Minix2.0/include/minix/com.h
/* System calls. */
#define SEND 1 /* function code for sending messages */
#define RECEIVE 2 /* function code for receiving messages */
#define BOTH 3 /* function code for SEND + RECEIVE */
#define ANY (NR_PROCS+100) /* receive(ANY, buf) accepts from any source */
/* Task numbers, function codes and reply codes. */
/* The values of several task numbers depend on whether they or other tasks
* are enabled. They are defined as (PREVIOUS_TASK - ENABLE_TASK) in general.
* ENABLE_TASK is either 0 or 1, so a task either gets a new number, or gets
* the same number as the previous task and is further unused.
* The TTY task must always have the most negative number so that it is
* initialized first. Many of the TTY function codes are shared with other
* tasks.
*/
#define TTY (DL_ETH - 1)
/* terminal I/O class */
# define CANCEL 0 /* general req to force a task to cancel */
# define HARD_INT 2 /* fcn code for all hardware interrupts */
# define DEV_READ 3 /* fcn code for reading from tty */
# define DEV_WRITE 4 /* fcn code for writing to tty */
# define DEV_IOCTL 5 /* fcn code for ioctl */
# define DEV_OPEN 6 /* fcn code for opening tty */
# define DEV_CLOSE 7 /* fcn code for closing tty */
# define SCATTERED_IO 8 /* fcn code for multiple reads/writes */
# define TTY_SETPGRP 9 /* fcn code for setpgroup */
# define TTY_EXIT 10 /* a process group leader has exited */
# define OPTIONAL_IO 16 /* modifier to DEV_* codes within vector */
# define SUSPEND -998 /* used in interrupts when tty has no data */
#define DL_ETH (CDROM - ENABLE_NETWORKING)
/* networking task */
/* Message type for data link layer reqests. */
# define DL_WRITE 3
# define DL_WRITEV 4
# define DL_READ 5
# define DL_READV 6
# define DL_INIT 7
# define DL_STOP 8
# define DL_GETSTAT 9
/* Message type for data link layer replies. */
# define DL_INIT_REPLY 20
# define DL_TASK_REPLY 21
# define DL_PORT m2_i1
# define DL_PROC m2_i2
# define DL_COUNT m2_i3
# define DL_MODE m2_l1
# define DL_CLCK m2_l2
# define DL_ADDR m2_p1
# define DL_STAT m2_l1
/* Bits in 'DL_STAT' field of DL replies. */
# define DL_PACK_SEND 0x01
# define DL_PACK_RECV 0x02
# define DL_READ_IP 0x04
/* Bits in 'DL_MODE' field of DL requests. */
# define DL_NOMODE 0x0
# define DL_PROMISC_REQ 0x2
# define DL_MULTI_REQ 0x4
# define DL_BROAD_REQ 0x8
# define NW_OPEN DEV_OPEN
# define NW_CLOSE DEV_CLOSE
# define NW_READ DEV_READ
# define NW_WRITE DEV_WRITE
# define NW_IOCTL DEV_IOCTL
# define NW_CANCEL CANCEL
#define CDROM (AUDIO - ENABLE_CDROM)
/* cd-rom device task */
#define AUDIO (MIXER - ENABLE_AUDIO)
#define MIXER (SCSI - ENABLE_AUDIO)
/* audio & mixer device tasks */
#define SCSI (WINCHESTER - ENABLE_SCSI)
/* scsi device task */
#define WINCHESTER (SYN_ALRM_TASK - ENABLE_WINI)
/* winchester (hard) disk class */
#define SYN_ALRM_TASK -8 /* task to send CLOCK_INT messages */
#define IDLE -7 /* task to run when there's nothing to run */
#define PRINTER -6 /* printer I/O class */
#define FLOPPY -5 /* floppy disk class */
#define MEM -4 /* /dev/ram, /dev/(k)mem and /dev/null class */
# define NULL_MAJOR 1 /* major device for /dev/null */
# define RAM_DEV 0 /* minor device for /dev/ram */
# define MEM_DEV 1 /* minor device for /dev/mem */
# define KMEM_DEV 2 /* minor device for /dev/kmem */
# define NULL_DEV 3 /* minor device for /dev/null */
#define CLOCK -3 /* clock class */
# define SET_ALARM 1 /* fcn code to CLOCK, set up alarm */
# define GET_TIME 3 /* fcn code to CLOCK, get real time */
# define SET_TIME 4 /* fcn code to CLOCK, set real time */
# define GET_UPTIME 5 /* fcn code to CLOCK, get uptime */
# define SET_SYNC_AL 6 /* fcn code to CLOCK, set up alarm which */
/* times out with a send */
# define REAL_TIME 1 /* reply from CLOCK: here is real time */
# define CLOCK_INT HARD_INT
/* this code will only be sent by */
/* SYN_ALRM_TASK to a task that requested a */
/* synchronous alarm */
#define SYSTASK -2 /* internal functions */
