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 again: 373 aiov.iov_base = buf; 374 aiov.iov_len = buflen; 375 auio.uio_iov = &aiov; 376 auio.uio_iovcnt = 1; 377 auio.uio_rw = UIO_READ; 378 auio.uio_segflg = UIO_SYSSPACE; 379 auio.uio_td = td; 380 auio.uio_resid = buflen; 381 auio.uio_offset = off; 382 383 if (cookies) { 384 free(cookies, M_TEMP); 385 cookies = NULL; 386 } 387 388 #ifdef MAC 389 /* 390 * Do directory search MAC check using non-cached credentials. 391 */ 392 if ((error = mac_vnode_check_readdir(td->td_ucred, vp))) 393 goto out; 394 #endif /* MAC */ 395 if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, 396 &cookies))) 397 goto out; 398 399 inp = buf; 400 outp = (caddr_t)args->dirent; 401 resid = nbytes; 402 if ((len = buflen - auio.uio_resid) <= 0) 403 goto eof; 404 405 cookiep = cookies; 406 407 if (cookies) { 408 /* 409 * When using cookies, the vfs has the option of reading from 410 * a different offset than that supplied (UFS truncates the 411 * offset to a block boundary to make sure that it never reads 412 * partway through a directory entry, even if the directory 413 * has been compacted). 414 */ 415 while (len > 0 && ncookies > 0 && *cookiep <= off) { 416 bdp = (struct dirent *) inp; 417 len -= bdp->d_reclen; 418 inp += bdp->d_reclen; 419 cookiep++; 420 ncookies--; 421 } 422 } 423 424 while (len > 0) { 425 if (cookiep && ncookies == 0) 426 break; 427 bdp = (struct dirent *) inp; 428 reclen = bdp->d_reclen; 429 if (reclen & 3) { 430 error = EFAULT; 431 goto out; 432 } 433 434 if (bdp->d_fileno == 0) { 435 inp += reclen; 436 if (cookiep) { 437 off = *cookiep++; 438 ncookies--; 439 } else 440 off += reclen; 441 442 len -= reclen; 443 continue; 444 } 445 446 linuxreclen = (is64bit) 447 ? LINUX_RECLEN64(bdp->d_namlen) 448 : LINUX_RECLEN(bdp->d_namlen); 449 450 if (reclen > len || resid < linuxreclen) { 451 outp++; 452 break; 453 } 454 455 if (justone) { 456 /* readdir(2) case. */ 457 linux_dirent = (struct l_dirent*)lbuf; 458 linux_dirent->d_ino = bdp->d_fileno; 459 linux_dirent->d_off = (l_off_t)linuxreclen; 460 linux_dirent->d_reclen = (l_ushort)bdp->d_namlen; 461 strlcpy(linux_dirent->d_name, bdp->d_name, 462 linuxreclen - offsetof(struct l_dirent, d_name)); 463 error = copyout(linux_dirent, outp, linuxreclen); 464 } 465 if (is64bit) { 466 linux_dirent64 = (struct l_dirent64*)lbuf; 467 linux_dirent64->d_ino = bdp->d_fileno; 468 linux_dirent64->d_off = (cookiep) 469 ? (l_off_t)*cookiep 470 : (l_off_t)(off + reclen); 471 linux_dirent64->d_reclen = (l_ushort)linuxreclen; 472 linux_dirent64->d_type = bdp->d_type; 473 strlcpy(linux_dirent64->d_name, bdp->d_name, 474 linuxreclen - offsetof(struct l_dirent64, d_name)); 475 error = copyout(linux_dirent64, outp, linuxreclen); 476 } else if (!justone) { 477 linux_dirent = (struct l_dirent*)lbuf; 478 linux_dirent->d_ino = bdp->d_fileno; 479 linux_dirent->d_off = (cookiep) 480 ? (l_off_t)*cookiep 481 : (l_off_t)(off + reclen); 482 linux_dirent->d_reclen = (l_ushort)linuxreclen; 483 /* 484 * Copy d_type to last byte of l_dirent buffer 485 */ 486 lbuf[linuxreclen-1] = bdp->d_type; 487 strlcpy(linux_dirent->d_name, bdp->d_name, 488 linuxreclen - offsetof(struct l_dirent, d_name)-1); 489 error = copyout(linux_dirent, outp, linuxreclen); 490 } 491 492 if (error) 493 goto out; 494 495 inp += reclen; 496 if (cookiep) { 497 off = *cookiep++; 498 ncookies--; 499 } else 500 off += reclen; 501 502 outp += linuxreclen; 503 resid -= linuxreclen; 504 len -= reclen; 505 if (justone) 506 break; 507 } 508 509 if (outp == (caddr_t)args->dirent) 510 goto again; 511 512 fp->f_offset = off; 513 if (justone) 514 nbytes = resid + linuxreclen; 515 516 eof: 517 