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 #include "lint.h" 31 #include "file64.h" 32 #include "mtlib.h" 33 #include <sys/types.h> 34 #include <stdio.h> 35 #include <memory.h> 36 #include <thread.h> 37 #include <synch.h> 38 #include <limits.h> 39 #include "stdiom.h" 40 #include "mse.h" 41 42 int 43 puts(const char *ptr) 44 { 45 ssize_t ndone = 0L, n; 46 unsigned char *cptr, *bufend; 47 rmutex_t *lk; 48 size_t ptrlen; 49 size_t len = 0; 50 int c; 51 52 FLOCKFILE(lk, stdout); 53 54 _SET_ORIENTATION_BYTE(stdout); 55 56 if (_WRTCHK(stdout)) { 57 FUNLOCKFILE(lk); 58 return (EOF); 59 } 60 61 bufend = _bufend(stdout); 62 63 ptrlen = strlen(ptr) + 1; /* adding 1 for '\n' */ 64 for (; ; ptr += len, ptrlen -= len) { 65 while ((n = bufend - (cptr = stdout->_ptr)) <= 0) /* full buf */ 66 { 67 if (_xflsbuf(stdout) == EOF) { 68 FUNLOCKFILE(lk); 69 return (EOF); 70 } 71 } 72 /* 73 * n: number of available bytes in the buffer of stdout 74 * ptrlen: number of remaining bytes in 'ptr' string 75 * 76 * If all remaining bytes in 'ptr' can be copied into 77 * the buffer of stdout (ptrlen <= n), 'len' is set to 78 * 'ptrlen'. Otherwise, 'len' is set to 'n'. 79 * Then, copies 'len' bytes from 'ptr' to the buffer 80 * of stdout. 81 */ 82 len = (c = (ptrlen <= n)) ? ptrlen : n; 83 (void) memcpy(cptr, ptr, len); 84 stdout->_cnt -= len; 85 stdout->_ptr += len; 86 if (_needsync(stdout, bufend)) 87 _bufsync(stdout, bufend); 88 ndone += len; 89 if (c) { 90 /* 91 * All bytes in 'ptr' can be copied into 92 * the buffer of stdout. 93 * Terminate the buffer of stdout with '\n' 94 * and flush line buffer 95 */ 96 stdout->_ptr[-1] = '\n'; 97 if (stdout->_flag & (_IONBF | _IOLBF)) { 98 /* flush line */ 99 if (_xflsbuf(stdout) == EOF) { 100 FUNLOCKFILE(lk); 101 return (EOF); 102 } 103 } 104 FUNLOCKFILE(lk); 105 if (ndone <= INT_MAX) 106 return ((int)ndone); 107 else 108 return (EOF); 109 } 110 } 111 } 112