mount_msdosfs.c revision 166326
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[] = 3550476Speter "$FreeBSD: head/sbin/mount_msdosfs/mount_msdosfs.c 166326 2007-01-29 01:49:08Z rodrigc $"; 362892Sdfr#endif /* not lint */ 372892Sdfr 382892Sdfr#include <sys/param.h> 392892Sdfr#include <sys/mount.h> 402892Sdfr#include <sys/stat.h> 41120492Sfjoe#include <sys/iconv.h> 42121363Strhodes#include <sys/linker.h> 43121429Strhodes#include <sys/module.h> 4423335Sbde 452892Sdfr#include <ctype.h> 462892Sdfr#include <err.h> 472892Sdfr#include <grp.h> 4833761Sache#include <locale.h> 492892Sdfr#include <pwd.h> 502892Sdfr#include <stdio.h> 5155613Sache/* must be after stdio to declare fparseln */ 5255613Sache#include <libutil.h> 532892Sdfr#include <stdlib.h> 542892Sdfr#include <string.h> 5515771Swollman#include <sysexits.h> 562892Sdfr#include <unistd.h> 57121429Strhodes 582892Sdfr#include "mntopts.h" 592892Sdfr 6092882Simpstatic gid_t a_gid(char *); 6192882Simpstatic uid_t a_uid(char *); 6292882Simpstatic mode_t a_mask(char *); 6392882Simpstatic void usage(void) __dead2; 64152809Savatarstatic int set_charset(struct iovec **iov, int *iovlen, const char *, const char *); 652892Sdfr 662892Sdfrint 67121373Strhodesmain(int argc, char **argv) 682892Sdfr{ 69152416Smaxim struct iovec *iov = NULL; 70152416Smaxim int iovlen = 0; 712892Sdfr struct stat sb; 72118837Strhodes int c, mntflags, set_gid, set_uid, set_mask, set_dirmask; 73120492Sfjoe char *dev, *dir, mntpath[MAXPATHLEN], *csp; 74152362Srodrigc char fstype[] = "msdosfs"; 75166326Srodrigc char errmsg[255] = {0}; 76152362Srodrigc char *cs_dos = NULL; 77152362Srodrigc char *cs_local = NULL; 78152362Srodrigc mode_t mask = 0, dirmask = 0; 79152362Srodrigc uid_t uid = 0; 80152362Srodrigc gid_t gid = 0; 81152362Srodrigc getmnt_silent = 1; 822892Sdfr 83118837Strhodes mntflags = set_gid = set_uid = set_mask = set_dirmask = 0; 842892Sdfr 85152731Savatar while ((c = getopt(argc, argv, "sl9u:g:m:M:o:L:D:W:")) != -1) { 862892Sdfr switch (c) { 8733549Sjkh case 's': 88152362Srodrigc build_iovec(&iov, &iovlen, "shortnames", NULL, (size_t)-1); 8933549Sjkh break; 9033549Sjkh case 'l': 91152362Srodrigc build_iovec(&iov, &iovlen, "longnames", NULL, (size_t)-1); 9233549Sjkh break; 9333549Sjkh case '9': 94152731Savatar build_iovec_argf(&iov, &iovlen, "nowin95", "", (size_t)-1); 9533549Sjkh break; 962892Sdfr case 'u': 97152362Srodrigc uid = a_uid(optarg); 982892Sdfr set_uid = 1; 992892Sdfr break; 1002892Sdfr case 'g': 101152362Srodrigc gid = a_gid(optarg); 1022892Sdfr set_gid = 1; 1032892Sdfr break; 1042892Sdfr case 'm': 105152362Srodrigc mask = a_mask(optarg); 1062892Sdfr set_mask = 1; 1072892Sdfr break; 108118837Strhodes case 'M': 109152362Srodrigc dirmask = a_mask(optarg); 110118837Strhodes set_dirmask = 1; 111118837Strhodes break; 112152362Srodrigc case 'L': { 113152362Srodrigc const char *quirk = NULL; 114120492Sfjoe if (setlocale(LC_CTYPE, optarg) == NULL) 115120492Sfjoe err(EX_CONFIG, "%s", optarg); 116120492Sfjoe csp = strchr(optarg,'.'); 117120492Sfjoe if (!csp) 118120492Sfjoe err(EX_CONFIG, "%s", optarg); 119152362Srodrigc quirk = kiconv_quirkcs(csp + 1, KICONV_VENDOR_MICSFT); 120152362Srodrigc build_iovec_argf(&iov, &iovlen, "cs_local", quirk); 121152974Savatar cs_local = strdup(quirk); 122152362Srodrigc } 12333761Sache break; 124120492Sfjoe case 'D': 125152362Srodrigc cs_dos = strdup(optarg); 126152362Srodrigc build_iovec_argf(&iov, &iovlen, "cs_dos", cs_dos, (size_t)-1); 