linux_file.c revision 289504
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 289504 2015-10-18 13:58:17Z trasz $"); 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); 135 136 if (!error) { 137 fd = td->td_retval[0]; 138 /* 139 * XXX In between kern_open() and fget(), another process 140 * having the same filedesc could use that fd without 141 * checking below. 142 */ 143 error = fget(td, fd, cap_rights_init(&rights, CAP_IOCTL), &fp); 144 if (!error) { 145 sx_slock(&proctree_lock); 146 PROC_LOCK(p); 147 if (!(bsd_flags & O_NOCTTY) && 148 SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 149 PROC_UNLOCK(p); 150 sx_unlock(&proctree_lock); 151 /* XXXPJD: Verify if TIOCSCTTY is allowed. */ 152 if (fp->f_type == DTYPE_VNODE) 153 (void) fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, 154 td->td_ucred, td); 155 } else { 156 PROC_UNLOCK(p); 157 sx_sunlock(&proctree_lock); 158 } 159 fdrop(fp, td); 160 /* 161 * XXX as above, fdrop()/kern_close() pair is racy. 162 */ 163 if (error) 164 kern_close(td, fd); 165 } 166 } 167 168#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 238int 239linux_llseek(struct thread *td, struct linux_llseek_args *args) 240{ 241 struct lseek_args bsd_args; 242 int error; 243 off_t off; 244 245#ifdef DEBUG 246 if (ldebug(llseek)) 247 printf(ARGS(llseek, "%d, %d:%d, %d"), 248 args->fd, args->ohigh, args->olow, args->whence); 249#endif 250 off = (args->olow) | (((off_t) args->ohigh) << 32); 251 252 bsd_args.fd = args->fd; 253 bsd_args.offset = off; 254 bsd_args.whence = args->whence; 255 256 if ((error = sys_lseek(td, &bsd_args))) 257 return error; 258 259 if ((error = copyout(td->td_retval, args->res, sizeof (off_t)))) 260 return error; 261 262 td->td_retval[0] = 0; 263 return 0; 264} 265 266int 267linux_readdir(struct thread *td, struct linux_readdir_args *args) 268{ 269 struct linux_getdents_args lda; 270 271 lda.fd = args->fd; 272 lda.dent = args->dent; 273 lda.count = 1; 274 return linux_getdents(td, &lda); 275} 276 277/* 278 * Note that linux_getdents(2) and linux_getdents64(2) have the same 279 * arguments. They only differ in the definition of struct dirent they 280 * operate on. We use this to common the code, with the exception of 281 * accessing struct dirent. Note that linux_readdir(2) is implemented 282 * by means of linux_getdents(2). In this case we never operate on 283 * struct dirent64 and thus don't need to handle it... 284 */ 285 286struct l_dirent { 287 l_ulong d_ino; 288 l_off_t d_off; 289 l_ushort d_reclen; 290 char d_name[LINUX_NAME_MAX + 1]; 291}; 292 293struct l_dirent64 { 294 uint64_t d_ino; 295 int64_t d_off; 296 l_ushort d_reclen; 297 u_char d_type; 298 char d_name[LINUX_NAME_MAX + 1]; 299}; 300 301/* 302 * Linux uses the last byte in the dirent buffer to store d_type, 303 * at least glibc-2.7 requires it. That is why l_dirent is padded with 2 bytes. 304 */ 305#define LINUX_RECLEN(namlen) \ 306 roundup((offsetof(struct l_dirent, d_name) + (namlen) + 2), \ 307 sizeof(l_ulong)) 308 309#define LINUX_RECLEN64(namlen) \ 310 roundup((offsetof(struct l_dirent64, d_name) + (namlen) + 1), \ 311 sizeof(uint64_t)) 312 313#define LINUX_MAXRECLEN max(LINUX_RECLEN(LINUX_NAME_MAX), \ 314 LINUX_RECLEN64(LINUX_NAME_MAX)) 315#define LINUX_DIRBLKSIZ 512 316 317static int 318getdents_common(struct thread *td, struct linux_getdents64_args *args, 319 int is64bit) 320{ 321 struct dirent *bdp; 322 struct vnode *vp; 323 caddr_t inp, buf; /* BSD-format */ 324 int len, reclen; /* BSD-format */ 325 caddr_t outp; /* Linux-format */ 326 int resid, linuxreclen=0; /* Linux-format */ 327 caddr_t lbuf; /* Linux-format */ 328 cap_rights_t rights; 329 struct file *fp; 330 struct uio auio; 331 struct iovec aiov; 332 off_t off; 333 struct l_dirent *linux_dirent; 334 struct l_dirent64 *linux_dirent64; 335 int buflen, error, eofflag, nbytes, justone; 336 u_long *cookies = NULL, *cookiep; 337 int ncookies; 338 339 nbytes = args->count; 340 if (nbytes == 1) { 341 /* readdir(2) case. Always struct dirent. */ 342 if (is64bit) 343 return (EINVAL); 344 nbytes = sizeof(*linux_dirent); 345 justone = 1; 346 } else 347 justone = 0; 348 349 error = getvnode(td->td_proc->p_fd, args->fd, 350 cap_rights_init(&rights, CAP_READ), &fp); 351 if (error != 0) 352 return (error); 353 354 if ((fp->f_flag & FREAD) == 0) { 355 fdrop(fp, td); 356 return (EBADF); 357 } 358 359 off = foffset_lock(fp, 0); 360 vp = fp->f_vnode; 361 if (vp->v_type != VDIR) { 362 foffset_unlock(fp, off, 0); 363 fdrop(fp, td); 364 return (EINVAL); 365 } 366 367 368 buflen = max(LINUX_DIRBLKSIZ, nbytes); 369 buflen = min(buflen, MAXBSIZE); 370 buf = malloc(buflen, M_TEMP, M_WAITOK); 371 lbuf = malloc(LINUX_MAXRECLEN, M_TEMP, M_WAITOK | M_ZERO); 372 vn_lock(vp, LK_SHARED | LK_RETRY); 373 374 aiov.iov_base = buf; 375 aiov.iov_len = buflen; 376 auio.uio_iov = &aiov; 377 auio.uio_iovcnt = 1; 378 auio.uio_rw = UIO_READ; 379 auio.uio_segflg = UIO_SYSSPACE; 380 auio.uio_td = td; 381 auio.uio_resid = buflen; 382 auio.uio_offset = off; 383 384#ifdef MAC 385 /* 386 * Do directory search MAC check using non-cached credentials. 387 */ 388 if ((error = mac_vnode_check_readdir(td->td_ucred, vp))) 389 goto out; 390#endif /* MAC */ 391 if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, 392 &cookies))) 393 goto out; 394 395 inp = buf; 396 outp = (caddr_t)args->dirent; 397 resid = nbytes; 398 if ((len = buflen - auio.uio_resid) <= 0) 399 goto eof; 400 401 cookiep = cookies; 402 403 if (cookies) { 404 /* 405 * When using cookies, the vfs has the option of reading from 406 * a different offset than that supplied (UFS truncates the 407 * offset to a block boundary to make sure that it never reads 408 * partway through a directory entry, even if the directory 409 * has been compacted). 410 */ 411 while (len > 0 && ncookies > 0 && *cookiep <= off) { 412 bdp = (struct dirent *) inp; 413 len -= bdp->d_reclen; 414 inp += bdp->d_reclen; 415 cookiep++; 416 ncookies--; 417 } 418 } 419 420 while (len > 0) { 421 if (cookiep && ncookies == 0) 422 break; 423 bdp = (struct dirent *) inp; 424 reclen = bdp->d_reclen; 425 if (reclen & 3) { 426 error = EFAULT; 427 goto out; 428 } 429 430 if (bdp->d_fileno == 0) { 431 inp += reclen; 432 if (cookiep) { 433 off = *cookiep++; 434 ncookies--; 435 } else 436 off += reclen; 437 438 len -= reclen; 439 continue; 440 } 441 442 linuxreclen = (is64bit) 443 ? LINUX_RECLEN64(bdp->d_namlen) 444 : LINUX_RECLEN(bdp->d_namlen); 445 446 if (reclen > len || resid < linuxreclen) { 447 outp++; 448 break; 449 } 450 451 if (justone) { 452 /* readdir(2) case. */ 453 linux_dirent = (struct l_dirent*)lbuf; 454 linux_dirent->d_ino = bdp->d_fileno; 455 linux_dirent->d_off = (l_off_t)linuxreclen; 456 linux_dirent->d_reclen = (l_ushort)bdp->d_namlen; 457 strlcpy(linux_dirent->d_name, bdp->d_name, 458 linuxreclen - offsetof(struct l_dirent, d_name)); 459 error = copyout(linux_dirent, outp, linuxreclen); 460 } 461 if (is64bit) { 462 linux_dirent64 = (struct l_dirent64*)lbuf; 463 linux_dirent64->d_ino = bdp->d_fileno; 464 linux_dirent64->d_off = (cookiep) 465 ? (l_off_t)*cookiep 466 : (l_off_t)(off + reclen); 467 linux_dirent64->d_reclen = (l_ushort)linuxreclen; 468 linux_dirent64->d_type = bdp->d_type; 469 strlcpy(linux_dirent64->d_name, bdp->d_name, 470 linuxreclen - offsetof(struct l_dirent64, d_name)); 471 error = copyout(linux_dirent64, outp, linuxreclen); 472 } else if (!justone) { 473 linux_dirent = (struct l_dirent*)lbuf; 474 linux_dirent->d_ino = bdp->d_fileno; 475 linux_dirent->d_off = (cookiep) 476 ? (l_off_t)*cookiep 477 : (l_off_t)(off + reclen); 478 linux_dirent->d_reclen = (l_ushort)linuxreclen; 479 /* 480 * Copy d_type to last byte of l_dirent buffer 481 */ 482 lbuf[linuxreclen-1] = bdp->d_type; 483 strlcpy(linux_dirent->d_name, bdp->d_name, 484 linuxreclen - offsetof(struct l_dirent, d_name)-1); 485 error = copyout(linux_dirent, outp, linuxreclen); 486 } 487 488 if (error) 489 goto out; 490 491 inp += reclen; 492 if (cookiep) { 493 off = *cookiep++; 494 ncookies--; 495 } else 496 off += reclen; 497 498 outp += linuxreclen; 499 resid -= linuxreclen; 500 len -= reclen; 501 if (justone) 502 break; 503 } 504 505 if (outp == (caddr_t)args->dirent) { 506 nbytes = resid; 507 goto eof; 508 } 509 510 if (justone) 511 nbytes = resid + linuxreclen; 512 513eof: 514 td->td_retval[0] = nbytes - resid; 515 516out: 517 free(cookies, M_TEMP); 518 519 VOP_UNLOCK(vp, 0); 520 foffset_unlock(fp, off, 0); 521 fdrop(fp, td); 522 free(buf, M_TEMP); 523 free(lbuf, M_TEMP); 524 return (error); 525} 526 527int 528linux_getdents(struct thread *td, struct linux_getdents_args *args) 529{ 530 531#ifdef DEBUG 532 if (ldebug(getdents)) 533 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count); 534#endif 535 536 return (getdents_common(td, (struct linux_getdents64_args*)args, 0)); 537} 538 539int 540linux_getdents64(struct thread *td, struct linux_getdents64_args *args) 541{ 542 543#ifdef DEBUG 544 if (ldebug(getdents64)) 545 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count); 546#endif 547 548 return (getdents_common(td, args, 1)); 549} 550 551/* 552 * These exist mainly for hooks for doing /compat/linux translation. 