[mirror_ubuntu-focal-kernel.git] / include / linux / fsnotify.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_FS_NOTIFY_H
#define _LINUX_FS_NOTIFY_H

/*
 * include/linux/fsnotify.h - generic hooks for filesystem notification, to
 * reduce in-source duplication from both dnotify and inotify.
 *
 * We don't compile any of this away in some complicated menagerie of ifdefs.
 * Instead, we rely on the code inside to optimize away as needed.
 *
 * (C) Copyright 2005 Robert Love
 */

#include <linux/fsnotify_backend.h>
#include <linux/audit.h>
#include <linux/slab.h>
#include <linux/bug.h>

/*
 * Notify this @dir inode about a change in the directory entry @dentry.
 *
 * Unlike fsnotify_parent(), the event will be reported regardless of the
 * FS_EVENT_ON_CHILD mask on the parent inode.
 */
static inline int fsnotify_dirent(struct inode *dir, struct dentry *dentry,
				  __u32 mask)
{
	return fsnotify(dir, mask, d_inode(dentry), FSNOTIFY_EVENT_INODE,
			&dentry->d_name, 0);
}

/* Notify this dentry's parent about a child's events. */
static inline int fsnotify_parent(const struct path *path,
				  struct dentry *dentry, __u32 mask)
{
	if (!dentry)
		dentry = path->dentry;

	return __fsnotify_parent(path, dentry, mask);
}

/*
 * Simple wrapper to consolidate calls fsnotify_parent()/fsnotify() when
 * an event is on a path.
 */
static inline int fsnotify_path(struct inode *inode, const struct path *path,
				__u32 mask)
{
	int ret = fsnotify_parent(path, NULL, mask);

	if (ret)
		return ret;
	return fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}

/* Simple call site for access decisions */
static inline int fsnotify_perm(struct file *file, int mask)
{
	int ret;
	const struct path *path = &file->f_path;
	struct inode *inode = file_inode(file);
	__u32 fsnotify_mask = 0;

	if (file->f_mode & FMODE_NONOTIFY)
		return 0;
	if (!(mask & (MAY_READ | MAY_OPEN)))
		return 0;
	if (mask & MAY_OPEN) {
		fsnotify_mask = FS_OPEN_PERM;

		if (file->f_flags & __FMODE_EXEC) {
			ret = fsnotify_path(inode, path, FS_OPEN_EXEC_PERM);

			if (ret)
				return ret;
		}
	} else if (mask & MAY_READ) {
		fsnotify_mask = FS_ACCESS_PERM;
	}

	if (S_ISDIR(inode->i_mode))
		fsnotify_mask |= FS_ISDIR;

	return fsnotify_path(inode, path, fsnotify_mask);
}

/*
 * fsnotify_link_count - inode's link count changed
 */
static inline void fsnotify_link_count(struct inode *inode)
{
	__u32 mask = FS_ATTRIB;

	if (S_ISDIR(inode->i_mode))
		mask |= FS_ISDIR;

	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
}

/*
 * fsnotify_move - file old_name at old_dir was moved to new_name at new_dir
 */
static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
				 const struct qstr *old_name,
				 int isdir, struct inode *target,
				 struct dentry *moved)
{
	struct inode *source = moved->d_inode;
	u32 fs_cookie = fsnotify_get_cookie();
	__u32 old_dir_mask = FS_MOVED_FROM;
	__u32 new_dir_mask = FS_MOVED_TO;
	__u32 mask = FS_MOVE_SELF;
	const struct qstr *new_name = &moved->d_name;

	if (old_dir == new_dir)
		old_dir_mask |= FS_DN_RENAME;

	if (isdir) {
		old_dir_mask |= FS_ISDIR;
		new_dir_mask |= FS_ISDIR;
		mask |= FS_ISDIR;
	}

	fsnotify(old_dir, old_dir_mask, source, FSNOTIFY_EVENT_INODE, old_name,
		 fs_cookie);
	fsnotify(new_dir, new_dir_mask, source, FSNOTIFY_EVENT_INODE, new_name,
		 fs_cookie);

	if (target)
		fsnotify_link_count(target);

	if (source)
		fsnotify(source, mask, source, FSNOTIFY_EVENT_INODE, NULL, 0);
	audit_inode_child(new_dir, moved, AUDIT_TYPE_CHILD_CREATE);
}

