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PDP-10 Archives
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msv11ck
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10,7/mail/mx/mxufil.req
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literal
FILE_KEEP = 0,
FILE_ABORT = 1,
FILE_DELETE = 2,
FILE_ACCESS_READ_ONLY = 1, ! File is read only
FILE_ACCESS_WRITE_ONLY = 2, ! File is write only
FILE_ACCESS_APPEND_ONLY = 3; ! File is APPEND only.
!
! File system interface (MXUFIL)
!
macro
MX$FILE_INITIALIZE = UF_INI %,
MX$FILE_DELETE = UF_DEL %, !***
MX$FILE_SET_WRITER = UF_SWR %,
MX$FILE_SIZE = UF_SIZE %, !***
MX$FILE_EXISTS = UF_XST %,
MX$FILE_COPY = UF_CPY %,
MX$FILE_WRITTEN_DATE = UF_DAT %, !***
MX$FILE_RENAME = UF_REN %, !***
MX$FILE_OPEN = UF_OPEN %,
MX$FILE_READ = UF_READ %,
MX$FILE_WRITE = UF_WRITE %,
! MX$FILE_SKIP = UF_SKIP %,
MX$FILE_SEEK = UF_SEEK %,
%if %SWITCHES(TOPS10)
%then
MX$FILE_BUILD_BUFFERS = UF_BLD %,
MX$FILE_KILL_BUFFERS = UF_KIL %,
MX$FILE_STRUCTURE = UF_STR %,
%fi
MX$FILE_CLOSE = UF_CLOSE %,
MX$FILE_ROUTINES =
MX$FILE_DELETE,
MX$FILE_SET_WRITER,
MX$FILE_SIZE,
MX$FILE_EXISTS,
MX$FILE_COPY,
MX$FILE_WRITTEN_DATE,
MX$FILE_RENAME,
MX$FILE_OPEN, ! Open file
MX$FILE_READ, ! Read record from file
MX$FILE_WRITE, ! Write record to file
! MX$FILE_SKIP, ! Skip over bytes in a file
MX$FILE_SEEK, ! Seek to specified byte in file
MX$FILE_SIZE,
%if %SWITCHES(TOPS10)
%then
MX$FILE_BUILD_BUFFERS, ! Allocate I/O buffer ring
MX$FILE_KILL_BUFFERS: novalue, ! Deallocate I/O buffer ring
MX$FILE_STRUCTURE, !Return Sixbit structure name
%fi
MX$FILE_CLOSE ! Close file
%;
!
! Macros:
!
! $P (mask) - Calculate bit position of a literal mask
!
! where mask is a literal or symbol which defines a
! field as a series of contiguous bits
!
! returns pos, which may be used in a context such
! as, ADDRESS<pos,siz>, or FIELD_NAME = [ADDR,pos,siz,sgn]
!
MACRO $p (mask) =
%NBITSU (mask AND - mask) - 1 % ;
! $S (mask) - Calculate size in bits of a literal mask
!
! where mask is a literal or symbol which defines a
! field as a series of contiguous bits
!
! returns siz, which may be used in a context such
! as, ADDRESS<pos,siz>, or FIELD_NAME = [ADDR,pos,siz,sgn]
!
MACRO $s (mask) =
%NBITSU (mask) - %NBITSU (mask AND - mask) + 1 % ;
! $P$S (mask) - Calculate bit position and size of a literal mask
!
! where mask is a literal or symbol which defines a
! field as a series of contiguous bits
!
! returns "pos , siz", which may be used in a context such
! as, ADDRESS<pos,siz>, or FIELD_NAME = [ADDR,pos,siz,sgn]
!
! E.g, XCB_1 = [2,$P$S(XCB_MASK),0]
MACRO $p$s (mask) =
$p (mask) , $s (mask) % ;
! The following macro is already defined on Tops-10 in TENDEF.
