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Message-Id: <1343735309-30579-33-git-send-email-wenqing.lz@taobao.com>
Date: Tue, 31 Jul 2012 19:48:25 +0800
From: Zheng Liu <gnehzuil.liu@...il.com>
To: linux-ext4@...r.kernel.org
Cc: Zheng Liu <wenqing.lz@...bao.com>
Subject: [PATCH 32/36 v4] libext2fs: add read/write inline data functions
From: Zheng Liu <wenqing.lz@...bao.com>
Add read/write inline data functions for pass2.
Signed-off-by: Zheng Liu <wenqing.lz@...bao.com>
---
lib/ext2fs/dirblock.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++
lib/ext2fs/ext2fs.h | 7 +++++
2 files changed, 69 insertions(+), 0 deletions(-)
diff --git a/lib/ext2fs/dirblock.c b/lib/ext2fs/dirblock.c
index 54b2777..77e8f39 100644
--- a/lib/ext2fs/dirblock.c
+++ b/lib/ext2fs/dirblock.c
@@ -62,6 +62,45 @@ errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
return ext2fs_read_dir_block3(fs, block, buf, 0);
}
+errcode_t ext2fs_read_dir_inline_data(ext2_filsys fs, ext2_ino_t ino, void *buf)
+{
+ struct ext2_inode_large *inode;
+ struct inline_data idata;
+
+ ext2fs_get_mem(EXT2_INODE_SIZE(fs->super), &inode);
+ ext2fs_read_inode_full(fs, ino, (void *)inode, EXT2_INODE_SIZE(fs->super));
+
+ if (!(inode->i_flags & EXT4_INLINE_DATA_FL))
+ return -1;
+
+ memcpy(buf, inode->i_block, EXT4_MIN_INLINE_DATA_SIZE);
+
+ ext2fs_free_mem(&inode);
+ return 0;
+}
+
+errcode_t ext2fs_read_dir_inline_data_more(ext2_filsys fs, ext2_ino_t ino, void *buf)
+{
+ struct ext2_inode_large *inode;
+ struct inline_data idata;
+
+ ext2fs_get_mem(EXT2_INODE_SIZE(fs->super), &inode);
+ ext2fs_read_inode_full(fs, ino, (void *)inode, EXT2_INODE_SIZE(fs->super));
+
+ if (!(inode->i_flags & EXT4_INLINE_DATA_FL))
+ return -1;
+
+ ext2fs_iget_extra_inode(fs, inode, &idata);
+ if (idata.inline_size == EXT4_MIN_INLINE_DATA_SIZE)
+ return 0;
+
+ memcpy(buf + EXT4_MIN_INLINE_DATA_SIZE,
+ ext2fs_get_inline_xattr_pos(inode, &idata),
+ idata.inline_size - EXT4_MIN_INLINE_DATA_SIZE);
+
+ ext2fs_free_mem(&inode);
+ return 0;
+}
errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
void *inbuf, int flags EXT2FS_ATTR((unused)),
@@ -111,3 +150,26 @@ errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
return ext2fs_write_dir_block3(fs, block, inbuf, 0);
}
+errcode_t ext2fs_write_dir_inline_data(ext2_filsys fs, ext2_ino_t ino, void *buf)
+{
+ struct ext2_inode_large *inode;
+ struct inline_data idata;
+
+ ext2fs_get_mem(EXT2_INODE_SIZE(fs->super), &inode);
+ ext2fs_read_inode_full(fs, ino, (void *)inode, EXT2_INODE_SIZE(fs->super));
+
+ memcpy(inode->i_block, buf, EXT4_MIN_INLINE_DATA_SIZE);
+
+ ext2fs_iget_extra_inode(fs, inode, &idata);
+ if (idata.inline_size == EXT4_MIN_INLINE_DATA_SIZE)
+ goto out;
+
+ memcpy(ext2fs_get_inline_xattr_pos(inode, &idata),
+ buf + EXT4_MIN_INLINE_DATA_SIZE,
+ idata.inline_size - EXT4_MIN_INLINE_DATA_SIZE);
+
+out:
+ ext2fs_write_inode_full(fs, ino, (void *)inode, EXT2_INODE_SIZE(fs->super));
+ ext2fs_free_mem(&inode);
+ return 0;
+}
diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index bacc14d..0bd5023 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -1060,6 +1060,11 @@ extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
void *buf, int flags);
extern errcode_t ext2fs_read_dir_block4(ext2_filsys fs, blk64_t block,
void *buf, int flags, ext2_ino_t ino);
+extern errcode_t ext2fs_read_dir_inline_data(ext2_filsys fs, ext2_ino_t ino,
+ void *buf);
+extern errcode_t ext2fs_read_dir_inline_data_more(ext2_filsys fs,
+ ext2_ino_t ino,
+ void *buf);
extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
void *buf);
extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
@@ -1068,6 +1073,8 @@ extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
void *buf, int flags);
extern errcode_t ext2fs_write_dir_block4(ext2_filsys fs, blk64_t block,
void *buf, int flags, ext2_ino_t ino);
+extern errcode_t ext2fs_write_dir_inline_data(ext2_filsys fs, ext2_ino_t ino,
+ void *buf);
/* dirhash.c */
extern errcode_t ext2fs_dirhash(int version, const char *name, int len,
--
1.7.4.1
--
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