/*
 * fsnotify_inode_delete - and inode is being evicted from cache, clean up is needed
 */
static inline void fsnotify_inode_delete(struct inode *inode)
{
	__fsnotify_inode_delete(inode);
}

/*
 * fsnotify_vfsmount_delete - a vfsmount is being destroyed, clean up is needed
 */
static inline void fsnotify_vfsmount_delete(struct vfsmount *mnt)
{
	__fsnotify_vfsmount_delete(mnt);
}

/*
 * fsnotify_inoderemove - an inode is going away
 */
static inline void fsnotify_inoderemove(struct inode *inode)
{
	__u32 mask = FS_DELETE_SELF;

	if (S_ISDIR(inode->i_mode))
		mask |= FS_ISDIR;

	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
	__fsnotify_inode_delete(inode);
}

/*
 * fsnotify_create - 'name' was linked in
 */
static inline void fsnotify_create(struct inode *inode, struct dentry *dentry)
{
	audit_inode_child(inode, dentry, AUDIT_TYPE_CHILD_CREATE);

	fsnotify_dirent(inode, dentry, FS_CREATE);
}

/*
 * fsnotify_link - new hardlink in 'inode' directory
 * Note: We have to pass also the linked inode ptr as some filesystems leave
 *   new_dentry->d_inode NULL and instantiate inode pointer later
 */
static inline void fsnotify_link(struct inode *dir, struct inode *inode, struct dentry *new_dentry)
{
	fsnotify_link_count(inode);
	audit_inode_child(dir, new_dentry, AUDIT_TYPE_CHILD_CREATE);

	fsnotify(dir, FS_CREATE, inode, FSNOTIFY_EVENT_INODE, &new_dentry->d_name, 0);
}

/*
 * fsnotify_delete - @dentry was unlinked and unhashed
 *
 * Caller must make sure that dentry->d_name is stable.
 *
 * Note: unlike fsnotify_unlink(), we have to pass also the unlinked inode
 * as this may be called after d_delete() and old_dentry may be negative.
 */
static inline void fsnotify_delete(struct inode *dir, struct inode *inode,
				   struct dentry *dentry)
{
	__u32 mask = FS_DELETE;

	if (S_ISDIR(inode->i_mode))
		mask |= FS_ISDIR;

	fsnotify(dir, mask, inode, FSNOTIFY_EVENT_INODE, &dentry->d_name, 0);
}

/**
 * d_delete_notify - delete a dentry and call fsnotify_delete()
 * @dentry: The dentry to delete
 *
 * This helper is used to guaranty that the unlinked inode cannot be found
 * by lookup of this name after fsnotify_delete() event has been delivered.
 */
static inline void d_delete_notify(struct inode *dir, struct dentry *dentry)
{
	struct inode *inode = d_inode(dentry);

	ihold(inode);
	d_delete(dentry);
	fsnotify_delete(dir, inode, dentry);
	iput(inode);
}

/*
 * fsnotify_unlink - 'name' was unlinked
 *
 * Caller must make sure that dentry->d_name is stable.
 */
static inline void fsnotify_unlink(struct inode *dir, struct dentry *dentry)
{
	if (WARN_ON_ONCE(d_is_negative(dentry)))
		return;

	fsnotify_delete(dir, d_inode(dentry), dentry);
}

/*
 * fsnotify_mkdir - directory 'name' was created
 */
static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
{
	audit_inode_child(inode, dentry, AUDIT_TYPE_CHILD_CREATE);

	fsnotify_dirent(inode, dentry, FS_CREATE | FS_ISDIR);
}

/*
 * fsnotify_rmdir - directory 'name' was removed
 *
 * Caller must make sure that dentry->d_name is stable.
 */
static inline void fsnotify_rmdir(struct inode *dir, struct dentry *dentry)
{
	if (WARN_ON_ONCE(d_is_negative(dentry)))
		return;