%if not %SWITCHES(TOPS10) %then
macro
FLD (VAL, MASK) =
((VAL) ^ (%nbitsu(MASK and - MASK) - 1)) %;
%fi
MACRO !Find the length of ASCIZ string...
ch$length(ptr) =
CH$DIFF( CH$FIND_CH( max_line_length, ptr, 0 ), ptr) %;
MACRO
transfer_bytes(cnt, src, dst) =
BEGIN
dst = CH$MOVE(cnt, .src, .dst);
src = CH$PLUS(.src, cnt);
buffer [bd_remaining_count] = .buffer [bd_remaining_count] - cnt;
file [fd_current_position] = .file [fd_current_position] + cnt;
%IF %SWITCHES(TOPS20) %THEN
buffer [bd_current_position] = .buffer [bd_current_position] +
cnt;
%FI
END %;
%IF %SWITCHES(TOPS20) %THEN
MACRO
file_sys_spec_fields =
fd_jfn = [$INTEGER], ! JFN of file
fd_name = [$STRING (max_file_name_length + 1)], ! Buffer for file name
fd_page_count = [$INTEGER] ! Number of pages in file
%;
%FI
%IF %SWITCHES(TOPS10) %THEN
MACRO
file_sys_spec_fields =
fd_channel = [$INTEGER], ! I/O channel for this file
fd_lock_channel = [$INTEGER], ! I/O channel that we enqued on
fd_filop_function = [$INTEGER], ! Filop Function to use for I/O
fd_current_block = [$INTEGER], ! The current block number
fd_block_count = [$INTEGER], ! Number of blocks in file
fd_filop_block = [$sub_block($fofsp+1)],
fd_lookup_block = [$sub_block(4)],
fd_path_block = [$sub_block($ptmax)],
fd_spec_block = [$sub_block(8)]
%;
%FI
MACRO
file_data_block = BLOCK [file_data_block_size]
FIELD (file_data_fields) %;
MACRO
buffer_data_block = BLOCK [buffer_data_block_size]
FIELD (buffer_data_fields) %;
MACRO
file_name_block = BLOCK [file_name_fields_size]
FIELD (file_name_fields) %;
!
! Equated symbols:
!
LITERAL
remote_buffer_length = 512,
remote_buffer_allocation = CH$ALLOCATION (remote_buffer_length,8) * %UPVAL;
!
! Operating System Interface Definitions
!
%IF %SWITCHES(TOPS20) %THEN
LITERAL
page_size = 512,
bytes_per_page = 5 * page_size;
%FI
LITERAL
max_line_length = 255;
!
! FILE DATA BLOCK Structure Field Names
!
$FIELD
file_data_fields =
SET
file_sys_spec_fields, ! system specific fields
fd_access = [$TINY_INTEGER], ! Accessing method
fd_byte_size = [$TINY_INTEGER], ! Byte size as per format
fd_error = [$INTEGER], ! Error code
fd_current_position = [$INTEGER], ! Current byte offset as set by
! READ, SEEK, SKIP, or WRITE
fd_file_position = [$INTEGER], ! Position of next read from file
fd_length = [$INTEGER], ! Size of file in bytes
fd_current_buffer = [$ADDRESS], ! Address of current BD block
fd_append_in_progress = [$BIT], ! Seek to EOF done for APPEND
fd_abort = [$BIT], ! Do not save file on close
fd_delete = [$BIT], ! Delete file on close
fd_light_new_mail_bit = [$BIT] ! Light "new mail" bit on TOPS-10
TES;
LITERAL
file_data_block_size = $FIELD_SET_SIZE,
file_data_block_allocation = $FIELD_SET_UNITS;
!
! BUFFER DATA BLOCK Structure Field Names
!
