[linux-2.6-block.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, 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(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
47882c6f EP	104	fsnotify(old_dir, old_dir_mask, old_dir, FSNOTIFY_EVENT_INODE, old_name, fs_cookie);
47882c6f EP	105	fsnotify(new_dir, new_dir_mask, new_dir, FSNOTIFY_EVENT_INODE, new_name, fs_cookie);
90586523	106
2dfc1cae	107	if (target)
90586523	108	fsnotify_link_count(target);
89204c40	109
2dfc1cae	110	if (source)
47882c6f	111	fsnotify(source, FS_MOVE_SELF, moved->d_inode, FSNOTIFY_EVENT_INODE, NULL, 0);
4fa6b5ec	112	audit_inode_child(new_dir, moved, AUDIT_TYPE_CHILD_CREATE);
0eeca283 RL	113	}
0eeca283 RL	114
3be25f49 EP	115	/*
	116	* fsnotify_inode_delete - and inode is being evicted from cache, clean up is needed
	117	*/
	118	static inline void fsnotify_inode_delete(struct inode *inode)
	119	{
	120	__fsnotify_inode_delete(inode);
	121	}
	122
ca9c726e AG	123	/*
	124	* fsnotify_vfsmount_delete - a vfsmount is being destroyed, clean up is needed
	125	*/
	126	static inline void fsnotify_vfsmount_delete(struct vfsmount *mnt)
	127	{
	128	__fsnotify_vfsmount_delete(mnt);
	129	}
	130
7a91bf7f JM	131	/*
	132	* fsnotify_nameremove - a filename was removed from a directory
	133	*/
	134	static inline void fsnotify_nameremove(struct dentry *dentry, int isdir)
	135	{
90586523 EP	136	__u32 mask = FS_DELETE;
90586523 EP	137
7a91bf7f	138	if (isdir)
b29866aa	139	mask \|= FS_ISDIR;
c28f7e56	140
28c60e37	141	fsnotify_parent(NULL, dentry, mask);
7a91bf7f JM	142	}
	143
	144	/*
	145	* fsnotify_inoderemove - an inode is going away
	146	*/
	147	static inline void fsnotify_inoderemove(struct inode *inode)
	148	{
47882c6f	149	fsnotify(inode, FS_DELETE_SELF, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
3be25f49	150	__fsnotify_inode_delete(inode);
ece95912 JK	151	}
ece95912 JK	152
0eeca283 RL	153	/*
	154	* fsnotify_create - 'name' was linked in
	155	*/
f38aa942	156	static inline void fsnotify_create(struct inode inode, struct dentry dentry)
0eeca283	157	{
4fa6b5ec	158	audit_inode_child(inode, dentry, AUDIT_TYPE_CHILD_CREATE);
90586523	159
47882c6f	160	fsnotify(inode, FS_CREATE, dentry->d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
0eeca283 RL	161	}
0eeca283 RL	162
ece95912 JK	163	/*
	164	* fsnotify_link - new hardlink in 'inode' directory
	165	* Note: We have to pass also the linked inode ptr as some filesystems leave
	166	* new_dentry->d_inode NULL and instantiate inode pointer later
	167	*/
	168	static inline void fsnotify_link(struct inode dir, struct inode inode, struct dentry *new_dentry)
	169	{
ece95912	170	fsnotify_link_count(inode);
4fa6b5ec	171	audit_inode_child(dir, new_dentry, AUDIT_TYPE_CHILD_CREATE);
90586523	172
47882c6f	173	fsnotify(dir, FS_CREATE, inode, FSNOTIFY_EVENT_INODE, new_dentry->d_name.name, 0);
ece95912 JK	174	}
ece95912 JK	175
0eeca283 RL	176	/*
	177	* fsnotify_mkdir - directory 'name' was created
	178	*/
f38aa942	179	static inline void fsnotify_mkdir(struct inode inode, struct dentry dentry)
0eeca283	180	{
b29866aa	181	__u32 mask = (FS_CREATE \| FS_ISDIR);
90586523 EP	182	struct inode *d_inode = dentry->d_inode;
90586523 EP	183
4fa6b5ec	184	audit_inode_child(inode, dentry, AUDIT_TYPE_CHILD_CREATE);
90586523	185
47882c6f	186	fsnotify(inode, mask, d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
0eeca283 RL	187	}
	188
	189	/*
	190	* fsnotify_access - file was read
	191	*/
2a12a9d7	192	static inline void fsnotify_access(struct file *file)
0eeca283	193	{
2069601b LT	194	struct path *path = &file->f_path;
2069601b LT	195	struct inode *inode = path->dentry->d_inode;
90586523	196	__u32 mask = FS_ACCESS;
0eeca283 RL	197
0eeca283 RL	198	if (S_ISDIR(inode->i_mode))
b29866aa	199	mask \|= FS_ISDIR;
0eeca283	200
ecf081d1	201	if (!(file->f_mode & FMODE_NONOTIFY)) {
2069601b LT	202	fsnotify_parent(path, NULL, mask);
2069601b LT	203	fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
ecf081d1	204	}
0eeca283 RL	205	}
	206
	207	/*
	208	* fsnotify_modify - file was modified
	209	*/
2a12a9d7	210	static inline void fsnotify_modify(struct file *file)
0eeca283	211	{
2069601b LT	212	struct path *path = &file->f_path;
