SUBDIR= add_route arp at backup btrace \
cawf cdprobe \
- ci cleantmp cmp co \
+ ci cleantmp co \
compress crc cron crontab \
decomp16 DESCRIBE devmand devsize dhcpd \
dhrystone diff diskctl \
+++ /dev/null
-PROG= cmp
-MAN=
-
-.include <bsd.prog.mk>
+++ /dev/null
-/* cmp - compare two files Author: Kees J. Bot. */
-
-#include <sys/types.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-
-void fatal(char *label);
-int cmp(int fd1, int fd2);
-void Usage(void);
-int main(int argc, char **argv);
-
-#define BLOCK 4096
-
-static int loud = 0, silent = 0;
-static char *name1, *name2;
-
-int main(argc, argv)
-int argc;
-char **argv;
-{
- int fd1, fd2;
-
- /* Process the '-l' or '-s' option. */
- while (argc > 1 && argv[1][0] == '-' && argv[1][1] != 0) {
- if (argv[1][2] != 0) Usage();
-
- switch (argv[1][1]) {
- case '-':
- /* '--': no-op option. */
- break;
- case 'l':
- loud = 1;
- break;
- case 's':
- silent = 1;
- break;
- default:
- Usage();
- }
- argc--;
- argv++;
- }
- if (argc != 3) Usage();
-
- /* Open the first file, '-' means standard input. */
- if (argv[1][0] == '-' && argv[1][1] == 0) {
- name1 = "stdin";
- fd1 = 0;
- } else {
- name1 = argv[1];
- if ((fd1 = open(name1, 0)) < 0) fatal(name1);
- }
-
- /* Second file likewise. */
- if (argv[2][0] == '-' && argv[2][1] == 0) {
- name2 = "stdin";
- fd2 = 0;
- } else {
- name2 = argv[2];
- if ((fd2 = open(name2, 0)) < 0) fatal(name2);
- }
-
- exit(cmp(fd1, fd2));
-}
-
-int cmp(fd1, fd2)
-int fd1, fd2;
-{
- static char buf1[BLOCK], buf2[BLOCK];
- int n1 = 0, n2 = 0, i1 = 0, i2 = 0, c1, c2;
- off_t pos = 0, line = 1;
- int eof = 0, differ = 0;
-
- for (;;) {
- if (i1 == n1) {
- pos += n1;
-
- if ((n1 = read(fd1, buf1, sizeof(buf1))) <= 0) {
- if (n1 < 0) fatal(name1);
- eof |= 1;
- }
- i1 = 0;
- }
- if (i2 == n2) {
- if ((n2 = read(fd2, buf2, sizeof(buf2))) <= 0) {
- if (n2 < 0) fatal(name2);
- eof |= 2;
- }
- i2 = 0;
- }
- if (eof != 0) break;
-
- c1 = buf1[i1++];
- c2 = buf2[i2++];
-
- if (c1 != c2) {
- if (!loud) {
- if (!silent) {
- printf("%s %s differ: char %d, line %d\n",
- name1, name2, pos + i1, line);
- }
- return(1);
- }
- printf("%10d %3o %3o\n", pos + i1, c1 & 0xFF, c2 & 0xFF);
- differ = 1;
- }
- if (c1 == '\n') line++;
- }
- if (eof == (1 | 2)) return(differ);
- if (!silent) fprintf(stderr, "cmp: EOF on %s\n", eof == 1 ? name1 : name2);
- return(1);
-}
-
-void fatal(label)
-char *label;
-{
- if (!silent) fprintf(stderr, "cmp: %s: %s\n", label, strerror(errno));
- exit(2);
-}
-
-void Usage()
-{
- fprintf(stderr, "Usage: cmp [-l | -s] file1 file2\n");
- exit(2);
-}
MAN= at.1 \
bsfilt.1 cawf.1 chgrp.1 \
- cmp.1 compress.1 \
+ compress.1 \
crc.1 crontab.1 \
dhrystone.1 dosdir.1 dosread.1 doswrite.1 \
eject.1 \
+++ /dev/null
-.TH CMP 1
-.SH NAME
-cmp \- compare two files
-.SH SYNOPSIS
-\fBcmp\fR [\fB\-ls\fR] \fIfile1 file2\fR
-.br
-.de FL
-.TP
-\\fB\\$1\\fR
-\\$2
-..
-.de EX
-.TP 20
-\\fB\\$1\\fR
-# \\$2
-..
