[GitHub/mt8127/android_kernel_alcatel_ttab.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>
#include <linux/bug.h>

/*
 * fsnotify_d_instantiate - instantiate a dentry for inode
 */
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
 */
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, 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, FS_MOVE_SELF, moved->d_inode, 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_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(inode, dentry, AUDIT_TYPE_CHILD_CREATE);

	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(dir, new_dentry, AUDIT_TYPE_CHILD_CREATE);

	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(inode, dentry, AUDIT_TYPE_CHILD_CREATE);

	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;

	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_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_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>
187f1882	17	#include <linux/bug.h>
0eeca283	18
c32ccd87 NP	19	/*
c32ccd87 NP	20	* fsnotify_d_instantiate - instantiate a dentry for inode
c32ccd87	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	64	* fsnotify_d_move - dentry has been moved
c32ccd87	65	*/
e61ce867	66	static inline void fsnotify_d_move(struct dentry *dentry)
c32ccd87	67	{
c28f7e56	68	/*
e61ce867 EP	69	* On move we need to update dentry->d_flags to indicate if the new parent
e61ce867 EP	70	* cares about events from this dentry.
c28f7e56	71	*/
e61ce867	72	__fsnotify_update_dcache_flags(dentry);
c32ccd87 NP	73	}
c32ccd87 NP	74
90586523 EP	75	/*
	76	* fsnotify_link_count - inode's link count changed
	77	*/
	78	static inline void fsnotify_link_count(struct inode *inode)
	79	{
47882c6f	80	fsnotify(inode, FS_ATTRIB, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
90586523 EP	81	}
90586523 EP	82
0eeca283 RL	83	/*
	84	* fsnotify_move - file old_name at old_dir was moved to new_name at new_dir
	85	*/
	86	static inline void fsnotify_move(struct inode old_dir, struct inode new_dir,
59b0df21	87	const unsigned char *old_name,
5a190ae6	88	int isdir, struct inode target, struct dentry moved)
0eeca283	89	{
5a190ae6	90	struct inode *source = moved->d_inode;
47882c6f	91	u32 fs_cookie = fsnotify_get_cookie();
ff52cc21 EP	92	__u32 old_dir_mask = (FS_EVENT_ON_CHILD \| FS_MOVED_FROM);
ff52cc21 EP	93	__u32 new_dir_mask = (FS_EVENT_ON_CHILD \| FS_MOVED_TO);
59b0df21	94	const unsigned char *new_name = moved->d_name.name;
0eeca283	95
ff52cc21 EP	96	if (old_dir == new_dir)
ff52cc21 EP	97	old_dir_mask \|= FS_DN_RENAME;
0eeca283	98
90586523	99	if (isdir) {
b29866aa EP	100	old_dir_mask \|= FS_ISDIR;
b29866aa EP	101	new_dir_mask \|= FS_ISDIR;
90586523 EP	102	}
90586523 EP	103
65c62025 JK	104	fsnotify(old_dir, old_dir_mask, source, FSNOTIFY_EVENT_INODE, old_name,
	105	fs_cookie);
	106	fsnotify(new_dir, new_dir_mask, source, FSNOTIFY_EVENT_INODE, new_name,
	107	fs_cookie);
90586523	108
2dfc1cae	109	if (target)
90586523	110	fsnotify_link_count(target);
89204c40	111
2dfc1cae	112	if (source)
47882c6f	113	fsnotify(source, FS_MOVE_SELF, moved->d_inode, FSNOTIFY_EVENT_INODE, NULL, 0);
4fa6b5ec	114	audit_inode_child(new_dir, moved, AUDIT_TYPE_CHILD_CREATE);
0eeca283 RL	115	}
0eeca283 RL	116
3be25f49 EP	117	/*
	118	* fsnotify_inode_delete - and inode is being evicted from cache, clean up is needed
	119	*/
	120	static inline void fsnotify_inode_delete(struct inode *inode)
	121	{
	122	__fsnotify_inode_delete(inode);
	123	}
	124
ca9c726e AG	125	/*
	126	* fsnotify_vfsmount_delete - a vfsmount is being destroyed, clean up is needed
	127	*/
	128	static inline void fsnotify_vfsmount_delete(struct vfsmount *mnt)
