1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* Copyright (c) 1984 AT&T */ 23*0Sstevel@tonic-gate /* All Rights Reserved */ 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* from S5R2 1.8 */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /*LINTLIBRARY*/ 28*0Sstevel@tonic-gate #include <stdio.h> 29*0Sstevel@tonic-gate #include <fcntl.h> 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate extern int open(), fclose(); 32*0Sstevel@tonic-gate extern FILE *_findiop(), *_endopen(); 33*0Sstevel@tonic-gate 34*0Sstevel@tonic-gate FILE * 35*0Sstevel@tonic-gate fopen(file, mode) 36*0Sstevel@tonic-gate char *file, *mode; 37*0Sstevel@tonic-gate { 38*0Sstevel@tonic-gate return (_endopen(file, mode, _findiop())); 39*0Sstevel@tonic-gate } 40*0Sstevel@tonic-gate 41*0Sstevel@tonic-gate FILE * 42*0Sstevel@tonic-gate freopen(file, mode, iop) 43*0Sstevel@tonic-gate char *file, *mode; 44*0Sstevel@tonic-gate register FILE *iop; 45*0Sstevel@tonic-gate { 46*0Sstevel@tonic-gate (void) fclose(iop); /* doesn't matter if this fails */ 47*0Sstevel@tonic-gate return (_endopen(file, mode, iop)); 48*0Sstevel@tonic-gate } 49*0Sstevel@tonic-gate 50*0Sstevel@tonic-gate static FILE * 51*0Sstevel@tonic-gate _endopen(file, mode, iop) 52*0Sstevel@tonic-gate char *file, *mode; 53*0Sstevel@tonic-gate register FILE *iop; 54*0Sstevel@tonic-gate { 55*0Sstevel@tonic-gate register int plus, oflag, fd; 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate if (iop == NULL || file == NULL || file[0] == '\0') 58*0Sstevel@tonic-gate return (NULL); 59*0Sstevel@tonic-gate plus = (mode[1] == '+'); 60*0Sstevel@tonic-gate switch (mode[0]) { 61*0Sstevel@tonic-gate case 'w': 62*0Sstevel@tonic-gate oflag = (plus ? O_RDWR : O_WRONLY) | O_TRUNC | O_CREAT; 63*0Sstevel@tonic-gate break; 64*0Sstevel@tonic-gate case 'a': 65*0Sstevel@tonic-gate oflag = (plus ? O_RDWR : O_WRONLY) | O_APPEND | O_CREAT; 66*0Sstevel@tonic-gate break; 67*0Sstevel@tonic-gate case 'r': 68*0Sstevel@tonic-gate oflag = plus ? O_RDWR : O_RDONLY; 69*0Sstevel@tonic-gate break; 70*0Sstevel@tonic-gate default: 71*0Sstevel@tonic-gate return (NULL); 72*0Sstevel@tonic-gate } 73*0Sstevel@tonic-gate if ((fd = open(file, oflag, 0666)) < 0) 74*0Sstevel@tonic-gate return (NULL); 75*0Sstevel@tonic-gate iop->_cnt = 0; 76*0Sstevel@tonic-gate iop->_file = fd; 77*0Sstevel@tonic-gate iop->_flag = plus ? _IORW : (mode[0] == 'r') ? _IOREAD : _IOWRT; 78*0Sstevel@tonic-gate if (mode[0] == 'a') { 79*0Sstevel@tonic-gate if (!plus) { 80*0Sstevel@tonic-gate /* if update only mode, move file pointer to the end 81*0Sstevel@tonic-gate of the file */ 82*0Sstevel@tonic-gate if ((lseek(fd,0L,2)) < 0) { 83*0Sstevel@tonic-gate (void) close(fd); 84*0Sstevel@tonic-gate return NULL; 85*0Sstevel@tonic-gate } 86*0Sstevel@tonic-gate } 87*0Sstevel@tonic-gate } 88*0Sstevel@tonic-gate iop->_base = iop->_ptr = NULL; 89*0Sstevel@tonic-gate iop->_bufsiz = 0; 90*0Sstevel@tonic-gate return (iop); 91*0Sstevel@tonic-gate } 92