-.SH OPTIONS
-.TP 5
-.B \-l
-# Loud mode. Print bytes that differ (in octal)
-.TP 5
-.B \-s
-# Silent mode. Print nothing, just return exit status
-.SH EXAMPLES
-.TP 20
-.B cmp file1 file2
-# Tell whether the files are the same
-.TP 20
-.B cmp \-l file1 file2
-# Print all corresponding bytes that differ
-.SH DESCRIPTION
-.PP
-Two files are compared.
-If they are identical, exit status 0 is returned.
-If they differ, exit status 1 is returned.
-If the files cannot be opened, exit status 2 is returned.
-If one of the file arguments is \-, then
-\fIstdin\fR is compared to
-the other file.
-.SH "SEE ALSO"
-.BR comm (1),
-.BR diff (1).
SUBDIR= asa \
banner basename \
bzip2 bzip2recover cal calendar \
- checknr chpass cksum col colcrt colrm \
+ checknr chpass cksum cmp col colcrt colrm \
column comm csplit ctags cut \
deroff dirname du \
env expand \
--- /dev/null
+# @(#)Makefile 8.1 (Berkeley) 6/6/93
+# $NetBSD: Makefile,v 1.4 1997/01/09 20:18:26 tls Exp $
+
+PROG= cmp
+SRCS= cmp.c misc.c regular.c special.c
+
+.include <bsd.prog.mk>
--- /dev/null
+.\" $NetBSD: cmp.1,v 1.9 2003/08/07 11:13:21 agc Exp $
+.\"
+.\" Copyright (c) 1987, 1990, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the Institute of Electrical and Electronics Engineers, Inc.
+.\"
+.\" 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.
+.\"
+.\" @(#)cmp.1 8.1 (Berkeley) 6/6/93
+.\"
+.Dd June 6, 1993
+.Dt CMP 1
+.Os
+.Sh NAME
+.Nm cmp
+.Nd compare two files
+.Sh SYNOPSIS
+.Nm
+.Op Fl l | Fl s
+.Ar file1 file2
+.Op Ar skip1 Op Ar skip2
+.Sh DESCRIPTION
+The cmp utility compares two files of any type and writes the results
+to the standard output.
+By default,
+.Nm
+is silent if the files are the same; if they differ, the byte
+and line number at which the first difference occurred is reported.
+.Pp
+Bytes and lines are numbered beginning with one.
+.Pp
+The following options are available:
+.Bl -tag -width flag
+.It Fl l
+Print the byte number (decimal) and the differing
+byte values (octal) for each difference.
+.It Fl s
+Print nothing for differing files; return exit
+status only.
+.El
+.Pp
+The optional arguments
+.Ar skip1
+and
+.Ar skip2
+are the byte offsets from the beginning of
+.Ar file1
+and
+.Ar file2 ,
+respectively, where the comparison will begin.
+The offset is decimal by default, but may be expressed as an hexadecimal
+or octal value by preceding it with a leading ``0x'' or ``0''.
+.Pp
+The
+.Nm
+utility exits with one of the following values:
+.Bl -tag -width 4n
+.It 0
+The files are identical.
+.It 1
+The files are different; this includes the case
+where one file is identical to the first part of
+the other.
+In the latter case, if the
+.Fl s
+option has not been specified,
+.Nm
+writes to standard output that EOF was reached in the shorter
+file (before any differences were found).
+.It \*[Gt]1
+An error occurred.
+.El
+.Sh SEE ALSO
+.Xr diff 1 ,
+.Xr diff3 1
+.Sh STANDARDS
+The
+.Nm
+utility is expected to be
+.St -p1003.2
+compatible.
