linux_file.c revision 83221
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 withough 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 * $FreeBSD: head/sys/compat/linux/linux_file.c 83221 2001-09-08 19:07:04Z marcel $ 29 */ 30 31#include "opt_compat.h" 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/conf.h> 36#include <sys/dirent.h> 37#include <sys/fcntl.h> 38#include <sys/file.h> 39#include <sys/filedesc.h> 40#include <sys/lock.h> 41#include <sys/malloc.h> 42#include <sys/mount.h> 43#include <sys/mutex.h> 44#include <sys/proc.h> 45#include <sys/sysproto.h> 46#include <sys/tty.h> 47#include <sys/vnode.h> 48 49#include <ufs/ufs/extattr.h> 50#include <ufs/ufs/quota.h> 51#include <ufs/ufs/ufsmount.h> 52 53#include <machine/../linux/linux.h> 54#include <machine/../linux/linux_proto.h> 55#include <compat/linux/linux_util.h> 56 57#ifndef __alpha__ 58int 59linux_creat(struct proc *p, struct linux_creat_args *args) 60{ 61 struct open_args /* { 62 char *path; 63 int flags; 64 int mode; 65 } */ bsd_open_args; 66 caddr_t sg; 67 68 sg = stackgap_init(); 69 CHECKALTCREAT(p, &sg, args->path); 70 71#ifdef DEBUG 72 if (ldebug(creat)) 73 printf(ARGS(creat, "%s, %d"), args->path, args->mode); 74#endif 75 bsd_open_args.path = args->path; 76 bsd_open_args.mode = args->mode; 77 bsd_open_args.flags = O_WRONLY | O_CREAT | O_TRUNC; 78 return open(p, &bsd_open_args); 79} 80#endif /*!__alpha__*/ 81 82int 83linux_open(struct proc *p, struct linux_open_args *args) 84{ 85 struct open_args /* { 86 char *path; 87 int flags; 88 int mode; 89 } */ bsd_open_args; 90 int error; 91 caddr_t sg; 92 93 sg = stackgap_init(); 94 95 if (args->flags & LINUX_O_CREAT) 96 CHECKALTCREAT(p, &sg, args->path); 97 else 98 CHECKALTEXIST(p, &sg, args->path); 99 100#ifdef DEBUG 101 if (ldebug(open)) 102 printf(ARGS(open, "%s, 0x%x, 0x%x"), 103 args->path, args->flags, args->mode); 104#endif 105 bsd_open_args.flags = 0; 106 if (args->flags & LINUX_O_RDONLY) 107 bsd_open_args.flags |= O_RDONLY; 108 if (args->flags & LINUX_O_WRONLY) 109 bsd_open_args.flags |= O_WRONLY; 110 if (args->flags & LINUX_O_RDWR) 111 bsd_open_args.flags |= O_RDWR; 112 if (args->flags & LINUX_O_NDELAY) 113 bsd_open_args.flags |= O_NONBLOCK; 114 if (args->flags & LINUX_O_APPEND) 115 bsd_open_args.flags |= O_APPEND; 116 if (args->flags & LINUX_O_SYNC) 117 bsd_open_args.flags |= O_FSYNC; 118 if (args->flags & LINUX_O_NONBLOCK) 119 bsd_open_args.flags |= O_NONBLOCK; 120 if (args->flags & LINUX_FASYNC) 121 bsd_open_args.flags |= O_ASYNC; 122 if (args->flags & LINUX_O_CREAT) 123 bsd_open_args.flags |= O_CREAT; 124 if (args->flags & LINUX_O_TRUNC) 125 bsd_open_args.flags |= O_TRUNC; 126 if (args->flags & LINUX_O_EXCL) 127 bsd_open_args.flags |= O_EXCL; 128 if (args->flags & LINUX_O_NOCTTY) 129 bsd_open_args.flags |= O_NOCTTY; 130 bsd_open_args.path = args->path; 131 bsd_open_args.mode = args->mode; 132 133 error = open(p, &bsd_open_args); 134 PROC_LOCK(p); 135 if (!error && !