[net-next-2.6.git] / include / linux / fsnotify.h

#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>

/*
 * fsnotify_d_instantiate - instantiate a dentry for inode
 * Called with dcache_lock held.
 */
static inline void fsnotify_d_instantiate(struct dentry *dentry,
					  struct inode *inode)
{
	__fsnotify_d_instantiate(dentry, inode);
}

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

	return __fsnotify_parent(path, dentry, mask);
}

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

	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;
	else if (mask & MAY_READ)
		fsnotify_mask = FS_ACCESS_PERM;
	else
		BUG();

	ret = fsnotify_parent(path, NULL, fsnotify_mask);
	if (ret)
		return ret;

	return fsnotify(inode, fsnotify_mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}

/*
 * fsnotify_d_move - dentry has been moved
 * Called with dcache_lock and dentry->d_lock held.
 */
static inline void fsnotify_d_move(struct dentry *dentry)
{
	/*
	 * On move we need to update dentry->d_flags to indicate if the new parent
	 * cares about events from this dentry.
	 */
	__fsnotify_update_dcache_flags(dentry);
}

/*
 * fsnotify_link_count - inode's link count changed
 */
static inline void fsnotify_link_count(struct inode *inode)
{
	fsnotify(inode, FS_ATTRIB, 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 unsigned char *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_EVENT_ON_CHILD | FS_MOVED_FROM);
	__u32 new_dir_mask = (FS_EVENT_ON_CHILD | FS_MOVED_TO);
	const unsigned char *new_name = moved->d_name.name;

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

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

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

	if (target)
		fsnotify_link_count(target);

	if (source)
		fsnotify(source, FS_MOVE_SELF, moved->d_inode, FSNOTIFY_EVENT_INODE, NULL, 0);
	audit_inode_child(moved, new_dir);
}

/*
 * 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_nameremove - a filename was removed from a directory
 */
static inline void fsnotify_nameremove(struct dentry *dentry, int isdir)
{
	__u32 mask = FS_DELETE;

	if (isdir)
		mask |= FS_ISDIR;

	fsnotify_parent(NULL, dentry, mask);
}

/*
 * fsnotify_inoderemove - an inode is going away
 */
static inline void fsnotify_inoderemove(struct inode *inode)
{
	fsnotify(inode, FS_DELETE_SELF, 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(dentry, inode);

	fsnotify(inode, FS_CREATE, dentry->d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
}

/*
 * 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(new_dentry, dir);

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

/*
 * fsnotify_mkdir - directory 'name' was created
 */
static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
{
	__u32 mask = (FS_CREATE | FS_ISDIR);
	struct inode *d_inode = dentry->d_inode;

	audit_inode_child(dentry, inode);

	fsnotify(inode, mask, d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
}

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

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

	if (!(file->f_mode & FMODE_NONOTIFY)) {
		fsnotify_parent(path, NULL, mask);
		fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
	}
}

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

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

	if (!(file->f_mode & FMODE_NONOTIFY)) {
		fsnotify_parent(path, NULL, mask);
		fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
	}
}

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

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

	/* FMODE_NONOTIFY must never be set from user */
	file->f_mode &= ~FMODE_NONOTIFY;

	fsnotify_parent(path, NULL, mask);
	fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}

/*
 * fsnotify_close - file was closed
 */
static inline void fsnotify_close(struct file *file)
{
	struct path *path = &file->f_path;
	struct inode *inode = file->f_path.dentry->d_inode;
	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_parent(path, NULL, mask);
		fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
	}
}

/*
 * 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);
	}
}

#if defined(CONFIG_FSNOTIFY)	/* notify helpers */

/*
 * fsnotify_oldname_init - save off the old filename before we change it
 */
static inline const unsigned char *fsnotify_oldname_init(const unsigned char *name)
{
	return kstrdup(name, GFP_KERNEL);
}

/*
 * fsnotify_oldname_free - free the name we got from fsnotify_oldname_init
 */
static inline void fsnotify_oldname_free(const unsigned char *old_name)
{
	kfree(old_name);
}

