linux_file.c revision 293521
1/*- 2 * Copyright (c) 1994-1995 S��ren Schmidt 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: stable/10/sys/compat/linux/linux_file.c 293521 2016-01-09 15:54:55Z dchagin $"); 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 69int 70linux_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_open(td, path, UIO_SYSSPACE, O_WRONLY | O_CREAT | O_TRUNC, 82 args->mode); 83 LFREEPATH(path); 84 return (error); 85} 86 87 88static int 89linux_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 167done: 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 176int 177linux_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 195int 196linux_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 214int 215linux_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)) 239int 240linux_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 267int 268linux_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 288struct 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 295struct 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 319static int 320getdents_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->td_proc->p_fd, args->fd, 352 cap_rights_init(&rights, CAP_READ), &fp); 353 if (error != 0) 354 return (error); 355 356 if ((fp->f_flag & FREAD) == 0) { 357 fdrop(fp, td); 358 return (EBADF); 359 } 360 361 off = foffset_lock(fp, 0); 362 vp = fp->f_vnode; 363 if (vp->v_type != VDIR) { 364 foffset_unlock(fp, off, 0); 365 fdrop(fp, td); 366 return (EINVAL); 367 } 368 369 370 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#ifdef MAC 387 /* 388 * Do directory search MAC check using non-cached credentials. 389 */ 390 if ((error = mac_vnode_check_readdir(td->td_ucred, vp))) 391 goto out; 392#endif /* MAC */ 393 if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, 394 &cookies))) 395 goto out; 396 397 inp = buf; 398 outp = (caddr_t)args->dirent; 399 resid = nbytes; 400 if ((len = buflen - auio.uio_resid) <= 0) 401 goto eof; 402 403 cookiep = cookies; 404 405 if (cookies) { 406 /* 407 * When using cookies, the vfs has the option of reading from 408 * a different offset than that supplied (UFS truncates the 409 * offset to a block boundary to make sure that it never reads 410 * partway through a directory entry, even if the directory 411 * has been compacted). 412 */ 413 while (len > 0 && ncookies > 0 && *cookiep <= off) { 414 bdp = (struct dirent *) inp; 415 len -= bdp->d_reclen; 416 inp += bdp->d_reclen; 417 cookiep++; 418 ncookies--; 419 } 420 } 421 422 while (len > 0) { 423 if (cookiep && ncookies == 0) 424 break; 425 bdp = (struct dirent *) inp; 426 reclen = bdp->d_reclen; 427 if (reclen & 3) { 428 error = EFAULT; 429 goto out; 430 } 431 432 if (bdp->d_fileno == 0) { 433 inp += reclen; 434 if (cookiep) { 435 off = *cookiep++; 436 ncookies--; 437 } else 438 off += reclen; 439 440 len -= reclen; 441 continue; 442 } 443 444 linuxreclen = (is64bit) 445 ? LINUX_RECLEN64(bdp->d_namlen) 446 : LINUX_RECLEN(bdp->d_namlen); 447 448 if (reclen > len || resid < linuxreclen) { 449 outp++; 450 break; 451 } 452 453 if (justone) { 454 /* readdir(2) case. */ 455 linux_dirent = (struct l_dirent*)lbuf; 456 linux_dirent->d_ino = bdp->d_fileno; 457 linux_dirent->d_off = (l_off_t)linuxreclen; 458 linux_dirent->d_reclen = (l_ushort)bdp->d_namlen; 459 strlcpy(linux_dirent->d_name, bdp->d_name, 460 linuxreclen - offsetof(struct l_dirent, d_name)); 461 error = copyout(linux_dirent, outp, linuxreclen); 462 } 463 if (is64bit) { 464 linux_dirent64 = (struct l_dirent64*)lbuf; 465 linux_dirent64->d_ino = bdp->d_fileno; 466 linux_dirent64->d_off = (cookiep) 467 ? (l_off_t)*cookiep 468 : (l_off_t)(off + reclen); 469 linux_dirent64->d_reclen = (l_ushort)linuxreclen; 470 linux_dirent64->d_type = bdp->d_type; 471 strlcpy(linux_dirent64->d_name, bdp->d_name, 472 linuxreclen - offsetof(struct