(bsd_open_args.flags & O_NOCTTY) && 136 SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 137 struct filedesc *fdp = p->p_fd; 138 struct file *fp = fdp->fd_ofiles[p->p_retval[0]]; 139 140 PROC_UNLOCK(p); 141 if (fp->f_type == DTYPE_VNODE) 142 fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, p); 143 } else 144 PROC_UNLOCK(p); 145#ifdef DEBUG 146 if (ldebug(open)) 147 printf(LMSG("open returns error %d"), error); 148#endif 149 return error; 150} 151 152int 153linux_lseek(struct proc *p, struct linux_lseek_args *args) 154{ 155 156 struct lseek_args /* { 157 int fd; 158 int pad; 159 off_t offset; 160 int whence; 161 } */ tmp_args; 162 int error; 163 164#ifdef DEBUG 165 if (ldebug(lseek)) 166 printf(ARGS(lseek, "%d, %ld, %d"), 167 args->fdes, (long)args->off, args->whence); 168#endif 169 tmp_args.fd = args->fdes; 170 tmp_args.offset = (off_t)args->off; 171 tmp_args.whence = args->whence; 172 error = lseek(p, &tmp_args); 173 return error; 174} 175 176#ifndef __alpha__ 177int 178linux_llseek(struct proc *p, struct linux_llseek_args *args) 179{ 180 struct lseek_args bsd_args; 181 int error; 182 off_t off; 183 184#ifdef DEBUG 185 if (ldebug(llseek)) 186 printf(ARGS(llseek, "%d, %d:%d, %d"), 187 args->fd, args->ohigh, args->olow, args->whence); 188#endif 189 off = (args->olow) | (((off_t) args->ohigh) << 32); 190 191 bsd_args.fd = args->fd; 192 bsd_args.offset = off; 193 bsd_args.whence = args->whence; 194 195 if ((error = lseek(p, &bsd_args))) 196 return error; 197 198 if ((error = copyout(p->p_retval, (caddr_t)args->res, sizeof (off_t)))) 199 return error; 200 201 p->p_retval[0] = 0; 202 return 0; 203} 204#endif /*!__alpha__*/ 205 206#ifndef __alpha__ 207int 208linux_readdir(struct proc *p, struct linux_readdir_args *args) 209{ 210 struct linux_getdents_args lda; 211 212 lda.fd = args->fd; 213 lda.dent = args->dent; 214 lda.count = 1; 215 return linux_getdents(p, &lda); 216} 217#endif /*!__alpha__*/ 218 219/* 220 * Note that linux_getdents(2) and linux_getdents64(2) have the same 221 * arguments. They only differ in the definition of struct dirent they 222 * operate on. We use this to common the code, with the exception of 223 * accessing struct dirent. Note that linux_readdir(2) is implemented 224 * by means of linux_getdents(2). In this case we never operate on 225 * struct dirent64 and thus don't need to handle it... 226 */ 227 228struct l_dirent { 229 l_long d_ino; 230 l_off_t d_off; 231 l_ushort d_reclen; 232 char d_name[LINUX_NAME_MAX + 1]; 233}; 234 235struct l_dirent64 { 236 uint64_t d_ino; 237 int64_t d_off; 238 l_ushort d_reclen; 239 u_char d_type; 240 char d_name[LINUX_NAME_MAX + 1]; 241}; 242 243#define LINUX_RECLEN(de,namlen) \ 244 ALIGN((((char *)&(de)->d_name - (char *)de) + (namlen) + 1)) 245 246#define LINUX_DIRBLKSIZ 512 247 248static int 249getdents_common(struct proc *p, struct linux_getdents64_args *args, 250 int is64bit) 251{ 252 register struct dirent *bdp; 253 struct vnode *vp; 254 caddr_t inp, buf; /* BSD-format */ 255 int len, reclen; /* BSD-format */ 256 caddr_t outp; /* Linux-format */ 257 int resid, linuxreclen=0; /* Linux-format */ 258 struct file *fp; 259 struct uio auio; 260 struct iovec aiov; 261 struct vattr va; 262 off_t off; 263 struct l_dirent linux_dirent; 264 struct l_dirent64 linux_dirent64; 265 int buflen, error, eofflag, nbytes, justone; 266 u_long *cookies = NULL, *cookiep; 267 int ncookies; 268 269 if ((error = getvnode(p->p_fd, args->fd, &fp)) != 0) 270 return (error); 271 272 if ((fp->f_flag & FREAD) == 0) 273 return (EBADF); 274 275 vp = (struct vnode *) fp->f_data; 276 if (vp->v_type != VDIR) 277 return (EINVAL); 278 279 if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p))) 280 return (error); 281 282 nbytes = args->count; 283 if (nbytes == 1) { 284 /* readdir(2) case. Always struct dirent. */ 285 if (is64bit) 286 return (EINVAL); 287 nbytes = sizeof(linux_dirent); 288 justone = 1; 289 } else 290 justone = 0; 291 292 off = fp->f_offset; 293 294 buflen = max(LINUX_DIRBLKSIZ, nbytes); 295 buflen = min(buflen, MAXBSIZE); 296 buf = malloc(buflen, M_TEMP, M_WAITOK); 297 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p); 298 299again: 300 aiov.iov_base = buf; 301 aiov.iov_len = buflen; 302 auio.uio_iov = &aiov; 303 auio.uio_iovcnt = 1; 304 auio.uio_rw = UIO_READ; 305 auio.uio_segflg = UIO_SYSSPACE; 306 auio.uio_procp = p; 307 auio.uio_resid = buflen; 308 auio.uio_offset = off; 309 310 if (cookies) { 311 free(cookies, M_TEMP); 312 cookies = NULL; 313 } 314 315 if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, 316 &cookies))) 317 goto out; 318 319 inp = buf; 320 outp = (caddr_t)args->dirent; 321 resid = nbytes; 322 if ((len = buflen - auio.uio_resid) <= 0) 323 goto eof; 324 325 cookiep = cookies; 326 327 if (cookies) { 328 /* 329 * When using cookies, the vfs has the option of reading from 330 * a different offset than that supplied (UFS truncates the 331 * offset to a block boundary to make sure that it never reads 332 * partway through a directory entry, even if the directory 333 * has been compacted). 334 */ 335 while (len > 0 && ncookies > 0 && *cookiep <= off) { 336 bdp = (struct dirent *) inp; 337 len -= bdp->d_reclen; 338 inp += bdp->d_reclen; 339 cookiep++; 340 ncookies--; 341 } 342 } 343 344 while (len > 0) { 345 if (cookiep && ncookies == 0) 346 break; 347 bdp = (struct dirent *) inp; 348 reclen = bdp->d_reclen; 349 if (reclen & 3) { 350 error = EFAULT; 351 goto out; 352 } 353 354 if (bdp->d_fileno == 0) { 355 inp += reclen; 356 if (cookiep) { 357 off = *cookiep++; 358 ncookies--; 359 } else 360 off += reclen; 361 362 len -= reclen; 363 continue; 364 } 365 366 linuxreclen = (is64bit) 367 ? LINUX_RECLEN(&linux_dirent64, bdp->d_namlen) 368 : LINUX_RECLEN(&linux_dirent, bdp->d_namlen); 369 370 if (reclen > len || resid < linuxreclen) { 371 outp++; 372 break; 373 } 374 375 if (justone) { 376 /* readdir(2) case. */ 377 linux_dirent.d_ino = (l_long)bdp->d_fileno; 378 linux_dirent.d_off = (l_off_t)linuxreclen; 379 linux_dirent.d_reclen = (l_ushort)bdp->d_namlen; 380 strcpy(linux_dirent.d_name, bdp->d_name); 381 error = copyout(&linux_dirent, outp, linuxreclen); 382 } else { 383 if (is64bit) { 384 linux_dirent64.d_ino = bdp->d_fileno; 385 linux_dirent64.d_off = (cookiep) 386 ? (l_off_t)*cookiep 387 : (l_off_t)(off + reclen); 388 linux_dirent64.d_reclen = 389 (l_ushort)linuxreclen; 390 linux_dirent64.d_type = bdp->d_type; 391 strcpy(linux_dirent64.d_name, bdp->d_name); 392 error = copyout(&linux_dirent64, outp, 393 linuxreclen); 394 } else { 395 linux_dirent.d_ino = bdp->d_fileno; 396 linux_dirent.d_off = (cookiep) 397 ? (l_off_t)*cookiep 398 : (l_off_t)(off + reclen); 399 linux_dirent.d_reclen = (l_ushort)linuxreclen; 400 strcpy(linux_dirent.d_name, bdp->d_name); 401 error = copyout(&linux_dirent, outp, 402 linuxreclen); 403 } 404 } 405 if (error) 406 goto out; 407 408 inp += reclen; 409 if (cookiep) { 410 off = *cookiep++; 411 ncookies--; 412 } else 413 off += reclen; 414 415 outp += linuxreclen; 416 resid -= linuxreclen; 417 len -= reclen; 418 if (justone) 419 break; 420 } 421 422 if (outp == (caddr_t)args->dirent) 423 goto again; 424 425 fp->f_offset = off; 426 if (justone) 427 nbytes = resid + linuxreclen; 428 429eof: 430 p->p_retval[0] = nbytes - resid; 431 432out: 433 if (cookies) 434 free(cookies, M_TEMP); 435 436 VOP_UNLOCK(vp, 0, p); 437 free(buf, M_TEMP); 438 return (error); 439} 440 441int 442linux_getdents(struct proc *p, struct linux_getdents_args *args) 443{ 444 445#ifdef DEBUG 446 if (ldebug(getdents)) 447 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count); 448#endif 449 450 return (getdents_common(p, (struct linux_getdents64_args*)args, 0)); 451} 452 453int 454linux_getdents64(struct proc *p, struct linux_getdents64_args *args) 455{ 456 457#ifdef DEBUG 458 if (ldebug(getdents64)) 459 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count); 460#endif 461 462 return (getdents_common(p, args, 1)); 463} 464 465/* 466 * These exist mainly for hooks for doing /compat/linux translation. 467 */ 468 469int 470linux_access(struct proc *p, struct linux_access_args *args) 471{ 472 struct access_args bsd; 473 caddr_t sg; 474 475 sg = stackgap_init(); 476 CHECKALTEXIST(p, &sg, args->path); 477 478#ifdef DEBUG 479 if (ldebug(access)) 480 printf(ARGS(access, "%s, %d"), args->path, args->flags); 481#endif 482 bsd.path = args->path; 483 bsd.flags = args->flags; 484 485 return access(p, &bsd); 486} 487 488int 489linux_unlink(struct proc *p, struct linux_unlink_args *args) 490{ 491 struct unlink_args bsd; 492 caddr_t sg; 493 494 sg = stackgap_init(); 495 CHECKALTEXIST(p, &sg, args->path); 496 497#ifdef DEBUG 498 if (ldebug(unlink)) 499 printf(ARGS(unlink, "%s"), args->path); 500#endif 501 bsd.path = args->path; 502 503 return unlink(p, &bsd); 504} 505 506int 507linux_chdir(struct proc *p, struct linux_chdir_args *args) 508{ 509 struct chdir_args bsd; 510 caddr_t sg; 511 512 sg = stackgap_init(); 513 CHECKALTEXIST(p, &sg, args->path); 514 515#ifdef DEBUG 516 if (ldebug(chdir)) 517 printf(ARGS(chdir, "%s"), args->path); 518#endif 519 bsd.path = args->path; 520 521 return chdir(p, &bsd); 522} 523 524int 525linux_chmod(struct proc *p, struct linux_chmod_args *args) 526{ 527 struct chmod_args bsd; 528 caddr_t sg; 529 530 sg = stackgap_init(); 531 CHECKALTEXIST(p, &sg, args->path); 532 533#ifdef DEBUG 534 if (ldebug(chmod)) 535 printf(ARGS(chmod, "%s, %d"), args->path, args->mode); 536#endif 537 bsd.path = args->path; 538 bsd.mode = args->mode; 539 540 return chmod(p, &bsd); 541} 542 543int 544linux_mkdir(struct proc *p, struct linux_mkdir_args *args) 545{ 546 struct mkdir_args bsd; 547 caddr_t sg; 548 549 sg = stackgap_init(); 550 CHECKALTCREAT(p, &sg, args->path); 551 552#ifdef DEBUG 553 if (ldebug(mkdir)) 554 printf(ARGS(mkdir, "%s, %d"), args->path, args->mode); 555#endif 556 bsd.path = args->path; 557 bsd.mode = args->mode; 558 559 return mkdir(p, &bsd); 560} 561 562int 563linux_rmdir(struct proc *p, struct linux_rmdir_args *args) 564{ 565 struct rmdir_args bsd; 566 caddr_t sg; 567 568 sg = stackgap_init(); 569 CHECKALTEXIST(p, &sg, args->path); 570 571#ifdef DEBUG 572 if (ldebug(rmdir)) 573 printf(ARGS(rmdir, "%s"), args->path); 574#endif 575 bsd.path = args->path; 576 577 return rmdir(p, &bsd); 578} 579 580int 581linux_rename(struct proc *p, struct linux_rename_args *args) 582{ 583 struct rename_args bsd; 584 caddr_t sg; 585 586 sg = stackgap_init(); 587 CHECKALTEXIST(p, &sg, args->from); 588 CHECKALTCREAT(p, &sg, args->to); 589 590#ifdef DEBUG 591 