#else	/* CONFIG_FSNOTIFY */

static inline const char *fsnotify_oldname_init(const unsigned char *name)
{
	return NULL;
}

static inline void fsnotify_oldname_free(const unsigned char *old_name)
{
}

#endif	/*  CONFIG_FSNOTIFY */

#endif	/* _LINUX_FS_NOTIFY_H */
Commit	Line	Data
0eeca283 RL	1	#ifndef _LINUX_FS_NOTIFY_H
	2	#define _LINUX_FS_NOTIFY_H
	3
	4	/*
	5	* include/linux/fsnotify.h - generic hooks for filesystem notification, to
	6	* reduce in-source duplication from both dnotify and inotify.
	7	*
	8	* We don't compile any of this away in some complicated menagerie of ifdefs.
	9	* Instead, we rely on the code inside to optimize away as needed.
	10	*
	11	* (C) Copyright 2005 Robert Love
	12	*/
	13
90586523	14	#include <linux/fsnotify_backend.h>
73241ccc	15	#include <linux/audit.h>
5a0e3ad6	16	#include <linux/slab.h>
0eeca283	17
c32ccd87 NP	18	/*
	19	* fsnotify_d_instantiate - instantiate a dentry for inode
	20	* Called with dcache_lock held.
	21	*/
e61ce867 EP	22	static inline void fsnotify_d_instantiate(struct dentry *dentry,
e61ce867 EP	23	struct inode *inode)
c32ccd87	24	{
e61ce867	25	__fsnotify_d_instantiate(dentry, inode);
c32ccd87 NP	26	}
c32ccd87 NP	27
c28f7e56	28	/* Notify this dentry's parent about a child's events. */
52420392	29	static inline int fsnotify_parent(struct path path, struct dentry dentry, __u32 mask)
c28f7e56	30	{
72acc854	31	if (!dentry)
2069601b	32	dentry = path->dentry;
28c60e37	33
52420392	34	return __fsnotify_parent(path, dentry, mask);
c28f7e56 EP	35	}
c28f7e56 EP	36
c4ec54b4 EP	37	/* simple call site for access decisions */
	38	static inline int fsnotify_perm(struct file *file, int mask)
	39	{
2069601b LT	40	struct path *path = &file->f_path;
2069601b LT	41	struct inode *inode = path->dentry->d_inode;
fb1cfb88	42	__u32 fsnotify_mask = 0;
52420392	43	int ret;
c4ec54b4 EP	44
	45	if (file->f_mode & FMODE_NONOTIFY)
	46	return 0;
	47	if (!(mask & (MAY_READ \| MAY_OPEN)))
	48	return 0;
c4ec54b4 EP	49	if (mask & MAY_OPEN)
c4ec54b4 EP	50	fsnotify_mask = FS_OPEN_PERM;
fb1cfb88 EP	51	else if (mask & MAY_READ)
	52	fsnotify_mask = FS_ACCESS_PERM;
	53	else
	54	BUG();
c4ec54b4	55
52420392 EP	56	ret = fsnotify_parent(path, NULL, fsnotify_mask);
	57	if (ret)
	58	return ret;
	59
2069601b	60	return fsnotify(inode, fsnotify_mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
c4ec54b4 EP	61	}
c4ec54b4 EP	62
c32ccd87	63	/*
e61ce867 EP	64	* fsnotify_d_move - dentry has been moved
e61ce867 EP	65	* Called with dcache_lock and dentry->d_lock held.
c32ccd87	66	*/
e61ce867	67	static inline void fsnotify_d_move(struct dentry *dentry)
c32ccd87	68	{
c28f7e56	69	/*
e61ce867 EP	70	* On move we need to update dentry->d_flags to indicate if the new parent
e61ce867 EP	71	* cares about events from this dentry.
c28f7e56	72	*/
e61ce867	73	__fsnotify_update_dcache_flags(dentry);
c32ccd87 NP	74	}
c32ccd87 NP	75
90586523 EP	76	/*
	77	* fsnotify_link_count - inode's link count changed
	78	*/
	79	static inline void fsnotify_link_count(struct inode *inode)
	80	{
