phunix/kernel/ipc.h
Jorrit Herder 89cf745fe2 Single boot driver loaded, while multiple can be included in the boot image.
The user needs to set label=... to choose the driver of his or her choice.
This driver will be mapped onto the controller that is set in controller=...

Minor cleanup of kernel source code (boot image table now is static).
2005-08-03 16:06:35 +00:00

28 lines
1.0 KiB
C

#ifndef IPC_H
#define IPC_H
#include <minix/com.h>
/* Masks and flags for system calls. */
#define SYSCALL_FUNC 0x0F /* mask for system call function */
#define SYSCALL_FLAGS 0xF0 /* mask for system call flags */
#define NON_BLOCKING 0x10 /* prevent blocking, return error */
/* System call numbers that are passed when trapping to the kernel. The
* numbers are carefully defined so that it can easily be seen (based on
* the bits that are on) which checks should be done in sys_call().
*/
#define SEND 1 /* 0 0 0 1 : blocking send */
#define RECEIVE 2 /* 0 0 1 0 : blocking receive */
#define SENDREC 3 /* 0 0 1 1 : SEND + RECEIVE */
#define NOTIFY 4 /* 0 1 0 0 : nonblocking notify */
#define ECHO 8 /* 1 0 0 0 : echo a message */
/* The following bit masks determine what checks that should be done. */
#define CHECK_PTR 0x0B /* 1 0 1 1 : validate message buffer */
#define CHECK_DST 0x05 /* 0 1 0 1 : validate message destination */
#define CHECK_SRC 0x02 /* 0 0 1 0 : validate message source */
#endif /* IPC_H */