td->td_retval[0] = nbytes - resid; 518 519 out: 520 if (cookies) 521 free(cookies, M_TEMP); 522 523 VOP_UNLOCK(vp, 0); 524 VFS_UNLOCK_GIANT(vfslocked); 525 fdrop(fp, td); 526 free(buf, M_TEMP); 527 free(lbuf, M_TEMP); 528 return (error); 529 } 530 531 int 532 linux_getdents(struct thread *td, struct linux_getdents_args *args) 533 { 534 535 #ifdef DEBUG 536 if (ldebug(getdents)) 537 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count); 538 #endif 539 540 return (getdents_common(td, (struct linux_getdents64_args*)args, 0)); 541 } 542 543 int 544 linux_getdents64(struct thread *td, struct linux_getdents64_args *args) 545 { 546 547 #ifdef DEBUG 548 if (ldebug(getdents64)) 549 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count); 550 #endif 551 552 return (getdents_common(td, args, 1)); 553 } 554 555 /* 556 * These exist mainly for hooks for doing /compat/linux translation. 557 */ 558 559 int 560 linux_access(struct thread *td, struct linux_access_args *args) 561 { 562 char *path; 563 int error; 564 565 /* linux convention */ 566 if (args->flags & ~(F_OK | X_OK | W_OK | R_OK)) 567 return (EINVAL); 568 569 LCONVPATHEXIST(td, args->path, &path); 570 571 #ifdef DEBUG 572 if (ldebug(access)) 573 printf(ARGS(access, "%s, %d"), path, args->flags); 574 #endif 575 error = kern_access(td, path, UIO_SYSSPACE, args->flags); 576 LFREEPATH(path); 577 578 return (error); 579 } 580 581 int 582 linux_faccessat(struct thread *td, struct linux_faccessat_args *args) 583 { 584 char *path; 585 int error, dfd; 586 587 /* linux convention */ 588 if (args->mode & ~(F_OK | X_OK | W_OK | R_OK)) 589 return (EINVAL); 590 591 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 592 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 593 594 #ifdef DEBUG 595 if (ldebug(access)) 596 printf(ARGS(access, "%s, %d"), path, args->mode); 597 #endif 598 599 error = kern_accessat(td, dfd, path, UIO_SYSSPACE, 0 /* XXX */, 600 args->mode); 601 LFREEPATH(path); 602 603 return (error); 604 } 605 606 int 607 linux_unlink(struct thread *td, struct linux_unlink_args *args) 608 { 609 char *path; 610 int error; 611 struct stat st; 612 613 LCONVPATHEXIST(td, args->path, &path); 614 615 #ifdef DEBUG 616 if (ldebug(unlink)) 617 printf(ARGS(unlink, "%s"), path); 618 #endif 619 620 error = kern_unlink(td, path, UIO_SYSSPACE); 621 if (error == EPERM) 622 /* Introduce POSIX noncompliant behaviour of Linux */ 623 if (kern_stat(td, path, UIO_SYSSPACE, &st) == 0) 624 if (S_ISDIR(st.st_mode)) 625 error = EISDIR; 626 LFREEPATH(path); 627 return (error); 628 } 629 630 int 631 linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args) 632 { 633 char *path; 634 int error, dfd; 635 struct stat st; 636 637 if (args->flag & ~LINUX_AT_REMOVEDIR) 638 return (EINVAL); 639 640 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 641 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); 642 643 #ifdef DEBUG 644 if (ldebug(unlinkat)) 645 printf(ARGS(unlinkat, "%s"), path); 646 #endif 647 648 if (args->flag & LINUX_AT_REMOVEDIR) 649 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE); 650 else 651 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE, 0); 652 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) { 653 /* Introduce POSIX noncompliant behaviour of Linux */ 654 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path, 655 UIO_SYSSPACE, &st) == 0 && S_ISDIR(st.st_mode)) 656 error = EISDIR; 657 } 658 LFREEPATH(path); 659 return (error); 660 } 661 int 662 linux_chdir(struct thread *td, struct linux_chdir_args *args) 663 { 664 char *path; 665 int error; 666 667 LCONVPATHEXIST(td, args->path, &path); 668 669 #ifdef DEBUG 670 if (ldebug(chdir)) 671 