Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/cmp/regular.c	Lines:	26	35	74.3 %
Date:	2017-11-07	Branches:	19	28	67.9 %


/*      $OpenBSD: regular.c,v 1.12 2015/02/06 23:21:59 millert Exp $      */
/*      $NetBSD: regular.c,v 1.2 1995/09/08 03:22:59 tls Exp $      */

/*-
 * Copyright (c) 1991, 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/mman.h>
#include <sys/stat.h>

#include <err.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "extern.h"

#define	MINIMUM(a, b)	(((a) < (b)) ? (a) : (b))

void
c_regular(int fd1, char *file1, off_t skip1, off_t len1,
    int fd2, char *file2, off_t skip2, off_t len2)
{
	u_char ch, *p1, *p2;
	off_t byte, length, line;
	int dfound;

	if (sflag && len1 != len2)
		exit(1);

	if (skip1 > len1)
		eofmsg(file1);
	len1 -= skip1;
	if (skip2 > len2)
		eofmsg(file2);
	len2 -= skip2;

	length = MINIMUM(len1, len2);
	if (length > SIZE_MAX) {
	mmap_failed:
		c_special(fd1, file1, skip1, fd2, file2, skip2);
		return;
	}

	if ((p1 = mmap(NULL, (size_t)length, PROT_READ,
	    MAP_PRIVATE, fd1, skip1)) == MAP_FAILED)
		goto mmap_failed;
	if ((p2 = mmap(NULL, (size_t)length, PROT_READ,
	    MAP_PRIVATE, fd2, skip2)) == MAP_FAILED) {
		munmap(p1, (size_t)length);
		goto mmap_failed;
	}
	if (length) {
		madvise(p1, length, MADV_SEQUENTIAL);
		madvise(p2, length, MADV_SEQUENTIAL);
	}

	dfound = 0;
	for (byte = line = 1; length--; ++p1, ++p2, ++byte) {
		if ((ch = *p1) != *p2) {
			if (lflag) {
				dfound = 1;
				(void)printf("%6lld %3o %3o\n", (long long)byte,
				    ch, *p2);
			} else
				diffmsg(file1, file2, byte, line);
				/* NOTREACHED */
		}
		if (ch == '\n')
			++line;
	}

	if (len1 != len2)
		eofmsg (len1 > len2 ? file2 : file1);
	if (dfound)
		exit(DIFF_EXIT);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: regular.c,v 1.12 2015/02/06 23:21:59 millert Exp $ */
2			/* $NetBSD: regular.c,v 1.2 1995/09/08 03:22:59 tls Exp $ */
3
4			/*-
5			* Copyright (c) 1991, 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/mman.h>
34			#include <sys/stat.h>
35
36			#include <err.h>
37			#include <stdint.h>
38			#include <stdlib.h>
39			#include <stdio.h>
40			#include <string.h>
41
42			#include "extern.h"
43
44			#define MINIMUM(a, b) (((a) < (b)) ? (a) : (b))
45
46			void
47			c_regular(int fd1, char *file1, off_t skip1, off_t len1,
48			int fd2, char *file2, off_t skip2, off_t len2)
49			{
50			u_char ch, p1, p2;
51			off_t byte, length, line;
52			int dfound;
53
54	✓✓✗✓	13955	if (sflag && len1 != len2)
55			exit(1);
56
57	✗✓	5248	if (skip1 > len1)
58			eofmsg(file1);
59		5248	len1 -= skip1;
60	✗✓	5248	if (skip2 > len2)
61			eofmsg(file2);
62		5248	len2 -= skip2;
63
64		5248	length = MINIMUM(len1, len2);
65	✗✓	5248	if (length > SIZE_MAX) {
66			mmap_failed:
67		83	c_special(fd1, file1, skip1, fd2, file2, skip2);
68		83	return;
69			}
70
71	✓✓	10496	if ((p1 = mmap(NULL, (size_t)length, PROT_READ,
72		5248	MAP_PRIVATE, fd1, skip1)) == MAP_FAILED)
73			goto mmap_failed;
74	✗✓	10330	if ((p2 = mmap(NULL, (size_t)length, PROT_READ,
75		5165	MAP_PRIVATE, fd2, skip2)) == MAP_FAILED) {
76			munmap(p1, (size_t)length);
77			goto mmap_failed;
78			}
79	✓✗	5165	if (length) {
80		5165	madvise(p1, length, MADV_SEQUENTIAL);
81		5165	madvise(p2, length, MADV_SEQUENTIAL);
82		5165	}
83
84			dfound = 0;
85	✓✓	2415868598	for (byte = line = 1; length--; ++p1, ++p2, ++byte) {
86	✓✓	1207930243	if ((ch = p1) != p2) {
87	✗✓	1109	if (lflag) {
88			dfound = 1;
89			(void)printf("%6lld %3o %3o\n", (long long)byte,
90			ch, *p2);
91			} else
92		1109	diffmsg(file1, file2, byte, line);
93			/* NOTREACHED */
94			}
95	✓✓	1207929134	if (ch == '\n')
96		7255252	++line;
97			}
98
99	✗✓	4056	if (len1 != len2)
100			eofmsg (len1 > len2 ? file2 : file1);
101	✗✓	4056	if (dfound)
102			exit(DIFF_EXIT);
103		8195	}