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# KI.H -- IRAF Kernel Interface definitions.
define MAX_NODES 512 # max nodes known to KI
define MAX_CHANNELS LAST_FD # requires <config.h>
define MAX_INDIRECT 20 # max indirection in a route
define MAX_ALIAS 6 # maximum number of aliases per node
define SZ_ALIAS 16 # size of a node name alias
define SZ_SERVER 128 # size of a server name
define HNT_SUBDIR "dev" # parts of host name table filename
define HNT_FILENAME "hosts" # default host name table
define HNT_ENVNAME "irafhnt" # user host name table
define READ_IN_PROGRESS (-11) # used in binary file i/o
define OSHIFT 128 # optype= (opcode * OSHIFT) + subcode
define FIRST_CHAN 4 # first available kchan.
define LOCAL 0 # node is a local node
define REMOTE 1 # node is a remote node
# Node status flags.
define F_IOERR 01B # fatal error on kschan
define F_REUSE 02B # node descriptor may be reused
# ZFIOTX buffer descriptor.
define SZ_TXBUF 16386 # size of text file buffer (should be
# at least (2*LEN_SEQBUF*SZ_LINE))
define LEN_TXBDES (5+SZ_TXBUF/SZ_STRUCT)
define B_CI Memi[$1] # character index into current record
define B_RP Memi[$1+1] # pointer to current record
define B_ITOP Memi[$1+2] # end of input buffer
define B_OTOP Memi[$1+3] # end of output buffer
define B_BUFTOP Memi[$1+4] # end of buffer
define B_BUFPTR P2C(($1)+5) # first char of buffer
# ZGFDIR buffer descriptor.
define SZ_DIRDATA 2048 # amount of directory data to read
define LEN_DIRBDES (5+SZ_DIRDATA/SZ_STRUCT)
define D_IP Memi[$1] # input pointer into dirbuf
define D_ITOP Memi[$1+1] # top of dirbuf
define D_EOFSEEN Memi[$1+2] # dirbuf contains last of data
define D_DATA P2C(($1)+5) # pointer to data area
# Record descriptor structure (format of a line of text record in the input
# buffer when reading from a remote text file).
define R_RECLEN Memc[$1] # encoded record length (2 chars)
define R_SEKOFF Memc[$1+2] # encoded seek offset (5 chars)
define R_DATA (($1)+7) # pointer to data text
define NCHARS_INT 2 # nchars to encode an int
define NCHARS_LONG 5 # nchars to encode a long
define R_GETNCHARS (($1)-7) # reclen to nchars
define R_GETRECLEN (($1)+7) # nchars to reclen
# KII instruction format.
define LEN_INTFIELDS 16 # number of integer fields
define FIRSTINTFIELD p_opcode # first integer field in common
define MAX_ARGS 13 # max procedure arguments
define SZ_SBUF 255 # size of string buffer
define SZB_PACKET 320 # packet size, bytes
# KII opcodes.
define KI_ENVINIT 1
define KI_SETROOT 2
define KI_ZOSCMD 3
define KI_FMAPFN 4
define KI_ZFACSS 10
define KI_ZFALOC 11
define KI_ZFCHDR 12
define KI_ZFDELE 13
define KI_ZFINFO 14
define KI_ZFGCWD 15
define KI_ZFMKCP 16
define KI_ZFMKDR 17
define KI_ZFPATH 18
define KI_ZFPROT 19
define KI_ZFRNAM 20
define KI_ZFRMDR 21
define KI_ZFSUBD 22
define KI_ZDVALL 23
define KI_ZDVOWN 24
define KI_ZFUTIM 25
define KI_ZOPDIR 30
define KI_ZCLDIR 31
define KI_ZGFDIR 32
define KI_ZOPDPR 35
define KI_ZCLDPR 36
define KI_ZOPCPR 37
define KI_ZCLCPR 38
define KI_ZINTPR 39
# Device driver opcodes. BF must be the lowest numbered binary file driver
# and TX must be the lowest number text file driver.
define KI_ZFIOBF 40
define KI_ZFIOLP 41
define KI_ZFIOPL 42
define KI_ZFIOPR 43
define KI_ZFIOSF 44
define KI_ZFIOGD 45
define KI_ZFIOTX 50
define KI_ZFIOTY 51
define KI_ZFIOMT 55
# KII subcodes.
define BF_OPN 1 # binary files (BF, SF, PR, PL, etc.)
define BF_CLS 2
define BF_ARD 3
define BF_AWR 4
define BF_AWT 5
define BF_STT 6
define TX_OPN 1 # text files (TX, TY)
define TX_CLS 2
define TX_GET 3
define TX_PUT 4
define TX_FLS 5
define TX_SEK 6
define TX_NOT 7
define TX_STT 8
define MT_OP 1 # magtape zz-routines
define MT_CL 2
define MT_RD 3
define MT_WR 4
define MT_WT 5
define MT_ST 6
define MT_RW 7
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