linux_file.c revision 293567
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 293567 2016-01-09 17:13:43Z 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_LINUX, M_WAITOK); 373 lbuf = malloc(LINUX_MAXRECLEN, M_LINUX, 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_LINUX); 525 free(lbuf, M_LINUX); 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; 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 603int 604linux_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_unlink(td, path, UIO_SYSSPACE); 618 if (error == EPERM) 619 /* Introduce POSIX noncompliant behaviour of Linux */ 620 if (kern_stat(td, path, UIO_SYSSPACE, &st) == 0) 621 if (S_ISDIR(st.st_mode)) 622 error = EISDIR; 623 LFREEPATH(path); 624 return (error); 625} 626 627int 628linux_unlinkat(struct thread *td, struct linux_unlinkat_args *args) 629{ 630 char *path; 631 int error, dfd; 632 struct stat st; 633 634 if (args->flag & ~LINUX_AT_REMOVEDIR) 635 return (EINVAL); 636 637 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 638 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); 639 640#ifdef DEBUG 641 if (ldebug(unlinkat)) 642 printf(ARGS(unlinkat, "%s"), path); 643#endif 644 645 if (args->flag & LINUX_AT_REMOVEDIR) 646 error = kern_rmdirat(td, dfd, path, UIO_SYSSPACE); 647 else 648 error = kern_unlinkat(td, dfd, path, UIO_SYSSPACE, 0); 649 if (error == EPERM && !(args->flag & LINUX_AT_REMOVEDIR)) { 650 /* Introduce POSIX noncompliant behaviour of Linux */ 651 if (kern_statat(td, AT_SYMLINK_NOFOLLOW, dfd, path, 652 UIO_SYSSPACE, &st) == 0 && S_ISDIR(st.st_mode)) 653 error = EISDIR; 654 } 655 LFREEPATH(path); 656 return (error); 657} 658int 659linux_chdir(struct thread *td, struct linux_chdir_args *args) 660{ 661 char *path; 662 int error; 663 664 LCONVPATHEXIST(td, args->path, &path); 665 666#ifdef DEBUG 667 if (ldebug(chdir)) 668 printf(ARGS(chdir, "%s"), path); 669#endif 670 error = kern_chdir(td, path, UIO_SYSSPACE); 671 LFREEPATH(path); 672 return (error); 673} 674 675int 676linux_chmod(struct thread *td, struct linux_chmod_args *args) 677{ 678 char *path; 679 int error; 680 681 LCONVPATHEXIST(td, args->path, &path); 682 683#ifdef DEBUG 684 if (ldebug(chmod)) 685 printf(ARGS(chmod, "%s, %d"), path, args->mode); 686#endif 687 error = kern_chmod(td, path, UIO_SYSSPACE, args->mode); 688 LFREEPATH(path); 689 return (error); 690} 691 692int 693linux_fchmodat(struct thread *td, struct linux_fchmodat_args *args) 694{ 695 char *path; 696 int error, dfd; 697 698 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 699 LCONVPATHEXIST_AT(td, args->filename, &path, dfd); 700 701#ifdef DEBUG 702 if (ldebug(fchmodat)) 703 printf(ARGS(fchmodat, "%s, %d"), path, args->mode); 704#endif 705 706 error = kern_fchmodat(td, dfd, path, UIO_SYSSPACE, args->mode, 0); 707 LFREEPATH(path); 708 return (error); 709} 710 711int 712linux_mkdir(struct thread *td, struct linux_mkdir_args *args) 713{ 714 char *path; 715 int error; 716 717 LCONVPATHCREAT(td, args->path, &path); 718 719#ifdef DEBUG 720 if (ldebug(mkdir)) 721 printf(ARGS(mkdir, "%s, %d"), path, args->mode); 722#endif 723 error = kern_mkdir(td, path, UIO_SYSSPACE, args->mode); 724 LFREEPATH(path); 725 return (error); 726} 727 728int 729linux_mkdirat(struct thread *td, struct linux_mkdirat_args *args) 730{ 731 char *path; 732 int error, dfd; 733 734 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 735 