77 lines
1.4 KiB
C
77 lines
1.4 KiB
C
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/* ==== fd.h ============================================================
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* Copyright (c) 1993 by Chris Provenzano, proven@athena.mit.edu
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*
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* Description : Basic fd header.
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*
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* 1.00 93/08/14 proven
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* -Started coding this file.
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*
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* 1.01 93/11/13 proven
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* -The functions readv() and writev() added
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*/
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/*
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* New pthread types.
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*/
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enum fd_type {
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FD_NT, /* Not tested */
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FD_NIU, /* Known to be not in use */
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FD_HALF_DUPLEX, /* Files, and seeking devices */
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FD_FULL_DUPLEX /* pipes, sockets, drivers, ... */
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};
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#define FD_READ 0x1
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#define FD_WRITE 0x2
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#define FD_RDWR (FD_READ | FD_WRITE)
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struct fd_ops {
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int (*write)();
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int (*read)();
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int (*close)();
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int (*fcntl)();
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int (*writev)();
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int (*readv)();
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};
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union fd_data {
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void *ptr;
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int i;
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};
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struct fd_table_entry {
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struct pthread_queue r_queue;
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struct pthread_queue w_queue;
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struct pthread *r_owner;
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struct pthread *w_owner;
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semaphore lock;
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struct fd_table_entry *next;
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struct fd_ops *ops;
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enum fd_type type;
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int lockcount; /* Count for FILE locks */
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int count;
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/* data that needs to be passed to the type dependent fd */
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int flags;
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union fd_data fd;
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};
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/*
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* Important data structure
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*/
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extern struct fd_table_entry *fd_table[];
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extern int dtablesize;
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/*
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* New functions
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*/
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__BEGIN_DECLS
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#if defined(PTHREAD_KERNEL)
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#endif
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__END_DECLS
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