1 #ifndef FILE_SET_SIZE_H
2 #define FILE_SET_SIZE_H
3 
4 /* Shrink/grow file. If file is grown, the new data is guaranteed to
5    be zeros. The file offset may be anywhere after this call.
6    Returns -1 if failed, 0 if successful. */
7 int file_set_size(int fd, off_t size);
8 /* Preallocate file to given size, without actually changing the size
9    reported by stat(). Returns 1 if ok, 0 if not supported by this filesystem,
10    -1 if error. */
11 int file_preallocate(int fd, off_t size);
12 
13 #endif
14