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: releng/10.3/sbin/mount_msdosfs/mount_msdosfs.c 247856 2013-03-05 22:41:35Z jkim $"; 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; 72247856Sjkim int c, 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; 812892Sdfr 82247856Sjkim set_gid = set_uid = set_mask = set_dirmask = 0; 832892Sdfr 84152731Savatar while ((c = getopt(argc, argv, "sl9u:g:m:M:o:L:D:W:")) != -1) { 852892Sdfr switch (c) { 8633549Sjkh case 's': 87152362Srodrigc build_iovec(&iov, &iovlen, "shortnames", NULL, (size_t)-1); 8833549Sjkh break; 8933549Sjkh case 'l': 90152362Srodrigc build_iovec(&iov, &iovlen, "longnames", NULL, (size_t)-1); 9133549Sjkh break; 9233549Sjkh case '9': 93152731Savatar build_iovec_argf(&iov, &iovlen, "nowin95", "", (size_t)-1); 9433549Sjkh break; 952892Sdfr case 'u': 96152362Srodrigc uid = a_uid(optarg); 972892Sdfr set_uid = 1; 982892Sdfr break; 992892Sdfr case 'g': 100152362Srodrigc gid = a_gid(optarg); 1012892Sdfr set_gid = 1; 1022892Sdfr break; 1032892Sdfr case 'm': 104152362Srodrigc mask = a_mask(optarg); 1052892Sdfr set_mask = 1; 1062892Sdfr break; 107118837Strhodes case 'M': 108152362Srodrigc dirmask = a_mask(optarg); 109118837Strhodes set_dirmask = 1; 110118837Strhodes break; 111152362Srodrigc case 'L': { 112152362Srodrigc const char *quirk = NULL; 113120492Sfjoe if (setlocale(LC_CTYPE, optarg) == NULL) 114120492Sfjoe err(EX_CONFIG, "%s", optarg); 115120492Sfjoe csp = strchr(optarg,'.'); 116120492Sfjoe if (!csp) 117120492Sfjoe err(EX_CONFIG, "%s", optarg); 118152362Srodrigc quirk = kiconv_quirkcs(csp + 1, KICONV_VENDOR_MICSFT); 119152362Srodrigc build_iovec_argf(&iov, &iovlen, "cs_local", quirk); 120152974Savatar cs_local = strdup(quirk); 121152362Srodrigc } 12233761Sache break; 123120492Sfjoe case 'D': 124152362Srodrigc cs_dos = strdup(optarg); 125152362Srodrigc build_iovec_argf(&iov, &iovlen, "cs_dos", cs_dos, (size_t)-1); 12633749Sache break; 127152362Srodrigc case 'o': { 128152362Srodrigc char *p = NULL; 129152362Srodrigc char *val = strdup(""); 130152416Smaxim p = strchr(optarg, '='); 131152416Smaxim if (p != NULL) { 132152362Srodrigc free(val); 133152362Srodrigc *p = '\0'; 134152362Srodrigc val = p + 1; 135152362Srodrigc } 136152362Srodrigc build_iovec(&iov, &iovlen, optarg, val, (size_t)-1); 137152362Srodrigc } 1382892Sdfr break; 139120492Sfjoe case 'W': 140120492Sfjoe if (strcmp(optarg, "iso22dos") == 0) { 141152362Srodrigc cs_local = strdup("ISO8859-2"); 142152362Srodrigc cs_dos = strdup("CP852"); 143120492Sfjoe } else if (strcmp(optarg, "iso72dos") == 0) { 144152362Srodrigc cs_local = strdup("ISO8859-7"); 145152362Srodrigc cs_dos = strdup("CP737"); 146120492Sfjoe } else if (strcmp(optarg, "koi2dos") == 0) { 147152362Srodrigc cs_local = strdup("KOI8-R"); 148152362Srodrigc cs_dos = strdup("CP866"); 149120492Sfjoe } else if (strcmp(optarg, "koi8u2dos") == 0) { 150152362Srodrigc cs_local = strdup("KOI8-U"); 151152362Srodrigc cs_dos = strdup("CP866"); 152120492Sfjoe } else { 153120492Sfjoe err(EX_NOINPUT, "%s", optarg); 154120492Sfjoe } 155152362Srodrigc build_iovec(&iov, &iovlen, "cs_local", cs_local, (size_t)-1); 156152362Srodrigc build_iovec(&iov, &iovlen, "cs_dos", cs_dos, (size_t)-1); 157120492Sfjoe break; 1582892Sdfr case '?': 1592892Sdfr default: 1602892Sdfr usage(); 1612892Sdfr break; 1622892Sdfr } 1632892Sdfr } 1642892Sdfr 1652892Sdfr if (optind + 2 != argc) 1662892Sdfr usage(); 1672892Sdfr 168118837Strhodes if (set_mask && !set_dirmask) { 169152362Srodrigc dirmask = mask; 170118837Strhodes set_dirmask = 1; 171118837Strhodes } 172118837Strhodes else if (set_dirmask && !set_mask) { 173152362Srodrigc mask = dirmask; 174118837Strhodes set_mask = 1; 175118837Strhodes } 176118837Strhodes 1772892Sdfr dev = argv[optind]; 1782892Sdfr dir = argv[optind + 1]; 1792892Sdfr 180152362Srodrigc if (cs_local != NULL) { 181152809Savatar if (set_charset(&iov, &iovlen, cs_local, cs_dos) == -1) 182120492Sfjoe