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[] = "@(#)dev_mkdb.c 5.9 (Berkeley) 5/17/91"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/stat.h> 46 #include <fcntl.h> 47 #undef DIRBLKSIZ 48 #include <dirent.h> 49 #include <nlist.h> 50 #include <kvm.h> 51 #include <db.h> 52 #include <errno.h> 53 #include <unistd.h> 54 #include <stdio.h> 55 #include <paths.h> 56 #include <stdlib.h> 57 #include <string.h> 58 59 void error(), usage(); 60 61 main(argc, argv) 62 int argc; 63 char **argv; 64 { 65 extern int optind; 66 register DIR *dirp; 67 register struct dirent *dp; 68 struct stat sb; 69 struct { 70 mode_t type; 71 dev_t dev; 72 } bkey; 73 DB *db; 74 DBT data, key; 75 int ch; 76 u_char buf[MAXNAMLEN + 1]; 77 char dbtmp[MAXPATHLEN + 1], dbname[MAXPATHLEN + 1]; 78 79 while ((ch = getopt(argc, argv, "")) != EOF) 80 switch((char)ch) { 81 case '?': 82 default: 83 usage(); 84 } 85 argc -= optind; 86 argv += optind; 87 88 if (chdir(_PATH_DEV)) 89 error(_PATH_DEV); 90 91 dirp = opendir("."); 92 93 (void)snprintf(dbtmp, sizeof(dbtmp), "%s/dev.tmp", _PATH_VARRUN); 94 (void)snprintf(dbname, sizeof(dbtmp), "%s/dev.db", _PATH_VARRUN); 95 db = dbopen(dbtmp, O_CREAT|O_RDWR|O_EXCL, DEFFILEMODE, DB_HASH, 96 (HASHINFO *)NULL); 97 if (!db) 98 error(dbtmp); 99 100 /* 101 * Keys are a mode_t followed by a dev_t. The former is the type of 102 * the file (mode & S_IFMT), the latter is the st_rdev field. 103 */ 104 key.data = &bkey; 105 key.size = sizeof(bkey); 106 data.data = buf; 107 while (dp = readdir(dirp)) { 108 if (stat(dp->d_name, &sb)) { 109 (void)fprintf(stderr, "dev_mkdb: can't stat %s\n", 110 dp->d_name); 111 continue; 112 } 113 114 /* Create the key. */ 115 if (S_ISCHR(sb.st_mode)) 116 bkey.type = S_IFCHR; 117 else if (S_ISBLK(sb.st_mode)) 118 bkey.type = S_IFBLK; 119 else 120 continue; 121 bkey.dev = sb.st_rdev; 122 123 /* 124 * Create the data; nul terminate the name so caller doesn't 125 * have to. 126 */ 127 bcopy(dp->d_name, buf, dp->d_namlen); 128 buf[dp->d_namlen] = '\0'; 129 data.size = dp->d_namlen + 1; 130 if ((db->put)(db, &key, &data, 0)) 131 error(dbtmp); 132 } 133 (void)(db->close)(db); 134 if (rename(dbtmp, dbname)) { 135 (void)fprintf(stderr, "dev_mkdb: %s to %s: %s.\n", 136 dbtmp, dbname, strerror(errno)); 137 exit(1); 138 } 139 exit(0); 140 } 141 142 void 143 error(n) 144 char *n; 145 { 146 (void)fprintf(stderr, "dev_mkdb: %s: %s\n", n, strerror(errno)); 147 exit(1); 148 } 149 150 void 151 usage() 152 { 153 (void)fprintf(stderr, "usage: dev_mkdb\n"); 154 exit(1); 155 } 156