/* Copyright (c) 2014-2018, Michael Santos <michael.santos@gmail.com>
 *
 * Permission to use, copy, modify, and/or 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 "alcove.h"
#include "alcove_call.h"

/*
 * getresuid(2)
 */
    ssize_t
alcove_sys_getresuid(alcove_state_t *ap, const char *arg, size_t len,
        char *reply, size_t rlen)
{
#if defined(__sunos__) || defined(__APPLE__)
    UNUSED(ap);
    UNUSED(arg);
    UNUSED(len);

    return alcove_mk_atom(reply, rlen, "undef");
#else
    int rindex = 0;
    uid_t uid = {0};
    uid_t euid = {0};
    uid_t suid = {0};
    int rv = 0;

    UNUSED(ap);
    UNUSED(arg);
    UNUSED(len);

    rv = getresuid(&uid, &euid, &suid);

    if (rv < 0)
        return  alcove_mk_errno(reply, rlen, errno);

    ALCOVE_TUPLE4(reply, rlen, &rindex,
            "ok",
            alcove_encode_ulonglong(reply, rlen, &rindex, uid),
            alcove_encode_ulonglong(reply, rlen, &rindex, euid),
            alcove_encode_ulonglong(reply, rlen, &rindex, suid)
    );

    return rindex;
#endif
}