1 /*- 2 * Copyright (c) 1994-1995 Søren 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 /* XXX */ 73 int do_pipe(struct thread *td, int fildes[2], int flags); 74 75 int 76 linux_creat(struct thread *td, struct linux_creat_args *args) 77 { 78 char *path; 79 int error; 80 81 LCONVPATHEXIST(td, args->path, &path); 82 83 #ifdef DEBUG 84 if (ldebug(creat)) 85 printf(ARGS(creat, "%s, %d"), path, args->mode); 86 #endif 87 error = kern_open(td, path, UIO_SYSSPACE, O_WRONLY | O_CREAT | O_TRUNC, 88 args->mode); 89 LFREEPATH(path); 90 return (error); 91 } 92 93 94 static int 95 linux_common_open(struct thread *td, int dirfd, char *path, int l_flags, int mode) 96 { 97 struct proc *p = td->td_proc; 98 struct file *fp; 99 int fd; 100 int bsd_flags, error; 101 102 bsd_flags = 0; 103 switch (l_flags & LINUX_O_ACCMODE) { 104 case LINUX_O_WRONLY: 105 bsd_flags |= O_WRONLY; 106 break; 107 case LINUX_O_RDWR: 108 bsd_flags |= O_RDWR; 109 break; 110 default: 111 bsd_flags |= O_RDONLY; 112 } 113 if (l_flags & LINUX_O_NDELAY) 114 bsd_flags |= O_NONBLOCK; 115 if (l_flags & LINUX_O_APPEND) 116 bsd_flags |= O_APPEND; 117 if (l_flags & LINUX_O_SYNC) 118 bsd_flags |= O_FSYNC; 119 if (l_flags & LINUX_O_NONBLOCK) 120 bsd_flags |= O_NONBLOCK; 121 if (l_flags & LINUX_FASYNC) 122 bsd_flags |= O_ASYNC; 123 if (l_flags & LINUX_O_CREAT) 124 bsd_flags |= O_CREAT; 125 if (l_flags & LINUX_O_TRUNC) 126 bsd_flags |= O_TRUNC; 127 if (l_flags & LINUX_O_EXCL) 128 bsd_flags |= O_EXCL; 129 if (l_flags & LINUX_O_NOCTTY) 130 bsd_flags |= O_NOCTTY; 131 if (l_flags & LINUX_O_DIRECT) 132 bsd_flags |= O_DIRECT; 133 if (l_flags & LINUX_O_NOFOLLOW) 134 bsd_flags |= O_NOFOLLOW; 135 if (l_flags & LINUX_O_DIRECTORY) 136 bsd_flags |= O_DIRECTORY; 137 /* XXX LINUX_O_NOATIME: unable to be easily implemented. */ 138 139 error = kern_openat(td, dirfd, path, UIO_SYSSPACE, bsd_flags, mode); 140 141 if (!error) { 142 fd = td->td_retval[0]; 143 /* 144 * XXX In between kern_open() and fget(), another process 145 * having the same filedesc could use that fd without 146 * checking below. 147 */ 148 error = fget(td, fd, CAP_IOCTL, &fp); 149 if (!error) { 150 sx_slock(&proctree_lock); 151 PROC_LOCK(p); 152 if (!(bsd_flags & O_NOCTTY) && 153 SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 154 PROC_UNLOCK(p); 155 sx_unlock(&proctree_lock); 156 if (fp->f_type == DTYPE_VNODE) 157 (void) fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, 158 td->td_ucred, td); 159 } else { 160 PROC_UNLOCK(p); 161 sx_sunlock(&proctree_lock); 162 } 163 fdrop(fp, td); 164 /* 165 * XXX as above, fdrop()/kern_close() pair is racy. 166 */ 167 if (error) 168 kern_close(td, fd); 169 } 170 } 171 172 #ifdef DEBUG 173 if (ldebug(open)) 174 printf(LMSG("open returns error %d"), error); 175 #endif 176 LFREEPATH(path); 177 return (error); 178 } 179 180 int 181 linux_openat(struct thread *td, struct linux_openat_args *args) 182 { 183 char *path; 184 int dfd; 185 186 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 187 if (args->flags & LINUX_O_CREAT) 188 LCONVPATH_AT(td, args->filename, &path, 1, dfd); 189 else 190 LCONVPATH_AT(td, args->filename, &path, 0, dfd); 191 #ifdef DEBUG 192 if (ldebug(openat)) 193 printf(ARGS(openat, "%i, %s, 0x%x, 0x%x"), args->dfd, 194 path, args->flags, args->mode); 195 #endif 196 return (linux_common_open(td, dfd, path, args->flags, args->mode)); 197 } 198 199 int 200 linux_open(struct thread *td, struct linux_open_args *args) 201 { 202 char *path; 203 204 if (args->flags & LINUX_O_CREAT) 205 LCONVPATHCREAT(td, args->path, &path); 206 else 207 LCONVPATHEXIST(td, args->path, &path); 208 209 #ifdef DEBUG 210 if (ldebug(open)) 211 printf(ARGS(open, "%s, 0x%x, 0x%x"), 212 path, args->flags, args->mode); 213 #endif 214 215 return (linux_common_open(td, AT_FDCWD, path, args->flags, args->mode)); 216 } 217 218 int 219 linux_lseek(struct thread *td, struct linux_lseek_args *args) 220 { 221 222 struct lseek_args /* { 223 int fd; 224 int pad; 225 off_t offset; 226 int whence; 227 } */ tmp_args; 228 int error; 229 230 #ifdef DEBUG 231 if (ldebug(lseek)) 232 printf(ARGS(lseek, "%d, %ld, %d"), 233 args->fdes, (long)args->off, args->whence); 234 #endif 235 tmp_args.fd = args->fdes; 236 tmp_args.offset = (off_t)args->off; 237 tmp_args.whence = args->whence; 238 error = sys_lseek(td, &tmp_args); 239 return error; 240 } 241 242 int 243 linux_llseek(struct thread *td, struct linux_llseek_args *args) 244 { 245 struct lseek_args bsd_args; 246 int error; 247 off_t off; 248 249 #ifdef DEBUG 250 if (ldebug(llseek)) 251 printf(ARGS(llseek, "%d, %d:%d, %d"), 252 args->fd, args->ohigh, args->olow, args->whence); 253 #endif 254 off = (args->olow) | (((off_t) args->ohigh) << 32); 255 256 bsd_args.fd = args->fd; 257 bsd_args.offset = off; 258 bsd_args.whence = args->whence; 259 260 if ((error = sys_lseek(td, &bsd_args))) 261 return error; 262 263 if ((error = copyout(td->td_retval, args->res, sizeof (off_t)))) 264 return error; 265 266 td->td_retval[0] = 0; 267 return 