minix3/kernel/table.c

67 lines
2.6 KiB
C

/* The object file of "table.c" contains most kernel data. Variables that
* are declared in the *.h files appear with EXTERN in front of them, as in
*
* EXTERN int x;
*
* Normally EXTERN is defined as extern, so when they are included in another
* file, no storage is allocated. If EXTERN were not present, but just say,
*
* int x;
*
* then including this file in several source files would cause 'x' to be
* declared several times. While some linkers accept this, others do not,
* so they are declared extern when included normally. However, it must be
* declared for real somewhere. That is done here, by redefining EXTERN as
* the null string, so that inclusion of all *.h files in table.c actually
* generates storage for them.
*
* Various variables could not be declared EXTERN, but are declared PUBLIC
* or PRIVATE. The reason for this is that extern variables cannot have a
* default initialization. If such variables are shared, they must also be
* declared in one of the *.h files without the initialization. Examples
* include 'boot_image' (this file) and 'idt' and 'gdt' (protect.c).
*
* Changes:
* Nov 22, 2009 rewrite of privilege management (Cristiano Giuffrida)
* Aug 02, 2005 set privileges and minimal boot image (Jorrit N. Herder)
* Oct 17, 2004 updated above and tasktab comments (Jorrit N. Herder)
* May 01, 2004 changed struct for system image (Jorrit N. Herder)
*/
#define _TABLE
#include "kernel/kernel.h"
#include <minix/com.h>
/* The system image table lists all programs that are part of the boot image.
* The order of the entries here MUST agree with the order of the programs
* in the boot image and all kernel tasks must come first.
* The order of the entries here matches the priority NOTIFY messages are
* delivered to a given process. NOTIFY messages are always delivered with
* the highest priority. DS must be the first system process in the list to
* allow reliable asynchronous publishing of system events. RS comes right after
* to prioritize ping messages periodically delivered to system processes.
*/
struct boot_image image[NR_BOOT_PROCS] = {
/* process nr, flags, stack size, name */
{ASYNCM, "asyncm"},
{IDLE, "idle" },
{CLOCK, "clock" },
{SYSTEM, "system"},
{HARDWARE, "kernel"},
{DS_PROC_NR, "ds" },
{RS_PROC_NR, "rs" },
{PM_PROC_NR, "pm" },
{SCHED_PROC_NR, "sched" },
{VFS_PROC_NR, "vfs" },
{MEM_PROC_NR, "memory"},
{TTY_PROC_NR, "tty" },
{MFS_PROC_NR, "mfs" },
{VM_PROC_NR, "vm" },
{PFS_PROC_NR, "pfs" },
{INIT_PROC_NR, "init" },
};