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      1 /*	$NetBSD: fgetln.c,v 1.17 2017/06/08 15:59:45 uwe Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Chris Torek.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 __RCSID("$NetBSD: fgetln.c,v 1.17 2017/06/08 15:59:45 uwe Exp $");
     37 
     38 #include "namespace.h"
     39 
     40 #include <stdio.h>
     41 
     42 #include "reentrant.h"
     43 #include "local.h"
     44 
     45 #ifdef __weak_alias
     46 __weak_alias(fgetln,_fgetln)
     47 #endif
     48 
     49 /*
     50  * Get an input line.
     51  * This now uses getdelim(3) for a code reduction.
     52  * The upside is that strings are now always null-terminated, but relying
     53  * on this is non portable - better to use the POSIX getdelim(3) function.
     54  */
     55 char *
     56 fgetln(FILE *fp, size_t *lenp)
     57 {
     58 	char *p;
     59 
     60 	FLOCKFILE(fp);
     61 	p = __fgetstr(fp, lenp, '\n');
     62 	FUNLOCKFILE(fp);
     63 	return p;
     64 }
     65