	fsnotify_delete(dir, d_inode(dentry), dentry);
}

/*
 * fsnotify_access - file was read
 */
static inline void fsnotify_access(struct file *file)
{
	const struct path *path = &file->f_path;
	struct inode *inode = file_inode(file);
	__u32 mask = FS_ACCESS;

	if (S_ISDIR(inode->i_mode))
		mask |= FS_ISDIR;

	if (!(file->f_mode & FMODE_NONOTIFY))
		fsnotify_path(inode, path, mask);
}

/*
 * fsnotify_modify - file was modified
 */
static inline void fsnotify_modify(struct file *file)
{
	const struct path *path = &file->f_path;
	struct inode *inode = file_inode(file);
	__u32 mask = FS_MODIFY;

	if (S_ISDIR(inode->i_mode))
		mask |= FS_ISDIR;

	if (!(file->f_mode & FMODE_NONOTIFY))
		fsnotify_path(inode, path, mask);
}

/*
 * fsnotify_open - file was opened
 */
static inline void fsnotify_open(struct file *file)
{
	const struct path *path = &file->f_path;
	struct inode *inode = file_inode(file);
	__u32 mask = FS_OPEN;

	if (S_ISDIR(inode->i_mode))
		mask |= FS_ISDIR;
	if (file->f_flags & __FMODE_EXEC)
		mask |= FS_OPEN_EXEC;

	fsnotify_path(inode, path, mask);
}

/*
 * fsnotify_close - file was closed
 */
static inline void fsnotify_close(struct file *file)
{
	const struct path *path = &file->f_path;
	struct inode *inode = file_inode(file);
	fmode_t mode = file->f_mode;
	__u32 mask = (mode & FMODE_WRITE) ? FS_CLOSE_WRITE : FS_CLOSE_NOWRITE;

	if (S_ISDIR(inode->i_mode))
		mask |= FS_ISDIR;

	if (!(file->f_mode & FMODE_NONOTIFY))
		fsnotify_path(inode, path, mask);
}

/*
 * fsnotify_xattr - extended attributes were changed
 */
static inline void fsnotify_xattr(struct dentry *dentry)
{
	struct inode *inode = dentry->d_inode;
	__u32 mask = FS_ATTRIB;

	if (S_ISDIR(inode->i_mode))
		mask |= FS_ISDIR;

	fsnotify_parent(NULL, dentry, mask);
	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
}

/*
 * fsnotify_change - notify_change event.  file was modified and/or metadata
 * was changed.
 */
static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid)
{
	struct inode *inode = dentry->d_inode;
	__u32 mask = 0;

	if (ia_valid & ATTR_UID)
		mask |= FS_ATTRIB;
	if (ia_valid & ATTR_GID)
		mask |= FS_ATTRIB;
	if (ia_valid & ATTR_SIZE)
		mask |= FS_MODIFY;

	/* both times implies a utime(s) call */
	if ((ia_valid & (ATTR_ATIME | ATTR_MTIME)) == (ATTR_ATIME | ATTR_MTIME))
		mask |= FS_ATTRIB;
	else if (ia_valid & ATTR_ATIME)
		mask |= FS_ACCESS;
	else if (ia_valid & ATTR_MTIME)
		mask |= FS_MODIFY;

	if (ia_valid & ATTR_MODE)
		mask |= FS_ATTRIB;

	if (mask) {
		if (S_ISDIR(inode->i_mode))
			mask |= FS_ISDIR;

		fsnotify_parent(NULL, dentry, mask);
		fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
	}
}

