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| author | Amir Goldstein <amir73il@gmail.com> | 2018-06-23 17:54:50 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2018-06-27 13:45:07 +0200 |
| commit | 3ac70bfcde812b1b97d8a88a832df59941fa293f (patch) | |
| tree | 52dad7896f274af1f4e12fc87997994387e12333 /fs/notify | |
| parent | 36f10f55ff1d2867bfc48ed898a9cc0dc6b49dd2 (diff) | |
| download | linux-stable-3ac70bfcde812b1b97d8a88a832df59941fa293f.tar.gz linux-stable-3ac70bfcde812b1b97d8a88a832df59941fa293f.tar.bz2 linux-stable-3ac70bfcde812b1b97d8a88a832df59941fa293f.zip | |
fsnotify: add helper to get mask from connector
Use a helper to get the mask from the object (i.e. i_fsnotify_mask)
to generalize code of add/remove inode/vfsmount mark.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify')
| -rw-r--r-- | fs/notify/fanotify/fanotify_user.c | 16 | ||||
| -rw-r--r-- | fs/notify/mark.c | 25 |
2 files changed, 29 insertions, 12 deletions
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index 81212b251189..3899ad177651 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -542,8 +542,8 @@ static int fanotify_remove_vfsmount_mark(struct fsnotify_group *group, removed = fanotify_mark_remove_from_mask(fsn_mark, mask, flags, &destroy_mark); - if (removed & real_mount(mnt)->mnt_fsnotify_mask) - fsnotify_recalc_mask(real_mount(mnt)->mnt_fsnotify_marks); + if (removed & fsnotify_conn_mask(fsn_mark->connector)) + fsnotify_recalc_mask(fsn_mark->connector); if (destroy_mark) fsnotify_detach_mark(fsn_mark); mutex_unlock(&group->mark_mutex); @@ -571,8 +571,8 @@ static int fanotify_remove_inode_mark(struct fsnotify_group *group, removed = fanotify_mark_remove_from_mask(fsn_mark, mask, flags, &destroy_mark); - if (removed & inode->i_fsnotify_mask) - fsnotify_recalc_mask(inode->i_fsnotify_marks); + if (removed & fsnotify_conn_mask(fsn_mark->connector)) + fsnotify_recalc_mask(fsn_mark->connector); if (destroy_mark) fsnotify_detach_mark(fsn_mark); mutex_unlock(&group->mark_mutex); @@ -658,8 +658,8 @@ static int fanotify_add_vfsmount_mark(struct fsnotify_group *group, } } added = fanotify_mark_add_to_mask(fsn_mark, mask, flags); - if (added & ~real_mount(mnt)->mnt_fsnotify_mask) - fsnotify_recalc_mask(real_mount(mnt)->mnt_fsnotify_marks); + if (added & ~fsnotify_conn_mask(fsn_mark->connector)) + fsnotify_recalc_mask(fsn_mark->connector); mutex_unlock(&group->mark_mutex); fsnotify_put_mark(fsn_mark); @@ -697,8 +697,8 @@ static int fanotify_add_inode_mark(struct fsnotify_group *group, } } added = fanotify_mark_add_to_mask(fsn_mark, mask, flags); - if (added & ~inode->i_fsnotify_mask) - fsnotify_recalc_mask(inode->i_fsnotify_marks); + if (added & ~fsnotify_conn_mask(fsn_mark->connector)) + fsnotify_recalc_mask(fsn_mark->connector); mutex_unlock(&group->mark_mutex); fsnotify_put_mark(fsn_mark); diff --git a/fs/notify/mark.c b/fs/notify/mark.c index 959bc73aaae7..05506d60131c 100644 --- a/fs/notify/mark.c +++ b/fs/notify/mark.c @@ -109,6 +109,23 @@ void fsnotify_get_mark(struct fsnotify_mark *mark) refcount_inc(&mark->refcnt); } +static __u32 *fsnotify_conn_mask_p(struct fsnotify_mark_connector *conn) +{ + if (conn->type == FSNOTIFY_OBJ_TYPE_INODE) + return &fsnotify_conn_inode(conn)->i_fsnotify_mask; + else if (conn->type == FSNOTIFY_OBJ_TYPE_VFSMOUNT) + return &fsnotify_conn_mount(conn)->mnt_fsnotify_mask; + return NULL; +} + +__u32 fsnotify_conn_mask(struct fsnotify_mark_connector *conn) +{ + if (WARN_ON(!fsnotify_valid_obj_type(conn->type))) + return 0; + + return *fsnotify_conn_mask_p(conn); +} + static void __fsnotify_recalc_mask(struct fsnotify_mark_connector *conn) { u32 new_mask = 0; @@ -119,10 +136,10 @@ static void __fsnotify_recalc_mask(struct fsnotify_mark_connector *conn) if (mark->flags & FSNOTIFY_MARK_FLAG_ATTACHED) new_mask |= mark->mask; } - if (conn->type == FSNOTIFY_OBJ_TYPE_INODE) - fsnotify_conn_inode(conn)->i_fsnotify_mask = new_mask; - else if (conn->type == FSNOTIFY_OBJ_TYPE_VFSMOUNT) - fsnotify_conn_mount(conn)->mnt_fsnotify_mask = new_mask; + if (WARN_ON(!fsnotify_valid_obj_type(conn->type))) + return; + + *fsnotify_conn_mask_p(conn) = new_mask; } /* |