553 */ 554 555int 556linux_access(struct thread *td, struct linux_access_args *args) 557{ 558 char *path; 559 int error; 560 561 /* linux convention */ 562 if (args->amode & ~(F_OK | X_OK | W_OK | R_OK)) 563 return (EINVAL); 564 565 LCONVPATHEXIST(td, args->path, &path); 566 567#ifdef DEBUG 568 if (ldebug(access)) 569 printf(ARGS(access, "%s, %d"), path, args->amode); 570#endif 571 error = kern_access(td, path, UIO_SYSSPACE, args->amode); 572 LFREEPATH(path); 573 574 return (error); 575} 576 577int 578linux_faccessat(struct thread *td, struct linux_faccessat_args *args) 579{ 580 char *path; 581 int error, dfd, flag; 582 583 if (args->flag & ~LINUX_AT_EACCESS) 584 return (EINVAL); 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 flag = (args->flag & LINUX_AT_EACCESS) == 0 ? 0 : AT_EACCESS; 598 error = kern_accessat(td, dfd, path, UIO_SYSSPACE, flag, args->amode); 599 LFREEPATH(path); 600 601 return (error); 602} 603 604int 605linux_unlink(struct thread *td, struct linux_unlink_args *args) 606{ 607 char *path; 608 int error; 609 struct stat st; 610 611 LCONVPATHEXIST(td, args->path, &path); 612 613#ifdef DEBUG 614 if (ldebug(unlink)) 615 printf(ARGS(unlink, "%s"), path); 616#endif 617 618 error = kern_unlink(td, path, UIO_SYSSPACE); 619 if (error == EPERM) 620 /* Introduce POSIX noncompliant behaviour of Linux */ 621 if (kern_stat(td, path, UIO_SYSSPACE, &st) == 0) 622 if (S_ISDIR(st.st_mode)) 623 error = EISDIR; 624 LFREEPATH(path); 625 return (error); 626} 627 628int 629linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args) 630{ 631 char *path; 632 int error, dfd; 633 struct stat st; 634 635 if (args->flag & ~LINUX_AT_REMOVEDIR) 636 return (EINVAL); 637 638 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 639 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); 640 641#ifdef DEBUG 642 if (ldebug(unlinkat)) 643 printf(ARGS(unlinkat, "%s"), path); 644#endif 645 646 if (args->flag & LINUX_AT_REMOVEDIR) 647 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE); 648 else 649 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE, 0); 650 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) { 651 /* Introduce POSIX noncompliant behaviour of Linux */ 652 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path, 653 UIO_SYSSPACE, &st) == 0 && S_ISDIR(st.st_mode)) 654 error = EISDIR; 655 } 656 LFREEPATH(path); 657 return (error); 658} 659int 660linux_chdir(struct thread *td, struct linux_chdir_args *args) 661{ 662 char *path; 663 int error; 664 665 LCONVPATHEXIST(td, args->path, &path); 666 667#ifdef DEBUG 668 if (ldebug(chdir)) 669 printf(ARGS(chdir, "%s"), path); 670#endif 671 error = kern_chdir(td, path, UIO_SYSSPACE); 672 LFREEPATH(path); 673 return (error); 674} 675 676int 677linux_chmod(struct thread *td, struct linux_chmod_args *args) 678{ 679 char *path; 680 int error; 681 682 LCONVPATHEXIST(td, args->path, &path); 683 684#ifdef DEBUG 685 if (ldebug(chmod)) 686 printf(ARGS(chmod, "%s, %d"), path, args->mode); 687#endif 688 error = kern_chmod(td, path, UIO_SYSSPACE, args->mode); 689 LFREEPATH(path); 690 return (error); 691} 692 693int 694linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args) 695{ 696 char *path; 697 int error, dfd; 698 699 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 700 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 701 702#ifdef DEBUG 703 if (ldebug(fchmodat)) 704 printf(ARGS(fchmodat, "%s, %d"), path, args->mode); 705#endif 706 707 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0); 708 LFREEPATH(path); 709 return (error); 710} 711 712int 713linux_mkdir(struct thread *td, struct linux_mkdir_args *args) 714{ 715 char *path; 716 int error; 717 718 LCONVPATHCREAT(td, args->path, &path); 719 720#ifdef DEBUG 721 if (ldebug(mkdir)) 722 printf(ARGS(mkdir, "%s, %d"), path, args->mode); 723#endif 724 error = kern_mkdir(td, path, UIO_SYSSPACE, args->mode); 725 LFREEPATH(path); 726 return (error); 727} 728 729int 730linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args) 731{ 732 char *path; 