if (ldebug(rename)) 592 printf(ARGS(rename, "%s, %s"), args->from, args->to); 593#endif 594 bsd.from = args->from; 595 bsd.to = args->to; 596 597 return rename(p, &bsd); 598} 599 600int 601linux_symlink(struct proc *p, struct linux_symlink_args *args) 602{ 603 struct symlink_args bsd; 604 caddr_t sg; 605 606 sg = stackgap_init(); 607 CHECKALTEXIST(p, &sg, args->path); 608 CHECKALTCREAT(p, &sg, args->to); 609 610#ifdef DEBUG 611 if (ldebug(symlink)) 612 printf(ARGS(symlink, "%s, %s"), args->path, args->to); 613#endif 614 bsd.path = args->path; 615 bsd.link = args->to; 616 617 return symlink(p, &bsd); 618} 619 620int 621linux_readlink(struct proc *p, struct linux_readlink_args *args) 622{ 623 struct readlink_args bsd; 624 caddr_t sg; 625 626 sg = stackgap_init(); 627 CHECKALTEXIST(p, &sg, args->name); 628 629#ifdef DEBUG 630 if (ldebug(readlink)) 631 printf(ARGS(readlink, "%s, %p, %d"), 632 args->name, (void *)args->buf, args->count); 633#endif 634 bsd.path = args->name; 635 bsd.buf = args->buf; 636 bsd.count = args->count; 637 638 return readlink(p, &bsd); 639} 640 641int 642linux_truncate(struct proc *p, struct linux_truncate_args *args) 643{ 644 struct truncate_args bsd; 645 caddr_t sg; 646 647 sg = stackgap_init(); 648 CHECKALTEXIST(p, &sg, args->path); 649 650#ifdef DEBUG 651 if (ldebug(truncate)) 652 printf(ARGS(truncate, "%s, %ld"), args->path, 653 (long)args->length); 654#endif 655 bsd.path = args->path; 656 bsd.length = args->length; 657 658 return truncate(p, &bsd); 659} 660 661int 662linux_link(struct proc *p, struct linux_link_args *args) 663{ 664 struct link_args bsd; 665 caddr_t sg; 666 667 sg = stackgap_init(); 668 CHECKALTEXIST(p, &sg, args->path); 669 CHECKALTCREAT(p, &sg, args->to); 670 671#ifdef DEBUG 672 if (ldebug(link)) 673 printf(ARGS(link, "%s, %s"), args->path, args->to); 674#endif 675 676 bsd.path = args->path; 677 bsd.link = args->to; 678 679 return link(p, &bsd); 680} 681 682#ifndef __alpha__ 683int 684linux_fdatasync(p, uap) 685 struct proc *p; 686 struct linux_fdatasync_args *uap; 687{ 688 struct fsync_args bsd; 689 690 bsd.fd = uap->fd; 691 return fsync(p, &bsd); 692} 693#endif /*!__alpha__*/ 694 695int 696linux_pread(p, uap) 697 struct proc *p; 698 struct linux_pread_args *uap; 699{ 700 struct pread_args bsd; 701 702 bsd.fd = uap->fd; 703 bsd.buf = uap->buf; 704 bsd.nbyte = uap->nbyte; 705 bsd.offset = uap->offset; 706 return pread(p, &bsd); 707} 708 709int 710linux_pwrite(p, uap) 711 struct proc *p; 712 struct linux_pwrite_args *uap; 713{ 714 struct pwrite_args bsd; 715 716 bsd.fd = uap->fd; 717 bsd.buf = uap->buf; 718 bsd.nbyte = uap->nbyte; 719 bsd.offset = uap->offset; 720 return pwrite(p, &bsd); 721} 722 723int 724linux_mount(struct proc *p, struct linux_mount_args *args) 725{ 726 struct ufs_args ufs; 727 char fstypename[MFSNAMELEN]; 728 char mntonname[MNAMELEN], mntfromname[MNAMELEN]; 729 int error; 730 int fsflags; 731 const char *fstype; 732 void *fsdata; 733 734 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1, 735 NULL); 736 if (error) 737 return (error); 738 error = copyinstr(args->specialfile, mntfromname, MFSNAMELEN - 1, NULL); 739 if (error) 740 return (error); 741 error = copyinstr(args->dir, mntonname, MFSNAMELEN - 1, NULL); 742 if (error) 743 return (error); 744 745#ifdef DEBUG 746 if (ldebug(mount)) 747 printf(ARGS(mount, "%s, %s, %s"), 748 