12733749Sache break; 128152362Srodrigc case 'o': { 129152362Srodrigc char *p = NULL; 130152362Srodrigc char *val = strdup(""); 131152416Smaxim p = strchr(optarg, '='); 132152416Smaxim if (p != NULL) { 133152362Srodrigc free(val); 134152362Srodrigc *p = '\0'; 135152362Srodrigc val = p + 1; 136152362Srodrigc } 137152362Srodrigc build_iovec(&iov, &iovlen, optarg, val, (size_t)-1); 138152362Srodrigc } 1392892Sdfr break; 140120492Sfjoe case 'W': 141120492Sfjoe if (strcmp(optarg, "iso22dos") == 0) { 142152362Srodrigc cs_local = strdup("ISO8859-2"); 143152362Srodrigc cs_dos = strdup("CP852"); 144120492Sfjoe } else if (strcmp(optarg, "iso72dos") == 0) { 145152362Srodrigc cs_local = strdup("ISO8859-7"); 146152362Srodrigc cs_dos = strdup("CP737"); 147120492Sfjoe } else if (strcmp(optarg, "koi2dos") == 0) { 148152362Srodrigc cs_local = strdup("KOI8-R"); 149152362Srodrigc cs_dos = strdup("CP866"); 150120492Sfjoe } else if (strcmp(optarg, "koi8u2dos") == 0) { 151152362Srodrigc cs_local = strdup("KOI8-U"); 152152362Srodrigc cs_dos = strdup("CP866"); 153120492Sfjoe } else { 154120492Sfjoe err(EX_NOINPUT, "%s", optarg); 155120492Sfjoe } 156152362Srodrigc build_iovec(&iov, &iovlen, "cs_local", cs_local, (size_t)-1); 157152362Srodrigc build_iovec(&iov, &iovlen, "cs_dos", cs_dos, (size_t)-1); 158120492Sfjoe break; 1592892Sdfr case '?': 1602892Sdfr default: 1612892Sdfr usage(); 1622892Sdfr break; 1632892Sdfr } 1642892Sdfr } 1652892Sdfr 1662892Sdfr if (optind + 2 != argc) 1672892Sdfr usage(); 1682892Sdfr 169118837Strhodes if (set_mask && !set_dirmask) { 170152362Srodrigc dirmask = mask; 171118837Strhodes set_dirmask = 1; 172118837Strhodes } 173118837Strhodes else if (set_dirmask && !set_mask) { 174152362Srodrigc mask = dirmask; 175118837Strhodes set_mask = 1; 176118837Strhodes } 177118837Strhodes 1782892Sdfr dev = argv[optind]; 1792892Sdfr dir = argv[optind + 1]; 1802892Sdfr 181152362Srodrigc if (cs_local != NULL) { 182152809Savatar if (set_charset(&iov, &iovlen, cs_local, cs_dos) == -1) 183120492Sfjoe err(EX_OSERR, "msdosfs_iconv"); 184152362Srodrigc build_iovec_argf(&iov, &iovlen, "kiconv", ""); 185152362Srodrigc } else if (cs_dos != NULL) { 186152362Srodrigc build_iovec_argf(&iov, &iovlen, "cs_local", "ISO8859-1"); 187152809Savatar if (set_charset(&iov, &iovlen, "ISO8859-1", cs_dos) == -1) 188120492Sfjoe err(EX_OSERR, "msdosfs_iconv"); 189152362Srodrigc build_iovec_argf(&iov, &iovlen, "kiconv", ""); 190120492Sfjoe } 191120492Sfjoe 19252055Sphk /* 19352055Sphk * Resolve the mountpoint with realpath(3) and remove unnecessary 19452055Sphk * slashes from the devicename if there are any. 19552055Sphk */ 19652055Sphk (void)checkpath(dir, mntpath); 19752055Sphk (void)rmslashes(dev, dev); 19852055Sphk 1992892Sdfr if (!set_gid || !set_uid || !set_mask) { 20052055Sphk if (stat(mntpath, &sb) == -1) 20152055Sphk err(EX_OSERR, "stat %s", mntpath); 2022892Sdfr 2032892Sdfr if (!set_uid) 204152362Srodrigc uid = sb.st_uid; 2052892Sdfr if (!set_gid) 206152362Srodrigc gid = sb.st_gid; 2072892Sdfr if (!set_mask) 208152362Srodrigc mask = dirmask = 209118837Strhodes sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 2102892Sdfr } 2112892Sdfr 212152362Srodrigc build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1); 213152362Srodrigc build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1); 214152362Srodrigc build_iovec(&iov, &iovlen, "from", dev, (size_t)-1); 215166326Srodrigc build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg)); 