235         _cleanup_free_ struct fiemap *fiemap = NULL;  in calculate_swap_file_offset()  local
259         r = read_fiemap(fd, &fiemap);  in calculate_swap_file_offset()
263         *ret_offset = fiemap->fm_extents[0].fe_physical / page_size();  in calculate_swap_file_offset()
514 int read_fiemap(int fd, struct fiemap **ret) {  in read_fiemap()
515         _cleanup_free_ struct fiemap *fiemap = NULL, *result_fiemap = NULL;  in read_fiemap()  local
519         const size_t n_extra = DIV_ROUND_UP(sizeof(struct fiemap), sizeof(struct fiemap_extent));  in read_fiemap()
528         fiemap = calloc(n_extra, sizeof(struct fiemap_extent));  in read_fiemap()
529         if (!fiemap)  in read_fiemap()
542                 *fiemap = (struct fiemap) {  in read_fiemap()
549                 if (ioctl(fd, FS_IOC_FIEMAP, fiemap) < 0)  in read_fiemap()
553                 if (fiemap->fm_mapped_extents == 0)  in read_fiemap()
558 …if (!greedy_realloc0((void**) &fiemap, n_extra + fiemap->fm_mapped_extents, sizeof(struct fiemap_e…  in read_fiemap()
561                 fiemap->fm_extent_count = fiemap->fm_mapped_extents;  in read_fiemap()
562                 fiemap->fm_mapped_extents = 0;  in read_fiemap()
564                 if (ioctl(fd, FS_IOC_FIEMAP, fiemap) < 0)  in read_fiemap()
569 …               n_extra + result_extents + fiemap->fm_mapped_extents, sizeof(struct fiemap_extent)))  in read_fiemap()
573                        fiemap->fm_extents,  in read_fiemap()
574                        sizeof(struct fiemap_extent) * fiemap->fm_mapped_extents);  in read_fiemap()
576                 result_extents += fiemap->fm_mapped_extents;  in read_fiemap()
579                 if (_likely_(fiemap->fm_mapped_extents > 0)) {  in read_fiemap()
580                         uint32_t i = fiemap->fm_mapped_extents - 1;  in read_fiemap()
582                         fiemap_start = fiemap->fm_extents[i].fe_logical +  in read_fiemap()
583                                        fiemap->fm_extents[i].fe_length;  in read_fiemap()
585                         if (fiemap->fm_extents[i].fe_flags & FIEMAP_EXTENT_LAST)  in read_fiemap()
590         memcpy(result_fiemap, fiemap, sizeof(struct fiemap));  in read_fiemap()