l_dirent64, d_name)); 473 error = copyout(linux_dirent64, outp, linuxreclen); 474 } else if (!justone) { 475 linux_dirent = (struct l_dirent*)lbuf; 476 linux_dirent->d_ino = bdp->d_fileno; 477 linux_dirent->d_off = (cookiep) 478 ? (l_off_t)*cookiep 479 : (l_off_t)(off + reclen); 480 linux_dirent->d_reclen = (l_ushort)linuxreclen; 481 /* 482 * Copy d_type to last byte of l_dirent buffer 483 */ 484 lbuf[linuxreclen-1] = bdp->d_type; 485 strlcpy(linux_dirent->d_name, bdp->d_name, 486 linuxreclen - offsetof(struct l_dirent, d_name)-1); 487 error = copyout(linux_dirent, outp, linuxreclen); 488 } 489 490 if (error) 491 goto out; 492 493 inp += reclen; 494 if (cookiep) { 495 off = *cookiep++; 496 ncookies--; 497 } else 498 off += reclen; 499 500 outp += linuxreclen; 501 resid -= linuxreclen; 502 len -= reclen; 503 if (justone) 504 break; 505 } 506 507 if (outp == (caddr_t)args->dirent) { 508 nbytes = resid; 509 goto eof; 510 } 511 512 if (justone) 513 nbytes = resid + linuxreclen; 514 515eof: 516 td->td_retval[0] = nbytes - resid; 517 518out: 519 free(cookies, M_TEMP); 520 521 VOP_UNLOCK(vp, 0); 522 foffset_unlock(fp, off, 0); 523 fdrop(fp, td); 524 free(buf, M_TEMP); 525 free(lbuf, M_TEMP); 526 return (error); 527} 528 529int 530linux_getdents(struct thread *td, struct linux_getdents_args *args) 531{ 532 533#ifdef DEBUG 534 if (ldebug(getdents)) 535 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count); 536#endif 537 538 return (getdents_common(td, (struct linux_getdents64_args*)args, 0)); 539} 540 541int 542linux_getdents64(struct thread *td, struct linux_getdents64_args *args) 543{ 544 545#ifdef DEBUG 546 if (ldebug(getdents64)) 547 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count); 548#endif 549 550 return (getdents_common(td, args, 1)); 551} 552 553/* 554 * These exist mainly for hooks for doing /compat/linux translation. 555 */ 556 557int 558linux_access(struct thread *td, struct linux_access_args *args) 559{ 560 char *path; 561 int error; 562 563 /* linux convention */ 564 if (args->amode & ~(F_OK | X_OK | W_OK | R_OK)) 565 return (EINVAL); 566 567 LCONVPATHEXIST(td, args->path, &path); 568 569#ifdef DEBUG 570 if (ldebug(access)) 571 printf(ARGS(access, "%s, %d"), path, args->amode); 572#endif 573 error = kern_access(td, path, UIO_SYSSPACE, args->amode); 574 LFREEPATH(path); 575 576 return (error); 577} 578 579int 580linux_faccessat(struct thread *td, struct linux_faccessat_args *args) 581{ 582 char *path; 583 int error, dfd, flag; 584 585 if (args->flag & ~LINUX_AT_EACCESS) 586 return (EINVAL); 587 /* linux convention */ 588 if (args->amode & ~(F_OK | X_OK | W_OK | R_OK)) 589 return (EINVAL); 590 591 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 592 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 593 594#ifdef DEBUG 595 if (ldebug(access)) 596 printf(ARGS(access, "%s, %d"), path, args->amode); 597#endif 598 599 flag = (args->flag & LINUX_AT_EACCESS) == 0 ? 0 : AT_EACCESS; 600 error = kern_accessat(td, dfd, path, UIO_SYSSPACE, flag, args->amode); 601 LFREEPATH(path); 602 603 return (error); 604} 605 606int 607linux_unlink(struct thread *td, struct linux_unlink_args *args) 608{ 609 char *path; 610 int error; 611 struct stat st; 612 613 LCONVPATHEXIST(td, args->path, &path); 614 615#ifdef DEBUG 616 if (ldebug(unlink)) 617 printf(ARGS(unlink, "%s"), path); 618#endif 619 620 error = kern_unlink(td, path, UIO_SYSSPACE); 621 if (error == EPERM) 622 /* Introduce POSIX noncompliant behaviour of Linux */ 623 if (kern_stat(td, path, UIO_SYSSPACE, &st) == 0) 624 if (S_ISDIR(st.st_mode)) 625 error = EISDIR; 626 LFREEPATH(path); 627 return (error); 628} 629 630int 631linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args) 632{ 633 char *path; 634 int error, dfd; 635 struct stat st; 636 637 if (args->flag & ~LINUX_AT_REMOVEDIR) 638 return (EINVAL); 639 640 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 