Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/cmp/cmp.c	Lines:	28	52	53.8 %
Date:	2017-11-07	Branches:	25	49	51.0 %


/*      $OpenBSD: cmp.c,v 1.16 2016/10/28 07:22:59 schwarze Exp $      */
/*      $NetBSD: cmp.c,v 1.7 1995/09/08 03:22:56 tls Exp $      */

/*
 * Copyright (c) 1987, 1990, 1993, 1994
 *	The Regents of the University of California.  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.
 * 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 <sys/types.h>
#include <sys/stat.h>

#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "extern.h"

int	lflag, sflag;

static void __dead usage(void);

int
main(int argc, char *argv[])
{
	struct stat sb1, sb2;
	off_t skip1, skip2;
	int ch, fd1, fd2, special;
	char *file1, *file2;

	if (pledge("stdio rpath flock cpath wpath", NULL) == -1)
		err(ERR_EXIT, "pledge");

	while ((ch = getopt(argc, argv, "ls")) != -1)
		switch (ch) {
		case 'l':		/* print all differences */
			lflag = 1;
			break;
		case 's':		/* silent run */
			sflag = 1;
			break;
		default:
			usage();
		}

	argv += optind;
	argc -= optind;

	if (lflag && sflag)
		errx(ERR_EXIT, "only one of -l and -s may be specified");

	if (argc < 2 || argc > 4)
		usage();

	/* Backward compatibility -- handle "-" meaning stdin. */
	special = 0;
	if (strcmp(file1 = argv[0], "-") == 0) {
		special = 1;
		fd1 = 0;
		file1 = "stdin";
	} else if ((fd1 = open(file1, O_RDONLY, 0)) < 0) {
		if (sflag)
			return ERR_EXIT;
		else
			err(ERR_EXIT, "%s", file1);
	}
	if (strcmp(file2 = argv[1], "-") == 0) {
		if (special) {
			if (sflag)
				return ERR_EXIT;
			else
				errx(ERR_EXIT,
					"standard input may only be specified once");
		}
		special = 1;
		fd2 = 0;
		file2 = "stdin";
	} else if ((fd2 = open(file2, O_RDONLY, 0)) < 0) {
		if (sflag)
			return ERR_EXIT;
		else
			err(ERR_EXIT, "%s", file2);
	}

	if (pledge("stdio flock rpath cpath wpath", NULL) == -1)
		err(ERR_EXIT, "pledge");

	skip1 = argc > 2 ? strtoll(argv[2], NULL, 0) : 0;
	skip2 = argc == 4 ? strtoll(argv[3], NULL, 0) : 0;

	if (!special) {
		if (fstat(fd1, &sb1)) {
			if (sflag)
				return ERR_EXIT;
			else
				err(ERR_EXIT, "%s", file1);
		}
		if (!S_ISREG(sb1.st_mode))
			special = 1;
		else {
			if (fstat(fd2, &sb2)) {
				if (sflag)
					return ERR_EXIT;
				else
					err(ERR_EXIT, "%s", file2);
			}
			if (!S_ISREG(sb2.st_mode))
				special = 1;
		}
	}

	if (special)
		c_special(fd1, file1, skip1, fd2, file2, skip2);
	else
		c_regular(fd1, file1, skip1, sb1.st_size,
		    fd2, file2, skip2, sb2.st_size);
	return 0;
}