err(EX_OSERR, "msdosfs_iconv"); 183152362Srodrigc build_iovec_argf(&iov, &iovlen, "kiconv", ""); 184152362Srodrigc } else if (cs_dos != NULL) { 185152362Srodrigc build_iovec_argf(&iov, &iovlen, "cs_local", "ISO8859-1"); 186152809Savatar if (set_charset(&iov, &iovlen, "ISO8859-1", cs_dos) == -1) 187120492Sfjoe err(EX_OSERR, "msdosfs_iconv"); 188152362Srodrigc build_iovec_argf(&iov, &iovlen, "kiconv", ""); 189120492Sfjoe } 190120492Sfjoe 19152055Sphk /* 19252055Sphk * Resolve the mountpoint with realpath(3) and remove unnecessary 19352055Sphk * slashes from the devicename if there are any. 19452055Sphk */ 195230226Sjh if (checkpath(dir, mntpath) != 0) 196230226Sjh err(EX_USAGE, "%s", 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 221247856Sjkim if (nmount(iov, iovlen, 0) < 0) { 222185422Simp if (errmsg[0]) 223185422Simp err(1, "%s: %s", dev, errmsg); 224185422Simp else 225185422Simp err(1, "%s", dev); 226185422Simp } 227152362Srodrigc 2282892Sdfr exit (0); 2292892Sdfr} 2302892Sdfr 2312892Sdfrgid_t 232201227Seda_gid(char *s) 2332892Sdfr{ 2342892Sdfr struct group *gr; 2352892Sdfr char *gname; 2362892Sdfr gid_t gid; 2372892Sdfr 2382892Sdfr if ((gr = getgrnam(s)) != NULL) 2392892Sdfr gid = gr->gr_gid; 2402892Sdfr else { 2412892Sdfr for (gname = s; *s && isdigit(*s); ++s); 2422892Sdfr if (!*s) 2432892Sdfr gid = atoi(gname); 2442892Sdfr else 24515771Swollman errx(EX_NOUSER, "unknown group id: %s", gname); 2462892Sdfr } 2472892Sdfr return (gid); 2482892Sdfr} 2492892Sdfr 2502892Sdfruid_t 251201227Seda_uid(char *s) 2522892Sdfr{ 2532892Sdfr struct passwd *pw; 2542892Sdfr char *uname; 2552892Sdfr uid_t uid; 2562892Sdfr 2572892Sdfr if ((pw = getpwnam(s)) != NULL) 2582892Sdfr uid = pw->pw_uid; 2592892Sdfr else { 2602892Sdfr for (uname = s; *s && isdigit(*s); ++s); 2612892Sdfr if (!*s) 2622892Sdfr uid = atoi(uname); 2632892Sdfr else 26415771Swollman errx(EX_NOUSER, "unknown user id: %s", uname); 2652892Sdfr } 2662892Sdfr return (uid); 2672892Sdfr} 2682892Sdfr 2692892Sdfrmode_t 270201227Seda_mask(char *s) 2712892Sdfr{ 2722892Sdfr int done, rv; 2732892Sdfr char *ep; 2742892Sdfr 2752892Sdfr done = 0; 27633549Sjkh rv = -1; 2772892Sdfr if (*s >= '0' && *s <= '7') { 2782892Sdfr done = 1; 2792892Sdfr rv = strtol(optarg, &ep, 8); 2802892Sdfr } 2812892Sdfr if (!done || rv < 0 || *ep) 28215771Swollman errx(EX_USAGE, "invalid file mode: %s", s); 2832892Sdfr return (rv); 2842892Sdfr} 2852892Sdfr 2862892Sdfrvoid 287201227Sedusage(void) 2882892Sdfr{ 289121007Sfjoe fprintf(stderr, "%s\n%s\n%s\n", 290121429Strhodes "usage: mount_msdosfs [-9ls] [-D DOS_codepage] [-g gid] [-L locale]", 291121429Strhodes " [-M mask] [-m mask] [-o options] [-u uid]", 292121429Strhodes " [-W table] special node"); 29315771Swollman exit(EX_USAGE); 2942892Sdfr} 29533749Sache 296120492Sfjoeint 297152809Savatarset_charset(struct iovec **iov, int *iovlen, const char *cs_local, const char *cs_dos) 29833749Sache{ 299120492Sfjoe int error; 30033749Sache 301120492Sfjoe if (modfind("msdosfs_iconv") < 0) 302120492Sfjoe if (kldload("msdosfs_iconv") < 0 || modfind("msdosfs_iconv") < 0) { 303134565Strhodes warnx("cannot find or load \"msdosfs_iconv\" kernel module"); 304120492Sfjoe return (-1); 305120492Sfjoe } 306120492Sfjoe 307152809Savatar build_iovec_argf(iov, iovlen, "cs_win", ENCODING_UNICODE); 308152362Srodrigc error = kiconv_add_xlat16_cspairs(ENCODING_UNICODE, cs_local); 309120492Sfjoe if (error) 310120492Sfjoe return (-1); 311152362Srodrigc if (cs_dos != NULL) { 312152362Srodrigc error = kiconv_add_xlat16_cspairs(cs_dos, cs_local); 313120492Sfjoe if (error) 314120492Sfjoe return (-1); 315120492Sfjoe } else { 316152809Savatar build_iovec_argf(iov, iovlen, "cs_dos", cs_local); 317152362Srodrigc error = kiconv_add_xlat16_cspair(cs_local, cs_local, 318120492Sfjoe KICONV_FROM_UPPER | KICONV_LOWER); 319120492Sfjoe if (error) 320120492Sfjoe return (-1); 32133749Sache } 32233761Sache 323120492Sfjoe return (0); 32433761Sache} 325