mount_filecore.c revision 1.10
1 /* $NetBSD: mount_filecore.c,v 1.10 2005/01/31 05:19:19 erh Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993, 1994 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is contains code contributed to the NetBSD project by 8 * Christopher G. Demetriou 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * mount_filecore.c 1.1 1998/6/26 35 */ 36 37 /* 38 * Copyright (c) 1998 Andrew McMurry 39 * 40 * This code is contains code contributed to the NetBSD project by 41 * Christopher G. Demetriou 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * mount_filecore.c 1.1 1998/6/26 72 */ 73 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\ 77 The Regents of the University of California.\n\ 78 Copyright (c) 1998 Andrew McMurry\n\ 79 All rights reserved.\n"); 80 #endif /* not lint */ 81 82 #include <sys/param.h> 83 #include <sys/mount.h> 84 85 #include <ctype.h> 86 #include <err.h> 87 #include <grp.h> 88 #include <pwd.h> 89 #include <stdlib.h> 90 #include <stdio.h> 91 #include <string.h> 92 #include <unistd.h> 93 #include <util.h> 94 95 #include <filecorefs/filecore_mount.h> 96 97 #include <mntopts.h> 98 #include <fattr.h> 99 100 static const struct mntopt mopts[] = { 101 MOPT_STDOPTS, 102 MOPT_UPDATE, 103 MOPT_GETARGS, 104 { NULL } 105 }; 106 107 int main __P((int, char *[])); 108 int mount_filecore __P((int argc, char **argv)); 109 static void usage __P((void)); 110 111 #ifndef MOUNT_NOMAIN 112 int 113 main(argc, argv) 114 int argc; 115 char **argv; 116 { 117 return mount_filecore(argc, argv); 118 } 119 #endif 120 121 int 122 mount_filecore(argc, argv) 123 int argc; 124 char **argv; 125 { 126 struct filecore_args args; 127 int ch, mntflags, opts, useuid; 128 char *dev, *dir, canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN]; 129 130 mntflags = opts = 0; 131 useuid = 1; 132 args.uid = 0; 133 args.gid = 0; 134 135 while ((ch = getopt(argc, argv, "anRfu:g:o:")) != -1) 136 switch (ch) { 137 case 'a': 138 args.flags |= FILECOREMNT_ALLACCESS; 139 break; 140 case 'n': 141 args.flags |= FILECOREMNT_OWNACCESS; 142 break; 143 case 'R': 144 args.flags |= FILECOREMNT_OWNREAD; 145 break; 146 case 'f': 147 args.flags |= FILECOREMNT_FILETYPE; 148 break; 149 case 'u': 150 args.uid = a_uid(optarg); 151 useuid = 0; 152 break; 153 case 'g': 154 args.gid = a_gid(optarg); 155 useuid = 0; 156 break; 157 case 'o': 158 getmntopts(optarg, mopts, &mntflags, 0); 159 break; 160 case '?': 161 default: 162 usage(); 163 } 164 argc -= optind; 165 argv += optind; 166 167 if (argc != 2) 168 usage(); 169 170 dev = argv[0]; 171 dir = argv[1]; 172 173 if (realpath(dev, canon_dev) == NULL) /* Check device path */ 174 err(1, "realpath %s", dev); 175 if (strncmp(dev, canon_dev, MAXPATHLEN)) { 176 warnx("\"%s\" is a relative path.", dev); 177 dev = canon_dev; 178 warnx("using \"%s\" instead.", dev); 179 } 180 181 if (realpath(dir, canon_dir) == NULL) /* Check mounton path */ 182 err(1, "realpath %s", dir); 183 if (strncmp(dir, canon_dir, MAXPATHLEN)) { 184 warnx("\"%s\" is a relative path.", dir); 185 dir = canon_dir; 186 warnx("using \"%s\" instead.", dir); 187 } 188 189 #define DEFAULT_ROOTUID -2 190 /* 191 * FILECORE filesystems are not writable. 192 */ 193 mntflags |= MNT_RDONLY; 194 if (useuid) args.flags |= FILECOREMNT_USEUID; 195 args.export.ex_flags = MNT_EXRDONLY; 196 args.fspec = dev; 197 args.export.ex_root = DEFAULT_ROOTUID; 198 args.flags = opts; 199 200 if (mount(MOUNT_FILECORE, dir, mntflags, &args) < 0) 201 err(1, "%s on %s", dev, dir); 202 if (mntflags & MNT_GETARGS) { 203 char buf[1024]; 204 (void)snprintb(buf, sizeof(buf), FILECOREMNT_BITS, args.flags); 205 printf("uid=%d, gid=%d, flags=%s\n", args.uid, args.gid, buf); 206 } 207 exit(0); 208 } 209 210 static void 211 usage() 212 { 213 (void)fprintf(stderr, 214 "usage: mount_filecore [-afnR] [-g gid] [-o options] [-u uid] special node\n"); 215 exit(1); 216 } 217
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