printf(ARGS(chdir, "%s"), path); 672 #endif 673 error = kern_chdir(td, path, UIO_SYSSPACE); 674 LFREEPATH(path); 675 return (error); 676 } 677 678 int 679 linux_chmod(struct thread *td, struct linux_chmod_args *args) 680 { 681 char *path; 682 int error; 683 684 LCONVPATHEXIST(td, args->path, &path); 685 686 #ifdef DEBUG 687 if (ldebug(chmod)) 688 printf(ARGS(chmod, "%s, %d"), path, args->mode); 689 #endif 690 error = kern_chmod(td, path, UIO_SYSSPACE, args->mode); 691 LFREEPATH(path); 692 return (error); 693 } 694 695 int 696 linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args) 697 { 698 char *path; 699 int error, dfd; 700 701 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 702 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 703 704 #ifdef DEBUG 705 if (ldebug(fchmodat)) 706 printf(ARGS(fchmodat, "%s, %d"), path, args->mode); 707 #endif 708 709 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0); 710 LFREEPATH(path); 711 return (error); 712 } 713 714 int 715 linux_mkdir(struct thread *td, struct linux_mkdir_args *args) 716 { 717 char *path; 718 int error; 719 720 LCONVPATHCREAT(td, args->path, &path); 721 722 #ifdef DEBUG 723 if (ldebug(mkdir)) 724 printf(ARGS(mkdir, "%s, %d"), path, args->mode); 725 #endif 726 error = kern_mkdir(td, path, UIO_SYSSPACE, args->mode); 727 LFREEPATH(path); 728 return (error); 729 } 730 731 int 732 linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args) 733 { 734 char *path; 735 int error, dfd; 736 737 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 738 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd); 739 740 #ifdef DEBUG 741 if (ldebug(mkdirat)) 742 printf(ARGS(mkdirat, "%s, %d"), path, args->mode); 743 #endif 744 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode); 745 LFREEPATH(path); 746 return (error); 747 } 748 749 int 750 linux_rmdir(struct thread *td, struct linux_rmdir_args *args) 751 { 752 char *path; 753 int error; 754 755 LCONVPATHEXIST(td, args->path, &path); 756 757 #ifdef DEBUG 758 if (ldebug(rmdir)) 759 printf(ARGS(rmdir, "%s"), path); 760 #endif 761 error = kern_rmdir(td, path, UIO_SYSSPACE); 762 LFREEPATH(path); 763 return (error); 764 } 765 766 int 767 linux_rename(struct thread *td, struct linux_rename_args *args) 768 { 769 char *from, *to; 770 int error; 771 772 LCONVPATHEXIST(td, args->from, &from); 773 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 774 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 775 if (to == NULL) { 776 LFREEPATH(from); 777 return (error); 778 } 779 780 #ifdef DEBUG 781 if (ldebug(rename)) 782 printf(ARGS(rename, "%s, %s"), from, to); 783 #endif 784 error = kern_rename(td, from, to, UIO_SYSSPACE); 785 LFREEPATH(from); 786 LFREEPATH(to); 787 return (error); 788 } 789 790 int 791 linux_renameat(struct thread *td, struct linux_renameat_args *args) 792 { 793 char *from, *to; 794 int error, olddfd, newdfd; 795 796 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 797 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 798 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd); 799 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 800 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 801 if (to == NULL) { 802 LFREEPATH(from); 803 return (error); 804 } 805 806 #ifdef DEBUG 807 if (ldebug(renameat)) 808 printf(ARGS(renameat, "%s, %s"), from, to); 809 #endif 810 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE); 811 LFREEPATH(from); 812 LFREEPATH(to); 813 return (error); 814 } 815 816 int 817 linux_symlink(struct thread *td, struct linux_symlink_args *args) 818 { 819 char *path, *to; 820 int error; 821 822 LCONVPATHEXIST(td, args->path, &path); 823 