#endif	/* _LINUX_FS_NOTIFY_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
0eeca283 RL	2	#ifndef _LINUX_FS_NOTIFY_H
	3	#define _LINUX_FS_NOTIFY_H
	4
	5	/*
	6	* include/linux/fsnotify.h - generic hooks for filesystem notification, to
	7	* reduce in-source duplication from both dnotify and inotify.
	8	*
	9	* We don't compile any of this away in some complicated menagerie of ifdefs.
	10	* Instead, we rely on the code inside to optimize away as needed.
	11	*
	12	* (C) Copyright 2005 Robert Love
	13	*/
	14
90586523	15	#include <linux/fsnotify_backend.h>
73241ccc	16	#include <linux/audit.h>
5a0e3ad6	17	#include <linux/slab.h>
187f1882	18	#include <linux/bug.h>
0eeca283	19
5f02a877 AG	20	/*
	21	* Notify this @dir inode about a change in the directory entry @dentry.
	22	*
	23	* Unlike fsnotify_parent(), the event will be reported regardless of the
	24	* FS_EVENT_ON_CHILD mask on the parent inode.
	25	*/
	26	static inline int fsnotify_dirent(struct inode dir, struct dentry dentry,
	27	__u32 mask)
	28	{
	29	return fsnotify(dir, mask, d_inode(dentry), FSNOTIFY_EVENT_INODE,
25b229df	30	&dentry->d_name, 0);
5f02a877 AG	31	}
5f02a877 AG	32
c28f7e56	33	/* Notify this dentry's parent about a child's events. */
5f02a877 AG	34	static inline int fsnotify_parent(const struct path *path,
5f02a877 AG	35	struct dentry *dentry, __u32 mask)
c28f7e56	36	{
72acc854	37	if (!dentry)
2069601b	38	dentry = path->dentry;
28c60e37	39
52420392	40	return __fsnotify_parent(path, dentry, mask);
c28f7e56 EP	41	}
c28f7e56 EP	42
a704bba5 MB	43	/*
	44	* Simple wrapper to consolidate calls fsnotify_parent()/fsnotify() when
	45	* an event is on a path.
	46	*/
	47	static inline int fsnotify_path(struct inode inode, const struct path path,
	48	__u32 mask)
	49	{
	50	int ret = fsnotify_parent(path, NULL, mask);
	51
	52	if (ret)
	53	return ret;
	54	return fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
	55	}
	56
66917a31	57	/* Simple call site for access decisions */
c4ec54b4 EP	58	static inline int fsnotify_perm(struct file *file, int mask)
c4ec54b4 EP	59	{
66917a31	60	int ret;
40212d53	61	const struct path *path = &file->f_path;
573e1784	62	struct inode *inode = file_inode(file);
fb1cfb88	63	__u32 fsnotify_mask = 0;
c4ec54b4 EP	64
	65	if (file->f_mode & FMODE_NONOTIFY)
	66	return 0;
	67	if (!(mask & (MAY_READ \| MAY_OPEN)))
	68	return 0;
66917a31	69	if (mask & MAY_OPEN) {
c4ec54b4	70	fsnotify_mask = FS_OPEN_PERM;
66917a31 MB	71
	72	if (file->f_flags & __FMODE_EXEC) {
	73	ret = fsnotify_path(inode, path, FS_OPEN_EXEC_PERM);
	74
	75	if (ret)
	76	return ret;
	77	}
	78	} else if (mask & MAY_READ) {
fb1cfb88	79	fsnotify_mask = FS_ACCESS_PERM;
66917a31	80	}
c4ec54b4	81
0321e03c AG	82	if (S_ISDIR(inode->i_mode))
	83	fsnotify_mask \|= FS_ISDIR;
	84
a704bba5	85	return fsnotify_path(inode, path, fsnotify_mask);
c4ec54b4 EP	86	}
c4ec54b4 EP	87
90586523 EP	88	/*
	89	* fsnotify_link_count - inode's link count changed
	90	*/
	91	static inline void fsnotify_link_count(struct inode *inode)
	92	{
0a20df7e AG	93	__u32 mask = FS_ATTRIB;
	94
	95	if (S_ISDIR(inode->i_mode))
	96	mask \|= FS_ISDIR;
	97
	98	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
