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 <asm/types.h> |
| 32 | #include <errno.h> |
| 33 | #include <linux/fs.h> |
| 34 | #include <stdio.h> |
| 35 | #include <stdlib.h> |
| 36 | #include <string.h> /* memset() */ |
| 37 | #include <sys/param.h> |
| 38 | #include <sys/stat.h> |
| 39 | #include <sys/types.h> |
| 40 | #include <fcntl.h> |
| 41 | #include <dlfcn.h> |
| 42 | |
| 43 | #include <assert.h> |
| 44 | |
| 45 | #include <f2fs_fs.h> |
| 46 | #include <f2fs_format_utils.h> |
| 47 | |
| 48 | #include <sparse/sparse.h> |
| 49 | |
| 50 | struct selabel_handle; |
| 51 | |
| 52 | #include "make_f2fs.h" |
| 53 | |
| 54 | #ifdef USE_MINGW |
| 55 | |
| 56 | #include <winsock2.h> |
| 57 | |
| 58 | /* These match the Linux definitions of these flags. |
| 59 | L_xx is defined to avoid conflicting with the win32 versions. |
| 60 | */ |
| 61 | #define L_S_IRUSR 00400 |
| 62 | #define L_S_IWUSR 00200 |
| 63 | #define L_S_IXUSR 00100 |
| 64 | #define S_IRWXU (L_S_IRUSR | L_S_IWUSR | L_S_IXUSR) |
| 65 | #define S_IRGRP 00040 |
| 66 | #define S_IWGRP 00020 |
| 67 | #define S_IXGRP 00010 |
| 68 | #define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP) |
| 69 | #define S_IROTH 00004 |
| 70 | #define S_IWOTH 00002 |
| 71 | #define S_IXOTH 00001 |
| 72 | #define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH) |
| 73 | #define S_ISUID 0004000 |
| 74 | #define S_ISGID 0002000 |
| 75 | #define S_ISVTX 0001000 |
| 76 | |
| 77 | #else |
| 78 | |
| 79 | #include <selinux/selinux.h> |
| 80 | #include <selinux/label.h> |
JP Abgrall | ebd6bcf | 2014-06-11 23:46:42 -0700 | [diff] [blame] | 81 | |
| 82 | #define O_BINARY 0 |
| 83 | |
| 84 | #endif |
| 85 | |
| 86 | struct f2fs_configuration config; |
| 87 | struct sparse_file *f2fs_sparse_file; |
| 88 | |
| 89 | struct buf_item { |
| 90 | void *buf; |
| 91 | size_t len; |
| 92 | struct buf_item *next; |
| 93 | }; |
| 94 | |
| 95 | struct buf_item *buf_list; |
| 96 | |
| 97 | static int dev_write_fd(void *buf, __u64 offset, size_t len) |
| 98 | { |
| 99 | if (lseek64(config.fd, (off64_t)offset, SEEK_SET) < 0) |
| 100 | return -1; |
| 101 | if (write(config.fd, buf, len) != len) |
| 102 | return -1; |
| 103 | return 0; |
| 104 | } |
| 105 | |
| 106 | void flush_sparse_buffs() |
| 107 | { |
| 108 | while (buf_list) { |
| 109 | struct buf_item *bi = buf_list; |
| 110 | buf_list = buf_list->next; |
| 111 | free(bi->buf); |
| 112 | free(bi); |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | static int dev_write_sparse(void *buf, __u64 byte_offset, size_t byte_len) |
| 117 | { |
| 118 | struct buf_item *bi = calloc(1, sizeof(struct buf_item)); |
| 119 | |
| 120 | if (bi == NULL) { |
| 121 | return -ENOMEM; |
| 122 | } |
| 123 | bi->buf = malloc(byte_len); |
| 124 | if (bi->buf == NULL) { |
| 125 | free(bi); |
| 126 | return -ENOMEM; |
| 127 | } |
| 128 | |
| 129 | bi->len = byte_len; |
| 130 | memcpy(bi->buf, buf, byte_len); |
| 131 | bi->next = buf_list; |
| 132 | buf_list = bi; |
| 133 | |
| 134 | sparse_file_add_data(f2fs_sparse_file, bi->buf, byte_len, byte_offset/F2FS_BLKSIZE); |
| 135 | return 0; |
| 136 | } |
| 137 | |
JP Abgrall | aa378b2 | 2014-06-13 16:10:51 -0700 | [diff] [blame] | 138 | void f2fs_finalize_device(struct f2fs_configuration *c) |
JP Abgrall | ebd6bcf | 2014-06-11 23:46:42 -0700 | [diff] [blame] | 139 | { |
| 140 | } |
| 141 | |
| 142 | int f2fs_trim_device() |
| 143 | { |
| 144 | return 0; |
| 145 | } |
| 146 | |
| 147 | /* |
| 148 | * IO interfaces |
| 149 | */ |
Mark Salyzyn | 9602ce2 | 2015-04-16 09:56:36 -0700 | [diff] [blame] | 150 | int dev_read_version(void *buf, __u64 offset, size_t len) |
| 151 | { |
| 152 | return 0; |
| 153 | } |
| 154 | |
JP Abgrall | ebd6bcf | 2014-06-11 23:46:42 -0700 | [diff] [blame] | 155 | int dev_read(void *buf, __u64 offset, size_t len) |
| 156 | { |
| 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | int dev_write(void *buf, __u64 offset, size_t len) |
| 161 | { |
| 162 | if (config.fd >= 0) { |
| 163 | return dev_write_fd(buf, offset, len); |
| 164 | } else { |
| 165 | return dev_write_sparse(buf, offset, len); |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | |
| 170 | int dev_fill(void *buf, __u64 offset, size_t len) |
| 171 | { |
| 172 | int ret; |
| 173 | if (config.fd >= 0) { |
| 174 | return dev_write_fd(buf, offset, len); |
| 175 | } |
| 176 | // sparse file fills with zero by default. |
| 177 | // return sparse_file_add_fill(f2fs_sparse_file, ((__u8*)(bi->buf))[0], byte_len, byte_offset/F2FS_BLKSIZE); |
| 178 | return 0; |
| 179 | } |
| 180 | |
| 181 | int dev_read_block(void *buf, __u64 blk_addr) |
| 182 | { |
| 183 | assert(false); // Must not be invoked. |
| 184 | return 0; |
| 185 | } |
| 186 | |
| 187 | int dev_read_blocks(void *buf, __u64 addr, __u32 nr_blks) |
| 188 | { |
| 189 | assert(false); // Must not be invoked. |
| 190 | return 0; |
| 191 | } |
| 192 | |