0; 268 } 269 270 int 271 linux_readdir(struct thread *td, struct linux_readdir_args *args) 272 { 273 struct linux_getdents_args lda; 274 275 lda.fd = args->fd; 276 lda.dent = args->dent; 277 lda.count = 1; 278 return linux_getdents(td, &lda); 279 } 280 281 /* 282 * Note that linux_getdents(2) and linux_getdents64(2) have the same 283 * arguments. They only differ in the definition of struct dirent they 284 * operate on. We use this to common the code, with the exception of 285 * accessing struct dirent. Note that linux_readdir(2) is implemented 286 * by means of linux_getdents(2). In this case we never operate on 287 * struct dirent64 and thus don't need to handle it... 288 */ 289 290 struct l_dirent { 291 l_ulong d_ino; 292 l_off_t d_off; 293 l_ushort d_reclen; 294 char d_name[LINUX_NAME_MAX + 1]; 295 }; 296 297 struct l_dirent64 { 298 uint64_t d_ino; 299 int64_t d_off; 300 l_ushort d_reclen; 301 u_char d_type; 302 char d_name[LINUX_NAME_MAX + 1]; 303 }; 304 305 /* 306 * Linux uses the last byte in the dirent buffer to store d_type, 307 * at least glibc-2.7 requires it. That is why l_dirent is padded with 2 bytes. 308 */ 309 #define LINUX_RECLEN(namlen) \ 310 roundup((offsetof(struct l_dirent, d_name) + (namlen) + 2), \ 311 sizeof(l_ulong)) 312 313 #define LINUX_RECLEN64(namlen) \ 314 roundup((offsetof(struct l_dirent64, d_name) + (namlen) + 1), \ 315 sizeof(uint64_t)) 316 317 #define LINUX_MAXRECLEN max(LINUX_RECLEN(LINUX_NAME_MAX), \ 318 LINUX_RECLEN64(LINUX_NAME_MAX)) 319 #define LINUX_DIRBLKSIZ 512 320 321 static int 322 getdents_common(struct thread *td, struct linux_getdents64_args *args, 323 int is64bit) 324 { 325 struct dirent *bdp; 326 struct vnode *vp; 327 caddr_t inp, buf; /* BSD-format */ 328 int len, reclen; /* BSD-format */ 329 caddr_t outp; /* Linux-format */ 330 int resid, linuxreclen=0; /* Linux-format */ 331 caddr_t lbuf; /* Linux-format */ 332 struct file *fp; 333 struct uio auio; 334 struct iovec aiov; 335 off_t off; 336 struct l_dirent *linux_dirent; 337 struct l_dirent64 *linux_dirent64; 338 int buflen, error, eofflag, nbytes, justone; 339 u_long *cookies = NULL, *cookiep; 340 int ncookies, vfslocked; 341 342 nbytes = args->count; 343 if (nbytes == 1) { 344 /* readdir(2) case. Always struct dirent. */ 345 if (is64bit) 346 return (EINVAL); 347 nbytes = sizeof(*linux_dirent); 348 justone = 1; 349 } else 350 justone = 0; 351 352 if ((error = getvnode(td->td_proc->p_fd, args->fd, CAP_READ, &fp)) != 0) 353 return (error); 354 355 if ((fp->f_flag & FREAD) == 0) { 356 fdrop(fp, td); 357 return (EBADF); 358 } 359 360 vp = fp->f_vnode; 361 vfslocked = VFS_LOCK_GIANT(vp->v_mount); 362 if (vp->v_type != VDIR) { 363 VFS_UNLOCK_GIANT(vfslocked); 364 fdrop(fp, td); 365 return (EINVAL); 366 } 367 368 off = fp->f_offset; 369 370 buflen = max(LINUX_DIRBLKSIZ, nbytes); 371 buflen = min(buflen, MAXBSIZE); 372 buf = malloc(buflen, M_TEMP, M_WAITOK); 373 lbuf = malloc(LINUX_MAXRECLEN, M_TEMP, M_WAITOK | M_ZERO); 374 vn_lock(vp, LK_SHARED | LK_RETRY); 375 376 aiov.iov_base = buf; 377 aiov.iov_len = buflen; 378 auio.uio_iov = &aiov; 379 auio.uio_iovcnt = 1; 380 auio.uio_rw = UIO_READ; 381 auio.uio_segflg = UIO_SYSSPACE; 382 auio.uio_td = td; 383 auio.uio_resid = buflen; 384 auio.uio_offset = off; 385 386 if (cookies) { 387 free(cookies, M_TEMP); 388 cookies = NULL; 389 } 390 391 #ifdef MAC 392 /* 393 * Do directory search MAC check using non-cached credentials. 394 */ 395 if ((error = mac_vnode_check_readdir(td->td_ucred, vp))) 396 goto out; 397 #endif /* MAC */ 398 if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, 399 &cookies))) 400 goto out; 401 402 inp = buf; 403 outp = (caddr_t)args->dirent; 404 resid = nbytes; 405 if ((len = buflen - auio.uio_resid) <= 0) 406 goto eof; 407 408 cookiep = cookies; 409 410 if (cookies) { 411 /* 412 * When using cookies, the vfs has the option of reading from 413 * a different offset than that supplied (UFS truncates the 414 * offset to a block boundary to make sure that it never reads 415 * partway through a directory entry, even if the directory 416 * has been compacted). 417 */ 418 while (len > 0 && ncookies > 0 && *cookiep <= off) { 419 bdp = (struct dirent *) inp; 420 len -= bdp->d_reclen; 421 inp += bdp->d_reclen; 422 cookiep++; 423 ncookies--; 424 } 425 } 426 427 while (len > 0) { 428 if (cookiep && ncookies == 0) 429 break; 430 bdp = (struct dirent *) inp; 431 reclen = bdp->d_reclen; 432 if (reclen & 3) { 433 error = EFAULT; 434 goto out; 435 } 436 437 if (bdp->d_fileno == 0) { 438 inp += reclen; 439 if (cookiep) { 440 off = *cookiep++; 441 ncookies--; 442 } else 443 off += reclen; 444 445 len -= reclen; 446 continue; 447 } 448 449 linuxreclen = (is64bit) 450 ? LINUX_RECLEN64(bdp->d_namlen) 451 : LINUX_RECLEN(bdp->d_namlen); 452 453 if (reclen > len || resid < linuxreclen) { 454 outp++; 455 break; 456 } 457 458 if (justone) { 459 /* readdir(2) case. */ 460 linux_dirent = (struct l_dirent*)lbuf; 461 linux_dirent->d_ino = bdp->d_fileno; 462 