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| author | Amir Goldstein <amir73il@gmail.com> | 2022-04-22 15:03:12 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2022-04-25 14:37:03 +0200 |
| commit | a32e697cda27679a0327ae2cafdad8c7170f548f (patch) | |
| tree | 4118df5e9ffa55e6e7b0dcdc009e2ac14957ae86 /fs/notify/inotify | |
| parent | af2d861d4cd2a4da5137f795ee3509e6f944a25b (diff) | |
| download | linux-a32e697cda27679a0327ae2cafdad8c7170f548f.tar.gz linux-a32e697cda27679a0327ae2cafdad8c7170f548f.tar.bz2 linux-a32e697cda27679a0327ae2cafdad8c7170f548f.zip | |
inotify: show inotify mask flags in proc fdinfo
The inotify mask flags IN_ONESHOT and IN_EXCL_UNLINK are not "internal
to kernel" and should be exposed in procfs fdinfo so CRIU can restore
them.
Fixes: 6933599697c9 ("inotify: hide internal kernel bits from fdinfo")
Link: https://lore.kernel.org/r/20220422120327.3459282-2-amir73il@gmail.com
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify/inotify')
| -rw-r--r-- | fs/notify/inotify/inotify.h | 12 | ||||
| -rw-r--r-- | fs/notify/inotify/inotify_user.c | 2 |
2 files changed, 13 insertions, 1 deletions
diff --git a/fs/notify/inotify/inotify.h b/fs/notify/inotify/inotify.h index 2007e3711916..8f00151eb731 100644 --- a/fs/notify/inotify/inotify.h +++ b/fs/notify/inotify/inotify.h @@ -22,6 +22,18 @@ static inline struct inotify_event_info *INOTIFY_E(struct fsnotify_event *fse) return container_of(fse, struct inotify_event_info, fse); } +/* + * INOTIFY_USER_FLAGS represents all of the mask bits that we expose to + * userspace. There is at least one bit (FS_EVENT_ON_CHILD) which is + * used only internally to the kernel. + */ +#define INOTIFY_USER_MASK (IN_ALL_EVENTS | IN_ONESHOT | IN_EXCL_UNLINK) + +static inline __u32 inotify_mark_user_mask(struct fsnotify_mark *fsn_mark) +{ + return fsn_mark->mask & INOTIFY_USER_MASK; +} + extern void inotify_ignored_and_remove_idr(struct fsnotify_mark *fsn_mark, struct fsnotify_group *group); extern int inotify_handle_inode_event(struct fsnotify_mark *inode_mark, diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c index 54583f62dc44..3ef57db0ec9d 100644 --- a/fs/notify/inotify/inotify_user.c +++ b/fs/notify/inotify/inotify_user.c @@ -110,7 +110,7 @@ static inline __u32 inotify_arg_to_mask(struct inode *inode, u32 arg) mask |= FS_EVENT_ON_CHILD; /* mask off the flags used to open the fd */ - mask |= (arg & (IN_ALL_EVENTS | IN_ONESHOT | IN_EXCL_UNLINK)); + mask |= (arg & INOTIFY_USER_MASK); return mask; } |