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authorKonstantin Komarov <almaz.alexandrovich@paragon-software.com>2021-10-05 19:08:08 +0300
committerKonstantin Komarov <almaz.alexandrovich@paragon-software.com>2021-10-11 19:28:06 +0300
commitcd4c76ff807c1afeed89f1b7e311760c0e296349 (patch)
treeb31ebb58def6ac01546536dff40d60d90f0261c8 /fs/ntfs3
parent14a981193e409d8ca3f89768cfbd7a9a516d9927 (diff)
fs/ntfs3: Refactor ni_parse_reparse
Change argument from void* to struct REPARSE_DATA_BUFFER* We copy data to buffer, so we can read it later in ntfs_read_mft. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Diffstat (limited to 'fs/ntfs3')
-rw-r--r--fs/ntfs3/frecord.c9
-rw-r--r--fs/ntfs3/ntfs_fs.h2
2 files changed, 6 insertions, 5 deletions
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index 007602badd90..ecb965e4afd0 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -1710,18 +1710,16 @@ out:
/*
* ni_parse_reparse
*
- * Buffer is at least 24 bytes.
+ * buffer - memory for reparse buffer header
*/
enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr,
- void *buffer)
+ struct REPARSE_DATA_BUFFER *buffer)
{
const struct REPARSE_DATA_BUFFER *rp = NULL;
u8 bits;
u16 len;
typeof(rp->CompressReparseBuffer) *cmpr;
- static_assert(sizeof(struct REPARSE_DATA_BUFFER) <= 24);
-
/* Try to estimate reparse point. */
if (!attr->non_res) {
rp = resident_data_ex(attr, sizeof(struct REPARSE_DATA_BUFFER));
@@ -1807,6 +1805,9 @@ enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr,
return REPARSE_NONE;
}
+ if (buffer != rp)
+ memcpy(buffer, rp, sizeof(struct REPARSE_DATA_BUFFER));
+
/* Looks like normal symlink. */
return REPARSE_LINK;
}
diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h
index 9277b552f257..e95d93c683ed 100644
--- a/fs/ntfs3/ntfs_fs.h
+++ b/fs/ntfs3/ntfs_fs.h
@@ -547,7 +547,7 @@ struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type,
struct ATTR_LIST_ENTRY **entry);
int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa);
enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr,
- void *buffer);
+ struct REPARSE_DATA_BUFFER *buffer);
int ni_write_inode(struct inode *inode, int sync, const char *hint);
#define _ni_write_inode(i, w) ni_write_inode(i, w, __func__)
int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo,