diff options
| author | Jeff Layton <jlayton@kernel.org> | 2026-04-28 08:09:51 +0100 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2026-05-15 19:24:33 +0200 |
| commit | 010043003c0c81c0cedde267076cbe1e0911db49 (patch) | |
| tree | 8fcf938f7319e27b31b8f6707e518350df4c305e /include/linux/fsnotify.h | |
| parent | 12ffbb117b64d9f4b1b02521010a5f2953a1972a (diff) | |
fsnotify: add FSNOTIFY_EVENT_RENAME data type
Add a new fsnotify_rename_data struct and FSNOTIFY_EVENT_RENAME data
type that carries both the moved dentry and the inode that was
overwritten by the rename (if any).
Update fsnotify_data_inode(), fsnotify_data_dentry(), and
fsnotify_data_sb() to handle the new type, and add a new
fsnotify_data_rename_target() helper for extracting the overwritten
target inode.
Update fsnotify_move() to use the new data type for FS_RENAME and
FS_MOVED_TO events, passing the overwritten target inode through the
event data. FS_MOVED_FROM is unchanged since the source directory
doesn't need overwrite information.
This is done so that fsnotify consumers like nfsd can atomically
observe the overwritten file when a rename replaces an existing entry,
without needing a separate FS_DELETE event.
Assisted-by: Claude (Anthropic Claude Code)
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://patch.msgid.link/20260428-dir-deleg-v3-7-5a0780ba9def@kernel.org
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include/linux/fsnotify.h')
| -rw-r--r-- | include/linux/fsnotify.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h index 079c18bcdbde..bda798bc67bc 100644 --- a/include/linux/fsnotify.h +++ b/include/linux/fsnotify.h @@ -257,6 +257,10 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir, __u32 new_dir_mask = FS_MOVED_TO; __u32 rename_mask = FS_RENAME; const struct qstr *new_name = &moved->d_name; + struct fsnotify_rename_data rd = { + .moved = moved, + .target = target, + }; if (isdir) { old_dir_mask |= FS_ISDIR; @@ -265,12 +269,12 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir, } /* Event with information about both old and new parent+name */ - fsnotify_name(rename_mask, moved, FSNOTIFY_EVENT_DENTRY, + fsnotify_name(rename_mask, &rd, FSNOTIFY_EVENT_RENAME, old_dir, old_name, 0); fsnotify_name(old_dir_mask, source, FSNOTIFY_EVENT_INODE, old_dir, old_name, fs_cookie); - fsnotify_name(new_dir_mask, source, FSNOTIFY_EVENT_INODE, + fsnotify_name(new_dir_mask, &rd, FSNOTIFY_EVENT_RENAME, new_dir, new_name, fs_cookie); if (target) |