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/capsicum.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 #ifdef COMPAT_LINUX32 59 #include <machine/../linux32/linux.h> 60 #include <machine/../linux32/linux32_proto.h> 61 #else 62 #include <machine/../linux/linux.h> 63 #include <machine/../linux/linux_proto.h> 64 #endif 65 #include <compat/linux/linux_misc.h> 66 #include <compat/linux/linux_util.h> 67 #include <compat/linux/linux_file.h> 68 69 int 70 linux_creat(struct thread *td, struct linux_creat_args *args) 71 { 72 char *path; 73 int error; 74 75 LCONVPATHEXIST(td, args->path, &path); 76 77 #ifdef DEBUG 78 if (ldebug(creat)) 79 printf(ARGS(creat, "%s, %d"), path, args->mode); 80 #endif 81 error = kern_openat(td, AT_FDCWD, path, UIO_SYSSPACE, 82 O_WRONLY | O_CREAT | O_TRUNC, args->mode); 83 LFREEPATH(path); 84 return (error); 85 } 86 87 88 static int 89 linux_common_open(struct thread *td, int dirfd, char *path, int l_flags, int mode) 90 { 91 cap_rights_t rights; 92 struct proc *p = td->td_proc; 93 struct file *fp; 94 int fd; 95 int bsd_flags, error; 96 97 bsd_flags = 0; 98 switch (l_flags & LINUX_O_ACCMODE) { 99 case LINUX_O_WRONLY: 100 bsd_flags |= O_WRONLY; 101 break; 102 case LINUX_O_RDWR: 103 bsd_flags |= O_RDWR; 104 break; 105 default: 106 bsd_flags |= O_RDONLY; 107 } 108 if (l_flags & LINUX_O_NDELAY) 109 bsd_flags |= O_NONBLOCK; 110 if (l_flags & LINUX_O_APPEND) 111 bsd_flags |= O_APPEND; 112 if (l_flags & LINUX_O_SYNC) 113 bsd_flags |= O_FSYNC; 114 if (l_flags & LINUX_O_NONBLOCK) 115 bsd_flags |= O_NONBLOCK; 116 if (l_flags & LINUX_FASYNC) 117 bsd_flags |= O_ASYNC; 118 if (l_flags & LINUX_O_CREAT) 119 bsd_flags |= O_CREAT; 120 if (l_flags & LINUX_O_TRUNC) 121 bsd_flags |= O_TRUNC; 122 if (l_flags & LINUX_O_EXCL) 123 bsd_flags |= O_EXCL; 124 if (l_flags & LINUX_O_NOCTTY) 125 bsd_flags |= O_NOCTTY; 126 if (l_flags & LINUX_O_DIRECT) 127 bsd_flags |= O_DIRECT; 128 if (l_flags & LINUX_O_NOFOLLOW) 129 bsd_flags |= O_NOFOLLOW; 130 if (l_flags & LINUX_O_DIRECTORY) 131 bsd_flags |= O_DIRECTORY; 132 /* XXX LINUX_O_NOATIME: unable to be easily implemented. */ 133 134 error = kern_openat(td, dirfd, path, UIO_SYSSPACE, bsd_flags, mode); 135 if (error != 0) 136 goto done; 137 138 if (bsd_flags & O_NOCTTY) 139 goto done; 140 141 /* 142 * XXX In between kern_open() and fget(), another process 143 * having the same filedesc could use that fd without 144 * checking below. 145 */ 146 fd = td->td_retval[0]; 147 if (fget(td, fd, cap_rights_init(&rights, CAP_IOCTL), &fp) == 0) { 148 if (fp->f_type != DTYPE_VNODE) { 149 fdrop(fp, td); 150 goto done; 151 } 152 sx_slock(&proctree_lock); 153 PROC_LOCK(p); 154 if (SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 155 PROC_UNLOCK(p); 156 sx_sunlock(&proctree_lock); 157 /* XXXPJD: Verify if TIOCSCTTY is allowed. */ 158 (void) fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, 159 td->td_ucred, td); 160 } else { 161 PROC_UNLOCK(p); 162 sx_sunlock(&proctree_lock); 163 } 164 fdrop(fp, td); 165 } 166 167 done: 168 #ifdef DEBUG 169 if (ldebug(open)) 170 printf(LMSG("open returns error %d"), error); 171 #endif 172 LFREEPATH(path); 173 return (error); 174 } 175 176 int 177 linux_openat(struct thread *td, struct linux_openat_args *args) 178 { 179 char *path; 180 int dfd; 181 182 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 183 if (args->flags & LINUX_O_CREAT) 184 LCONVPATH_AT(td, args->filename, &path, 1, dfd); 185 else 186 LCONVPATH_AT(td, args->filename, &path, 0, dfd); 187 #ifdef DEBUG 188 if (ldebug(openat)) 189 printf(ARGS(openat, "%i, %s, 0x%x, 0x%x"), args->dfd, 190 path, args->flags, args->mode); 191 #endif 192 return (linux_common_open(td, dfd, path, args->flags, args->mode)); 193 } 194 195 int 196 linux_open(struct thread *td, struct linux_open_args *args) 197 { 198 char *path; 199 200 if (args->flags & LINUX_O_CREAT) 201 LCONVPATHCREAT(td, args->path, &path); 202 else 203 LCONVPATHEXIST(td, args->path, &path); 204 205 #ifdef DEBUG 206 if (ldebug(open)) 207 printf(ARGS(open, "%s, 0x%x, 0x%x"), 208 path, args->flags, args->mode); 209 #endif 210 211 return (linux_common_open(td, AT_FDCWD, path, args->flags, args->mode)); 212 } 213 214 int 215 linux_lseek(struct thread *td, struct linux_lseek_args *args) 216 { 217 218 struct lseek_args /* { 219 int fd; 220 int pad; 221 off_t offset; 222 int whence; 223 } */ tmp_args; 224 int error; 225 226 #ifdef DEBUG 227 if (ldebug(lseek)) 228 printf(ARGS(lseek, "%d, %ld, %d"), 229 args->fdes, (long)args->off, args->whence); 230 #endif 231 tmp_args.fd = args->fdes; 232 tmp_args.offset = (off_t)args->off; 233 tmp_args.whence = args->whence; 234 error = sys_lseek(td, &tmp_args); 235 return error; 236 } 237 238 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 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 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 278 279 /* 280 * Note that linux_getdents(2) and linux_getdents64(2) have the same 281 * arguments. They only