733 int error, dfd; 734 735 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 736 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd); 737 738#ifdef DEBUG 739 if (ldebug(mkdirat)) 740 printf(ARGS(mkdirat, "%s, %d"), path, args->mode); 741#endif 742 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode); 743 LFREEPATH(path); 744 return (error); 745} 746 747int 748linux_rmdir(struct thread *td, struct linux_rmdir_args *args) 749{ 750 char *path; 751 int error; 752 753 LCONVPATHEXIST(td, args->path, &path); 754 755#ifdef DEBUG 756 if (ldebug(rmdir)) 757 printf(ARGS(rmdir, "%s"), path); 758#endif 759 error = kern_rmdir(td, path, UIO_SYSSPACE); 760 LFREEPATH(path); 761 return (error); 762} 763 764int 765linux_rename(struct thread *td, struct linux_rename_args *args) 766{ 767 char *from, *to; 768 int error; 769 770 LCONVPATHEXIST(td, args->from, &from); 771 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 772 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 773 if (to == NULL) { 774 LFREEPATH(from); 775 return (error); 776 } 777 778#ifdef DEBUG 779 if (ldebug(rename)) 780 printf(ARGS(rename, "%s, %s"), from, to); 781#endif 782 error = kern_rename(td, from, to, UIO_SYSSPACE); 783 LFREEPATH(from); 784 LFREEPATH(to); 785 return (error); 786} 787 788int 789linux_renameat(struct thread *td, struct linux_renameat_args *args) 790{ 791 char *from, *to; 792 int error, olddfd, newdfd; 793 794 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 795 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 796 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd); 797 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 798 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 799 if (to == NULL) { 800 LFREEPATH(from); 801 return (error); 802 } 803 804#ifdef DEBUG 805 if (ldebug(renameat)) 806 printf(ARGS(renameat, "%s, %s"), from, to); 807#endif 808 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE); 809 LFREEPATH(from); 810 LFREEPATH(to); 811 return (error); 812} 813 814int 815linux_symlink(struct thread *td, struct linux_symlink_args *args) 816{ 817 char *path, *to; 818 int error; 819 820 LCONVPATHEXIST(td, args->path, &path); 821 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 822 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 823 if (to == NULL) { 824 LFREEPATH(path); 825 return (error); 826 } 827 828#ifdef DEBUG 829 if (ldebug(symlink)) 830 printf(ARGS(symlink, "%s, %s"), path, to); 831#endif 832 error = kern_symlink(td, path, to, UIO_SYSSPACE); 833 LFREEPATH(path); 834 LFREEPATH(to); 835 return (error); 836} 837 838int 839linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args) 840{ 841 char *path, *to; 842 int error, dfd; 843 844 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 845 LCONVPATHEXIST_AT(td, args->oldname, &path, dfd); 846 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 847 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd); 848 if (to == NULL) { 849 LFREEPATH(path); 850 return (error); 851 } 852 853#ifdef DEBUG 854 if (ldebug(symlinkat)) 855 printf(ARGS(symlinkat, "%s, %s"), path, to); 856#endif 857 858 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE); 859 LFREEPATH(path); 860 LFREEPATH(to); 861 return (error); 862} 863 864int 865linux_readlink(struct thread *td, struct linux_readlink_args *args) 866{ 867 char *name; 868 int error; 869 870 LCONVPATHEXIST(td, args->name, &name); 871 872#ifdef DEBUG 873 if (ldebug(readlink)) 874 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf, 875 args->count); 876#endif 877 error = kern_readlink(td, name, UIO_SYSSPACE, args->buf, UIO_USERSPACE, 878 args->count); 879 LFREEPATH(name); 880 return (error); 881} 882 883int 884linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args) 885{ 886 char *name; 887 int error, dfd; 888 889 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 890 LCONVPATHEXIST_AT(td, args->path, &name, dfd); 891 892#ifdef DEBUG 893 if (ldebug(readlinkat)) 894 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf, 895 args->bufsiz); 896#endif 897 898 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf, 899 UIO_USERSPACE, args->bufsiz); 900 LFREEPATH(name); 901 return (error); 902} 903 904int 905linux_truncate(struct thread *td, struct linux_truncate_args *args) 906{ 907 char *path; 908 int error; 909 910 LCONVPATHEXIST(td, args->path, &path); 911 912#ifdef DEBUG 913 if (ldebug(truncate)) 914 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length); 915#endif 916 917 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 918 LFREEPATH(path); 919 return (error); 920} 921 922int 923linux_truncate64(struct thread *td, struct linux_truncate64_args *args) 924{ 925 char *path; 926 int error; 927 928 LCONVPATHEXIST(td, args->path, &path); 929 930#ifdef DEBUG 931 if (ldebug(truncate64)) 932 printf(ARGS(truncate64, "%s, %jd"), path, args->length); 933#endif 934 935 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 936 LFREEPATH(path); 937 return (error); 938} 939int 940linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args) 941{ 942 struct ftruncate_args /* { 943 int fd; 944 int pad; 945 off_t length; 946 } */ nuap; 947 948 nuap.fd = args->fd; 949 nuap.length = args->length; 950 return (sys_ftruncate(td, &nuap)); 951} 952 953int 954linux_link(struct thread *td, struct linux_link_args *args) 955{ 956 char *path, *to; 957 int error; 958 959 LCONVPATHEXIST(td, args->path, &path); 960 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 961 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 962 if (to == NULL) { 963 LFREEPATH(path); 964 return (error); 965 } 966 967#ifdef DEBUG 968 if (ldebug(link)) 969 printf(ARGS(link, "%s, %s"), path, to); 970#endif 971 error = kern_link(td, path, to, UIO_SYSSPACE); 972 LFREEPATH(path); 973 LFREEPATH(to); 974 return (error); 975} 976 977int 978linux_linkat(struct thread *td, struct linux_linkat_args *args) 979{ 980 char *path, *to; 981 int error, olddfd, newdfd, follow; 982 983 if (args->flag & ~LINUX_AT_SYMLINK_FOLLOW) 984 return (EINVAL); 985 986 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 987 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 988 LCONVPATHEXIST_AT(td, args->oldname, &path, olddfd); 989 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 990 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 991 if (to == NULL) { 992 LFREEPATH(path); 993 return (error); 994 } 995 996#ifdef DEBUG 997 if (ldebug(linkat)) 998 printf(ARGS(linkat, "%i, %s, %i, %s, %i"), args->olddfd, path, 999 args->newdfd, to, args->flag); 1000#endif 1001 1002 follow = (args->flag & LINUX_AT_SYMLINK_FOLLOW) == 0 ? NOFOLLOW : 1003 FOLLOW; 1004 error = kern_linkat(td, olddfd, newdfd, path, to, UIO_SYSSPACE, follow); 1005 LFREEPATH(path); 1006 LFREEPATH(to); 1007 return (error); 1008} 1009 1010int 1011linux_fdatasync(td, uap) 1012 struct thread *td; 1013 struct linux_fdatasync_args *uap; 1014{ 1015 struct fsync_args bsd; 1016 1017 bsd.fd = uap->fd; 1018 return sys_fsync(td, &bsd); 1019} 1020 1021int 1022linux_pread(td, uap) 1023 struct thread *td; 1024 struct linux_pread_args *uap; 1025{ 1026 struct pread_args bsd; 1027 cap_rights_t rights; 1028 struct vnode *vp; 1029 int error; 1030 1031 bsd.fd = uap->fd; 1032 bsd.buf = uap->buf; 1033 bsd.nbyte = uap->nbyte; 1034 bsd.offset = uap->offset; 1035 1036 error = sys_pread(td, &bsd); 1037 1038 if (error == 0) { 1039 /* This seems to violate POSIX but linux does it */ 1040 error = fgetvp(td, uap->fd, 1041 cap_rights_init(&rights, CAP_PREAD), &vp); 1042 if (error != 0) 1043 return (error); 1044 if (vp->v_type == VDIR) { 1045 vrele(vp); 1046 return (EISDIR); 1047 } 1048 vrele(vp); 1049 } 1050 1051 return (error); 1052} 1053 1054int 1055linux_pwrite(td, uap) 1056 struct thread *td; 1057 struct linux_pwrite_args *uap; 1058{ 1059 struct pwrite_args bsd; 1060 1061 bsd.fd = uap->fd; 1062 bsd.buf = uap->buf; 1063 bsd.nbyte = uap->nbyte; 1064 bsd.offset = uap->offset; 1065 return sys_pwrite(td, &bsd); 1066} 1067 1068int 1069linux_mount(struct thread *td, struct linux_mount_args *args) 1070{ 1071 char fstypename[MFSNAMELEN]; 1072 char mntonname[MNAMELEN], mntfromname[MNAMELEN]; 1073 int error; 1074 int fsflags; 1075 1076 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1, 1077 NULL); 1078 if (error) 1079 return (error); 1080 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL); 1081 if (error) 1082 return (error); 1083 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL); 1084 if (error) 1085 return (error); 1086 1087#ifdef DEBUG 1088 if (ldebug(mount)) 1089 printf(ARGS(mount, "%s, %s, %s"), 1090 fstypename, mntfromname, mntonname); 1091#endif 1092 1093 if (strcmp(fstypename, "ext2") == 0) { 1094 strcpy(fstypename, "ext2fs"); 1095 } else if (strcmp(fstypename, "proc") == 0) { 1096 strcpy(fstypename, "linprocfs"); 1097 } else if (strcmp(fstypename, "vfat") == 0) { 1098 strcpy(fstypename, "msdosfs"); 1099 } 1100 1101 fsflags = 0; 1102 1103 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) { 1104 /* 1105 * Linux SYNC flag is not included; the closest equivalent 1106 * FreeBSD has is !ASYNC, which is our default. 