Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libc/stdio/stdio.c	Lines:	16	19	84.2 %
Date:	2017-11-07	Branches:	3	6	50.0 %


/*	$OpenBSD: stdio.c,v 1.10 2016/09/21 04:38:56 guenther Exp $ */
/*-
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Chris Torek.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <stdio.h>
#include <unistd.h>
#include "local.h"

/*
 * Small standard I/O/seek/close functions.
 * These maintain the `known seek offset' for seek optimisation.
 */
int
__sread(void *cookie, char *buf, int n)
{
	FILE *fp = cookie;
	int ret;

	ret = read(fp->_file, buf, n);
	/* if the read succeeded, update the current offset */
	if (ret >= 0)
		fp->_offset += ret;
	else
		fp->_flags &= ~__SOFF;	/* paranoia */
	return (ret);
}

int
__swrite(void *cookie, const char *buf, int n)
{
	FILE *fp = cookie;

	if (fp->_flags & __SAPP)
		(void) lseek(fp->_file, 0, SEEK_END);
	fp->_flags &= ~__SOFF;	/* in case FAPPEND mode is set */
	return (write(fp->_file, buf, n));
}

fpos_t
__sseek(void *cookie, fpos_t offset, int whence)
{
	FILE *fp = cookie;
	off_t ret;

	ret = lseek(fp->_file, offset, whence);
	if (ret == -1)
		fp->_flags &= ~__SOFF;
	else {
		fp->_flags |= __SOFF;
		fp->_offset = ret;
	}
	return (ret);
}

int
__sclose(void *cookie)
{
	return (close(((FILE *)cookie)->_file));
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: stdio.c,v 1.10 2016/09/21 04:38:56 guenther Exp $ */
2			/*-
3			* Copyright (c) 1990, 1993
4			* The Regents of the University of California. All rights reserved.
5			*
6			* This code is derived from software contributed to Berkeley by
7			* Chris Torek.
8			*
9			* Redistribution and use in source and binary forms, with or without
10			* modification, are permitted provided that the following conditions
11			* are met:
12			* 1. Redistributions of source code must retain the above copyright
13			* notice, this list of conditions and the following disclaimer.
14			* 2. Redistributions in binary form must reproduce the above copyright
15			* notice, this list of conditions and the following disclaimer in the
16			* documentation and/or other materials provided with the distribution.
17			* 3. Neither the name of the University nor the names of its contributors
18			* may be used to endorse or promote products derived from this software
19			* without specific prior written permission.
20			*
21			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31			* SUCH DAMAGE.
32			*/
33
34			#include <stdio.h>
35			#include <unistd.h>
36			#include "local.h"
37
38			/*
39			* Small standard I/O/seek/close functions.
40			* These maintain the `known seek offset' for seek optimisation.
41			*/
42			int
43			__sread(void cookie, char buf, int n)
44			{
45		325692	FILE *fp = cookie;
46			int ret;
47
48		162846	ret = read(fp->_file, buf, n);
49			/* if the read succeeded, update the current offset */
50	✓✗	162846	if (ret >= 0)
51		162846	fp->_offset += ret;
52			else
53			fp->_flags &= ~__SOFF; /* paranoia */
54		162846	return (ret);
55			}
56
57			int
58			__swrite(void cookie, const char buf, int n)
59			{
60		68006	FILE *fp = cookie;
61
62	✗✓	34003	if (fp->_flags & __SAPP)
63			(void) lseek(fp->_file, 0, SEEK_END);
64		34003	fp->_flags &= ~__SOFF; /* in case FAPPEND mode is set */
65		34003	return (write(fp->_file, buf, n));
66			}
67
68			fpos_t
69			__sseek(void *cookie, fpos_t offset, int whence)
70			{
71		8039940	FILE *fp = cookie;
72			off_t ret;
73
74		4019970	ret = lseek(fp->_file, offset, whence);
75	✗✓	4019970	if (ret == -1)
76			fp->_flags &= ~__SOFF;
77			else {
78		4019970	fp->_flags \|= __SOFF;
79		4019970	fp->_offset = ret;
80			}
81		4019970	return (ret);
82			}
83
84			int
85			__sclose(void *cookie)
86			{
87		7891814	return (close(((FILE *)cookie)->_file));
88			}