ref/system_8h_source.html

#ifndef __LIBDRAGON_SYSTEM_H

#define __LIBDRAGON_SYSTEM_H


#define MAX_FILESYSTEMS     10

#define MAX_OPEN_HANDLES    4096


#ifdef __cplusplus

extern "C" {

#endif


#include <dir.h>

#include <sys/stat.h>


typedef struct

{

    void *(*open)( char *name, int flags );

    int (*fstat)( void *file, struct stat *st );

    int (*stat)( char *name, struct stat *st );

    int (*lseek)( void *file, int ptr, int dir );

    int (*read)( void *file, uint8_t *ptr, int len );

    int (*write)( void *file, uint8_t *ptr, int len );

    int (*close)( void *file );

    int (*unlink)( char *name );

    int (*findfirst)( char *path, dir_t *dir );


    #ifndef SYSTEM_NO_DEPRECATED

    __attribute__((deprecated("Use findnext2 instead")))

    #endif

    int (*findnext)( dir_t *dir );


    int (*findnext2)( const char *path, dir_t *dir );

    int (*ftruncate)( void *file, int length );

    int (*mkdir)( char *path, mode_t mode );

    int (*ioctl)(void *file, unsigned long cmd, void *argp);

} filesystem_t;


typedef struct

{

    int (*stdin_read)( char *data, unsigned int len );

    int (*stdout_write)( char *data, unsigned int len );

    int (*stderr_write)( char *data, unsigned int len );

} stdio_t;


int attach_filesystem( const char * const prefix, filesystem_t *filesystem );


int detach_filesystem( const char * const prefix );


int hook_stdio_calls( stdio_t *stdio_calls );


int unhook_stdio_calls( stdio_t *stdio_calls );


int hook_time_call( time_t (*time_fn)( void ) );


int unhook_time_call( time_t (*time_fn)( void ) );


#ifdef __cplusplus

}

#endif


#endif

dir.h
Directory handling.

hook_time_call
int hook_time_call(time_t(*time_fn)(void))
Hook into gettimeofday with a current time callback.
Definition system.c:1428

hook_stdio_calls
int hook_stdio_calls(stdio_t *stdio_calls)
Hook into stdio for STDIN, STDOUT and STDERR callbacks.
Definition system.c:1394

unhook_stdio_calls
int unhook_stdio_calls(stdio_t *stdio_calls)
Unhook from stdio.
Definition system.c:1414

unhook_time_call
int unhook_time_call(time_t(*time_fn)(void))
Unhook from gettimeofday current time callback.
Definition system.c:1440

detach_filesystem
int detach_filesystem(const char *const prefix)
Unregister a filesystem from newlib.
Definition system.c:366

attach_filesystem
int attach_filesystem(const char *const prefix, filesystem_t *filesystem)
Register a filesystem with newlib.
Definition system.c:305

dir_t
Directory entry structure.
Definition dir.h:37

filesystem_t
Filesystem hook structure.
Definition system.h:66

stdio_t
Standard I/O hook structure.
Definition system.h:242

read
int read(int fileno, char *ptr, int len)
Read data from a file.
Definition system.c:943

lseek
int lseek(int file, int ptr, int dir)
Seek to a location in a file.
Definition system.c:841

ioctl
int ioctl(int fd, unsigned long cmd, void *argp)
Perform IO Control Request.
Definition system.c:1174

mkdir
int mkdir(const char *path, mode_t mode)
Create a directory.
Definition system.c:1373

fstat
int fstat(int fileno, struct stat *st)
Return stats on an open file handle.
Definition system.c:689

stat
int stat(const char *file, struct stat *st)
Return file stats based on a file name.
Definition system.c:1063

close
int close(int fildes)
Close a file.
Definition system.c:593

ftruncate
int ftruncate(int file, off_t length)
Truncate a file to the specified length.
Definition system.c:1271

unlink
int unlink(char *name)
Remove a file based on filename.
Definition system.c:1135

write
int write(int file, char *ptr, int len)
Write data to a file.
Definition system.c:1204