1 /* $NetBSD: mount_msdos.c,v 1.28 2003/05/03 15:37:08 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Christopher G. Demetriou 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed for the 18 * NetBSD Project. See http://www.NetBSD.org/ for 19 * information about NetBSD. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>> 35 */ 36 37 #include <sys/cdefs.h> 38 #ifndef lint 39 __RCSID("$NetBSD: mount_msdos.c,v 1.28 2003/05/03 15:37:08 christos Exp $"); 40 #endif /* not lint */ 41 42 #include <sys/cdefs.h> 43 #include <sys/param.h> 44 #include <sys/mount.h> 45 #include <sys/stat.h> 46 #include <msdosfs/msdosfsmount.h> 47 #include <ctype.h> 48 #include <err.h> 49 #include <grp.h> 50 #include <pwd.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <unistd.h> 55 #include <util.h> 56 57 #include <mntopts.h> 58 #include <fattr.h> 59 60 static const struct mntopt mopts[] = { 61 MOPT_STDOPTS, 62 MOPT_ASYNC, 63 MOPT_SYNC, 64 MOPT_UPDATE, 65 { NULL } 66 }; 67 68 int main __P((int, char *[])); 69 int mount_msdos __P((int argc, char **argv)); 70 static void usage __P((void)); 71 72 #ifndef MOUNT_NOMAIN 73 int 74 main(argc, argv) 75 int argc; 76 char **argv; 77 { 78 return mount_msdos(argc, argv); 79 } 80 #endif 81 82 int 83 mount_msdos(argc, argv) 84 int argc; 85 char **argv; 86 { 87 struct msdosfs_args args; 88 struct stat sb; 89 int c, mntflags, set_gid, set_uid, set_mask; 90 char *dev, *dir, ndir[MAXPATHLEN+1]; 91 92 mntflags = set_gid = set_uid = set_mask = 0; 93 (void)memset(&args, '\0', sizeof(args)); 94 95 while ((c = getopt(argc, argv, "Gsl9u:g:m:o:")) != -1) { 96 switch (c) { 97 case 'G': 98 args.flags |= MSDOSFSMNT_GEMDOSFS; 99 break; 100 case 's': 101 args.flags |= MSDOSFSMNT_SHORTNAME; 102 break; 103 case 'l': 104 args.flags |= MSDOSFSMNT_LONGNAME; 105 break; 106 case '9': 107 args.flags |= MSDOSFSMNT_NOWIN95; 108 break; 109 case 'u': 110 args.uid = a_uid(optarg); 111 set_uid = 1; 112 break; 113 case 'g': 114 args.gid = a_gid(optarg); 115 set_gid = 1; 116 break; 117 case 'm': 118 args.mask = a_mask(optarg); 119 set_mask = 1; 120 break; 121 case 'o': 122 getmntopts(optarg, mopts, &mntflags, 0); 123 break; 124 case '?': 125 default: 126 usage(); 127 break; 128 } 129 } 130 131 if (optind + 2 != argc) 132 usage(); 133 134 dev = argv[optind]; 135 dir = argv[optind + 1]; 136 if (dir[0] != '/') { 137 warnx("\"%s\" is a relative path.", dir); 138 if (getcwd(ndir, sizeof(ndir)) == NULL) 139 err(1, "getcwd"); 140 strncat(ndir, "/", sizeof(ndir) - strlen(ndir) - 1); 141 strncat(ndir, dir, sizeof(ndir) - strlen(ndir) - 1); 142 dir = ndir; 143 warnx("using \"%s\" instead.", dir); 144 } 145 146 args.fspec = dev; 147 args.export.ex_root = -2; /* unchecked anyway on DOS fs */ 148 if (mntflags & MNT_RDONLY) 149 args.export.ex_flags = MNT_EXRDONLY; 150 else 151 args.export.ex_flags = 0; 152 if (!set_gid || !set_uid || !set_mask) { 153 if (stat(dir, &sb) == -1) 154 err(1, "stat %s", dir); 155 156 if (!set_uid) 157 args.uid = sb.st_uid; 158 if (!set_gid) 159 args.gid = sb.st_gid; 160 if (!set_mask) 161 args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 162 } 163 164 if (mount(MOUNT_MSDOS, dir, mntflags, &args) < 0) 165 err(1, "%s on %s", dev, dir); 166 167 if (mntflags & MNT_GETARGS) { 168 char buf[1024]; 169 (void)snprintb(buf, sizeof(buf), MSDOSFSMNT_BITS, args.flags); 170 printf("uid=%d, gid=%d, mask=0%o, flags=%s\n", args.uid, 171 args.gid, args.mask, buf); 172 } 173 174 exit (0); 175 } 176 177 static void 178 usage() 179 { 180 181 fprintf(stderr, "usage: mount_msdos [-o options] [-u user] [-g group] [-m mask] bdev dir\n"); 182 exit(1); 183 } 184