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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* Copyright (c) 1988 AT&T */ 29 /* All Rights Reserved */ 30 31 32 /* 33 * Return the number of the slot in the utmp file 34 * corresponding to the current user: try for file 0, 1, 2. 35 * Returns -1 if slot not found. 36 */ 37 38 #pragma weak ttyslot = _ttyslot 39 40 #include "synonyms.h" 41 #include <string.h> 42 #include <stdio.h> 43 #include <sys/types.h> 44 #include <sys/stat.h> 45 #include <unistd.h> 46 #include <utmpx.h> 47 #include <stdlib.h> 48 49 #ifndef TRUE 50 #define TRUE 1 51 #define FALSE 0 52 #endif 53 54 int 55 ttyslot(void) 56 { 57 struct futmpx ubuf; 58 char *tp, *p; 59 int s; 60 int ret = -1, console = FALSE; 61 char ttynm[128]; 62 FILE *fp; 63 64 if ((tp = ttyname_r(0, ttynm, 128)) == NULL && 65 (tp = ttyname_r(1, ttynm, 128)) == NULL && 66 (tp = ttyname_r(2, ttynm, 128)) == NULL) 67 return (-1); 68 69 p = tp; 70 if (strncmp(tp, "/dev/", 5) == 0) 71 p += 5; 72 73 if (strcmp(p, "console") == 0) 74 console = TRUE; 75 76 s = 0; 77 if ((fp = fopen(UTMPX_FILE, "rF")) == NULL) 78 return (-1); 79 while ((fread(&ubuf, sizeof (ubuf), 1, fp)) == 1) { 80 if ((ubuf.ut_type == INIT_PROCESS || 81 ubuf.ut_type == LOGIN_PROCESS || 82 ubuf.ut_type == USER_PROCESS) && 83 strncmp(p, ubuf.ut_line, sizeof (ubuf.ut_line)) == 0) { 84 ret = s; 85 if (!console || strncmp(ubuf.ut_host, ":0", 2) == 0) 86 break; 87 } 88 s++; 89 } 90 (void) fclose(fp); 91 return (ret); 92 } 93