fstypename, mntfromname, mntonname); 749#endif 750 751 if (strcmp(fstypename, "ext2") == 0) { 752 fstype = "ext2fs"; 753 fsdata = &ufs; 754 ufs.fspec = mntfromname; 755#define DEFAULT_ROOTID -2 756 ufs.export.ex_root = DEFAULT_ROOTID; 757 ufs.export.ex_flags = 758 args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0; 759 } else if (strcmp(fstypename, "proc") == 0) { 760 fstype = "linprocfs"; 761 fsdata = NULL; 762 } else { 763 return (ENODEV); 764 } 765 766 fsflags = 0; 767 768 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) { 769 /* 770 * Linux SYNC flag is not included; the closest equivalent 771 * FreeBSD has is !ASYNC, which is our default. 772 */ 773 if (args->rwflag & LINUX_MS_RDONLY) 774 fsflags |= MNT_RDONLY; 775 if (args->rwflag & LINUX_MS_NOSUID) 776 fsflags |= MNT_NOSUID; 777 if (args->rwflag & LINUX_MS_NODEV) 778 fsflags |= MNT_NODEV; 779 if (args->rwflag & LINUX_MS_NOEXEC) 780 fsflags |= MNT_NOEXEC; 781 if (args->rwflag & LINUX_MS_REMOUNT) 782 fsflags |= MNT_UPDATE; 783 } 784 785 return (vfs_mount(p, fstype, mntonname, fsflags, fsdata)); 786} 787 788int 789linux_oldumount(struct proc *p, struct linux_oldumount_args *args) 790{ 791 struct linux_umount_args args2; 792 793 args2.path = args->path; 794 args2.flags = 0; 795 return (linux_umount(p, &args2)); 796} 797 798int 799linux_umount(struct proc *p, struct linux_umount_args *args) 800{ 801 struct unmount_args bsd; 802 803 bsd.path = args->path; 804 bsd.flags = args->flags; /* XXX correct? */ 805 return (unmount(p, &bsd)); 806} 807 808/* 809 * fcntl family of syscalls 810 */ 811 812struct l_flock { 813 l_short l_type; 814 l_short l_whence; 815 l_off_t l_start; 816 l_off_t l_len; 817 l_pid_t l_pid; 818}; 819 820static void 821linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock) 822{ 823 switch (linux_flock->l_type) { 824 case LINUX_F_RDLCK: 825 bsd_flock->l_type = F_RDLCK; 826 break; 827 case LINUX_F_WRLCK: 828 bsd_flock->l_type = F_WRLCK; 829 break; 830 case LINUX_F_UNLCK: 831 bsd_flock->l_type = F_UNLCK; 832 break; 833 default: 834 bsd_flock->l_type = -1; 835 break; 836 } 837 bsd_flock->l_whence = linux_flock->l_whence; 838 bsd_flock->l_start = (off_t)linux_flock->l_start; 839 bsd_flock->l_len = (off_t)linux_flock->l_len; 840 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 841} 842 843static void 844bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock) 845{ 846 switch (bsd_flock->l_type) { 847 case F_RDLCK: 848 linux_flock->l_type = LINUX_F_RDLCK; 849 break; 850 case F_WRLCK: 851 linux_flock->l_type = LINUX_F_WRLCK; 852 break; 853 case F_UNLCK: 854 linux_flock->l_type = LINUX_F_UNLCK; 855 break; 856 } 857 linux_flock->l_whence = bsd_flock->l_whence; 858 linux_flock->l_start = (l_off_t)bsd_flock->l_start; 859 linux_flock->l_len = (l_off_t)bsd_flock->l_len; 860 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 861} 862 863#if defined(__i386__) 864struct l_flock64 { 865 l_short l_type; 866 l_short l_whence; 867 l_loff_t l_start; 868 l_loff_t l_len; 869 l_pid_t l_pid; 870}; 871 872static void 873linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock) 874{ 875 switch (linux_flock->l_type) { 876 case LINUX_F_RDLCK: 877 bsd_flock->l_type = F_RDLCK; 878 break; 879 case LINUX_F_WRLCK: 880 bsd_flock->l_type = F_WRLCK; 881 break; 882 case LINUX_F_UNLCK: 883 bsd_flock->l_type = F_UNLCK; 884 break; 885 default: 886 bsd_flock->l_type = -1; 887 break; 888 } 889 bsd_flock->l_whence = linux_flock->l_whence; 890 bsd_flock->l_start = (off_t)linux_flock->l_start; 891 bsd_flock->l_len = (off_t)linux_flock->l_len; 892 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 893} 894 895static void 896bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock) 897{ 898 switch (bsd_flock->l_type) { 899 case F_RDLCK: 900 linux_flock->l_type = LINUX_F_RDLCK; 901 break; 902 case F_WRLCK: 903 linux_flock->l_type = LINUX_F_WRLCK; 904 break; 905 case F_UNLCK: 906 linux_flock->l_type = LINUX_F_UNLCK; 907 break; 908 } 909 linux_flock->l_whence = bsd_flock->l_whence; 910 linux_flock->l_start = (l_loff_t)bsd_flock->l_start; 911 linux_flock->l_len = (l_loff_t)bsd_flock->l_len; 912 linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid; 913} 914#endif /* __i386__ */ 915 916#if defined(__alpha__) 917#define linux_fcntl64_args linux_fcntl_args 918#endif 919 920static int 921fcntl_common(struct proc *p, struct linux_fcntl64_args *args) 922{ 923 struct fcntl_args fcntl_args; 924 struct filedesc *fdp; 925 struct file *fp; 926 int error, result; 927 928 fcntl_args.fd = args->fd; 929 930 switch (args->cmd) { 931 case LINUX_F_DUPFD: 932 fcntl_args.cmd = F_DUPFD; 933 fcntl_args.arg = args->arg; 934 return (fcntl(p, &fcntl_args)); 935 936 case LINUX_F_GETFD: 937 fcntl_args.cmd = F_GETFD; 938 return (fcntl(p, &fcntl_args)); 939 940 case LINUX_F_SETFD: 941 fcntl_args.cmd = F_SETFD; 942 fcntl_args.arg = args->arg; 943 return (fcntl(p, &fcntl_args)); 944 945 case LINUX_F_GETFL: 946 fcntl_args.cmd = F_GETFL; 947 error = fcntl(p, &fcntl_args); 948 result = p->p_retval[0]; 949 p->p_retval[0] = 0; 950 if (result & O_RDONLY) 951 p->p_retval[0] |= LINUX_O_RDONLY; 952 if (result & O_WRONLY) 953 p->p_retval[0] |= LINUX_O_WRONLY; 954 if (result & O_RDWR) 955 p->p_retval[0] |= LINUX_O_RDWR; 956 if (result & O_NDELAY) 957 p->p_retval[0] |= LINUX_O_NONBLOCK; 958 if (result & O_APPEND) 959 p->p_retval[0] |= LINUX_O_APPEND; 960 if (result & O_FSYNC) 961 p->p_retval[0] |= LINUX_O_SYNC; 962 if (result & O_ASYNC) 963 p->p_retval[0] |= LINUX_FASYNC; 964 return (error); 965 966 case LINUX_F_SETFL: 967 fcntl_args.arg = 0; 968 if (args->arg & LINUX_O_NDELAY) 969 fcntl_args.arg |= O_NONBLOCK; 970 if (args->arg & LINUX_O_APPEND) 971 fcntl_args.arg |= O_APPEND; 972 if (args->arg & LINUX_O_SYNC) 973 fcntl_args.arg |= O_FSYNC; 974 if (args->arg & LINUX_FASYNC) 975 fcntl_args.arg |= O_ASYNC; 976 fcntl_args.cmd = F_SETFL; 977 return (fcntl(p, &fcntl_args)); 978 979 case LINUX_F_GETOWN: 980 fcntl_args.cmd = F_GETOWN; 981 return (fcntl(p, &fcntl_args)); 982 983 case LINUX_F_SETOWN: 984 /* 985 * XXX some Linux applications depend on F_SETOWN having no 986 * significant effect for pipes (SIGIO is not delivered for 987 * pipes under Linux-2.2.35 at least). 988 */ 989 fdp = p->p_fd; 990 if ((u_int)args->fd >= fdp->fd_nfiles || 991 (fp = fdp->fd_ofiles[args->fd]) == NULL) 992 return (EBADF); 993 if (fp->f_type == DTYPE_PIPE) 994 return (EINVAL); 995 996 fcntl_args.cmd = F_SETOWN; 997 fcntl_args.arg = args->arg; 998 return (fcntl(p, &fcntl_args)); 999 } 1000 1001 return (EINVAL); 1002} 1003 1004int 1005linux_fcntl(struct proc *p, struct linux_fcntl_args *args) 1006{ 1007 struct linux_fcntl64_args args64; 1008 struct fcntl_args fcntl_args; 1009 struct l_flock linux_flock; 1010 struct flock *bsd_flock; 1011 