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/capability.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/malloc.h> 44 #include <sys/mount.h> 45 #include <sys/mutex.h> 46 #include <sys/namei.h> 47 #include <sys/proc.h> 48 #include <sys/stat.h> 49 #include <sys/sx.h> 50 #include <sys/syscallsubr.h> 51 #include <sys/sysproto.h> 52 #include <sys/tty.h> 53 #include <sys/unistd.h> 54 #include <sys/vnode.h> 55 56 #include <security/mac/mac_framework.h> 57 58 #include <ufs/ufs/extattr.h> 59 #include <ufs/ufs/quota.h> 60 #include <ufs/ufs/ufsmount.h> 61 62 #ifdef COMPAT_LINUX32 63 #include <machine/../linux32/linux.h> 64 #include <machine/../linux32/linux32_proto.h> 65 #else 66 #include <machine/../linux/linux.h> 67 #include <machine/../linux/linux_proto.h> 68 #endif 69 #include <compat/linux/linux_util.h> 70 #include <compat/linux/linux_file.h> 71 72 int 73 linux_creat(struct thread *td, struct linux_creat_args *args) 74 { 75 char *path; 76 int error; 77 78 LCONVPATHEXIST(td, args->path, &path); 79 80 #ifdef DEBUG 81 if (ldebug(creat)) 82 printf(ARGS(creat, "%s, %d"), path, args->mode); 83 #endif 84 error = kern_open(td, path, UIO_SYSSPACE, O_WRONLY | O_CREAT | O_TRUNC, 85 args->mode); 86 LFREEPATH(path); 87 return (error); 88 } 89 90 91 static int 92 linux_common_open(struct thread *td, int dirfd, char *path, int l_flags, int mode) 93 { 94 struct proc *p = td->td_proc; 95 struct file *fp; 96 int fd; 97 int bsd_flags, error; 98 99 bsd_flags = 0; 100 switch (l_flags & LINUX_O_ACCMODE) { 101 case LINUX_O_WRONLY: 102 bsd_flags |= O_WRONLY; 103 break; 104 case LINUX_O_RDWR: 105 bsd_flags |= O_RDWR; 106 break; 107 default: 108 bsd_flags |= O_RDONLY; 109 } 110 if (l_flags & LINUX_O_NDELAY) 111 bsd_flags |= O_NONBLOCK; 112 if (l_flags & LINUX_O_APPEND) 113 bsd_flags |= O_APPEND; 114 if (l_flags & LINUX_O_SYNC) 115 bsd_flags |= O_FSYNC; 116 if (l_flags & LINUX_O_NONBLOCK) 117 bsd_flags |= O_NONBLOCK; 118 if (l_flags & LINUX_FASYNC) 119 bsd_flags |= O_ASYNC; 120 if (l_flags & LINUX_O_CREAT) 121 bsd_flags |= O_CREAT; 122 if (l_flags & LINUX_O_TRUNC) 123 bsd_flags |= O_TRUNC; 124 if (l_flags & LINUX_O_EXCL) 125 bsd_flags |= O_EXCL; 126 if (l_flags & LINUX_O_NOCTTY) 127 bsd_flags |= O_NOCTTY; 128 if (l_flags & LINUX_O_DIRECT) 129 bsd_flags |= O_DIRECT; 130 if (l_flags & LINUX_O_NOFOLLOW) 131 bsd_flags |= O_NOFOLLOW; 132 if (l_flags & LINUX_O_DIRECTORY) 133 bsd_flags |= O_DIRECTORY; 134 /* XXX LINUX_O_NOATIME: unable to be easily implemented. */ 135 136 error = kern_openat(td, dirfd, path, UIO_SYSSPACE, bsd_flags, mode); 137 138 if (!error) { 139 fd = td->td_retval[0]; 140 /* 141 * XXX In between kern_open() and fget(), another process 142 * having the same filedesc could use that fd without 143 * checking below. 144 */ 145 error = fget(td, fd, CAP_IOCTL, &fp); 146 if (!error) { 147 sx_slock(&proctree_lock); 148 PROC_LOCK(p); 149 if (!(bsd_flags & O_NOCTTY) && 150 SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 151 PROC_UNLOCK(p); 152 sx_unlock(&proctree_lock); 153 if (fp->f_type == DTYPE_VNODE) 154 (void) fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, 155 td->td_ucred, td); 156 } else { 157 PROC_UNLOCK(p); 158 sx_sunlock(&proctree_lock); 159 } 160 fdrop(fp, td); 161 /* 162 * XXX as above, fdrop()/kern_close() pair is racy. 163 */ 164 if (error) 165 kern_close(td, fd); 166 } 167 } 168 169 #ifdef DEBUG 170 if (ldebug(open)) 171 printf(LMSG("open returns error %d"), error); 172 #endif 173 LFREEPATH(path); 174 return (error); 175 } 176 177 int 178 linux_openat(struct thread *td, struct linux_openat_args *args) 179 { 180 char *path; 181 int dfd; 182 183 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 184 if (args->flags & LINUX_O_CREAT) 185 LCONVPATH_AT(td, args->filename, &path, 1, dfd); 186 else 187 LCONVPATH_AT(td, args->filename, &path, 0, dfd); 188 #ifdef DEBUG 189 if (ldebug(openat)) 190 printf(ARGS(openat, "%i, %s, 0x%x, 0x%x"), args->dfd, 191 path, args->flags, args->mode); 192 #endif 193 return (linux_common_open(td, dfd, path, args->flags, args->mode)); 194 } 195 196 int 197 linux_open(struct thread *td, struct linux_open_args *args) 198 { 199 char *path; 200 201 if (args->flags & LINUX_O_CREAT) 202 LCONVPATHCREAT(td, args->path, &path); 203 else 204 LCONVPATHEXIST(td, args->path, &path); 205 206 #ifdef DEBUG 207 if (ldebug(open)) 208 