/*  This file is part of Lyos.

    Lyos 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.

    Lyos 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 Lyos.  If not, see <http://www.gnu.org/licenses/>. */

#include <lyos/types.h>
#include <lyos/ipc.h>
#include "errno.h"
#include "lyos/const.h"
#include "proto.h"
#include "global.h"

int do_brk()
{
    endpoint_t src = mm_msg.source;
    struct mmproc* mmp = endpt_mmproc(src);
    if (!mmp) return EINVAL;

    void* addr = mm_msg.ADDR;

    if (region_extend_up_to(mmp, (vir_bytes)addr) == 0) return 0;
    return ENOMEM;
}