%IF %SWITCHES(TOPS20) %THEN
$FIELD
buffer_data_fields =
SET
bd_next = [$ADDRESS], ! Address of next BD in ring
bd_address = [$ADDRESS], ! Buffer base address
bd_length = [$INTEGER], ! Buffer length in bytes
bd_allocation = [$INTEGER], ! Buffer size in allocation units
bd_file_position = [$INTEGER], ! Buffer position in file
bd_max_position = [$INTEGER], ! End of buffer position in file
bd_bias = [$INTEGER], ! Buffer bias to start of data
bd_current_position = [$INTEGER], ! Current position in buffer
bd_pointer = [$POINTER], ! Current pointer to buffer
bd_data_count = [$INTEGER], ! Bytes read/written in buffer
bd_remaining_count = [$INTEGER], ! Bytes yet to be read from
! or written to buffer
bd_valid = [$BIT], ! Buffer has valid data
bd_end_of_file = [$BIT] ! End of file flag
TES;
%ELSE
$FIELD
buffer_data_fields =
SET
bd_address = [$INTEGER], !$bfadr
bd_pointer = [$INTEGER], !$bfptr
bd_remaining_count = [$INTEGER], !$bfcnt
bd_valid = [$BIT],
bd_end_of_file = [$BIT]
TES;
%FI
LITERAL
buffer_data_block_size = $FIELD_SET_SIZE,
buffer_data_block_allocation = $FIELD_SET_UNITS;
!
! File name block fields
!
$FIELD
file_name_fields =
SET
fn_length = [$INTEGER], ! Length of file specification string
fn_pointer = [$POINTER] ! Pointer file spec string
TES;
LITERAL
file_name_fields_size = $FIELD_SET_SIZE,
file_name_fields_allocation = $FIELD_SET_UNITS;
%IF %SWITCHES(TOPS10) %THEN
!
! This macro computes the width of a bit mask
!
MACRO
wid (mask) = %NBITSU(mask) - (%NBITSU((mask) AND - (mask)) - 1) %,
pos (mask) = (%NBITSU((mask) AND - (mask)) - 1) %,
pw (mask) = pos(mask),wid(mask),0 %,
wrd = 0,36,0 %,
left_half = 18,18,0 %,
left_half_s = 18,18,1 %,
right_half = 0,18,0 %;
FIELD
filop_block_fields =
SET
filop_channel = [$fofnc, pw(fo$chn)],
filop_function = [$fofnc, pw(fo$fnc)],
filop_flags = [$fofnc, wrd],
filop_open_flags = [$foios, wrd],
filop_device = [$fodev, wrd],
filop_output_buffer_header = [$fobrh, left_half],
filop_input_buffer_header = [$fobrh, right_half],
filop_buffer_headers = [$fobrh, wrd],
filop_output_buffer_number = [$fonbf, left_half],
filop_input_buffer_number = [$fonbf, right_half],
filop_rename_pointer = [$foleb, left_half],
filop_lookup_pointer = [$foleb, right_half],
filop_enter_pointer = [$foleb, right_half],
filop_ppn = [$foppn, wrd],
filop_path_length = [$fopat, left_half],
filop_path_pointer = [$fopat, right_half],
filop_spec_length = [$fofsp, left_half],
filop_spec_block = [$fofsp, right_half]
TES;
FIELD
lookup_block_fields =
SET
lookup_name = [0, wrd],
lookup_ext = [1, left_half],
lookup_ppn = [3,wrd],
lookup_length = [3, left_half_s],
lookup_path = [3, right_half]
TES;
FIELD
extended_lookup_block_fields =
SET
exlookup_zero = [$rbcnt,left_half],
exlookup_count = [$rbcnt,right_half],
exlookup_ppn = [$rbppn,wrd],
exlookup_path = [$rbppn,wrd],
exlookup_name = [$rbnam,wrd],
exlookup_ext = [$rbext,left_half],
exlookup_create_udt = [$rbtim,wrd]
TES;
FIELD
path_block_fields =
SET
path_project = [$ptppn, left_half],
path_programmer = [$ptppn, right_half],
path_sfd = [$ptsfd, 0, 0, 0]
TES;
FIELD
spec_block_fields =
SET
spec_device = [$fofdv, wrd]
TES;
MACRO set_in_your_behalf(filop_block,lookup_block) =
BEGIN
LOCAL tmp;
IF .lookup_block[0,left_half] NEQ 0 THEN
tmp = .lookup_block[3,wrd]
ELSE
tmp = .lookup_block[$rbppn,wrd]; !get possible PPN
IF .tmp<left_half> EQL 0 THEN
tmp = .(.tmp + $ptppn); !from path block maybe
IF (filop_block[filop_ppn] = .tmp) NEQ 0 THEN
filop_block[filop_flags] = .filop_block[filop_flags] OR fo$prv;
END %;
%FI