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/* $OpenBSD: realpath.c,v 1.1 2021/10/13 15:04:53 kn Exp $ */
/*
* Copyright (c) 2021 Klemens Nanni <kn@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 <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
void __dead
usage(void)
{
fprintf(stderr, "usage: %s [-q] file\n", getprogname());
exit(1);
}
int
main(int argc, char *argv[])
{
int ch, qflag = 0;
char *buf;
if (pledge("stdio rpath", NULL) == -1)
err(1, "pledge");
while ((ch = getopt(argc, argv, "q")) != -1) {
switch (ch) {
case 'q':
qflag = 1;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc != 1)
usage();
buf = realpath(argv[0], NULL);
if (buf == NULL) {
if (qflag)
return (1);
err(1, "%s", argv[0]);
}
printf("%s\n", buf);
return (0);
}
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