/* * 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) 1988, 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 <sys/ioctl.h> #include <sys/termios.h> #include <fcntl.h> #include <dirent.h> #include <db.h> #include <string.h> #include <paths.h> static char buf[sizeof(_PATH_DEV) + MAXNAMLEN] = _PATH_DEV; static char *oldttyname __P((int, struct stat *)); char * ttyname(fd) int fd; { struct stat sb; struct termios term; DB *db; DBT data, key; struct { mode_t type; dev_t dev; } bkey; /* Must be a terminal. */ if (ioctl(fd, TIOCGETA, &term) < 0) return (NULL); /* Must be a character device. */ if (fstat(fd, &sb) || !S_ISCHR(sb.st_mode)) return (NULL); db = dbopen(_PATH_DEVDB, O_RDONLY, 0, DB_HASH, NULL); if (db) { memset(&bkey, 0, sizeof(bkey)); bkey.type = S_IFCHR; bkey.dev = sb.st_rdev; key.data = &bkey; key.size = sizeof(bkey); if (!(db->get)(db, &key, &data, 0)) { bcopy(data.data, buf + sizeof(_PATH_DEV) - 1, data.size); (void)(db->close)(db); return (buf); } (void)(db->close)(db); } return (oldttyname(fd, &sb)); } static char * oldttyname(fd, sb) int fd; struct stat *sb; { register struct dirent *dirp; register DIR *dp; struct stat dsb; if ((dp = opendir(_PATH_DEV)) == NULL) return (NULL); while ( (dirp = readdir(dp)) ) { if (dirp->d_fileno != sb->st_ino) continue; bcopy(dirp->d_name, buf + sizeof(_PATH_DEV) - 1, dirp->d_namlen + 1); if (stat(buf, &dsb) || sb->st_dev != dsb.st_dev || sb->st_ino != dsb.st_ino) continue; (void)closedir(dp); return (buf); } (void)closedir(dp); return (NULL); }