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/*
* libexplain - Explain errno values returned by libc functions
* Copyright (C) 2013 Peter Miller
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 3 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libexplain/ac/fcntl.h>
#include <libexplain/ac/stdio.h>
#include <libexplain/ac/stdlib.h>
#include <libexplain/ac/string.h>
#include <libexplain/ac/unistd.h>
#include <libexplain/buffer/open_flags.h>
#include <libexplain/buffer/permission_mode.h>
#include <libexplain/open.h>
#include <libexplain/openat.h>
#include <libexplain/string_to_thing.h>
#include <libexplain/version_print.h>
static void
usage(void)
{
fprintf(stderr, "Usage: test_openat <fildes> <pathname> <flags> <mode>\n");
fprintf(stderr, " test_openat -V\n");
exit(EXIT_FAILURE);
}
static int
is_a_number(const char *text)
{
char *ep = 0;
if (strtol(text, &ep, 0))
{
}
return (ep != text && *ep == '\0');
}
int
main(int argc, char **argv)
{
int fildes;
const char *pathname;
int flags;
mode_t mode;
for (;;)
{
int c = getopt(argc, argv, "V");
if (c == EOF)
break;
switch (c)
{
case 'V':
explain_version_print();
return EXIT_SUCCESS;
default:
usage();
}
}
fildes = 0;
pathname = 0;
flags = 0;
mode = 06666;
switch (argc - optind)
{
case 4:
mode = explain_permission_mode_parse_or_die(argv[optind + 3], "arg 3");
/* Fall through... */
case 3:
flags = explain_parse_open_flags_or_die(argv[optind + 2], "arg 2");
/* Fall through... */
case 2:
pathname = argv[optind + 1];
/* Fall through... */
case 1:
if (is_a_number(argv[optind]))
fildes = explain_parse_int_or_die(argv[optind]);
else if (0 == strcmp(argv[optind], "AT_FDCWD"))
fildes = AT_FDCWD;
else
fildes = explain_open_or_die(argv[optind], O_RDONLY, 0);
break;
default:
usage();
}
explain_openat_or_die(fildes, pathname, flags, mode);
return EXIT_SUCCESS;
}
/* vim: set ts=8 sw=4 et : */
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