Import libsparse sources

[project/make_ext4fs.git] / libsparse / backed_block.h

diff --git a/libsparse/backed_block.h b/libsparse/backed_block.h
new file mode 100644 (file)
index 0000000..1a159be
--- /dev/null
+++ b/libsparse/backed_block.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _BACKED_BLOCK_H_
+#define _BACKED_BLOCK_H_
+
+#include <stdint.h>
+
+struct backed_block_list;
+struct backed_block;
+
+enum backed_block_type {
+       BACKED_BLOCK_DATA,
+       BACKED_BLOCK_FILE,
+       BACKED_BLOCK_FD,
+       BACKED_BLOCK_FILL,
+};
+
+int backed_block_add_data(struct backed_block_list *bbl, void *data,
+               unsigned int len, unsigned int block);
+int backed_block_add_fill(struct backed_block_list *bbl, unsigned int fill_val,
+               unsigned int len, unsigned int block);
+int backed_block_add_file(struct backed_block_list *bbl, const char *filename,
+               int64_t offset, unsigned int len, unsigned int block);
+int backed_block_add_fd(struct backed_block_list *bbl, int fd,
+               int64_t offset, unsigned int len, unsigned int block);
+
+struct backed_block *backed_block_iter_new(struct backed_block_list *bbl);
+struct backed_block *backed_block_iter_next(struct backed_block *bb);
+unsigned int backed_block_len(struct backed_block *bb);
+unsigned int backed_block_block(struct backed_block *bb);
+void *backed_block_data(struct backed_block *bb);
+const char *backed_block_filename(struct backed_block *bb);
+int backed_block_fd(struct backed_block *bb);
+int64_t backed_block_file_offset(struct backed_block *bb);
+uint32_t backed_block_fill_val(struct backed_block *bb);
+enum backed_block_type backed_block_type(struct backed_block *bb);
+int backed_block_split(struct backed_block_list *bbl, struct backed_block *bb,
+               unsigned int max_len);
+
+struct backed_block *backed_block_iter_new(struct backed_block_list *bbl);
+struct backed_block *backed_block_iter_next(struct backed_block *bb);
+
+struct backed_block_list *backed_block_list_new(unsigned int block_size);
+void backed_block_list_destroy(struct backed_block_list *bbl);
+
+void backed_block_list_move(struct backed_block_list *from,
+               struct backed_block_list *to, struct backed_block *start,
+               struct backed_block *end);
+
+#endif