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29 #define _LARGEFILE64_SOURCE
36 #include <asm/types.h>
41 #include <string.h> /* memset() */
42 #include <sys/param.h>
44 #include <sys/types.h>
48 #include <f2fs_format_utils.h>
50 #include <sparse/sparse.h>
52 struct selabel_handle;
54 #include "make_f2fs.h"
60 /* These match the Linux definitions of these flags.
61 L_xx is defined to avoid conflicting with the win32 versions.
63 #define L_S_IRUSR 00400
64 #define L_S_IWUSR 00200
65 #define L_S_IXUSR 00100
66 #define S_IRWXU (L_S_IRUSR | L_S_IWUSR | L_S_IXUSR)
70 #define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP)
74 #define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH)
75 #define S_ISUID 0004000
76 #define S_ISGID 0002000
77 #define S_ISVTX 0001000
81 #include <selinux/selinux.h>
82 #include <selinux/label.h>
88 struct f2fs_configuration config;
89 struct sparse_file *f2fs_sparse_file;
94 struct buf_item *next;
97 struct buf_item *buf_list;
99 static int dev_write_fd(void *buf, __u64 offset, size_t len)
101 if (lseek64(config.fd, (off64_t)offset, SEEK_SET) < 0)
103 ssize_t written = write(config.fd, buf, len);
106 if ((size_t)written != len)
111 void flush_sparse_buffs()
114 struct buf_item *bi = buf_list;
115 buf_list = buf_list->next;
121 static int dev_write_sparse(void *buf, __u64 byte_offset, size_t byte_len)
123 struct buf_item *bi = calloc(1, sizeof(struct buf_item));
128 bi->buf = malloc(byte_len);
129 if (bi->buf == NULL) {
135 memcpy(bi->buf, buf, byte_len);
139 sparse_file_add_data(f2fs_sparse_file, bi->buf, byte_len, byte_offset/F2FS_BLKSIZE);
143 void init_sparse_file(unsigned int block_size, int64_t len)
145 f2fs_sparse_file = sparse_file_new(block_size, len);
148 void finalize_sparse_file(int fd)
150 sparse_file_write(f2fs_sparse_file, fd, /*gzip*/0, /*sparse*/1, /*crc*/0);
151 sparse_file_destroy(f2fs_sparse_file);
154 void f2fs_finalize_device(struct f2fs_configuration *c)
158 int f2fs_trim_device()
166 int dev_read_version(void *buf, __u64 offset, size_t len)
171 int dev_read(void *buf, __u64 offset, size_t len)
176 int dev_write(void *buf, __u64 offset, size_t len)
178 if (config.fd >= 0) {
179 return dev_write_fd(buf, offset, len);
181 return dev_write_sparse(buf, offset, len);
186 int dev_fill(void *buf, __u64 offset, size_t len)
189 if (config.fd >= 0) {
190 return dev_write_fd(buf, offset, len);
192 // sparse file fills with zero by default.
193 // return sparse_file_add_fill(f2fs_sparse_file, ((__u8*)(bi->buf))[0], byte_len, byte_offset/F2FS_BLKSIZE);
197 int dev_read_block(void *buf, __u64 blk_addr)
199 assert(false); // Must not be invoked.
203 int dev_read_blocks(void *buf, __u64 addr, __u32 nr_blks)
205 assert(false); // Must not be invoked.