641 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); 642 643#ifdef DEBUG 644 if (ldebug(unlinkat)) 645 printf(ARGS(unlinkat, "%s"), path); 646#endif 647 648 if (args->flag & LINUX_AT_REMOVEDIR) 649 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE); 650 else 651 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE, 0); 652 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) { 653 /* Introduce POSIX noncompliant behaviour of Linux */ 654 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path, 655 UIO_SYSSPACE, &st) == 0 && S_ISDIR(st.st_mode)) 656 error = EISDIR; 657 } 658 LFREEPATH(path); 659 return (error); 660} 661int 662linux_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 678int 679linux_chmod(struct thread *td, struct linux_chmod_args *args) 680{ 681 char *path; 682 int error; 683 684 LCONVPATHEXIST(td, args->path, &path); 685 686#ifdef DEBUG 687 if (ldebug(chmod)) 688 printf(ARGS(chmod, "%s, %d"), path, args->mode); 689#endif 690 error = kern_chmod(td, path, UIO_SYSSPACE, args->mode); 691 LFREEPATH(path); 692 return (error); 693} 694 695int 696linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args) 697{ 698 char *path; 699 int error, dfd; 700 701 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 702 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 703 704#ifdef DEBUG 705 if (ldebug(fchmodat)) 706 printf(ARGS(fchmodat, "%s, %d"), path, args->mode); 707#endif 708 709 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0); 710 LFREEPATH(path); 711 return (error); 712} 713 714int 715linux_mkdir(struct thread *td, struct linux_mkdir_args *args) 716{ 717 char *path; 718 int error; 719 720 LCONVPATHCREAT(td, args->path, &path); 721 722#ifdef DEBUG 723 if (ldebug(mkdir)) 724 printf(ARGS(mkdir, "%s, %d"), path, args->mode); 725#endif 726 error = kern_mkdir(td, path, UIO_SYSSPACE, args->mode); 727 LFREEPATH(path); 728 return (error); 729} 730 731int 732linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args) 733{ 734 char *path; 735 int error, dfd; 736 737 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 738 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd); 739 740#ifdef DEBUG 741 if (ldebug(mkdirat)) 742 printf(ARGS(mkdirat, "%s, %d"), path, args->mode); 743#endif 744 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode); 745 LFREEPATH(path); 746 return (error); 747} 748 749int 750linux_rmdir(struct thread *td, struct linux_rmdir_args *args) 751{ 752 char *path; 753 int error; 754 755 LCONVPATHEXIST(td, args->path, &path); 756 757#ifdef DEBUG 758 if (ldebug(rmdir)) 759 printf(ARGS(rmdir, "%s"), path); 760#endif 761 error = kern_rmdir(td, path, UIO_SYSSPACE); 762 LFREEPATH(path); 763 return (error); 764} 765 766int 767linux_rename(struct thread *td, struct linux_rename_args *args) 768{ 769 char *from, *to; 770 int error; 771 772 LCONVPATHEXIST(td, args->from, &from); 773 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 774 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 775 if (to == NULL) { 776 LFREEPATH(from); 777 return (error); 778 } 779 780#ifdef DEBUG 781 if (ldebug(rename)) 782 printf(ARGS(rename, "%s, %s"), from, to); 783#endif 784 error = kern_rename(td, from, to, UIO_SYSSPACE); 785 LFREEPATH(from); 786 LFREEPATH(to); 787 return (error); 788} 789 790int 791linux_renameat(struct thread *td, struct linux_renameat_args *args) 792{ 793 char *from, *to; 794 int error, olddfd, newdfd; 795 796 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 797 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 798 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd); 799 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 800 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 801 if (to == NULL) { 802 LFREEPATH(from); 803 return (error); 804 } 805 806#ifdef DEBUG 807 if (ldebug(renameat)) 808 