graphene/Pal/src/host/Skeleton/db_process.c

/* Copyright (C) 2014 Stony Brook University
   This file is part of Graphene Library OS.

   Graphene Library OS 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 3 of the
   License, or (at your option) any later version.

   Graphene Library OS 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */

/*
 * db_process.c
 *
 * This source file contains functions to create a child process and terminate
 * the running process. Child does not inherit any objects or memory from its
 * parent pricess. A Parent process may not modify the execution of its
 * children. It can wait for a child to exit using its handle. Also, parent and
 * child may communicate through I/O streams provided by the parent to the child
 * at creation.
 */

#include "pal_defs.h"
#include "pal.h"
#include "pal_internal.h"
#include "pal_debug.h"
#include "pal_error.h"
#include "api.h"

int _DkProcessCreate (PAL_HANDLE * handle, const char * uri,
                      int flags, const char ** args)
{
    return -PAL_ERROR_NOTIMPLEMENTED;
}

noreturn void _DkProcessExit (int exitcode)
{
    /* need to be implemented */
}

static int64_t proc_read (PAL_HANDLE handle, uint64_t offset, uint64_t count,
                          void * buffer)
{
    return -PAL_ERROR_NOTIMPLEMENTED;
}

static int64_t proc_write (PAL_HANDLE handle, uint64_t offset, uint64_t count,
                           const void * buffer)
{
    return -PAL_ERROR_NOTIMPLEMENTED;
}

static int proc_close (PAL_HANDLE handle)
{
    return -PAL_ERROR_NOTIMPLEMENTED;
}

struct handle_ops proc_ops = {
        .read           = &proc_read,
        .write          = &proc_write,
        .close          = &proc_close,
    };