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| author | Gao Xiang <gaoxiang25@huawei.com> | 2019-04-19 17:22:37 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@aol.com> | 2019-08-03 11:18:30 +0800 |
| commit | 66653ef10a7fb4da0296f9c42b4f51035282966f (patch) | |
| tree | 386c07a9591dd8fd3cf5ed08875502bd0306a496 /include | |
| parent | d51c2d043773a91e397ad8115fd9fdc0f78994e0 (diff) | |
| download | erofs-utils-66653ef10a7fb4da0296f9c42b4f51035282966f.tar.gz | |
erofs-utils: introduce compression for regular files
Yay! Let's try to transparent file compression
for all regular files if necessary.
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/erofs/compress.h | 25 | ||||
| -rw-r--r-- | include/erofs/config.h | 2 | ||||
| -rw-r--r-- | include/erofs/internal.h | 1 |
3 files changed, 28 insertions, 0 deletions
diff --git a/include/erofs/compress.h b/include/erofs/compress.h new file mode 100644 index 0000000..e0abb8f --- /dev/null +++ b/include/erofs/compress.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * erofs_utils/include/erofs/compress.h + * + * Copyright (C) 2019 HUAWEI, Inc. + * http://www.huawei.com/ + * Created by Gao Xiang <gaoxiang25@huawei.com> + */ +#ifndef __EROFS_COMPRESS_H +#define __EROFS_COMPRESS_H + +#include "internal.h" + +/* workaround for an upstream lz4 compression issue, which can crash us */ +/* #define EROFS_CONFIG_COMPR_MAX_SZ (1024 * 1024) */ +#define EROFS_CONFIG_COMPR_MAX_SZ (900 * 1024) +#define EROFS_CONFIG_COMPR_MIN_SZ (32 * 1024) + +int erofs_write_compressed_file(struct erofs_inode *inode); + +int z_erofs_compress_init(void); +int z_erofs_compress_exit(void); + +#endif + diff --git a/include/erofs/config.h b/include/erofs/config.h index e31732b..177017b 100644 --- a/include/erofs/config.h +++ b/include/erofs/config.h @@ -19,6 +19,8 @@ struct erofs_configure { /* related arguments for mkfs.erofs */ char *c_img_path; char *c_src_path; + char *c_compr_alg_master; + int c_compr_level_master; }; extern struct erofs_configure cfg; diff --git a/include/erofs/internal.h b/include/erofs/internal.h index f4ca9ee..cf33e22 100644 --- a/include/erofs/internal.h +++ b/include/erofs/internal.h @@ -93,6 +93,7 @@ struct erofs_inode { struct erofs_buffer_head *bh_inline, *bh_data; void *idata; + void *compressmeta; }; #define IS_ROOT(x) ((x) == (x)->i_parent) |