printf(ARGS(open, "%s, 0x%x, 0x%x"), 209 path, args->flags, args->mode); 210 #endif 211 212 return (linux_common_open(td, AT_FDCWD, path, args->flags, args->mode)); 213 } 214 215 int 216 linux_lseek(struct thread *td, struct linux_lseek_args *args) 217 { 218 219 struct lseek_args /* { 220 int fd; 221 int pad; 222 off_t offset; 223 int whence; 224 } */ tmp_args; 225 int error; 226 227 #ifdef DEBUG 228 if (ldebug(lseek)) 229 printf(ARGS(lseek, "%d, %ld, %d"), 230 args->fdes, (long)args->off, args->whence); 231 #endif 232 tmp_args.fd = args->fdes; 233 tmp_args.offset = (off_t)args->off; 234 tmp_args.whence = args->whence; 235 error = sys_lseek(td, &tmp_args); 236 return error; 237 } 238 239 int 240 linux_llseek(struct thread *td, struct linux_llseek_args *args) 241 { 242 struct lseek_args bsd_args; 243 int error; 244 off_t off; 245 246 #ifdef DEBUG 247 if (ldebug(llseek)) 248 printf(ARGS(llseek, "%d, %d:%d, %d"), 249 args->fd, args->ohigh, args->olow, args->whence); 250 #endif 251 off = (args->olow) | (((off_t) args->ohigh) << 32); 252 253 bsd_args.fd = args->fd; 254 bsd_args.offset = off; 255 bsd_args.whence = args->whence; 256 257 if ((error = sys_lseek(td, &bsd_args))) 258 return error; 259 260 if ((error = copyout(td->td_retval, args->res, sizeof (off_t)))) 261 return error; 262 263 td->td_retval[0] = 0; 264 return 0; 265 } 266 267 int 268 linux_readdir(struct thread *td, struct linux_readdir_args *args) 269 { 270 struct linux_getdents_args lda; 271 272 lda.fd = args->fd; 273 lda.dent = args->dent; 274 lda.count = 1; 275 return linux_getdents(td, &lda); 276 } 277 278 /* 279 * Note that linux_getdents(2) and linux_getdents64(2) have the same 280 * arguments. They only differ in the definition of struct dirent they 281 * operate on. We use this to common the code, with the exception of 282 * accessing struct dirent. Note that linux_readdir(2) is implemented 283 * by means of linux_getdents(2). In this case we never operate on 284 * struct dirent64 and thus don't need to handle it... 285 */ 286 287 struct l_dirent { 288 l_ulong d_ino; 289 l_off_t d_off; 290 l_ushort d_reclen; 291 char d_name[LINUX_NAME_MAX + 1]; 292 }; 293 294 struct l_dirent64 { 295 uint64_t d_ino; 296 int64_t d_off; 297 l_ushort d_reclen; 298 u_char d_type; 299 char d_name[LINUX_NAME_MAX + 1]; 300 }; 301 302 /* 303 * Linux uses the last byte in the dirent buffer to store d_type, 304 * at least glibc-2.7 requires it. That is why l_dirent is padded with 2 bytes. 305 */ 306 #define LINUX_RECLEN(namlen) \ 307 roundup((offsetof(struct l_dirent, d_name) + (namlen) + 2), \ 308 sizeof(l_ulong)) 309 310 #define LINUX_RECLEN64(namlen) \ 311 roundup((offsetof(struct l_dirent64, d_name) + (namlen) + 1), \ 312 sizeof(uint64_t)) 313 314 #define LINUX_MAXRECLEN max(LINUX_RECLEN(LINUX_NAME_MAX), \ 315 LINUX_RECLEN64(LINUX_NAME_MAX)) 316 #define LINUX_DIRBLKSIZ 512 317 318 static int 319 getdents_common(struct thread *td, struct linux_getdents64_args *args, 320 int is64bit) 321 { 322 struct dirent *bdp; 323 struct vnode *vp; 324 caddr_t inp, buf; /* BSD-format */ 325 int len, reclen; /* BSD-format */ 326 caddr_t outp; /* Linux-format */ 327 int resid, linuxreclen=0; /* Linux-format */ 328 caddr_t lbuf; /* Linux-format */ 329 struct file *fp; 330 struct uio auio; 331 struct iovec aiov; 332 off_t off; 333 struct l_dirent *linux_dirent; 334 struct l_dirent64 *linux_dirent64; 335 int buflen, error, eofflag, nbytes, justone; 336 u_long *cookies = NULL, *cookiep; 337 int ncookies, vfslocked; 338 339 nbytes = args->count; 340 if (nbytes == 1) { 341 /* readdir(2) case. Always struct dirent. */ 342 if (is64bit) 343 return (EINVAL); 344 nbytes = sizeof(*linux_dirent); 345 justone = 1; 346 } else 347 justone = 0; 348 349 if ((error = getvnode(td->td_proc->p_fd, args->fd, CAP_READ, &fp)) != 0) 350 return (error); 351 352 if ((fp->f_flag & FREAD) == 0) { 353 fdrop(fp, td); 354 return (EBADF); 355 } 356 357 vp = fp->f_vnode; 358 vfslocked = VFS_LOCK_GIANT(vp->v_mount); 359 if (vp->v_type != VDIR) { 360 VFS_UNLOCK_GIANT(vfslocked); 361 fdrop(fp, td); 362 return (EINVAL); 363 } 364 365 off = fp->f_offset; 366 367 buflen = max(LINUX_DIRBLKSIZ, nbytes); 368 buflen = min(buflen, MAXBSIZE); 369 buf = malloc(buflen, M_TEMP, M_WAITOK); 370 lbuf = malloc(LINUX_MAXRECLEN, M_TEMP, M_WAITOK | M_ZERO); 371 vn_lock(vp, LK_SHARED | LK_RETRY); 372 373 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 nbytes = resid; 511 goto eof; 512 } 513 514 fp->f_offset = off; 515 if (justone) 516 nbytes = resid + linuxreclen; 517 518 eof: 519 td->td_retval[0] = nbytes - resid; 520 521 out: 522 if (cookies) 523 free(cookies, M_TEMP); 524 525 VOP_UNLOCK(vp, 0); 526 VFS_UNLOCK_GIANT(vfslocked); 527 fdrop(fp, td); 528 free(buf, M_TEMP); 529 free(lbuf, M_TEMP); 530 return (error); 531 } 532 533 int 534 linux_getdents(struct thread *td, struct linux_getdents_args *args) 535 { 536 537 #ifdef DEBUG 538 if (ldebug(getdents)) 539 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count); 540 #endif 541 542 return (getdents_common(td, (struct linux_getdents64_args*)args, 0)); 543 } 544 545 int 546 linux_getdents64(struct thread *td, struct linux_getdents64_args *args) 547 { 548 549 #ifdef DEBUG 550 if (ldebug(getdents64)) 551 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count); 552 #endif 553 554 return (getdents_common(td, args, 1)); 555 } 556 557 /* 558 * These exist mainly for hooks for doing /compat/linux translation. 559 */ 560 561 int 562 linux_access(struct thread *td, struct linux_access_args *args) 563 { 564 char *path; 565 int error; 566 567 /* linux convention */ 568 if (args->flags & ~(F_OK | X_OK | W_OK | R_OK)) 569 return (EINVAL); 570 571 LCONVPATHEXIST(td, args->path, &path); 572 573 #ifdef DEBUG 574 if (ldebug(access)) 575 printf(ARGS(access, "%s, %d"), path, args->flags); 576 #endif 577 error = kern_access(td, path, UIO_SYSSPACE, args->flags); 578 LFREEPATH(path); 579 580 return (error); 581 } 582 583 int 584 linux_faccessat(struct thread *td, struct linux_faccessat_args *args) 585 { 586 char *path; 587 int error, dfd; 588 589 /* linux convention */ 590 if (args->mode & ~(F_OK | X_OK | W_OK | R_OK)) 591 return (EINVAL); 592 593 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 594 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 595 596 #ifdef DEBUG 597 if (ldebug(access)) 598 printf(ARGS(access, "%s, %d"), path, args->mode); 599 #endif 600 601 error = kern_accessat(td, dfd, path, UIO_SYSSPACE, 0 /* XXX */, 602 args->mode); 603 LFREEPATH(path); 604 605 return (error); 606 } 607 608 int 609 linux_unlink(struct thread *td, struct linux_unlink_args *args) 610 { 611 char *path; 612 int error; 613 struct stat st; 614 615 LCONVPATHEXIST(td, args->path, &path); 616 617 #ifdef DEBUG 618 if (ldebug(unlink)) 619 printf(ARGS(unlink, "%s"), path); 620 #endif 621 622 error = kern_unlink(td, path, UIO_SYSSPACE); 623 if (error == EPERM) 624 /* Introduce POSIX noncompliant behaviour of Linux */ 625 if (kern_stat(td, path, UIO_SYSSPACE, &st) == 0) 626 if (S_ISDIR(st.st_mode)) 627 error = EISDIR; 628 LFREEPATH(path); 629 return (error); 630 } 631 632 int 633 linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args) 634 { 635 char *path; 636 int error, dfd; 637 struct stat st; 638 639 if (args->flag & ~LINUX_AT_REMOVEDIR) 640 return (EINVAL); 641 642 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 643 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); 644 645 #ifdef DEBUG 646 if (ldebug(unlinkat)) 647 printf(ARGS(unlinkat, "%s"), path); 648 #endif 649 650 if (args->flag & LINUX_AT_REMOVEDIR) 651 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE); 652 else 653 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE, 0); 654 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) { 655 /* Introduce POSIX noncompliant behaviour of Linux */ 656 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path, 657 UIO_SYSSPACE, &st) == 0 && S_ISDIR(st.st_mode)) 658 error = EISDIR; 659 } 660 LFREEPATH(path); 661 return (error); 662 } 663 int 664 linux_chdir(struct thread *td, struct linux_chdir_args *args) 665 { 666 char *path; 667 int error; 668 669 LCONVPATHEXIST(td, args->path, &path); 670 671 #ifdef DEBUG 672 if (ldebug(chdir)) 673 printf(ARGS(chdir, "%s"), path); 674 #endif 675 error = kern_chdir(td, path, UIO_SYSSPACE); 676 LFREEPATH(path); 677 return (error); 678 } 679 680 int 681 linux_chmod(struct thread *td, struct linux_chmod_args *args) 682 { 683 char *path; 684 int error; 685 686 LCONVPATHEXIST(td, args->path, &path); 687 688 #ifdef DEBUG 689 if (ldebug(chmod)) 690 printf(ARGS(chmod, "%s, %d"), path, args->mode); 691 #endif 692 error = kern_chmod(td, path, UIO_SYSSPACE, args->mode); 