linux_file.c revision 82518
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 82518 2001-08-29 19:05:27Z gallatin $ 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 152struct linux_flock { 153 short l_type; 154 short l_whence; 155 linux_off_t l_start; 156 linux_off_t l_len; 157 linux_pid_t l_pid; 158}; 159 160static void 161linux_to_bsd_flock(struct linux_flock *linux_flock, struct flock *bsd_flock) 162{ 163 switch (linux_flock->l_type) { 164 case LINUX_F_RDLCK: 165 bsd_flock->l_type = F_RDLCK; 166 break; 167 case LINUX_F_WRLCK: 168 bsd_flock->l_type = F_WRLCK; 169 break; 170 case LINUX_F_UNLCK: 171 bsd_flock->l_type = F_UNLCK; 172 break; 173 default: 174 bsd_flock->l_type = -1; 175 break; 176 } 177 bsd_flock->l_whence = linux_flock->l_whence; 178 bsd_flock->l_start = (off_t)linux_flock->l_start; 179 bsd_flock->l_len = (off_t)linux_flock->l_len; 180 bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 181} 182 183static void 184bsd_to_linux_flock(struct flock *bsd_flock, struct linux_flock *linux_flock) 185{ 186 switch (bsd_flock->l_type) { 187 case F_RDLCK: 188 linux_flock->l_type = LINUX_F_RDLCK; 189 break; 190 case F_WRLCK: 191 linux_flock->l_type = LINUX_F_WRLCK; 192 break; 193 case F_UNLCK: 194 linux_flock->l_type = LINUX_F_UNLCK; 195 break; 196 } 197 linux_flock->l_whence = bsd_flock->l_whence; 198 linux_flock->l_start = (linux_off_t)bsd_flock->l_start; 199 linux_flock->l_len = (linux_off_t)bsd_flock->l_len; 200 linux_flock->l_pid = (linux_pid_t)bsd_flock->l_pid; 201} 202 203int 204linux_fcntl(struct proc *p, struct linux_fcntl_args *args) 205{ 206 int error, result; 207 struct fcntl_args /* { 208 int fd; 209 int cmd; 210 long arg; 211 } */ fcntl_args; 212 struct linux_flock linux_flock; 213 struct flock *bsd_flock; 214 struct filedesc *fdp; 215 struct file *fp; 216 caddr_t sg; 217 218 sg = stackgap_init(); 219 bsd_flock = (struct flock *)stackgap_alloc(&sg, sizeof(struct flock)); 220 221#ifdef DEBUG 222 if (ldebug(fcntl)) 223 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd); 224#endif 225 fcntl_args.fd = args->fd; 226 227 switch (args->cmd) { 228 case LINUX_F_DUPFD: 229 fcntl_args.cmd = F_DUPFD; 230 fcntl_args.arg = args->arg; 231 return fcntl(p, &fcntl_args); 232 233 case LINUX_F_GETFD: 234 fcntl_args.cmd = F_GETFD; 235 return fcntl(p, &fcntl_args); 236 237 case LINUX_F_SETFD: 238 fcntl_args.cmd = F_SETFD; 239 fcntl_args.arg = args->arg; 240 return fcntl(p, &fcntl_args); 241 242 case LINUX_F_GETFL: 243 fcntl_args.cmd = F_GETFL; 244 error = fcntl(p, &fcntl_args); 245 result = p->p_retval[0]; 246 p->p_retval[0] = 0; 247 if (result & O_RDONLY) p->p_retval[0] |= LINUX_O_RDONLY; 248 if (result & O_WRONLY) p->p_retval[0] |= LINUX_O_WRONLY; 249 if (result & O_RDWR) p->p_retval[0] |= LINUX_O_RDWR; 250 if (result & O_NDELAY) p->p_retval[0] |= LINUX_O_NONBLOCK; 251 if (result & O_APPEND) p->p_retval[0] |= LINUX_O_APPEND; 252 if (result & O_FSYNC) p->p_retval[0] |= LINUX_O_SYNC; 253 if (result & O_ASYNC) p->p_retval[0] |= LINUX_FASYNC; 254 return error; 255 256 case LINUX_F_SETFL: 257 fcntl_args.arg = 0; 258 if (args->arg & LINUX_O_NDELAY) fcntl_args.arg |= O_NONBLOCK; 259 if (args->arg & LINUX_O_APPEND) fcntl_args.arg |= O_APPEND; 260 if (args->arg & LINUX_O_SYNC) fcntl_args.arg |= O_FSYNC; 261 if (args->arg & LINUX_FASYNC) fcntl_args.arg |= O_ASYNC; 262 fcntl_args.cmd = F_SETFL; 263 return fcntl(p, &fcntl_args); 264 265 case LINUX_F_GETLK: 266 if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock, 267 sizeof(struct linux_flock)))) 268 return error; 269 linux_to_bsd_flock(&linux_flock, bsd_flock); 270 fcntl_args.cmd = F_GETLK; 271 fcntl_args.arg = (long)bsd_flock; 272 error = fcntl(p, &fcntl_args); 273 if (error) 274 return error; 275 bsd_to_linux_flock(bsd_flock, &linux_flock); 276 return copyout((caddr_t)&linux_flock, (caddr_t)args->arg, 277 sizeof(struct linux_flock)); 278 279 case LINUX_F_SETLK: 280 if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock, 281 sizeof(struct linux_flock)))) 282 return error; 283 linux_to_bsd_flock(&linux_flock, bsd_flock); 284 fcntl_args.cmd = F_SETLK; 285 fcntl_args.arg = (long)bsd_flock; 286 return fcntl(p, &fcntl_args); 287 288 case LINUX_F_SETLKW: 289 if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock, 290 sizeof(struct linux_flock)))) 291 return error; 292 linux_to_bsd_flock(&linux_flock, bsd_flock); 293 fcntl_args.cmd = F_SETLKW; 294 fcntl_args.arg = (long)bsd_flock; 295 return fcntl(p, &fcntl_args); 296 297 case LINUX_F_GETOWN: 298 fcntl_args.cmd = F_GETOWN; 299 return fcntl(p, &fcntl_args); 300 301 case LINUX_F_SETOWN: 302 /* 303 * XXX some Linux applications depend on F_SETOWN having no 304 * significant effect for pipes (SIGIO is not delivered for 305 * pipes under Linux-2.2.35 at least). 306 */ 307 fdp = p->p_fd; 308 if ((u_int)args->fd >= fdp->fd_nfiles || 309 (fp = fdp->fd_ofiles[args->fd]) == NULL) 310 return EBADF; 311 if (fp->f_type == DTYPE_PIPE) 312 return EINVAL; 313 314 fcntl_args.cmd = F_SETOWN; 315 fcntl_args.arg = args->arg; 316 return fcntl(p, &fcntl_args); 317 } 318 return EINVAL; 319} 320 321int 322linux_lseek(struct proc *p, struct linux_lseek_args *args) 323{ 324 325 struct lseek_args /* { 326 int fd; 327 int pad; 328 off_t offset; 329 int whence; 330 } */ tmp_args; 331 int error; 332 333#ifdef DEBUG 334 if (ldebug(lseek)) 335 printf(ARGS(lseek, "%d, %ld, %d"), 336 args->fdes, args->off, args->whence); 337#endif 338 tmp_args.fd = args->fdes; 339 tmp_args.offset = (off_t)args->off; 340 tmp_args.whence = args->whence; 341 error = lseek(p, &tmp_args); 342 return error; 343} 344 345#ifndef __alpha__ 346int 347linux_llseek(struct proc *p, struct linux_llseek_args *args) 348{ 349 struct lseek_args bsd_args; 350 int error; 351 off_t off; 352 353#ifdef DEBUG 354 if (ldebug(llseek)) 355 printf(ARGS(llseek, "%d, %d:%d, %d"), 356 args->fd, args->ohigh, args->olow, args->whence); 357#endif 358 off = (args->olow) | (((off_t) args->ohigh) << 32); 359 360 bsd_args.fd = args->fd; 361 bsd_args.offset = off; 362 bsd_args.whence = args->whence; 363 364 if ((error = lseek(p, &bsd_args))) 365 return error; 366 367 if ((error = copyout(p->p_retval, (caddr_t)args->res, sizeof (off_t)))) 368 return error; 369 370 p->p_retval[0] = 0; 371 return 0; 372} 373#endif /*!