////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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// Filename: kfildes.h
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// Filename: kfildes.h
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//
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//
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// Project: CMod S6 System on a Chip, ZipCPU demonstration project
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// Project: CMod S6 System on a Chip, ZipCPU demonstration project
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//
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//
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// Purpose: Defines a "File Descriptor" from the standpoint of the kernel.
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// Purpose: Defines a "File Descriptor" from the standpoint of the kernel.
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// Inside the kernel, each process has an array of these file
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// Inside the kernel, each process has an array of these file
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// descriptors. Each file descriptor contains a pointer to the file
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// descriptors. Each file descriptor contains a pointer to the file
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// itself (typically a SYSPIPE), as well as to a device structure of
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// itself (typically a SYSPIPE), as well as to a device structure of
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// function pointers that can be used to operator on the file pointer.
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// function pointers that can be used to operator on the file pointer.
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//
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//
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//
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//
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// Creator: Dan Gisselquist, Ph.D.
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// Creator: Dan Gisselquist, Ph.D.
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// Gisselquist Technology, LLC
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// Gisselquist Technology, LLC
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//
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//
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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// Copyright (C) 2015-2016, Gisselquist Technology, LLC
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// Copyright (C) 2015-2016, Gisselquist Technology, LLC
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//
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//
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// This program is free software (firmware): you can redistribute it and/or
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// This program is free software (firmware): you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as published
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// modify it under the terms of the GNU General Public License as published
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// by the Free Software Foundation, either version 3 of the License, or (at
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// by the Free Software Foundation, either version 3 of the License, or (at
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// your option) any later version.
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// your option) any later version.
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//
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//
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
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// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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// for more details.
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//
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//
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// You should have received a copy of the GNU General Public License along
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// You should have received a copy of the GNU General Public License along
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// with this program. (It's in the $(ROOT)/doc directory, run make with no
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// with this program. (It's in the $(ROOT)/doc directory, run make with no
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// target there if the PDF file isn't present.) If not, see
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// target there if the PDF file isn't present.) If not, see
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// <http://www.gnu.org/licenses/> for a copy.
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// <http://www.gnu.org/licenses/> for a copy.
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//
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//
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// License: GPL, v3, as defined and found on www.gnu.org,
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// License: GPL, v3, as defined and found on www.gnu.org,
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// http://www.gnu.org/licenses/gpl.html
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// http://www.gnu.org/licenses/gpl.html
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//
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//
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//
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//
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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//
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//
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#ifndef KFILDES_H
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#ifndef KFILDES_H
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#define KFILDES_H
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#define KFILDES_H
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struct TASK_S;
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struct TASK_S;
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#define FILENO_STDIN 0
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#define FILENO_STDIN 0
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#define FILENO_STDOUT 1
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#define FILENO_STDOUT 1
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#define FILENO_STDERR 2
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#define FILENO_STDERR 2
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#define FILENO_AUX 3
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#define FILENO_AUX 3
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#define MAX_FILDES 4
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#define MAX_FILDES 4
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typedef void (*RWFDFUN)(struct TASK_S *,int, void *, int);
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typedef void (*RWFDFUN)(struct TASK_S *,int, void *, int);
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typedef struct {
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typedef struct {
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void (*write)(struct TASK_S *tsk, int id, void *buf, int len);
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void (*write)(struct TASK_S *tsk, int id, void *buf, int len);
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void (*read)( struct TASK_S *tsk, int id, void *buf, int len);
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void (*read)( struct TASK_S *tsk, int id, void *buf, int len);
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void (*close)(struct TASK_S *tsk, int id);
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void (*close)(struct TASK_S *tsk, int id);
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} KDEVICE;
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} KDEVICE;
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typedef struct {
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typedef struct {
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int id;
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int id;
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KDEVICE *dev;
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KDEVICE *dev;
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} KFILDES;
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} KFILDES;
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#ifndef NULL
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#ifndef NULL
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#define NULL (void *)0
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#define NULL (void *)0
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#endif
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#endif
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KFILDES *kopen(int id, KDEVICE *dev);
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#endif
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#endif
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