sion_fd.c File Reference

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <assert.h>
#include "sion_lock.h"
#include "sion_fd.h"

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Data Structures
struct	_sion_fddata

Macros
#define	_XOPEN_SOURCE   700
#define	sion_assert(expr, args)   (assert(expr))
#define	SION_FDDATA_INITIALIZER   {0,0,-1,NULL}

Functions
int	_sion_newvcd (void *data, int type)
int	_sion_freevcd (int sid)
void *	_sion_vcdtovcon (int sid)
int	_sion_vcdtype (int sid)
int	_sion_reassignvcd (int sid, void *data, int type)
int	_sion_new_fd (sion_fddata *fdd, void *data, int type)
int	_sion_set_fd (sion_fddata *fdd, int fd, void *data, int type, char *text)
int	_sion_free_fd (sion_fddata *fdd, int fd, char *text)
void *	_sion_fd2ptr (sion_fddata *fdd, int fd)
int	_sion_fd2type (sion_fddata *fdd, int fd, char *text)
int	_sion_ptr2fd (sion_fddata *fdd, void *ptr, char *text)
int	_sion_reassign_fd (sion_fddata *fdd, int fd, void *data, int type, char *text)
int	_sion_fd_size (sion_fddata *fdd)

Detailed Description

Author

Th.Eickermann & W.Frings (December 2000)

Definition in file sion_fd.c.

Function Documentation

_sion_fd2ptr()

void* _sion_fd2ptr	(	sion_fddata *	fdd,
		int	fd
	)

Returns

The data associated with a descriptor

Definition at line 247 of file sion_fd.c.

Referenced by _sion_vcdtovcon().

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_sion_fd2type()

int _sion_fd2type	(	sion_fddata *	fdd,
		int	fd,
		char *	text
	)

Returns

The type (of data) associated with a descriptor

Definition at line 265 of file sion_fd.c.

Referenced by _sion_vcdtype().

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_sion_fd_size()

int _sion_fd_size

(

sion_fddata *

fdd

)

Returns

The size of the descriptor array.

Definition at line 339 of file sion_fd.c.

_sion_free_fd()

int _sion_free_fd	(	sion_fddata *	fdd,
		int	fd,
		char *	text
	)

free a descriptor

Definition at line 213 of file sion_fd.c.

Referenced by _sion_freevcd().

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_sion_freevcd()

int _sion_freevcd

(

int

sid

)

Wrapper for _sion_free_fd()

Definition at line 48 of file sion_fd.c.

References _sion_free_fd().

_sion_new_fd()

int _sion_new_fd	(	sion_fddata *	fdd,
		void *	data,
		int	type
	)

Get a new descriptor and assign data/type to it.

Returns

The new descriptor or -1 in case of an error.

Definition at line 76 of file sion_fd.c.

Referenced by _sion_newvcd().

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_sion_newvcd()

int _sion_newvcd	(	void *	data,
		int	type
	)

Wrapper for _sion_new_fd()

Definition at line 43 of file sion_fd.c.

References _sion_new_fd().

_sion_ptr2fd()

int _sion_ptr2fd	(	sion_fddata *	fdd,
		void *	ptr,
		char *	text
	)

Returns

The smallest valid descriptor, that has 'data' associated to or -1 if there is none

Definition at line 289 of file sion_fd.c.

_sion_reassign_fd()

int _sion_reassign_fd	(	sion_fddata *	fdd,
		int	fd,
		void *	data,
		int	type,
		char *	text
	)

Assign new data/type to descriptor fd, where fd must be in use

Returns

1 if successful, 0 otherwise

Definition at line 315 of file sion_fd.c.

Referenced by _sion_reassignvcd().

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_sion_reassignvcd()

int _sion_reassignvcd	(	int	sid,
		void *	data,
		int	type
	)

Wrapper for _sion_reassign_fd()

Definition at line 63 of file sion_fd.c.

References _sion_reassign_fd().

_sion_set_fd()

int _sion_set_fd	(	sion_fddata *	fdd,
		int	fd,
		void *	data,
		int	type,
		char *	text
	)

Add data/type to the descriptor fd. fd must be non-negative and not be in use

Returns

1 if successful, 0 otherwise

Definition at line 148 of file sion_fd.c.

_sion_vcdtovcon()

void* _sion_vcdtovcon

(

int

sid

)

Wrapper for _sion_fd2ptr()

Definition at line 53 of file sion_fd.c.

References _sion_fd2ptr().

Referenced by fsion_get_fileno_c(), sion_fread(), and sion_get_position().

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_sion_vcdtype()

int _sion_vcdtype

(

int

sid

)

Wrapper for _sion_fd2type()

Definition at line 58 of file sion_fd.c.

References _sion_fd2type().

Referenced by fsion_get_fileno_c(), sion_fread(), and sion_get_position().

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