glibc/hurd/hurdhost.h

/* Host configuration items kept as the whole contents of a file.
   Copyright (C) 1996-2022 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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 Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

/* Fetch and atomically store the contents of the file ITEM.
   Returns the size read or written, or -1 for errors.
   If BUFLEN is not big enough to contain the whole contents,
   BUFLEN bytes of BUF are filled in and we fail with ENAMETOOLONG.  */

ssize_t _hurd_get_host_config (const char *item,
			       char *buf, size_t buflen);
ssize_t _hurd_set_host_config (const char *item,
			       const char *value, size_t valuelen);