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

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

noreturn void _DkProcessExit(int exitcode) {
    while (true) {
        /* nothing */;
    }
}

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,
};