1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 290586523SEric Paris #ifndef __FS_NOTIFY_FSNOTIFY_H_ 390586523SEric Paris #define __FS_NOTIFY_FSNOTIFY_H_ 490586523SEric Paris 590586523SEric Paris #include <linux/list.h> 690586523SEric Paris #include <linux/fsnotify.h> 790586523SEric Paris #include <linux/srcu.h> 890586523SEric Paris #include <linux/types.h> 990586523SEric Paris 10925d1132SJan Kara #include "../mount.h" 11925d1132SJan Kara fsnotify_conn_inode(struct fsnotify_mark_connector * conn)1236f10f55SAmir Goldsteinstatic inline struct inode *fsnotify_conn_inode( 1336f10f55SAmir Goldstein struct fsnotify_mark_connector *conn) 14b812a9f5SAmir Goldstein { 1536f10f55SAmir Goldstein return container_of(conn->obj, struct inode, i_fsnotify_marks); 16b812a9f5SAmir Goldstein } 17b812a9f5SAmir Goldstein fsnotify_conn_mount(struct fsnotify_mark_connector * conn)1836f10f55SAmir Goldsteinstatic inline struct mount *fsnotify_conn_mount( 1936f10f55SAmir Goldstein struct fsnotify_mark_connector *conn) 20b812a9f5SAmir Goldstein { 2136f10f55SAmir Goldstein return container_of(conn->obj, struct mount, mnt_fsnotify_marks); 22b812a9f5SAmir Goldstein } 23b812a9f5SAmir Goldstein fsnotify_conn_sb(struct fsnotify_mark_connector * conn)241e6cb723SAmir Goldsteinstatic inline struct super_block *fsnotify_conn_sb( 251e6cb723SAmir Goldstein struct fsnotify_mark_connector *conn) 261e6cb723SAmir Goldstein { 271e6cb723SAmir Goldstein return container_of(conn->obj, struct super_block, s_fsnotify_marks); 281e6cb723SAmir Goldstein } 291e6cb723SAmir Goldstein fsnotify_connector_sb(struct fsnotify_mark_connector * conn)30ec44610fSAmir Goldsteinstatic inline struct super_block *fsnotify_connector_sb( 31ec44610fSAmir Goldstein struct fsnotify_mark_connector *conn) 32ec44610fSAmir Goldstein { 33ec44610fSAmir Goldstein switch (conn->type) { 34ec44610fSAmir Goldstein case FSNOTIFY_OBJ_TYPE_INODE: 35ec44610fSAmir Goldstein return fsnotify_conn_inode(conn)->i_sb; 36ec44610fSAmir Goldstein case FSNOTIFY_OBJ_TYPE_VFSMOUNT: 37ec44610fSAmir Goldstein return fsnotify_conn_mount(conn)->mnt.mnt_sb; 38ec44610fSAmir Goldstein case FSNOTIFY_OBJ_TYPE_SB: 39ec44610fSAmir Goldstein return fsnotify_conn_sb(conn); 40ec44610fSAmir Goldstein default: 41ec44610fSAmir Goldstein return NULL; 42ec44610fSAmir Goldstein } 43ec44610fSAmir Goldstein } 44ec44610fSAmir Goldstein 45a2d8bc6cSEric Paris /* destroy all events sitting in this groups notification queue */ 46a2d8bc6cSEric Paris extern void fsnotify_flush_notify(struct fsnotify_group *group); 47a2d8bc6cSEric Paris 4875c1be48SEric Paris /* protects reads of inode and vfsmount marks list */ 4975c1be48SEric Paris extern struct srcu_struct fsnotify_mark_srcu; 5075c1be48SEric Paris 518edc6e16SJan Kara /* compare two groups for sorting of marks lists */ 528edc6e16SJan Kara extern int fsnotify_compare_groups(struct fsnotify_group *a, 538edc6e16SJan Kara struct fsnotify_group *b); 548edc6e16SJan Kara 559b6e5434SAmir Goldstein /* Destroy all marks attached to an object via connector */ 569b6e5434SAmir Goldstein extern void fsnotify_destroy_marks(fsnotify_connp_t *connp); 57925d1132SJan Kara /* run the list of all marks associated with inode and destroy them */ fsnotify_clear_marks_by_inode(struct inode * inode)58925d1132SJan Karastatic inline void fsnotify_clear_marks_by_inode(struct inode *inode) 59925d1132SJan Kara { 6008991e83SJan Kara fsnotify_destroy_marks(&inode->i_fsnotify_marks); 61925d1132SJan Kara } 62925d1132SJan Kara /* run the list of all marks associated with vfsmount and destroy them */ fsnotify_clear_marks_by_mount(struct vfsmount * mnt)63925d1132SJan Karastatic inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt) 64925d1132SJan Kara { 6508991e83SJan Kara fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks); 66925d1132SJan Kara } 671e6cb723SAmir Goldstein /* run the list of all marks associated with sb and destroy them */ fsnotify_clear_marks_by_sb(struct super_block * sb)681e6cb723SAmir Goldsteinstatic inline void fsnotify_clear_marks_by_sb(struct super_block *sb) 691e6cb723SAmir Goldstein { 701e6cb723SAmir Goldstein fsnotify_destroy_marks(&sb->s_fsnotify_marks); 711e6cb723SAmir Goldstein } 7235e48176SJan Kara 73c28f7e56SEric Paris /* 74c28f7e56SEric Paris * update the dentry->d_flags of all of inode's children to indicate if inode cares 75c28f7e56SEric Paris * about events that happen to its children. 76c28f7e56SEric Paris */ 77*fc1b1e13SAmir Goldstein extern void fsnotify_set_children_dentry_flags(struct inode *inode); 78a2d8bc6cSEric Paris 794a0b20beSBen Dooks extern struct kmem_cache *fsnotify_mark_connector_cachep; 804a0b20beSBen Dooks 8190586523SEric Paris #endif /* __FS_NOTIFY_FSNOTIFY_H_ */ 82