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 824 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 825 if (to == NULL) { 826 LFREEPATH(path); 827 return (error); 828 } 829 830 #ifdef DEBUG 831 if (ldebug(symlink)) 832 printf(ARGS(symlink, "%s, %s"), path, to); 833 #endif 834 error = kern_symlink(td, path, to, UIO_SYSSPACE); 835 LFREEPATH(path); 836 LFREEPATH(to); 837 return (error); 838 } 839 840 int 841 linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args) 842 { 843 char *path, *to; 844 int error, dfd; 845 846 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 847 LCONVPATHEXIST_AT(td, args->oldname, &path, dfd); 848 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 849 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd); 850 if (to == NULL) { 851 LFREEPATH(path); 852 return (error); 853 } 854 855 #ifdef DEBUG 856 if (ldebug(symlinkat)) 857 printf(ARGS(symlinkat, "%s, %s"), path, to); 858 #endif 859 860 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE); 861 LFREEPATH(path); 862 LFREEPATH(to); 863 return (error); 864 } 865 866 int 867 linux_readlink(struct thread *td, struct linux_readlink_args *args) 868 { 869 char *name; 870 int error; 871 872 LCONVPATHEXIST(td, args->name, &name); 873 874 #ifdef DEBUG 875 if (ldebug(readlink)) 876 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf, 877 args->count); 878 #endif 879 error = kern_readlink(td, name, UIO_SYSSPACE, args->buf, UIO_USERSPACE, 880 args->count); 881 LFREEPATH(name); 882 return (error); 883 } 884 885 int 886 linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args) 887 { 888 char *name; 889 int error, dfd; 890 891 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 892 LCONVPATHEXIST_AT(td, args->path, &name, dfd); 893 894 #ifdef DEBUG 895 if (ldebug(readlinkat)) 896 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf, 897 args->bufsiz); 898 #endif 899 900 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf, 901 UIO_USERSPACE, args->bufsiz); 902 LFREEPATH(name); 903 return (error); 904 } 905 906 int 907 linux_truncate(struct thread *td, struct linux_truncate_args *args) 908 { 909 char *path; 910 int error; 911 912 LCONVPATHEXIST(td, args->path, &path); 913 914 #ifdef DEBUG 915 if (ldebug(truncate)) 916 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length); 917 #endif 918 919 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 920 LFREEPATH(path); 921 return (error); 922 } 923 924 int 925 linux_truncate64(struct thread *td, struct linux_truncate64_args *args) 926 { 927 char *path; 928 int error; 929 930 LCONVPATHEXIST(td, args->path, &path); 931 932 #ifdef DEBUG 933 if (ldebug(truncate64)) 934 printf(ARGS(truncate64, "%s, %jd"), path, args->length); 935 #endif 936 937 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 938 LFREEPATH(path); 939 return (error); 940 } 941 int 942 linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args) 943 { 944 struct ftruncate_args /* { 945 int fd; 946 int pad; 947 off_t length; 948 } */ nuap; 949 950 nuap.fd = args->fd; 951 nuap.length = args->length; 952 return (ftruncate(td, &nuap)); 953 } 954 955 int 956 linux_link(struct thread *td, struct linux_link_args *args) 957 { 958 char *path, *to; 959 int error; 960 961 LCONVPATHEXIST(td, args->path, &path); 962 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 963 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 964 if (to == NULL) { 965 LFREEPATH(path); 966 return (error); 967 } 968 969 #ifdef DEBUG 970 if (ldebug(link)) 971 printf(ARGS(link, "%s, %s"), path, to); 972 #endif 973 error = kern_link(td, path, to, UIO_SYSSPACE); 974 LFREEPATH(path); 975 LFREEPATH(to); 976 return (error); 977 } 978 979 int 980 linux_linkat(struct