 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL); 1088 if (error) 1089 return (error); 1090 1091 #ifdef DEBUG 1092 if (ldebug(mount)) 1093 printf(ARGS(mount, "%s, %s, %s"), 1094 fstypename, mntfromname, mntonname); 1095 #endif 1096 1097 if (strcmp(fstypename, "ext2") == 0) { 1098 strcpy(fstypename, "ext2fs"); 1099 fsdata = &ufs; 1100 ufs.fspec = mntfromname; 1101 #define DEFAULT_ROOTID -2 1102 ufs.export.ex_root = DEFAULT_ROOTID; 1103 ufs.export.ex_flags = 1104 args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0; 1105 } else if (strcmp(fstypename, "proc") == 0) { 1106 strcpy(fstypename, "linprocfs"); 1107 fsdata = NULL; 1108 } else if (strcmp(fstypename, "vfat") == 0) { 1109 strcpy(fstypename, "msdosfs"); 1110 fsdata = NULL; 1111 } else { 1112 return (ENODEV); 1113 } 1114 1115 fsflags = 0; 1116 1117 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) { 1118 /* 1119 * Linux SYNC flag is not included; the closest equivalent 1120 * FreeBSD has is !ASYNC, which is our default. 1121 */ 1122 if (args->rwflag & LINUX_MS_RDONLY) 1123 fsflags |= MNT_RDONLY; 1124 if (args->rwflag & LINUX_MS_NOSUID) 1125 fsflags |= MNT_NOSUID; 1126 if (args->rwflag & LINUX_MS_NOEXEC) 1127 fsflags |= MNT_NOEXEC; 1128 if (args->rwflag & LINUX_MS_REMOUNT) 1129 fsflags |= MNT_UPDATE; 1130 } 1131 1132 if (strcmp(fstypename, "linprocfs") == 0) { 1133 error = kernel_vmount(fsflags, 1134 "fstype", fstypename, 1135 "fspath", mntonname, 1136 NULL); 1137 } else if (strcmp(fstypename, "msdosfs") == 0) { 1138 error = kernel_vmount(fsflags, 1139 "fstype", fstypename, 1140 "fspath", mntonname, 1141 "from", mntfromname, 1142 NULL); 1143 } else 1144 error = EOPNOTSUPP; 1145 return (error); 1146 } 1147 1148 int 1149 linux_oldumount(struct thread *td, struct linux_oldumount_args *args) 1150 { 1151 struct linux_umount_args args2; 1152 1153 args2.path = args->path; 1154 args2.flags = 0; 1155 return (linux_umount(td, &args2)); 1156 } 1157 1158 int 1159 linux_umount(struct thread *td, struct linux_umount_args *args) 1160 { 1161 struct unmount_args bsd; 1162 1163 bsd.path = args->path; 1164 bsd.flags = args->flags; /* XXX correct? */ 1165 return (unmount(td, &bsd)); 1166 } 1167 1168 /* 1169 * fcntl family of syscalls 1170 */ 1171 1172 struct l_flock { 1173 l_short l_type; 1174 l_short l_whence; 1175 l_off_t l_start; 1176 l_off_t l_len; 1177 l_pid_t l_pid; 1178 } 1179 #if defined(__amd64__) && defined(COMPAT_LINUX32) 1180 __packed 1181 #endif 1182 ; 1183 1184 static void 1185 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock) 1186 { 1187 switch (linux_flock->l_type) { 1188 case LINUX_F_RDLCK: 1189 bsd_flock->l_type = F_RDLCK; 1190 break; 1191 case LINUX_F_WRLCK: 1192 bsd_flock->l_type = F_WRLCK; 1193 break; 1194 case LINUX_F_UNLCK: 1195 bsd_flock->l_type = F_UNLCK; 1196 break; 1197 default: 1198 bsd_flock->l_type = -1; 1199 break; 1200 } 1201 bsd_flock->l_whence = linux_flock->l_whence; 1202 bsd_flock->l_start = (off_t)linux_flock->l_start; 1203 bsd_flock->l_len = (off_t)linux_flock->l_len; 1204 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1205 bsd_flock->l_sysid = 0; 1206 } 1207 1208 static void 1209 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock) 1210 { 1211 switch (bsd_flock->l_type) { 1212 case F_RDLCK: 1213 linux_flock->l_type = LINUX_F_RDLCK; 1214 break; 1215 case F_WRLCK: 1216 linux_flock->l_type = LINUX_F_WRLCK; 1217 break; 1218 case F_UNLCK: 1219 linux_flock->l_type = LINUX_F_UNLCK; 1220 break; 1221 } 1222 linux_flock->l_whence = bsd_flock->l_whence; 1223 linux_flock->l_start = (l_off_t)bsd_flock->l_start; 1224 linux_flock->l_len = (l_off_t)bsd_flock->l_len; 1225 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1226 } 1227 1228 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1229 struct l_flock64 { 1230 l_short l_type; 1231 l_short l_whence; 1232 l_loff_t l_start; 1233 l_loff_t l_len; 1234 l_pid_t l_pid; 1235 } 1236 #if defined(__amd64__) && defined(COMPAT_LINUX32) 1237 __packed 1238 #endif 1239 ; 1240 1241 static void 1242 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock) 1243 { 