__alpha__*/ 374 375 376struct linux_dirent { 377 long dino; 378 linux_off_t doff; 379 unsigned short dreclen; 380 char dname[LINUX_NAME_MAX + 1]; 381}; 382 383#define LINUX_RECLEN(de,namlen) \ 384 ALIGN((((char *)&(de)->dname - (char *)de) + (namlen) + 1)) 385 386#ifndef __alpha__ 387int 388linux_readdir(struct proc *p, struct linux_readdir_args *args) 389{ 390 struct linux_getdents_args lda; 391 392 lda.fd = args->fd; 393 lda.dent = args->dent; 394 lda.count = 1; 395 return linux_getdents(p, &lda); 396} 397#endif /*!__alpha__*/ 398 399int 400linux_getdents(struct proc *p, struct linux_getdents_args *args) 401{ 402 register struct dirent *bdp; 403 struct vnode *vp; 404 caddr_t inp, buf; /* BSD-format */ 405 int len, reclen; /* BSD-format */ 406 caddr_t outp; /* Linux-format */ 407 int resid, linuxreclen=0; /* Linux-format */ 408 struct file *fp; 409 struct uio auio; 410 struct iovec aiov; 411 struct vattr va; 412 off_t off; 413 struct linux_dirent linux_dirent; 414 int buflen, error, eofflag, nbytes, justone; 415 u_long *cookies = NULL, *cookiep; 416 int ncookies; 417 418#ifdef DEBUG 419 if (ldebug(getdents)) 420 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count); 421#endif 422 if ((error = getvnode(p->p_fd, args->fd, &fp)) != 0) { 423 return (error); 424 } 425 426 if ((fp->f_flag & FREAD) == 0) 427 return (EBADF); 428 429 vp = (struct vnode *) fp->f_data; 430 431 if (vp->v_type != VDIR) 432 return (EINVAL); 433 434 if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p))) { 435 return error; 436 } 437 438 nbytes = args->count; 439 if (nbytes == 1) { 440 nbytes = sizeof (struct linux_dirent); 441 justone = 1; 442 } 443 else 444 justone = 0; 445 446 off = fp->f_offset; 447#define DIRBLKSIZ 512 /* XXX we used to use ufs's DIRBLKSIZ */ 448 buflen = max(DIRBLKSIZ, nbytes); 449 buflen = min(buflen, MAXBSIZE); 450 buf = malloc(buflen, M_TEMP, M_WAITOK); 451 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p); 452again: 453 aiov.iov_base = buf; 454 aiov.iov_len = buflen; 455 auio.uio_iov = &aiov; 456 auio.uio_iovcnt = 1; 457 auio.uio_rw = UIO_READ; 458 auio.uio_segflg = UIO_SYSSPACE; 459 auio.uio_procp = p; 460 auio.uio_resid = buflen; 461 auio.uio_offset = off; 462 463 if (cookies) { 464 free(cookies, M_TEMP); 465 cookies = NULL; 466 } 467 468 error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, &cookies); 469 if (error) { 470 goto out; 471 } 472 473 inp = buf; 474 outp = (caddr_t) args->dent; 475 resid = nbytes; 476 if ((len = buflen - auio.uio_resid) <= 0) { 477 goto eof; 478 } 479 480 cookiep = cookies; 481 482 if (cookies) { 483 /* 484 * When using cookies, the vfs has the option of reading from 485 * a different offset than that supplied (UFS truncates the 486 * offset to a block boundary to make sure that it never reads 487 * partway through a directory entry, even if the directory 488 * has been compacted). 489 */ 490 while (len > 0 && ncookies > 0 && *cookiep <= off) { 491 bdp = (struct dirent *) inp; 492 len -= bdp->d_reclen; 493 inp += bdp->d_reclen; 494 cookiep++; 495 ncookies--; 496 } 497 } 498 499 while (len > 0) { 500 if (cookiep && ncookies == 0) 501 break; 502 bdp = (struct dirent *) inp; 503 reclen = bdp->d_reclen; 504 if (reclen & 3) { 505 printf("linux_readdir: reclen=%d\n", reclen); 506 error = EFAULT; 507 goto out; 508 } 509 510 if (bdp->d_fileno == 0) { 511 inp += reclen; 512 if (cookiep) { 513 off = *cookiep++; 514 ncookies--; 515 } else 516 off += reclen; 517 len -= reclen; 518 continue; 519 } 520 linuxreclen = LINUX_RECLEN(&linux_dirent, bdp->d_namlen); 521 if (reclen > len || resid < linuxreclen) { 522 outp++; 523 break; 524 } 525 linux_dirent.dino = (long) bdp->d_fileno; 526 if (justone) { 527 /* 528 * old linux-style readdir usage. 