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 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include "lint.h" 33 #include "file64.h" 34 #include "mtlib.h" 35 #include <sys/types.h> 36 #include <stdio.h> 37 #include <memory.h> 38 #include <thread.h> 39 #include <synch.h> 40 #include <limits.h> 41 #include "stdiom.h" 42 #include "mse.h" 43 44 int 45 puts(const char *ptr) 46 { 47 ssize_t ndone = 0L, n; 48 unsigned char *cptr, *bufend; 49 rmutex_t *lk; 50 size_t ptrlen; 51 size_t len = 0; 52 int c; 53 54 FLOCKFILE(lk, stdout); 55 56 _SET_ORIENTATION_BYTE(stdout); 57 58 if (_WRTCHK(stdout)) { 59 FUNLOCKFILE(lk); 60 return (EOF); 61 } 62 63 bufend = _bufend(stdout); 64 65 ptrlen = strlen(ptr) + 1; /* adding 1 for '\n' */ 66 for (; ; ptr += len, ptrlen -= len) { 67 while ((n = bufend - (cptr = stdout->_ptr)) <= 0) /* full buf */ 68 { 69 if (_xflsbuf(stdout) == EOF) { 70 FUNLOCKFILE(lk); 71 return (EOF); 72 } 73 } 74 /* 75 * n: number of available bytes in the buffer of stdout 76 * ptrlen: number of remaining bytes in 'ptr' string 77 * 78 * If all remaining bytes in 'ptr' can be copied into 79 * the buffer of stdout (ptrlen <= n), 'len' is set to 80 * 'ptrlen'. Otherwise, 'len' is set to 'n'. 81 * Then, copies 'len' bytes from 'ptr' to the buffer 82 * of stdout. 83 */ 84 len = (c = (ptrlen <= n)) ? ptrlen : n; 85 (void) memcpy(cptr, ptr, len); 86 stdout->_cnt -= len; 87 stdout->_ptr += len; 88 if (_needsync(stdout, bufend)) 89 _bufsync(stdout, bufend); 90 ndone += len; 91 if (c) { 92 /* 93 * All bytes in 'ptr' can be copied into 94 * the buffer of stdout. 95 * Terminate the buffer of stdout with '\n' 96 * and flush line buffer 97 */ 98 stdout->_ptr[-1] = '\n'; 99 if (stdout->_flag & (_IONBF | _IOLBF)) { 100 /* flush line */ 101 if (_xflsbuf(stdout) == EOF) { 102 FUNLOCKFILE(lk); 103 return (EOF); 104 } 105 } 106 FUNLOCKFILE(lk); 107 if (ndone <= INT_MAX) 108 return ((int)ndone); 109 else 110 return (EOF); 111 } 112 } 113 } 114