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 struct f2fs_configuration c;
46 struct sparse_file *f2fs_sparse_file;
47 extern int dlopenf2fs();
49 static void reset_f2fs_info() {
50 memset(&c, 0, sizeof(c));
51 if (f2fs_sparse_file) {
52 sparse_file_destroy(f2fs_sparse_file);
53 f2fs_sparse_file = NULL;
57 int make_f2fs_sparse_fd(int fd, long long len,
58 const char *mountpoint, struct selabel_handle *sehnd)
60 if (dlopenf2fs() < 0) {
64 f2fs_init_configuration();
65 len &= ~((__u64)(F2FS_BLKSIZE - 1));
66 c.sector_size = DEFAULT_SECTOR_SIZE;
67 c.total_sectors = len / c.sector_size;
69 f2fs_sparse_file = sparse_file_new(F2FS_BLKSIZE, len);
71 sparse_file_write(f2fs_sparse_file, fd, /*gzip*/0, /*sparse*/1, /*crc*/0);
72 sparse_file_destroy(f2fs_sparse_file);
74 f2fs_sparse_file = NULL;