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Merge tag 'fsnotify_for_v5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull fanotify updates from Jan Kara:
 "Support for new FAN_RENAME fanotify event and support for reporting
  child info in directory fanotify events (FAN_REPORT_TARGET_FID)"

* tag 'fsnotify_for_v5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  fanotify: wire up FAN_RENAME event
  fanotify: report old and/or new parent+name in FAN_RENAME event
  fanotify: record either old name new name or both for FAN_RENAME
  fanotify: record old and new parent and name in FAN_RENAME event
  fanotify: support secondary dir fh and name in fanotify_info
  fanotify: use helpers to parcel fanotify_info buffer
  fanotify: use macros to get the offset to fanotify_info buffer
  fsnotify: generate FS_RENAME event with rich information
  fanotify: introduce group flag FAN_REPORT_TARGET_FID
  fsnotify: separate mark iterator type from object type enum
  fsnotify: clarify object type argument
This commit is contained in:
Linus Torvalds 2022-01-12 13:19:35 -08:00
commit 3d3d673306
12 changed files with 482 additions and 143 deletions
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12
include/uapi/linux/fanotify.h
View file

@ -28,6 +28,8 @@
#define FAN_EVENT_ON_CHILD 0x08000000 /* Interested in child events */
#define FAN_RENAME 0x10000000 /* File was renamed */
#define FAN_ONDIR 0x40000000 /* Event occurred against dir */
/* helper events */
@ -57,9 +59,13 @@
#define FAN_REPORT_FID 0x00000200 /* Report unique file id */
#define FAN_REPORT_DIR_FID 0x00000400 /* Report unique directory id */
#define FAN_REPORT_NAME 0x00000800 /* Report events with name */
#define FAN_REPORT_TARGET_FID 0x00001000 /* Report dirent target id */
/* Convenience macro - FAN_REPORT_NAME requires FAN_REPORT_DIR_FID */
#define FAN_REPORT_DFID_NAME (FAN_REPORT_DIR_FID | FAN_REPORT_NAME)
/* Convenience macro - FAN_REPORT_TARGET_FID requires all other FID flags */
#define FAN_REPORT_DFID_NAME_TARGET (FAN_REPORT_DFID_NAME | \
FAN_REPORT_FID | FAN_REPORT_TARGET_FID)
/* Deprecated - do not use this in programs and do not add new flags here! */
#define FAN_ALL_INIT_FLAGS (FAN_CLOEXEC | FAN_NONBLOCK | \
@ -128,6 +134,12 @@ struct fanotify_event_metadata {
#define FAN_EVENT_INFO_TYPE_PIDFD 4
#define FAN_EVENT_INFO_TYPE_ERROR 5
/* Special info types for FAN_RENAME */
#define FAN_EVENT_INFO_TYPE_OLD_DFID_NAME 10
/* Reserved for FAN_EVENT_INFO_TYPE_OLD_DFID 11 */
#define FAN_EVENT_INFO_TYPE_NEW_DFID_NAME 12
/* Reserved for FAN_EVENT_INFO_TYPE_NEW_DFID 13 */
/* Variable length info record following event metadata */
struct fanotify_event_info_header {
__u8 info_type;