/* Copyright (c) 2016-2020, 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"

#if defined(__FreeBSD__)
#include <sys/capsicum.h>

#include "alcove_cap_constants.h"
#endif

/*
 * cap_fcntls_limit(2)
 *
 */
ssize_t alcove_sys_cap_fcntls_limit(alcove_state_t *ap, const char *arg,
                                    size_t len, char *reply, size_t rlen) {
#if defined(__FreeBSD__)
  int index = 0;
  int rv;

  int fd = 0;
  int32_t val = 0;
  uint32_t rights;

  UNUSED(ap);

  /* fd */
  if (alcove_decode_int(arg, len, &index, &fd) < 0)
    return -1;

  /* rights */
  switch (alcove_decode_constant_list(arg, len, &index, &val,
                                      alcove_cap_constants)) {
  case 0:
    if (val < 0)
      return -1;
    rights = val;
    break;
  case 1:
    return alcove_mk_error(reply, rlen, "enotsup");
  default:
    return -1;
  }

  rv = cap_fcntls_limit(fd, rights);

  return (rv < 0) ? alcove_mk_errno(reply, rlen, errno)
                  : alcove_mk_atom(reply, rlen, "ok");
#else
  UNUSED(ap);
  UNUSED(arg);
  UNUSED(len);

  return alcove_mk_atom(reply, rlen, "undef");
#endif
}