2 * Copyright (C) 2014 The Android Open Source Project
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29 #define _LARGEFILE64_SOURCE
35 #include <f2fs_format_utils.h>
37 #include <sparse/sparse.h>
39 struct selabel_handle;
41 #include "make_f2fs.h"
43 extern void flush_sparse_buffs();
45 extern struct f2fs_configuration *c_dl;
46 struct sparse_file *f2fs_sparse_file;
47 extern int dlopenf2fs();
49 static void reset_f2fs_info() {
50 if (f2fs_sparse_file) {
51 sparse_file_destroy(f2fs_sparse_file);
52 f2fs_sparse_file = NULL;
56 int make_f2fs_sparse_fd(int fd, long long len,
57 const char *mountpoint, struct selabel_handle *sehnd)
59 if (dlopenf2fs() < 0) {
63 f2fs_init_configuration();
64 len &= ~((__u64)(F2FS_BLKSIZE - 1));
66 c_dl->devices[0].total_sectors = len / c_dl->devices[0].sector_size;
67 c_dl->sector_size = c_dl->devices[0].sector_size;
68 c_dl->sectors_per_blk = F2FS_BLKSIZE / c_dl->sector_size;
69 c_dl->total_sectors = c_dl->devices[0].total_sectors;
70 c_dl->start_sector = 0;
72 f2fs_sparse_file = sparse_file_new(F2FS_BLKSIZE, len);
74 sparse_file_write(f2fs_sparse_file, fd, /*gzip*/0, /*sparse*/1, /*crc*/0);
75 sparse_file_destroy(f2fs_sparse_file);
77 f2fs_sparse_file = NULL;