int error; 1012 caddr_t sg; 1013 1014 sg = stackgap_init(); 1015 bsd_flock = (struct flock *)stackgap_alloc(&sg, sizeof(bsd_flock)); 1016 1017#ifdef DEBUG 1018 if (ldebug(fcntl)) 1019 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd); 1020#endif 1021 1022 switch (args->cmd) { 1023 case LINUX_F_GETLK: 1024 error = copyin((caddr_t)args->arg, &linux_flock, 1025 sizeof(linux_flock)); 1026 if (error) 1027 return (error); 1028 linux_to_bsd_flock(&linux_flock, bsd_flock); 1029 fcntl_args.fd = args->fd; 1030 fcntl_args.cmd = F_GETLK; 1031 fcntl_args.arg = (long)bsd_flock; 1032 error = fcntl(p, &fcntl_args); 1033 if (error) 1034 return (error); 1035 bsd_to_linux_flock(bsd_flock, &linux_flock); 1036 return (copyout(&linux_flock, (caddr_t)args->arg, 1037 sizeof(linux_flock))); 1038 1039 case LINUX_F_SETLK: 1040 error = copyin((caddr_t)args->arg, &linux_flock, 1041 sizeof(linux_flock)); 1042 if (error) 1043 return (error); 1044 linux_to_bsd_flock(&linux_flock, bsd_flock); 1045 fcntl_args.fd = args->fd; 1046 fcntl_args.cmd = F_SETLK; 1047 fcntl_args.arg = (long)bsd_flock; 1048 return (fcntl(p, &fcntl_args)); 1049 1050 case LINUX_F_SETLKW: 1051 error = copyin((caddr_t)args->arg, &linux_flock, 1052 sizeof(linux_flock)); 1053 if (error) 1054 return (error); 1055 linux_to_bsd_flock(&linux_flock, bsd_flock); 1056 fcntl_args.fd = args->fd; 1057 fcntl_args.cmd = F_SETLKW; 1058 fcntl_args.arg = (long)bsd_flock; 1059 return (fcntl(p, &fcntl_args)); 1060 } 1061 1062 args64.fd = args->fd; 1063 args64.cmd = args->cmd; 1064 args64.arg = args->arg; 1065 return (fcntl_common(p, &args64)); 1066} 1067 1068#if defined(__i386__) 1069int 1070linux_fcntl64(struct proc *p, struct linux_fcntl64_args *args) 1071{ 1072 struct fcntl_args fcntl_args; 1073 struct l_flock64 linux_flock; 1074 struct flock *bsd_flock; 1075 int error; 1076 caddr_t sg; 1077 1078 sg = stackgap_init(); 1079 bsd_flock = (struct flock *)stackgap_alloc(&sg, sizeof(bsd_flock)); 1080 1081#ifdef DEBUG 1082 if (ldebug(fcntl64)) 1083 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd); 1084#endif 1085 1086 switch (args->cmd) { 1087 case LINUX_F_GETLK: 1088 error = copyin((caddr_t)args->arg, &linux_flock, 1089 sizeof(linux_flock)); 1090 if (error) 1091 return (error); 1092 linux_to_bsd_flock64(&linux_flock, bsd_flock); 1093 fcntl_args.fd = args->fd; 1094 fcntl_args.cmd = F_GETLK; 1095 fcntl_args.arg = (long)bsd_flock; 1096 error = fcntl(p, &fcntl_args); 1097 if (error) 1098 return (error); 1099 bsd_to_linux_flock64(bsd_flock, &linux_flock); 1100 return (copyout(&linux_flock, (caddr_t)args->arg, 1101 sizeof(linux_flock))); 1102 1103 case LINUX_F_SETLK: 1104 error = copyin((caddr_t)args->arg, &linux_flock, 1105 sizeof(linux_flock)); 1106 if (error) 1107 return (error); 1108 linux_to_bsd_flock64(&linux_flock, bsd_flock); 1109 fcntl_args.fd = args->fd; 1110 fcntl_args.cmd = F_SETLK; 1111 fcntl_args.arg = (long)bsd_flock; 1112 return (fcntl(p, &fcntl_args)); 1113 1114 case LINUX_F_SETLKW: 1115 error = copyin((caddr_t)args->arg, &linux_flock, 1116 sizeof(linux_flock)); 1117 if (error) 1118 return (error); 1119 linux_to_bsd_flock64(&linux_flock, bsd_flock); 1120 fcntl_args.fd = args->fd; 1121 fcntl_args.cmd = F_SETLKW; 1122 fcntl_args.arg = (long)bsd_flock; 1123 return (fcntl(p, &fcntl_args)); 1124 } 1125 1126 return (fcntl_common(p, args)); 1127} 1128#endif /* __i386__ */ 1129