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/*
* libexplain - Explain errno values returned by libc functions
* Copyright (C) 2009, 2010, 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
* ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNULesser
* 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/sys/uio.h>
#include <libexplain/malloc.h>
#include <libexplain/string_to_thing.h>
#include <libexplain/writev.h>
#include <libexplain/wrap_and_print.h>
#include <explain/syscall/writev.h>
void
explain_syscall_writev(int errnum, int argc, char **argv)
{
int fildes;
struct iovec *iov;
int iovcnt;
int j;
if (0 == (argc & 1))
{
fprintf(stderr, "writev: requires an odd number of arguments, not %d\n",
argc);
exit(EXIT_FAILURE);
}
iovcnt = (argc - 1) / 2;
iov = explain_malloc_or_die(iovcnt * sizeof(*iov));
fildes = explain_parse_int_or_die(argv[0]);
for (j = 1; j < argc; j += 2)
{
struct iovec *p = iov + j / 2;
p->iov_base = explain_parse_pointer_or_die(argv[j]);
p->iov_len = explain_parse_size_t_or_die(argv[j + 1]);
}
explain_wrap_and_print(stdout, explain_errno_writev(errnum, fildes, iov,
iovcnt));
}
/* vim: set ts=8 sw=4 et : */
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