44 static int ceph_encode_snapfh(struct inode *inode, u32 *rawfh, int *max_len,  in ceph_encode_snapfh()  argument
45 			      struct inode *parent_inode)  in ceph_encode_snapfh()
47 	struct ceph_client *cl = ceph_inode_to_client(inode);  in ceph_encode_snapfh()
50 	u64 snapid = ceph_snap(inode);  in ceph_encode_snapfh()
62 		struct inode *dir;  in ceph_encode_snapfh()
63 		struct dentry *dentry = d_find_alias(inode);  in ceph_encode_snapfh()
79 		if (!S_ISDIR(inode->i_mode))  in ceph_encode_snapfh()
84 	sfh->ino = ceph_ino(inode);  in ceph_encode_snapfh()
90 	doutc(cl, "%p %llx.%llx ret=%d\n", inode, ceph_vinop(inode), ret);  in ceph_encode_snapfh()
94 static int ceph_encode_fh(struct inode *inode, u32 *rawfh, int *max_len,  in ceph_encode_fh()  argument
95 			  struct inode *parent_inode)  in ceph_encode_fh()
97 	struct ceph_client *cl = ceph_inode_to_client(inode);  in ceph_encode_fh()
102 	if (ceph_snap(inode) != CEPH_NOSNAP)  in ceph_encode_fh()
103 		return ceph_encode_snapfh(inode, rawfh, max_len, parent_inode);  in ceph_encode_fh()
115 		doutc(cl, "%p %llx.%llx with parent %p %llx.%llx\n", inode,  in ceph_encode_fh()
116 		      ceph_vinop(inode), parent_inode, ceph_vinop(parent_inode));  in ceph_encode_fh()
117 		cfh->ino = ceph_ino(inode);  in ceph_encode_fh()
123 		doutc(cl, "%p %llx.%llx\n", inode, ceph_vinop(inode));  in ceph_encode_fh()
124 		fh->ino = ceph_ino(inode);  in ceph_encode_fh()
131 static struct inode *__lookup_inode(struct super_block *sb, u64 ino)  in __lookup_inode()
134 	struct inode *inode;  in __lookup_inode()  local
144 	inode = ceph_find_inode(sb, vino);  in __lookup_inode()
145 	if (!inode) {  in __lookup_inode()
162 		inode = req->r_target_inode;  in __lookup_inode()
163 		if (inode)  in __lookup_inode()
164 			ihold(inode);  in __lookup_inode()
166 		if (!inode)  in __lookup_inode()
169 		if (ceph_inode_is_shutdown(inode)) {  in __lookup_inode()
170 			iput(inode);  in __lookup_inode()
174 	return inode;  in __lookup_inode()
177 struct inode *ceph_lookup_inode(struct super_block *sb, u64 ino)  in ceph_lookup_inode()
179 	struct inode *inode = __lookup_inode(sb, ino);  in ceph_lookup_inode()  local
180 	if (IS_ERR(inode))  in ceph_lookup_inode()
181 		return inode;  in ceph_lookup_inode()
182 	if (inode->i_nlink == 0) {  in ceph_lookup_inode()
183 		iput(inode);  in ceph_lookup_inode()
186 	return inode;  in ceph_lookup_inode()
191 	struct inode *inode = __lookup_inode(sb, ino);  in __fh_to_dentry()  local
192 	struct ceph_inode_info *ci = ceph_inode(inode);  in __fh_to_dentry()
195 	if (IS_ERR(inode))  in __fh_to_dentry()
196 		return ERR_CAST(inode);  in __fh_to_dentry()
198 	err = ceph_do_getattr(inode, CEPH_CAP_LINK_SHARED, false);  in __fh_to_dentry()
200 		iput(inode);  in __fh_to_dentry()
204 	if ((inode->i_nlink == 0) && !__ceph_is_file_opened(ci)) {  in __fh_to_dentry()
205 		iput(inode);  in __fh_to_dentry()
208 	return d_obtain_alias(inode);  in __fh_to_dentry()
