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