mount_msdos.c revision 1.21
1 /* $NetBSD: mount_msdos.c,v 1.21 2000/03/27 09:33:22 jdolecek 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 by Christopher G. Demetriou. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 #ifndef lint 35 __RCSID("$NetBSD: mount_msdos.c,v 1.21 2000/03/27 09:33:22 jdolecek Exp $"); 36 #endif /* not lint */ 37 38 #include <sys/cdefs.h> 39 #include <sys/param.h> 40 #include <sys/mount.h> 41 #include <sys/stat.h> 42 #include <msdosfs/msdosfsmount.h> 43 #include <ctype.h> 44 #include <err.h> 45 #include <grp.h> 46 #include <pwd.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <unistd.h> 51 52 #include "mntopts.h" 53 54 const struct mntopt mopts[] = { 55 MOPT_STDOPTS, 56 MOPT_ASYNC, 57 MOPT_SYNC, 58 MOPT_UPDATE, 59 { NULL } 60 }; 61 62 gid_t a_gid __P((char *)); 63 uid_t a_uid __P((char *)); 64 mode_t a_mask __P((char *)); 65 int main __P((int, char *[])); 66 void usage __P((void)); 67 68 int 69 main(argc, argv) 70 int argc; 71 char **argv; 72 { 73 struct msdosfs_args args; 74 struct stat sb; 75 int c, mntflags, set_gid, set_uid, set_mask; 76 char *dev, *dir, ndir[MAXPATHLEN+1]; 77 78 mntflags = set_gid = set_uid = set_mask = 0; 79 (void)memset(&args, '\0', sizeof(args)); 80 81 while ((c = getopt(argc, argv, "Gsl9u:g:m:o:")) != -1) { 82 switch (c) { 83 case 'G': 84 args.flags |= MSDOSFSMNT_GEMDOSFS; 85 break; 86 case 's': 87 args.flags |= MSDOSFSMNT_SHORTNAME; 88 break; 89 case 'l': 90 args.flags |= MSDOSFSMNT_LONGNAME; 91 break; 92 case '9': 93 args.flags |= MSDOSFSMNT_NOWIN95; 94 break; 95 case 'u': 96 args.uid = a_uid(optarg); 97 set_uid = 1; 98 break; 99 case 'g': 100 args.gid = a_gid(optarg); 101 set_gid = 1; 102 break; 103 case 'm': 104 args.mask = a_mask(optarg); 105 set_mask = 1; 106 break; 107 case 'o': 108 getmntopts(optarg, mopts, &mntflags, 0); 109 break; 110 case '?': 111 default: 112 usage(); 113 break; 114 } 115 } 116 117 if (optind + 2 != argc) 118 usage(); 119 120 dev = argv[optind]; 121 dir = argv[optind + 1]; 122 if (dir[0] != '/') { 123 warnx("\"%s\" is a relative path.", dir); 124 if (getcwd(ndir, sizeof(ndir)) == NULL) 125 err(1, "getcwd"); 126 strncat(ndir, "/", sizeof(ndir) - strlen(ndir) - 1); 127 strncat(ndir, dir, sizeof(ndir) - strlen(ndir) - 1); 128 dir = ndir; 129 warnx("using \"%s\" instead.", dir); 130 } 131 132 args.fspec = dev; 133 args.export.ex_root = -2; /* unchecked anyway on DOS fs */ 134 if (mntflags & MNT_RDONLY) 135 args.export.ex_flags = MNT_EXRDONLY; 136 else 137 args.export.ex_flags = 0; 138 if (!set_gid || !set_uid || !set_mask) { 139 if (stat(dir, &sb) == -1) 140 err(1, "stat %s", dir); 141 142 if (!set_uid) 143 args.uid = sb.st_uid; 144 if (!set_gid) 145 args.gid = sb.st_gid; 146 if (!set_mask) 147 args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 148 } 149 150 if (mount(MOUNT_MSDOS, dir, mntflags, &args) < 0) 151 err(1, "%s on %s", dev, dir); 152 153 exit (0); 154 } 155 156 gid_t 157 a_gid(s) 158 char *s; 159 { 160 struct group *gr; 161 char *gname; 162 gid_t gid; 163 164 if ((gr = getgrnam(s)) != NULL) 165 gid = gr->gr_gid; 166 else { 167 for (gname = s; *s && isdigit(*s); ++s); 168 if (!*s) 169 gid = atoi(gname); 170 else 171 errx(1, "unknown group id: %s", gname); 172 } 173 return (gid); 174 } 175 176 uid_t 177 a_uid(s) 178 char *s; 179 { 180 struct passwd *pw; 181 char *uname; 182 uid_t uid; 183 184 if ((pw = getpwnam(s)) != NULL) 185 uid = pw->pw_uid; 186 else { 187 for (uname = s; *s && isdigit(*s); ++s); 188 if (!*s) 189 uid = atoi(uname); 190 else 191 errx(1, "unknown user id: %s", uname); 192 } 193 return (uid); 194 } 195 196 mode_t 197 a_mask(s) 198 char *s; 199 { 200 int done, rv; 201 char *ep; 202 203 done = 0; 204 rv = -1; 205 if (*s >= '0' && *s <= '7') { 206 done = 1; 207 rv = strtol(optarg, &ep, 8); 208 } 209 if (!done || rv < 0 || *ep) 210 errx(1, "invalid file mode: %s", s); 211 return (rv); 212 } 213 214 void 215 usage() 216 { 217 218 fprintf(stderr, "usage: mount_msdos [-o options] [-u user] [-g group] [-m mask] bdev dir\n"); 219 exit(1); 220 } 221
Indexes created Fri Sep 26 20:09:58 GMT 2025