JP Abgrall | ebd6bcf | 2014-06-11 23:46:42 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in |
| 12 | * the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 16 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 17 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 18 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 19 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 22 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 25 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #define _LARGEFILE64_SOURCE |
| 30 | |
| 31 | #include <fcntl.h> |
Elliott Hughes | 0f143a9 | 2015-02-19 22:22:48 -0800 | [diff] [blame] | 32 | #include <string.h> |
JP Abgrall | ebd6bcf | 2014-06-11 23:46:42 -0700 | [diff] [blame] | 33 | |
| 34 | #include <f2fs_fs.h> |
| 35 | #include <f2fs_format_utils.h> |
| 36 | |
| 37 | #include <sparse/sparse.h> |
| 38 | |
| 39 | struct selabel_handle; |
| 40 | |
| 41 | #include "make_f2fs.h" |
| 42 | |
| 43 | extern void flush_sparse_buffs(); |
| 44 | |
| 45 | struct f2fs_configuration config; |
| 46 | struct sparse_file *f2fs_sparse_file; |
| 47 | extern int dlopenf2fs(); |
| 48 | |
| 49 | static void reset_f2fs_info() { |
| 50 | // Reset all the global data structures used by make_f2fs so it |
| 51 | // can be called again. |
| 52 | memset(&config, 0, sizeof(config)); |
| 53 | config.fd = -1; |
| 54 | if (f2fs_sparse_file) { |
| 55 | sparse_file_destroy(f2fs_sparse_file); |
| 56 | f2fs_sparse_file = NULL; |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | int make_f2fs_sparse_fd(int fd, long long len, |
| 61 | const char *mountpoint, struct selabel_handle *sehnd) |
| 62 | { |
| 63 | if (dlopenf2fs() < 0) { |
| 64 | return -1; |
| 65 | } |
| 66 | reset_f2fs_info(); |
| 67 | f2fs_init_configuration(&config); |
| 68 | len &= ~((__u64)F2FS_BLKSIZE); |
| 69 | config.total_sectors = len / config.sector_size; |
| 70 | config.start_sector = 0; |
| 71 | f2fs_sparse_file = sparse_file_new(F2FS_BLKSIZE, len); |
| 72 | f2fs_format_device(); |
| 73 | sparse_file_write(f2fs_sparse_file, fd, /*gzip*/0, /*sparse*/1, /*crc*/0); |
| 74 | sparse_file_destroy(f2fs_sparse_file); |
| 75 | flush_sparse_buffs(); |
| 76 | f2fs_sparse_file = NULL; |
| 77 | return 0; |
| 78 | } |