693 LFREEPATH(path); 694 return (error); 695 } 696 697 int 698 linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args) 699 { 700 char *path; 701 int error, dfd; 702 703 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 704 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 705 706 #ifdef DEBUG 707 if (ldebug(fchmodat)) 708 printf(ARGS(fchmodat, "%s, %d"), path, args->mode); 709 #endif 710 711 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0); 712 LFREEPATH(path); 713 return (error); 714 } 715 716 int 717 linux_mkdir(struct thread *td, struct linux_mkdir_args *args) 718 { 719 char *path; 720 int error; 721 722 LCONVPATHCREAT(td, args->path, &path); 723 724 #ifdef DEBUG 725 if (ldebug(mkdir)) 726 printf(ARGS(mkdir, "%s, %d"), path, args->mode); 727 #endif 728 error = kern_mkdir(td, path, UIO_SYSSPACE, args->mode); 729 LFREEPATH(path); 730 return (error); 731 } 732 733 int 734 linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args) 735 { 736 char *path; 737 int error, dfd; 738 739 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 740 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd); 741 742 #ifdef DEBUG 743 if (ldebug(mkdirat)) 744 printf(ARGS(mkdirat, "%s, %d"), path, args->mode); 745 #endif 746 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode); 747 LFREEPATH(path); 748 return (error); 749 } 750 751 int 752 linux_rmdir(struct thread *td, struct linux_rmdir_args *args) 753 { 754 char *path; 755 int error; 756 757 LCONVPATHEXIST(td, args->path, &path); 758 759 #ifdef DEBUG 760 if (ldebug(rmdir)) 761 printf(ARGS(rmdir, "%s"), path); 762 #endif 763 error = kern_rmdir(td, path, UIO_SYSSPACE); 764 LFREEPATH(path); 765 return (error); 766 } 767 768 int 769 linux_rename(struct thread *td, struct linux_rename_args *args) 770 { 771 char *from, *to; 772 int error; 773 774 LCONVPATHEXIST(td, args->from, &from); 775 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 776 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 777 if (to == NULL) { 778 LFREEPATH(from); 779 return (error); 780 } 781 782 #ifdef DEBUG 783 if (ldebug(rename)) 784 printf(ARGS(rename, "%s, %s"), from, to); 785 #endif 786 error = kern_rename(td, from, to, UIO_SYSSPACE); 787 LFREEPATH(from); 788 LFREEPATH(to); 789 return (error); 790 } 791 792 int 793 linux_renameat(struct thread *td, struct linux_renameat_args *args) 794 { 795 char *from, *to; 796 int error, olddfd, newdfd; 797 798 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 799 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 800 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd); 801 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 802 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 803 if (to == NULL) { 804 LFREEPATH(from); 805 return (error); 806 } 807 808 #ifdef DEBUG 809 if (ldebug(renameat)) 810 printf(ARGS(renameat, "%s, %s"), from, to); 811 #endif 812 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE); 813 LFREEPATH(from); 814 LFREEPATH(to); 815 return (error); 816 } 817 818 int 819 linux_symlink(struct thread *td, struct linux_symlink_args *args) 820 { 821 char *path, *to; 822 int error; 823 824 LCONVPATHEXIST(td, args->path, &path); 825 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 826 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 827 if (to == NULL) { 828 LFREEPATH(path); 829 return (error); 830 } 831 832 #ifdef DEBUG 833 if (ldebug(symlink)) 834 printf(ARGS(symlink, "%s, %s"), path, to); 835 #endif 836 error = kern_symlink(td, path, to, UIO_SYSSPACE); 837 LFREEPATH(path); 838 LFREEPATH(to); 839 return (error); 840 } 841 842 int 843 linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args) 844 { 845 char *path, *to; 846 int error, dfd; 847 848 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 849 LCONVPATHEXIST_AT(td, args->oldname, &path, dfd); 850 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 851 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd); 852 if (to == NULL) { 853 LFREEPATH(path); 854 return (error); 855 } 856 857 #ifdef DEBUG 858 if (ldebug(symlinkat)) 859 printf(ARGS(symlinkat, "%s, %s"), path, to); 860 #endif 861 862 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE); 863 LFREEPATH(path); 864 LFREEPATH(to); 865 return (error); 866 } 867 868 int 869 linux_readlink(struct thread *td, struct linux_readlink_args *args) 870 { 871 char *name; 872 int error; 873 874 LCONVPATHEXIST(td, args->name, &name); 875 876 #ifdef DEBUG 877 if (ldebug(readlink)) 878 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf, 879 args->count); 880 #endif 881 error = kern_readlink(td, name, UIO_SYSSPACE, args->buf, UIO_USERSPACE, 882 args->count); 883 LFREEPATH(name); 884 return (error); 885 } 886 887 int 888 linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args) 889 { 890 char *name; 891 int error, dfd; 892 893 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 894 LCONVPATHEXIST_AT(td, args->path, &name, dfd); 895 896 #ifdef DEBUG 897 if (ldebug(readlinkat)) 898 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf, 899 args->bufsiz); 900 #endif 901 902 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf, 903 UIO_USERSPACE, args->bufsiz); 904 LFREEPATH(name); 905 return (error); 906 } 907 908 int 909 linux_truncate(struct thread *td, struct linux_truncate_args *args) 910 { 911 char *path; 912 int error; 913 914 LCONVPATHEXIST(td, args->path, &path); 915 916 #ifdef DEBUG 917 if (ldebug(truncate)) 918 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length); 919 #endif 920 921 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 922 LFREEPATH(path); 923 return (error); 924 } 925 926 int 927 linux_truncate64(struct thread *td, struct linux_truncate64_args *args) 928 { 929 char *path; 930 int error; 931 932 LCONVPATHEXIST(td, args->path, &path); 933 934 #ifdef DEBUG 935 if (ldebug(truncate64)) 936 printf(ARGS(truncate64, "%s, %jd"), path, args->length); 937 #endif 938 939 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 940 LFREEPATH(path); 941 return (error); 942 } 943 int 944 linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args) 945 { 946 struct ftruncate_args /* { 947 int fd; 948 int pad; 949 off_t length; 950 } */ nuap; 951 952 nuap.fd = args->fd; 953 nuap.length = args->length; 954 return (sys_ftruncate(td, &nuap)); 955 } 956 957 int 958 linux_link(struct thread *td, struct linux_link_args *args) 959 { 960 char *path, *to; 961 int error; 962 963 LCONVPATHEXIST(td, args->path, &path); 964 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 965 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 966 if (to == NULL) { 967 LFREEPATH(path); 968 return (error); 969 } 970 971 #ifdef DEBUG 972 if (ldebug(link)) 973 printf(ARGS(link, "%s, %s"), path, to); 974 #endif 975 error = kern_link(td, path, to, UIO_SYSSPACE); 976 LFREEPATH(path); 977 LFREEPATH(to); 978 return (error); 979 } 980 981 int 982 linux_linkat(struct thread *td, struct linux_linkat_args *args) 983 { 984 char *path, *to; 985 int error, olddfd, newdfd; 986 987 /* 988 * They really introduced flags argument which is forbidden to 989 * use. 990 */ 991 if (args->flags != 0) 992 return (EINVAL); 993 994 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 995 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 996 LCONVPATHEXIST_AT(td, args->oldname, &path, olddfd); 997 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 998 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 999 if (to == NULL) { 1000 LFREEPATH(path); 1001 return (error); 1002 } 1003 1004 #ifdef DEBUG 1005 if (ldebug(linkat)) 1006 printf(ARGS(linkat, "%i, %s, %i, %s, %i"), args->olddfd, path, 1007 args->newdfd, to, args->flags); 1008 #endif 1009 1010 error = kern_linkat(td, olddfd, newdfd, path, to, UIO_SYSSPACE, FOLLOW); 1011 LFREEPATH(path); 1012 LFREEPATH(to); 1013 return (error); 1014 } 1015 1016 int 1017 linux_fdatasync(td, uap) 1018 struct thread *td; 1019 struct linux_fdatasync_args *uap; 1020 { 1021 struct fsync_args bsd; 1022 1023 bsd.fd = uap->fd; 1024 return sys_fsync(td, &bsd); 1025 } 1026 1027 int 1028 linux_pread(td, uap) 1029 struct thread *td; 1030 struct linux_pread_args *uap; 1031 { 1032 struct pread_args bsd; 1033 struct vnode *vp; 1034 int error; 1035 1036 bsd.fd = uap->fd; 1037 bsd.buf = uap->buf; 1038 bsd.nbyte = uap->nbyte; 1039 bsd.offset = uap->offset; 1040 1041 error = sys_pread(td, &bsd); 1042 1043 if (error == 0) { 1044 /* This seems to violate POSIX but linux does it */ 1045 if ((error = fgetvp(td, uap->fd, CAP_READ, &vp)) != 0) 1046 return (error); 1047 if (vp->v_type == VDIR) { 1048 vrele(vp); 1049 return (EISDIR); 1050 } 1051 vrele(vp); 1052 } 1053 1054 return (error); 1055 } 1056 1057 int 1058 linux_pwrite(td, uap) 1059 struct thread *td; 1060 struct linux_pwrite_args *uap; 1061 { 1062 struct pwrite_args bsd; 1063 1064 bsd.fd = uap->fd; 1065 bsd.buf = uap->buf; 1066 bsd.nbyte = uap->nbyte; 1067 bsd.offset = uap->offset; 1068 return sys_pwrite(td, &bsd); 1069 } 1070 1071 int 1072 linux_mount(struct thread *td, struct linux_mount_args *args) 1073 { 1074 struct ufs_args ufs; 1075 char fstypename[MFSNAMELEN]; 1076 char mntonname[MNAMELEN], mntfromname[MNAMELEN]; 1077 int error; 1078 int fsflags; 1079 void *fsdata; 1080 1081 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1, 1082 NULL); 1083 if (error) 1084 return (error); 1085 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL); 1086 if (error) 1087 return (error); 1088 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL); 1089 if (error) 1090 return (error); 1091 1092 #ifdef DEBUG 1093 if (ldebug(mount)) 1094 printf(ARGS(mount, "%s, %s, %s"), 1095 fstypename, mntfromname, mntonname); 1096 #endif 1097 1098 if (strcmp(fstypename, "ext2") == 0) { 1099 strcpy(fstypename, "ext2fs"); 1100 fsdata = &ufs; 1101 ufs.fspec = mntfromname; 1102 #define DEFAULT_ROOTID -2 1103 ufs.export.ex_root = DEFAULT_ROOTID; 1104 ufs.export.ex_flags = 1105 args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0; 1106 } else if (strcmp(fstypename, "proc") == 0) { 1107 strcpy(fstypename, "linprocfs"); 1108 fsdata = NULL; 1109 } else if (strcmp(fstypename, "vfat") == 0) { 1110 strcpy(fstypename, "msdosfs"); 1111 fsdata = NULL; 1112 } else { 1113 return (ENODEV); 1114 } 1115 1116 fsflags = 0; 1117 1118 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) { 1119 /* 1120 * Linux SYNC flag is not included; the closest equivalent 1121 * FreeBSD has is !ASYNC, which is our default. 1122 */ 1123 if (args->rwflag & LINUX_MS_RDONLY) 1124 fsflags |= MNT_RDONLY; 1125 if (args->rwflag & LINUX_MS_NOSUID) 1126 fsflags |= MNT_NOSUID; 1127 if (args->rwflag & LINUX_MS_NOEXEC) 1128 fsflags |= MNT_NOEXEC; 1129 if (args->rwflag & LINUX_MS_REMOUNT) 1130 fsflags |= MNT_UPDATE; 1131 } 1132 1133 if (strcmp(fstypename, "linprocfs") == 0) { 1134 error = kernel_vmount(fsflags, 1135 "fstype", fstypename, 1136 "fspath", mntonname, 1137 NULL); 1138 } else if (strcmp(fstypename, "msdosfs") == 0) { 1139 error = kernel_vmount(fsflags, 1140 "fstype", fstypename, 1141 "fspath", mntonname, 1142 "from", mntfromname, 1143 NULL); 1144 } else 1145 error = EOPNOTSUPP; 1146 return (error); 1147 } 1148 1149 int 1150 linux_oldumount(struct thread *td, struct linux_oldumount_args *args) 1151 { 1152 struct linux_umount_args args2; 1153 1154 args2.path = args->path; 1155 args2.flags = 0; 1156 return (linux_umount(td, &args2)); 1157 } 1158 1159 int 1160 linux_umount(struct thread *td, struct linux_umount_args *args) 1161 { 1162 struct unmount_args bsd; 1163 1164 bsd.path = args->path; 1165 bsd.flags = args->flags; /* XXX correct? */ 1166 return (sys_unmount(td, &bsd)); 1167 } 1168 1169 /* 1170 * fcntl family of syscalls 1171 */ 1172 1173 struct l_flock { 1174 l_short l_type; 1175 l_short l_whence; 1176 l_off_t l_start; 1177 l_off_t l_len; 1178 l_pid_t l_pid; 1179 } 1180 #if defined(__amd64__) && defined(COMPAT_LINUX32) 1181 __packed 1182 #endif 1183 ; 1184 1185 static void 1186 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock) 1187 { 1188 switch (linux_flock->l_type) { 1189 case LINUX_F_RDLCK: 1190 bsd_flock->l_type = F_RDLCK; 1191 break; 1192 case LINUX_F_WRLCK: 1193 bsd_flock->l_type = F_WRLCK; 1194 break; 1195 case LINUX_F_UNLCK: 1196 bsd_flock->l_type = F_UNLCK; 1197 break; 1198 default: 1199 bsd_flock->l_type = -1; 1200 break; 1201 } 1202 bsd_flock->l_whence = linux_flock->l_whence; 1203 bsd_flock->l_start = (off_t)linux_flock->l_start; 1204 bsd_flock->l_len = (off_t)linux_flock->l_len; 1205 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1206 bsd_flock->l_sysid = 0; 1207 } 1208 1209 static void 1210 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock) 1211 { 1212 switch (bsd_flock->l_type) { 1213 case F_RDLCK: 1214 linux_flock->l_type = LINUX_F_RDLCK; 1215 break; 1216 case F_WRLCK: 1217 linux_flock->l_type = LINUX_F_WRLCK; 1218 break; 1219 case F_UNLCK: 1220 linux_flock->l_type = LINUX_F_UNLCK; 1221 break; 1222 } 1223 linux_flock->l_whence = bsd_flock->l_whence; 1224 linux_flock->l_start = (l_off_t)bsd_flock->l_start; 1225 linux_flock->l_len = (l_off_t)bsd_flock->l_len; 1226 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1227 } 1228 1229 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1230 struct l_flock64 { 1231 l_short l_type; 1232 l_short l_whence; 1233 l_loff_t l_start; 1234 l_loff_t l_len; 1235 l_pid_t l_pid; 1236 } 1237 #if defined(__amd64__) && defined(COMPAT_LINUX32) 1238 __packed 1239 #endif 1240 ; 1241 1242 static void 1243 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock) 1244 { 1245 switch (linux_flock->l_type) { 1246 case LINUX_F_RDLCK: 1247 bsd_flock->l_type = F_RDLCK; 1248 break; 1249 case LINUX_F_WRLCK: 1250 bsd_flock->l_type = F_WRLCK; 1251 break; 1252 case LINUX_F_UNLCK: 1253 bsd_flock->l_type = F_UNLCK; 1254 break; 1255 default: 1256 bsd_flock->l_type = -1; 1257 break; 1258 } 1259 bsd_flock->l_whence = linux_flock->l_whence; 1260 bsd_flock->l_start = (off_t)linux_flock->l_start; 1261 bsd_flock->l_len = (off_t)linux_flock->l_len; 1262 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1263 bsd_flock->l_sysid = 0; 1264 } 1265 1266 static void 1267 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock) 1268 { 1269 switch (bsd_flock->l_type) { 1270 case F_RDLCK: 1271 linux_flock->l_type = LINUX_F_RDLCK; 1272 break; 1273 case F_WRLCK: 1274 linux_flock->l_type = LINUX_F_WRLCK; 1275 break; 1276 case F_UNLCK: 1277 linux_flock->l_type = LINUX_F_UNLCK; 1278 break; 1279 } 1280 linux_flock->l_whence = bsd_flock->l_whence; 1281 linux_flock->l_start = (l_loff_t)bsd_flock->l_start; 1282 linux_flock->l_len = (l_loff_t)bsd_flock->l_len; 1283 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1284 } 1285 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1286 1287 static int 1288 fcntl_common(struct thread *td, struct linux_fcntl64_args *args) 1289 { 1290 struct l_flock linux_flock; 1291 struct flock bsd_flock; 1292 struct file *fp; 1293 long arg; 1294 int error, result; 1295 1296 switch (args->cmd) { 1297 case LINUX_F_DUPFD: 1298 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg)); 1299 1300 case LINUX_F_GETFD: 1301 return (kern_fcntl(td, args->fd, F_GETFD, 0)); 1302 1303 case LINUX_F_SETFD: 1304 return (kern_fcntl(td, args->fd, F_SETFD, args->arg)); 1305 1306 case LINUX_F_GETFL: 1307 error = kern_fcntl(td, args->fd, F_GETFL, 0); 1308 result = td->td_retval[0]; 1309 td->td_retval[0] = 0; 1310 if (result & O_RDONLY) 1311 td->td_retval[0] |= LINUX_O_RDONLY; 1312 if (result & O_WRONLY) 1313 td->td_retval[0] |= LINUX_O_WRONLY; 1314 if (result & O_RDWR) 1315 td->td_retval[0] |= LINUX_O_RDWR; 1316 if (result & O_NDELAY) 1317 td->td_retval[0] |= LINUX_O_NONBLOCK; 1318 if (result & O_APPEND) 1319 td->td_retval[0] |= LINUX_O_APPEND; 1320 if (result & O_FSYNC) 1321 td->td_retval[0] |= LINUX_O_SYNC; 1322 if (result & O_ASYNC) 1323 td->td_retval[0] |= LINUX_FASYNC; 1324 #ifdef LINUX_O_NOFOLLOW 1325 if (result & O_NOFOLLOW) 1326 td->td_retval[0] |= LINUX_O_NOFOLLOW; 1327 #endif 1328 #ifdef LINUX_O_DIRECT 1329 if (result & O_DIRECT) 1330 td->td_retval[0] |= LINUX_O_DIRECT; 1331 #endif 1332 return (error); 1333 1334 case LINUX_F_SETFL: 1335 arg = 0; 1336 if (args->arg & LINUX_O_NDELAY) 1337 arg |= O_NONBLOCK; 1338 if (args->arg & LINUX_O_APPEND) 1339 arg |= O_APPEND; 1340 if (args->arg & LINUX_O_SYNC) 1341 arg |= O_FSYNC; 1342 if (args->arg & LINUX_FASYNC) 1343 arg |= O_ASYNC; 1344 #ifdef LINUX_O_NOFOLLOW 1345 if (args->arg & LINUX_O_NOFOLLOW) 1346 arg |= O_NOFOLLOW; 1347 #endif 1348 #ifdef LINUX_O_DIRECT 1349 if (args->arg & LINUX_O_DIRECT) 1350 arg |= O_DIRECT; 1351 #endif 1352 return (kern_fcntl(td, args->fd, F_SETFL, arg)); 1353 1354 case LINUX_F_GETLK: 1355 error = copyin((void *)args->arg, &linux_flock, 1356 sizeof(linux_flock)); 1357 if (error) 1358 return (error); 1359 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1360 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1361 if (error) 1362 return (error); 1363 bsd_to_linux_flock(&bsd_flock, &linux_flock); 1364 return (copyout(&linux_flock, (void *)args->arg, 1365 sizeof(linux_flock))); 1366 1367 case LINUX_F_SETLK: 1368 error = copyin((void *)args->arg, &linux_flock, 1369 sizeof(linux_flock)); 1370 if (error) 1371 return (error); 1372 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1373 return (kern_fcntl(td, args->fd, F_SETLK, 1374 (intptr_t)&bsd_flock)); 1375 1376 case LINUX_F_SETLKW: 1377 error = copyin((void *)args->arg, &linux_flock, 1378 sizeof(linux_flock)); 1379 if (error) 1380 return (error); 1381 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1382 return (kern_fcntl(td, args->fd, F_SETLKW, 1383 (intptr_t)&bsd_flock)); 1384 1385 case LINUX_F_GETOWN: 1386 return (kern_fcntl(td, args->fd, F_GETOWN, 0)); 1387 1388 case LINUX_F_SETOWN: 1389 /* 1390 * XXX some Linux applications depend on F_SETOWN having no 1391 * significant effect for pipes (SIGIO is not delivered for 1392 * pipes under Linux-2.2.35 at least). 