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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/buffer/open_flags.h>
#include <libexplain/buffer/permission_mode.h>
#include <libexplain/openat.h>
#include <libexplain/open.h>
#include <libexplain/output.h>
#include <libexplain/string_to_thing.h>
#include <libexplain/wrap_and_print.h>
#include <explain/syscall/openat.h>
static int
is_a_number(const char *text)
{
char *ep = 0;
if (strtol(text, &ep, 0))
{
}
return (ep != text && *ep == '\0');
}
void
explain_syscall_openat(int errnum, int argc, char **argv)
{
int fildes;
const char *pathname;
int flags;
mode_t mode;
fildes = 0;
pathname = 0;
flags = 0;
mode = 0;
switch (argc)
{
case 4:
mode = explain_permission_mode_parse_or_die(argv[3], "openat arg 4");
/* Fall through... */
case 3:
flags = explain_parse_open_flags_or_die(argv[2], "openat arg 3");
/* Fall through... */
case 2:
pathname = argv[1];
/* Fall through... */
case 1:
if (is_a_number(argv[0]))
fildes = explain_parse_int_or_die(argv[0]);
else if (0 == strcmp(argv[0], "AT_FDCWD"))
fildes = AT_FDCWD;
else
fildes = explain_open_or_die(argv[0], O_RDONLY, 0);
break;
default:
explain_output_error_and_die
(
"openat: requires 4 arguments, not %d\n",
argc
);
break;
}
explain_wrap_and_print(stdout, explain_errno_openat(errnum, fildes,
pathname, flags, mode));
}
/* vim: set ts=8 sw=4 et : */
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