linux_dirent->d_off = (l_off_t)linuxreclen; 463 linux_dirent->d_reclen = (l_ushort)bdp->d_namlen; 464 strlcpy(linux_dirent->d_name, bdp->d_name, 465 linuxreclen - offsetof(struct l_dirent, d_name)); 466 error = copyout(linux_dirent, outp, linuxreclen); 467 } 468 if (is64bit) { 469 linux_dirent64 = (struct l_dirent64*)lbuf; 470 linux_dirent64->d_ino = bdp->d_fileno; 471 linux_dirent64->d_off = (cookiep) 472 ? (l_off_t)*cookiep 473 : (l_off_t)(off + reclen); 474 linux_dirent64->d_reclen = (l_ushort)linuxreclen; 475 linux_dirent64->d_type = bdp->d_type; 476 strlcpy(linux_dirent64->d_name, bdp->d_name, 477 linuxreclen - offsetof(struct l_dirent64, d_name)); 478 error = copyout(linux_dirent64, outp, linuxreclen); 479 } else if (!justone) { 480 linux_dirent = (struct l_dirent*)lbuf; 481 linux_dirent->d_ino = bdp->d_fileno; 482 linux_dirent->d_off = (cookiep) 483 ? (l_off_t)*cookiep 484 : (l_off_t)(off + reclen); 485 linux_dirent->d_reclen = (l_ushort)linuxreclen; 486 /* 487 * Copy d_type to last byte of l_dirent buffer 488 */ 489 lbuf[linuxreclen-1] = bdp->d_type; 490 strlcpy(linux_dirent->d_name, bdp->d_name, 491 linuxreclen - offsetof(struct l_dirent, d_name)-1); 492 error = copyout(linux_dirent, outp, linuxreclen); 493 } 494 495 if (error) 496 goto out; 497 498 inp += reclen; 499 if (cookiep) { 500 off = *cookiep++; 501 ncookies--; 502 } else 503 off += reclen; 504 505 outp += linuxreclen; 506 resid -= linuxreclen; 507 len -= reclen; 508 if (justone) 509 break; 510 } 511 512 if (outp == (caddr_t)args->dirent) { 513 nbytes = resid; 514 goto eof; 515 } 516 517 fp->f_offset = off; 518 if (justone) 519 nbytes = resid + linuxreclen; 520 521 eof: 522 td->td_retval[0] = nbytes - resid; 523 524 out: 525 if (cookies) 526 free(cookies, M_TEMP); 527 528 VOP_UNLOCK(vp, 0); 529 VFS_UNLOCK_GIANT(vfslocked); 530 fdrop(fp, td); 531 free(buf, M_TEMP); 532 free(lbuf, M_TEMP); 533 return (error); 534 } 535 536 int 537 linux_getdents(struct thread *td, struct linux_getdents_args *args) 538 { 539 540 #ifdef DEBUG 541 if (ldebug(getdents)) 542 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count); 543 #endif 544 545 return (getdents_common(td, (struct linux_getdents64_args*)args, 0)); 546 } 547 548 int 549 linux_getdents64(struct thread *td, struct linux_getdents64_args *args) 550 { 551 552 #ifdef DEBUG 553 if (ldebug(getdents64)) 554 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count); 555 #endif 556 557 return (getdents_common(td, args, 1)); 558 } 559 560 /* 561 * These exist mainly for hooks for doing /compat/linux translation. 562 */ 563 564 int 565 linux_access(struct thread *td, struct linux_access_args *args) 566 { 567 char *path; 568 int error; 569 570 /* linux convention */ 571 if (args->amode & ~(F_OK | X_OK | W_OK | R_OK)) 572 return (EINVAL); 573 574 LCONVPATHEXIST(td, args->path, &path); 575 576 #ifdef DEBUG 577 if (ldebug(access)) 578 printf(ARGS(access, "%s, %d"), path, args->amode); 579 #endif 580 error = kern_access(td, path, UIO_SYSSPACE, args->amode); 581 LFREEPATH(path); 582 583 return (error); 584 } 585 586 int 587 linux_faccessat(struct thread *td, struct linux_faccessat_args *args) 588 { 589 char *path; 590 int error, dfd, flag; 591 592 if (args->flag & ~LINUX_AT_EACCESS) 593 return (EINVAL); 594 /* linux convention */ 595 if (args->amode & ~(F_OK | X_OK | W_OK | R_OK)) 596 return (EINVAL); 597 598 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 599 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 600 601 #ifdef DEBUG 602 if (ldebug(access)) 603 printf(ARGS(access, "%s, %d"), path, args->amode); 604 #endif 605 606 flag = (args->flag & LINUX_AT_EACCESS) == 0 ? 0 : AT_EACCESS; 607 error = kern_accessat(td, dfd, path, UIO_SYSSPACE, flag, args->amode); 608 LFREEPATH(path); 609 610 return (error); 611 } 612 613 int 614 linux_unlink(struct thread *td, struct linux_unlink_args *args) 615 { 616 char *path; 617 int error; 618 struct stat st; 619 620 LCONVPATHEXIST(td, args->path, &path); 621 622 #ifdef DEBUG 623 if (ldebug(unlink)) 624 printf(ARGS(unlink, "%s"), path); 625 #endif 626 627 error = kern_unlink(td, path, UIO_SYSSPACE); 628 if (error == EPERM) 629 /* Introduce POSIX noncompliant behaviour of Linux */ 630 if (kern_stat(td, path, UIO_SYSSPACE, &st) == 0) 631 if (S_ISDIR(st.st_mode)) 632 error = EISDIR; 633 LFREEPATH(path); 634 return (error); 635 } 636 637 int 638 linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args) 639 { 640 char *path; 641 int error, dfd; 642 struct stat st; 643 644 if (args->flag & ~LINUX_AT_REMOVEDIR) 645 return (EINVAL); 646 647 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 648 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); 649 650 #ifdef DEBUG 651 if (ldebug(unlinkat)) 652 printf(ARGS(unlinkat, "%s"), path); 653 #endif 654 655 if (args->flag & LINUX_AT_REMOVEDIR) 656 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE); 657 else 658 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE, 0); 659 