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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/compress/nullopen.c	Lines:	0	49	0.0 %
Date:	2016-12-06	Branches:	0	24	0.0 %


/*	$OpenBSD: nullopen.c,v 1.5 2015/08/20 22:32:41 deraadt Exp $	*/

/*
 * Copyright (c) 2003 Can Erkin Acar
 * Copyright (c) 1997 Michael Shalayeff
 * All rights reserved.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include "compress.h"

typedef struct {
	off_t 	  total_in;
	off_t 	  total_out;
	int   	  fd;
	int       gotmagic;
	char	  mode;
} null_stream;

char null_magic[2];


void *
null_open(int fd, const char *mode, char *name, int bits,
    u_int32_t mtime, int gotmagic)
{
	null_stream *s;

	if (fd < 0 || !mode)
		return NULL;

	if ((mode[0] != 'r' && mode[0] != 'w') || mode[1] != '\0') {
		errno = EINVAL;
		return NULL;
	}

	if ((s = calloc(1, sizeof(null_stream))) == NULL)
		return NULL;

	s->fd = fd;
	s->gotmagic = gotmagic;
	s->total_in = s->total_out = 0;
	s->mode = mode[0];

	return s;
}

int
null_close(void *cookie, struct z_info *info, const char *name, struct stat *sb)
{
	null_stream *s = (null_stream*) cookie;
	int err = 0;

	if (s == NULL)
		return -1;


	if (info != NULL) {
		info->mtime = 0;
		info->crc =  (u_int32_t)-1;
		info->hlen = 0;
		info->total_in = (off_t) s->total_in;
		info->total_out = (off_t) s->total_out;
	}

	setfile(name, s->fd, sb);
	err = close(s->fd);

	free(s);

	return err;
}

int
null_flush(void *cookie, int flush)
{
	null_stream *s = (null_stream*)cookie;

	if (s == NULL || s->mode != 'w') {
		errno = EBADF;
		return (-1);
	}

	return 0;
}

int
null_read(void *cookie, char *buf, int len)
{
	null_stream *s = (null_stream*)cookie;

	if (s == NULL) {
		errno = EBADF;
		return (-1);
	}
	if (s->gotmagic) {
		if (len < 2) {
			errno = EBADF;
			return (-1);
		}

		buf[0] = null_magic[0];
		buf[1] = null_magic[1];
		s->gotmagic = 0;

		return (2);
	}

	return read(s->fd, buf, len);
}

int
null_write(void *cookie, const char *buf, int len)
{
	null_stream *s = (null_stream*)cookie;

	if (s == NULL) {
		errno = EBADF;
		return (-1);
	}

	return write(s->fd, buf, len);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: nullopen.c,v 1.5 2015/08/20 22:32:41 deraadt Exp $ */
2
3			/*
4			* Copyright (c) 2003 Can Erkin Acar
5			* Copyright (c) 1997 Michael Shalayeff
6			* All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			* 1. Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			*
17			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18			* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19			* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27			* SUCH DAMAGE.
28			*
29			*/
30
31			#include <sys/types.h>
32			#include <stdio.h>
33			#include <stdlib.h>
34			#include <errno.h>
35			#include <unistd.h>
36			#include "compress.h"
37
38			typedef struct {
39			off_t total_in;
40			off_t total_out;
41			int fd;
42			int gotmagic;
43			char mode;
44			} null_stream;
45
46			char null_magic[2];
47
48
49			void *
50			null_open(int fd, const char mode, char name, int bits,
51			u_int32_t mtime, int gotmagic)
52			{
53			null_stream *s;
54
55			if (fd < 0 \|\| !mode)
56			return NULL;
57
58			if ((mode[0] != 'r' && mode[0] != 'w') \|\| mode[1] != '\0') {
59			errno = EINVAL;
60			return NULL;
61			}
62
63			if ((s = calloc(1, sizeof(null_stream))) == NULL)
64			return NULL;
65
66			s->fd = fd;
67			s->gotmagic = gotmagic;
68			s->total_in = s->total_out = 0;
69			s->mode = mode[0];
70
71			return s;
72			}
73
74			int
75			null_close(void cookie, struct z_info info, const char name, struct stat sb)
76			{
77			null_stream s = (null_stream) cookie;
78			int err = 0;
79
80			if (s == NULL)
81			return -1;
82
83
84			if (info != NULL) {
85			info->mtime = 0;
86			info->crc = (u_int32_t)-1;
87			info->hlen = 0;
88			info->total_in = (off_t) s->total_in;
89			info->total_out = (off_t) s->total_out;
90			}
91
92			setfile(name, s->fd, sb);
93			err = close(s->fd);
94
95			free(s);
96
97			return err;
98			}
99
100			int
101			null_flush(void *cookie, int flush)
102			{
103			null_stream s = (null_stream)cookie;
104
105			if (s == NULL \|\| s->mode != 'w') {
106			errno = EBADF;
107			return (-1);
108			}
109
110			return 0;
111			}
112
113			int
114			null_read(void cookie, char buf, int len)
115			{
116			null_stream s = (null_stream)cookie;
117
118			if (s == NULL) {
119			errno = EBADF;
120			return (-1);
121			}
122			if (s->gotmagic) {
123			if (len < 2) {
124			errno = EBADF;
125			return (-1);
126			}
127
128			buf[0] = null_magic[0];
129			buf[1] = null_magic[1];
130			s->gotmagic = 0;
131
132			return (2);
133			}
134
135			return read(s->fd, buf, len);
136			}
137
138			int
139			null_write(void cookie, const char buf, int len)
140			{
141			null_stream s = (null_stream)cookie;
142
143			if (s == NULL) {
144			errno = EBADF;
145			return (-1);
146			}
147
148			return write(s->fd, buf, len);
149			}