529 */ 530 linux_dirent.doff = (linux_off_t) linuxreclen; 531 linux_dirent.dreclen = (u_short) bdp->d_namlen; 532 } else { 533 if (cookiep) 534 linux_dirent.doff = (linux_off_t)*cookiep; 535 else 536 linux_dirent.doff = (linux_off_t)(off + reclen); 537 linux_dirent.dreclen = (u_short) linuxreclen; 538 } 539 strcpy(linux_dirent.dname, bdp->d_name); 540 if ((error = copyout((caddr_t)&linux_dirent, outp, linuxreclen))) { 541 goto out; 542 } 543 inp += reclen; 544 if (cookiep) { 545 off = *cookiep++; 546 ncookies--; 547 } else 548 off += reclen; 549 outp += linuxreclen; 550 resid -= linuxreclen; 551 len -= reclen; 552 if (justone) 553 break; 554 } 555 556 if (outp == (caddr_t) args->dent) 557 goto again; 558 fp->f_offset = off; 559 560 if (justone) 561 nbytes = resid + linuxreclen; 562 563eof: 564 p->p_retval[0] = nbytes - resid; 565out: 566 if (cookies) 567 free(cookies, M_TEMP); 568 VOP_UNLOCK(vp, 0, p); 569 free(buf, M_TEMP); 570 return error; 571} 572 573/* 574 * These exist mainly for hooks for doing /compat/linux translation. 575 */ 576 577int 578linux_access(struct proc *p, struct linux_access_args *args) 579{ 580 struct access_args bsd; 581 caddr_t sg; 582 583 sg = stackgap_init(); 584 CHECKALTEXIST(p, &sg, args->path); 585 586#ifdef DEBUG 587 if (ldebug(access)) 588 printf(ARGS(access, "%s, %d"), args->path, args->flags); 589#endif 590 bsd.path = args->path; 591 bsd.flags = args->flags; 592 593 return access(p, &bsd); 594} 595 596int 597linux_unlink(struct proc *p, struct linux_unlink_args *args) 598{ 599 struct unlink_args bsd; 600 caddr_t sg; 601 602 sg = stackgap_init(); 603 CHECKALTEXIST(p, &sg, args->path); 604 605#ifdef DEBUG 606 if (ldebug(unlink)) 607 printf(ARGS(unlink, "%s"), args->path); 608#endif 609 bsd.path = args->path; 610 611 return unlink(p, &bsd); 612} 613 614int 615linux_chdir(struct proc *p, struct linux_chdir_args *args) 616{ 617 struct chdir_args bsd; 618 caddr_t sg; 619 620 sg = stackgap_init(); 621 CHECKALTEXIST(p, &sg, args->path); 622 623#ifdef DEBUG 624 if (ldebug(chdir)) 625 printf(ARGS(chdir, "%s"), args->path); 626#endif 627 bsd.path = args->path; 628 629 return chdir(p, &bsd); 630} 631 632int 633linux_chmod(struct proc *p, struct linux_chmod_args *args) 634{ 635 struct chmod_args bsd; 636 caddr_t sg; 637 638 sg = stackgap_init(); 639 CHECKALTEXIST(p, &sg, args->path); 640 641#ifdef DEBUG 642 if (ldebug(chmod)) 643 printf(ARGS(chmod, "%s, %d"), args->path, args->mode); 644#endif 645 bsd.path = args->path; 646 bsd.mode = args->mode; 647 648 return chmod(p, &bsd); 649} 650 651int 652linux_chown(struct proc *p, struct linux_chown_args *args) 653{ 654 struct chown_args bsd; 655 caddr_t sg; 656 657 sg = stackgap_init(); 658 CHECKALTEXIST(p, &sg, args->path); 659 660#ifdef DEBUG 661 if (ldebug(chown)) 662 printf(ARGS(chown, "%s, %d, %d"), 663 args->path, args->uid, args->gid); 664#endif 665 bsd.path = args->path; 666 /* XXX size casts here */ 667 bsd.uid = args->uid; 668 bsd.gid = args->gid; 669 670 return chown(p, &bsd); 671} 672 673int 674linux_lchown(struct proc *p, struct linux_lchown_args *args) 675{ 676 struct lchown_args bsd; 677 caddr_t sg; 678 679 sg = stackgap_init(); 680 CHECKALTEXIST(p, &sg, args->path); 681 682#ifdef DEBUG 683 if (ldebug(lchown)) 684 printf(ARGS(lchown, "%s, %d, %d"), 685 args->path, args->uid, args->gid); 686#endif 687 bsd.path = args->path; 688 /* XXX size casts here */ 689 bsd.uid = args->uid; 690 bsd.gid = args->gid; 691 692 return lchown(p, &bsd); 693} 694 695int 696linux_mkdir(struct proc *p, struct linux_mkdir_args *args) 697{ 698 struct mkdir_args bsd; 699 caddr_t sg; 700 701 sg = stackgap_init(); 702 CHECKALTCREAT(p, &sg, args->path); 703 704#ifdef DEBUG 705 if (ldebug(mkdir)) 706 printf(ARGS(mkdir, "%s, %d"), args->path, args->mode); 707#endif 708 bsd.path = args->path; 709 bsd.mode = args->mode; 710 711 return mkdir(p, &bsd); 712} 713 714int 715linux_rmdir(struct proc *p, struct linux_rmdir_args *args) 716{ 717 struct rmdir_args bsd; 718 caddr_t sg; 719 720 sg = stackgap_init(); 721 CHECKALTEXIST(p, &sg, args->path); 722 723#ifdef DEBUG 724 if (ldebug(rmdir)) 725 printf(ARGS(rmdir, "%s"), args->path); 726#endif 727 bsd.path = args->path; 728 729 return rmdir(p, &bsd); 730} 731 732int 733linux_rename(struct proc *p, struct linux_rename_args *args) 734{ 735 struct rename_args bsd; 736 caddr_t sg; 737 738 sg = stackgap_init(); 739 CHECKALTEXIST(p, &sg, args->from); 740 CHECKALTCREAT(p, &sg, args->to); 741 742#ifdef DEBUG 743 if (ldebug(rename)) 744 printf(ARGS(rename, "%s, %s"), args->from, args->to); 745#endif 746 bsd.from = args->from; 747 bsd.to = args->to; 748 749 return rename(p, &bsd); 750} 751 752int 753linux_symlink(struct proc *p, struct linux_symlink_args *args) 754{ 755 struct symlink_args bsd; 756 caddr_t sg; 757 758 sg = stackgap_init(); 759 CHECKALTEXIST(p, &sg, args->path); 760 CHECKALTCREAT(p, &sg, args->to); 761 762#ifdef DEBUG 763 if (ldebug(symlink)) 764 printf(ARGS(symlink, "%s, %s"), args->path, args->to); 765#endif 766 bsd.path = args->path; 767 bsd.link = args->to; 768 769 return symlink(p, &bsd); 770} 771 772int 773linux_readlink(struct proc *p, struct linux_readlink_args *args) 774{ 775 struct readlink_args bsd; 776 caddr_t sg; 777 778 sg = stackgap_init(); 779 CHECKALTEXIST(p, &sg, args->name); 780 781#ifdef DEBUG 782 if (ldebug(readlink)) 783 printf(ARGS(readlink, "%s, %p, %d"), 784 args->name, (void *)args->buf, args->count); 785#endif 786 bsd.path = args->name; 787 bsd.buf = args->buf; 788 bsd.count = args->count; 789 790 return readlink(p, &bsd); 791} 792 793int 794linux_truncate(struct proc *p, struct linux_truncate_args *args) 795{ 796 struct truncate_args bsd; 797 caddr_t sg; 798 799 sg = stackgap_init(); 800 CHECKALTEXIST(p, &sg, args->path); 801 802#ifdef DEBUG 803 if (ldebug(truncate)) 804 printf(ARGS(truncate, "%s, %ld"), args->path, args->length); 805#endif 806 bsd.path = args->path; 807 bsd.length = args->length; 808 809 return truncate(p, &bsd); 810} 811 812int 813linux_link(struct proc *p, struct linux_link_args *args) 814{ 815 struct link_args bsd; 816 caddr_t sg; 817 818 sg = stackgap_init(); 819 