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 /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 30*0Sstevel@tonic-gate /* All Rights Reserved */ 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #include "synonyms.h" 34*0Sstevel@tonic-gate #include "file64.h" 35*0Sstevel@tonic-gate #include "mtlib.h" 36*0Sstevel@tonic-gate #include <sys/types.h> 37*0Sstevel@tonic-gate #include <stdio.h> 38*0Sstevel@tonic-gate #include <memory.h> 39*0Sstevel@tonic-gate #include <thread.h> 40*0Sstevel@tonic-gate #include <synch.h> 41*0Sstevel@tonic-gate #include <errno.h> 42*0Sstevel@tonic-gate #include "stdiom.h" 43*0Sstevel@tonic-gate #include "mse.h" 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate /* read a single line from stdin, replace the '\n' with '\0' */ 46*0Sstevel@tonic-gate char * 47*0Sstevel@tonic-gate gets(char *buf) 48*0Sstevel@tonic-gate { 49*0Sstevel@tonic-gate char *ptr = buf; 50*0Sstevel@tonic-gate ssize_t n; 51*0Sstevel@tonic-gate char *p; 52*0Sstevel@tonic-gate Uchar *bufend; 53*0Sstevel@tonic-gate rmutex_t *lk; 54*0Sstevel@tonic-gate 55*0Sstevel@tonic-gate FLOCKFILE(lk, stdin); 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate _SET_ORIENTATION_BYTE(stdin); 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate if (!(stdin->_flag & (_IOREAD | _IORW))) { 60*0Sstevel@tonic-gate errno = EBADF; 61*0Sstevel@tonic-gate FUNLOCKFILE(lk); 62*0Sstevel@tonic-gate return (0); 63*0Sstevel@tonic-gate } 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate if (stdin->_base == NULL) { 66*0Sstevel@tonic-gate if ((bufend = _findbuf(stdin)) == 0) { 67*0Sstevel@tonic-gate FUNLOCKFILE(lk); 68*0Sstevel@tonic-gate return (0); 69*0Sstevel@tonic-gate } 70*0Sstevel@tonic-gate } 71*0Sstevel@tonic-gate else 72*0Sstevel@tonic-gate bufend = _bufend(stdin); 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate for (;;) /* until get a '\n' */ 75*0Sstevel@tonic-gate { 76*0Sstevel@tonic-gate if (stdin->_cnt <= 0) /* empty buffer */ 77*0Sstevel@tonic-gate { 78*0Sstevel@tonic-gate if (__filbuf(stdin) != EOF) { 79*0Sstevel@tonic-gate stdin->_ptr--; /* put back the character */ 80*0Sstevel@tonic-gate stdin->_cnt++; 81*0Sstevel@tonic-gate } else if (ptr == buf) { /* never read anything */ 82*0Sstevel@tonic-gate FUNLOCKFILE(lk); 83*0Sstevel@tonic-gate return (0); 84*0Sstevel@tonic-gate } else 85*0Sstevel@tonic-gate break; /* nothing left to read */ 86*0Sstevel@tonic-gate } 87*0Sstevel@tonic-gate n = stdin->_cnt; 88*0Sstevel@tonic-gate if ((p = (char *)memccpy(ptr, (char *)stdin->_ptr, '\n', 89*0Sstevel@tonic-gate (size_t)n)) != 0) 90*0Sstevel@tonic-gate n = p - ptr; 91*0Sstevel@tonic-gate ptr += n; 92*0Sstevel@tonic-gate stdin->_cnt -= n; 93*0Sstevel@tonic-gate stdin->_ptr += n; 94*0Sstevel@tonic-gate if (_needsync(stdin, bufend)) 95*0Sstevel@tonic-gate _bufsync(stdin, bufend); 96*0Sstevel@tonic-gate if (p != 0) /* found a '\n' */ 97*0Sstevel@tonic-gate { 98*0Sstevel@tonic-gate ptr--; /* step back over the '\n' */ 99*0Sstevel@tonic-gate break; 100*0Sstevel@tonic-gate } 101*0Sstevel@tonic-gate } 102*0Sstevel@tonic-gate *ptr = '\0'; 103*0Sstevel@tonic-gate FUNLOCKFILE(lk); 104*0Sstevel@tonic-gate return (buf); 105*0Sstevel@tonic-gate } 106