1 /* $NetBSD: dev_mkdb.c,v 1.10 2001/04/10 06:11:27 enami Exp $ */ 2 3 /*- 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. 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 by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1990, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "from: @(#)dev_mkdb.c 8.1 (Berkeley) 6/6/93"; 45 #else 46 __RCSID("$NetBSD: dev_mkdb.c,v 1.10 2001/04/10 06:11:27 enami Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/stat.h> 52 53 #include <db.h> 54 #include <err.h> 55 #include <errno.h> 56 #include <fcntl.h> 57 #include <fts.h> 58 #include <kvm.h> 59 #include <nlist.h> 60 #include <paths.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <unistd.h> 65 66 int main __P((int, char *[])); 67 void usage __P((void)); 68 69 int 70 main(argc, argv) 71 int argc; 72 char *argv[]; 73 { 74 struct stat *st; 75 struct { 76 mode_t type; 77 dev_t dev; 78 } bkey; 79 DB *db; 80 DBT data, key; 81 FTS *ftsp; 82 FTSENT *p; 83 int ch; 84 u_char buf[MAXPATHLEN + 1]; 85 char dbtmp[MAXPATHLEN + 1], dbname[MAXPATHLEN + 1]; 86 char *pathv[2]; 87 88 while ((ch = getopt(argc, argv, "")) != -1) 89 switch (ch) { 90 case '?': 91 default: 92 usage(); 93 } 94 argc -= optind; 95 argv += optind; 96 97 if (argc > 0) 98 usage(); 99 100 if (chdir(_PATH_DEV)) 101 err(1, "%s", _PATH_DEV); 102 103 pathv[0] = _PATH_DEV; 104 pathv[1] = NULL; 105 ftsp = fts_open(pathv, FTS_PHYSICAL, NULL); 106 if (ftsp == NULL) 107 err(1, "fts_open: %s", _PATH_DEV); 108 109 (void)snprintf(dbtmp, sizeof(dbtmp), "%sdev.tmp", _PATH_VARRUN); 110 (void)snprintf(dbname, sizeof(dbtmp), "%sdev.db", _PATH_VARRUN); 111 db = dbopen(dbtmp, O_CREAT|O_EXLOCK|O_RDWR|O_TRUNC, 112 S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH, DB_HASH, NULL); 113 if (db == NULL) 114 err(1, "%s", dbtmp); 115 116 /* 117 * Keys are a mode_t followed by a dev_t. The former is the type of 118 * the file (mode & S_IFMT), the latter is the st_rdev field. Note 119 * that the structure may contain padding, so we have to clear it 120 * out here. 121 */ 122 memset(&bkey, 0, sizeof(bkey)); 123 key.data = &bkey; 124 key.size = sizeof(bkey); 125 data.data = buf; 126 while ((p = fts_read(ftsp)) != NULL) { 127 switch (p->fts_info) { 128 case FTS_DEFAULT: 129 st = p->fts_statp; 130 break; 131 default: 132 continue; 133 } 134 135 /* Create the key. */ 136 if (S_ISCHR(st->st_mode)) 137 bkey.type = S_IFCHR; 138 else if (S_ISBLK(st->st_mode)) 139 bkey.type = S_IFBLK; 140 else 141 continue; 142 bkey.dev = st->st_rdev; 143 144 /* 145 * Create the data; nul terminate the name so caller doesn't 146 * have to. Skip _PATH_DEV and slash. 147 */ 148 strlcpy(buf, p->fts_path + sizeof(_PATH_DEV), sizeof(buf)); 149 data.size = p->fts_pathlen - sizeof(_PATH_DEV) + 1; 150 if ((*db->put)(db, &key, &data, 0)) 151 err(1, "dbput %s", dbtmp); 152 } 153 (void)(*db->close)(db); 154 fts_close(ftsp); 155 if (rename(dbtmp, dbname)) 156 err(1, "rename %s to %s", dbtmp, dbname); 157 exit(0); 158 } 159 160 void 161 usage() 162 { 163 164 (void)fprintf(stderr, "usage: dev_mkdb\n"); 165 exit(1); 166 } 167