1 /* 2 * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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 "login_locl.h" 35 36 RCSID("$Id: tty.c 7464 1999-12-02 17:05:13Z joda $"); 37 38 /* 39 * Clean the tty name. Return a pointer to the cleaned version. 40 */ 41 42 char * 43 clean_ttyname (char *tty) 44 { 45 char *res = tty; 46 47 if (strncmp (res, _PATH_DEV, strlen(_PATH_DEV)) == 0) 48 res += strlen(_PATH_DEV); 49 if (strncmp (res, "pty/", 4) == 0) 50 res += 4; 51 if (strncmp (res, "ptym/", 5) == 0) 52 res += 5; 53 return res; 54 } 55 56 /* 57 * Generate a name usable as an `ut_id', typically without `tty'. 58 */ 59 60 char * 61 make_id (char *tty) 62 { 63 char *res = tty; 64 65 if (strncmp (res, "pts/", 4) == 0) 66 res += 4; 67 if (strncmp (res, "tty", 3) == 0) 68 res += 3; 69 return res; 70 } 71