47882c6f	81	fsnotify(inode, FS_ATTRIB, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
90586523 EP	82	}
90586523 EP	83
0eeca283 RL	84	/*
	85	* fsnotify_move - file old_name at old_dir was moved to new_name at new_dir
	86	*/
	87	static inline void fsnotify_move(struct inode old_dir, struct inode new_dir,
59b0df21	88	const unsigned char *old_name,
5a190ae6	89	int isdir, struct inode target, struct dentry moved)
0eeca283	90	{
5a190ae6	91	struct inode *source = moved->d_inode;
47882c6f	92	u32 fs_cookie = fsnotify_get_cookie();
ff52cc21 EP	93	__u32 old_dir_mask = (FS_EVENT_ON_CHILD \| FS_MOVED_FROM);
ff52cc21 EP	94	__u32 new_dir_mask = (FS_EVENT_ON_CHILD \| FS_MOVED_TO);
59b0df21	95	const unsigned char *new_name = moved->d_name.name;
0eeca283	96
ff52cc21 EP	97	if (old_dir == new_dir)
ff52cc21 EP	98	old_dir_mask \|= FS_DN_RENAME;
0eeca283	99
90586523	100	if (isdir) {
b29866aa EP	101	old_dir_mask \|= FS_ISDIR;
b29866aa EP	102	new_dir_mask \|= FS_ISDIR;
90586523 EP	103	}
90586523 EP	104
47882c6f EP	105	fsnotify(old_dir, old_dir_mask, old_dir, FSNOTIFY_EVENT_INODE, old_name, fs_cookie);
47882c6f EP	106	fsnotify(new_dir, new_dir_mask, new_dir, FSNOTIFY_EVENT_INODE, new_name, fs_cookie);
90586523	107
2dfc1cae	108	if (target)
90586523	109	fsnotify_link_count(target);
89204c40	110
2dfc1cae	111	if (source)
47882c6f	112	fsnotify(source, FS_MOVE_SELF, moved->d_inode, FSNOTIFY_EVENT_INODE, NULL, 0);
cccc6bba	113	audit_inode_child(moved, new_dir);
0eeca283 RL	114	}
0eeca283 RL	115
3be25f49 EP	116	/*
	117	* fsnotify_inode_delete - and inode is being evicted from cache, clean up is needed
	118	*/
	119	static inline void fsnotify_inode_delete(struct inode *inode)
	120	{
	121	__fsnotify_inode_delete(inode);
	122	}
	123
ca9c726e AG	124	/*
	125	* fsnotify_vfsmount_delete - a vfsmount is being destroyed, clean up is needed
	126	*/
	127	static inline void fsnotify_vfsmount_delete(struct vfsmount *mnt)
	128	{
	129	__fsnotify_vfsmount_delete(mnt);
	130	}
	131
7a91bf7f JM	132	/*
	133	* fsnotify_nameremove - a filename was removed from a directory
	134	*/
	135	static inline void fsnotify_nameremove(struct dentry *dentry, int isdir)
	136	{
90586523 EP	137	__u32 mask = FS_DELETE;
90586523 EP	138
7a91bf7f	139	if (isdir)
b29866aa	140	mask \|= FS_ISDIR;
c28f7e56	141
28c60e37	142	fsnotify_parent(NULL, dentry, mask);
7a91bf7f JM	143	}
	144
	145	/*
	146	* fsnotify_inoderemove - an inode is going away
	147	*/
	148	static inline void fsnotify_inoderemove(struct inode *inode)
	149	{
47882c6f	150	fsnotify(inode, FS_DELETE_SELF, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
3be25f49	151	__fsnotify_inode_delete(inode);
ece95912 JK	152	}
ece95912 JK	153
0eeca283 RL	154	/*
	155	* fsnotify_create - 'name' was linked in
	156	*/
f38aa942	157	static inline void fsnotify_create(struct inode inode, struct dentry dentry)
0eeca283	158	{
cccc6bba	159	audit_inode_child(dentry, inode);
90586523	160
47882c6f	161	fsnotify(inode, FS_CREATE, dentry->d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
0eeca283 RL	162	}
0eeca283 RL	163
ece95912 JK	164	/*