--- /dev/null
+/* $NetBSD: cmp.c,v 1.18 2011/08/29 14:14:11 joerg 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/cdefs.h>
+#ifndef lint
+__COPYRIGHT("@(#) Copyright (c) 1987, 1990, 1993, 1994\
+ The Regents of the University of California. All rights reserved.");
+#endif /* not lint */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)cmp.c 8.3 (Berkeley) 4/2/94";
+#else
+__RCSID("$NetBSD: cmp.c,v 1.18 2011/08/29 14:14:11 joerg Exp $");
+#endif
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <locale.h>
+
+#include "extern.h"
+
+int lflag, sflag;
+
+__dead static void usage(void);
+
+int
+main(int argc, char *argv[])
+{
+ struct stat sb1, sb2;
+ off_t skip1 = 0, skip2 = 0;
+ int ch, fd1, fd2, special;
+ const char *file1, *file2;
+
+ setlocale(LC_ALL, "");
+
+ while ((ch = getopt(argc, argv, "ls")) != -1)
+ switch (ch) {
+ case 'l': /* print all differences */
+ lflag = 1;
+ break;
+ case 's': /* silent run */
+ sflag = 1;
+ break;
+ case '?':
+ 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)
+ warn("%s", file1);
+ exit(ERR_EXIT);
+ }
+ if (strcmp(file2 = argv[1], "-") == 0) {
+ if (special)
+ 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)
+ warn("%s", file2);
+ exit(ERR_EXIT);
+ }
+
+ if (argc > 2) {
+ char *ep;
+
+ errno = 0;
+ skip1 = strtoq(argv[2], &ep, 0);
+ if (errno || ep == argv[2])
+ usage();
+
+ if (argc == 4) {
+ skip2 = strtoq(argv[3], &ep, 0);
+ if (errno || ep == argv[3])
+ usage();
+ }
+ }
+
+ if (!special) {
+ if (fstat(fd1, &sb1))
+ err(ERR_EXIT, "%s", file1);
+ if (!S_ISREG(sb1.st_mode))
+ special = 1;
+ else {
+ if (fstat(fd2, &sb2))
+ 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);
+ exit(0);
+}
+
+static void
+usage(void)
+{
+
+ (void)fprintf(stderr,
+ "usage: cmp [-l | -s] file1 file2 [skip1 [skip2]]\n");
+ exit(ERR_EXIT);
+}
--- /dev/null
+/* $NetBSD: extern.h,v 1.9 2011/08/29 14:14:11 joerg 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.
+ *
+ * @(#)extern.h 8.3 (Berkeley) 4/2/94
+ */
+
+#define OK_EXIT 0
+#define DIFF_EXIT 1
+#define ERR_EXIT 2 /* error exit code */
+
+void c_regular(int, const char *, off_t, off_t, int, const char *, off_t, off_t);
+void c_special(int, const char *, off_t, int, const char *, off_t);
+__dead void diffmsg(const char *, const char *, off_t, off_t);
+__dead void eofmsg(const char *, off_t, off_t);
+__dead void errmsg(const char *, off_t, off_t);
+
+extern int lflag, sflag;
--- /dev/null
+/* $NetBSD: misc.c,v 1.12 2009/04/11 12:16:12 lukem 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/cdefs.h>
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)misc.c 8.3 (Berkeley) 4/2/94";
+#else
+__RCSID("$NetBSD: misc.c,v 1.12 2009/04/11 12:16:12 lukem Exp $");
+#endif
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "extern.h"
+
+void
+errmsg(const char *file, off_t byte, off_t line)
+{
+ if (lflag)
+ err(ERR_EXIT, "%s: char %lld, line %lld", file,
+ (long long)byte, (long long)line);
+ else
+ err(ERR_EXIT, "%s", file);
+}
+
+void
+eofmsg(const char *file, off_t byte, off_t line)
+{
+ if (!sflag) {
+ if (!lflag)
+ warnx("EOF on %s", file);
+ else {
+ if (line > 0)
+ warnx("EOF on %s: char %lld, line %lld",
+ file, (long long)byte, (long long)line);
+ else
+ warnx("EOF on %s: char %lld",
+ file, (long long)byte);
+ }
+ }
+ exit(DIFF_EXIT);
+}
+
+void
+diffmsg(const char *file1, const char *file2, off_t byte, off_t line)
+{
+ if (!sflag)
+ (void)printf("%s %s differ: char %lld, line %lld\n",
+ file1, file2, (long long)byte, (long long)line);