differ in the definition of struct dirent they 282 * operate on. We use this to common the code, with the exception of 283 * accessing struct dirent. Note that linux_readdir(2) is implemented 284 * by means of linux_getdents(2). In this case we never operate on 285 * struct dirent64 and thus don't need to handle it... 286 */ 287 288 struct l_dirent { 289 l_ulong d_ino; 290 l_off_t d_off; 291 l_ushort d_reclen; 292 char d_name[LINUX_NAME_MAX + 1]; 293 }; 294 295 struct l_dirent64 { 296 uint64_t d_ino; 297 int64_t d_off; 298 l_ushort d_reclen; 299 u_char d_type; 300 char d_name[LINUX_NAME_MAX + 1]; 301 }; 302 303 /* 304 * Linux uses the last byte in the dirent buffer to store d_type, 305 * at least glibc-2.7 requires it. That is why l_dirent is padded with 2 bytes. 306 */ 307 #define LINUX_RECLEN(namlen) \ 308 roundup((offsetof(struct l_dirent, d_name) + (namlen) + 2), \ 309 sizeof(l_ulong)) 310 311 #define LINUX_RECLEN64(namlen) \ 312 roundup((offsetof(struct l_dirent64, d_name) + (namlen) + 1), \ 313 sizeof(uint64_t)) 314 315 #define LINUX_MAXRECLEN max(LINUX_RECLEN(LINUX_NAME_MAX), \ 316 LINUX_RECLEN64(LINUX_NAME_MAX)) 317 #define LINUX_DIRBLKSIZ 512 318 319 static int 320 getdents_common(struct thread *td, struct linux_getdents64_args *args, 321 int is64bit) 322 { 323 struct dirent *bdp; 324 struct vnode *vp; 325 caddr_t inp, buf; /* BSD-format */ 326 int len, reclen; /* BSD-format */ 327 caddr_t outp; /* Linux-format */ 328 int resid, linuxreclen=0; /* Linux-format */ 329 caddr_t lbuf; /* Linux-format */ 330 cap_rights_t rights; 331 struct file *fp; 332 struct uio auio; 333 struct iovec aiov; 334 off_t off; 335 struct l_dirent *linux_dirent; 336 struct l_dirent64 *linux_dirent64; 337 int buflen, error, eofflag, nbytes, justone; 338 u_long *cookies = NULL, *cookiep; 339 int ncookies; 340 341 nbytes = args->count; 342 if (nbytes == 1) { 343 /* readdir(2) case. Always struct dirent. */ 344 if (is64bit) 345 return (EINVAL); 346 nbytes = sizeof(*linux_dirent); 347 justone = 1; 348 } else 349 justone = 0; 350 351 error = getvnode(td, args->fd, cap_rights_init(&rights, CAP_READ), &fp); 352 if (error != 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 if (vp->v_type != VDIR) { 363 foffset_unlock(fp, off, 0); 364 fdrop(fp, td); 365 return (EINVAL); 366 } 367 368 369 buflen = max(LINUX_DIRBLKSIZ, nbytes); 370 buflen = min(buflen, MAXBSIZE); 371 buf = malloc(buflen, M_LINUX, M_WAITOK); 372 lbuf = malloc(LINUX_MAXRECLEN, M_LINUX, M_WAITOK | M_ZERO); 373 vn_lock(vp, LK_SHARED | LK_RETRY); 374 375 aiov.iov_base = buf; 376 aiov.iov_len = buflen; 377 auio.uio_iov = &aiov; 378 auio.uio_iovcnt = 1; 379 auio.uio_rw = UIO_READ; 380 auio.uio_segflg = UIO_SYSSPACE; 381 auio.uio_td = td; 382 auio.uio_resid = buflen; 383 auio.uio_offset = off; 384 385 #ifdef MAC 386 /* 387 * Do directory search MAC check using non-cached credentials. 388 */ 389 if ((error = mac_vnode_check_readdir(td->td_ucred, vp))) 390 goto out; 391 #endif /* MAC */ 392 if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, 393 &cookies))) 394 goto out; 395 396 inp = buf; 397 outp = (caddr_t)args->dirent; 398 resid = nbytes; 399 if ((len = buflen - auio.uio_resid) <= 0) 400 goto eof; 401 402 cookiep = cookies; 403 404 if (cookies) { 405 /* 406 * When using cookies, the vfs has the option of reading from 407 * a different offset than that supplied (UFS truncates the 408 * offset to a block boundary to make sure that it never reads 409 * partway through a directory entry, even if the directory 410 * has been compacted). 411 */ 412 while (len > 0 && ncookies > 0 && *cookiep <= off) { 413 bdp = (struct dirent *) inp; 414 len -= bdp->d_reclen; 415 inp += bdp->d_reclen; 416 cookiep++; 417 ncookies--; 418 } 419 } 420 421 while (len > 0) { 422 if (cookiep && ncookies == 0) 423 break; 424 bdp = (struct dirent *) inp; 425 reclen = bdp->d_reclen; 426 if (reclen & 3) { 427 error = EFAULT; 428 goto out; 429 } 430 431 if (bdp->d_fileno == 0) { 432 inp += reclen; 433 if (cookiep) { 434 off = *cookiep++; 435 ncookies--; 436 } else 437 off += reclen; 438 439 len -= reclen; 440 continue; 441 } 442 443 linuxreclen = (is64bit) 444 ? LINUX_RECLEN64(bdp->d_namlen) 445 : LINUX_RECLEN(bdp->d_namlen); 446 447 if (reclen > len || resid < linuxreclen) { 448 outp++; 449 break; 450 } 451 452 if (justone) { 453 /* readdir(2) case. */ 454 linux_dirent = (struct l_dirent*)lbuf; 455 linux_dirent->d_ino = bdp->d_fileno; 456 linux_dirent->d_off = (l_off_t)linuxreclen; 457 linux_dirent->d_reclen = (l_ushort)bdp->d_namlen; 458 strlcpy(linux_dirent->d_name, bdp->d_name, 459 linuxreclen - offsetof(struct l_dirent, d_name)); 460 error = copyout(linux_dirent, outp, linuxreclen); 461 } 462 if (is64bit) { 463 linux_dirent64 = (struct l_dirent64*)lbuf; 464 linux_dirent64->d_ino = bdp->d_fileno; 465 linux_dirent64->d_off = (cookiep) 466 ? (l_off_t)*cookiep 467 : (l_off_t)(off + reclen); 468 linux_dirent64->d_reclen = (l_ushort)linuxreclen; 469 linux_dirent64->d_type = bdp->d_type; 470 strlcpy(linux_dirent64->d_name, bdp->d_name, 471 linuxreclen - offsetof(struct l_dirent64, d_name)); 472 error = copyout(linux_dirent64, outp, linuxreclen); 473 } else if (!justone) { 474 linux_dirent = (struct l_dirent*)lbuf; 475 linux_dirent->d_ino = bdp->d_fileno; 476 linux_dirent->d_off = (cookiep) 477 ? (l_off_t)*cookiep 478 : (l_off_t)(off + reclen); 479 linux_dirent->d_reclen = (l_ushort)linuxreclen; 480 /* 481 * Copy d_type to last byte of l_dirent buffer 482 */ 483 lbuf[linuxreclen-1] = bdp->d_type; 484 strlcpy(linux_dirent->d_name, bdp->d_name, 485 linuxreclen - offsetof(struct l_dirent, d_name)-1); 486 error = copyout(linux_dirent, outp, linuxreclen); 487 } 488 489 if (error) 490 goto out; 491 492 inp += reclen; 493 if (cookiep) { 494 off = *cookiep++; 495 ncookies--; 496 } else 497 off += reclen; 498 499 outp += linuxreclen; 500 resid -= linuxreclen; 501 len -= reclen; 502 if (justone) 503 break; 504 } 505 506 if (outp == (caddr_t)args->dirent) { 507 nbytes = resid; 508 goto eof; 509 } 510 511 if (justone) 512 nbytes = resid + linuxreclen; 513 514 eof: 515 td->td_retval[0] = nbytes - resid; 516 517 out: 518 free(cookies, M_TEMP); 519 520 VOP_UNLOCK(vp, 0); 521 foffset_unlock(fp, off, 0); 522 fdrop(fp, td); 523 free(buf, M_LINUX); 524 free(lbuf, M_LINUX); 525 return (error); 526 } 527 528 int 529 linux_getdents(struct thread *td, struct linux_getdents_args *args) 530 { 531 532 #ifdef DEBUG 533 if (ldebug(getdents)) 534 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count); 535 #endif 536 537 return (getdents_common(td, (struct linux_getdents64_args*)args, 0)); 538 } 539 540 int 541 linux_getdents64(struct thread *td, struct linux_getdents64_args *args) 542 { 543 544 #ifdef DEBUG 545 if (ldebug(getdents64)) 546 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count); 547 #endif 548 549 return (getdents_common(td, args, 1)); 550 } 551 552 /* 553 * These exist mainly for hooks for doing /compat/linux translation. 554 */ 555 556 int 557 linux_access(struct thread *td, struct linux_access_args *args) 558 { 559 char *path; 560 int error; 561 562 /* linux convention */ 563 if (args->amode & ~(F_OK | X_OK | W_OK | R_OK)) 564 return (EINVAL); 565 566 LCONVPATHEXIST(td, args->path, &path); 567 568 #ifdef DEBUG 569 if (ldebug(access)) 570 printf(ARGS(access, "%s, %d"), path, args->amode); 571 #endif 572 error = kern_accessat(td, AT_FDCWD, path, UIO_SYSSPACE, 0, 573 args->amode); 574 LFREEPATH(path); 575 576 return (error); 577 } 578 579 int 580 linux_faccessat(struct thread *td, struct linux_faccessat_args *args) 581 { 582 char *path; 583 int error, dfd; 584 585 /* linux convention */ 586 if (args->amode & ~(F_OK | X_OK | W_OK | R_OK)) 587 return (EINVAL); 588 589 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 590 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 591 592 #ifdef DEBUG 593 if (ldebug(access)) 594 printf(ARGS(access, "%s, %d"), path, args->amode); 595 #endif 596 597 error = kern_accessat(td, dfd, path, UIO_SYSSPACE, 0, args->amode); 598 LFREEPATH(path); 599 600 return (error); 601 } 602 603 int 604 linux_unlink(struct thread *td, struct linux_unlink_args *args) 605 { 606 char *path; 607 int error; 608 struct stat st; 609 610 LCONVPATHEXIST(td, args->path, &path); 611 612 #ifdef DEBUG 613 if (ldebug(unlink)) 614 printf(ARGS(unlink, "%s"), path); 615 #endif 616 617 error = kern_unlinkat(td, AT_FDCWD, path, UIO_SYSSPACE, 0); 618 if (error == EPERM) { 619 /* Introduce POSIX noncompliant behaviour of Linux */ 620 if (kern_statat(td, 0, AT_FDCWD, path, UIO_SYSSPACE, &st, 621 NULL) == 0) { 622 if (S_ISDIR(st.st_mode)) 623 error = EISDIR; 624 } 625 } 626 LFREEPATH(path); 627 return (error); 628 } 629 630 int 631 linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args) 632 { 633 char *path; 634 int error, dfd; 635 struct stat st; 636 637 if (args->flag & ~LINUX_AT_REMOVEDIR) 638 return (EINVAL); 639 640 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 641 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); 642 643 #ifdef DEBUG 644 if (ldebug(unlinkat)) 645 printf(ARGS(unlinkat, "%s"), path); 646 #endif 647 648 if (args->flag & LINUX_AT_REMOVEDIR) 649 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE); 650 else 651 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE, 0); 652 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) { 653 /* Introduce POSIX noncompliant behaviour of Linux */ 654 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path, 655 UIO_SYSSPACE, &st, NULL) == 0 && S_ISDIR(st.st_mode)) 656 error = EISDIR; 657 } 658 LFREEPATH(path); 659 return (error); 660 } 661 int 662 linux_chdir(struct thread *td, struct linux_chdir_args *args) 663 { 664 char *path; 665 int error; 666 667 LCONVPATHEXIST(td, args->path, &path); 668 669 #ifdef DEBUG 670 if (ldebug(chdir)) 671 printf(ARGS(chdir, "%s"), path); 672 #endif 673 error = kern_chdir(td, path, UIO_SYSSPACE); 674 LFREEPATH(path); 675 return (error); 676 } 677 678 int 679 linux_chmod(struct thread *td, struct linux_chmod_args *args) 680 { 681 char *path; 682 int error; 683 684 LCONVPATHEXIST(td, args->path, &path); 685 686 #ifdef DEBUG 687 if (ldebug(chmod)) 688 printf(ARGS(chmod, "%s, %d"), path, args->mode); 689 #endif 690 error = kern_fchmodat(td, AT_FDCWD, path, UIO_SYSSPACE, 691 args->mode, 0); 692 LFREEPATH(path); 693 return (error); 694 } 695 696 int 697 linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args) 698 { 699 char *path; 700 int error, dfd; 701 702 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 703 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 704 705 #ifdef DEBUG 706 if (ldebug(fchmodat)) 707 printf(ARGS(fchmodat, "%s, %d"), path, args->mode); 708 #endif 709 710 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0); 711 LFREEPATH(path); 712 return (error); 713 } 714 715 int 716 linux_mkdir(struct thread *td, struct linux_mkdir_args *args) 717 { 718 char *path; 719 int error; 720 721 LCONVPATHCREAT(td, args->path, &path); 722 723 #ifdef DEBUG 724 if (ldebug(mkdir)) 725 printf(ARGS(mkdir, "%s, %d"), path, args->mode); 726 #endif 727 error = kern_mkdirat(td, AT_FDCWD, path, UIO_SYSSPACE, args->mode); 728 LFREEPATH(path); 729 return (error); 730 } 731 732 int 733 linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args) 734 { 735 char *path; 736 int error, dfd; 737 738 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 739 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd); 740 741 #ifdef DEBUG 742 if (ldebug(mkdirat)) 743 printf(ARGS(mkdirat, "%s, %d"), path, args->mode); 744 #endif 745 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode); 746 LFREEPATH(path); 747 return (error); 748 } 749 750 int 751 linux_rmdir(struct thread *td, struct linux_rmdir_args *args) 752 { 753 char *path; 754 int error; 755 756 LCONVPATHEXIST(td, args->path, &path); 757 758 #ifdef DEBUG 759 if (ldebug(rmdir)) 760 printf(ARGS(rmdir, "%s"), path); 761 #endif 762 error = kern_rmdirat(td, AT_FDCWD, path, UIO_SYSSPACE); 763 LFREEPATH(path); 764 return (error); 765 } 766 767 int 768 linux_rename(struct thread *td, struct linux_rename_args *args) 769 { 770 char *from, *to; 771 int error; 772 773 LCONVPATHEXIST(td, args->from, &from); 774 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 775 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 776 if (to == NULL) { 777 LFREEPATH(from); 778 return (error); 779 } 780 781 #ifdef DEBUG 782 if (ldebug(rename)) 783 printf(ARGS(rename, "%s, %s"), from, to); 784 #endif 785 error = kern_renameat(td, AT_FDCWD, from, AT_FDCWD, to, UIO_SYSSPACE); 786 LFREEPATH(from); 787 LFREEPATH(to); 788 return (error); 789 } 790 791 int 792 linux_renameat(struct thread *td, struct linux_renameat_args *args) 793 { 794 char *from, *to; 795 int error, olddfd, newdfd; 796 797 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 798 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 799 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd); 800 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 801 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 802 if (to == NULL) { 803 LFREEPATH(from); 804 return (error); 805 } 806 807 #ifdef DEBUG 808 if (ldebug(renameat)) 809 printf(ARGS(renameat, "%s, %s"), from, to); 810 #endif 811 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE); 812 LFREEPATH(from); 813 LFREEPATH(to); 814 return (error); 815 } 816 817 int 818 linux_symlink(struct thread *td, struct linux_symlink_args *args) 819 { 820 char *path, *to; 821 int error; 822 823 LCONVPATHEXIST(td, args->path, &path); 824 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 825 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 826 if (to == NULL) { 827 LFREEPATH(path); 828 return (error); 829 } 830 831 #ifdef DEBUG 832 if (ldebug(symlink)) 833 printf(ARGS(symlink, "%s, %s"), path, to); 834 #endif 835 error = kern_symlinkat(td, path, AT_FDCWD, to, UIO_SYSSPACE); 836 LFREEPATH(path); 837 LFREEPATH(to); 838 return (error); 839 } 840 841 int 842 linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args) 843 { 844 char *path, *to; 845 int error, dfd; 846 847 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 848 LCONVPATHEXIST_AT(td, args->oldname, &path, dfd); 849 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 850 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd); 851 if (to == NULL) { 852 LFREEPATH(path); 853 return (error); 854 } 855 856 #ifdef DEBUG 857 if (ldebug(symlinkat)) 858 printf(ARGS(symlinkat, "%s, %s"), path, to); 859 #endif 860 861 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE); 862 LFREEPATH(path); 863 LFREEPATH(to); 864 return (error); 865 } 866 867 int 868 linux_readlink(struct thread *td, struct linux_readlink_args *args) 869 { 870 char *name; 871 int error; 872 873 LCONVPATHEXIST(td, args->name, &name); 874 875 #ifdef DEBUG 876 if (ldebug(readlink)) 877 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf, 