1 /* $NetBSD: mount_ados.c,v 1.28 2008/08/05 20:57:45 pooka 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_ados.c,v 1.28 2008/08/05 20:57:45 pooka Exp $"); 40 #endif /* not lint */ 41 42 #include <sys/param.h> 43 #include <sys/mount.h> 44 #include <sys/stat.h> 45 #include <assert.h> 46 #include <err.h> 47 #include <grp.h> 48 #include <pwd.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <unistd.h> 53 54 #include <adosfs/adosfs.h> 55 56 #include <mntopts.h> 57 #include <errno.h> 58 59 #include "mountprog.h" 60 61 static const struct mntopt mopts[] = { 62 MOPT_STDOPTS, 63 MOPT_GETARGS, 64 MOPT_NULL, 65 }; 66 67 int mount_ados(int argc, char **argv); 68 static void usage(void); 69 70 #ifndef MOUNT_NOMAIN 71 int 72 main(int argc, char **argv) 73 { 74 return mount_ados(argc, argv); 75 } 76 #endif 77 78 int 79 mount_ados(int argc, char **argv) 80 { 81 struct adosfs_args args; 82 struct stat sb; 83 mntoptparse_t mp; 84 int c, mntflags, set_gid, set_uid, set_mask; 85 char *dev, *dir, canon_dir[MAXPATHLEN], canon_dev[MAXPATHLEN]; 86 87 mntflags = set_gid = set_uid = set_mask = 0; 88 (void)memset(&args, '\0', sizeof(args)); 89 90 while ((c = getopt(argc, argv, "u:g:m:o:")) != -1) { 91 switch (c) { 92 case 'u': 93 args.uid = a_uid(optarg); 94 set_uid = 1; 95 break; 96 case 'g': 97 args.gid = a_gid(optarg); 98 set_gid = 1; 99 break; 100 case 'm': 101 args.mask = a_mask(optarg); 102 set_mask = 1; 103 break; 104 case 'o': 105 mp = getmntopts(optarg, mopts, &mntflags, 0); 106 if (mp == NULL) 107 err(1, "getmntopts"); 108 freemntopts(mp); 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]; 122 123 if (realpath(dev, canon_dev) == NULL) /* Check device path */ 124 err(1, "realpath %s", dev); 125 if (strncmp(dev, canon_dev, MAXPATHLEN)) { 126 warnx("\"%s\" is a relative path.", dev); 127 dev = canon_dev; 128 warnx("using \"%s\" instead.", dev); 129 } 130 131 if (realpath(dir, canon_dir) == NULL) /* Check mounton path */ 132 err(1, "realpath %s", dir); 133 if (strncmp(dir, canon_dir, MAXPATHLEN)) { 134 warnx("\"%s\" is a relative path.", dir); 135 dir = canon_dir; 136 warnx("using \"%s\" instead.", dir); 137 } 138 139 args.fspec = dev; 140 if (!set_gid || !set_uid || !set_mask) { 141 if (stat(dir, &sb) == -1) 142 err(1, "stat %s", dir); 143 144 if (!set_uid) 145 args.uid = sb.st_uid; 146 if (!set_gid) 147 args.gid = sb.st_gid; 148 if (!set_mask) 149 args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 150 } 151 152 if (mount(MOUNT_ADOSFS, dir, mntflags, &args, sizeof args) == -1) 153 if (errno != EROFS) 154 err(1, "%s on %s", dev, dir); 155 156 if (mntflags & MNT_GETARGS) { 157 assert(errno != EROFS); 158 printf("uid=%d, gid=%d, mask=0%o\n", args.uid, args.gid, 159 args.mask); 160 exit(0); 161 } 162 163 mntflags |= MNT_RDONLY; 164 if (mount(MOUNT_ADOSFS, dir, mntflags, &args, sizeof args) == -1) 165 err(1, "%s on %s", dev, dir); 166 167 exit (0); 168 } 169 170 static void 171 usage(void) 172 { 173 174 fprintf(stderr, "usage: mount_ados [-o options] [-u user] [-g group] [-m mask] bdev dir\n"); 175 exit(1); 176 } 177