| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #define _LARGEFILE64_SOURCE |
| |
| #include <fcntl.h> |
| #include <string.h> |
| |
| #include <f2fs_fs.h> |
| #include <f2fs_format_utils.h> |
| |
| #include <sparse/sparse.h> |
| |
| struct selabel_handle; |
| |
| #include "make_f2fs.h" |
| |
| extern void flush_sparse_buffs(); |
| |
| struct f2fs_configuration config; |
| struct sparse_file *f2fs_sparse_file; |
| extern int dlopenf2fs(); |
| |
| static void reset_f2fs_info() { |
| // Reset all the global data structures used by make_f2fs so it |
| // can be called again. |
| memset(&config, 0, sizeof(config)); |
| config.fd = -1; |
| if (f2fs_sparse_file) { |
| sparse_file_destroy(f2fs_sparse_file); |
| f2fs_sparse_file = NULL; |
| } |
| } |
| |
| int make_f2fs_sparse_fd(int fd, long long len, |
| const char *mountpoint, struct selabel_handle *sehnd) |
| { |
| if (dlopenf2fs() < 0) { |
| return -1; |
| } |
| reset_f2fs_info(); |
| f2fs_init_configuration(&config); |
| len &= ~((__u64)F2FS_BLKSIZE); |
| config.total_sectors = len / config.sector_size; |
| config.start_sector = 0; |
| f2fs_sparse_file = sparse_file_new(F2FS_BLKSIZE, len); |
| f2fs_format_device(); |
| sparse_file_write(f2fs_sparse_file, fd, /*gzip*/0, /*sparse*/1, /*crc*/0); |
| sparse_file_destroy(f2fs_sparse_file); |
| flush_sparse_buffs(); |
| f2fs_sparse_file = NULL; |
| return 0; |
| } |