thread *td, struct linux_linkat_args *args) 981 { 982 char *path, *to; 983 int error, olddfd, newdfd; 984 985 /* 986 * They really introduced flags argument which is forbidden to 987 * use. 988 */ 989 if (args->flags != 0) 990 return (EINVAL); 991 992 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 993 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 994 LCONVPATHEXIST_AT(td, args->oldname, &path, olddfd); 995 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 996 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 997 if (to == NULL) { 998 LFREEPATH(path); 999 return (error); 1000 } 1001 1002 #ifdef DEBUG 1003 if (ldebug(linkat)) 1004 printf(ARGS(linkat, "%i, %s, %i, %s, %i"), args->olddfd, path, 1005 args->newdfd, to, args->flags); 1006 #endif 1007 1008 error = kern_linkat(td, olddfd, newdfd, path, to, UIO_SYSSPACE, FOLLOW); 1009 LFREEPATH(path); 1010 LFREEPATH(to); 1011 return (error); 1012 } 1013 1014 int 1015 linux_fdatasync(td, uap) 1016 struct thread *td; 1017 struct linux_fdatasync_args *uap; 1018 { 1019 struct fsync_args bsd; 1020 1021 bsd.fd = uap->fd; 1022 return fsync(td, &bsd); 1023 } 1024 1025 int 1026 linux_pread(td, uap) 1027 struct thread *td; 1028 struct linux_pread_args *uap; 1029 { 1030 struct pread_args bsd; 1031 struct vnode *vp; 1032 int error; 1033 1034 bsd.fd = uap->fd; 1035 bsd.buf = uap->buf; 1036 bsd.nbyte = uap->nbyte; 1037 bsd.offset = uap->offset; 1038 1039 error = pread(td, &bsd); 1040 1041 if (error == 0) { 1042 /* This seems to violate POSIX but linux does it */ 1043 if ((error = fgetvp(td, uap->fd, &vp)) != 0) 1044 return (error); 1045 if (vp->v_type == VDIR) { 1046 vrele(vp); 1047 return (EISDIR); 1048 } 1049 vrele(vp); 1050 } 1051 1052 return (error); 1053 } 1054 1055 int 1056 linux_pwrite(td, uap) 1057 struct thread *td; 1058 struct linux_pwrite_args *uap; 1059 { 1060 struct pwrite_args bsd; 1061 1062 bsd.fd = uap->fd; 1063 bsd.buf = uap->buf; 1064 bsd.nbyte = uap->nbyte; 1065 bsd.offset = uap->offset; 1066 return pwrite(td, &bsd); 1067 } 1068 1069 int 1070 linux_mount(struct thread *td, struct linux_mount_args *args) 1071 { 1072 struct ufs_args ufs; 1073 char fstypename[MFSNAMELEN]; 1074 char mntonname[MNAMELEN], mntfromname[MNAMELEN]; 1075 int error; 1076 int fsflags; 1077 void *fsdata; 1078 1079 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1, 1080 NULL); 1081 if (error) 1082 return (error); 1083 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL); 1084 if (error) 1085 return (error); 1086 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL); 1087 if (error) 1088 return (error); 1089 1090 #ifdef DEBUG 1091 if (ldebug(mount)) 1092 printf(ARGS(mount, "%s, %s, %s"), 1093 fstypename, mntfromname, mntonname); 1094 #endif 1095 1096 if (strcmp(fstypename, "ext2") == 0) { 1097 strcpy(fstypename, "ext2fs"); 1098 fsdata = &ufs; 1099 ufs.fspec = mntfromname; 1100 #define DEFAULT_ROOTID -2 1101 ufs.export.ex_root = DEFAULT_ROOTID; 1102 ufs.export.ex_flags = 1103 args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0; 1104 } else if (strcmp(fstypename, "proc") == 0) { 1105 strcpy(fstypename, "linprocfs"); 1106 fsdata = NULL; 1107 } else if (strcmp(fstypename, "vfat") == 0) { 1108 strcpy(fstypename, "msdosfs"); 1109 fsdata = NULL; 1110 } else { 1111 return (ENODEV); 1112 } 1113 1114 fsflags = 0; 1115 1116 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) { 1117 /* 1118 * Linux SYNC flag is not included; the closest equivalent 1119 * FreeBSD has is !ASYNC, which is our default. 