LCONVPATHCREAT_AT(td, args->pathname, &path, dfd); 736 737#ifdef DEBUG 738 if (ldebug(mkdirat)) 739 printf(ARGS(mkdirat, "%s, %d"), path, args->mode); 740#endif 741 error = kern_mkdirat(td, dfd, path, UIO_SYSSPACE, args->mode); 742 LFREEPATH(path); 743 return (error); 744} 745 746int 747linux_rmdir(struct thread *td, struct linux_rmdir_args *args) 748{ 749 char *path; 750 int error; 751 752 LCONVPATHEXIST(td, args->path, &path); 753 754#ifdef DEBUG 755 if (ldebug(rmdir)) 756 printf(ARGS(rmdir, "%s"), path); 757#endif 758 error = kern_rmdir(td, path, UIO_SYSSPACE); 759 LFREEPATH(path); 760 return (error); 761} 762 763int 764linux_rename(struct thread *td, struct linux_rename_args *args) 765{ 766 char *from, *to; 767 int error; 768 769 LCONVPATHEXIST(td, args->from, &from); 770 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 771 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 772 if (to == NULL) { 773 LFREEPATH(from); 774 return (error); 775 } 776 777#ifdef DEBUG 778 if (ldebug(rename)) 779 printf(ARGS(rename, "%s, %s"), from, to); 780#endif 781 error = kern_rename(td, from, to, UIO_SYSSPACE); 782 LFREEPATH(from); 783 LFREEPATH(to); 784 return (error); 785} 786 787int 788linux_renameat(struct thread *td, struct linux_renameat_args *args) 789{ 790 char *from, *to; 791 int error, olddfd, newdfd; 792 793 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 794 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 795 LCONVPATHEXIST_AT(td, args->oldname, &from, olddfd); 796 /* Expand LCONVPATHCREATE so that `from' can be freed on errors */ 797 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 798 if (to == NULL) { 799 LFREEPATH(from); 800 return (error); 801 } 802 803#ifdef DEBUG 804 if (ldebug(renameat)) 805 printf(ARGS(renameat, "%s, %s"), from, to); 806#endif 807 error = kern_renameat(td, olddfd, from, newdfd, to, UIO_SYSSPACE); 808 LFREEPATH(from); 809 LFREEPATH(to); 810 return (error); 811} 812 813int 814linux_symlink(struct thread *td, struct linux_symlink_args *args) 815{ 816 char *path, *to; 817 int error; 818 819 LCONVPATHEXIST(td, args->path, &path); 820 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 821 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 822 if (to == NULL) { 823 LFREEPATH(path); 824 return (error); 825 } 826 827#ifdef DEBUG 828 if (ldebug(symlink)) 829 printf(ARGS(symlink, "%s, %s"), path, to); 830#endif 831 error = kern_symlink(td, path, to, UIO_SYSSPACE); 832 LFREEPATH(path); 833 LFREEPATH(to); 834 return (error); 835} 836 837int 838linux_symlinkat(struct thread *td, struct linux_symlinkat_args *args) 839{ 840 char *path, *to; 841 int error, dfd; 842 843 dfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 844 LCONVPATHEXIST_AT(td, args->oldname, &path, dfd); 845 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 846 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, dfd); 847 if (to == NULL) { 848 LFREEPATH(path); 849 return (error); 850 } 851 852#ifdef DEBUG 853 if (ldebug(symlinkat)) 854 printf(ARGS(symlinkat, "%s, %s"), path, to); 855#endif 856 857 error = kern_symlinkat(td, path, dfd, to, UIO_SYSSPACE); 858 LFREEPATH(path); 859 LFREEPATH(to); 860 return (error); 861} 862 863int 864linux_readlink(struct thread *td, struct linux_readlink_args *args) 865{ 866 char *name; 867 int error; 868 869 LCONVPATHEXIST(td, args->name, &name); 870 871#ifdef DEBUG 872 if (ldebug(readlink)) 873 