printf(ARGS(renameat, "%s, %s"), from, to); 809#endif 810 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE); 811 LFREEPATH(from); 812 LFREEPATH(to); 813 return (error); 814} 815 816int 817linux_symlink(struct thread *td, struct linux_symlink_args *args) 818{ 819 char *path, *to; 820 int error; 821 822 LCONVPATHEXIST(td, args->path, &path); 823 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 824 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 825 if (to == NULL) { 826 LFREEPATH(path); 827 return (error); 828 } 829 830#ifdef DEBUG 831 if (ldebug(symlink)) 832 printf(ARGS(symlink, "%s, %s"), path, to); 833#endif 834 error = kern_symlink(td, path, to, UIO_SYSSPACE); 835 LFREEPATH(path); 836 LFREEPATH(to); 837 return (error); 838} 839 840int 841linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args) 842{ 843 char *path, *to; 844 int error, dfd; 845 846 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 847 LCONVPATHEXIST_AT(td, args->oldname, &path, dfd); 848 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 849 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd); 850 if (to == NULL) { 851 LFREEPATH(path); 852 return (error); 853 } 854 855#ifdef DEBUG 856 if (ldebug(symlinkat)) 857 printf(ARGS(symlinkat, "%s, %s"), path, to); 858#endif 859 860 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE); 861 LFREEPATH(path); 862 LFREEPATH(to); 863 return (error); 864} 865 866int 867linux_readlink(struct thread *td, struct linux_readlink_args *args) 868{ 869 char *name; 870 int error; 871 872 LCONVPATHEXIST(td, args->name, &name); 873 874#ifdef DEBUG 875 if (ldebug(readlink)) 876 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf, 877 args->count); 878#endif 879 error = kern_readlink(td, name, UIO_SYSSPACE, args->buf, UIO_USERSPACE, 880 args->count); 881 LFREEPATH(name); 882 return (error); 883} 884 885int 886linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args) 887{ 888 char *name; 889 int error, dfd; 890 891 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 892 LCONVPATHEXIST_AT(td, args->path, &name, dfd); 893 894#ifdef DEBUG 895 if (ldebug(readlinkat)) 896 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf, 897 args->bufsiz); 898#endif 899 900 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf, 901 UIO_USERSPACE, args->bufsiz); 902 LFREEPATH(name); 903 return (error); 904} 905 906int 907linux_truncate(struct thread *td, struct linux_truncate_args *args) 908{ 909 char *path; 910 int error; 911 912 LCONVPATHEXIST(td, args->path, &path); 913 914#ifdef DEBUG 915 if (ldebug(truncate)) 916 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length); 917#endif 918 919 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 920 LFREEPATH(path); 921 return (error); 922} 923 924#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 925int 926linux_truncate64(struct thread *td, struct linux_truncate64_args *args) 927{ 928 char *path; 929 int error; 930 931 LCONVPATHEXIST(td, args->path, &path); 932 933#ifdef DEBUG 934 if (ldebug(truncate64)) 935 printf(ARGS(truncate64, "%s, %jd"), path, args->length); 936#endif 937 938 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 939 LFREEPATH(path); 940 return (error); 941} 942#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 943 944int 945linux_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 958int 959linux_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 982int 983linux_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 1015int 1016linux_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 1026int 1027linux_pread(td, uap) 1028 struct thread *td; 1029 struct linux_pread_args *uap; 1030{ 1031 struct pread_args bsd; 1032 cap_rights_t rights; 1033 struct vnode *vp; 1034 int error; 1035 1036 bsd.fd = uap->fd; 1037 bsd.buf = uap->buf; 1038 bsd.nbyte = uap->nbyte; 1039 bsd.offset = uap->offset; 1040 1041 error = sys_pread(td, &bsd); 