878 args->count); 879 #endif 880 error = kern_readlinkat(td, AT_FDCWD, name, UIO_SYSSPACE, 881 args->buf, UIO_USERSPACE, args->count); 882 LFREEPATH(name); 883 return (error); 884 } 885 886 int 887 linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args) 888 { 889 char *name; 890 int error, dfd; 891 892 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 893 LCONVPATHEXIST_AT(td, args->path, &name, dfd); 894 895 #ifdef DEBUG 896 if (ldebug(readlinkat)) 897 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf, 898 args->bufsiz); 899 #endif 900 901 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf, 902 UIO_USERSPACE, args->bufsiz); 903 LFREEPATH(name); 904 return (error); 905 } 906 907 int 908 linux_truncate(struct thread *td, struct linux_truncate_args *args) 909 { 910 char *path; 911 int error; 912 913 LCONVPATHEXIST(td, args->path, &path); 914 915 #ifdef DEBUG 916 if (ldebug(truncate)) 917 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length); 918 #endif 919 920 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 921 LFREEPATH(path); 922 return (error); 923 } 924 925 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 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 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 944 945 int 946 linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args) 947 { 948 struct ftruncate_args /* { 949 int fd; 950 int pad; 951 off_t length; 952 } */ nuap; 953 954 nuap.fd = args->fd; 955 nuap.length = args->length; 956 return (sys_ftruncate(td, &nuap)); 957 } 958 959 int 960 linux_link(struct thread *td, struct linux_link_args *args) 961 { 962 char *path, *to; 963 int error; 964 965 LCONVPATHEXIST(td, args->path, &path); 966 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 967 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 968 if (to == NULL) { 969 LFREEPATH(path); 970 return (error); 971 } 972 973 #ifdef DEBUG 974 if (ldebug(link)) 975 printf(ARGS(link, "%s, %s"), path, to); 976 #endif 977 error = kern_linkat(td, AT_FDCWD, AT_FDCWD, path, to, UIO_SYSSPACE, 978 FOLLOW); 979 LFREEPATH(path); 980 LFREEPATH(to); 981 return (error); 982 } 983 984 int 985 linux_linkat(struct thread *td, struct linux_linkat_args *args) 986 { 987 char *path, *to; 988 int error, olddfd, newdfd, follow; 989 990 if (args->flag & ~LINUX_AT_SYMLINK_FOLLOW) 991 return (EINVAL); 992 993 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 994 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 995 LCONVPATHEXIST_AT(td, args->oldname, &path, olddfd); 996 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 997 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 998 if (to == NULL) { 999 LFREEPATH(path); 1000 return (error); 1001 } 1002 1003 #ifdef DEBUG 1004 if (ldebug(linkat)) 1005 printf(ARGS(linkat, "%i, %s, %i, %s, %i"), args->olddfd, path, 1006 args->newdfd, to, args->flag); 1007 #endif 1008 1009 follow = (args->flag & LINUX_AT_SYMLINK_FOLLOW) == 0 ? NOFOLLOW : 1010 FOLLOW; 1011 error = kern_linkat(td, olddfd, newdfd, path, to, UIO_SYSSPACE, follow); 1012 LFREEPATH(path); 1013 LFREEPATH(to); 1014 return (error); 1015 } 1016 1017 int 1018 linux_fdatasync(td, uap) 1019 struct thread *td; 1020 struct linux_fdatasync_args *uap; 1021 { 1022 struct fsync_args bsd; 1023 1024 bsd.fd = uap->fd; 1025 return sys_fsync(td, &bsd); 1026 } 1027 1028 int 1029 linux_pread(td, uap) 1030 struct thread *td; 1031 struct linux_pread_args *uap; 1032 { 1033 struct pread_args bsd; 1034 cap_rights_t rights; 1035 struct vnode *vp; 1036 int error; 1037 1038 bsd.fd = uap->fd; 1039 bsd.buf = uap->buf; 1040 bsd.nbyte = uap->nbyte; 1041 bsd.offset = uap->offset; 1042 1043 error = sys_pread(td, &bsd); 1044 1045 if (error == 0) { 1046 /* This seems to violate POSIX but linux does it */ 1047 error = fgetvp(td, uap->fd, 1048 cap_rights_init(&rights, CAP_PREAD), &vp); 1049 if (error != 0) 1050 return (error); 1051 if (vp->v_type == VDIR) { 1052 vrele(vp); 1053 return (EISDIR); 1054 } 1055 vrele(vp); 1056 } 1057 1058 return (error); 1059 } 1060 1061 int 1062 linux_pwrite(td, uap) 1063 struct thread *td; 1064 struct linux_pwrite_args *uap; 1065 { 1066 struct pwrite_args bsd; 1067 1068 bsd.fd = uap->fd; 1069 bsd.buf = uap->buf; 1070 bsd.nbyte = uap->nbyte; 1071 bsd.offset = uap->offset; 1072 return sys_pwrite(td, &bsd); 1073 } 1074 1075 int 1076 linux_mount(struct thread *td, struct linux_mount_args *args) 1077 { 1078 char fstypename[MFSNAMELEN]; 1079 char mntonname[MNAMELEN], mntfromname[MNAMELEN]; 1080 int error; 1081 int fsflags; 1082 1083 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1, 1084 NULL); 1085 if (error) 1086 return (error); 1087 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL); 1088 if (error) 1089 return (error); 1090 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL); 1091 if (error) 1092 return (error); 1093 1094 #ifdef DEBUG 1095 if (ldebug(mount)) 1096 printf(ARGS(mount, "%s, %s, %s"), 1097 fstypename, mntfromname, mntonname); 1098 #endif 1099 1100 if (strcmp(fstypename, "ext2") == 0) { 1101 strcpy(fstypename, "ext2fs"); 1102 } else if (strcmp(fstypename, "proc") == 0) { 1103 strcpy(fstypename, "linprocfs"); 1104 } else if (strcmp(fstypename, "vfat") == 0) { 1105 strcpy(fstypename, "msdosfs"); 1106 } 1107 1108 fsflags = 0; 1109 1110 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) { 1111 /* 1112 * Linux SYNC flag is not included; the closest equivalent 1113 * FreeBSD has is !ASYNC, which is our default. 