	165	* fsnotify_link - new hardlink in 'inode' directory
	166	* Note: We have to pass also the linked inode ptr as some filesystems leave
	167	* new_dentry->d_inode NULL and instantiate inode pointer later
	168	*/
	169	static inline void fsnotify_link(struct inode dir, struct inode inode, struct dentry *new_dentry)
	170	{
ece95912	171	fsnotify_link_count(inode);
cccc6bba	172	audit_inode_child(new_dentry, dir);
90586523	173
47882c6f	174	fsnotify(dir, FS_CREATE, inode, FSNOTIFY_EVENT_INODE, new_dentry->d_name.name, 0);
ece95912 JK	175	}
ece95912 JK	176
0eeca283 RL	177	/*
	178	* fsnotify_mkdir - directory 'name' was created
	179	*/
f38aa942	180	static inline void fsnotify_mkdir(struct inode inode, struct dentry dentry)
0eeca283	181	{
b29866aa	182	__u32 mask = (FS_CREATE \| FS_ISDIR);
90586523 EP	183	struct inode *d_inode = dentry->d_inode;
90586523 EP	184
cccc6bba	185	audit_inode_child(dentry, inode);
90586523	186
47882c6f	187	fsnotify(inode, mask, d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
0eeca283 RL	188	}
	189
	190	/*
	191	* fsnotify_access - file was read
	192	*/
2a12a9d7	193	static inline void fsnotify_access(struct file *file)
0eeca283	194	{
2069601b LT	195	struct path *path = &file->f_path;
2069601b LT	196	struct inode *inode = path->dentry->d_inode;
90586523	197	__u32 mask = FS_ACCESS;
0eeca283 RL	198
0eeca283 RL	199	if (S_ISDIR(inode->i_mode))
b29866aa	200	mask \|= FS_ISDIR;
0eeca283	201
ecf081d1	202	if (!(file->f_mode & FMODE_NONOTIFY)) {
2069601b LT	203	fsnotify_parent(path, NULL, mask);
2069601b LT	204	fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
ecf081d1	205	}
0eeca283 RL	206	}
	207
	208	/*
	209	* fsnotify_modify - file was modified
	210	*/
2a12a9d7	211	static inline void fsnotify_modify(struct file *file)
0eeca283	212	{
2069601b LT	213	struct path *path = &file->f_path;
2069601b LT	214	struct inode *inode = path->dentry->d_inode;
90586523	215	__u32 mask = FS_MODIFY;
0eeca283 RL	216
0eeca283 RL	217	if (S_ISDIR(inode->i_mode))
b29866aa	218	mask \|= FS_ISDIR;
0eeca283	219
ecf081d1	220	if (!(file->f_mode & FMODE_NONOTIFY)) {
2069601b LT	221	fsnotify_parent(path, NULL, mask);
2069601b LT	222	fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
ecf081d1	223	}
0eeca283 RL	224	}
	225
	226	/*
	227	* fsnotify_open - file was opened
	228	*/
2a12a9d7	229	static inline void fsnotify_open(struct file *file)
0eeca283	230	{
2069601b LT	231	struct path *path = &file->f_path;
2069601b LT	232	struct inode *inode = path->dentry->d_inode;
90586523	233	__u32 mask = FS_OPEN;
0eeca283 RL	234
0eeca283 RL	235	if (S_ISDIR(inode->i_mode))
b29866aa	236	mask \|= FS_ISDIR;
0eeca283	237
6bff7ecc LS	238	/* FMODE_NONOTIFY must never be set from user */
	239	file->f_mode &= ~FMODE_NONOTIFY;
	240
	241	fsnotify_parent(path, NULL, mask);
	242	fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
0eeca283 RL	243	}
	244
	245	/*
	246	* fsnotify_close - file was closed
	247	*/
	248	static inline void fsnotify_close(struct file *file)
	249	{
2069601b	250	struct path *path = &file->f_path;
