/*
- * Copyright (c) 1987, 1990, 1993
+ * 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
#ifndef lint
static char copyright[] =
-"@(#) Copyright (c) 1987, 1990, 1993\n\
+"@(#) Copyright (c) 1987, 1990, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
-static char sccsid[] = "@(#)cmp.c 8.1 (Berkeley) 6/6/93";
+static char sccsid[] = "@(#)cmp.c 8.3 (Berkeley) 4/2/94";
#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
+
+#include <err.h>
#include <fcntl.h>
-#include <errno.h>
-#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <unistd.h>
+
#include "extern.h"
int lflag, sflag;
static void usage __P((void));
+int
main(argc, argv)
int argc;
char *argv[];
argc -= optind;
if (lflag && sflag)
- err("only one of -l and -s may be specified");
+ errx(ERR_EXIT, "only one of -l and -s may be specified");
if (argc < 2 || argc > 4)
usage();
file1 = "stdin";
}
else if ((fd1 = open(file1, O_RDONLY, 0)) < 0)
- err("%s: %s", file1, strerror(errno));
+ err(ERR_EXIT, "%s", file1);
if (strcmp(file2 = argv[1], "-") == 0) {
if (special)
- err("standard input may only be specified once");
+ 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)
- err("%s: %s", file2, strerror(errno));
+ err(ERR_EXIT, "%s", file2);
skip1 = argc > 2 ? strtol(argv[2], NULL, 10) : 0;
skip2 = argc == 4 ? strtol(argv[3], NULL, 10) : 0;
if (!special) {
if (fstat(fd1, &sb1))
- err("%s: %s", file1, strerror(errno));
+ err(ERR_EXIT, "%s", file1);
if (!S_ISREG(sb1.st_mode))
special = 1;
else {
if (fstat(fd2, &sb2))
- err("%s: %s", file2, strerror(errno));
+ err(ERR_EXIT, "%s", file2);
if (!S_ISREG(sb2.st_mode))
special = 1;
}
static void
usage()
{
+
(void)fprintf(stderr,
"usage: cmp [-l | s] file1 file2 [skip1 [skip2]]\n");
- exit(2);
+ exit(ERR_EXIT);
}