1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef __FS_NOTIFY_FSNOTIFY_H_ 3*4882a593Smuzhiyun #define __FS_NOTIFY_FSNOTIFY_H_ 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <linux/list.h> 6*4882a593Smuzhiyun #include <linux/fsnotify.h> 7*4882a593Smuzhiyun #include <linux/srcu.h> 8*4882a593Smuzhiyun #include <linux/types.h> 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #include "../mount.h" 11*4882a593Smuzhiyun fsnotify_conn_inode(struct fsnotify_mark_connector * conn)12*4882a593Smuzhiyunstatic inline struct inode *fsnotify_conn_inode( 13*4882a593Smuzhiyun struct fsnotify_mark_connector *conn) 14*4882a593Smuzhiyun { 15*4882a593Smuzhiyun return container_of(conn->obj, struct inode, i_fsnotify_marks); 16*4882a593Smuzhiyun } 17*4882a593Smuzhiyun fsnotify_conn_mount(struct fsnotify_mark_connector * conn)18*4882a593Smuzhiyunstatic inline struct mount *fsnotify_conn_mount( 19*4882a593Smuzhiyun struct fsnotify_mark_connector *conn) 20*4882a593Smuzhiyun { 21*4882a593Smuzhiyun return container_of(conn->obj, struct mount, mnt_fsnotify_marks); 22*4882a593Smuzhiyun } 23*4882a593Smuzhiyun fsnotify_conn_sb(struct fsnotify_mark_connector * conn)24*4882a593Smuzhiyunstatic inline struct super_block *fsnotify_conn_sb( 25*4882a593Smuzhiyun struct fsnotify_mark_connector *conn) 26*4882a593Smuzhiyun { 27*4882a593Smuzhiyun return container_of(conn->obj, struct super_block, s_fsnotify_marks); 28*4882a593Smuzhiyun } 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun /* destroy all events sitting in this groups notification queue */ 31*4882a593Smuzhiyun extern void fsnotify_flush_notify(struct fsnotify_group *group); 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun /* protects reads of inode and vfsmount marks list */ 34*4882a593Smuzhiyun extern struct srcu_struct fsnotify_mark_srcu; 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun /* compare two groups for sorting of marks lists */ 37*4882a593Smuzhiyun extern int fsnotify_compare_groups(struct fsnotify_group *a, 38*4882a593Smuzhiyun struct fsnotify_group *b); 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun /* Destroy all marks attached to an object via connector */ 41*4882a593Smuzhiyun extern void fsnotify_destroy_marks(fsnotify_connp_t *connp); 42*4882a593Smuzhiyun /* run the list of all marks associated with inode and destroy them */ fsnotify_clear_marks_by_inode(struct inode * inode)43*4882a593Smuzhiyunstatic inline void fsnotify_clear_marks_by_inode(struct inode *inode) 44*4882a593Smuzhiyun { 45*4882a593Smuzhiyun fsnotify_destroy_marks(&inode->i_fsnotify_marks); 46*4882a593Smuzhiyun } 47*4882a593Smuzhiyun /* run the list of all marks associated with vfsmount and destroy them */ fsnotify_clear_marks_by_mount(struct vfsmount * mnt)48*4882a593Smuzhiyunstatic inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt) 49*4882a593Smuzhiyun { 50*4882a593Smuzhiyun fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks); 51*4882a593Smuzhiyun } 52*4882a593Smuzhiyun /* run the list of all marks associated with sb and destroy them */ fsnotify_clear_marks_by_sb(struct super_block * sb)53*4882a593Smuzhiyunstatic inline void fsnotify_clear_marks_by_sb(struct super_block *sb) 54*4882a593Smuzhiyun { 55*4882a593Smuzhiyun fsnotify_destroy_marks(&sb->s_fsnotify_marks); 56*4882a593Smuzhiyun } 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun /* 59*4882a593Smuzhiyun * update the dentry->d_flags of all of inode's children to indicate if inode cares 60*4882a593Smuzhiyun * about events that happen to its children. 61*4882a593Smuzhiyun */ 62*4882a593Smuzhiyun extern void __fsnotify_update_child_dentry_flags(struct inode *inode); 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun /* allocate and destroy and event holder to attach events to notification/access queues */ 65*4882a593Smuzhiyun extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void); 66*4882a593Smuzhiyun extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder); 67*4882a593Smuzhiyun 68*4882a593Smuzhiyun extern struct kmem_cache *fsnotify_mark_connector_cachep; 69*4882a593Smuzhiyun 70*4882a593Smuzhiyun #endif /* __FS_NOTIFY_FSNOTIFY_H_ */ 71