mount_msdosfs.c revision 33749
133549Sjkh/* $NetBSD: mount_msdos.c,v 1.18 1997/09/16 12:24:18 lukem Exp $ */ 233549Sjkh 32892Sdfr/* 42892Sdfr * Copyright (c) 1994 Christopher G. Demetriou 52892Sdfr * All rights reserved. 62892Sdfr * 72892Sdfr * Redistribution and use in source and binary forms, with or without 82892Sdfr * modification, are permitted provided that the following conditions 92892Sdfr * are met: 102892Sdfr * 1. Redistributions of source code must retain the above copyright 112892Sdfr * notice, this list of conditions and the following disclaimer. 122892Sdfr * 2. Redistributions in binary form must reproduce the above copyright 132892Sdfr * notice, this list of conditions and the following disclaimer in the 142892Sdfr * documentation and/or other materials provided with the distribution. 152892Sdfr * 3. All advertising materials mentioning features or use of this software 162892Sdfr * must display the following acknowledgement: 172892Sdfr * This product includes software developed by Christopher G. Demetriou. 182892Sdfr * 4. The name of the author may not be used to endorse or promote products 192892Sdfr * derived from this software without specific prior written permission 202892Sdfr * 212892Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 222892Sdfr * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 232892Sdfr * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 242892Sdfr * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 252892Sdfr * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 262892Sdfr * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 272892Sdfr * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 282892Sdfr * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 292892Sdfr * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 302892Sdfr * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 312892Sdfr */ 322892Sdfr 332892Sdfr#ifndef lint 3415771Swollmanstatic const char rcsid[] = 3533749Sache "$Id: mount_msdos.c,v 1.11 1998/02/18 09:30:31 jkh Exp $"; 362892Sdfr#endif /* not lint */ 372892Sdfr 382892Sdfr#include <sys/param.h> 392892Sdfr#include <sys/mount.h> 402892Sdfr#include <sys/stat.h> 4123335Sbde 4223335Sbde#include <msdosfs/msdosfsmount.h> 4323335Sbde 442892Sdfr#include <ctype.h> 452892Sdfr#include <err.h> 462892Sdfr#include <grp.h> 472892Sdfr#include <pwd.h> 482892Sdfr#include <stdio.h> 492892Sdfr#include <stdlib.h> 502892Sdfr#include <string.h> 5115771Swollman#include <sysexits.h> 522892Sdfr#include <unistd.h> 532892Sdfr 542892Sdfr#include "mntopts.h" 552892Sdfr 5615771Swollmanstatic struct mntopt mopts[] = { 572892Sdfr MOPT_STDOPTS, 5828731Sbde MOPT_FORCE, 5928731Sbde MOPT_SYNC, 6028731Sbde MOPT_UPDATE, 612892Sdfr { NULL } 622892Sdfr}; 632892Sdfr 6415771Swollmanstatic gid_t a_gid __P((char *)); 6515771Swollmanstatic uid_t a_uid __P((char *)); 6615771Swollmanstatic mode_t a_mask __P((char *)); 6718286Sbdestatic void usage __P((void)) __dead2; 6833749Sachestatic void load_u2wtable __P((u_int16_t *, char *)); 692892Sdfr 702892Sdfrint 712892Sdfrmain(argc, argv) 722892Sdfr int argc; 732892Sdfr char **argv; 742892Sdfr{ 752892Sdfr struct msdosfs_args args; 762892Sdfr struct stat sb; 7723335Sbde int c, error, mntflags, set_gid, set_uid, set_mask; 782892Sdfr char *dev, *dir, ndir[MAXPATHLEN+1]; 7923335Sbde struct vfsconf vfc; 802892Sdfr 812892Sdfr mntflags = set_gid = set_uid = set_mask = 0; 822892Sdfr (void)memset(&args, '\0', sizeof(args)); 8333549Sjkh args.magic = MSDOSFS_ARGSMAGIC; 842892Sdfr 8533749Sache while ((c = getopt(argc, argv, "sl9u:g:m:o:w:")) != -1) { 862892Sdfr switch (c) { 8733549Sjkh#ifdef MSDOSFSMNT_GEMDOSFS 8833549Sjkh case 'G': 8933549Sjkh args.flags |= MSDOSFSMNT_GEMDOSFS; 9033549Sjkh break; 9133549Sjkh#endif 9233549Sjkh case 's': 9333549Sjkh args.flags |= MSDOSFSMNT_SHORTNAME; 9433549Sjkh break; 9533549Sjkh case 'l': 9633549Sjkh args.flags |= MSDOSFSMNT_LONGNAME; 9733549Sjkh break; 9833549Sjkh case '9': 9933549Sjkh args.flags |= MSDOSFSMNT_NOWIN95; 10033549Sjkh break; 1012892Sdfr case 'u': 1022892Sdfr args.uid = a_uid(optarg); 1032892Sdfr set_uid = 1; 1042892Sdfr break; 1052892Sdfr case 'g': 1062892Sdfr args.gid = a_gid(optarg); 1072892Sdfr set_gid = 1; 1082892Sdfr break; 1092892Sdfr case 'm': 1102892Sdfr args.mask = a_mask(optarg); 1112892Sdfr set_mask = 1; 1122892Sdfr break; 11333749Sache case 'w': 11433749Sache load_u2wtable(args.u2w, optarg); 11533749Sache args.flags |= MSDOSFSMNT_U2WTABLE; 11633749Sache break; 1172892Sdfr case 'o': 1184065Swollman getmntopts(optarg, mopts, &mntflags, 0); 1192892Sdfr break; 1202892Sdfr case '?': 1212892Sdfr default: 1222892Sdfr usage(); 1232892Sdfr break; 1242892Sdfr } 1252892Sdfr } 1262892Sdfr 1272892Sdfr if (optind + 2 != argc) 1282892Sdfr usage(); 1292892Sdfr 1302892Sdfr dev = argv[optind]; 1312892Sdfr dir = argv[optind + 1]; 1322892Sdfr if (dir[0] != '/') { 13315771Swollman warnx("\"%s\" is a relative path", dir); 1342892Sdfr if (getcwd(ndir, sizeof(ndir)) == NULL) 13515771Swollman err(EX_OSERR, "getcwd"); 1362892Sdfr strncat(ndir, "/", sizeof(ndir) - strlen(ndir) - 1); 1372892Sdfr strncat(ndir, dir, sizeof(ndir) - strlen(ndir) - 1); 1382892Sdfr dir = ndir; 13915771Swollman warnx("using \"%s\" instead", dir); 1402892Sdfr } 1412892Sdfr 1422892Sdfr args.fspec = dev; 1432892Sdfr args.export.ex_root = -2; /* unchecked anyway on DOS fs */ 1442892Sdfr if (mntflags & MNT_RDONLY) 1452892Sdfr args.export.ex_flags = MNT_EXRDONLY; 1462892Sdfr else 1472892Sdfr args.export.ex_flags = 0; 1482892Sdfr if (!set_gid || !set_uid || !set_mask) { 1492892Sdfr if (stat(dir, &sb) == -1) 15015771Swollman err(EX_OSERR, "stat %s", dir); 1512892Sdfr 1522892Sdfr if (!set_uid) 1532892Sdfr args.uid = sb.st_uid; 1542892Sdfr if (!set_gid) 1552892Sdfr args.gid = sb.st_gid; 1562892Sdfr if (!set_mask) 1572892Sdfr args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 1582892Sdfr } 1592892Sdfr 16023335Sbde error = getvfsbyname("msdos", &vfc); 16123335Sbde if (error && vfsisloadable("msdos")) { 