Lines Matching refs:kn
33 static struct kernfs_iattrs *__kernfs_iattrs(struct kernfs_node *kn, int alloc)
40 if (kn->iattr || !alloc)
43 kn->iattr = kmem_cache_zalloc(kernfs_iattrs_cache, GFP_KERNEL);
44 if (!kn->iattr)
48 kn->iattr->ia_uid = GLOBAL_ROOT_UID;
49 kn->iattr->ia_gid = GLOBAL_ROOT_GID;
51 ktime_get_real_ts64(&kn->iattr->ia_atime);
52 kn->iattr->ia_mtime = kn->iattr->ia_atime;
53 kn->iattr->ia_ctime = kn->iattr->ia_atime;
55 simple_xattrs_init(&kn->iattr->xattrs);
56 atomic_set(&kn->iattr->nr_user_xattrs, 0);
57 atomic_set(&kn->iattr->user_xattr_size, 0);
59 ret = kn->iattr;
64 static struct kernfs_iattrs *kernfs_iattrs(struct kernfs_node *kn)
66 return __kernfs_iattrs(kn, 1);
69 static struct kernfs_iattrs *kernfs_iattrs_noalloc(struct kernfs_node *kn)
71 return __kernfs_iattrs(kn, 0);
74 int __kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr)
79 attrs = kernfs_iattrs(kn);
94 kn->mode = iattr->ia_mode;
100 * @kn: target node
105 int kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr)
110 ret = __kernfs_setattr(kn, iattr);
118 struct kernfs_node *kn = inode->i_private;
121 if (!kn)
129 error = __kernfs_setattr(kn, iattr);
143 struct kernfs_node *kn = kernfs_dentry_node(dentry);
146 attrs = kernfs_iattrs(kn);
170 static void kernfs_refresh_inode(struct kernfs_node *kn, struct inode *inode)
172 struct kernfs_iattrs *attrs = kn->iattr;
174 inode->i_mode = kn->mode;
182 if (kernfs_type(kn) == KERNFS_DIR)
183 set_nlink(inode, kn->dir.subdirs + 2);
190 struct kernfs_node *kn = inode->i_private;
193 kernfs_refresh_inode(kn, inode);
200 static void kernfs_init_inode(struct kernfs_node *kn, struct inode *inode)
202 kernfs_get(kn);
203 inode->i_private = kn;
206 inode->i_generation = kernfs_gen(kn);
208 set_default_inode_attr(inode, kn->mode);
209 kernfs_refresh_inode(kn, inode);
212 switch (kernfs_type(kn)) {
216 if (kn->flags & KERNFS_EMPTY_DIR)
220 inode->i_size = kn->attr.size;
236 * @kn: kernfs_node to allocate inode for
238 * Get inode for @kn. If such inode doesn't exist, a new inode is
248 struct inode *kernfs_get_inode(struct super_block *sb, struct kernfs_node *kn)
252 inode = iget_locked(sb, kernfs_ino(kn));
254 kernfs_init_inode(kn, inode);
268 struct kernfs_node *kn = inode->i_private;
272 kernfs_put(kn);
277 struct kernfs_node *kn;
282 kn = inode->i_private;
285 kernfs_refresh_inode(kn, inode);
291 int kernfs_xattr_get(struct kernfs_node *kn, const char *name,
294 struct kernfs_iattrs *attrs = kernfs_iattrs_noalloc(kn);
301 int kernfs_xattr_set(struct kernfs_node *kn, const char *name,
304 struct kernfs_iattrs *attrs = kernfs_iattrs(kn);
316 struct kernfs_node *kn = inode->i_private;
318 return kernfs_xattr_get(kn, name, value, size);
327 struct kernfs_node *kn = inode->i_private;
329 return kernfs_xattr_set(kn, name, value, size, flags);
332 static int kernfs_vfs_user_xattr_add(struct kernfs_node *kn,
337 atomic_t *sz = &kn->iattr->user_xattr_size;
338 atomic_t *nr = &kn->iattr->nr_user_xattrs;
366 static int kernfs_vfs_user_xattr_rm(struct kernfs_node *kn,
371 atomic_t *sz = &kn->iattr->user_xattr_size;
372 atomic_t *nr = &kn->iattr->nr_user_xattrs;
393 struct kernfs_node *kn = inode->i_private;
396 if (!(kernfs_root(kn)->flags & KERNFS_ROOT_SUPPORT_USER_XATTR))
399 attrs = kernfs_iattrs(kn);
404 return kernfs_vfs_user_xattr_add(kn, full_name, &attrs->xattrs,
407 return kernfs_vfs_user_xattr_rm(kn, full_name, &attrs->xattrs,