a408699ce0
Removed stop sequence when MINIX is shut down. Disabled send mask checks --- to be replaced by proper mechanism. Fixed bug relating to 'shutdown -x'. Simplified clock accounting of realtime. Updated Makefiles for mkdept script.
45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
/* Definition of the 'p_sendmask' bit mask used in the process table. The bit
|
|
* mask of process is checked in mini_send() to see if the caller is allowed
|
|
* to send to the destination.
|
|
*
|
|
* PLEASE NOTE: the send masks definitions are a mess and must be updated!!!
|
|
* this will be done when dynamic driver loading is implemented
|
|
*
|
|
* Changes:
|
|
* May 01, 2004 created and sendmask definitions (Jorrit N. Herder)
|
|
*/
|
|
|
|
#ifndef SENDMASK_H
|
|
#define SENDMASK_H
|
|
|
|
/* Define type for sendmask, if not already done. */
|
|
#include "type.h"
|
|
|
|
/* Constants to support the bitmask operations. */
|
|
#define BIT_0 (send_mask_t) 1
|
|
#define MASK_ENTRIES NR_TASKS + (INIT_PROC_NR+1) + 1
|
|
#define USER_PROC_NR INIT_PROC_NR+1 /* used to set bit for user procs */
|
|
#define ALLOW_ALL_MASK (send_mask_t) -1
|
|
#define DENY_ALL_MASK (send_mask_t) 0
|
|
|
|
/* Check if given process number is in range. */
|
|
#define isvalid(n) ((unsigned) ((n)+NR_TASKS) <= MASK_ENTRIES -1)
|
|
|
|
/* Default masks and bit operations that easily allow to construct bit masks.
|
|
* Note the one always must start with a default mask like allow_all_mask.
|
|
* From that point, one can, for example, deny several processes.
|
|
*/
|
|
#define allow(enabled,n) | (enabled << ((n) + NR_TASKS))
|
|
#define deny(enabled,n) & ~(enabled << ((n) + NR_TASKS))
|
|
#define send_mask_allow(mask,n) ((mask) |= (1 << ((n) + NR_TASKS)))
|
|
#define send_mask_deny(mask,n) ((mask) &= ~(1 << ((n) + NR_TASKS)))
|
|
|
|
/* Check if the bit for the given process number is set. */
|
|
#define isallowed(mask,n) ((mask) & (BIT_0 << ((n) + NR_TASKS)))
|
|
|
|
#define USER_PROC_SENDMASK \
|
|
DENY_ALL_MASK allow(1, PM_PROC_NR) allow(1, FS_PROC_NR)
|
|
|
|
#endif /* SENDMASK_H */
|
|
|