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- /*
- * Control messages (regular priority)
- */
- #define M_DATA 0 /* regular data (not ctl) */
- #define M_BREAK 01 /* line break */
- #define M_HANGUP 02 /* line disconnect */
- #define M_DELIM 03 /* data delimiter */
- #define M_ECHO 04 /* request ACK (1 param) */
- #define M_ACK 05 /* response to ECHO (1 param) */
- #define M_IOCTL 06 /* ioctl; set/get params */
- #define M_DELAY 07 /* real-time xmit delay (1 param) */
- #define M_CTL 010 /* device-specific control message */
- #define M_PASS 011 /* pass file */
- #define M_YDEL 012 /* stream has started generating delims */
- #define M_NDEL 013 /* stream has stopped generating delims */
- /*
- * Control messages (high priority; go to head of queue)
- */
- #define M_SIGNAL 0101 /* generate process signal */
- #define M_FLUSH 0102 /* flush your queues */
- #define M_STOP 0103 /* stop transmission immediately */
- #define M_START 0104 /* restart transmission after stop */
- #define M_IOCACK 0105 /* acknowledge ioctl */
- #define M_IOCNAK 0106 /* negative ioctl acknowledge */
- #define M_CLOSE 0107 /* channel closes (dk only) */
- #define M_IOCWAIT 0110 /* stop ioctl timeout, ack/nak follows later */
- /*
- * ioctl message packet
- */
- #define STIOCSIZE 16
- #define STIOCHDR 4
- struct stioctl {
- unsigned char com[STIOCHDR]; /* four-byte command, low order byte first */
- char data[STIOCSIZE]; /* depends on command */
- };
- /*
- * header for messages, see mesg.c
- */
- #define MSLEN 2
- struct mesg {
- char type;
- unsigned char magic;
- unsigned char size[MSLEN]; /* 2 byte size, low order first */
- };
- #define MSGMAGIC 0345
- #define MSGHLEN 4 /* true length of struct mesg in bytes */
- /*
- * magic numbers of line disciplines
- */
- #define tty_ld 0 /* tty processing */
- #define cdkp_ld 1 /* URP protocol -- character mode (same as 1) */
- #define rdk_ld 2 /* raw datakit protocol */
- #define pk_ld 3 /* packet driver */
- #define mesg_ld 4 /* data message protocol */
- #define dkp_ld 5 /* URP protocol -- block mode */
- #define ntty_ld 6 /* new tty processing */
- #define buf_ld 7 /* buffer up characters till timeout */
- #define trc_ld 8 /* stream tracer */
- #define rmesg_ld 9 /* reverse message processing */
- #define ip_ld 10 /* IP - push on net interfaces (il, ec, ...) */
- #define tcp_ld 11 /* TCP (inet) - only one instance, on /dev/ip6 */
- #define chroute_ld 12 /* Chaosnet - push on net interfaces (il, ec, ...) */
- #define arp_ld 13 /* Ethernet address resolution - on net interfaces */
- #define udp_ld 14 /* UDP (inet) - only one instance, on /dev/ip */
- #define chaos_ld 15 /* Chaosnet - only one, above any chroute_ld */
- #define filter_ld 16 /* Delimiter filtering */
- #define dump_ld 17 /* Debug dumper */
- #define conn_ld 18 /* Connection line discipline */
- #define uxp_ld 19 /* unix common control protocol */
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