2069601b LT	213	struct inode *inode = path->dentry->d_inode;
90586523	214	__u32 mask = FS_MODIFY;
0eeca283 RL	215
0eeca283 RL	216	if (S_ISDIR(inode->i_mode))
b29866aa	217	mask \|= FS_ISDIR;
0eeca283	218
ecf081d1	219	if (!(file->f_mode & FMODE_NONOTIFY)) {
2069601b LT	220	fsnotify_parent(path, NULL, mask);
2069601b LT	221	fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
ecf081d1	222	}
0eeca283 RL	223	}
	224
	225	/*
	226	* fsnotify_open - file was opened
	227	*/
2a12a9d7	228	static inline void fsnotify_open(struct file *file)
0eeca283	229	{
2069601b LT	230	struct path *path = &file->f_path;
2069601b LT	231	struct inode *inode = path->dentry->d_inode;
90586523	232	__u32 mask = FS_OPEN;
0eeca283 RL	233
0eeca283 RL	234	if (S_ISDIR(inode->i_mode))
b29866aa	235	mask \|= FS_ISDIR;
0eeca283	236
6bff7ecc LS	237	fsnotify_parent(path, NULL, mask);
6bff7ecc LS	238	fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
0eeca283 RL	239	}
	240
	241	/*
	242	* fsnotify_close - file was closed
	243	*/
	244	static inline void fsnotify_close(struct file *file)
	245	{
2069601b	246	struct path *path = &file->f_path;
496ad9aa	247	struct inode *inode = file_inode(file);
aeb5d727	248	fmode_t mode = file->f_mode;
90586523	249	__u32 mask = (mode & FMODE_WRITE) ? FS_CLOSE_WRITE : FS_CLOSE_NOWRITE;
0eeca283 RL	250
0eeca283 RL	251	if (S_ISDIR(inode->i_mode))
b29866aa	252	mask \|= FS_ISDIR;
0eeca283	253
ecf081d1	254	if (!(file->f_mode & FMODE_NONOTIFY)) {
2069601b LT	255	fsnotify_parent(path, NULL, mask);
2069601b LT	256	fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
ecf081d1	257	}
0eeca283 RL	258	}
	259
	260	/*
	261	* fsnotify_xattr - extended attributes were changed
	262	*/
	263	static inline void fsnotify_xattr(struct dentry *dentry)
	264	{
	265	struct inode *inode = dentry->d_inode;
90586523	266	__u32 mask = FS_ATTRIB;
0eeca283 RL	267
0eeca283 RL	268	if (S_ISDIR(inode->i_mode))
b29866aa	269	mask \|= FS_ISDIR;
0eeca283	270
28c60e37	271	fsnotify_parent(NULL, dentry, mask);
47882c6f	272	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
0eeca283 RL	273	}
	274
	275	/*
	276	* fsnotify_change - notify_change event. file was modified and/or metadata
	277	* was changed.
	278	*/
	279	static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid)
	280	{
	281	struct inode *inode = dentry->d_inode;
3c5119c0 EP	282	__u32 mask = 0;
	283
	284	if (ia_valid & ATTR_UID)
	285	mask \|= FS_ATTRIB;
	286	if (ia_valid & ATTR_GID)
	287	mask \|= FS_ATTRIB;
	288	if (ia_valid & ATTR_SIZE)
	289	mask \|= FS_MODIFY;
0eeca283	290
0eeca283 RL	291	/* both times implies a utime(s) call */
0eeca283 RL	292	if ((ia_valid & (ATTR_ATIME \| ATTR_MTIME)) == (ATTR_ATIME \| ATTR_MTIME))
3c5119c0 EP	293	mask \|= FS_ATTRIB;
	294	else if (ia_valid & ATTR_ATIME)
	295	mask \|= FS_ACCESS;
	296	else if (ia_valid & ATTR_MTIME)
	297	mask \|= FS_MODIFY;
	298
	299	if (ia_valid & ATTR_MODE)
	300	mask \|= FS_ATTRIB;
0eeca283	301
3c5119c0	302	if (mask) {
0eeca283	303	if (S_ISDIR(inode->i_mode))
b29866aa	304	mask \|= FS_ISDIR;
28c60e37 EP	305
28c60e37 EP	306	fsnotify_parent(NULL, dentry, mask);
47882c6f	307	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
0eeca283 RL	308	}
	309	}
	310
2dfc1cae	311	#if defined(CONFIG_FSNOTIFY) /* notify helpers */
0eeca283 RL	312
	313	/*
	314	* fsnotify_oldname_init - save off the old filename before we change it
	315	*/
59b0df21	316	static inline const unsigned char fsnotify_oldname_init(const unsigned char name)
0eeca283 RL	317	{
	318	return kstrdup(name, GFP_KERNEL);
	319	}
	320
	321	/*
	322	* fsnotify_oldname_free - free the name we got from fsnotify_oldname_init
	323	*/
59b0df21	324	static inline void fsnotify_oldname_free(const unsigned char *old_name)
0eeca283 RL	325	{
	326	kfree(old_name);
	327	}
	328
28c60e37	329	#else /* CONFIG_FSNOTIFY */
0eeca283	330
59b0df21	331	static inline const char fsnotify_oldname_init(const unsigned char name)
0eeca283 RL	332	{
	333	return NULL;
	334	}
	335
59b0df21	336	static inline void fsnotify_oldname_free(const unsigned char *old_name)
0eeca283 RL	337	{
	338	}
	339
28c60e37	340	#endif /* CONFIG_FSNOTIFY */
0eeca283	341
0eeca283	342	#endif /* _LINUX_FS_NOTIFY_H */