StdLib/LibC/Stdio/fgetln.c

   1 /*  $NetBSD: fgetln.c,v 1.14 2004/05/10 16:47:11 drochner 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 #include  <LibConfig.h>
  35 #include <sys/EfiCdefs.h>
  36 #if defined(LIBC_SCCS) && !defined(lint)
  37 #if 0
  38 static char sccsid[] = "@(#)fgetline.c  8.1 (Berkeley) 6/4/93";
  39 #else
  40 __RCSID("$NetBSD: fgetln.c,v 1.14 2004/05/10 16:47:11 drochner Exp $");
  41 #endif
  42 #endif /* LIBC_SCCS and not lint */
  43
  44 #include "namespace.h"
  45
  46 #include <stdio.h>
  47
  48 #include "reentrant.h"
  49 #include "local.h"
  50
  51 #ifdef __weak_alias
  52 __weak_alias(fgetln,_fgetln)
  53 #endif
  54
  55 /*
  56  * Get an input line.  The returned pointer often (but not always)
  57  * points into a stdio buffer.  Fgetline does not alter the text of
  58  * the returned line (which is thus not a C string because it will
  59  * not necessarily end with '\0'), but does allow callers to modify
  60  * it if they wish.  Thus, we set __SMOD in case the caller does.
  61  */
  62 char *
  63 fgetln(FILE *fp, size_t *lenp)
  64 {
  65   char *cp;
  66
  67   FLOCKFILE(fp);
  68   cp = __fgetstr(fp, lenp, '\n');
  69   FUNLOCKFILE(fp);
  70   return cp;
  71 }