# define SYS_XIT 1 /* fcn code for sys_xit(parent, proc) */
# define SYS_GETSP 2 /* fcn code for sys_sp(proc, &new_sp) */
# define SYS_OLDSIG 3 /* fcn code for sys_oldsig(proc, sig) */
# define SYS_FORK 4 /* fcn code for sys_fork(parent, child) */
# define SYS_NEWMAP 5 /* fcn code for sys_newmap(procno, map_ptr) */
# define SYS_COPY 6 /* fcn code for sys_copy(ptr) */
# define SYS_EXEC 7 /* fcn code for sys_exec(procno, new_sp) */
# define SYS_TIMES 8 /* fcn code for sys_times(procno, bufptr) */
# define SYS_ABORT 9 /* fcn code for sys_abort() */
# define SYS_FRESH 10 /* fcn code for sys_fresh() (Atari only) */
# define SYS_KILL 11 /* fcn code for sys_kill(proc, sig) */
# define SYS_GBOOT 12 /* fcn code for sys_gboot(procno, bootptr) */
# define SYS_UMAP 13 /* fcn code for sys_umap(procno, etc) */
# define SYS_MEM 14 /* fcn code for sys_mem() */
# define SYS_TRACE 15 /* fcn code for sys_trace(req,pid,addr,data) */
# define SYS_VCOPY 16 /* fnc code for sys_vcopy(src_proc, dest_proc,
vcopy_s, vcopy_ptr) */
# define SYS_SENDSIG 17 /* fcn code for sys_sendsig(&sigmsg) */
# define SYS_SIGRETURN 18 /* fcn code for sys_sigreturn(&sigmsg) */
# define SYS_ENDSIG 19 /* fcn code for sys_endsig(procno) */
# define SYS_GETMAP 20 /* fcn code for sys_getmap(procno, map_ptr) */
#define HARDWARE -1 /* used as source on interrupt generated msgs*/
/* Names of message fields for messages to CLOCK task. */
#define DELTA_TICKS m6_l1 /* alarm interval in clock ticks */
#define FUNC_TO_CALL m6_f1 /* pointer to function to call */
#define NEW_TIME m6_l1 /* value to set clock to (SET_TIME) */
#define CLOCK_PROC_NR m6_i1 /* which proc (or task) wants the alarm? */
#define SECONDS_LEFT m6_l1 /* how many seconds were remaining */
/* Names of message fields used for messages to block and character tasks. */
#define DEVICE m2_i1 /* major-minor device */
#define PROC_NR m2_i2 /* which (proc) wants I/O? */
#define COUNT m2_i3 /* how many bytes to transfer */
#define REQUEST m2_i3 /* ioctl request code */
#define POSITION m2_l1 /* file offset */
#define ADDRESS m2_p1 /* core buffer address */
/* Names of message fields for messages to TTY task. */
#define TTY_LINE DEVICE /* message parameter: terminal line */
#define TTY_REQUEST COUNT /* message parameter: ioctl request code */
#define TTY_SPEK POSITION /* message parameter: ioctl speed, erasing */
#define TTY_FLAGS m2_l2 /* message parameter: ioctl tty mode */
#define TTY_PGRP m2_i3 /* message parameter: process group */
/* Names of the message fields for QIC 02 status reply from tape driver */
#define TAPE_STAT0 m2_l1
#define TAPE_STAT1 m2_l2
/* Names of messages fields used in reply messages from tasks. */
#define REP_PROC_NR m2_i1 /* # of proc on whose behalf I/O was done */
#define REP_STATUS m2_i2 /* bytes transferred or error number */
/* Names of fields for copy message to SYSTASK. */
#define SRC_SPACE m5_c1 /* T or D space (stack is also D) */
#define SRC_PROC_NR m5_i1 /* process to copy from */
#define SRC_BUFFER m5_l1 /* virtual address where data come from */
#define DST_SPACE m5_c2 /* T or D space (stack is also D) */
#define DST_PROC_NR m5_i2 /* process to copy to */
#define DST_BUFFER m5_l2 /* virtual address where data go to */
#define COPY_BYTES m5_l3 /* number of bytes to copy */
/* Field names for accounting, SYSTASK and miscellaneous. */
#define USER_TIME m4_l1 /* user time consumed by process */
#define SYSTEM_TIME m4_l2 /* system time consumed by process */
#define CHILD_UTIME m4_l3 /* user time consumed by process' children */
#define CHILD_STIME m4_l4 /* sys time consumed by process' children */
#define BOOT_TICKS m4_l5 /* number of clock ticks since boot time */
#define PROC1 m1_i1 /* indicates a process */
#define PROC2 m1_i2 /* indicates a process */
#define PID m1_i3 /* process id passed from MM to kernel */
#define STACK_PTR m1_p1 /* used for stack ptr in sys_exec, sys_getsp */
#define PR m6_i1 /* process number for sys_sig */
#define SIGNUM m6_i2 /* signal number for sys_sig */
#define FUNC m6_f1 /* function pointer for sys_sig */
#define MEM_PTR m1_p1 /* tells where memory map is for sys_newmap */
#define NAME_PTR m1_p2 /* tells where program name is for dmp */
#define IP_PTR m1_p3 /* initial value for ip after exec */
#define SIG_PROC m2_i1 /* process number for inform */
#define SIG_MAP m2_l1 /* used by kernel for passing signal bit map */
#define SIG_MSG_PTR m1_i1 /* pointer to info to build sig catch stack */
#define SIG_CTXT_PTR m1_p1 /* pointer to info to restore signal context */