90586523 EP	99	}
90586523 EP	100
0eeca283 RL	101	/*
	102	* fsnotify_move - file old_name at old_dir was moved to new_name at new_dir
	103	*/
	104	static inline void fsnotify_move(struct inode old_dir, struct inode new_dir,
f4ec3a3d	105	const struct qstr *old_name,
0a20df7e AG	106	int isdir, struct inode *target,
0a20df7e AG	107	struct dentry *moved)
0eeca283	108	{
5a190ae6	109	struct inode *source = moved->d_inode;
47882c6f	110	u32 fs_cookie = fsnotify_get_cookie();
5f02a877 AG	111	__u32 old_dir_mask = FS_MOVED_FROM;
5f02a877 AG	112	__u32 new_dir_mask = FS_MOVED_TO;
0a20df7e	113	__u32 mask = FS_MOVE_SELF;
25b229df	114	const struct qstr *new_name = &moved->d_name;
0eeca283	115
ff52cc21 EP	116	if (old_dir == new_dir)
ff52cc21 EP	117	old_dir_mask \|= FS_DN_RENAME;
0eeca283	118
90586523	119	if (isdir) {
b29866aa EP	120	old_dir_mask \|= FS_ISDIR;
b29866aa EP	121	new_dir_mask \|= FS_ISDIR;
0a20df7e	122	mask \|= FS_ISDIR;
90586523 EP	123	}
90586523 EP	124
25b229df	125	fsnotify(old_dir, old_dir_mask, source, FSNOTIFY_EVENT_INODE, old_name,
6ee8e25f JK	126	fs_cookie);
	127	fsnotify(new_dir, new_dir_mask, source, FSNOTIFY_EVENT_INODE, new_name,
	128	fs_cookie);
90586523	129
2dfc1cae	130	if (target)
90586523	131	fsnotify_link_count(target);
89204c40	132
2dfc1cae	133	if (source)
0a20df7e	134	fsnotify(source, mask, source, FSNOTIFY_EVENT_INODE, NULL, 0);
4fa6b5ec	135	audit_inode_child(new_dir, moved, AUDIT_TYPE_CHILD_CREATE);
0eeca283 RL	136	}
0eeca283 RL	137
3be25f49 EP	138	/*
	139	* fsnotify_inode_delete - and inode is being evicted from cache, clean up is needed
	140	*/
	141	static inline void fsnotify_inode_delete(struct inode *inode)
	142	{
	143	__fsnotify_inode_delete(inode);
	144	}
	145
ca9c726e AG	146	/*
	147	* fsnotify_vfsmount_delete - a vfsmount is being destroyed, clean up is needed
	148	*/
	149	static inline void fsnotify_vfsmount_delete(struct vfsmount *mnt)
	150	{
	151	__fsnotify_vfsmount_delete(mnt);
	152	}
	153
7a91bf7f JM	154	/*
	155	* fsnotify_inoderemove - an inode is going away
	156	*/
	157	static inline void fsnotify_inoderemove(struct inode *inode)
	158	{
0a20df7e AG	159	__u32 mask = FS_DELETE_SELF;
	160
	161	if (S_ISDIR(inode->i_mode))
	162	mask \|= FS_ISDIR;
	163
	164	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
3be25f49	165	__fsnotify_inode_delete(inode);
ece95912 JK	166	}
ece95912 JK	167
0eeca283 RL	168	/*
	169	* fsnotify_create - 'name' was linked in
	170	*/
f38aa942	171	static inline void fsnotify_create(struct inode inode, struct dentry dentry)
0eeca283	172	{
4fa6b5ec	173	audit_inode_child(inode, dentry, AUDIT_TYPE_CHILD_CREATE);
90586523	174
5f02a877	175	fsnotify_dirent(inode, dentry, FS_CREATE);
0eeca283 RL	176	}
0eeca283 RL	177
ece95912 JK	178	/*
	179	* fsnotify_link - new hardlink in 'inode' directory
	180	* Note: We have to pass also the linked inode ptr as some filesystems leave
	181	* new_dentry->d_inode NULL and instantiate inode pointer later
	182	*/
	183	static inline void fsnotify_link(struct inode dir, struct inode inode, struct dentry *new_dentry)
	184	{
ece95912	185	fsnotify_link_count(inode);
4fa6b5ec	186	audit_inode_child(dir, new_dentry, AUDIT_TYPE_CHILD_CREATE);
