fs/squashfs: Add init and clean-up functions to decompression
Add sqfs_decompressor_init() and sqfs_decompressor_cleanup(). These
functions are called respectively in sqfs_probe() and sqfs_close(). For
now, only ZSTD requires an initialization logic. ZSTD support will be
added in a follow-up commit.
Move squashfs_ctxt definition to sqfs_filesystem.h. This structure is
passed to sqfs_decompressor_init() and sqfs_decompressor_cleanup(), so
it can no longer be local to sqfs.c.
Signed-off-by: Joao Marcos Costa <joaomarcos.costa@bootlin.com>
diff --git a/fs/squashfs/sqfs_filesystem.h b/fs/squashfs/sqfs_filesystem.h
index d63e3a4..ff2b0b1 100644
--- a/fs/squashfs/sqfs_filesystem.h
+++ b/fs/squashfs/sqfs_filesystem.h
@@ -9,8 +9,9 @@
#define SQFS_FILESYSTEM_H
#include <asm/unaligned.h>
-#include <stdint.h>
#include <fs.h>
+#include <part.h>
+#include <stdint.h>
#define SQFS_UNCOMPRESSED_DATA 0x0002
#define SQFS_MAGIC_NUMBER 0x73717368
@@ -72,6 +73,12 @@
__le64 export_table_start;
};
+struct squashfs_ctxt {
+ struct disk_partition cur_part_info;
+ struct blk_desc *cur_dev;
+ struct squashfs_super_block *sblk;
+};
+
struct squashfs_directory_index {
u32 index;
u32 start;