dragonfs.h File Reference

DragonFS. More...

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Defines
#define	DFS_DEFAULT_LOCATION   0xB0101000
	Default filesystem location.
#define	MAX_OPEN_FILES   4
	Maximum open files in DragonFS.
#define	MAX_FILENAME_LEN   243
	Maximum filename length.
#define	MAX_DIRECTORY_DEPTH   100
	Maximum depth of directories supported.
#define	FILETYPE(x)   ((x) & 3)
	Macro to extract the file type from a DragonFS file flag.
DragonFS Return values
#define	DFS_ESUCCESS   0
	Success.
#define	DFS_EBADINPUT   -1
	Input parameters invalid.
#define	DFS_ENOFILE   -2
	File does not exist.
#define	DFS_EBADFS   -3
	Bad filesystem.
#define	DFS_ENOMEM   -4
	No memory for operation.
#define	DFS_EBADHANDLE   -5
	Invalid file handle.
DragonFS file type flags
#define	FLAGS_FILE   0x0
	This is a file entry.
#define	FLAGS_DIR   0x1
	This is a directory entry.
#define	FLAGS_EOF   0x2
	This is the end of a directory list.
Functions
int	dfs_init (uint32_t base_fs_loc)
	Initialize the filesystem.
int	dfs_chdir (const char *const path)
	Change directories to the specified path.
int	dfs_dir_findfirst (const char *const path, char *buf)
	Find the first file or directory in a directory listing.
int	dfs_dir_findnext (char *buf)
	Find the next file or directory in a directory listing.
int	dfs_open (const char *const path)
	Open a file given a path.
int	dfs_read (void *const buf, int size, int count, uint32_t handle)
	Read data from a file.
int	dfs_seek (uint32_t handle, int offset, int origin)
	Seek to an offset in the file.
int	dfs_tell (uint32_t handle)
	Return the current offset into a file.
int	dfs_close (uint32_t handle)
	Close an already open file handle.
int	dfs_eof (uint32_t handle)
	Return whether the end of file has been reached.
int	dfs_size (uint32_t handle)
	Return the file size of an open file.

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Detailed Description

DragonFS.