1114 */ 1115 if (args->rwflag & LINUX_MS_RDONLY) 1116 fsflags |= MNT_RDONLY; 1117 if (args->rwflag & LINUX_MS_NOSUID) 1118 fsflags |= MNT_NOSUID; 1119 if (args->rwflag & LINUX_MS_NOEXEC) 1120 fsflags |= MNT_NOEXEC; 1121 if (args->rwflag & LINUX_MS_REMOUNT) 1122 fsflags |= MNT_UPDATE; 1123 } 1124 1125 error = kernel_vmount(fsflags, 1126 "fstype", fstypename, 1127 "fspath", mntonname, 1128 "from", mntfromname, 1129 NULL); 1130 return (error); 1131 } 1132 1133 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1134 int 1135 linux_oldumount(struct thread *td, struct linux_oldumount_args *args) 1136 { 1137 struct linux_umount_args args2; 1138 1139 args2.path = args->path; 1140 args2.flags = 0; 1141 return (linux_umount(td, &args2)); 1142 } 1143 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1144 1145 int 1146 linux_umount(struct thread *td, struct linux_umount_args *args) 1147 { 1148 struct unmount_args bsd; 1149 1150 bsd.path = args->path; 1151 bsd.flags = args->flags; /* XXX correct? */ 1152 return (sys_unmount(td, &bsd)); 1153 } 1154 1155 /* 1156 * fcntl family of syscalls 1157 */ 1158 1159 struct l_flock { 1160 l_short l_type; 1161 l_short l_whence; 1162 l_off_t l_start; 1163 l_off_t l_len; 1164 l_pid_t l_pid; 1165 } 1166 #if defined(__amd64__) && defined(COMPAT_LINUX32) 1167 __packed 1168 #endif 1169 ; 1170 1171 static void 1172 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock) 1173 { 1174 switch (linux_flock->l_type) { 1175 case LINUX_F_RDLCK: 1176 bsd_flock->l_type = F_RDLCK; 1177 break; 1178 case LINUX_F_WRLCK: 1179 bsd_flock->l_type = F_WRLCK; 1180 break; 1181 case LINUX_F_UNLCK: 1182 bsd_flock->l_type = F_UNLCK; 1183 break; 1184 default: 1185 bsd_flock->l_type = -1; 1186 break; 1187 } 1188 bsd_flock->l_whence = linux_flock->l_whence; 1189 bsd_flock->l_start = (off_t)linux_flock->l_start; 1190 bsd_flock->l_len = (off_t)linux_flock->l_len; 1191 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1192 bsd_flock->l_sysid = 0; 1193 } 1194 1195 static void 1196 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock) 1197 { 1198 switch (bsd_flock->l_type) { 1199 case F_RDLCK: 1200 linux_flock->l_type = LINUX_F_RDLCK; 1201 break; 1202 case F_WRLCK: 1203 linux_flock->l_type = LINUX_F_WRLCK; 1204 break; 1205 case F_UNLCK: 1206 linux_flock->l_type = LINUX_F_UNLCK; 1207 break; 1208 } 1209 linux_flock->l_whence = bsd_flock->l_whence; 1210 linux_flock->l_start = (l_off_t)bsd_flock->l_start; 1211 linux_flock->l_len = (l_off_t)bsd_flock->l_len; 1212 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1213 } 1214 1215 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1216 struct l_flock64 { 1217 l_short l_type; 1218 l_short l_whence; 1219 l_loff_t l_start; 1220 l_loff_t l_len; 1221 l_pid_t l_pid; 1222 } 1223 #if defined(__amd64__) && defined(COMPAT_LINUX32) 1224 __packed 1225 #endif 1226 ; 1227 1228 static void 1229 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock) 1230 { 1231 switch (linux_flock->l_type) { 1232 case LINUX_F_RDLCK: 1233 bsd_flock->l_type = F_RDLCK; 1234 break; 1235 case LINUX_F_WRLCK: 1236 bsd_flock->l_type = F_WRLCK; 1237 break; 1238 case LINUX_F_UNLCK: 1239 bsd_flock->l_type = F_UNLCK; 1240 break; 1241 default: 1242 bsd_flock->l_type = -1; 1243 break; 1244 } 1245 bsd_flock->l_whence = linux_flock->l_whence; 1246 bsd_flock->l_start = (off_t)linux_flock->l_start; 1247 bsd_flock->l_len = (off_t)linux_flock->l_len; 1248 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1249 bsd_flock->l_sysid = 0; 1250 } 1251 1252 static void 1253 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock) 1254 { 1255 switch (bsd_flock->l_type) { 1256 case F_RDLCK: 1257 linux_flock->l_type = LINUX_F_RDLCK; 1258 break; 1259 case F_WRLCK: 1260 linux_flock->l_type = LINUX_F_WRLCK; 1261 break; 1262 case F_UNLCK: 1263 linux_flock->l_type = LINUX_F_UNLCK; 1264 break; 1265 } 1266 linux_flock->l_whence = bsd_flock->l_whence; 1267 linux_flock->l_start = (l_loff_t)bsd_flock->l_start; 1268 linux_flock->l_len = (l_loff_t)bsd_flock->l_len; 1269 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1270 } 1271 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1272 1273 static int 1274 fcntl_common(struct thread *td, struct linux_fcntl_args *args) 1275 { 1276 struct l_flock linux_flock; 1277 struct flock bsd_flock; 1278 cap_rights_t rights; 1279 struct file *fp; 1280 long arg; 1281 int error, result; 1282 1283 switch (args->cmd) { 1284 case LINUX_F_DUPFD: 1285 