From: Zheng Liu <wenqing.lz@xxxxxxxxxx>
we need to search extend attributes to get entry of inline data.
Thus, add this function to do this work.
Signed-off-by: Zheng Liu <wenqing.lz@xxxxxxxxxx>
---
lib/ext2fs/ext2fs.h | 3 +++
lib/ext2fs/ext_attr.c | 26 ++++++++++++++++++++++++++
2 files changed, 29 insertions(+), 0 deletions(-)
diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index 89815eb..a6518be 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -1075,6 +1075,9 @@ extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
char *block_buf,
int adjust, __u32 *newcount);
+extern errcode_t ext2fs_find_entry_ext_attr(struct ext2_ext_attr_entry **pentry,
+ int name_index, const char *name,
+ size_t size, int sorted);
/* extent.c */
extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);
diff --git a/lib/ext2fs/ext_attr.c b/lib/ext2fs/ext_attr.c
index 1889824..f027296 100644
--- a/lib/ext2fs/ext_attr.c
+++ b/lib/ext2fs/ext_attr.c
@@ -155,3 +155,29 @@ errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
{
return ext2fs_adjust_ea_refcount(fs, blk, block_buf, adjust, newcount);
}
+
+errcode_t ext2fs_find_entry_ext_attr(struct ext2_ext_attr_entry **pentry,
+ int name_index, const char *name,
+ size_t size, int sorted)
+{
+ struct ext2_ext_attr_entry *entry;
+ size_t name_len;
+ int cmp;
+
+ if (name == NULL)
+ return -1;
+ name_len = strlen(name);
+ entry = *pentry;
+ for (; !EXT2_EXT_IS_LAST_ENTRY(entry); entry = EXT2_EXT_ATTR_NEXT(entry)) {
+ cmp = name_index - entry->e_name_index;
+ if (!cmp)
+ cmp = name_len - entry->e_name_len;
+ if (!cmp)
+ cmp = memcmp(name, EXT2_EXT_ATTR_NAME(entry), name_len);
+ if (!cmp)
+ break;
+ }
+ *pentry = entry;
+
+ return cmp;
+}
--
1.7.4.1
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