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) { 660 /* Introduce POSIX noncompliant behaviour of Linux */ 661 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path, 662 UIO_SYSSPACE, &st) == 0 && S_ISDIR(st.st_mode)) 663 error = EISDIR; 664 } 665 LFREEPATH(path); 666 return (error); 667 } 668 int 669 linux_chdir(struct thread *td, struct linux_chdir_args *args) 670 { 671 char *path; 672 int error; 673 674 LCONVPATHEXIST(td, args->path, &path); 675 676 #ifdef DEBUG 677 if (ldebug(chdir)) 678 printf(ARGS(chdir, "%s"), path); 679 #endif 680 error = kern_chdir(td, path, UIO_SYSSPACE); 681 LFREEPATH(path); 682 return (error); 683 } 684 685 int 686 linux_chmod(struct thread *td, struct linux_chmod_args *args) 687 { 688 char *path; 689 int error; 690 691 LCONVPATHEXIST(td, args->path, &path); 692 693 #ifdef DEBUG 694 if (ldebug(chmod)) 695 printf(ARGS(chmod, "%s, %d"), path, args->mode); 696 #endif 697 error = kern_chmod(td, path, UIO_SYSSPACE, args->mode); 698 LFREEPATH(path); 699 return (error); 700 } 701 702 int 703 linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args) 704 { 705 char *path; 706 int error, dfd; 707 708 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 709 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 710 711 #ifdef DEBUG 712 if (ldebug(fchmodat)) 713 printf(ARGS(fchmodat, "%s, %d"), path, args->mode); 714 #endif 715 716 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0); 717 LFREEPATH(path); 718 return (error); 719 } 720 721 int 722 linux_mkdir(struct thread *td, struct linux_mkdir_args *args) 723 { 724 char *path; 725 int error; 726 727 LCONVPATHCREAT(td, args->path, &path); 728 729 #ifdef DEBUG 730 if (ldebug(mkdir)) 731 printf(ARGS(mkdir, "%s, %d"), path, args->mode); 732 #endif 733 error = kern_mkdir(td, path, UIO_SYSSPACE, args->mode); 734 LFREEPATH(path); 735 return (error); 736 } 737 738 int 739 linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args) 740 { 741 char *path; 742 int error, dfd; 743 744 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 745 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd); 746 747 #ifdef DEBUG 748 if (ldebug(mkdirat)) 749 printf(ARGS(mkdirat, "%s, %d"), path, args->mode); 750 #endif 751 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode); 752 LFREEPATH(path); 753 return (error); 754 } 755 756 int 757 linux_rmdir(struct thread *td, struct linux_rmdir_args *args) 758 { 759 char *path; 760 int error; 761 762 LCONVPATHEXIST(td, args->path, &path); 763 764 #ifdef DEBUG 765 if (ldebug(rmdir)) 766 printf(ARGS(rmdir, "%s"), path); 767 #endif 768 error = kern_rmdir(td, path, UIO_SYSSPACE); 769 LFREEPATH(path); 770 return (error); 771 } 772 773 int 774 linux_rename(struct thread *td, struct linux_rename_args *args) 775 { 776 char *from, *to; 777 int error; 778 779 LCONVPATHEXIST(td, args->from, &from); 780 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 781 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 782 if (to == NULL) { 783 LFREEPATH(from); 784 return (error); 785 } 786 787 #ifdef DEBUG 788 if (ldebug(rename)) 789 printf(ARGS(rename, "%s, %s"), from, to); 790 #endif 791 error = kern_rename(td, from, to, UIO_SYSSPACE); 792 LFREEPATH(from); 793 LFREEPATH(to); 794 return (error); 795 } 796 797 int 798 linux_renameat(struct thread *td, struct linux_renameat_args *args) 799 { 800 char *from, *to; 801 int error, olddfd, newdfd; 802 803 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 804 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 805 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd); 806 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 807 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 808 if (to == NULL) { 809 LFREEPATH(from); 810 return (error); 811 } 812 813 #ifdef DEBUG 814 if (ldebug(renameat)) 815 printf(ARGS(renameat, "%s, %s"), from, to); 816 #endif 817 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE); 818 LFREEPATH(from); 819 LFREEPATH(to); 820 return (error); 821 } 822 823 int 824 linux_symlink(struct thread *td, struct linux_symlink_args *args) 825 { 826 char *path, *to; 827 int error; 828 829 LCONVPATHEXIST(td, args->path, &path); 830 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 831 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 832 if (to == NULL) { 833 LFREEPATH(path); 834 return (error); 835 } 836 837 #ifdef DEBUG 838 if (ldebug(symlink)) 839 printf(ARGS(symlink, "%s, %s"), path, to); 840 #endif 841 error = kern_symlink(td, path, to, UIO_SYSSPACE); 842 LFREEPATH(path); 843 LFREEPATH(to); 844 return (error); 845 } 846 847 int 848 linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args) 849 { 850 char *path, *to; 851 int error, dfd; 852 853 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 854 LCONVPATHEXIST_AT(td, args->oldname, &path, dfd); 855 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 856 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd); 857 if (to == NULL) { 858 LFREEPATH(path); 859 return (error); 860 } 861 862 #ifdef DEBUG 863 if (ldebug(symlinkat)) 864 printf(ARGS(symlinkat, "%s, %s"), path, to); 865 #endif 866 867 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE); 868 LFREEPATH(path); 869 LFREEPATH(to); 870 return (error); 871 } 872 873 int 874 linux_readlink(struct thread *td, struct linux_readlink_args *args) 875 { 876 char *name; 877 int error; 878 879 LCONVPATHEXIST(td, args->name, &name); 880 881 #ifdef DEBUG 882 if (ldebug(readlink)) 883 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf, 884 args->count); 885 #endif 886 error = kern_readlink(td, name, UIO_SYSSPACE, args->buf, UIO_USERSPACE, 887 args->count); 888 LFREEPATH(name); 889 return (error); 890 } 891 892 int 893 linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args) 894 { 895 char *name; 896 int error, dfd; 897 898 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 899 LCONVPATHEXIST_AT(td, args->path, &name, dfd); 900 901 #ifdef DEBUG 902 if (ldebug(readlinkat)) 903 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf, 904 args->bufsiz); 905 #endif 906 907 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf, 908 UIO_USERSPACE, args->bufsiz); 909 LFREEPATH(name); 910 return (error); 911 } 912 913 int 914 linux_truncate(struct thread *td, struct linux_truncate_args *args) 915 { 916 char *path; 917 int error; 918 919 LCONVPATHEXIST(td, args->path, &path); 920 921 #ifdef DEBUG 922 if (ldebug(truncate)) 923 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length); 924 #endif 925 926 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 927 LFREEPATH(path); 928 return (error); 929 } 930 931 int 932 linux_truncate64(struct thread *td, struct linux_truncate64_args *args) 933 { 934 char *path; 935 int error; 936 937 LCONVPATHEXIST(td, args->path, &path); 938 939 #ifdef DEBUG 940 if (ldebug(truncate64)) 941 printf(ARGS(truncate64, "%s, %jd"), path, args->length); 942 #endif 943 944 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 945 LFREEPATH(path); 946 return (error); 947 } 948 int 949 linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args) 950 { 951 struct ftruncate_args /* { 952 int fd; 953 int pad; 954 off_t length; 955 } */ nuap; 956 957 nuap.fd = args->fd; 958 nuap.length = args->length; 959 return (sys_ftruncate(td, &nuap)); 960 } 961 962 int 963 linux_link(struct thread *td, struct linux_link_args *args) 964 { 965 char *path, *to; 966 int error; 967 968 LCONVPATHEXIST(td, args->path, &path); 969 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 970 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 971 if (to == NULL) { 972 LFREEPATH(path); 973 return (error); 974 } 975 976 #ifdef DEBUG 977 if (ldebug(link)) 978 printf(ARGS(link, "%s, %s"), path, to); 979 #endif 980 error = kern_link(td, path, to, UIO_SYSSPACE); 981 LFREEPATH(path); 982 LFREEPATH(to); 983 return (error); 984 } 985 986 int 987 linux_linkat(struct thread *td, struct linux_linkat_args *args) 988 { 989 char *path, *to; 990 int error, olddfd, newdfd, follow; 991 992 if (args->flag & ~LINUX_AT_SYMLINK_FOLLOW) 993 return (EINVAL); 994 995 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 996 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 997 LCONVPATHEXIST_AT(td, args->oldname, &path, olddfd); 998 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 999 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 1000 if (to == NULL) { 1001 LFREEPATH(path); 1002 return (error); 1003 } 1004 1005 #ifdef DEBUG 1006 if (ldebug(linkat)) 1007 printf(ARGS(linkat, "%i, %s, %i, %s, %i"), args->olddfd, path, 1008 args->newdfd, to, args->flag); 1009 #endif 1010 1011 follow = (args->flag & LINUX_AT_SYMLINK_FOLLOW) == 0 ? NOFOLLOW : 1012 FOLLOW; 1013 error = kern_linkat(td, olddfd, newdfd, path, to, UIO_SYSSPACE, follow); 1014 LFREEPATH(path); 1015 LFREEPATH(to); 1016 return (error); 1017 } 1018 1019 int 1020 linux_fdatasync(td, uap) 1021 struct thread *td; 1022 struct linux_fdatasync_args *uap; 1023 { 1024 struct fsync_args bsd; 1025 1026 bsd.fd = uap->fd; 1027 return sys_fsync(td, &bsd); 1028 } 1029 1030 int 1031 linux_pread(td, uap) 1032 struct thread *td; 1033 struct linux_pread_args *uap; 1034 { 1035 struct pread_args bsd; 1036 struct vnode *vp; 1037 int error; 1038 1039 bsd.fd = uap->fd; 1040 bsd.buf = uap->buf; 1041 bsd.nbyte = uap->nbyte; 1042 bsd.offset = uap->offset; 1043 1044 error = sys_pread(td, &bsd); 1045 1046 if (error == 0) { 1047 /* This seems to violate POSIX but linux does it */ 1048 if ((error = fgetvp(td, uap->fd, CAP_READ, &vp)) != 0) 1049 return (error); 1050 if (vp->v_type == VDIR) { 1051 vrele(vp); 1052 return (EISDIR); 1053 } 1054 vrele(vp); 1055 } 1056 1057 return (error); 1058 } 1059 1060 int 1061 linux_pwrite(td, uap) 1062 struct thread *td; 1063 struct linux_pwrite_args *uap; 1064 { 1065 struct pwrite_args bsd; 1066 1067 bsd.fd = uap->fd; 1068 bsd.buf = uap->buf; 1069 bsd.nbyte = uap->nbyte; 1070 bsd.offset = uap->offset; 1071 return sys_pwrite(td, &bsd); 1072 } 1073 1074 int 1075 