1393 */ 1394 error = fget(td, args->fd, CAP_FCNTL, &fp); 1395 if (error) 1396 return (error); 1397 if (fp->f_type == DTYPE_PIPE) { 1398 fdrop(fp, td); 1399 return (EINVAL); 1400 } 1401 fdrop(fp, td); 1402 1403 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg)); 1404 } 1405 1406 return (EINVAL); 1407 } 1408 1409 int 1410 linux_fcntl(struct thread *td, struct linux_fcntl_args *args) 1411 { 1412 struct linux_fcntl64_args args64; 1413 1414 #ifdef DEBUG 1415 if (ldebug(fcntl)) 1416 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd); 1417 #endif 1418 1419 args64.fd = args->fd; 1420 args64.cmd = args->cmd; 1421 args64.arg = args->arg; 1422 return (fcntl_common(td, &args64)); 1423 } 1424 1425 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1426 int 1427 linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args) 1428 { 1429 struct l_flock64 linux_flock; 1430 struct flock bsd_flock; 1431 int error; 1432 1433 #ifdef DEBUG 1434 if (ldebug(fcntl64)) 1435 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd); 1436 #endif 1437 1438 switch (args->cmd) { 1439 case LINUX_F_GETLK64: 1440 error = copyin((void *)args->arg, &linux_flock, 1441 sizeof(linux_flock)); 1442 if (error) 1443 return (error); 1444 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1445 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1446 if (error) 1447 return (error); 1448 bsd_to_linux_flock64(&bsd_flock, &linux_flock); 1449 return (copyout(&linux_flock, (void *)args->arg, 1450 sizeof(linux_flock))); 1451 1452 case LINUX_F_SETLK64: 1453 error = copyin((void *)args->arg, &linux_flock, 1454 sizeof(linux_flock)); 1455 if (error) 1456 return (error); 1457 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1458 return (kern_fcntl(td, args->fd, F_SETLK, 1459 (intptr_t)&bsd_flock)); 1460 1461 case LINUX_F_SETLKW64: 1462 error = copyin((void *)args->arg, &linux_flock, 1463 sizeof(linux_flock)); 1464 if (error) 1465 return (error); 1466 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1467 return (kern_fcntl(td, args->fd, F_SETLKW, 1468 (intptr_t)&bsd_flock)); 1469 } 1470 1471 return (fcntl_common(td, args)); 1472 } 1473 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1474 1475 int 1476 linux_chown(struct thread *td, struct linux_chown_args *args) 1477 { 1478 char *path; 1479 int error; 1480 1481 LCONVPATHEXIST(td, args->path, &path); 1482 1483 #ifdef DEBUG 1484 if (ldebug(chown)) 1485 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid); 1486 #endif 1487 error = kern_chown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1488 LFREEPATH(path); 1489 return (error); 1490 } 1491 1492 int 1493 linux_fchownat(struct thread *td, struct linux_fchownat_args *args) 1494 { 1495 char *path; 1496 int error, dfd, follow; 1497 1498 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW) 1499 return (EINVAL); 1500 1501 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 1502 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 1503 1504 #ifdef DEBUG 1505 if (ldebug(fchownat)) 1506 printf(ARGS(fchownat, "%s, %d, %d"), path, args->uid, args->gid); 1507 #endif 1508 1509 follow = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 : 1510 AT_SYMLINK_NOFOLLOW; 1511 error = kern_fchownat(td, dfd, path, UIO_SYSSPACE, args->uid, args->gid, 1512 follow); 1513 LFREEPATH(path); 1514 return (error); 1515 } 1516 1517 int 1518 linux_lchown(struct thread *td, struct linux_lchown_args *args) 1519 { 1520 char *path; 1521 int error; 1522 1523 LCONVPATHEXIST(td, args->path, &path); 1524 1525 #ifdef DEBUG 1526 if (ldebug(lchown)) 1527 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid); 1528 #endif 1529 error = kern_lchown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1530 LFREEPATH(path); 1531 return (error); 1532 } 1533