1042 1043 if (error == 0) { 1044 /* This seems to violate POSIX but linux does it */ 1045 error = fgetvp(td, uap->fd, 1046 cap_rights_init(&rights, CAP_PREAD), &vp); 1047 if (error != 0) 1048 return (error); 1049 if (vp->v_type == VDIR) { 1050 vrele(vp); 1051 return (EISDIR); 1052 } 1053 vrele(vp); 1054 } 1055 1056 return (error); 1057} 1058 1059int 1060linux_pwrite(td, uap) 1061 struct thread *td; 1062 struct linux_pwrite_args *uap; 1063{ 1064 struct pwrite_args bsd; 1065 1066 bsd.fd = uap->fd; 1067 bsd.buf = uap->buf; 1068 bsd.nbyte = uap->nbyte; 1069 bsd.offset = uap->offset; 1070 return sys_pwrite(td, &bsd); 1071} 1072 1073int 1074linux_mount(struct thread *td, struct linux_mount_args *args) 1075{ 1076 char fstypename[MFSNAMELEN]; 1077 char mntonname[MNAMELEN], mntfromname[MNAMELEN]; 1078 int error; 1079 int fsflags; 1080 1081 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1, 1082 NULL); 1083 if (error) 1084 return (error); 1085 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL); 1086 if (error) 1087 return (error); 1088 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL); 1089 if (error) 1090 return (error); 1091 1092#ifdef DEBUG 1093 if (ldebug(mount)) 1094 printf(ARGS(mount, "%s, %s, %s"), 1095 fstypename, mntfromname, mntonname); 1096#endif 1097 1098 if (strcmp(fstypename, "ext2") == 0) { 1099 strcpy(fstypename, "ext2fs"); 1100 } else if (strcmp(fstypename, "proc") == 0) { 1101 strcpy(fstypename, "linprocfs"); 1102 } else if (strcmp(fstypename, "vfat") == 0) { 1103 strcpy(fstypename, "msdosfs"); 1104 } 1105 1106 fsflags = 0; 1107 1108 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) { 1109 /* 1110 * Linux SYNC flag is not included; the closest equivalent 1111 * FreeBSD has is !ASYNC, which is our default. 1112 */ 1113 if (args->rwflag & LINUX_MS_RDONLY) 1114 fsflags |= MNT_RDONLY; 1115 if (args->rwflag & LINUX_MS_NOSUID) 1116 fsflags |= MNT_NOSUID; 1117 if (args->rwflag & LINUX_MS_NOEXEC) 1118 fsflags |= MNT_NOEXEC; 1119 if (args->rwflag & LINUX_MS_REMOUNT) 1120 fsflags |= MNT_UPDATE; 1121 } 1122 1123 error = kernel_vmount(fsflags, 1124 "fstype", fstypename, 1125 "fspath", mntonname, 1126 "from", mntfromname, 1127 NULL); 1128 return (error); 1129} 1130 1131#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1132int 1133linux_oldumount(struct thread *td, struct linux_oldumount_args *args) 1134{ 1135 struct linux_umount_args args2; 1136 1137 args2.path = args->path; 1138 args2.flags = 0; 1139 return (linux_umount(td, &args2)); 1140} 1141#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1142 1143int 1144linux_umount(struct thread *td, struct linux_umount_args *args) 1145{ 1146 struct unmount_args bsd; 1147 1148 bsd.path = args->path; 1149 bsd.flags = args->flags; /* XXX correct? */ 1150 return (sys_unmount(td, &bsd)); 1151} 1152 1153/* 1154 * fcntl family of syscalls 1155 */ 1156 1157struct l_flock { 1158 l_short l_type; 1159 l_short l_whence; 1160 l_off_t l_start; 1161 l_off_t l_len; 1162 l_pid_t l_pid; 1163} 1164#if defined(__amd64__) && defined(COMPAT_LINUX32) 1165__packed 1166#endif 1167; 1168 1169static void 1170linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock) 1171{ 1172 switch (linux_flock->l_type) { 1173 case LINUX_F_RDLCK: 1174 bsd_flock->l_type = F_RDLCK; 1175 break; 1176 case LINUX_F_WRLCK: 1177 bsd_flock->l_type = F_WRLCK; 1178 break; 1179 case LINUX_F_UNLCK: 1180 bsd_flock->l_type = F_UNLCK; 1181 break; 1182 default: 1183 bsd_flock->l_type = -1; 1184 break; 1185 } 1186 bsd_flock->l_whence = linux_flock->l_whence; 1187 bsd_flock->l_start = (off_t)linux_flock->l_start; 1188 bsd_flock->l_len = (off_t)linux_flock->l_len; 1189 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1190 bsd_flock->l_sysid = 0; 1191} 1192 1193static void 1194bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock) 1195{ 1196 switch (bsd_flock->l_type) { 1197 case