1120 */ 1121 if (args->rwflag & LINUX_MS_RDONLY) 1122 fsflags |= MNT_RDONLY; 1123 if (args->rwflag & LINUX_MS_NOSUID) 1124 fsflags |= MNT_NOSUID; 1125 if (args->rwflag & LINUX_MS_NOEXEC) 1126 fsflags |= MNT_NOEXEC; 1127 if (args->rwflag & LINUX_MS_REMOUNT) 1128 fsflags |= MNT_UPDATE; 1129 } 1130 1131 if (strcmp(fstypename, "linprocfs") == 0) { 1132 error = kernel_vmount(fsflags, 1133 "fstype", fstypename, 1134 "fspath", mntonname, 1135 NULL); 1136 } else if (strcmp(fstypename, "msdosfs") == 0) { 1137 error = kernel_vmount(fsflags, 1138 "fstype", fstypename, 1139 "fspath", mntonname, 1140 "from", mntfromname, 1141 NULL); 1142 } else 1143 error = EOPNOTSUPP; 1144 return (error); 1145 } 1146 1147 int 1148 linux_oldumount(struct thread *td, struct linux_oldumount_args *args) 1149 { 1150 struct linux_umount_args args2; 1151 1152 args2.path = args->path; 1153 args2.flags = 0; 1154 return (linux_umount(td, &args2)); 1155 } 1156 1157 int 1158 linux_umount(struct thread *td, struct linux_umount_args *args) 1159 { 1160 struct unmount_args bsd; 1161 1162 bsd.path = args->path; 1163 bsd.flags = args->flags; /* XXX correct? */ 1164 return (unmount(td, &bsd)); 1165 } 1166 1167 /* 1168 * fcntl family of syscalls 1169 */ 1170 1171 struct l_flock { 1172 l_short l_type; 1173 l_short l_whence; 1174 l_off_t l_start; 1175 l_off_t l_len; 1176 l_pid_t l_pid; 1177 } 1178 #if defined(__amd64__) && defined(COMPAT_LINUX32) 1179 __packed 1180 #endif 1181 ; 1182 1183 static void 1184 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock) 1185 { 1186 switch (linux_flock->l_type) { 1187 case LINUX_F_RDLCK: 1188 bsd_flock->l_type = F_RDLCK; 1189 break; 1190 case LINUX_F_WRLCK: 1191 bsd_flock->l_type = F_WRLCK; 1192 break; 1193 case LINUX_F_UNLCK: 1194 bsd_flock->l_type = F_UNLCK; 1195 break; 1196 default: 1197 bsd_flock->l_type = -1; 1198 break; 1199 } 1200 bsd_flock->l_whence = linux_flock->l_whence; 1201 bsd_flock->l_start = (off_t)linux_flock->l_start; 1202 bsd_flock->l_len = (off_t)linux_flock->l_len; 1203 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1204 bsd_flock->l_sysid = 0; 1205 } 1206 1207 static void 1208 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock) 1209 { 1210 switch (bsd_flock->l_type) { 1211 case F_RDLCK: 1212 linux_flock->l_type = LINUX_F_RDLCK; 1213 break; 1214 case F_WRLCK: 1215 linux_flock->l_type = LINUX_F_WRLCK; 1216 break; 1217 case F_UNLCK: 1218 linux_flock->l_type = LINUX_F_UNLCK; 1219 break; 1220 } 1221 linux_flock->l_whence = bsd_flock->l_whence; 1222 linux_flock->l_start = (l_off_t)bsd_flock->l_start; 1223 linux_flock->l_len = (l_off_t)bsd_flock->l_len; 1224 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1225 } 1226 1227 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1228 struct l_flock64 { 1229 l_short l_type; 1230 l_short l_whence; 1231 l_loff_t l_start; 1232 l_loff_t l_len; 1233 l_pid_t l_pid; 1234 } 1235 #if defined(__amd64__) && defined(COMPAT_LINUX32) 1236 __packed 1237 #endif 1238 ; 1239 1240 static void 1241 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock) 1242 { 1243 switch (linux_flock->l_type) { 1244 case LINUX_F_RDLCK: 1245 bsd_flock->l_type = F_RDLCK; 1246 break; 1247 case LINUX_F_WRLCK: 1248 bsd_flock->l_type = F_WRLCK; 1249 break; 1250 case LINUX_F_UNLCK: 1251 bsd_flock->l_type = F_UNLCK; 1252 break; 1253 default: 1254 bsd_flock->l_type = -1; 1255 break; 1256 } 1257 bsd_flock->l_whence = linux_flock->l_whence; 1258 bsd_flock->l_start = (off_t)linux_flock->l_start; 1259 bsd_flock->l_len = (off_t)linux_flock->l_len; 1260 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1261 bsd_flock->l_sysid = 0; 1262 } 1263 1264 static void 1265 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock) 1266 { 1267 switch (bsd_flock->l_type) { 1268 case F_RDLCK: 1269 linux_flock->l_type = LINUX_F_RDLCK; 1270 break; 1271 case F_WRLCK: 