/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1989, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/types.h> #include <sys/stat.h> #include <db.h> #include <dirent.h> #include <err.h> #include <errno.h> #include <fcntl.h> #include <paths.h> #include <stdio.h> #include <string.h> static char buf[sizeof(_PATH_DEV) + MAXNAMLEN] = _PATH_DEV; static char *olddevname __P((dev_t, mode_t)); char * devname(dev, type) dev_t dev; mode_t type; { struct { mode_t type; dev_t dev; } bkey; static DB *db; static int failure; DBT data, key; if (!db && !failure && !(db = dbopen(_PATH_DEVDB, O_RDONLY, 0, DB_HASH, NULL))) { failure = 1; } if (failure) return (olddevname(dev, type)); /* * Keys are a mode_t followed by a dev_t. The former is the type of * the file (mode & S_IFMT), the latter is the st_rdev field. Be * sure to clear any padding that may be found in bkey. */ memset(&bkey, 0, sizeof(bkey)); bkey.dev = dev; bkey.type = type; key.data = &bkey; key.size = sizeof(bkey); return ((db->get)(db, &key, &data, 0) ? NULL : (char *)data.data); } static char * olddevname(dev, type) dev_t dev; mode_t type; { register DIR *dp; register struct dirent *dirp; struct stat sb; if ((dp = opendir(_PATH_DEV)) == NULL) return (NULL); while ( (dirp = readdir(dp)) ) { bcopy(dirp->d_name, buf + sizeof(_PATH_DEV) - 1, dirp->d_namlen + 1); if (stat(buf, &sb)) continue; if (dev != sb.st_rdev) continue; if (type != (sb.st_mode & S_IFMT)) continue; (void)closedir(dp); return (buf + sizeof(_PATH_DEV) - 1); } (void)closedir(dp); return (NULL); }