#ifndef __LINUXMT_PIPE_FS_I_H
#define __LINUXMT_PIPE_FS_I_H

#include <linuxmt/chqueue.h>

struct pipe_inode_info {
    struct ch_queue q;
/*    char *base;
    struct wait_queue wait;
    unsigned int size, start;
	  size_t len;*/
    unsigned int lock;
    unsigned int rd_openers;
    unsigned int wr_openers;
    unsigned int readers;
    unsigned int writers;
};

#define PAGE_SIZE 512
#define PIPE_BUF 512

#define PIPE_WAIT(inode)	((inode).u.pipe_i.q.wait)
#define PIPE_BASE(inode)	((inode).u.pipe_i.q.base)
#define PIPE_START(inode)	((inode).u.pipe_i.q.start)
#define PIPE_LEN(inode)		((inode).u.pipe_i.q.len)
#define PIPE_RD_OPENERS(inode)	((inode).u.pipe_i.rd_openers)
#define PIPE_WR_OPENERS(inode)	((inode).u.pipe_i.wr_openers)
#define PIPE_READERS(inode)	((inode).u.pipe_i.readers)
#define PIPE_WRITERS(inode)	((inode).u.pipe_i.writers)
#define PIPE_LOCK(inode)	((inode).u.pipe_i.lock)

#define PIPE_EMPTY(inode)	(PIPE_LEN(inode)==0)
#define PIPE_FULL(inode)	(PIPE_LEN(inode)==PIPE_BUF)
#define PIPE_FREE(inode)	(PIPE_BUF - PIPE_LEN(inode))
#define PIPE_END(inode)		((PIPE_START(inode)+PIPE_LEN(inode))&\
							   (PIPE_BUF-1))
#define PIPE_MAX_RCHUNK(inode)	(PIPE_BUF - PIPE_START(inode))
#define PIPE_MAX_WCHUNK(inode)	(PIPE_BUF - PIPE_END(inode))

#endif