16223335Sbde if (vfsload("msdos")) 16315771Swollman err(EX_OSERR, "vfsload(msdos)"); 1642999Swollman endvfsent(); /* clear cache */ 16523335Sbde error = getvfsbyname("msdos", &vfc); 1662999Swollman } 16723335Sbde if (error) 16815771Swollman errx(EX_OSERR, "msdos filesystem is not available"); 1692999Swollman 17023335Sbde if (mount(vfc.vfc_name, dir, mntflags, &args) < 0) 17115771Swollman err(EX_OSERR, "%s", dev); 1722892Sdfr 1732892Sdfr exit (0); 1742892Sdfr} 1752892Sdfr 1762892Sdfrgid_t 1772892Sdfra_gid(s) 1782892Sdfr char *s; 1792892Sdfr{ 1802892Sdfr struct group *gr; 1812892Sdfr char *gname; 1822892Sdfr gid_t gid; 1832892Sdfr 1842892Sdfr if ((gr = getgrnam(s)) != NULL) 1852892Sdfr gid = gr->gr_gid; 1862892Sdfr else { 1872892Sdfr for (gname = s; *s && isdigit(*s); ++s); 1882892Sdfr if (!*s) 1892892Sdfr gid = atoi(gname); 1902892Sdfr else 19115771Swollman errx(EX_NOUSER, "unknown group id: %s", gname); 1922892Sdfr } 1932892Sdfr return (gid); 1942892Sdfr} 1952892Sdfr 1962892Sdfruid_t 1972892Sdfra_uid(s) 1982892Sdfr char *s; 1992892Sdfr{ 2002892Sdfr struct passwd *pw; 2012892Sdfr char *uname; 2022892Sdfr uid_t uid; 2032892Sdfr 2042892Sdfr if ((pw = getpwnam(s)) != NULL) 2052892Sdfr uid = pw->pw_uid; 2062892Sdfr else { 2072892Sdfr for (uname = s; *s && isdigit(*s); ++s); 2082892Sdfr if (!*s) 2092892Sdfr uid = atoi(uname); 2102892Sdfr else 21115771Swollman errx(EX_NOUSER, "unknown user id: %s", uname); 2122892Sdfr } 2132892Sdfr return (uid); 2142892Sdfr} 2152892Sdfr 2162892Sdfrmode_t 2172892Sdfra_mask(s) 2182892Sdfr char *s; 2192892Sdfr{ 2202892Sdfr int done, rv; 2212892Sdfr char *ep; 2222892Sdfr 2232892Sdfr done = 0; 22433549Sjkh rv = -1; 2252892Sdfr if (*s >= '0' && *s <= '7') { 2262892Sdfr done = 1; 2272892Sdfr rv = strtol(optarg, &ep, 8); 2282892Sdfr } 2292892Sdfr if (!done || rv < 0 || *ep) 23015771Swollman errx(EX_USAGE, "invalid file mode: %s", s); 2312892Sdfr return (rv); 2322892Sdfr} 2332892Sdfr 2342892Sdfrvoid 2352892Sdfrusage() 2362892Sdfr{ 23733749Sache fprintf(stderr, "usage: mount_msdos [-o options] [-u user] [-g group] [-m mask] [-s] [-l] [-9] [-w table] bdev dir\n"); 23815771Swollman exit(EX_USAGE); 2392892Sdfr} 24033749Sache 24133749Sachevoid 24233749Sacheload_u2wtable (table, name) 24333749Sache u_int16_t *table; 24433749Sache char *name; 24533749Sache{ 24633749Sache FILE *f; 24733749Sache int i, code; 24833749Sache char buf[128]; 24933749Sache char *fn; 25033749Sache 25133749Sache if (*name == '/') 25233749Sache fn = name; 25333749Sache else { 25433749Sache snprintf(buf, sizeof(buf), "/usr/libdata/msdosfs/%s", name); 25533749Sache buf[127] = '\0'; 25633749Sache fn = buf; 25733749Sache } 25833749Sache if ((f = fopen(fn, "r")) == NULL) 25933749Sache err(EX_NOINPUT, "%s", fn); 26033749Sache for (i = 0; i < 128; i++) { 26133749Sache if (fscanf(f, "%i", &code) != 1) 26233749Sache errx(EX_DATAERR, "missing item number %d", i); 26333749Sache table[i] = code; 26433749Sache } 26533749Sache fclose(f); 26633749Sache} 267