216152362Srodrigc build_iovec_argf(&iov, &iovlen, "uid", "%d", uid); 217152362Srodrigc build_iovec_argf(&iov, &iovlen, "gid", "%u", gid); 218152362Srodrigc build_iovec_argf(&iov, &iovlen, "mask", "%u", mask); 219152362Srodrigc build_iovec_argf(&iov, &iovlen, "dirmask", "%u", dirmask); 2202892Sdfr 221152362Srodrigc if (nmount(iov, iovlen, mntflags) < 0) 222166326Srodrigc err(1, "%s: %s", dev, errmsg); 223152362Srodrigc 2242892Sdfr exit (0); 2252892Sdfr} 2262892Sdfr 2272892Sdfrgid_t 2282892Sdfra_gid(s) 2292892Sdfr char *s; 2302892Sdfr{ 2312892Sdfr struct group *gr; 2322892Sdfr char *gname; 2332892Sdfr gid_t gid; 2342892Sdfr 2352892Sdfr if ((gr = getgrnam(s)) != NULL) 2362892Sdfr gid = gr->gr_gid; 2372892Sdfr else { 2382892Sdfr for (gname = s; *s && isdigit(*s); ++s); 2392892Sdfr if (!*s) 2402892Sdfr gid = atoi(gname); 2412892Sdfr else 24215771Swollman errx(EX_NOUSER, "unknown group id: %s", gname); 2432892Sdfr } 2442892Sdfr return (gid); 2452892Sdfr} 2462892Sdfr 2472892Sdfruid_t 2482892Sdfra_uid(s) 2492892Sdfr char *s; 2502892Sdfr{ 2512892Sdfr struct passwd *pw; 2522892Sdfr char *uname; 2532892Sdfr uid_t uid; 2542892Sdfr 2552892Sdfr if ((pw = getpwnam(s)) != NULL) 2562892Sdfr uid = pw->pw_uid; 2572892Sdfr else { 2582892Sdfr for (uname = s; *s && isdigit(*s); ++s); 2592892Sdfr if (!*s) 2602892Sdfr uid = atoi(uname); 2612892Sdfr else 26215771Swollman errx(EX_NOUSER, "unknown user id: %s", uname); 2632892Sdfr } 2642892Sdfr return (uid); 2652892Sdfr} 2662892Sdfr 2672892Sdfrmode_t 2682892Sdfra_mask(s) 2692892Sdfr char *s; 2702892Sdfr{ 2712892Sdfr int done, rv; 2722892Sdfr char *ep; 2732892Sdfr 2742892Sdfr done = 0; 27533549Sjkh rv = -1; 2762892Sdfr if (*s >= '0' && *s <= '7') { 2772892Sdfr done = 1; 2782892Sdfr rv = strtol(optarg, &ep, 8); 2792892Sdfr } 2802892Sdfr if (!done || rv < 0 || *ep) 28115771Swollman errx(EX_USAGE, "invalid file mode: %s", s); 2822892Sdfr return (rv); 2832892Sdfr} 2842892Sdfr 2852892Sdfrvoid 2862892Sdfrusage() 2872892Sdfr{ 288121007Sfjoe fprintf(stderr, "%s\n%s\n%s\n", 289121429Strhodes "usage: mount_msdosfs [-9ls] [-D DOS_codepage] [-g gid] [-L locale]", 290121429Strhodes " [-M mask] [-m mask] [-o options] [-u uid]", 291121429Strhodes " [-W table] special node"); 29215771Swollman exit(EX_USAGE); 2932892Sdfr} 29433749Sache 295120492Sfjoeint 296152809Savatarset_charset(struct iovec **iov, int *iovlen, const char *cs_local, const char *cs_dos) 29733749Sache{ 298120492Sfjoe int error; 29933749Sache 300120492Sfjoe if (modfind("msdosfs_iconv") < 0) 301120492Sfjoe if (kldload("msdosfs_iconv") < 0 || modfind("msdosfs_iconv") < 0) { 302134565Strhodes warnx("cannot find or load \"msdosfs_iconv\" kernel module"); 303120492Sfjoe return (-1); 304120492Sfjoe } 305120492Sfjoe 306152809Savatar build_iovec_argf(iov, iovlen, "cs_win", ENCODING_UNICODE); 307152362Srodrigc error = kiconv_add_xlat16_cspairs(ENCODING_UNICODE, cs_local); 308120492Sfjoe if (error) 309120492Sfjoe return (-1); 310152362Srodrigc if (cs_dos != NULL) { 311152362Srodrigc error = kiconv_add_xlat16_cspairs(cs_dos, cs_local); 312120492Sfjoe if (error) 313120492Sfjoe return (-1); 314120492Sfjoe } else { 315152809Savatar build_iovec_argf(iov, iovlen, "cs_dos", cs_local); 316152362Srodrigc error = kiconv_add_xlat16_cspair(cs_local, cs_local, 317120492Sfjoe KICONV_FROM_UPPER | KICONV_LOWER); 318120492Sfjoe if (error) 319120492Sfjoe return (-1); 32033749Sache } 32133761Sache 322120492Sfjoe return (0); 32333761Sache} 324