F_RDLCK: 1198 linux_flock->l_type = LINUX_F_RDLCK; 1199 break; 1200 case F_WRLCK: 1201 linux_flock->l_type = LINUX_F_WRLCK; 1202 break; 1203 case F_UNLCK: 1204 linux_flock->l_type = LINUX_F_UNLCK; 1205 break; 1206 } 1207 linux_flock->l_whence = bsd_flock->l_whence; 1208 linux_flock->l_start = (l_off_t)bsd_flock->l_start; 1209 linux_flock->l_len = (l_off_t)bsd_flock->l_len; 1210 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1211} 1212 1213#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1214struct l_flock64 { 1215 l_short l_type; 1216 l_short l_whence; 1217 l_loff_t l_start; 1218 l_loff_t l_len; 1219 l_pid_t l_pid; 1220} 1221#if defined(__amd64__) && defined(COMPAT_LINUX32) 1222__packed 1223#endif 1224; 1225 1226static void 1227linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock) 1228{ 1229 switch (linux_flock->l_type) { 1230 case LINUX_F_RDLCK: 1231 bsd_flock->l_type = F_RDLCK; 1232 break; 1233 case LINUX_F_WRLCK: 1234 bsd_flock->l_type = F_WRLCK; 1235 break; 1236 case LINUX_F_UNLCK: 1237 bsd_flock->l_type = F_UNLCK; 1238 break; 1239 default: 1240 bsd_flock->l_type = -1; 1241 break; 1242 } 1243 bsd_flock->l_whence = linux_flock->l_whence; 1244 bsd_flock->l_start = (off_t)linux_flock->l_start; 1245 bsd_flock->l_len = (off_t)linux_flock->l_len; 1246 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1247 bsd_flock->l_sysid = 0; 1248} 1249 1250static void 1251bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock) 1252{ 1253 switch (bsd_flock->l_type) { 1254 case F_RDLCK: 1255 linux_flock->l_type = LINUX_F_RDLCK; 1256 break; 1257 case F_WRLCK: 1258 linux_flock->l_type = LINUX_F_WRLCK; 1259 break; 1260 case F_UNLCK: 1261 linux_flock->l_type = LINUX_F_UNLCK; 1262 break; 1263 } 1264 linux_flock->l_whence = bsd_flock->l_whence; 1265 linux_flock->l_start = (l_loff_t)bsd_flock->l_start; 1266 linux_flock->l_len = (l_loff_t)bsd_flock->l_len; 1267 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1268} 1269#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1270 1271static int 1272fcntl_common(struct thread *td, struct linux_fcntl_args *args) 1273{ 1274 struct l_flock linux_flock; 1275 struct flock bsd_flock; 1276 cap_rights_t rights; 1277 struct file *fp; 1278 long arg; 1279 int error, result; 1280 1281 switch (args->cmd) { 1282 case LINUX_F_DUPFD: 1283 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg)); 1284 1285 case LINUX_F_GETFD: 1286 return (kern_fcntl(td, args->fd, F_GETFD, 0)); 1287 1288 case LINUX_F_SETFD: 1289 return (kern_fcntl(td, args->fd, F_SETFD, args->arg)); 1290 1291 case LINUX_F_GETFL: 1292 error = kern_fcntl(td, args->fd, F_GETFL, 0); 1293 result = td->td_retval[0]; 1294 td->td_retval[0] = 0; 1295 if (result & O_RDONLY) 1296 td->td_retval[0] |= LINUX_O_RDONLY; 1297 if (result & O_WRONLY) 1298 td->td_retval[0] |= LINUX_O_WRONLY; 1299 if (result & O_RDWR) 1300 td->td_retval[0] |= LINUX_O_RDWR; 1301 if (result & O_NDELAY) 1302 td->td_retval[0] |= LINUX_O_NONBLOCK; 1303 if (result & O_APPEND) 1304 td->td_retval[0] |= LINUX_O_APPEND; 1305 if (result & O_FSYNC) 1306 td->td_retval[0] |= LINUX_O_SYNC; 1307 if (result & O_ASYNC) 1308 td->td_retval[0] |= LINUX_FASYNC; 1309#ifdef LINUX_O_NOFOLLOW 1310 if (result & O_NOFOLLOW) 1311 td->td_retval[0] |= LINUX_O_NOFOLLOW; 1312#endif 1313#ifdef LINUX_O_DIRECT 1314 if (result & O_DIRECT) 1315 td->td_retval[0] |= LINUX_O_DIRECT; 1316#endif 1317 return (error); 1318 1319 case LINUX_F_SETFL: 1320 arg = 0; 1321 if (args->arg & LINUX_O_NDELAY) 1322 arg |= O_NONBLOCK; 1323 if (args->arg & LINUX_O_APPEND) 1324 arg |= O_APPEND; 1325 if (args->arg & LINUX_O_SYNC) 1326 arg |= O_FSYNC; 1327 if (args->arg & LINUX_FASYNC) 1328 arg |= O_ASYNC; 1329#ifdef LINUX_O_NOFOLLOW 1330 if (args->arg & LINUX_O_NOFOLLOW) 1331 arg |= O_NOFOLLOW; 1332#endif 1333#ifdef LINUX_O_DIRECT 1334 if (args->arg & LINUX_O_DIRECT) 1335 arg |= O_DIRECT; 1336#endif 