CHECKALTEXIST(p, &sg, args->path); 820 CHECKALTCREAT(p, &sg, args->to); 821 822#ifdef DEBUG 823 if (ldebug(link)) 824 printf(ARGS(link, "%s, %s"), args->path, args->to); 825#endif 826 827 bsd.path = args->path; 828 bsd.link = args->to; 829 830 return link(p, &bsd); 831} 832 833#ifndef __alpha__ 834int 835linux_fdatasync(p, uap) 836 struct proc *p; 837 struct linux_fdatasync_args *uap; 838{ 839 struct fsync_args bsd; 840 841 bsd.fd = uap->fd; 842 return fsync(p, &bsd); 843} 844#endif /*!__alpha__*/ 845 846int 847linux_pread(p, uap) 848 struct proc *p; 849 struct linux_pread_args *uap; 850{ 851 struct pread_args bsd; 852 853 bsd.fd = uap->fd; 854 bsd.buf = uap->buf; 855 bsd.nbyte = uap->nbyte; 856 bsd.offset = uap->offset; 857 return pread(p, &bsd); 858} 859 860int 861linux_pwrite(p, uap) 862 struct proc *p; 863 struct linux_pwrite_args *uap; 864{ 865 struct pwrite_args bsd; 866 867 bsd.fd = uap->fd; 868 bsd.buf = uap->buf; 869 bsd.nbyte = uap->nbyte; 870 bsd.offset = uap->offset; 871 return pwrite(p, &bsd); 872} 873 874int 875linux_mount(struct proc *p, struct linux_mount_args *args) 876{ 877 struct ufs_args ufs; 878 char fstypename[MFSNAMELEN]; 879 char mntonname[MNAMELEN], mntfromname[MNAMELEN]; 880 int error; 881 int fsflags; 882 const char *fstype; 883 void *fsdata; 884 885 error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1, 886 NULL); 887 if (error) 888 return (error); 889 error = copyinstr(args->specialfile, mntfromname, MFSNAMELEN - 1, NULL); 890 if (error) 891 return (error); 892 error = copyinstr(args->dir, mntonname, MFSNAMELEN - 1, NULL); 893 if (error) 894 return (error); 895 896#ifdef DEBUG 897 if (ldebug(mount)) 898 printf(ARGS(mount, "%s, %s, %s"), 899 fstypename, mntfromname, mntonname); 900#endif 901 902 if (strcmp(fstypename, "ext2") == 0) { 903 fstype = "ext2fs"; 904 fsdata = &ufs; 905 ufs.fspec = mntfromname; 906#define DEFAULT_ROOTID -2 907 ufs.export.ex_root = DEFAULT_ROOTID; 908 ufs.export.ex_flags = 909 args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0; 910 } else if (strcmp(fstypename, "proc") == 0) { 911 fstype = "linprocfs"; 912 fsdata = NULL; 913 } else { 914 return (ENODEV); 915 } 916 917 fsflags = 0; 918 919 if ((args->rwflag & 0xffff0000) == 0xc0ed0000) { 920 /* 921 * Linux SYNC flag is not included; the closest equivalent 922 * FreeBSD has is !ASYNC, which is our default. 923 */ 924 if (args->rwflag & LINUX_MS_RDONLY) 925 fsflags |= MNT_RDONLY; 926 if (args->rwflag & LINUX_MS_NOSUID) 927 fsflags |= MNT_NOSUID; 928 if (args->rwflag & LINUX_MS_NODEV) 929 fsflags |= MNT_NODEV; 930 if (args->rwflag & LINUX_MS_NOEXEC) 931 fsflags |= MNT_NOEXEC; 932 if (args->rwflag & LINUX_MS_REMOUNT) 933 fsflags |= MNT_UPDATE; 934 } 935 936 return (vfs_mount(p, fstype, mntonname, fsflags, fsdata)); 937} 938 939int 940linux_umount(struct proc *p, struct linux_umount_args *args) 941{ 942 struct linux_umount2_args args2; 943 944 args2.path = args->path; 945 args2.flags = 0; 946 return (linux_umount2(p, &args2)); 947} 948 949int 950linux_umount2(struct proc *p, struct linux_umount2_args *args) 951{ 952 struct unmount_args bsd; 953 954 bsd.path = args->path; 955 bsd.flags = args->flags; /* XXX correct? */ 956 return (unmount(p, &bsd)); 957} 958