source: trunk/kernel/syscalls/sys_place_fork.c @ 623

Last change on this file since 623 was 623, checked in by alain, 3 years ago

Introduce three new types of vsegs (KCODE,KDATA,KDEV)
to map the kernel vsegs in the process VSL and GPT.
This now used by both the TSAR and the I86 architectures.

File size: 1.6 KB
Line 
1/*
2 * sys_get_core.c - get calling core cluster and local index.
3 *
4 * Author    Alain Greiner (2016,2017,2018,2019)
5 * 
6 * Copyright (c) UPMC Sorbonne Universites
7 *
8 * This file is part of ALMOS-MKH.
9 *
10 * ALMOS-MKH is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2.0 of the License.
13 *
14 * ALMOS-MKH is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#include <hal_kernel_types.h>
25#include <hal_uspace.h>
26#include <hal_special.h>
27#include <errno.h>
28#include <core.h>
29#include <thread.h>
30#include <process.h>
31#include <vmm.h>
32#include <printk.h>
33
34#include <syscalls.h>
35
36///////////////////////////////////
37int sys_place_fork( uint32_t  cxy )
38{
39    thread_t  * this    = CURRENT_THREAD;
40    process_t * process = this->process;
41
42    // check cxy argument
43    if( cluster_is_undefined( cxy ) )
44    {
45       
46#if DEBUG_SYSCALLS_ERROR
47printk("\n[ERROR] in %s : thread[%x,‰x] / illegal cxy argument %x\n",
48__FUNCTION__ , process->pid , this->trdid , cxy );
49#endif
50        this->errno = EFAULT;
51                return -1;
52        }
53
54    // set relevant arguments in calling thread descriptor
55    this->fork_user = true;
56    this->fork_cxy  = cxy;
57
58        return 0; 
59
60}  // end sys_place_fork()
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