1337 return (kern_fcntl(td, args->fd, F_SETFL, arg)); 1338 1339 case LINUX_F_GETLK: 1340 error = copyin((void *)args->arg, &linux_flock, 1341 sizeof(linux_flock)); 1342 if (error) 1343 return (error); 1344 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1345 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1346 if (error) 1347 return (error); 1348 bsd_to_linux_flock(&bsd_flock, &linux_flock); 1349 return (copyout(&linux_flock, (void *)args->arg, 1350 sizeof(linux_flock))); 1351 1352 case LINUX_F_SETLK: 1353 error = copyin((void *)args->arg, &linux_flock, 1354 sizeof(linux_flock)); 1355 if (error) 1356 return (error); 1357 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1358 return (kern_fcntl(td, args->fd, F_SETLK, 1359 (intptr_t)&bsd_flock)); 1360 1361 case LINUX_F_SETLKW: 1362 error = copyin((void *)args->arg, &linux_flock, 1363 sizeof(linux_flock)); 1364 if (error) 1365 return (error); 1366 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1367 return (kern_fcntl(td, args->fd, F_SETLKW, 1368 (intptr_t)&bsd_flock)); 1369 1370 case LINUX_F_GETOWN: 1371 return (kern_fcntl(td, args->fd, F_GETOWN, 0)); 1372 1373 case LINUX_F_SETOWN: 1374 /* 1375 * XXX some Linux applications depend on F_SETOWN having no 1376 * significant effect for pipes (SIGIO is not delivered for 1377 * pipes under Linux-2.2.35 at least). 1378 */ 1379 error = fget(td, args->fd, 1380 cap_rights_init(&rights, CAP_FCNTL), &fp); 1381 if (error) 1382 return (error); 1383 if (fp->f_type == DTYPE_PIPE) { 1384 fdrop(fp, td); 1385 return (EINVAL); 1386 } 1387 fdrop(fp, td); 1388 1389 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg)); 1390 } 1391 1392 return (EINVAL); 1393} 1394 1395int 1396linux_fcntl(struct thread *td, struct linux_fcntl_args *args) 1397{ 1398 1399#ifdef DEBUG 1400 if (ldebug(fcntl)) 1401 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd); 1402#endif 1403 1404 return (fcntl_common(td, args)); 1405} 1406 1407#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1408int 1409linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args) 1410{ 1411 struct l_flock64 linux_flock; 1412 struct flock bsd_flock; 1413 struct linux_fcntl_args fcntl_args; 1414 int error; 1415 1416#ifdef DEBUG 1417 if (ldebug(fcntl64)) 1418 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd); 1419#endif 1420 1421 switch (args->cmd) { 1422 case LINUX_F_GETLK64: 1423 error = copyin((void *)args->arg, &linux_flock, 1424 sizeof(linux_flock)); 1425 if (error) 1426 return (error); 1427 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1428 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1429 if (error) 1430 return (error); 1431 bsd_to_linux_flock64(&bsd_flock, &linux_flock); 1432 return (copyout(&linux_flock, (void *)args->arg, 1433 sizeof(linux_flock))); 1434 1435 case LINUX_F_SETLK64: 1436 error = copyin((void *)args->arg, &linux_flock, 1437 sizeof(linux_flock)); 1438 if (error) 1439 return (error); 1440 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1441 return (kern_fcntl(td, args->fd, F_SETLK, 1442 (intptr_t)&bsd_flock)); 1443 1444 case LINUX_F_SETLKW64: 1445 error = copyin((void *)args->arg, &linux_flock, 1446 sizeof(linux_flock)); 1447 if (error) 1448 return (error); 1449 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1450 return (kern_fcntl(td, args->fd, F_SETLKW, 1451 (intptr_t)&bsd_flock)); 1452 } 1453 1454 fcntl_args.fd = args->fd; 1455 fcntl_args.cmd = args->cmd; 1456 fcntl_args.arg = args->arg; 1457 return (fcntl_common(td, &fcntl_args)); 1458} 1459#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1460 1461int 1462linux_chown(struct thread *td, struct linux_chown_args *args) 1463{ 1464 char *path; 1465 int error; 1466 1467 LCONVPATHEXIST(td, args->path, &path); 1468 1469#ifdef DEBUG 1470 if (ldebug(chown)) 1471 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid); 1472#endif 1473 error = kern_chown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1474 LFREEPATH(path); 1475 return (error); 1476} 1477 1478int 1479linux_fchownat(struct thread *td, struct linux_fchownat_args *args) 1480{ 1481 char *path; 1482 int error, dfd, flag; 1483 1484 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW) 1485 return (EINVAL); 1486 1487 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 1488 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 1489 1490#ifdef DEBUG 1491 if (ldebug(fchownat)) 1492 printf(ARGS(fchownat, "%s, %d, %d"), path, args->uid, args->gid); 1493#endif 1494 1495 flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 : 1496 AT_SYMLINK_NOFOLLOW; 1497 error = kern_fchownat(td, dfd, path, UIO_SYSSPACE, args->uid, args->gid, 1498 flag); 1499 LFREEPATH(path); 1500 return (error); 1501} 1502 1503int 1504linux_lchown(struct thread *td, struct linux_lchown_args *args) 1505{ 1506 char *path; 1507 int error; 1508 1509 LCONVPATHEXIST(td, args->path, &path); 1510 1511#ifdef DEBUG 1512 if (ldebug(lchown)) 1513 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid); 1514#endif 1515 error = kern_lchown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1516 LFREEPATH(path); 1517 return (error); 1518} 1519 1520static int 1521convert_fadvice(int advice) 1522{ 1523 switch (advice) { 1524 case LINUX_POSIX_FADV_NORMAL: 1525 return (POSIX_FADV_NORMAL); 1526 case LINUX_POSIX_FADV_RANDOM: 1527 return (POSIX_FADV_RANDOM); 1528 case LINUX_POSIX_FADV_SEQUENTIAL: 1529 return (POSIX_FADV_SEQUENTIAL); 1530 case LINUX_POSIX_FADV_WILLNEED: 1531 return (POSIX_FADV_WILLNEED); 1532 case LINUX_POSIX_FADV_DONTNEED: 1533 return (POSIX_FADV_DONTNEED); 1534 case LINUX_POSIX_FADV_NOREUSE: 1535 return (POSIX_FADV_NOREUSE); 1536 default: 1537 return (-1); 1538 } 1539} 1540 1541int 1542linux_fadvise64(struct thread *td, struct linux_fadvise64_args *args) 1543{ 1544 int advice; 1545 1546 advice = convert_fadvice(args->advice); 1547 if (advice == -1) 1548 return (EINVAL); 1549 return (kern_posix_fadvise(td, args->fd, args->offset, args->len, 1550 advice)); 1551} 1552 1553#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1554int 1555linux_fadvise64_64(struct thread *td, struct linux_fadvise64_64_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#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1566 1567int 1568linux_pipe(struct thread *td, struct linux_pipe_args *args) 1569{ 1570 int fildes[2]; 1571 int error; 1572 1573#ifdef DEBUG 1574 if (ldebug(pipe)) 1575 printf(ARGS(pipe, "*")); 1576#endif 1577 1578 error = kern_pipe2(td, fildes, 0); 1579 if (error) 1580 return (error); 1581 1582 /* XXX: Close descriptors on error. */ 1583 return (copyout(fildes, args->pipefds, sizeof(fildes))); 1584} 1585 1586int 1587linux_pipe2(struct thread *td, struct linux_pipe2_args *args) 1588{ 1589 int fildes[2]; 1590 int error, flags; 1591 1592#ifdef DEBUG 1593 if (ldebug(pipe2)) 1594 printf(ARGS(pipe2, "*, %d"), args->flags); 1595#endif 1596 1597 if ((args->flags & ~(LINUX_O_NONBLOCK | LINUX_O_CLOEXEC)) != 0) 1598 return (EINVAL); 1599 1600 flags = 0; 1601 if ((args->flags & LINUX_O_NONBLOCK) != 0) 1602 flags |= O_NONBLOCK; 1603 if ((args->flags & LINUX_O_CLOEXEC) != 0) 1604 flags |= O_CLOEXEC; 1605 error = kern_pipe2(td, fildes, flags); 1606 if (error) 1607 return (error); 1608 1609 /* XXX: Close descriptors on error. */ 1610 return (copyout(fildes, args->pipefds, sizeof(fildes))); 1611} 1612 1613int 1614linux_dup3(struct thread *td, struct linux_dup3_args *args) 1615{ 1616 int cmd; 1617 intptr_t newfd; 1618 1619 if (args->oldfd == args->newfd) 1620 return (EINVAL); 1621 if ((args->flags & ~LINUX_O_CLOEXEC) != 0) 1622 return (EINVAL); 1623 if (args->flags & LINUX_O_CLOEXEC) 1624 cmd = F_DUP2FD_CLOEXEC; 1625 else 1626 cmd = F_DUP2FD; 1627 1628 newfd = args->newfd; 1629 return (kern_fcntl(td, args->oldfd, cmd, newfd)); 1630} 1631