218 	struct inode *inode;  in __snapfh_to_dentry()  local
240 	inode = ceph_find_inode(sb, vino);  in __snapfh_to_dentry()
241 	if (inode) {  in __snapfh_to_dentry()
242 		if (ceph_inode_is_shutdown(inode)) {  in __snapfh_to_dentry()
243 			iput(inode);  in __snapfh_to_dentry()
246 		return d_obtain_alias(inode);  in __snapfh_to_dentry()
271 	inode = req->r_target_inode;  in __snapfh_to_dentry()
272 	if (inode) {  in __snapfh_to_dentry()
274 			if (inode->i_nlink == 0)  in __snapfh_to_dentry()
276 			inode = ceph_get_snapdir(inode);  in __snapfh_to_dentry()
277 		} else if (ceph_snap(inode) == vino.snap) {  in __snapfh_to_dentry()
278 			ihold(inode);  in __snapfh_to_dentry()
281 			inode = ERR_PTR(-EOPNOTSUPP);  in __snapfh_to_dentry()
284 		inode = ERR_PTR(-ESTALE);  in __snapfh_to_dentry()
295 	return unlinked ? d_obtain_root(inode) : d_obtain_alias(inode);  in __snapfh_to_dentry()
328 	struct inode *inode;  in __get_parent()  local
359 	inode = req->r_target_inode;  in __get_parent()
360 	if (inode)  in __get_parent()
361 		ihold(inode);  in __get_parent()
363 	if (!inode)  in __get_parent()
366 	return d_obtain_alias(inode);  in __get_parent()
371 	struct inode *inode = d_inode(child);  in ceph_get_parent()  local
372 	struct ceph_client *cl = ceph_inode_to_client(inode);  in ceph_get_parent()
375 	if (ceph_snap(inode) != CEPH_NOSNAP) {  in ceph_get_parent()
376 		struct inode* dir;  in ceph_get_parent()
383 		dir = __lookup_inode(inode->i_sb, ceph_ino(inode));  in ceph_get_parent()
390 		if (ceph_snap(inode) != CEPH_SNAPDIR) {  in ceph_get_parent()
391 			struct inode *snapdir = ceph_get_snapdir(dir);  in ceph_get_parent()
412 	doutc(cl, "child %p %p %llx.%llx err=%ld\n", child, inode,  in ceph_get_parent()
413 	      ceph_vinop(inode), (long)PTR_ERR_OR_ZERO(dn));  in ceph_get_parent()
448 	struct inode *inode = d_inode(child);  in __get_snap_name()  local
449 	struct inode *dir = d_inode(parent);  in __get_snap_name()
450 	struct ceph_fs_client *fsc = ceph_inode_to_fs_client(inode);  in __get_snap_name()
456 	if (ceph_ino(inode) != ceph_ino(dir))  in __get_snap_name()
458 	if (ceph_snap(inode) == CEPH_SNAPDIR) {  in __get_snap_name()
486 		err = ceph_alloc_readdir_reply_buffer(req, inode);  in __get_snap_name()
513 			BUG_ON(!rde->inode.in);  in __get_snap_name()
514 			if (ceph_snap(inode) ==  in __get_snap_name()
515 			    le64_to_cpu(rde->inode.in->snapid)) {  in __get_snap_name()
544 	      inode, ceph_vinop(inode), err);  in __get_snap_name()
553 	struct inode *dir = d_inode(parent);  in ceph_get_name()
554 	struct inode *inode = d_inode(child);  in ceph_get_name()  local
558 	if (ceph_snap(inode) != CEPH_NOSNAP)  in ceph_get_name()
561 	mdsc = ceph_inode_to_fs_client(inode)->mdsc;  in ceph_get_name()
568 	req->r_inode = inode;  in ceph_get_name()
569 	ihold(inode);  in ceph_get_name()
606 	      child, inode, ceph_vinop(inode), err, err ? "" : "name ",  in ceph_get_name()