1244 switch (linux_flock->l_type) { 1245 case LINUX_F_RDLCK: 1246 bsd_flock->l_type = F_RDLCK; 1247 break; 1248 case LINUX_F_WRLCK: 1249 bsd_flock->l_type = F_WRLCK; 1250 break; 1251 case LINUX_F_UNLCK: 1252 bsd_flock->l_type = F_UNLCK; 1253 break; 1254 default: 1255 bsd_flock->l_type = -1; 1256 break; 1257 } 1258 bsd_flock->l_whence = linux_flock->l_whence; 1259 bsd_flock->l_start = (off_t)linux_flock->l_start; 1260 bsd_flock->l_len = (off_t)linux_flock->l_len; 1261 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1262 bsd_flock->l_sysid = 0; 1263 } 1264 1265 static void 1266 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock) 1267 { 1268 switch (bsd_flock->l_type) { 1269 case F_RDLCK: 1270 linux_flock->l_type = LINUX_F_RDLCK; 1271 break; 1272 case F_WRLCK: 1273 linux_flock->l_type = LINUX_F_WRLCK; 1274 break; 1275 case F_UNLCK: 1276 linux_flock->l_type = LINUX_F_UNLCK; 1277 break; 1278 } 1279 linux_flock->l_whence = bsd_flock->l_whence; 1280 linux_flock->l_start = (l_loff_t)bsd_flock->l_start; 1281 linux_flock->l_len = (l_loff_t)bsd_flock->l_len; 1282 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1283 } 1284 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1285 1286 static int 1287 fcntl_common(struct thread *td, struct linux_fcntl64_args *args) 1288 { 1289 struct l_flock linux_flock; 1290 struct flock bsd_flock; 1291 struct file *fp; 1292 long arg; 1293 int error, result; 1294 1295 switch (args->cmd) { 1296 case LINUX_F_DUPFD: 1297 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg)); 1298 1299 case LINUX_F_GETFD: 1300 return (kern_fcntl(td, args->fd, F_GETFD, 0)); 1301 1302 case LINUX_F_SETFD: 1303 return (kern_fcntl(td, args->fd, F_SETFD, args->arg)); 1304 1305 case LINUX_F_GETFL: 1306 error = kern_fcntl(td, args->fd, F_GETFL, 0); 1307 result = td->td_retval[0]; 1308 td->td_retval[0] = 0; 1309 if (result & O_RDONLY) 1310 td->td_retval[0] |= LINUX_O_RDONLY; 1311 if (result & O_WRONLY) 1312 td->td_retval[0] |= LINUX_O_WRONLY; 1313 if (result & O_RDWR) 1314 td->td_retval[0] |= LINUX_O_RDWR; 1315 if (result & O_NDELAY) 1316 td->td_retval[0] |= LINUX_O_NONBLOCK; 1317 if (result & O_APPEND) 1318 td->td_retval[0] |= LINUX_O_APPEND; 1319 if (result & O_FSYNC) 1320 td->td_retval[0] |= LINUX_O_SYNC; 1321 if (result & O_ASYNC) 1322 td->td_retval[0] |= LINUX_FASYNC; 1323 #ifdef LINUX_O_NOFOLLOW 1324 if (result & O_NOFOLLOW) 1325 td->td_retval[0] |= LINUX_O_NOFOLLOW; 1326 #endif 1327 #ifdef LINUX_O_DIRECT 1328 if (result & O_DIRECT) 1329 td->td_retval[0] |= LINUX_O_DIRECT; 1330 #endif 1331 return (error); 1332 1333 case LINUX_F_SETFL: 1334 arg = 0; 1335 if (args->arg & LINUX_O_NDELAY) 1336 arg |= O_NONBLOCK; 1337 if (args->arg & LINUX_O_APPEND) 1338 arg |= O_APPEND; 1339 if (args->arg & LINUX_O_SYNC) 1340 arg |= O_FSYNC; 1341 if (args->arg & LINUX_FASYNC) 1342 arg |= O_ASYNC; 1343 #ifdef LINUX_O_NOFOLLOW 1344 if (args->arg & LINUX_O_NOFOLLOW) 1345 arg |= O_NOFOLLOW; 1346 #endif 1347 #ifdef LINUX_O_DIRECT 1348 if (args->arg & LINUX_O_DIRECT) 1349 arg |= O_DIRECT; 1350 #endif 1351 return (kern_fcntl(td, args->fd, F_SETFL, arg)); 1352 1353 case LINUX_F_GETLK: 1354 error = copyin((void *)args->arg, &linux_flock, 1355 sizeof(linux_flock)); 1356 if (error) 1357 return (error); 1358 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1359 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1360 if (error) 1361 return (error); 1362 bsd_to_linux_flock(&bsd_flock, &linux_flock); 1363 return (copyout(&linux_flock, (void *)args->arg, 1364 sizeof(linux_flock))); 1365 1366 case LINUX_F_SETLK: 1367 error = copyin((void *)args->arg, &linux_flock, 1368 sizeof(linux_flock)); 1369 if (error) 1370 return (error); 1371 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1372 return (kern_fcntl(td, args->fd, F_SETLK, 1373 (intptr_t)&bsd_flock)); 1374 1375 case LINUX_F_SETLKW: 1376 error = copyin((void *)args->arg, &linux_flock, 1377 sizeof(linux_flock)); 1378 if (error) 1379 return (error); 1380 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1381 return (kern_fcntl(td, args->fd, F_SETLKW, 1382 (intptr_t)&bsd_flock)); 1383 1384 case LINUX_F_GETOWN: 1385 return (kern_fcntl(td, args->fd, F_GETOWN, 0)); 1386 1387 case LINUX_F_SETOWN: 1388 /* 1389 * XXX some Linux applications depend on F_SETOWN having no 1390 * significant effect for pipes (SIGIO is not delivered for 1391 * pipes under Linux-2.2.35 at least). 