linux_mount(struct thread *td, struct linux_mount_args *args) 1076 { 1077 struct ufs_args ufs; 1078 char fstypename[MFSNAMELEN]; 1079 char mntonname[MNAMELEN], mntfromname[MNAMELEN]; 1080 int error; 1081 int fsflags; 1082 void *fsdata; 1083 1084 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1, 1085 NULL); 1086 if (error) 1087 return (error); 1088 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL); 1089 if (error) 1090 return (error); 1091 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL); 1092 if (error) 1093 return (error); 1094 1095 #ifdef DEBUG 1096 if (ldebug(mount)) 1097 printf(ARGS(mount, "%s, %s, %s"), 1098 fstypename, mntfromname, mntonname); 1099 #endif 1100 1101 if (strcmp(fstypename, "ext2") == 0) { 1102 strcpy(fstypename, "ext2fs"); 1103 fsdata = &ufs; 1104 ufs.fspec = mntfromname; 1105 #define DEFAULT_ROOTID -2 1106 ufs.export.ex_root = DEFAULT_ROOTID; 1107 ufs.export.ex_flags = 1108 args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0; 1109 } else if (strcmp(fstypename, "proc") == 0) { 1110 strcpy(fstypename, "linprocfs"); 1111 fsdata = NULL; 1112 } else if (strcmp(fstypename, "vfat") == 0) { 1113 strcpy(fstypename, "msdosfs"); 1114 fsdata = NULL; 1115 } else { 1116 return (ENODEV); 1117 } 1118 1119 fsflags = 0; 1120 1121 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) { 1122 /* 1123 * Linux SYNC flag is not included; the closest equivalent 1124 * FreeBSD has is !ASYNC, which is our default. 1125 */ 1126 if (args->rwflag & LINUX_MS_RDONLY) 1127 fsflags |= MNT_RDONLY; 1128 if (args->rwflag & LINUX_MS_NOSUID) 1129 fsflags |= MNT_NOSUID; 1130 if (args->rwflag & LINUX_MS_NOEXEC) 1131 fsflags |= MNT_NOEXEC; 1132 if (args->rwflag & LINUX_MS_REMOUNT) 1133 fsflags |= MNT_UPDATE; 1134 } 1135 1136 if (strcmp(fstypename, "linprocfs") == 0) { 1137 error = kernel_vmount(fsflags, 1138 "fstype", fstypename, 1139 "fspath", mntonname, 1140 NULL); 1141 } else if (strcmp(fstypename, "msdosfs") == 0) { 1142 error = kernel_vmount(fsflags, 1143 "fstype", fstypename, 1144 "fspath", mntonname, 1145 "from", mntfromname, 1146 NULL); 1147 } else 1148 error = EOPNOTSUPP; 1149 return (error); 1150 } 1151 1152 int 1153 linux_oldumount(struct thread *td, struct linux_oldumount_args *args) 1154 { 1155 struct linux_umount_args args2; 1156 1157 args2.path = args->path; 1158 args2.flags = 0; 1159 return (linux_umount(td, &args2)); 1160 } 1161 1162 int 1163 linux_umount(struct thread *td, struct linux_umount_args *args) 1164 { 1165 struct unmount_args bsd; 1166 1167 bsd.path = args->path; 1168 bsd.flags = args->flags; /* XXX correct? */ 1169 return (sys_unmount(td, &bsd)); 1170 } 1171 1172 /* 1173 * fcntl family of syscalls 1174 */ 1175 1176 struct l_flock { 1177 l_short l_type; 1178 l_short l_whence; 1179 l_off_t l_start; 1180 l_off_t l_len; 1181 l_pid_t l_pid; 1182 } 1183 #if defined(__amd64__) && defined(COMPAT_LINUX32) 1184 __packed 1185 #endif 1186 ; 1187 1188 static void 1189 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock) 1190 { 1191 switch (linux_flock->l_type) { 1192 case LINUX_F_RDLCK: 1193 bsd_flock->l_type = F_RDLCK; 1194 break; 1195 case LINUX_F_WRLCK: 1196 bsd_flock->l_type = F_WRLCK; 1197 break; 1198 case LINUX_F_UNLCK: 1199 bsd_flock->l_type = F_UNLCK; 1200 break; 1201 default: 1202 bsd_flock->l_type = -1; 1203 break; 1204 } 1205 bsd_flock->l_whence = linux_flock->l_whence; 1206 bsd_flock->l_start = (off_t)linux_flock->l_start; 1207 bsd_flock->l_len = (off_t)linux_flock->l_len; 1208 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1209 bsd_flock->l_sysid = 0; 1210 } 1211 1212 static void 1213 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock) 1214 { 1215 switch (bsd_flock->l_type) { 1216 case F_RDLCK: 1217 linux_flock->l_type = LINUX_F_RDLCK; 1218 break; 1219 case F_WRLCK: 1220 linux_flock->l_type = LINUX_F_WRLCK; 1221 break; 1222 case F_UNLCK: 1223 linux_flock->l_type = LINUX_F_UNLCK; 1224 break; 1225 } 1226 linux_flock->l_whence = bsd_flock->l_whence; 1227 linux_flock->l_start = (l_off_t)bsd_flock->l_start; 1228 linux_flock->l_len = (l_off_t)bsd_flock->l_len; 1229 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1230 } 1231 1232 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1233 struct l_flock64 { 1234 l_short l_type; 1235 l_short l_whence; 1236 l_loff_t l_start; 1237 l_loff_t l_len; 1238 l_pid_t l_pid; 1239 } 1240 #if defined(__amd64__) && defined(COMPAT_LINUX32) 1241 __packed 1242 #endif 1243 ; 1244 1245 static void 1246 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock) 1247 { 1248 switch (linux_flock->l_type) { 1249 case LINUX_F_RDLCK: 1250 bsd_flock->l_type = F_RDLCK; 1251 break; 1252 case LINUX_F_WRLCK: 1253 bsd_flock->l_type = F_WRLCK; 1254 break; 1255 case LINUX_F_UNLCK: 1256 bsd_flock->l_type = F_UNLCK; 1257 break; 1258 default: 1259 bsd_flock->l_type = -1; 1260 break; 1261 } 1262 bsd_flock->l_whence = linux_flock->l_whence; 1263 bsd_flock->l_start = (off_t)linux_flock->l_start; 1264 bsd_flock->l_len = (off_t)linux_flock->l_len; 1265 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1266 bsd_flock->l_sysid = 0; 1267 } 1268 1269 static void 1270 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock) 1271 { 1272 switch (bsd_flock->l_type) { 1273 case F_RDLCK: 1274 linux_flock->l_type = LINUX_F_RDLCK; 1275 break; 1276 case F_WRLCK: 1277 linux_flock->l_type = LINUX_F_WRLCK; 1278 break; 1279 case F_UNLCK: 1280 linux_flock->l_type = LINUX_F_UNLCK; 1281 break; 1282 } 1283 linux_flock->l_whence = bsd_flock->l_whence; 1284 linux_flock->l_start = (l_loff_t)bsd_flock->l_start; 1285 linux_flock->l_len = (l_loff_t)bsd_flock->l_len; 1286 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1287 } 1288 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1289 1290 static int 1291 fcntl_common(struct thread *td, struct linux_fcntl64_args *args) 1292 { 1293 struct l_flock linux_flock; 1294 struct flock bsd_flock; 1295 struct file *fp; 1296 long arg; 1297 int error, result; 1298 1299 switch (args->cmd) { 1300 case LINUX_F_DUPFD: 1301 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg)); 1302 1303 case LINUX_F_GETFD: 1304 return (kern_fcntl(td, args->fd, F_GETFD, 0)); 1305 1306 case LINUX_F_SETFD: 1307 return (kern_fcntl(td, args->fd, F_SETFD, args->arg)); 1308 1309 case LINUX_F_GETFL: 1310 error = kern_fcntl(td, args->fd, F_GETFL, 0); 1311 result = td->td_retval[0]; 1312 td->td_retval[0] = 0; 1313 if (result & O_RDONLY) 1314 td->td_retval[0] |= LINUX_O_RDONLY; 1315 if (result & O_WRONLY) 1316 td->td_retval[0] |= LINUX_O_WRONLY; 1317 if (result & O_RDWR) 1318 td->td_retval[0] |= LINUX_O_RDWR; 1319 if (result & O_NDELAY) 1320 td->td_retval[0] |= LINUX_O_NONBLOCK; 1321 if (result & O_APPEND) 1322 td->td_retval[0] |= LINUX_O_APPEND; 1323 if (result & O_FSYNC) 1324 td->td_retval[0] |= LINUX_O_SYNC; 1325 if (result & O_ASYNC) 1326 td->td_retval[0] |= LINUX_FASYNC; 1327 #ifdef LINUX_O_NOFOLLOW 1328 if (result & O_NOFOLLOW) 1329 td->td_retval[0] |= LINUX_O_NOFOLLOW; 1330 #endif 1331 #ifdef LINUX_O_DIRECT 1332 if (result & O_DIRECT) 1333 td->td_retval[0] |= LINUX_O_DIRECT; 1334 #endif 1335 return (error); 1336 1337 case LINUX_F_SETFL: 1338 arg = 0; 1339 if (args->arg & LINUX_O_NDELAY) 1340 arg |= O_NONBLOCK; 1341 if (args->arg & LINUX_O_APPEND) 1342 arg |= O_APPEND; 1343 if (args->arg & LINUX_O_SYNC) 1344 arg |= O_FSYNC; 1345 if (args->arg & LINUX_FASYNC) 1346 arg |= O_ASYNC; 1347 #ifdef LINUX_O_NOFOLLOW 1348 if (args->arg & LINUX_O_NOFOLLOW) 1349 arg |= O_NOFOLLOW; 1350 #endif 1351 #ifdef LINUX_O_DIRECT 1352 if (args->arg & LINUX_O_DIRECT) 1353 arg |= O_DIRECT; 1354 #endif 1355 return (kern_fcntl(td, args->fd, F_SETFL, arg)); 1356 1357 case LINUX_F_GETLK: 1358 error = copyin((void *)args->arg, &linux_flock, 1359 sizeof(linux_flock)); 1360 if (error) 1361 return (error); 1362 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1363 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1364 if (error) 1365 return (error); 1366 bsd_to_linux_flock(&bsd_flock, &linux_flock); 1367 return (copyout(&linux_flock, (void *)args->arg, 1368 sizeof(linux_flock))); 1369 1370 case LINUX_F_SETLK: 1371 error = copyin((void *)args->arg, &linux_flock, 1372 sizeof(linux_flock)); 1373 if (error) 1374 return (error); 1375 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1376 return (kern_fcntl(td, args->fd, F_SETLK, 1377 (intptr_t)&bsd_flock)); 1378 1379 case LINUX_F_SETLKW: 1380 error = copyin((void *)args->arg, &linux_flock, 1381 sizeof(linux_flock)); 1382 if (error) 1383 return (error); 1384 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1385 return (kern_fcntl(td, args->fd, F_SETLKW, 1386 (intptr_t)&bsd_flock)); 1387 1388 case LINUX_F_GETOWN: 1389 return (kern_fcntl(td, args->fd, F_GETOWN, 0)); 1390 1391 case LINUX_F_SETOWN: 1392 /* 1393 * XXX some Linux applications depend on F_SETOWN having no 1394 * significant effect for pipes (SIGIO is not delivered for 1395 * pipes under Linux-2.2.35 at least). 1396 */ 1397 error = fget(td, args->fd, CAP_FCNTL, &fp); 1398 if (error) 1399 return (error); 1400 if (fp->f_type == DTYPE_PIPE) { 1401 fdrop(fp, td); 1402 return (EINVAL); 1403 } 1404 fdrop(fp, td); 1405 1406 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg)); 1407 } 1408 1409 return (EINVAL); 1410 } 1411 1412 int 1413 linux_fcntl(struct thread *td, struct linux_fcntl_args *args) 1414 { 1415 struct linux_fcntl64_args args64; 1416 1417 #ifdef DEBUG 1418 if (ldebug(fcntl)) 1419 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd); 1420 #endif 1421 1422 args64.fd = args->fd; 1423 args64.cmd = args->cmd; 1424 args64.arg = args->arg; 1425 return (fcntl_common(td, &args64)); 1426 } 1427 1428 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1429 int 1430 linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args) 1431 { 1432 struct l_flock64 linux_flock; 1433 struct flock bsd_flock; 1434 int error; 1435 1436 #ifdef DEBUG 1437 if (ldebug(fcntl64)) 1438 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd); 1439 #endif 1440 1441 switch (args->cmd) { 1442 case LINUX_F_GETLK64: 1443 error = copyin((void *)args->arg, &linux_flock, 1444 sizeof(linux_flock)); 1445 if (error) 1446 return (error); 1447 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1448 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1449 if (error) 1450 return (error); 1451 bsd_to_linux_flock64(&bsd_flock, &linux_flock); 1452 return (copyout(&linux_flock, (void *)args->arg, 1453 sizeof(linux_flock))); 1454 1455 case LINUX_F_SETLK64: 1456 error = copyin((void *)args->arg, &linux_flock, 1457 sizeof(linux_flock)); 1458 if (error) 1459 return (error); 1460 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1461 return (kern_fcntl(td, args->fd, F_SETLK, 1462 (intptr_t)&bsd_flock)); 1463 1464 case LINUX_F_SETLKW64: 1465 error = copyin((void *)args->arg, &linux_flock, 1466 sizeof(linux_flock)); 1467 if (error) 1468 return (error); 1469 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1470 return (kern_fcntl(td, args->fd, F_SETLKW, 1471 (intptr_t)&bsd_flock)); 1472 } 1473 1474 return (fcntl_common(td, args)); 1475 } 1476 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1477 1478 int 1479 linux_chown(struct thread *td, struct linux_chown_args *args) 1480 { 1481 char *path; 1482 int error; 1483 1484 LCONVPATHEXIST(td, args->path, &path); 1485 1486 #ifdef DEBUG 1487 if (ldebug(chown)) 1488 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid); 1489 #endif 1490 error = kern_chown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1491 LFREEPATH(path); 1492 return (error); 1493 } 1494 1495 int 1496 linux_fchownat(struct thread *td, struct linux_fchownat_args *args) 1497 { 1498 char *path; 1499 int error, dfd, flag; 1500 1501 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW) 1502 return (EINVAL); 1503 1504 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 1505 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 1506 1507 #ifdef DEBUG 1508 if (ldebug(fchownat)) 1509 printf(ARGS(fchownat, "%s, %d, %d"), path, args->uid, args->gid); 1510 #endif 1511 1512 flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 : 1513 AT_SYMLINK_NOFOLLOW; 1514 error = kern_fchownat(td, dfd, path, UIO_SYSSPACE, args->uid, args->gid, 1515 flag); 1516 LFREEPATH(path); 1517 return (error); 1518 } 1519 1520 int 1521 linux_lchown(struct thread *td, struct linux_lchown_args *args) 1522 { 1523 char *path; 1524 int error; 1525 1526 LCONVPATHEXIST(td, args->path, &path); 1527 1528 #ifdef DEBUG 1529 if (ldebug(lchown)) 1530 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid); 1531 #endif 1532 error = kern_lchown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1533 LFREEPATH(path); 1534 return (error); 1535 } 1536 1537 static int 1538 convert_fadvice(int advice) 1539 { 1540 switch (advice) { 1541 case LINUX_POSIX_FADV_NORMAL: 1542 return (POSIX_FADV_NORMAL); 1543 case LINUX_POSIX_FADV_RANDOM: 1544 return (POSIX_FADV_RANDOM); 1545 case LINUX_POSIX_FADV_SEQUENTIAL: 1546 return (POSIX_FADV_SEQUENTIAL); 1547 case LINUX_POSIX_FADV_WILLNEED: 1548 return (POSIX_FADV_WILLNEED); 1549 case LINUX_POSIX_FADV_DONTNEED: 1550 return (POSIX_FADV_DONTNEED); 1551 case LINUX_POSIX_FADV_NOREUSE: 1552 return (POSIX_FADV_NOREUSE); 1553 default: 1554 return (-1); 1555 } 1556 } 1557 1558 int 1559 linux_fadvise64(struct thread *td, struct linux_fadvise64_args *args) 1560 { 1561 int advice; 1562 1563 advice = convert_fadvice(args->advice); 1564 if (advice == -1) 1565 return (EINVAL); 1566 return (kern_posix_fadvise(td, args->fd, args->offset, args->len, 1567 advice)); 1568 } 1569 1570 int 1571 linux_fadvise64_64(struct thread *td, struct linux_fadvise64_64_args *args) 1572 { 1573 int advice; 1574 1575 advice = convert_fadvice(args->advice); 1576 if (advice == -1) 1577 return (EINVAL); 1578 return (kern_posix_fadvise(td, args->fd, args->offset, args->len, 1579 advice)); 1580 } 1581 1582 int 1583 linux_pipe(struct thread *td, struct linux_pipe_args *args) 1584 { 1585 int fildes[2]; 1586 int error; 1587 1588 #ifdef DEBUG 1589 if (ldebug(pipe)) 1590 printf(ARGS(pipe, "*")); 1591 #endif 1592 1593 error = do_pipe(td, fildes, 0); 1594 if (error) 1595 return (error); 1596 1597 /* XXX: Close descriptors on error. */ 1598 return (copyout(fildes, args->pipefds, sizeof(fildes))); 1599 } 1600 1601 int 1602 linux_pipe2(struct thread *td, struct linux_pipe2_args *args) 1603 { 1604 int fildes[2]; 1605 int error, flags; 1606 1607 #ifdef DEBUG 1608 if (ldebug(pipe2)) 1609 printf(ARGS(pipe2, "*, %d"), args->flags); 1610 #endif 1611 1612 if ((args->flags & ~(LINUX_O_NONBLOCK | LINUX_O_CLOEXEC)) != 0) 1613 return (EINVAL); 1614 1615 flags = 0; 1616 if ((args->flags & LINUX_O_NONBLOCK) != 0) 1617 flags |= O_NONBLOCK; 1618 if ((args->flags & LINUX_O_CLOEXEC) != 0) 1619 flags |= O_CLOEXEC; 1620 error = do_pipe(td, fildes, flags); 1621 if (error) 1622 return (error); 1623 1624 /* XXX: Close descriptors on error. */ 1625 return (copyout(fildes, args->pipefds, sizeof(fildes))); 1626 } 1627