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#ifndef __FIEMAP_H__
#define __FIEMAP_H__
#include <linux/fiemap.h>
#include <sys/types.h>
#include <stdint.h>
/*
* Given a filled fiemap structure, extract the struct fiemap_extent
* which covers the loff offset.
* If index is not NULL, then it will be filled with the extent's index.
* If no extent is found, returns NULL and index is garbage.
* The returned value must not be used after fiemap is freed, and must not
* be freed directly either.
*/
struct fiemap_extent *get_extent(struct fiemap *fiemap, size_t loff,
unsigned int *index);
/*
* Extract the extents mapping of a file.
* May not return all extents if the file changed while this function is
* running.
*/
struct fiemap *do_fiemap(int fd);
/*
* Count how much of the area between start_off and end_off is shared.
*/
int fiemap_count_shared(int fd, size_t start_off, size_t end_off, uint64_t *shared);
#endif /* __FIEMAP_H__ */
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