xref: /freebsd/lib/libc/stdio/fgetc.c (revision 5aa839c9e2c373275091b8bf529c1311d0b84d76)
1  /*-
2   * SPDX-License-Identifier: BSD-3-Clause
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  #if defined(LIBC_SCCS) && !defined(lint)
36  static char sccsid[] = "@(#)fgetc.c	8.1 (Berkeley) 6/4/93";
37  #endif /* LIBC_SCCS and not lint */
38  #include <sys/cdefs.h>
39  __FBSDID("$FreeBSD$");
40  
41  #include "namespace.h"
42  #include <stdio.h>
43  #include "un-namespace.h"
44  #include "libc_private.h"
45  #include "local.h"
46  
47  int
48  fgetc(FILE *fp)
49  {
50  	int retval;
51  	FLOCKFILE_CANCELSAFE(fp);
52  	/* Orientation set by __sgetc() when buffer is empty. */
53  	/* ORIENT(fp, -1); */
54  	retval = __sgetc(fp);
55  	FUNLOCKFILE_CANCELSAFE();
56  	return (retval);
57  }
58