90586523	187
25b229df	188	fsnotify(dir, FS_CREATE, inode, FSNOTIFY_EVENT_INODE, &new_dentry->d_name, 0);
ece95912 JK	189	}
ece95912 JK	190
a7dd760a AG	191	/*
	192	* fsnotify_delete - @dentry was unlinked and unhashed
	193	*
	194	* Caller must make sure that dentry->d_name is stable.
	195	*
	196	* Note: unlike fsnotify_unlink(), we have to pass also the unlinked inode
	197	* as this may be called after d_delete() and old_dentry may be negative.
	198	*/
	199	static inline void fsnotify_delete(struct inode dir, struct inode inode,
	200	struct dentry *dentry)
	201	{
	202	__u32 mask = FS_DELETE;
	203
	204	if (S_ISDIR(inode->i_mode))
	205	mask \|= FS_ISDIR;
	206
	207	fsnotify(dir, mask, inode, FSNOTIFY_EVENT_INODE, &dentry->d_name, 0);
	208	}
	209
	210	/**
	211	* d_delete_notify - delete a dentry and call fsnotify_delete()
	212	* @dentry: The dentry to delete
	213	*
	214	* This helper is used to guaranty that the unlinked inode cannot be found
	215	* by lookup of this name after fsnotify_delete() event has been delivered.
	216	*/
	217	static inline void d_delete_notify(struct inode dir, struct dentry dentry)
	218	{
	219	struct inode *inode = d_inode(dentry);
	220
	221	ihold(inode);
	222	d_delete(dentry);
	223	fsnotify_delete(dir, inode, dentry);
	224	iput(inode);
	225	}
	226
116b9731 AG	227	/*
	228	* fsnotify_unlink - 'name' was unlinked
	229	*
	230	* Caller must make sure that dentry->d_name is stable.
	231	*/
	232	static inline void fsnotify_unlink(struct inode dir, struct dentry dentry)
	233	{
a7dd760a AG	234	if (WARN_ON_ONCE(d_is_negative(dentry)))
a7dd760a AG	235	return;
116b9731	236
a7dd760a	237	fsnotify_delete(dir, d_inode(dentry), dentry);
116b9731 AG	238	}
116b9731 AG	239
0eeca283 RL	240	/*
	241	* fsnotify_mkdir - directory 'name' was created
	242	*/
f38aa942	243	static inline void fsnotify_mkdir(struct inode inode, struct dentry dentry)
0eeca283	244	{
4fa6b5ec	245	audit_inode_child(inode, dentry, AUDIT_TYPE_CHILD_CREATE);
90586523	246
5f02a877	247	fsnotify_dirent(inode, dentry, FS_CREATE \| FS_ISDIR);
0eeca283 RL	248	}
0eeca283 RL	249
116b9731 AG	250	/*
	251	* fsnotify_rmdir - directory 'name' was removed
	252	*
	253	* Caller must make sure that dentry->d_name is stable.
	254	*/
	255	static inline void fsnotify_rmdir(struct inode dir, struct dentry dentry)
	256	{
a7dd760a AG	257	if (WARN_ON_ONCE(d_is_negative(dentry)))
a7dd760a AG	258	return;
116b9731	259
a7dd760a	260	fsnotify_delete(dir, d_inode(dentry), dentry);
116b9731 AG	261	}
116b9731 AG	262
0eeca283 RL	263	/*
	264	* fsnotify_access - file was read
	265	*/
2a12a9d7	266	static inline void fsnotify_access(struct file *file)
0eeca283	267	{
40212d53	268	const struct path *path = &file->f_path;
573e1784	269	struct inode *inode = file_inode(file);
90586523	270	__u32 mask = FS_ACCESS;
0eeca283 RL	271
0eeca283 RL	272	if (S_ISDIR(inode->i_mode))
b29866aa	273	mask \|= FS_ISDIR;
0eeca283	274
a704bba5 MB	275	if (!(file->f_mode & FMODE_NONOTIFY))
a704bba5 MB	276	fsnotify_path(inode, path, mask);
0eeca283 RL	277	}
	278
	279	/*
	280	* fsnotify_modify - file was modified
	281	*/
2a12a9d7	282	static inline void fsnotify_modify(struct file *file)
