73   virtual int AddToSparseFile(struct sparse_file* s, int64_t len, unsigned int block) = 0;
76   virtual int ReadValue(void* ptr, int len) = 0;
79   virtual int GetCrc32(uint32_t* crc32, int64_t len) = 0;
102   int AddToSparseFile(struct sparse_file* s, int64_t len, unsigned int block) override {  in AddToSparseFile()  argument
103     return sparse_file_add_fd(s, fd, GetOffset(), len, block);  in AddToSparseFile()
106   int ReadValue(void* ptr, int len) override { return read_all(fd, ptr, len); }  in ReadValue()  argument
108   int GetCrc32(uint32_t* crc32, int64_t len) override {  in GetCrc32()  argument
111     while (len) {  in GetCrc32()
112       chunk = std::min(len, COPY_BUF_SIZE);  in GetCrc32()
118       len -= chunk;  in GetCrc32()
131   int AccessOkay(int64_t len) {  in AccessOkay()  argument
132     if (len <= 0) return -EINVAL;  in AccessOkay()
135     if (len > buf_end - buf) return -EOVERFLOW;  in AccessOkay()
141   SparseFileBufSource(char* buf, uint64_t len) {  in SparseFileBufSource()  argument
145     this->buf_end = buf + len;  in SparseFileBufSource()
167   int AddToSparseFile(struct sparse_file* s, int64_t len, unsigned int block) override {  in AddToSparseFile()  argument
168     int ret = AccessOkay(len);  in AddToSparseFile()
172     return sparse_file_add_data(s, buf, len, block);  in AddToSparseFile()
175   int ReadValue(void* ptr, int len) override {  in ReadValue()  argument
176     int ret = AccessOkay(len);  in ReadValue()
180     memcpy(ptr, buf, len);  in ReadValue()
181     buf += len;  in ReadValue()
182     offset += len;  in ReadValue()
186   int GetCrc32(uint32_t* crc32, int64_t len) override {  in GetCrc32()  argument
187     int ret = AccessOkay(len);  in GetCrc32()
191     *crc32 = sparse_crc32(*crc32, buf, len);  in GetCrc32()
192     buf += len;  in GetCrc32()
193     offset += len;  in GetCrc32()
216   int64_t len = (int64_t)blocks * s->block_size;  in process_raw_chunk()  local
226   ret = source->AddToSparseFile(s, len, block);  in process_raw_chunk()
232     ret = source->GetCrc32(crc32, len);  in process_raw_chunk()
237     ret = source->Seek(len);  in process_raw_chunk()
251   int64_t len = (int64_t)blocks * s->block_size;  in process_fill_chunk()  local
265   ret = sparse_file_add_fill(s, fill_val, len, block);  in process_fill_chunk()
277     while (len) {  in process_fill_chunk()
278       chunk = std::min(len, COPY_BUF_SIZE);  in process_fill_chunk()
280       len -= chunk;  in process_fill_chunk()
295     int64_t len = (int64_t)blocks * s->block_size;  in process_skip_chunk()  local
298     while (len) {  in process_skip_chunk()
299       int chunk = std::min(len, COPY_BUF_SIZE);  in process_skip_chunk()
301       len -= chunk;  in process_skip_chunk()
514   ret = do_sparse_file_read_normal(s, fd, buf, 0, s->len);  in sparse_file_read_normal()
540     } else if (start > s->len) {  in sparse_file_read_hole()
550     end = std::min(end, s->len);  in sparse_file_read_hole()
564   } while (end < s->len);  in sparse_file_read_hole()
598   int64_t len;  in sparse_file_import_source()  local
633   len = (int64_t)sparse_header.total_blks * sparse_header.blk_sz;  in sparse_file_import_source()
634   s = sparse_file_new(sparse_header.blk_sz, len);  in sparse_file_import_source()
663 struct sparse_file* sparse_file_import_buf(char* buf, size_t len, bool verbose, bool crc) {  in sparse_file_import_buf()  argument
664   SparseFileBufSource source(buf, len);  in sparse_file_import_buf()
670   int64_t len;  in sparse_file_import_auto()  local
678   len = lseek64(fd, 0, SEEK_END);  in sparse_file_import_auto()
679   if (len < 0) {  in sparse_file_import_auto()
685   s = sparse_file_new(4096, len);  in sparse_file_import_auto()