cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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fsnotify.h (2745B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __FS_NOTIFY_FSNOTIFY_H_
      3#define __FS_NOTIFY_FSNOTIFY_H_
      4
      5#include <linux/list.h>
      6#include <linux/fsnotify.h>
      7#include <linux/srcu.h>
      8#include <linux/types.h>
      9
     10#include "../mount.h"
     11
     12static inline struct inode *fsnotify_conn_inode(
     13				struct fsnotify_mark_connector *conn)
     14{
     15	return container_of(conn->obj, struct inode, i_fsnotify_marks);
     16}
     17
     18static inline struct mount *fsnotify_conn_mount(
     19				struct fsnotify_mark_connector *conn)
     20{
     21	return container_of(conn->obj, struct mount, mnt_fsnotify_marks);
     22}
     23
     24static inline struct super_block *fsnotify_conn_sb(
     25				struct fsnotify_mark_connector *conn)
     26{
     27	return container_of(conn->obj, struct super_block, s_fsnotify_marks);
     28}
     29
     30static inline struct super_block *fsnotify_connector_sb(
     31				struct fsnotify_mark_connector *conn)
     32{
     33	switch (conn->type) {
     34	case FSNOTIFY_OBJ_TYPE_INODE:
     35		return fsnotify_conn_inode(conn)->i_sb;
     36	case FSNOTIFY_OBJ_TYPE_VFSMOUNT:
     37		return fsnotify_conn_mount(conn)->mnt.mnt_sb;
     38	case FSNOTIFY_OBJ_TYPE_SB:
     39		return fsnotify_conn_sb(conn);
     40	default:
     41		return NULL;
     42	}
     43}
     44
     45/* destroy all events sitting in this groups notification queue */
     46extern void fsnotify_flush_notify(struct fsnotify_group *group);
     47
     48/* protects reads of inode and vfsmount marks list */
     49extern struct srcu_struct fsnotify_mark_srcu;
     50
     51/* compare two groups for sorting of marks lists */
     52extern int fsnotify_compare_groups(struct fsnotify_group *a,
     53				   struct fsnotify_group *b);
     54
     55/* Destroy all marks attached to an object via connector */
     56extern void fsnotify_destroy_marks(fsnotify_connp_t *connp);
     57/* run the list of all marks associated with inode and destroy them */
     58static inline void fsnotify_clear_marks_by_inode(struct inode *inode)
     59{
     60	fsnotify_destroy_marks(&inode->i_fsnotify_marks);
     61}
     62/* run the list of all marks associated with vfsmount and destroy them */
     63static inline void fsnotify_clear_marks_by_mount(struct vfsmount *mnt)
     64{
     65	fsnotify_destroy_marks(&real_mount(mnt)->mnt_fsnotify_marks);
     66}
     67/* run the list of all marks associated with sb and destroy them */
     68static inline void fsnotify_clear_marks_by_sb(struct super_block *sb)
     69{
     70	fsnotify_destroy_marks(&sb->s_fsnotify_marks);
     71}
     72
     73/*
     74 * update the dentry->d_flags of all of inode's children to indicate if inode cares
     75 * about events that happen to its children.
     76 */
     77extern void __fsnotify_update_child_dentry_flags(struct inode *inode);
     78
     79/* allocate and destroy and event holder to attach events to notification/access queues */
     80extern struct fsnotify_event_holder *fsnotify_alloc_event_holder(void);
     81extern void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder);
     82
     83extern struct kmem_cache *fsnotify_mark_connector_cachep;
     84
     85#endif	/* __FS_NOTIFY_FSNOTIFY_H_ */