1107 */ 1108 if (args->rwflag & LINUX_MS_RDONLY) 1109 fsflags |= MNT_RDONLY; 1110 if (args->rwflag & LINUX_MS_NOSUID) 1111 fsflags |= MNT_NOSUID; 1112 if (args->rwflag & LINUX_MS_NOEXEC) 1113 fsflags |= MNT_NOEXEC; 1114 if (args->rwflag & LINUX_MS_REMOUNT) 1115 fsflags |= MNT_UPDATE; 1116 } 1117 1118 error = kernel_vmount(fsflags, 1119 "fstype", fstypename, 1120 "fspath", mntonname, 1121 "from", mntfromname, 1122 NULL); 1123 return (error); 1124} 1125 1126int 1127linux_oldumount(struct thread *td, struct linux_oldumount_args *args) 1128{ 1129 struct linux_umount_args args2; 1130 1131 args2.path = args->path; 1132 args2.flags = 0; 1133 return (linux_umount(td, &args2)); 1134} 1135 1136int 1137linux_umount(struct thread *td, struct linux_umount_args *args) 1138{ 1139 struct unmount_args bsd; 1140 1141 bsd.path = args->path; 1142 bsd.flags = args->flags; /* XXX correct? */ 1143 return (sys_unmount(td, &bsd)); 1144} 1145 1146/* 1147 * fcntl family of syscalls 1148 */ 1149 1150struct l_flock { 1151 l_short l_type; 1152 l_short l_whence; 1153 l_off_t l_start; 1154 l_off_t l_len; 1155 l_pid_t l_pid; 1156} 1157#if defined(__amd64__) && defined(COMPAT_LINUX32) 1158__packed 1159#endif 1160; 1161 1162static void 1163linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock) 1164{ 1165 switch (linux_flock->l_type) { 1166 case LINUX_F_RDLCK: 1167 bsd_flock->l_type = F_RDLCK; 1168 break; 1169 case LINUX_F_WRLCK: 1170 bsd_flock->l_type = F_WRLCK; 1171 break; 1172 case LINUX_F_UNLCK: 1173 bsd_flock->l_type = F_UNLCK; 1174 break; 1175 default: 1176 bsd_flock->l_type = -1; 1177 break; 1178 } 1179 bsd_flock->l_whence = linux_flock->l_whence; 1180 bsd_flock->l_start = (off_t)linux_flock->l_start; 1181 bsd_flock->l_len = (off_t)linux_flock->l_len; 1182 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1183 bsd_flock->l_sysid = 0; 1184} 1185 1186static void 1187bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock) 1188{ 1189 switch (bsd_flock->l_type) { 1190 case F_RDLCK: 1191 linux_flock->l_type = LINUX_F_RDLCK; 1192 break; 1193 case F_WRLCK: 1194 linux_flock->l_type = LINUX_F_WRLCK; 1195 break; 1196 case F_UNLCK: 1197 linux_flock->l_type = LINUX_F_UNLCK; 1198 break; 1199 } 1200 linux_flock->l_whence = bsd_flock->l_whence; 1201 linux_flock->l_start = (l_off_t)bsd_flock->l_start; 1202 linux_flock->l_len = (l_off_t)bsd_flock->l_len; 1203 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1204} 1205 1206#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1207struct l_flock64 { 1208 l_short l_type; 1209 l_short l_whence; 1210 l_loff_t l_start; 1211 l_loff_t l_len; 1212 l_pid_t l_pid; 1213} 1214#if defined(__amd64__) && defined(COMPAT_LINUX32) 1215__packed 1216#endif 1217; 1218 1219static void 1220linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock) 1221{ 1222 switch (linux_flock->l_type) { 1223 case LINUX_F_RDLCK: 1224 bsd_flock->l_type = F_RDLCK; 1225 break; 1226 case LINUX_F_WRLCK: 1227 bsd_flock->l_type = F_WRLCK; 1228 break; 1229 case LINUX_F_UNLCK: 1230 bsd_flock->l_type = F_UNLCK; 1231 break; 1232 default: 1233 bsd_flock->l_type = -1; 1234 break; 1235 } 1236 bsd_flock->l_whence = linux_flock->l_whence; 1237 bsd_flock->l_start = (off_t)linux_flock->l_start; 1238 bsd_flock->l_len = (off_t)linux_flock->l_len; 1239 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1240 bsd_flock->l_sysid = 0; 1241} 1242 1243static void 1244bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock) 1245{ 1246 switch (bsd_flock->l_type) { 1247 case F_RDLCK: 1248 linux_flock->l_type = LINUX_F_RDLCK; 1249 break; 1250 case F_WRLCK: 1251 linux_flock->l_type = LINUX_F_WRLCK; 1252 break; 1253 case F_UNLCK: 1254 linux_flock->l_type = LINUX_F_UNLCK; 1255 break; 1256 } 1257 linux_flock->l_whence = bsd_flock->l_whence; 1258 linux_flock->l_start = (l_loff_t)bsd_flock->l_start; 1259 linux_flock->l_len = (l_loff_t)bsd_flock->l_len; 1260 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1261} 1262#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1263 1264static int 1265fcntl_common(struct thread *td, struct linux_fcntl64_args *args) 