1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 /* 34 * Return the number of the slot in the utmp file 35 * corresponding to the current user: try for file 0, 1, 2. 36 * Returns -1 if slot not found. 37 */ 38 39 #pragma weak ttyslot = _ttyslot 40 41 #include "synonyms.h" 42 #include <string.h> 43 #include <stdio.h> 44 #include <sys/types.h> 45 #include <sys/stat.h> 46 #include <unistd.h> 47 #include <utmpx.h> 48 #include <stdlib.h> 49 50 #ifndef TRUE 51 #define TRUE 1 52 #define FALSE 0 53 #endif 54 55 int 56 ttyslot(void) 57 { 58 struct futmpx ubuf; 59 char *tp, *p; 60 int s; 61 int ret = -1, console = FALSE; 62 char ttynm[128]; 63 FILE *fp; 64 65 if ((tp = ttyname_r(0, ttynm, 128)) == NULL && 66 (tp = ttyname_r(1, ttynm, 128)) == NULL && 67 (tp = ttyname_r(2, ttynm, 128)) == NULL) 68 return (-1); 69 70 p = tp; 71 if (strncmp(tp, "/dev/", 5) == 0) 72 p += 5; 73 74 if (strcmp(p, "console") == 0) 75 console = TRUE; 76 77 s = 0; 78 if ((fp = fopen(UTMPX_FILE, "r")) == NULL) 79 return (-1); 80 while ((fread(&ubuf, sizeof (ubuf), 1, fp)) == 1) { 81 if ((ubuf.ut_type == INIT_PROCESS || 82 ubuf.ut_type == LOGIN_PROCESS || 83 ubuf.ut_type == USER_PROCESS) && 84 strncmp(p, ubuf.ut_line, sizeof (ubuf.ut_line)) == 0) { 85 ret = s; 86 if (!console || strncmp(ubuf.ut_host, ":0", 2) == 0) 87 break; 88 } 89 s++; 90 } 91 (void) fclose(fp); 92 return (ret); 93 } 94