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf, 874 args->count); 875#endif 876 error = kern_readlink(td, name, UIO_SYSSPACE, args->buf, UIO_USERSPACE, 877 args->count); 878 LFREEPATH(name); 879 return (error); 880} 881 882int 883linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args) 884{ 885 char *name; 886 int error, dfd; 887 888 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 889 LCONVPATHEXIST_AT(td, args->path, &name, dfd); 890 891#ifdef DEBUG 892 if (ldebug(readlinkat)) 893 printf(ARGS(readlinkat, "%s, %p, %d"), name, (void *)args->buf, 894 args->bufsiz); 895#endif 896 897 error = kern_readlinkat(td, dfd, name, UIO_SYSSPACE, args->buf, 898 UIO_USERSPACE, args->bufsiz); 899 LFREEPATH(name); 900 return (error); 901} 902 903int 904linux_truncate(struct thread *td, struct linux_truncate_args *args) 905{ 906 char *path; 907 int error; 908 909 LCONVPATHEXIST(td, args->path, &path); 910 911#ifdef DEBUG 912 if (ldebug(truncate)) 913 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length); 914#endif 915 916 error = kern_truncate(td, path, UIO_SYSSPACE, args->length); 917 LFREEPATH(path); 918 return (error); 919} 920 921#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 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} 939#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 940 941int 942linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args) 943{ 944 struct ftruncate_args /* { 945 int fd; 946 int pad; 947 off_t length; 948 } */ nuap; 949 950 nuap.fd = args->fd; 951 nuap.length = args->length; 952 return (sys_ftruncate(td, &nuap)); 953} 954 955int 956linux_link(struct thread *td, struct linux_link_args *args) 957{ 958 char *path, *to; 959 int error; 960 961 LCONVPATHEXIST(td, args->path, &path); 962 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 963 error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1, AT_FDCWD); 964 if (to == NULL) { 965 LFREEPATH(path); 966 return (error); 967 } 968 969#ifdef DEBUG 970 if (ldebug(link)) 971 printf(ARGS(link, "%s, %s"), path, to); 972#endif 973 error = kern_link(td, path, to, UIO_SYSSPACE); 974 LFREEPATH(path); 975 LFREEPATH(to); 976 return (error); 977} 978 979int 980linux_linkat(struct thread *td, struct linux_linkat_args *args) 981{ 982 char *path, *to; 983 int error, olddfd, newdfd, follow; 984 985 if (args->flag & ~LINUX_AT_SYMLINK_FOLLOW) 986 return (EINVAL); 987 988 olddfd = (args->olddfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->olddfd; 989 newdfd = (args->newdfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->newdfd; 990 LCONVPATHEXIST_AT(td, args->oldname, &path, olddfd); 991 /* Expand LCONVPATHCREATE so that `path' can be freed on errors */ 992 error = linux_emul_convpath(td, args->newname, UIO_USERSPACE, &to, 1, newdfd); 993 if (to == NULL) { 994 LFREEPATH(path); 995 return (error); 996 } 997 998#ifdef DEBUG 999 if (ldebug(linkat)) 1000 printf(ARGS(linkat, "%i, %s, %i, %s, %i"), args->olddfd, path, 1001 args->newdfd, to, args->flag); 1002#endif 1003 1004 follow = (args->flag & LINUX_AT_SYMLINK_FOLLOW) == 0 ? NOFOLLOW : 1005 FOLLOW; 1006 error = kern_linkat(td, olddfd, newdfd, path, to, UIO_SYSSPACE, follow); 1007 LFREEPATH(path); 1008 LFREEPATH(to); 1009 return (error); 1010} 1011 1012int 1013linux_fdatasync(td, uap) 1014 struct thread *td; 1015 struct linux_fdatasync_args *uap; 1016{ 1017 struct fsync_args bsd; 1018 1019 bsd.fd = uap->fd; 1020 return sys_fsync(td, &bsd); 