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 #include "synonyms.h" 34 #include "file64.h" 35 #include "mtlib.h" 36 #include <sys/types.h> 37 #include <stdio.h> 38 #include <memory.h> 39 #include <thread.h> 40 #include <synch.h> 41 #include <limits.h> 42 #include "stdiom.h" 43 #include "mse.h" 44 45 int 46 puts(const char *ptr) 47 { 48 ssize_t ndone = 0L, n; 49 unsigned char *cptr, *bufend; 50 rmutex_t *lk; 51 size_t ptrlen; 52 size_t len = 0; 53 int c; 54 55 FLOCKFILE(lk, stdout); 56 57 _SET_ORIENTATION_BYTE(stdout); 58 59 if (_WRTCHK(stdout)) { 60 FUNLOCKFILE(lk); 61 return (EOF); 62 } 63 64 bufend = _bufend(stdout); 65 66 ptrlen = strlen(ptr) + 1; /* adding 1 for '\n' */ 67 for (; ; ptr += len, ptrlen -= len) { 68 while ((n = bufend - (cptr = stdout->_ptr)) <= 0) /* full buf */ 69 { 70 if (_xflsbuf(stdout) == EOF) { 71 FUNLOCKFILE(lk); 72 return (EOF); 73 } 74 } 75 /* 76 * n: number of available bytes in the buffer of stdout 77 * ptrlen: number of remaining bytes in 'ptr' string 78 * 79 * If all remaining bytes in 'ptr' can be copied into 80 * the buffer of stdout (ptrlen <= n), 'len' is set to 81 * 'ptrlen'. Otherwise, 'len' is set to 'n'. 82 * Then, copies 'len' bytes from 'ptr' to the buffer 83 * of stdout. 84 */ 85 len = (c = (ptrlen <= n)) ? ptrlen : n; 86 (void) memcpy(cptr, ptr, len); 87 stdout->_cnt -= len; 88 stdout->_ptr += len; 89 if (_needsync(stdout, bufend)) 90 _bufsync(stdout, bufend); 91 ndone += len; 92 if (c) { 93 /* 94 * All bytes in 'ptr' can be copied into 95 * the buffer of stdout. 96 * Terminate the buffer of stdout with '\n' 97 * and flush line buffer 98 */ 99 stdout->_ptr[-1] = '\n'; 100 if (stdout->_flag & (_IONBF | _IOLBF)) { 101 /* flush line */ 102 if (_xflsbuf(stdout) == EOF) { 103 FUNLOCKFILE(lk); 104 return (EOF); 105 } 106 } 107 FUNLOCKFILE(lk); 108 if (ndone <= INT_MAX) 109 return ((int)ndone); 110 else 111 return (EOF); 112 } 113 } 114 } 115