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg)); 1286 1287 case LINUX_F_GETFD: 1288 return (kern_fcntl(td, args->fd, F_GETFD, 0)); 1289 1290 case LINUX_F_SETFD: 1291 return (kern_fcntl(td, args->fd, F_SETFD, args->arg)); 1292 1293 case LINUX_F_GETFL: 1294 error = kern_fcntl(td, args->fd, F_GETFL, 0); 1295 result = td->td_retval[0]; 1296 td->td_retval[0] = 0; 1297 if (result & O_RDONLY) 1298 td->td_retval[0] |= LINUX_O_RDONLY; 1299 if (result & O_WRONLY) 1300 td->td_retval[0] |= LINUX_O_WRONLY; 1301 if (result & O_RDWR) 1302 td->td_retval[0] |= LINUX_O_RDWR; 1303 if (result & O_NDELAY) 1304 td->td_retval[0] |= LINUX_O_NONBLOCK; 1305 if (result & O_APPEND) 1306 td->td_retval[0] |= LINUX_O_APPEND; 1307 if (result & O_FSYNC) 1308 td->td_retval[0] |= LINUX_O_SYNC; 1309 if (result & O_ASYNC) 1310 td->td_retval[0] |= LINUX_FASYNC; 1311 #ifdef LINUX_O_NOFOLLOW 1312 if (result & O_NOFOLLOW) 1313 td->td_retval[0] |= LINUX_O_NOFOLLOW; 1314 #endif 1315 #ifdef LINUX_O_DIRECT 1316 if (result & O_DIRECT) 1317 td->td_retval[0] |= LINUX_O_DIRECT; 1318 #endif 1319 return (error); 1320 1321 case LINUX_F_SETFL: 1322 arg = 0; 1323 if (args->arg & LINUX_O_NDELAY) 1324 arg |= O_NONBLOCK; 1325 if (args->arg & LINUX_O_APPEND) 1326 arg |= O_APPEND; 1327 if (args->arg & LINUX_O_SYNC) 1328 arg |= O_FSYNC; 1329 if (args->arg & LINUX_FASYNC) 1330 arg |= O_ASYNC; 1331 #ifdef LINUX_O_NOFOLLOW 1332 if (args->arg & LINUX_O_NOFOLLOW) 1333 arg |= O_NOFOLLOW; 1334 #endif 1335 #ifdef LINUX_O_DIRECT 1336 if (args->arg & LINUX_O_DIRECT) 1337 arg |= O_DIRECT; 1338 #endif 1339 return (kern_fcntl(td, args->fd, F_SETFL, arg)); 1340 1341 case LINUX_F_GETLK: 1342 error = copyin((void *)args->arg, &linux_flock, 1343 sizeof(linux_flock)); 1344 if (error) 1345 return (error); 1346 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1347 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1348 if (error) 1349 return (error); 1350 bsd_to_linux_flock(&bsd_flock, &linux_flock); 1351 return (copyout(&linux_flock, (void *)args->arg, 1352 sizeof(linux_flock))); 1353 1354 case LINUX_F_SETLK: 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 return (kern_fcntl(td, args->fd, F_SETLK, 1361 (intptr_t)&bsd_flock)); 1362 1363 case LINUX_F_SETLKW: 1364 error = copyin((void *)args->arg, &linux_flock, 1365 sizeof(linux_flock)); 1366 if (error) 1367 return (error); 1368 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1369 return (kern_fcntl(td, args->fd, F_SETLKW, 1370 (intptr_t)&bsd_flock)); 1371 1372 case LINUX_F_GETOWN: 1373 return (kern_fcntl(td, args->fd, F_GETOWN, 0)); 1374 1375 case LINUX_F_SETOWN: 1376 /* 1377 * XXX some Linux applications depend on F_SETOWN having no 1378 * significant effect for pipes (SIGIO is not delivered for 1379 * pipes under Linux-2.2.35 at least). 1380 */ 1381 error = fget(td, args->fd, 1382 cap_rights_init(&rights, CAP_FCNTL), &fp); 1383 if (error) 1384 return (error); 1385 if (fp->f_type == DTYPE_PIPE) { 1386 fdrop(fp, td); 1387 return (EINVAL); 1388 } 1389 fdrop(fp, td); 1390 1391 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg)); 1392 1393 case LINUX_F_DUPFD_CLOEXEC: 1394 return (kern_fcntl(td, args->fd, F_DUPFD_CLOEXEC, args->arg)); 1395 } 1396 1397 return (EINVAL); 1398 } 1399 1400 int 1401 linux_fcntl(struct thread *td, struct linux_fcntl_args *args) 1402 { 1403 1404 #ifdef DEBUG 1405 if (ldebug(fcntl)) 1406 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd); 1407 #endif 1408 1409 return (fcntl_common(td, args)); 1410 } 1411 1412 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1413 int 1414 linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args) 1415 { 1416 struct l_flock64 linux_flock; 1417 struct flock bsd_flock; 1418 struct linux_fcntl_args fcntl_args; 1419 int error; 1420 1421 #ifdef DEBUG 1422 if (ldebug(fcntl64)) 1423 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd); 1424 #endif 1425 1426 switch (args->cmd) { 1427 case LINUX_F_GETLK64: 1428 error = copyin((void *)args->arg, &linux_flock, 1429 sizeof(linux_flock)); 1430 if (error) 1431 return (error); 1432 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1433 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1434 if (error) 1435 return (error); 1436 bsd_to_linux_flock64(&bsd_flock, &linux_flock); 1437 return (copyout(&linux_flock, (void *)args->arg, 1438 sizeof(linux_flock))); 1439 1440 case LINUX_F_SETLK64: 1441 error = copyin((void *)args->arg, &linux_flock, 1442 sizeof(linux_flock)); 1443 if (error) 1444 return (error); 1445 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1446 return (kern_fcntl(td, args->fd, F_SETLK, 1447 (intptr_t)&bsd_flock)); 1448 1449 case LINUX_F_SETLKW64: 1450 error = copyin((void *)args->arg, &linux_flock, 1451 sizeof(linux_flock)); 1452 if (error) 1453 return (error); 1454 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1455 return (kern_fcntl(td, args->fd, F_SETLKW, 1456 (intptr_t)&bsd_flock)); 1457 } 1458 1459 fcntl_args.fd = args->fd; 1460 fcntl_args.cmd = args->cmd; 1461 fcntl_args.arg = args->arg; 1462 return (fcntl_common(td, &fcntl_args)); 1463 } 1464 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1465 1466 int 1467 linux_chown(struct thread *td, struct linux_chown_args *args) 1468 { 1469 char *path; 1470 int error; 1471 1472 LCONVPATHEXIST(td, args->path, &path); 1473 1474 #ifdef DEBUG 1475 if (ldebug(chown)) 1476 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid); 1477 #endif 1478 error = kern_fchownat(td, AT_FDCWD, path, UIO_SYSSPACE, args->uid, 1479 args->gid, 0); 1480 LFREEPATH(path); 1481 return (error); 1482 } 1483 1484 int 1485 linux_fchownat(struct thread *td, struct linux_fchownat_args *args) 1486 { 1487 char *path; 1488 int error, dfd, flag; 1489 1490 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW) 1491 return (EINVAL); 1492 1493 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 1494 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 1495 1496 #ifdef DEBUG 1497 if (ldebug(fchownat)) 1498 printf(ARGS(fchownat, "%s, %d, %d"), path, args->uid, args->gid); 1499 #endif 1500 1501 flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 : 1502 AT_SYMLINK_NOFOLLOW; 1503 error = kern_fchownat(td, dfd, path, UIO_SYSSPACE, args->uid, args->gid, 1504 flag); 1505 LFREEPATH(path); 1506 return (error); 1507 } 1508 1509 int 1510 linux_lchown(struct thread *td, struct linux_lchown_args *args) 1511 { 1512 char *path; 1513 int error; 1514 1515 LCONVPATHEXIST(td, args->path, &path); 1516 1517 #ifdef DEBUG 1518 if (ldebug(lchown)) 1519 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid); 1520 #endif 1521 error = kern_fchownat(td, AT_FDCWD, path, UIO_SYSSPACE, args->uid, 1522 args->gid, AT_SYMLINK_NOFOLLOW); 1523 LFREEPATH(path); 1524 return (error); 1525 } 1526 1527 static int 1528 convert_fadvice(int advice) 1529 { 1530 switch (advice) { 1531 case LINUX_POSIX_FADV_NORMAL: 1532 return (POSIX_FADV_NORMAL); 1533 case LINUX_POSIX_FADV_RANDOM: 1534 return (POSIX_FADV_RANDOM); 1535 case LINUX_POSIX_FADV_SEQUENTIAL: 1536 return (POSIX_FADV_SEQUENTIAL); 1537 case LINUX_POSIX_FADV_WILLNEED: 1538 return (POSIX_FADV_WILLNEED); 1539 case LINUX_POSIX_FADV_DONTNEED: 1540 return (POSIX_FADV_DONTNEED); 1541 case LINUX_POSIX_FADV_NOREUSE: 1542 return (POSIX_FADV_NOREUSE); 1543 default: 1544 return (-1); 1545 } 1546 } 1547 1548 int 1549 linux_fadvise64(struct thread *td, struct linux_fadvise64_args *args) 1550 { 1551 int advice; 1552 1553 advice = convert_fadvice(args->advice); 1554 if (advice == -1) 1555 return (EINVAL); 1556 return (kern_posix_fadvise(td, args->fd, args->offset, args->len, 1557 advice)); 1558 } 1559 1560 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1561 int 1562 linux_fadvise64_64(struct thread *td, struct linux_fadvise64_64_args *args) 1563 { 1564 int advice; 1565 1566 advice = convert_fadvice(args->advice); 1567 if (advice == -1) 1568 return (EINVAL); 1569 return (kern_posix_fadvise(td, args->fd, args->offset, args->len, 1570 advice)); 1571 } 1572 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1573 1574 int 1575 linux_pipe(struct thread *td, struct linux_pipe_args *args) 1576 { 1577 int fildes[2]; 1578 int error; 1579 1580 #ifdef DEBUG 1581 if (ldebug(pipe)) 1582 printf(ARGS(pipe, "*")); 1583 #endif 1584 1585 error = kern_pipe(td, fildes, 0, NULL, NULL); 1586 if (error) 1587 return (error); 1588 1589 /* XXX: Close descriptors on error. */ 1590 return (copyout(fildes, args->pipefds, sizeof(fildes))); 1591 } 1592 1593 int 1594 linux_pipe2(struct thread *td, struct linux_pipe2_args *args) 1595 { 1596 int fildes[2]; 1597 int error, flags; 1598 1599 #ifdef DEBUG 1600 if (ldebug(pipe2)) 1601 printf(ARGS(pipe2, "*, %d"), args->flags); 1602 #endif 1603 1604 if ((args->flags & ~(LINUX_O_NONBLOCK | LINUX_O_CLOEXEC)) != 0) 1605 return (EINVAL); 1606 1607 flags = 0; 1608 if ((args->flags & LINUX_O_NONBLOCK) != 0) 1609 flags |= O_NONBLOCK; 1610 if ((args->flags & LINUX_O_CLOEXEC) != 0) 1611 flags |= O_CLOEXEC; 1612 error = kern_pipe(td, fildes, flags, NULL, NULL); 1613 if (error) 1614 return (error); 1615 1616 /* XXX: Close descriptors on error. */ 1617 return (copyout(fildes, args->pipefds, sizeof(fildes))); 1618 } 1619 1620 int 1621 linux_dup3(struct thread *td, struct linux_dup3_args *args) 1622 { 1623 int cmd; 1624 intptr_t newfd; 1625 1626 if (args->oldfd == args->newfd) 1627 return (EINVAL); 1628 if ((args->flags & ~LINUX_O_CLOEXEC) != 0) 1629 return (EINVAL); 1630 if (args->flags & LINUX_O_CLOEXEC) 1631 cmd = F_DUP2FD_CLOEXEC; 1632 else 1633 cmd = F_DUP2FD; 1634 1635 newfd = args->newfd; 1636 return (kern_fcntl(td, args->oldfd, cmd, newfd)); 1637 } 1638 1639 int 1640 linux_fallocate(struct thread *td, struct linux_fallocate_args *args) 1641 { 1642 1643 /* 1644 * We emulate only posix_fallocate system call for which 1645 * mode should be 0. 1646 */ 1647 if (args->mode != 0) 1648 return (ENOSYS); 1649 1650 return (kern_posix_fallocate(td, args->fd, args->offset, 1651 args->len)); 1652 } 1653