1021} 1022 1023int 1024linux_pread(td, uap) 1025 struct thread *td; 1026 struct linux_pread_args *uap; 1027{ 1028 struct pread_args bsd; 1029 cap_rights_t rights; 1030 struct vnode *vp; 1031 int error; 1032 1033 bsd.fd = uap->fd; 1034 bsd.buf = uap->buf; 1035 bsd.nbyte = uap->nbyte; 1036 bsd.offset = uap->offset; 1037 1038 error = sys_pread(td, &bsd); 1039 1040 if (error == 0) { 1041 /* This seems to violate POSIX but linux does it */ 1042 error = fgetvp(td, uap->fd, 1043 cap_rights_init(&rights, CAP_PREAD), &vp); 1044 if (error != 0) 1045 return (error); 1046 if (vp->v_type == VDIR) { 1047 vrele(vp); 1048 return (EISDIR); 1049 } 1050 vrele(vp); 1051 } 1052 1053 return (error); 1054} 1055 1056int 1057linux_pwrite(td, uap) 1058 struct thread *td; 1059 struct linux_pwrite_args *uap; 1060{ 1061 struct pwrite_args bsd; 1062 1063 bsd.fd = uap->fd; 1064 bsd.buf = uap->buf; 1065 bsd.nbyte = uap->nbyte; 1066 bsd.offset = uap->offset; 1067 return sys_pwrite(td, &bsd); 1068} 1069 1070int 1071linux_mount(struct thread *td, struct linux_mount_args *args) 1072{ 1073 char fstypename[MFSNAMELEN]; 1074 char mntonname[MNAMELEN], mntfromname[MNAMELEN]; 1075 int error; 1076 int fsflags; 1077 1078 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1, 1079 NULL); 1080 if (error) 1081 return (error); 1082 error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL); 1083 if (error) 1084 return (error); 1085 error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL); 1086 if (error) 1087 return (error); 1088 1089#ifdef DEBUG 1090 if (ldebug(mount)) 1091 printf(ARGS(mount, "%s, %s, %s"), 1092 fstypename, mntfromname, mntonname); 1093#endif 1094 1095 if (strcmp(fstypename, "ext2") == 0) { 1096 strcpy(fstypename, "ext2fs"); 1097 } else if (strcmp(fstypename, "proc") == 0) { 1098 strcpy(fstypename, "linprocfs"); 1099 } else if (strcmp(fstypename, "vfat") == 0) { 1100 strcpy(fstypename, "msdosfs"); 1101 } 1102 1103 fsflags = 0; 1104 1105 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) { 1106 /* 1107 * Linux SYNC flag is not included; the closest equivalent 1108 * FreeBSD has is !ASYNC, which is our default. 1109 */ 1110 if (args->rwflag & LINUX_MS_RDONLY) 1111 fsflags |= MNT_RDONLY; 1112 if (args->rwflag & LINUX_MS_NOSUID) 1113 fsflags |= MNT_NOSUID; 1114 if (args->rwflag & LINUX_MS_NOEXEC) 1115 fsflags |= MNT_NOEXEC; 1116 if (args->rwflag & LINUX_MS_REMOUNT) 1117 fsflags |= MNT_UPDATE; 1118 } 1119 1120 error = kernel_vmount(fsflags, 1121 "fstype", fstypename, 1122 "fspath", mntonname, 1123 "from", mntfromname, 1124 NULL); 1125 return (error); 1126} 1127 1128#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1129int 1130linux_oldumount(struct thread *td, struct linux_oldumount_args *args) 1131{ 1132 struct linux_umount_args args2; 1133 1134 args2.path = args->path; 1135 args2.flags = 0; 1136 return (linux_umount(td, &args2)); 1137} 1138#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1139 1140int 1141linux_umount(struct thread *td, struct linux_umount_args *args) 1142{ 1143 struct unmount_args bsd; 1144 1145 bsd.path = args->path; 1146 bsd.flags = args->flags; /* XXX correct? */ 1147 return (sys_unmount(td, &bsd)); 1148} 1149 1150/* 1151 * fcntl family of syscalls 1152 */ 1153 1154struct l_flock { 1155 l_short l_type; 1156 l_short l_whence; 1157 l_off_t l_start; 1158 l_off_t l_len; 1159 l_pid_t l_pid; 1160} 1161#if defined(__amd64__) && defined(COMPAT_LINUX32) 