	129	{
	130	__fsnotify_vfsmount_delete(mnt);
	131	}
	132
7a91bf7f JM	133	/*
	134	* fsnotify_nameremove - a filename was removed from a directory
	135	*/
	136	static inline void fsnotify_nameremove(struct dentry *dentry, int isdir)
	137	{
90586523 EP	138	__u32 mask = FS_DELETE;
90586523 EP	139
7a91bf7f	140	if (isdir)
b29866aa	141	mask \|= FS_ISDIR;
c28f7e56	142
28c60e37	143	fsnotify_parent(NULL, dentry, mask);
7a91bf7f JM	144	}
	145
	146	/*
	147	* fsnotify_inoderemove - an inode is going away
	148	*/
	149	static inline void fsnotify_inoderemove(struct inode *inode)
	150	{
47882c6f	151	fsnotify(inode, FS_DELETE_SELF, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
3be25f49	152	__fsnotify_inode_delete(inode);
ece95912 JK	153	}
ece95912 JK	154
0eeca283 RL	155	/*
	156	* fsnotify_create - 'name' was linked in
	157	*/
f38aa942	158	static inline void fsnotify_create(struct inode inode, struct dentry dentry)
0eeca283	159	{
4fa6b5ec	160	audit_inode_child(inode, dentry, AUDIT_TYPE_CHILD_CREATE);
90586523	161
47882c6f	162	fsnotify(inode, FS_CREATE, dentry->d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
0eeca283 RL	163	}
0eeca283 RL	164
ece95912 JK	165	/*
	166	* fsnotify_link - new hardlink in 'inode' directory
	167	* Note: We have to pass also the linked inode ptr as some filesystems leave
	168	* new_dentry->d_inode NULL and instantiate inode pointer later
	169	*/
	170	static inline void fsnotify_link(struct inode dir, struct inode inode, struct dentry *new_dentry)
	171	{
ece95912	172	fsnotify_link_count(inode);
4fa6b5ec	173	audit_inode_child(dir, new_dentry, AUDIT_TYPE_CHILD_CREATE);
90586523	174
47882c6f	175	fsnotify(dir, FS_CREATE, inode, FSNOTIFY_EVENT_INODE, new_dentry->d_name.name, 0);
ece95912 JK	176	}
ece95912 JK	177
0eeca283 RL	178	/*
	179	* fsnotify_mkdir - directory 'name' was created
	180	*/
f38aa942	181	static inline void fsnotify_mkdir(struct inode inode, struct dentry dentry)
0eeca283	182	{
b29866aa	183	__u32 mask = (FS_CREATE \| FS_ISDIR);
90586523 EP	184	struct inode *d_inode = dentry->d_inode;
90586523 EP	185
4fa6b5ec	186	audit_inode_child(inode, dentry, AUDIT_TYPE_CHILD_CREATE);
90586523	187
47882c6f	188	fsnotify(inode, mask, d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
0eeca283 RL	189	}
	190
	191	/*
	192	* fsnotify_access - file was read
	193	*/
2a12a9d7	194	static inline void fsnotify_access(struct file *file)
0eeca283	195	{
2069601b LT	196	struct path *path = &file->f_path;
2069601b LT	197	struct inode *inode = path->dentry->d_inode;
90586523	198	__u32 mask = FS_ACCESS;
0eeca283 RL	199
0eeca283 RL	200	if (S_ISDIR(inode->i_mode))
b29866aa	201	mask \|= FS_ISDIR;
0eeca283	202
ecf081d1	203	if (!(file->f_mode & FMODE_NONOTIFY)) {
2069601b LT	204	fsnotify_parent(path, NULL, mask);
2069601b LT	205	fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
ecf081d1	206	}
0eeca283 RL	207	}
	208
	209	/*
	210	* fsnotify_modify - file was modified
	211	*/
2a12a9d7	212	static inline void fsnotify_modify(struct file *file)
0eeca283	213	{
2069601b LT	214	struct path *path = &file->f_path;
2069601b LT	215	struct inode *inode = path->dentry->d_inode;
90586523	216	__u32 mask = FS_MODIFY;
0eeca283 RL	217
0eeca283 RL	218	if (S_ISDIR(inode->i_mode))
b29866aa	219	mask \|= FS_ISDIR;
0eeca283	220
ecf081d1	221	if (!(file->f_mode & FMODE_NONOTIFY)) {
2069601b LT	222	fsnotify_parent(path, NULL, mask);
2069601b LT	223	fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
ecf081d1	224	}
0eeca283 RL	225	}
	226
	227	/*
	228	* fsnotify_open - file was opened
	229	*/
2a12a9d7	230	static inline void fsnotify_open(struct file *file)