static void __dead
usage(void)
{

	(void)fprintf(stderr,
	    "usage: cmp [-l | -s] file1 file2 [skip1 [skip2]]\n");
	exit(ERR_EXIT);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: cmp.c,v 1.16 2016/10/28 07:22:59 schwarze Exp $ */
2			/* $NetBSD: cmp.c,v 1.7 1995/09/08 03:22:56 tls Exp $ */
3
4			/*
5			* Copyright (c) 1987, 1990, 1993, 1994
6			* The Regents of the University of California. 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			* 3. Neither the name of the University nor the names of its contributors
17			* may be used to endorse or promote products derived from this software
18			* without specific prior written permission.
19			*
20			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30			* SUCH DAMAGE.
31			*/
32
33			#include <sys/types.h>
34			#include <sys/stat.h>
35
36			#include <err.h>
37			#include <fcntl.h>
38			#include <stdio.h>
39			#include <stdlib.h>
40			#include <string.h>
41			#include <unistd.h>
42
43			#include "extern.h"
44
45			int lflag, sflag;
46
47			static void __dead usage(void);
48
49			int
50			main(int argc, char *argv[])
51			{
52		11228	struct stat sb1, sb2;
53			off_t skip1, skip2;
54			int ch, fd1, fd2, special;
55			char file1, file2;
56
57	✗✓	5614	if (pledge("stdio rpath flock cpath wpath", NULL) == -1)
58			err(ERR_EXIT, "pledge");
59
60	✓✓	13246	while ((ch = getopt(argc, argv, "ls")) != -1)
61	✗✗✓	3816	switch (ch) {
62			case 'l': /* print all differences */
63			lflag = 1;
64			break;
65			case 's': /* silent run */
66			sflag = 1;
67			break;
68			default:
69			usage();
70			}
71
72		5614	argv += optind;
73		5614	argc -= optind;
74
75	✗✓	5614	if (lflag && sflag)
76			errx(ERR_EXIT, "only one of -l and -s may be specified");
77
78	✗✓	5614	if (argc < 2 \|\| argc > 4)
79			usage();
80
81			/* Backward compatibility -- handle "-" meaning stdin. */
82			special = 0;
83	✓✓	5614	if (strcmp(file1 = argv[0], "-") == 0) {
84			special = 1;
85			fd1 = 0;
86			file1 = "stdin";
87	✗✓	5614	} else if ((fd1 = open(file1, O_RDONLY, 0)) < 0) {
88			if (sflag)
89			return ERR_EXIT;
90			else
91			err(ERR_EXIT, "%s", file1);
92			}
93	✓✓	5614	if (strcmp(file2 = argv[1], "-") == 0) {
94	✗✓	39	if (special) {
95			if (sflag)
96			return ERR_EXIT;
97			else
98			errx(ERR_EXIT,
99			"standard input may only be specified once");
100			}
101			special = 1;
102			fd2 = 0;
103			file2 = "stdin";
104	✗✓	5614	} else if ((fd2 = open(file2, O_RDONLY, 0)) < 0) {
105			if (sflag)
106			return ERR_EXIT;
107			else
108			err(ERR_EXIT, "%s", file2);
109			}
110
111	✗✓	5614	if (pledge("stdio flock rpath cpath wpath", NULL) == -1)
112			err(ERR_EXIT, "pledge");
113
114	✗✓	11228	skip1 = argc > 2 ? strtoll(argv[2], NULL, 0) : 0;
115	✗✓	11228	skip2 = argc == 4 ? strtoll(argv[3], NULL, 0) : 0;
116
117	✓✓	5614	if (!special) {
118	✗✓	5569	if (fstat(fd1, &sb1)) {
119			if (sflag)
120			return ERR_EXIT;
121			else
122			err(ERR_EXIT, "%s", file1);
123			}
124	✗✓	5569	if (!S_ISREG(sb1.st_mode))
125			special = 1;
126			else {
127	✗✓	5569	if (fstat(fd2, &sb2)) {
128			if (sflag)
129			return ERR_EXIT;
130			else
131			err(ERR_EXIT, "%s", file2);
132			}
133	✓✓	5569	if (!S_ISREG(sb2.st_mode))
134		321	special = 1;
135			}
136			}
137
138	✓✓	5614	if (special)
139		366	c_special(fd1, file1, skip1, fd2, file2, skip2);
140			else
141		10496	c_regular(fd1, file1, skip1, sb1.st_size,
142		5248	fd2, file2, skip2, sb2.st_size);
143		4497	return 0;
144		4497	}
145
146			static void __dead
147			usage(void)
148			{
149
150			(void)fprintf(stderr,
151			"usage: cmp [-l \| -s] file1 file2 [skip1 [skip2]]\n");
152			exit(ERR_EXIT);
153			}