1162__packed 1163#endif 1164; 1165 1166static void 1167linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock) 1168{ 1169 switch (linux_flock->l_type) { 1170 case LINUX_F_RDLCK: 1171 bsd_flock->l_type = F_RDLCK; 1172 break; 1173 case LINUX_F_WRLCK: 1174 bsd_flock->l_type = F_WRLCK; 1175 break; 1176 case LINUX_F_UNLCK: 1177 bsd_flock->l_type = F_UNLCK; 1178 break; 1179 default: 1180 bsd_flock->l_type = -1; 1181 break; 1182 } 1183 bsd_flock->l_whence = linux_flock->l_whence; 1184 bsd_flock->l_start = (off_t)linux_flock->l_start; 1185 bsd_flock->l_len = (off_t)linux_flock->l_len; 1186 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1187 bsd_flock->l_sysid = 0; 1188} 1189 1190static void 1191bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock) 1192{ 1193 switch (bsd_flock->l_type) { 1194 case F_RDLCK: 1195 linux_flock->l_type = LINUX_F_RDLCK; 1196 break; 1197 case F_WRLCK: 1198 linux_flock->l_type = LINUX_F_WRLCK; 1199 break; 1200 case F_UNLCK: 1201 linux_flock->l_type = LINUX_F_UNLCK; 1202 break; 1203 } 1204 linux_flock->l_whence = bsd_flock->l_whence; 1205 linux_flock->l_start = (l_off_t)bsd_flock->l_start; 1206 linux_flock->l_len = (l_off_t)bsd_flock->l_len; 1207 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1208} 1209 1210#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 1211struct l_flock64 { 1212 l_short l_type; 1213 l_short l_whence; 1214 l_loff_t l_start; 1215 l_loff_t l_len; 1216 l_pid_t l_pid; 1217} 1218#if defined(__amd64__) && defined(COMPAT_LINUX32) 1219__packed 1220#endif 1221; 1222 1223static void 1224linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock) 1225{ 1226 switch (linux_flock->l_type) { 1227 case LINUX_F_RDLCK: 1228 bsd_flock->l_type = F_RDLCK; 1229 break; 1230 case LINUX_F_WRLCK: 1231 bsd_flock->l_type = F_WRLCK; 1232 break; 1233 case LINUX_F_UNLCK: 1234 bsd_flock->l_type = F_UNLCK; 1235 break; 1236 default: 1237 bsd_flock->l_type = -1; 1238 break; 1239 } 1240 bsd_flock->l_whence = linux_flock->l_whence; 1241 bsd_flock->l_start = (off_t)linux_flock->l_start; 1242 bsd_flock->l_len = (off_t)linux_flock->l_len; 1243 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1244 bsd_flock->l_sysid = 0; 1245} 1246 1247static void 1248bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock) 1249{ 1250 switch (bsd_flock->l_type) { 1251 case F_RDLCK: 1252 linux_flock->l_type = LINUX_F_RDLCK; 1253 break; 1254 case F_WRLCK: 1255 linux_flock->l_type = LINUX_F_WRLCK; 1256 break; 1257 case F_UNLCK: 1258 linux_flock->l_type = LINUX_F_UNLCK; 1259 break; 1260 } 1261 linux_flock->l_whence = bsd_flock->l_whence; 1262 linux_flock->l_start = (l_loff_t)bsd_flock->l_start; 1263 linux_flock->l_len = (l_loff_t)bsd_flock->l_len; 1264 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 1265} 1266#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 1267 1268static int 1269fcntl_common(struct thread *td, struct linux_fcntl_args *args) 1270{ 1271 struct l_flock linux_flock; 1272 struct flock bsd_flock; 1273 cap_rights_t rights; 1274 struct file *fp; 1275 long arg; 1276 int error, result; 1277 1278 switch (args->cmd) { 1279 case LINUX_F_DUPFD: 1280 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg)); 1281 1282 case LINUX_F_GETFD: 1283 return (kern_fcntl(td, args->fd, F_GETFD, 0)); 1284 1285 case LINUX_F_SETFD: 1286 return (kern_fcntl(td, args->fd, F_SETFD, args->arg)); 1287 1288 case LINUX_F_GETFL: 1289 error = kern_fcntl(td, args->fd, F_GETFL, 0); 1290 result = td->td_retval[0]; 1291 td->td_retval[0] = 0; 1292 if (result & O_RDONLY) 1293 td->td_retval[0] |= LINUX_O_RDONLY; 1294 if (result & O_WRONLY) 1295 td->td_retval[0] |= LINUX_O_WRONLY; 1296 if (result & O_RDWR) 1297 td->td_retval[0] |= LINUX_O_RDWR; 1298 if (result & O_NDELAY) 1299 td->td_retval[0] |= LINUX_O_NONBLOCK; 1300 if (result & O_APPEND) 1301 td->td_retval[0] |= LINUX_O_APPEND; 1302 if (result & O_FSYNC) 1303 td->td_retval[0] |= LINUX_O_SYNC; 1304 if (result & O_ASYNC) 1305 td->td_retval[0] |= LINUX_FASYNC; 1306#ifdef LINUX_O_NOFOLLOW 1307 if (result & O_NOFOLLOW) 1308 td->td_retval[0] |= LINUX_O_NOFOLLOW; 1309#endif 1310#ifdef LINUX_O_DIRECT 1311 if (result & O_DIRECT) 1312 td->td_retval[0] |= LINUX_O_DIRECT; 1313#endif 1314 return (error); 1315 1316 case LINUX_F_SETFL: 1317 arg = 0; 1318 if (args->arg & LINUX_O_NDELAY) 1319 arg |= O_NONBLOCK; 1320 if (args->arg & LINUX_O_APPEND) 1321 arg |= O_APPEND; 1322 if (args->arg & LINUX_O_SYNC) 1323 arg |= O_FSYNC; 1324 if (args->arg & LINUX_FASYNC) 1325 arg |= O_ASYNC; 1326#ifdef LINUX_O_NOFOLLOW 1327 if (args->arg & LINUX_O_NOFOLLOW) 1328 arg |= O_NOFOLLOW; 1329#endif 1330#ifdef LINUX_O_DIRECT 1331 if (args->arg & LINUX_O_DIRECT) 1332 arg |= O_DIRECT; 1333#endif 1334 return (kern_fcntl(td, args->fd, F_SETFL, arg)); 1335 1336 case LINUX_F_GETLK: 1337 error = copyin((void *)args->arg, &linux_flock, 1338 sizeof(linux_flock)); 1339 if (error) 1340 return (error); 1341 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1342 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock); 1343 if (error) 1344 return (error); 1345 bsd_to_linux_flock(&bsd_flock, &linux_flock); 1346 return (copyout(&linux_flock, (void *)args->arg, 1347 sizeof(linux_flock))); 1348 1349 case LINUX_F_SETLK: 1350 error = copyin((void *)args->arg, &linux_flock, 1351 sizeof(linux_flock)); 1352 if (error) 1353 return (error); 1354 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1355 return (kern_fcntl(td, args->fd, F_SETLK, 1356 (intptr_t)&bsd_flock)); 1357 1358 case LINUX_F_SETLKW: 1359 error = copyin((void *)args->arg, &linux_flock, 1360 sizeof(linux_flock)); 1361 if (error) 1362 return (error); 1363 linux_to_bsd_flock(&linux_flock, &bsd_flock); 1364 return (kern_fcntl(td, args->fd, F_SETLKW, 1365 (intptr_t)&bsd_flock)); 1366 1367 case LINUX_F_GETOWN: 1368 return (kern_fcntl(td, args->fd, F_GETOWN, 0)); 1369 1370 case LINUX_F_SETOWN: 1371 /* 1372 * XXX some Linux applications depend on F_SETOWN having no 1373 * significant effect for pipes (SIGIO is not delivered for 1374 * pipes under Linux-2.2.35 at least). 1375 */ 1376 error = fget(td, args->fd, 1377 cap_rights_init(&rights, CAP_FCNTL), &fp); 1378 if (error) 1379 return (error); 1380 if (fp->f_type == DTYPE_PIPE) { 1381 fdrop(fp, td); 1382 return (EINVAL); 1383 } 1384 fdrop(fp, td); 1385 1386 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg)); 1387 1388 case LINUX_F_DUPFD_CLOEXEC: 1389 return (kern_fcntl(td, args->fd, F_DUPFD_CLOEXEC, 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 1632int 1633linux_fallocate(struct thread *td, struct linux_fallocate_args *args) 1634{ 1635 1636 /* 1637 * We emulate only posix_fallocate system call for which 1638 * mode should be 0. 1639 */ 1640 if (args->mode != 0) 1641 return (ENOSYS); 1642 1643 return (kern_posix_fallocate(td, args->fd, args->offset, 1644 args->len)); 1645} 1646