0eeca283	283	{
40212d53	284	const struct path *path = &file->f_path;
573e1784	285	struct inode *inode = file_inode(file);
90586523	286	__u32 mask = FS_MODIFY;
0eeca283 RL	287
0eeca283 RL	288	if (S_ISDIR(inode->i_mode))
b29866aa	289	mask \|= FS_ISDIR;
0eeca283	290
a704bba5 MB	291	if (!(file->f_mode & FMODE_NONOTIFY))
a704bba5 MB	292	fsnotify_path(inode, path, mask);
0eeca283 RL	293	}
	294
	295	/*
	296	* fsnotify_open - file was opened
	297	*/
2a12a9d7	298	static inline void fsnotify_open(struct file *file)
0eeca283	299	{
40212d53	300	const struct path *path = &file->f_path;
573e1784	301	struct inode *inode = file_inode(file);
90586523	302	__u32 mask = FS_OPEN;
0eeca283 RL	303
0eeca283 RL	304	if (S_ISDIR(inode->i_mode))
b29866aa	305	mask \|= FS_ISDIR;
9b076f1c MB	306	if (file->f_flags & __FMODE_EXEC)
9b076f1c MB	307	mask \|= FS_OPEN_EXEC;
0eeca283	308
a704bba5	309	fsnotify_path(inode, path, mask);
0eeca283 RL	310	}
	311
	312	/*
	313	* fsnotify_close - file was closed
	314	*/
	315	static inline void fsnotify_close(struct file *file)
	316	{
40212d53	317	const struct path *path = &file->f_path;
573e1784	318	struct inode *inode = file_inode(file);
aeb5d727	319	fmode_t mode = file->f_mode;
90586523	320	__u32 mask = (mode & FMODE_WRITE) ? FS_CLOSE_WRITE : FS_CLOSE_NOWRITE;
0eeca283 RL	321
0eeca283 RL	322	if (S_ISDIR(inode->i_mode))
b29866aa	323	mask \|= FS_ISDIR;
0eeca283	324
a704bba5 MB	325	if (!(file->f_mode & FMODE_NONOTIFY))
a704bba5 MB	326	fsnotify_path(inode, path, mask);
0eeca283 RL	327	}
	328
	329	/*
	330	* fsnotify_xattr - extended attributes were changed
	331	*/
	332	static inline void fsnotify_xattr(struct dentry *dentry)
	333	{
	334	struct inode *inode = dentry->d_inode;
90586523	335	__u32 mask = FS_ATTRIB;
0eeca283 RL	336
0eeca283 RL	337	if (S_ISDIR(inode->i_mode))
b29866aa	338	mask \|= FS_ISDIR;
0eeca283	339
28c60e37	340	fsnotify_parent(NULL, dentry, mask);
47882c6f	341	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
0eeca283 RL	342	}
	343
	344	/*
	345	* fsnotify_change - notify_change event. file was modified and/or metadata
	346	* was changed.
	347	*/
	348	static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid)
	349	{
	350	struct inode *inode = dentry->d_inode;
3c5119c0 EP	351	__u32 mask = 0;
	352
	353	if (ia_valid & ATTR_UID)
	354	mask \|= FS_ATTRIB;
	355	if (ia_valid & ATTR_GID)
	356	mask \|= FS_ATTRIB;
	357	if (ia_valid & ATTR_SIZE)
	358	mask \|= FS_MODIFY;
0eeca283	359
0eeca283 RL	360	/* both times implies a utime(s) call */
0eeca283 RL	361	if ((ia_valid & (ATTR_ATIME \| ATTR_MTIME)) == (ATTR_ATIME \| ATTR_MTIME))
3c5119c0 EP	362	mask \|= FS_ATTRIB;
	363	else if (ia_valid & ATTR_ATIME)
	364	mask \|= FS_ACCESS;
	365	else if (ia_valid & ATTR_MTIME)
	366	mask \|= FS_MODIFY;
	367
	368	if (ia_valid & ATTR_MODE)
	369	mask \|= FS_ATTRIB;
0eeca283	370
3c5119c0	371	if (mask) {
0eeca283	372	if (S_ISDIR(inode->i_mode))
b29866aa	373	mask \|= FS_ISDIR;
28c60e37 EP	374
28c60e37 EP	375	fsnotify_parent(NULL, dentry, mask);
47882c6f	376	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
0eeca283 RL	377	}
	378	}
	379
0eeca283	380	#endif /* _LINUX_FS_NOTIFY_H */