10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*6812Sraf * Common Development and Distribution License (the "License").
6*6812Sraf * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
21*6812Sraf
220Sstevel@tonic-gate /*
23*6812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
240Sstevel@tonic-gate * Use is subject to license terms.
250Sstevel@tonic-gate */
260Sstevel@tonic-gate
270Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */
280Sstevel@tonic-gate /* All Rights Reserved */
290Sstevel@tonic-gate
30*6812Sraf #pragma ident "%Z%%M% %I% %E% SMI"
310Sstevel@tonic-gate
32*6812Sraf #include "lint.h"
330Sstevel@tonic-gate #include "file64.h"
340Sstevel@tonic-gate #include "mtlib.h"
350Sstevel@tonic-gate #include <stdio.h>
360Sstevel@tonic-gate #include <memory.h>
370Sstevel@tonic-gate #include <errno.h>
380Sstevel@tonic-gate #include <thread.h>
390Sstevel@tonic-gate #include <synch.h>
400Sstevel@tonic-gate #include <sys/types.h>
410Sstevel@tonic-gate #include "stdiom.h"
420Sstevel@tonic-gate #include "mse.h"
430Sstevel@tonic-gate
440Sstevel@tonic-gate /* read size-max line from stream, including '\n' */
450Sstevel@tonic-gate char *
fgets(char * buf,int size,FILE * iop)460Sstevel@tonic-gate fgets(char *buf, int size, FILE *iop)
470Sstevel@tonic-gate {
480Sstevel@tonic-gate char *ptr = buf;
490Sstevel@tonic-gate int n;
500Sstevel@tonic-gate Uchar *bufend;
510Sstevel@tonic-gate char *p;
520Sstevel@tonic-gate rmutex_t *lk;
530Sstevel@tonic-gate
540Sstevel@tonic-gate FLOCKFILE(lk, iop);
550Sstevel@tonic-gate
560Sstevel@tonic-gate _SET_ORIENTATION_BYTE(iop);
570Sstevel@tonic-gate
580Sstevel@tonic-gate if (!(iop->_flag & (_IOREAD | _IORW))) {
590Sstevel@tonic-gate errno = EBADF;
600Sstevel@tonic-gate FUNLOCKFILE(lk);
610Sstevel@tonic-gate return (NULL);
620Sstevel@tonic-gate }
630Sstevel@tonic-gate
640Sstevel@tonic-gate if (iop->_base == NULL) {
650Sstevel@tonic-gate if ((bufend = _findbuf(iop)) == NULL) {
660Sstevel@tonic-gate FUNLOCKFILE(lk);
670Sstevel@tonic-gate return (NULL);
680Sstevel@tonic-gate }
690Sstevel@tonic-gate }
700Sstevel@tonic-gate else
710Sstevel@tonic-gate bufend = _bufend(iop);
720Sstevel@tonic-gate
730Sstevel@tonic-gate size--; /* room for '\0' */
740Sstevel@tonic-gate while (size > 0) {
750Sstevel@tonic-gate /* empty buffer */
760Sstevel@tonic-gate if (iop->_cnt <= 0) {
770Sstevel@tonic-gate if (__filbuf(iop) != EOF) {
780Sstevel@tonic-gate iop->_ptr--; /* put back the character */
790Sstevel@tonic-gate iop->_cnt++;
800Sstevel@tonic-gate } else if (ptr == buf) { /* never read anything */
810Sstevel@tonic-gate FUNLOCKFILE(lk);
820Sstevel@tonic-gate return (NULL);
830Sstevel@tonic-gate } else
840Sstevel@tonic-gate break; /* nothing left to read */
850Sstevel@tonic-gate }
860Sstevel@tonic-gate n = (int)(size < iop->_cnt ? size : iop->_cnt);
870Sstevel@tonic-gate if ((p = memccpy(ptr, (char *)iop->_ptr, '\n',
880Sstevel@tonic-gate (size_t)n)) != NULL)
890Sstevel@tonic-gate n = (int)(p - ptr);
900Sstevel@tonic-gate ptr += n;
910Sstevel@tonic-gate iop->_cnt -= n;
920Sstevel@tonic-gate iop->_ptr += n;
930Sstevel@tonic-gate if (_needsync(iop, bufend))
940Sstevel@tonic-gate _bufsync(iop, bufend);
950Sstevel@tonic-gate if (p != NULL)
960Sstevel@tonic-gate break; /* newline found */
970Sstevel@tonic-gate size -= n;
980Sstevel@tonic-gate }
990Sstevel@tonic-gate FUNLOCKFILE(lk);
1000Sstevel@tonic-gate *ptr = '\0';
1010Sstevel@tonic-gate return (buf);
1020Sstevel@tonic-gate }
103