28c60e37	251	struct inode *inode = file->f_path.dentry->d_inode;
aeb5d727	252	fmode_t mode = file->f_mode;
90586523	253	__u32 mask = (mode & FMODE_WRITE) ? FS_CLOSE_WRITE : FS_CLOSE_NOWRITE;
0eeca283 RL	254
0eeca283 RL	255	if (S_ISDIR(inode->i_mode))
b29866aa	256	mask \|= FS_ISDIR;
0eeca283	257
ecf081d1	258	if (!(file->f_mode & FMODE_NONOTIFY)) {
2069601b LT	259	fsnotify_parent(path, NULL, mask);
2069601b LT	260	fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
ecf081d1	261	}
0eeca283 RL	262	}
	263
	264	/*
	265	* fsnotify_xattr - extended attributes were changed
	266	*/
	267	static inline void fsnotify_xattr(struct dentry *dentry)
	268	{
	269	struct inode *inode = dentry->d_inode;
90586523	270	__u32 mask = FS_ATTRIB;
0eeca283 RL	271
0eeca283 RL	272	if (S_ISDIR(inode->i_mode))
b29866aa	273	mask \|= FS_ISDIR;
0eeca283	274
28c60e37	275	fsnotify_parent(NULL, dentry, mask);
47882c6f	276	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
0eeca283 RL	277	}
	278
	279	/*
	280	* fsnotify_change - notify_change event. file was modified and/or metadata
	281	* was changed.
	282	*/
	283	static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid)
	284	{
	285	struct inode *inode = dentry->d_inode;
3c5119c0 EP	286	__u32 mask = 0;
	287
	288	if (ia_valid & ATTR_UID)
	289	mask \|= FS_ATTRIB;
	290	if (ia_valid & ATTR_GID)
	291	mask \|= FS_ATTRIB;
	292	if (ia_valid & ATTR_SIZE)
	293	mask \|= FS_MODIFY;
0eeca283	294
0eeca283 RL	295	/* both times implies a utime(s) call */
0eeca283 RL	296	if ((ia_valid & (ATTR_ATIME \| ATTR_MTIME)) == (ATTR_ATIME \| ATTR_MTIME))
3c5119c0 EP	297	mask \|= FS_ATTRIB;
	298	else if (ia_valid & ATTR_ATIME)
	299	mask \|= FS_ACCESS;
	300	else if (ia_valid & ATTR_MTIME)
	301	mask \|= FS_MODIFY;
	302
	303	if (ia_valid & ATTR_MODE)
	304	mask \|= FS_ATTRIB;
0eeca283	305
3c5119c0	306	if (mask) {
0eeca283	307	if (S_ISDIR(inode->i_mode))
b29866aa	308	mask \|= FS_ISDIR;
28c60e37 EP	309
28c60e37 EP	310	fsnotify_parent(NULL, dentry, mask);
47882c6f	311	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
0eeca283 RL	312	}
	313	}
	314
2dfc1cae	315	#if defined(CONFIG_FSNOTIFY) /* notify helpers */
0eeca283 RL	316
	317	/*
	318	* fsnotify_oldname_init - save off the old filename before we change it
	319	*/
59b0df21	320	static inline const unsigned char fsnotify_oldname_init(const unsigned char name)
0eeca283 RL	321	{
	322	return kstrdup(name, GFP_KERNEL);
	323	}
	324
	325	/*
	326	* fsnotify_oldname_free - free the name we got from fsnotify_oldname_init
	327	*/
59b0df21	328	static inline void fsnotify_oldname_free(const unsigned char *old_name)
0eeca283 RL	329	{
	330	kfree(old_name);
	331	}
	332
28c60e37	333	#else /* CONFIG_FSNOTIFY */
0eeca283	334
59b0df21	335	static inline const char fsnotify_oldname_init(const unsigned char name)
0eeca283 RL	336	{
	337	return NULL;
	338	}
	339
59b0df21	340	static inline void fsnotify_oldname_free(const unsigned char *old_name)
0eeca283 RL	341	{
	342	}
	343
28c60e37	344	#endif /* CONFIG_FSNOTIFY */
0eeca283	345
0eeca283	346	#endif /* _LINUX_FS_NOTIFY_H */