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Merge tag 'fsnotify_for_v5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull fsnotify updates from Jan Kara:
 "This implements the fanotify FAN_DIR_MODIFY event.

  This event reports the name in a directory under which a change
  happened and together with the directory filehandle and fstatat()
  allows reliable and efficient implementation of directory
  synchronization"

* tag 'fsnotify_for_v5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  fanotify: Fix the checks in fanotify_fsid_equal
  fanotify: report name info for FAN_DIR_MODIFY event
  fanotify: record name info for FAN_DIR_MODIFY event
  fanotify: Drop fanotify_event_has_fid()
  fanotify: prepare to report both parent and child fid's
  fanotify: send FAN_DIR_MODIFY event flavor with dir inode and name
  fanotify: divorce fanotify_path_event and fanotify_fid_event
  fanotify: Store fanotify handles differently
  fanotify: Simplify create_fd()
  fanotify: fix merging marks masks with FAN_ONDIR
  fanotify: merge duplicate events on parent and child
  fsnotify: replace inode pointer with an object id
  fsnotify: simplify arguments passing to fsnotify_parent()
  fsnotify: use helpers to access data by data_type
  fsnotify: funnel all dirent events through fsnotify_name()
  fsnotify: factor helpers fsnotify_dentry() and fsnotify_file()
  fsnotify: tidy up FS_ and FAN_ constants
This commit is contained in:
Linus Torvalds 2020-04-06 08:58:42 -07:00
commit b6ff10700d
12 changed files with 642 additions and 368 deletions
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13
include/uapi/linux/fanotify.h
View file

@ -24,10 +24,11 @@
#define FAN_OPEN_PERM 0x00010000 /* File open in perm check */
#define FAN_ACCESS_PERM 0x00020000 /* File accessed in perm check */
#define FAN_OPEN_EXEC_PERM 0x00040000 /* File open/exec in perm check */
#define FAN_DIR_MODIFY 0x00080000 /* Directory entry was modified */
#define FAN_ONDIR 0x40000000 /* event occurred against dir */
#define FAN_EVENT_ON_CHILD 0x08000000 /* Interested in child events */
#define FAN_EVENT_ON_CHILD 0x08000000 /* interested in child events */
#define FAN_ONDIR 0x40000000 /* Event occurred against dir */
/* helper events */
#define FAN_CLOSE (FAN_CLOSE_WRITE | FAN_CLOSE_NOWRITE) /* close */
@ -116,6 +117,7 @@ struct fanotify_event_metadata {
};
#define FAN_EVENT_INFO_TYPE_FID 1
#define FAN_EVENT_INFO_TYPE_DFID_NAME 2
/* Variable length info record following event metadata */
struct fanotify_event_info_header {
@ -124,7 +126,12 @@ struct fanotify_event_info_header {
__u16 len;
};
/* Unique file identifier info record */
/*
* Unique file identifier info record. This is used both for
* FAN_EVENT_INFO_TYPE_FID records and for FAN_EVENT_INFO_TYPE_DFID_NAME
* records. For FAN_EVENT_INFO_TYPE_DFID_NAME there is additionally a null
* terminated name immediately after the file handle.
*/
struct fanotify_event_info_fid {
struct fanotify_event_info_header hdr;
__kernel_fsid_t fsid;