1266{ 1267 struct l_flock linux_flock; 1268 struct flock bsd_flock; 1269 cap_rights_t rights; 1270 struct file *fp; 1271 long arg; 1272 int error, result; 1273 1274 switch (args->cmd) { 1275 case LINUX_F_DUPFD: 1276 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg)); 1277 1278 case LINUX_F_GETFD: 1279 return (kern_fcntl(td, args->fd, F_GETFD, 0)); 1280 1281 case LINUX_F_SETFD: 1282 return (kern_fcntl(td, args->fd, F_SETFD, args->arg)); 1283 1284 case LINUX_F_GETFL: 1285 error = kern_fcntl(td, args->fd, F_GETFL, 0); 1286 result = td->td_retval[0]; 1287 td->td_retval[0] = 0; 1288 if (result & O_RDONLY) 1289 td->td_retval[0] |= LINUX_O_RDONLY; 1290 if (result & O_WRONLY) 1291 td->td_retval[0] |= LINUX_O_WRONLY; 1292 if (result & O_RDWR) 1293 td->td_retval[0] |= LINUX_O_RDWR; 1294 if (result & O_NDELAY) 1295 td->td_retval[0] |= LINUX_O_NONBLOCK; 1296 if (result & O_APPEND) 1297 td->td_retval[0] |= LINUX_O_APPEND; 1298 if (result & O_FSYNC) 1299 td->td_retval[0] |= LINUX_O_SYNC; 1300 if (result & O_ASYNC) 1301 td->td_retval[0] |= LINUX_FASYNC; 1302#ifdef LINUX_O_NOFOLLOW 1303 if (result & O_NOFOLLOW) 1304 td->td_retval[0] |= LINUX_O_NOFOLLOW; 1305#endif 1306#ifdef LINUX_O_DIRECT 1307 if (result & O_DIRECT) 1308 td->td_retval[0] |= LINUX_O_DIRECT; 1309#endif 1310 return (error); 1311 1312 case LINUX_F_SETFL: 1313 arg = 0; 1314 if (args->arg & LINUX_O_NDELAY) 1315 arg |= O_NONBLOCK; 1316 if (args->arg & LINUX_O_APPEND) 1317 arg |= O_APPEND; 1318 if (args->arg & LINUX_O_SYNC) 1319 arg |= O_FSYNC; 1320 if (args->arg & LINUX_FASYNC) 1321 arg |= O_ASYNC; 1322#ifdef LINUX_O_NOFOLLOW 1323 if (args->arg & LINUX_O_NOFOLLOW) 1324 arg |= O_NOFOLLOW; 1325#endif 1326#ifdef LINUX_O_DIRECT 1327 if (args->arg & LINUX_O_DIRECT) 1328 arg |= O_DIRECT; 1329#endif 1330 return (kern_fcntl(td, args->fd, F_SETFL, arg)); 1331 1332 case LINUX_F_GETLK: 1333 error = copyin((void *)args->arg, &linux_flock, 1334 sizeof(linux_flock)); 1335 if (error) 1336 return (error); 1337 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1338 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1339 if (error) 1340 return (error); 1341 bsd_to_linux_flock(&bsd_flock, &linux_flock); 1342 return (copyout(&linux_flock, (void *)args->arg, 1343 sizeof(linux_flock))); 1344 1345 case LINUX_F_SETLK: 1346 error = copyin((void *)args->arg, &linux_flock, 1347 sizeof(linux_flock)); 1348 if (error) 1349 return (error); 1350 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1351 return (kern_fcntl(td, args->fd, F_SETLK, 1352 (intptr_t)&bsd_flock)); 1353 1354 case LINUX_F_SETLKW: 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_SETLKW, 1361 (intptr_t)&bsd_flock)); 1362 1363 case LINUX_F_GETOWN: 1364 return (kern_fcntl(td, args->fd, F_GETOWN, 0)); 1365 1366 case LINUX_F_SETOWN: 1367 /* 1368 * XXX some Linux applications depend on F_SETOWN having no 1369 * significant effect for pipes (SIGIO is not delivered for 1370 * pipes under Linux-2.2.35 at least). 1371 */ 1372 error = fget(td, args->fd, 1373 cap_rights_init(&rights, CAP_FCNTL), &fp); 1374 if (error) 1375 return (error); 1376 if (fp->f_type == DTYPE_PIPE) { 1377 fdrop(fp, td); 1378 return (EINVAL); 1379 } 1380 fdrop(fp, td); 1381 1382 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg)); 1383 } 1384 1385 return (EINVAL); 1386} 1387 1388int 1389linux_fcntl(struct thread *td, struct linux_fcntl_args *args) 1390{ 1391 struct linux_fcntl64_args args64; 1392 1393#ifdef DEBUG 1394 if (ldebug(fcntl)) 1395 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd); 1396#endif 1397 1398 args64.fd = args->fd; 1399 args64.cmd = args->cmd; 1400 args64.arg = args->arg; 1401 return (fcntl_common(td, &args64)); 1402} 1403 1404#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1405int 1406linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args) 1407{ 1408 struct l_flock64 linux_flock; 1409 struct flock bsd_flock; 1410 int error; 1411 1412#ifdef DEBUG 1413 if (ldebug(fcntl64)) 1414 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd); 1415#endif 1416 1417 switch (args->cmd) { 1418 case LINUX_F_GETLK64: 1419 error = copyin((void *)args->arg, &linux_flock, 1420 sizeof(linux_flock)); 1421 if (error) 1422 return (error); 1423 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1424 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1425 if (error) 1426 return (error); 1427 bsd_to_linux_flock64(&bsd_flock, &linux_flock); 