mount_msdosfs.c revision 33761
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[] = 3533761Sache "$Id: mount_msdos.c,v 1.12 1998/02/22 15:28:06 ache 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> 4733761Sache#include <locale.h> 482892Sdfr#include <pwd.h> 492892Sdfr#include <stdio.h> 502892Sdfr#include <stdlib.h> 512892Sdfr#include <string.h> 5215771Swollman#include <sysexits.h> 532892Sdfr#include <unistd.h> 542892Sdfr 552892Sdfr#include "mntopts.h" 562892Sdfr 5715771Swollmanstatic struct mntopt mopts[] = { 582892Sdfr MOPT_STDOPTS, 5928731Sbde MOPT_FORCE, 6028731Sbde MOPT_SYNC, 6128731Sbde MOPT_UPDATE, 622892Sdfr { NULL } 632892Sdfr}; 642892Sdfr 6515771Swollmanstatic gid_t a_gid __P((char *)); 6615771Swollmanstatic uid_t a_uid __P((char *)); 6715771Swollmanstatic mode_t a_mask __P((char *)); 6818286Sbdestatic void usage __P((void)) __dead2; 6933749Sachestatic void load_u2wtable __P((u_int16_t *, char *)); 7033761Sachestatic void load_ultable __P((u_int8_t *, char *)); 712892Sdfr 722892Sdfrint 732892Sdfrmain(argc, argv) 742892Sdfr int argc; 752892Sdfr char **argv; 762892Sdfr{ 772892Sdfr struct msdosfs_args args; 782892Sdfr struct stat sb; 7923335Sbde int c, error, mntflags, set_gid, set_uid, set_mask; 802892Sdfr char *dev, *dir, ndir[MAXPATHLEN+1]; 8123335Sbde struct vfsconf vfc; 822892Sdfr 832892Sdfr mntflags = set_gid = set_uid = set_mask = 0; 842892Sdfr (void)memset(&args, '\0', sizeof(args)); 8533549Sjkh args.magic = MSDOSFS_ARGSMAGIC; 862892Sdfr 8733761Sache while ((c = getopt(argc, argv, "sl9u:g:m:o:L:W:")) != -1) { 882892Sdfr switch (c) { 8933549Sjkh#ifdef MSDOSFSMNT_GEMDOSFS 9033549Sjkh case 'G': 9133549Sjkh args.flags |= MSDOSFSMNT_GEMDOSFS; 9233549Sjkh break; 9333549Sjkh#endif 9433549Sjkh case 's': 9533549Sjkh args.flags |= MSDOSFSMNT_SHORTNAME; 9633549Sjkh break; 9733549Sjkh case 'l': 9833549Sjkh args.flags |= MSDOSFSMNT_LONGNAME; 9933549Sjkh break; 10033549Sjkh case '9': 10133549Sjkh args.flags |= MSDOSFSMNT_NOWIN95; 10233549Sjkh break; 1032892Sdfr case 'u': 1042892Sdfr args.uid = a_uid(optarg); 1052892Sdfr set_uid = 1; 1062892Sdfr break; 1072892Sdfr case 'g': 1082892Sdfr args.gid = a_gid(optarg); 1092892Sdfr set_gid = 1; 1102892Sdfr break; 1112892Sdfr case 'm': 1122892Sdfr args.mask = a_mask(optarg); 1132892Sdfr set_mask = 1; 1142892Sdfr break; 11533761Sache case 'L': 11633761Sache load_ultable(args.ul, optarg); 11733761Sache args.flags |= MSDOSFSMNT_ULTABLE; 11833761Sache break; 11933761Sache case 'W': 12033749Sache load_u2wtable(args.u2w, optarg); 12133749Sache args.flags |= MSDOSFSMNT_U2WTABLE; 12233749Sache break; 1232892Sdfr case 'o': 1244065Swollman getmntopts(optarg, mopts, &mntflags, 0); 1252892Sdfr break; 1262892Sdfr case '?': 1272892Sdfr default: 1282892Sdfr usage(); 1292892Sdfr break; 1302892Sdfr } 1312892Sdfr } 1322892Sdfr 1332892Sdfr if (optind + 2 != argc) 1342892Sdfr usage(); 1352892Sdfr 1362892Sdfr dev = argv[optind]; 1372892Sdfr dir = argv[optind + 1]; 1382892Sdfr if (dir[0] != '/') { 13915771Swollman warnx("\"%s\" is a relative path", dir); 1402892Sdfr if (getcwd(ndir, sizeof(ndir)) == NULL) 14115771Swollman err(EX_OSERR, "getcwd"); 1422892Sdfr strncat(ndir, "/", sizeof(ndir) - strlen(ndir) - 1); 1432892Sdfr strncat(ndir, dir, sizeof(ndir) - strlen(ndir) - 1); 1442892Sdfr dir = ndir; 14515771Swollman warnx("using \"%s\" instead", dir); 1462892Sdfr } 1472892Sdfr 1482892Sdfr args.fspec = dev; 1492892Sdfr args.export.ex_root = -2; /* unchecked anyway on DOS fs */ 1502892Sdfr if (mntflags & MNT_RDONLY) 1512892Sdfr args.export.ex_flags = MNT_EXRDONLY; 1522892Sdfr else 1532892Sdfr args.export.ex_flags = 0; 1542892Sdfr if (!set_gid || !set_uid || !set_mask) { 1552892Sdfr if (stat(dir, &sb) == -1) 15615771Swollman err(EX_OSERR, "stat %s", dir); 1572892Sdfr 1582892Sdfr if (!set_uid) 1592892Sdfr args.uid = sb.st_uid; 1602892Sdfr if (!set_gid) 1612892Sdfr args.gid = sb.st_gid; 1622892Sdfr if (!set_mask) 1632892Sdfr args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 1642892Sdfr } 1652892Sdfr 16623335Sbde error = getvfsbyname("msdos", &vfc); 16723335Sbde if (error && vfsisloadable("msdos")) { 16823335Sbde if (vfsload("msdos")) 16915771Swollman err(EX_OSERR, "vfsload(msdos)"); 1702999Swollman endvfsent(); /* clear cache */ 17123335Sbde error = getvfsbyname("msdos", &vfc); 1722999Swollman } 17323335Sbde if (error) 17415771Swollman errx(EX_OSERR, "msdos filesystem is not available"); 1752999Swollman 17623335Sbde if (mount(vfc.vfc_name, dir, mntflags, &args) < 0) 17715771Swollman err(EX_OSERR, "%s", dev); 1782892Sdfr 1792892Sdfr exit (0); 1802892Sdfr} 1812892Sdfr 1822892Sdfrgid_t 1832892Sdfra_gid(s) 1842892Sdfr char *s; 1852892Sdfr{ 1862892Sdfr struct group *gr; 1872892Sdfr char *gname; 1882892Sdfr gid_t gid; 1892892Sdfr 1902892Sdfr if ((gr = getgrnam(s)) != NULL) 1912892Sdfr gid = gr->gr_gid; 1922892Sdfr else { 1932892Sdfr for (gname = s; *s && isdigit(*s); ++s); 1942892Sdfr if (!*s) 1952892Sdfr gid = atoi(gname); 1962892Sdfr else 19715771Swollman errx(EX_NOUSER, "unknown group id: %s", gname); 1982892Sdfr } 1992892Sdfr return (gid); 2002892Sdfr} 2012892Sdfr 2022892Sdfruid_t 2032892Sdfra_uid(s) 2042892Sdfr char *s; 2052892Sdfr{ 2062892Sdfr struct passwd *pw; 2072892Sdfr char *uname; 2082892Sdfr uid_t uid; 2092892Sdfr 2102892Sdfr if ((pw = getpwnam(s)) != NULL) 2112892Sdfr uid = pw->pw_uid; 2122892Sdfr else { 2132892Sdfr for (uname = s; *s && isdigit(*s); ++s); 2142892Sdfr if (!*s) 2152892Sdfr uid = atoi(uname); 2162892Sdfr else 21715771Swollman errx(EX_NOUSER, "unknown user id: %s", uname); 2182892Sdfr } 2192892Sdfr return (uid); 2202892Sdfr} 2212892Sdfr 2222892Sdfrmode_t 2232892Sdfra_mask(s) 2242892Sdfr char *s; 2252892Sdfr{ 2262892Sdfr int done, rv; 2272892Sdfr char *ep; 2282892Sdfr 2292892Sdfr done = 0; 23033549Sjkh rv = -1; 2312892Sdfr if (*s >= '0' && *s <= '7') { 2322892Sdfr done = 1; 2332892Sdfr rv = strtol(optarg, &ep, 8); 2342892Sdfr } 2352892Sdfr if (!done || rv < 0 || *ep) 23615771Swollman errx(EX_USAGE, "invalid file mode: %s", s); 2372892Sdfr return (rv); 2382892Sdfr} 2392892Sdfr 2402892Sdfrvoid 2412892Sdfrusage() 2422892Sdfr{ 24333761Sache fprintf(stderr, "usage: mount_msdos [-o options] [-u user] [-g group] [-m mask] [-s] [-l] [-9] [-L locale] [-W table] bdev dir\n"); 24415771Swollman exit(EX_USAGE); 2452892Sdfr} 24633749Sache 24733749Sachevoid 24833749Sacheload_u2wtable (table, name) 24933749Sache u_int16_t *table; 25033749Sache char *name; 25133749Sache{ 25233749Sache FILE *f; 25333749Sache int i, code; 25433749Sache char buf[128]; 25533749Sache char *fn; 25633749Sache 25733749Sache if (*name == '/') 25833749Sache fn = name; 25933749Sache else { 26033749Sache snprintf(buf, sizeof(buf), "/usr/libdata/msdosfs/%s", name); 26133749Sache buf[127] = '\0'; 26233749Sache fn = buf; 26333749Sache } 26433749Sache if ((f = fopen(fn, "r")) == NULL) 26533749Sache err(EX_NOINPUT, "%s", fn); 26633749Sache for (i = 0; i < 128; i++) { 26733749Sache if (fscanf(f, "%i", &code) != 1) 26833749Sache errx(EX_DATAERR, "missing item number %d", i); 26933749Sache table[i] = code; 27033749Sache } 27133749Sache fclose(f); 27233749Sache} 27333761Sache 27433761Sachevoid 27533761Sacheload_ultable (table, name) 27633761Sache u_int8_t *table; 27733761Sache char *name; 27833761Sache{ 27933761Sache int i; 28033761Sache 28133761Sache if (setlocale(LC_CTYPE, name) == NULL) 28233761Sache err(EX_CONFIG, name); 28333761Sache for (i = 0; i < 128; i++) 28433761Sache table[i] = tolower(i | 0x80); 28533761Sache} 286