1272 linux_flock->l_type = LINUX_F_WRLCK; 1273 break; 1274 case F_UNLCK: 1275 linux_flock->l_type = LINUX_F_UNLCK; 1276 break; 1277 } 1278 linux_flock->l_whence = bsd_flock->l_whence; 1279 linux_flock->l_start = (l_loff_t)bsd_flock->l_start; 1280 linux_flock->l_len = (l_loff_t)bsd_flock->l_len; 1281 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1282 } 1283 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1284 1285 static int 1286 fcntl_common(struct thread *td, struct linux_fcntl64_args *args) 1287 { 1288 struct l_flock linux_flock; 1289 struct flock bsd_flock; 1290 struct file *fp; 1291 long arg; 1292 int error, result; 1293 1294 switch (args->cmd) { 1295 case LINUX_F_DUPFD: 1296 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg)); 1297 1298 case LINUX_F_GETFD: 1299 return (kern_fcntl(td, args->fd, F_GETFD, 0)); 1300 1301 case LINUX_F_SETFD: 1302 return (kern_fcntl(td, args->fd, F_SETFD, args->arg)); 1303 1304 case LINUX_F_GETFL: 1305 error = kern_fcntl(td, args->fd, F_GETFL, 0); 1306 result = td->td_retval[0]; 1307 td->td_retval[0] = 0; 1308 if (result & O_RDONLY) 1309 td->td_retval[0] |= LINUX_O_RDONLY; 1310 if (result & O_WRONLY) 1311 td->td_retval[0] |= LINUX_O_WRONLY; 1312 if (result & O_RDWR) 1313 td->td_retval[0] |= LINUX_O_RDWR; 1314 if (result & O_NDELAY) 1315 td->td_retval[0] |= LINUX_O_NONBLOCK; 1316 if (result & O_APPEND) 1317 td->td_retval[0] |= LINUX_O_APPEND; 1318 if (result & O_FSYNC) 1319 td->td_retval[0] |= LINUX_O_SYNC; 1320 if (result & O_ASYNC) 1321 td->td_retval[0] |= LINUX_FASYNC; 1322 #ifdef LINUX_O_NOFOLLOW 1323 if (result & O_NOFOLLOW) 1324 td->td_retval[0] |= LINUX_O_NOFOLLOW; 1325 #endif 1326 #ifdef LINUX_O_DIRECT 1327 if (result & O_DIRECT) 1328 td->td_retval[0] |= LINUX_O_DIRECT; 1329 #endif 1330 return (error); 1331 1332 case LINUX_F_SETFL: 1333 arg = 0; 1334 if (args->arg & LINUX_O_NDELAY) 1335 arg |= O_NONBLOCK; 1336 if (args->arg & LINUX_O_APPEND) 1337 arg |= O_APPEND; 1338 if (args->arg & LINUX_O_SYNC) 1339 arg |= O_FSYNC; 1340 if (args->arg & LINUX_FASYNC) 1341 arg |= O_ASYNC; 1342 #ifdef LINUX_O_NOFOLLOW 1343 if (args->arg & LINUX_O_NOFOLLOW) 1344 arg |= O_NOFOLLOW; 1345 #endif 1346 #ifdef LINUX_O_DIRECT 1347 if (args->arg & LINUX_O_DIRECT) 1348 arg |= O_DIRECT; 1349 #endif 1350 return (kern_fcntl(td, args->fd, F_SETFL, arg)); 1351 1352 case LINUX_F_GETLK: 1353 error = copyin((void *)args->arg, &linux_flock, 1354 sizeof(linux_flock)); 1355 if (error) 1356 return (error); 1357 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1358 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1359 if (error) 1360 return (error); 1361 bsd_to_linux_flock(&bsd_flock, &linux_flock); 1362 return (copyout(&linux_flock, (void *)args->arg, 1363 sizeof(linux_flock))); 1364 1365 case LINUX_F_SETLK: 1366 error = copyin((void *)args->arg, &linux_flock, 1367 sizeof(linux_flock)); 1368 if (error) 1369 return (error); 1370 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1371 return (kern_fcntl(td, args->fd, F_SETLK, 1372 (intptr_t)&bsd_flock)); 1373 1374 case LINUX_F_SETLKW: 1375 error = copyin((void *)args->arg, &linux_flock, 1376 sizeof(linux_flock)); 1377 if (error) 1378 return (error); 1379 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1380 return (kern_fcntl(td, args->fd, F_SETLKW, 1381 (intptr_t)&bsd_flock)); 1382 1383 case LINUX_F_GETOWN: 1384 return (kern_fcntl(td, args->fd, F_GETOWN, 0)); 1385 1386 case LINUX_F_SETOWN: 1387 /* 1388 * XXX some Linux applications depend on F_SETOWN having no 1389 * significant effect for pipes (SIGIO is not delivered for 1390 * pipes under Linux-2.2.35 at least). 