0eeca283	231	{
2069601b LT	232	struct path *path = &file->f_path;
2069601b LT	233	struct inode *inode = path->dentry->d_inode;
90586523	234	__u32 mask = FS_OPEN;
0eeca283 RL	235
0eeca283 RL	236	if (S_ISDIR(inode->i_mode))
b29866aa	237	mask \|= FS_ISDIR;
0eeca283	238
6bff7ecc LS	239	fsnotify_parent(path, NULL, mask);
6bff7ecc LS	240	fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
0eeca283 RL	241	}
	242
	243	/*
	244	* fsnotify_close - file was closed
	245	*/
	246	static inline void fsnotify_close(struct file *file)
	247	{
2069601b	248	struct path *path = &file->f_path;
496ad9aa	249	struct inode *inode = file_inode(file);
aeb5d727	250	fmode_t mode = file->f_mode;
90586523	251	__u32 mask = (mode & FMODE_WRITE) ? FS_CLOSE_WRITE : FS_CLOSE_NOWRITE;
0eeca283 RL	252
0eeca283 RL	253	if (S_ISDIR(inode->i_mode))
b29866aa	254	mask \|= FS_ISDIR;
0eeca283	255
ecf081d1	256	if (!(file->f_mode & FMODE_NONOTIFY)) {
2069601b LT	257	fsnotify_parent(path, NULL, mask);
2069601b LT	258	fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
ecf081d1	259	}
0eeca283 RL	260	}
	261
	262	/*
	263	* fsnotify_xattr - extended attributes were changed
	264	*/
	265	static inline void fsnotify_xattr(struct dentry *dentry)
	266	{
	267	struct inode *inode = dentry->d_inode;
90586523	268	__u32 mask = FS_ATTRIB;
0eeca283 RL	269
0eeca283 RL	270	if (S_ISDIR(inode->i_mode))
b29866aa	271	mask \|= FS_ISDIR;
0eeca283	272
28c60e37	273	fsnotify_parent(NULL, dentry, mask);
47882c6f	274	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
0eeca283 RL	275	}
	276
	277	/*
	278	* fsnotify_change - notify_change event. file was modified and/or metadata
	279	* was changed.
	280	*/
	281	static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid)
	282	{
	283	struct inode *inode = dentry->d_inode;
3c5119c0 EP	284	__u32 mask = 0;
	285
	286	if (ia_valid & ATTR_UID)
	287	mask \|= FS_ATTRIB;
	288	if (ia_valid & ATTR_GID)
	289	mask \|= FS_ATTRIB;
	290	if (ia_valid & ATTR_SIZE)
	291	mask \|= FS_MODIFY;
0eeca283	292
0eeca283 RL	293	/* both times implies a utime(s) call */
0eeca283 RL	294	if ((ia_valid & (ATTR_ATIME \| ATTR_MTIME)) == (ATTR_ATIME \| ATTR_MTIME))
3c5119c0 EP	295	mask \|= FS_ATTRIB;
	296	else if (ia_valid & ATTR_ATIME)
	297	mask \|= FS_ACCESS;
	298	else if (ia_valid & ATTR_MTIME)
	299	mask \|= FS_MODIFY;
	300
	301	if (ia_valid & ATTR_MODE)
	302	mask \|= FS_ATTRIB;
0eeca283	303
3c5119c0	304	if (mask) {
0eeca283	305	if (S_ISDIR(inode->i_mode))
b29866aa	306	mask \|= FS_ISDIR;
28c60e37 EP	307
28c60e37 EP	308	fsnotify_parent(NULL, dentry, mask);
47882c6f	309	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
0eeca283 RL	310	}
	311	}
	312
2dfc1cae	313	#if defined(CONFIG_FSNOTIFY) /* notify helpers */
0eeca283 RL	314
	315	/*
	316	* fsnotify_oldname_init - save off the old filename before we change it
	317	*/
59b0df21	318	static inline const unsigned char fsnotify_oldname_init(const unsigned char name)
0eeca283 RL	319	{
	320	return kstrdup(name, GFP_KERNEL);
	321	}
	322
	323	/*
	324	* fsnotify_oldname_free - free the name we got from fsnotify_oldname_init
	325	*/
59b0df21	326	static inline void fsnotify_oldname_free(const unsigned char *old_name)
0eeca283 RL	327	{
	328	kfree(old_name);
	329	}
	330
28c60e37	331	#else /* CONFIG_FSNOTIFY */
0eeca283	332
59b0df21	333	static inline const char fsnotify_oldname_init(const unsigned char name)
0eeca283 RL	334	{
	335	return NULL;
	336	}
	337
59b0df21	338	static inline void fsnotify_oldname_free(const unsigned char *old_name)
0eeca283 RL	339	{
	340	}
	341
28c60e37	342	#endif /* CONFIG_FSNOTIFY */
0eeca283	343
0eeca283	344	#endif /* _LINUX_FS_NOTIFY_H */