iosupport.h

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//---------------------------------------------------------------------------------
#ifndef __iosupp_h__
#define __iosupp_h__
//---------------------------------------------------------------------------------
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <reent.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
 
enum    {
    STD_IN,
    STD_OUT,
    STD_ERR,
    STD_MAX = 16
};
 
 
typedef struct {
    int device;
    void *fileStruct;
} __handle;
 
/* Directory iterator for mantaining state between dir* calls */
typedef struct {
    int device;
    void *dirStruct;
} DIR_ITER;
 
typedef struct {
    const char *name;
    int structSize;
    int (*open_r)(struct _reent *r, void *fileStruct, const char *path, int flags, int mode);
    int (*close_r)(struct _reent *r, int fd);
    ssize_t (*write_r)(struct _reent *r, int fd, const char *ptr, size_t len);
    ssize_t (*read_r)(struct _reent *r, int fd, char *ptr, size_t len);
    off_t (*seek_r)(struct _reent *r, int fd, off_t pos, int dir);
    int (*fstat_r)(struct _reent *r, int fd, struct stat *st);
    int (*stat_r)(struct _reent *r, const char *file, struct stat *st);
    int (*link_r)(struct _reent *r, const char *existing, const char  *newLink);
    int (*unlink_r)(struct _reent *r, const char *name);
    int (*chdir_r)(struct _reent *r, const char *name);
    int (*rename_r) (struct _reent *r, const char *oldName, const char *newName);
    int (*mkdir_r) (struct _reent *r, const char *path, int mode);
        
    int dirStateSize;
    
    DIR_ITER* (*diropen_r)(struct _reent *r, DIR_ITER *dirState, const char *path);
    int (*dirreset_r)(struct _reent *r, DIR_ITER *dirState);
    int (*dirnext_r)(struct _reent *r, DIR_ITER *dirState, char *filename, struct stat *filestat);
    int (*dirclose_r)(struct _reent *r, DIR_ITER *dirState);
    int (*statvfs_r)(struct _reent *r, const char *path, struct statvfs *buf);
    int (*ftruncate_r)(struct _reent *r, int fd, off_t len);
    int (*fsync_r)(struct _reent *r, int fd);
 
    void *deviceData;
 
    int (*chmod_r)(struct _reent *r, const char *path, mode_t mode);
    int (*fchmod_r)(struct _reent *r, int fd, mode_t mode);
 
} devoptab_t;
    
extern const devoptab_t *devoptab_list[];
 
typedef struct {
    void *(*sbrk_r) (struct _reent *ptr, ptrdiff_t incr);
    int (*lock_init) (int *lock,int recursive);
    int (*lock_close) (int *lock);
    int (*lock_release) (int *lock);
    int (*lock_acquire) (int *lock);
    void (*malloc_lock) (struct _reent *ptr);
    void (*malloc_unlock) (struct _reent *ptr);
    void (*exit) ( int rc );
    int (*gettod_r) (struct _reent *ptr, struct timeval *tp, struct timezone *tz);
} __syscalls_t; 
    
extern __syscalls_t __syscalls;
    
int AddDevice( const devoptab_t* device);
int FindDevice(const char* name);
int RemoveDevice(const char* name);
void setDefaultDevice( int device );
const devoptab_t* GetDeviceOpTab (const char *name);
    
#ifdef __cplusplus
}
#endif
 
//---------------------------------------------------------------------------------
#endif // __iosupp_h__
//---------------------------------------------------------------------------------