1391 */ 1392 error = fget(td, args->fd, &fp); 1393 if (error) 1394 return (error); 1395 if (fp->f_type == DTYPE_PIPE) { 1396 fdrop(fp, td); 1397 return (EINVAL); 1398 } 1399 fdrop(fp, td); 1400 1401 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg)); 1402 } 1403 1404 return (EINVAL); 1405 } 1406 1407 int 1408 linux_fcntl(struct thread *td, struct linux_fcntl_args *args) 1409 { 1410 struct linux_fcntl64_args args64; 1411 1412 #ifdef DEBUG 1413 if (ldebug(fcntl)) 1414 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd); 1415 #endif 1416 1417 args64.fd = args->fd; 1418 args64.cmd = args->cmd; 1419 args64.arg = args->arg; 1420 return (fcntl_common(td, &args64)); 1421 } 1422 1423 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1424 int 1425 linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args) 1426 { 1427 struct l_flock64 linux_flock; 1428 struct flock bsd_flock; 1429 int error; 1430 1431 #ifdef DEBUG 1432 if (ldebug(fcntl64)) 1433 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd); 1434 #endif 1435 1436 switch (args->cmd) { 1437 case LINUX_F_GETLK64: 1438 error = copyin((void *)args->arg, &linux_flock, 1439 sizeof(linux_flock)); 1440 if (error) 1441 return (error); 1442 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1443 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1444 if (error) 1445 return (error); 1446 bsd_to_linux_flock64(&bsd_flock, &linux_flock); 1447 return (copyout(&linux_flock, (void *)args->arg, 1448 sizeof(linux_flock))); 1449 1450 case LINUX_F_SETLK64: 1451 error = copyin((void *)args->arg, &linux_flock, 1452 sizeof(linux_flock)); 1453 if (error) 1454 return (error); 1455 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1456 return (kern_fcntl(td, args->fd, F_SETLK, 1457 (intptr_t)&bsd_flock)); 1458 1459 case LINUX_F_SETLKW64: 1460 error = copyin((void *)args->arg, &linux_flock, 1461 sizeof(linux_flock)); 1462 if (error) 1463 return (error); 1464 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1465 return (kern_fcntl(td, args->fd, F_SETLKW, 1466 (intptr_t)&bsd_flock)); 1467 } 1468 1469 return (fcntl_common(td, args)); 1470 } 1471 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1472 1473 int 1474 linux_chown(struct thread *td, struct linux_chown_args *args) 1475 { 1476 char *path; 1477 int error; 1478 1479 LCONVPATHEXIST(td, args->path, &path); 1480 1481 #ifdef DEBUG 1482 if (ldebug(chown)) 1483 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid); 1484 #endif 1485 error = kern_chown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1486 LFREEPATH(path); 1487 return (error); 1488 } 1489 1490 int 1491 linux_fchownat(struct thread *td, struct linux_fchownat_args *args) 1492 { 1493 char *path; 1494 int error, dfd, follow; 1495 1496 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW) 1497 return (EINVAL); 1498 1499 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 1500 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 1501 1502 #ifdef DEBUG 1503 if (ldebug(fchownat)) 1504 printf(ARGS(fchownat, "%s, %d, %d"), path, args->uid, args->gid); 1505 #endif 1506 1507 follow = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 : 1508 AT_SYMLINK_NOFOLLOW; 1509 error = kern_fchownat(td, dfd, path, UIO_SYSSPACE, args->uid, args->gid, 1510 follow); 1511 LFREEPATH(path); 1512 return (error); 1513 } 1514 1515 int 1516 linux_lchown(struct thread *td, struct linux_lchown_args *args) 1517 { 1518 char *path; 1519 int error; 1520 1521 LCONVPATHEXIST(td, args->path, &path); 1522 1523 #ifdef DEBUG 1524 if (ldebug(lchown)) 1525 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid); 1526 #endif 1527 error = kern_lchown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1528 LFREEPATH(path); 1529 return (error); 1530 } 1531