49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
/*
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* v p o r t . h -- Virtual ports management
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*
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* Copyright © 1998 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
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*
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*
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* Permission to use, copy, and/or distribute this software and its
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* documentation for any purpose and without fee is hereby granted, provided
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* that both the above copyright notice and this permission notice appear in
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* all copies and derived works. Fees for distribution or use of this
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* software or derived works may only be charged with express written
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* permission of the copyright holder.
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* This software is provided ``as is'' without express or implied warranty.
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*
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* This software is a derivative work of other copyrighted softwares; the
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* copyright notices of these softwares are placed in the file COPYRIGHTS
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*
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*
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* Author: Erick Gallesio [eg@unice.fr]
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* Creation date: 26-Oct-1998 15:55
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* Last file update: 29-Oct-1998 14:40
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*
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*/
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#define VPORT_SIGNATURE 0xabcdef01 /* Magic number for a virtual port */
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#define READING 01
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#define WRITING 02
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#define VIRTUAL_PORTP(f) (((struct str_iob *) f)->signature == VPORT_SIGNATURE)
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/* There is one structure for input AND ouput vport. This should allow
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* to esily define RW virtual port in the future
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*/
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struct virtual_iob {
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long int signature;
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short flag;
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int ungetted;
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SCM getc;
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SCM readyp;
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SCM eofp;
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SCM close;
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SCM putc;
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SCM puts;
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SCM flush;
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};
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