mount_msdos.c revision 1.23
1 /* $NetBSD: mount_msdos.c,v 1.23 2000/06/14 17:25:27 cgd 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 1.23 2000/06/14 17:25:27 cgd 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 56 #include "mntopts.h" 57 58 const struct mntopt mopts[] = { 59 MOPT_STDOPTS, 60 MOPT_ASYNC, 61 MOPT_SYNC, 62 MOPT_UPDATE, 63 { NULL } 64 }; 65 66 gid_t a_gid __P((char *)); 67 uid_t a_uid __P((char *)); 68 mode_t a_mask __P((char *)); 69 int main __P((int, char *[])); 70 void usage __P((void)); 71 72 int 73 main(argc, argv) 74 int argc; 75 char **argv; 76 { 77 struct msdosfs_args args; 78 struct stat sb; 79 int c, mntflags, set_gid, set_uid, set_mask; 80 char *dev, *dir, ndir[MAXPATHLEN+1]; 81 82 mntflags = set_gid = set_uid = set_mask = 0; 83 (void)memset(&args, '\0', sizeof(args)); 84 85 while ((c = getopt(argc, argv, "Gsl9u:g:m:o:")) != -1) { 86 switch (c) { 87 case 'G': 88 args.flags |= MSDOSFSMNT_GEMDOSFS; 89 break; 90 case 's': 91 args.flags |= MSDOSFSMNT_SHORTNAME; 92 break; 93 case 'l': 94 args.flags |= MSDOSFSMNT_LONGNAME; 95 break; 96 case '9': 97 args.flags |= MSDOSFSMNT_NOWIN95; 98 break; 99 case 'u': 100 args.uid = a_uid(optarg); 101 set_uid = 1; 102 break; 103 case 'g': 104 args.gid = a_gid(optarg); 105 set_gid = 1; 106 break; 107 case 'm': 108 args.mask = a_mask(optarg); 109 set_mask = 1; 110 break; 111 case 'o': 112 getmntopts(optarg, mopts, &mntflags, 0); 113 break; 114 case '?': 115 default: 116 usage(); 117 break; 118 } 119 } 120 121 if (optind + 2 != argc) 122 usage(); 123 124 dev = argv[optind]; 125 dir = argv[optind + 1]; 126 if (dir[0] != '/') { 127 warnx("\"%s\" is a relative path.", dir); 128 if (getcwd(ndir, sizeof(ndir)) == NULL) 129 err(1, "getcwd"); 130 strncat(ndir, "/", sizeof(ndir) - strlen(ndir) - 1); 131 strncat(ndir, dir, sizeof(ndir) - strlen(ndir) - 1); 132 dir = ndir; 133 warnx("using \"%s\" instead.", dir); 134 } 135 136 args.fspec = dev; 137 args.export.ex_root = -2; /* unchecked anyway on DOS fs */ 138 if (mntflags & MNT_RDONLY) 139 args.export.ex_flags = MNT_EXRDONLY; 140 else 141 args.export.ex_flags = 0; 142 if (!set_gid || !set_uid || !set_mask) { 143 if (stat(dir, &sb) == -1) 144 err(1, "stat %s", dir); 145 146 if (!set_uid) 147 args.uid = sb.st_uid; 148 if (!set_gid) 149 args.gid = sb.st_gid; 150 if (!set_mask) 151 args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 152 } 153 154 if (mount(MOUNT_MSDOS, dir, mntflags, &args) < 0) 155 err(1, "%s on %s", dev, dir); 156 157 exit (0); 158 } 159 160 gid_t 161 a_gid(s) 162 char *s; 163 { 164 struct group *gr; 165 char *gname; 166 gid_t gid; 167 168 if ((gr = getgrnam(s)) != NULL) 169 gid = gr->gr_gid; 170 else { 171 for (gname = s; *s && isdigit(*s); ++s); 172 if (!*s) 173 gid = atoi(gname); 174 else 175 errx(1, "unknown group id: %s", gname); 176 } 177 return (gid); 178 } 179 180 uid_t 181 a_uid(s) 182 char *s; 183 { 184 struct passwd *pw; 185 char *uname; 186 uid_t uid; 187 188 if ((pw = getpwnam(s)) != NULL) 189 uid = pw->pw_uid; 190 else { 191 for (uname = s; *s && isdigit(*s); ++s); 192 if (!*s) 193 uid = atoi(uname); 194 else 195 errx(1, "unknown user id: %s", uname); 196 } 197 return (uid); 198 } 199 200 mode_t 201 a_mask(s) 202 char *s; 203 { 204 int done, rv; 205 char *ep; 206 207 done = 0; 208 rv = -1; 209 if (*s >= '0' && *s <= '7') { 210 done = 1; 211 rv = strtol(optarg, &ep, 8); 212 } 213 if (!done || rv < 0 || *ep) 214 errx(1, "invalid file mode: %s", s); 215 return (rv); 216 } 217 218 void 219 usage() 220 { 221 222 fprintf(stderr, "usage: mount_msdos [-o options] [-u user] [-g group] [-m mask] bdev dir\n"); 223 exit(1); 224 } 225
Indexes created Fri Sep 26 08:10:20 GMT 2025