1392 */ 1393 error = fget(td, args->fd, &fp); 1394 if (error) 1395 return (error); 1396 if (fp->f_type == DTYPE_PIPE) { 1397 fdrop(fp, td); 1398 return (EINVAL); 1399 } 1400 fdrop(fp, td); 1401 1402 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg)); 1403 } 1404 1405 return (EINVAL); 1406 } 1407 1408 int 1409 linux_fcntl(struct thread *td, struct linux_fcntl_args *args) 1410 { 1411 struct linux_fcntl64_args args64; 1412 1413 #ifdef DEBUG 1414 if (ldebug(fcntl)) 1415 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd); 1416 #endif 1417 1418 args64.fd = args->fd; 1419 args64.cmd = args->cmd; 1420 args64.arg = args->arg; 1421 return (fcntl_common(td, &args64)); 1422 } 1423 1424 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1425 int 1426 linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args) 1427 { 1428 struct l_flock64 linux_flock; 1429 struct flock bsd_flock; 1430 int error; 1431 1432 #ifdef DEBUG 1433 if (ldebug(fcntl64)) 1434 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd); 1435 #endif 1436 1437 switch (args->cmd) { 1438 case LINUX_F_GETLK64: 1439 error = copyin((void *)args->arg, &linux_flock, 1440 sizeof(linux_flock)); 1441 if (error) 1442 return (error); 1443 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1444 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1445 if (error) 1446 return (error); 1447 bsd_to_linux_flock64(&bsd_flock, &linux_flock); 1448 return (copyout(&linux_flock, (void *)args->arg, 1449 sizeof(linux_flock))); 1450 1451 case LINUX_F_SETLK64: 1452 error = copyin((void *)args->arg, &linux_flock, 1453 sizeof(linux_flock)); 1454 if (error) 1455 return (error); 1456 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1457 return (kern_fcntl(td, args->fd, F_SETLK, 1458 (intptr_t)&bsd_flock)); 1459 1460 case LINUX_F_SETLKW64: 1461 error = copyin((void *)args->arg, &linux_flock, 1462 sizeof(linux_flock)); 1463 if (error) 1464 return (error); 1465 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1466 return (kern_fcntl(td, args->fd, F_SETLKW, 1467 (intptr_t)&bsd_flock)); 1468 } 1469 1470 return (fcntl_common(td, args)); 1471 } 1472 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1473 1474 int 1475 linux_chown(struct thread *td, struct linux_chown_args *args) 1476 { 1477 char *path; 1478 int error; 1479 1480 LCONVPATHEXIST(td, args->path, &path); 1481 1482 #ifdef DEBUG 1483 if (ldebug(chown)) 1484 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid); 1485 #endif 1486 error = kern_chown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1487 LFREEPATH(path); 1488 return (error); 1489 } 1490 1491 int 1492 linux_fchownat(struct thread *td, struct linux_fchownat_args *args) 1493 { 1494 char *path; 1495 int error, dfd, follow; 1496 1497 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW) 1498 return (EINVAL); 1499 1500 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 1501 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 1502 1503 #ifdef DEBUG 1504 if (ldebug(fchownat)) 1505 printf(ARGS(fchownat, "%s, %d, %d"), path, args->uid, args->gid); 1506 #endif 1507 1508 follow = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 : 1509 AT_SYMLINK_NOFOLLOW; 1510 error = kern_fchownat(td, dfd, path, UIO_SYSSPACE, args->uid, args->gid, 1511 follow); 1512 LFREEPATH(path); 1513 return (error); 1514 } 1515 1516 int 1517 linux_lchown(struct thread *td, struct linux_lchown_args *args) 1518 { 1519 char *path; 1520 int error; 1521 1522 LCONVPATHEXIST(td, args->path, &path); 1523 1524 #ifdef DEBUG 1525 if (ldebug(lchown)) 1526 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid); 1527 #endif 1528 error = kern_lchown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1529 LFREEPATH(path); 1530 return (error); 1531 } 1532