75 lines
2.8 KiB
Plaintext
75 lines
2.8 KiB
Plaintext
MODULE unix; (* connect to unix host *)
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IMPORT SYSTEM, _unix;
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(* provide some Oberon friendly POSIX without need for SYSTEM *)
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CONST RTLD_LAZY* = 1;
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O_RDONLY* = 0;
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O_NEWFILE* = 0C2H; (* O_RDWR | O_CREAT | O_EXCL *)
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(* O_RDONLY=0, O_WRONLY=1, O_RDWR=2, O_CREAT=0x40, O_EXCL=0x80, O_TRUNC=0x200 *)
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FD_SETSIZE* = 1024; (* fd for select() must be smaller than FD_SETSIZE *)
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BIT_DEPTH* = _unix.BIT_DEPTH;
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LEN_FD_SET = FD_SETSIZE DIV BIT_DEPTH;
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TYPE
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timespec* = RECORD
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tv_sec*, tv_usec* :INTEGER
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END;
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fd_set* = POINTER TO RECORD (* for select() *)
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bits* :ARRAY LEN_FD_SET OF SET (* 1024 bits *)
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END;
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VAR
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dlopen* :PROCEDURE [linux] (name, flags :INTEGER) :INTEGER;
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dlsym* :PROCEDURE [linux] (p, name :INTEGER) :INTEGER;
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dlclose* :PROCEDURE [linux] (p :INTEGER) :INTEGER;
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close* :PROCEDURE [linux] (fd :INTEGER) :INTEGER;
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exit* :PROCEDURE [linux] (n :INTEGER);
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malloc* :PROCEDURE [linux] (sz :INTEGER) :INTEGER;
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PROCEDURE open* (path :ARRAY OF CHAR; flag, perm :INTEGER) :INTEGER;
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BEGIN RETURN _unix._open (SYSTEM.ADR(path[0]), flag, perm) END open;
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PROCEDURE read* (fd :INTEGER; VAR buf :ARRAY OF BYTE; len :INTEGER) :INTEGER;
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BEGIN RETURN _unix._read (fd, SYSTEM.ADR(buf[0]), len) END read;
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PROCEDURE readByte* (fd :INTEGER; VAR n :BYTE) :INTEGER;
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BEGIN RETURN _unix._read (fd, SYSTEM.ADR(n), 1) END readByte;
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PROCEDURE write* (fd :INTEGER; buf :ARRAY OF BYTE; len :INTEGER) :INTEGER;
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BEGIN RETURN _unix._write (fd, SYSTEM.ADR(buf[0]), len) END write;
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PROCEDURE writeByte* (fd :INTEGER; n :BYTE) :INTEGER;
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BEGIN RETURN _unix._write (fd, SYSTEM.ADR(n), 1) END writeByte;
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PROCEDURE FD_ZERO* (VAR selectSet :fd_set);
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VAR i :INTEGER;
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BEGIN FOR i := 0 TO LEN_FD_SET-1 DO selectSet.bits[i] := {} END END FD_ZERO;
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PROCEDURE FD_SET* (fd :INTEGER; VAR selectSet :fd_set); (* set fd bit in a select() fd_set *)
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BEGIN INCL(selectSet.bits[fd DIV BIT_DEPTH], fd MOD BIT_DEPTH)
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END FD_SET;
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PROCEDURE select* (cnt :INTEGER; readfds, writefds, exceptfds :fd_set; timeout :timespec) :INTEGER;
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VAR n1, n2, n3 :INTEGER;
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BEGIN
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n1 := 0; IF readfds # NIL THEN n1 := SYSTEM.ADR (readfds.bits[0]) END;
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n2 := 0; IF writefds # NIL THEN n2 := SYSTEM.ADR (writefds.bits[0]) END;
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n3 := 0; IF exceptfds # NIL THEN n3 := SYSTEM.ADR (exceptfds.bits[0]) END;
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RETURN _unix._select (cnt, n1, n2, n3, SYSTEM.ADR(timeout))
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END select;
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PROCEDURE finish*;
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BEGIN _unix.finish; END finish;
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BEGIN
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dlopen := _unix._dlopen;
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dlsym := _unix._dlsym;
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dlclose := _unix._dlclose;
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close := _unix._close;
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exit := _unix._exit;
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malloc := _unix._malloc;
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END unix.
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