1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 char copyright[] = 36 "@(#) Copyright (c) 1990 The Regents of the University of California.\n\ 37 All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 /*static char sccsid[] = "from: @(#)dev_mkdb.c 5.9 (Berkeley) 5/17/91";*/ 42 static char rcsid[] = "$Id: dev_mkdb.c,v 1.4 1993/10/22 10:38:33 mycroft Exp $"; 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <sys/stat.h> 47 #include <fcntl.h> 48 #undef DIRBLKSIZ 49 #include <dirent.h> 50 #include <nlist.h> 51 #include <kvm.h> 52 #include <db.h> 53 #include <errno.h> 54 #include <unistd.h> 55 #include <stdio.h> 56 #include <paths.h> 57 #include <stdlib.h> 58 #include <string.h> 59 60 void error(), usage(); 61 62 main(argc, argv) 63 int argc; 64 char **argv; 65 { 66 extern int optind; 67 register DIR *dirp; 68 register struct dirent *dp; 69 struct stat sb; 70 struct { 71 mode_t type; 72 dev_t dev; 73 } bkey; 74 DB *db; 75 DBT data, key; 76 int ch; 77 u_char buf[MAXNAMLEN + 1]; 78 char dbtmp[MAXPATHLEN + 1], dbname[MAXPATHLEN + 1]; 79 80 while ((ch = getopt(argc, argv, "")) != EOF) 81 switch((char)ch) { 82 case '?': 83 default: 84 usage(); 85 } 86 argc -= optind; 87 argv += optind; 88 89 if (chdir(_PATH_DEV)) 90 error(_PATH_DEV); 91 92 dirp = opendir("."); 93 94 (void)snprintf(dbtmp, sizeof(dbtmp), "%s/dev.tmp", _PATH_VARRUN); 95 (void)snprintf(dbname, sizeof(dbtmp), "%s/dev.db", _PATH_VARRUN); 96 db = dbopen(dbtmp, O_CREAT|O_RDWR|O_EXCL, DEFFILEMODE, DB_HASH, 97 (HASHINFO *)NULL); 98 if (!db) 99 error(dbtmp); 100 101 /* 102 * Keys are a mode_t followed by a dev_t. The former is the type of 103 * the file (mode & S_IFMT), the latter is the st_rdev field. 104 */ 105 key.data = &bkey; 106 key.size = sizeof(bkey); 107 data.data = buf; 108 while (dp = readdir(dirp)) { 109 if (lstat(dp->d_name, &sb)) { 110 (void)fprintf(stderr, "dev_mkdb: can't stat %s\n", 111 dp->d_name); 112 continue; 113 } 114 115 /* Create the key. */ 116 if (S_ISCHR(sb.st_mode)) 117 bkey.type = S_IFCHR; 118 else if (S_ISBLK(sb.st_mode)) 119 bkey.type = S_IFBLK; 120 else 121 continue; 122 bkey.dev = sb.st_rdev; 123 124 /* 125 * Create the data; nul terminate the name so caller doesn't 126 * have to. 127 */ 128 bcopy(dp->d_name, buf, dp->d_namlen); 129 buf[dp->d_namlen] = '\0'; 130 data.size = dp->d_namlen + 1; 131 if ((db->put)(db, &key, &data, 0)) 132 error(dbtmp); 133 } 134 (void)(db->close)(db); 135 if (rename(dbtmp, dbname)) { 136 (void)fprintf(stderr, "dev_mkdb: %s to %s: %s.\n", 137 dbtmp, dbname, strerror(errno)); 138 exit(1); 139 } 140 exit(0); 141 } 142 143 void 144 error(n) 145 char *n; 146 { 147 (void)fprintf(stderr, "dev_mkdb: %s: %s\n", n, strerror(errno)); 148 exit(1); 149 } 150 151 void 152 usage() 153 { 154 (void)fprintf(stderr, "usage: dev_mkdb\n"); 155 exit(1); 156 } 157