+ exit(DIFF_EXIT);
+}
--- /dev/null
+/* $NetBSD: regular.c,v 1.24 2013/11/20 17:19:14 kleink 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/cdefs.h>
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)regular.c 8.3 (Berkeley) 4/2/94";
+#else
+__RCSID("$NetBSD: regular.c,v 1.24 2013/11/20 17:19:14 kleink Exp $");
+#endif
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdio.h>
+
+#include "extern.h"
+
+void
+c_regular(int fd1, const char *file1, off_t skip1, off_t len1,
+ int fd2, const char *file2, off_t skip2, off_t len2)
+{
+ u_char ch, *p1, *p2;
+ off_t byte, length, line;
+ int dfound;
+ size_t blk_sz, blk_cnt;
+
+ if (sflag && len1 != len2)
+ exit(1);
+
+ if (skip1 > len1)
+ eofmsg(file1, len1 + 1, 0);
+ len1 -= skip1;
+ if (skip2 > len2)
+ eofmsg(file2, len2 + 1, 0);
+ len2 -= skip2;
+
+ byte = line = 1;
+ dfound = 0;
+ length = MIN(len1, len2);
+ for (blk_sz = 1024 * 1024; length != 0; length -= blk_sz) {
+ if ((uintmax_t)blk_sz > (uintmax_t)length)
+ blk_sz = length;
+ p1 = mmap(NULL, blk_sz, PROT_READ, MAP_FILE|MAP_SHARED,
+ fd1, skip1);
+ if (p1 == MAP_FAILED)
+ goto mmap_failed;
+
+ p2 = mmap(NULL, blk_sz, PROT_READ, MAP_FILE|MAP_SHARED,
+ fd2, skip2);
+ if (p2 == MAP_FAILED) {
+ munmap(p1, blk_sz);
+ goto mmap_failed;
+ }
+
+ blk_cnt = blk_sz;
+ for (; blk_cnt--; ++p1, ++p2, ++byte) {
+ if ((ch = *p1) != *p2) {
+ if (!lflag) {
+ diffmsg(file1, file2, byte, line);
+ /* NOTREACHED */
+ }
+ dfound = 1;
+ (void)printf("%6lld %3o %3o\n",
+ (long long)byte, ch, *p2);
+ }
+ if (ch == '\n')
+ ++line;
+ }
+ munmap(p1 - blk_sz, blk_sz);
+ munmap(p2 - blk_sz, blk_sz);
+ skip1 += blk_sz;
+ skip2 += blk_sz;
+ }
+
+ if (len1 != len2)
+ eofmsg(len1 > len2 ? file2 : file1, byte, line);
+ if (dfound)
+ exit(DIFF_EXIT);
+ return;
+
+mmap_failed:
+ c_special(fd1, file1, skip1, fd2, file2, skip2);
+}
--- /dev/null
+/* $NetBSD: special.c,v 1.14 2011/11/28 10:10:10 wiz 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/cdefs.h>
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)special.c 8.3 (Berkeley) 4/2/94";
+#else
+__RCSID("$NetBSD: special.c,v 1.14 2011/11/28 10:10:10 wiz Exp $");
+#endif
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <err.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "extern.h"
+
+void
+c_special(int fd1, const char *file1, off_t skip1, int fd2, const char *file2, off_t skip2)
+{
+ int ch1, ch2;
+ off_t byte, line;
+ FILE *fp1, *fp2;
+ int dfound;
+
+ dfound = 0;
+ if ((fp1 = fdopen(fd1, "r")) == NULL)
+ err(ERR_EXIT, "%s", file1);
+ if ((fp2 = fdopen(fd2, "r")) == NULL)
+ err(ERR_EXIT, "%s", file2);
+
+ for (byte = line = 1; skip1--; byte++) {
+ ch1 = getc(fp1);
+ if (ch1 == EOF)
+ goto eof;
+ if (ch1 == '\n')
+ line++;
+ }
+ for (byte = line = 1; skip2--; byte++) {
+ ch2 = getc(fp2);
+ if (ch2 == EOF)
+ goto eof;
+ if (ch2 == '\n')
+ line++;
+ }
+ dfound = 0;
+ for (byte = line = 1;; ++byte) {
+ ch1 = getc(fp1);
+ ch2 = getc(fp2);
+ if (ch1 == EOF || ch2 == EOF)
+ break;
+ if (ch1 != ch2) {
+ if (lflag) {
+ dfound = 1;
+ (void)printf("%6lld %3o %3o\n", (long long)byte,
+ ch1, ch2);
+ } else
+ diffmsg(file1, file2, byte, line);
+ /* NOTREACHED */
+ }
+ if (ch1 == '\n')
+ ++line;
+ }
+
+ eof:
+ if (ferror(fp1))
+ errmsg(file1, byte, line);
+ if (ferror(fp2))
+ errmsg(file2, byte, line);
+ if (feof(fp1)) {
+ if (!feof(fp2))
+ eofmsg(file1, byte, line);
+ } else
+ if (feof(fp2))
+ eofmsg(file2, byte, line);
+ (void)fclose(fp1);
+ (void)fclose(fp2);
+ if (dfound)
+ exit(DIFF_EXIT);
+}