1 /*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. 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 #include <sys/cdefs.h> 35 #ifndef lint 36 __COPYRIGHT("@(#) Copyright (c) 1990, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"); 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "from: @(#)dev_mkdb.c 8.1 (Berkeley) 6/6/93"; 43 #else 44 __RCSID("$NetBSD: dev_mkdb.c,v 1.8 1997/10/18 08:18:00 lukem Exp $"); 45 #endif 46 #endif /* not lint */ 47 48 #include <sys/param.h> 49 #include <sys/stat.h> 50 51 #include <db.h> 52 #include <dirent.h> 53 #include <err.h> 54 #include <errno.h> 55 #include <fcntl.h> 56 #include <kvm.h> 57 #include <nlist.h> 58 #include <paths.h> 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 #include <unistd.h> 63 64 int main __P((int, char **)); 65 void usage __P((void)); 66 67 int 68 main(argc, argv) 69 int argc; 70 char *argv[]; 71 { 72 DIR *dirp; 73 struct dirent *dp; 74 struct stat sb; 75 struct { 76 mode_t type; 77 dev_t dev; 78 } bkey; 79 DB *db; 80 DBT data, key; 81 int ch; 82 u_char buf[MAXNAMLEN + 1]; 83 char dbtmp[MAXPATHLEN + 1], dbname[MAXPATHLEN + 1]; 84 85 while ((ch = getopt(argc, argv, "")) != -1) 86 switch((char)ch) { 87 case '?': 88 default: 89 usage(); 90 } 91 argc -= optind; 92 argv += optind; 93 94 if (argc > 0) 95 usage(); 96 97 if (chdir(_PATH_DEV)) 98 err(1, "%s", _PATH_DEV); 99 100 dirp = opendir("."); 101 102 (void)snprintf(dbtmp, sizeof(dbtmp), "%sdev.tmp", _PATH_VARRUN); 103 (void)snprintf(dbname, sizeof(dbtmp), "%sdev.db", _PATH_VARRUN); 104 db = dbopen(dbtmp, O_CREAT|O_EXLOCK|O_RDWR|O_TRUNC, 105 S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH, DB_HASH, NULL); 106 if (db == NULL) 107 err(1, "%s", dbtmp); 108 109 /* 110 * Keys are a mode_t followed by a dev_t. The former is the type of 111 * the file (mode & S_IFMT), the latter is the st_rdev field. Note 112 * that the structure may contain padding, so we have to clear it 113 * out here. 114 */ 115 memset(&bkey, 0, sizeof(bkey)); 116 key.data = &bkey; 117 key.size = sizeof(bkey); 118 data.data = buf; 119 while ((dp = readdir(dirp)) != NULL) { 120 if (lstat(dp->d_name, &sb)) { 121 warn("%s", dp->d_name); 122 continue; 123 } 124 125 /* Create the key. */ 126 if (S_ISCHR(sb.st_mode)) 127 bkey.type = S_IFCHR; 128 else if (S_ISBLK(sb.st_mode)) 129 bkey.type = S_IFBLK; 130 else 131 continue; 132 bkey.dev = sb.st_rdev; 133 134 /* 135 * Create the data; nul terminate the name so caller doesn't 136 * have to. 137 */ 138 memmove(buf, dp->d_name, dp->d_namlen); 139 buf[dp->d_namlen] = '\0'; 140 data.size = dp->d_namlen + 1; 141 if ((db->put)(db, &key, &data, 0)) 142 err(1, "dbput %s", dbtmp); 143 } 144 (void)(db->close)(db); 145 if (rename(dbtmp, dbname)) 146 err(1, "rename %s to %s", dbtmp, dbname); 147 exit(0); 148 } 149 150 void 151 usage() 152 { 153 154 (void)fprintf(stderr, "usage: dev_mkdb\n"); 155 exit(1); 156 } 157