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/*
* libexplain - Explain errno values returned by libc functions
* Copyright (C) 2008, 2009 Peter Miller
* Written by Peter Miller <pmiller@opensource.org.au>
*
* 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
* 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/stdio.h>
#include <libexplain/ac/stdlib.h>
#include <libexplain/ac/unistd.h>
#include <libexplain/buffer/lseek_whence.h>
#include <libexplain/lseek.h>
#include <libexplain/strtol.h>
#include <libexplain/wrap_and_print.h>
#include <explain/syscall/lseek.h>
void
explain_syscall_lseek(int errnum, int argc, char **argv)
{
int fildes = -1;
long offset = 0;
int whence = SEEK_SET;
switch (argc)
{
case 0:
fprintf(stderr, "lseek: requires 3 arguments\n");
exit(EXIT_FAILURE);
case 3:
whence = explain_lseek_whence_parse_or_die(argv[2], "lseek arg 2");
/* fall through... */
case 2:
offset = explain_strtol_or_die(argv[1], 0, 0);
/* fall through... */
case 1:
fildes = explain_strtol_or_die(argv[0], 0, 0);
break;
default:
fprintf(stderr, "lseek: too many arguments given\n");
exit(EXIT_FAILURE);
}
explain_wrap_and_print
(
stdout,
explain_errno_lseek(errnum, fildes, offset, whence)
);
}
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