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/* $OpenBSD: dirname.c,v 1.17 2019/01/25 00:19:26 millert Exp $ */
/*
* Copyright (c) 1997 Todd C. Miller <millert@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <err.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static void __dead usage(void);
int
main(int argc, char *argv[])
{
int ch;
char *dir;
if (pledge("stdio", NULL) == -1)
err(1, "pledge");
while ((ch = getopt(argc, argv, "")) != -1) {
switch (ch) {
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc != 1)
usage();
if ((dir = dirname(argv[0])) == NULL)
err(1, "%s", argv[0]);
puts(dir);
return 0;
}
extern char *__progname;
static void __dead
usage(void)
{
(void)fprintf(stderr, "usage: %s pathname\n", __progname);
exit(1);
}
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