1428 return (copyout(&linux_flock, (void *)args->arg, 1429 sizeof(linux_flock))); 1430 1431 case LINUX_F_SETLK64: 1432 error = copyin((void *)args->arg, &linux_flock, 1433 sizeof(linux_flock)); 1434 if (error) 1435 return (error); 1436 linux_to_bsd_flock64(&linux_flock, &bsd_flock); 1437 return (kern_fcntl(td, args->fd, F_SETLK, 1438 (intptr_t)&bsd_flock)); 1439 1440 case LINUX_F_SETLKW64: 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_SETLKW, 1447 (intptr_t)&bsd_flock)); 1448 } 1449 1450 return (fcntl_common(td, args)); 1451} 1452#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1453 1454int 1455linux_chown(struct thread *td, struct linux_chown_args *args) 1456{ 1457 char *path; 1458 int error; 1459 1460 LCONVPATHEXIST(td, args->path, &path); 1461 1462#ifdef DEBUG 1463 if (ldebug(chown)) 1464 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid); 1465#endif 1466 error = kern_chown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1467 LFREEPATH(path); 1468 return (error); 1469} 1470 1471int 1472linux_fchownat(struct thread *td, struct linux_fchownat_args *args) 1473{ 1474 char *path; 1475 int error, dfd, flag; 1476 1477 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW) 1478 return (EINVAL); 1479 1480 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 1481 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 1482 1483#ifdef DEBUG 1484 if (ldebug(fchownat)) 1485 printf(ARGS(fchownat, "%s, %d, %d"), path, args->uid, args->gid); 1486#endif 1487 1488 flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 : 1489 AT_SYMLINK_NOFOLLOW; 1490 error = kern_fchownat(td, dfd, path, UIO_SYSSPACE, args->uid, args->gid, 1491 flag); 1492 LFREEPATH(path); 1493 return (error); 1494} 1495 1496int 1497linux_lchown(struct thread *td, struct linux_lchown_args *args) 1498{ 1499 char *path; 1500 int error; 1501 1502 LCONVPATHEXIST(td, args->path, &path); 1503 1504#ifdef DEBUG 1505 if (ldebug(lchown)) 1506 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid); 1507#endif 1508 error = kern_lchown(td, path, UIO_SYSSPACE, args->uid, args->gid); 1509 LFREEPATH(path); 1510 return (error); 1511} 1512 1513static int 1514convert_fadvice(int advice) 1515{ 1516 switch (advice) { 1517 case LINUX_POSIX_FADV_NORMAL: 1518 return (POSIX_FADV_NORMAL); 1519 case LINUX_POSIX_FADV_RANDOM: 1520 return (POSIX_FADV_RANDOM); 1521 case LINUX_POSIX_FADV_SEQUENTIAL: 1522 return (POSIX_FADV_SEQUENTIAL); 1523 case LINUX_POSIX_FADV_WILLNEED: 1524 return (POSIX_FADV_WILLNEED); 1525 case LINUX_POSIX_FADV_DONTNEED: 1526 return (POSIX_FADV_DONTNEED); 1527 case LINUX_POSIX_FADV_NOREUSE: 1528 return (POSIX_FADV_NOREUSE); 1529 default: 1530 return (-1); 1531 } 1532} 1533 1534int 1535linux_fadvise64(struct thread *td, struct linux_fadvise64_args *args) 1536{ 1537 int advice; 1538 1539 advice = convert_fadvice(args->advice); 1540 if (advice == -1) 1541 return (EINVAL); 1542 return (kern_posix_fadvise(td, args->fd, args->offset, args->len, 1543 advice)); 1544} 1545 1546int 1547linux_fadvise64_64(struct thread *td, struct linux_fadvise64_64_args *args) 1548{ 1549 int advice; 1550 1551 advice = convert_fadvice(args->advice); 1552 if (advice == -1) 1553 return (EINVAL); 1554 return (kern_posix_fadvise(td, args->fd, args->offset, args->len, 1555 advice)); 1556} 1557 1558int 1559linux_pipe(struct thread *td, struct linux_pipe_args *args) 1560{ 1561 int fildes[2]; 1562 int error; 1563 1564#ifdef DEBUG 1565 if (ldebug(pipe)) 1566 printf(ARGS(pipe, "*")); 1567#endif 1568 1569 error = kern_pipe2(td, fildes, 0); 1570 if (error) 1571 return (error); 1572 1573 /* XXX: Close descriptors on error. */ 1574 return (copyout(fildes, args->pipefds, sizeof(fildes))); 1575} 1576 1577int 1578linux_pipe2(struct thread *td, struct linux_pipe2_args *args) 1579{ 1580 int fildes[2]; 1581 int error, flags; 1582 1583#ifdef DEBUG 1584 if (ldebug(pipe2)) 1585 printf(ARGS(pipe2, "*, %d"), args->flags); 1586#endif 1587 1588 if ((args->flags & ~(LINUX_O_NONBLOCK | LINUX_O_CLOEXEC)) != 0) 1589 return (EINVAL); 1590 1591 flags = 0; 1592 if ((args->flags & LINUX_O_NONBLOCK) != 0) 1593 flags |= O_NONBLOCK; 1594 if ((args->flags & LINUX_O_CLOEXEC) != 0) 1595 flags |= O_CLOEXEC; 1596 error = kern_pipe2(td, fildes, flags); 1597 if (error) 1598 return (error); 1599 1600 /* XXX: Close descriptors on error. */ 1601 return (copyout(fildes, args->pipefds, sizeof(fildes))); 1602} 1603