mapfile.c File Reference

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "mapfile.h"
#include "debug.h"
#include <sys/mman.h>

Go to the source code of this file.

Functions
static int	fileOpen (char *name, Uint *textlen, BOOL writefile)
	Opens a file and reads gets its size. More...
static void *	fileParts (int fd, Uint offset, Uint len, BOOL writemap)
	Maps an open file into RAM memory. More...
static void *	genfile2String (char *name, Uint *textlen, BOOL writefile, BOOL writemap)
	Opens a file and maps it into memory. More...
void	freetextspace (Uchar *text, Uint textlen)
	Frees the memory used by the mapping of a file. More...
void *	file2String (char *name, Uint *textlen)
	Opens a file and maps it into memory. More...

Function Documentation

void* file2String	(	char *	name,
		Uint *	textlen
	)

Opens a file and maps it into memory.

Parameters

[in]	name	name and path of the file to open.
[out]	textlen	size in bytes of the file.

Returns

a pointer to the memory map area.

Definition at line 237 of file mapfile.c.

static int fileOpen ( char *  name, Uint *  textlen, BOOL  writefile  )

static

Opens a file and reads gets its size.

Parameters

[in]	name	name and path of the file to open.
[out]	textlen	size in bytes of the file.
[in]	writefile	flag indicating if the file shall be open with write aceess.

Returns

descriptor of the open file.

Definition at line 157 of file mapfile.c.

static void* fileParts ( int  fd, Uint  offset, Uint  len, BOOL  writemap  )

static

Maps an open file into RAM memory.

Parameters

[in]	fd	file descriptor of the file to map.
[in]	offset	start the map at this offset from the file begining.
[in]	len	length of the section of the file to map.
[in]	writemap	flag indicating if it will be possible to write the file though the memory map.

Returns

a pointer to the memory map area.

Definition at line 185 of file mapfile.c.

void freetextspace	(	Uchar *	text,
		Uint	textlen
	)

Frees the memory used by the mapping of a file.

Parameters

[in]	text	pointer to the mapped file.
[in]	textlen	size in bytes of the mapped file memory area.

Definition at line 225 of file mapfile.c.

static void* genfile2String ( char *  name, Uint *  textlen, BOOL  writefile, BOOL  writemap  )

static

Opens a file and maps it into memory.

Parameters

[in]	name	name and path of the file to open.
[out]	textlen	size in bytes of the file.
[in]	writefile	flag indicating if the file shall be open with write aceess.
[in]	writemap	flag indicating if it will be possible to write the file though the memory map.

Returns

a pointer to the memory map area.

Definition at line 209 of file mapfile.c.