22 static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
27 			    struct dentry *dentry, unsigned int flags);
28 static int afs_d_delete(const struct dentry *dentry);
29 static void afs_d_iput(struct dentry *dentry, struct inode *inode);
35 		      struct dentry *dentry, umode_t mode, bool excl);
36 static struct dentry *afs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
37 				struct dentry *dentry, umode_t mode);
38 static int afs_rmdir(struct inode *dir, struct dentry *dentry);
39 static int afs_unlink(struct inode *dir, struct dentry *dentry);
40 static int afs_link(struct dentry *from, struct inode *dir,
41 		    struct dentry *dentry);
43 		       struct dentry *dentry, const char *content);
45 		      struct dentry *old_dentry, struct inode *new_dir,
46 		      struct dentry *new_dentry, unsigned int flags);
761 static struct inode *afs_do_lookup(struct inode *dir, struct dentry *dentry)  in afs_do_lookup()  argument
773 	_enter("{%llu},%p{%pd},", dir->i_ino, dentry, dentry);  in afs_do_lookup()
782 	cookie->name = dentry->d_name;  in afs_do_lookup()
787 	ret = afs_dir_search(dvnode, &dentry->d_name, &cookie->fids[1], &data_version);  in afs_do_lookup()
798 	dentry->d_fsdata = (void *)(unsigned long)data_version;  in afs_do_lookup()
885 		dentry->d_fsdata = (void *)(unsigned long)op->file[0].scb.status.data_version;  in afs_do_lookup()
887 		dentry->d_fsdata = (void *)(unsigned long)op->file[0].dv_before;  in afs_do_lookup()
898 static struct dentry *afs_lookup_atsys(struct inode *dir, struct dentry *dentry)  in afs_lookup_atsys()  argument
902 	struct dentry *ret;  in afs_lookup_atsys()
912 	if (dentry->d_name.len > 4) {  in afs_lookup_atsys()
913 		memcpy(p, dentry->d_name.name, dentry->d_name.len - 4);  in afs_lookup_atsys()
914 		p += dentry->d_name.len - 4;  in afs_lookup_atsys()
925 		len = dentry->d_name.len - 4 + strlen(name);  in afs_lookup_atsys()
932 		ret = lookup_noperm(&QSTR(buf), dentry->d_parent);  in afs_lookup_atsys()
952 static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,  in afs_lookup()  argument
958 	struct dentry *d;  in afs_lookup()
962 	       dvnode->fid.vid, dvnode->fid.vnode, dentry, dentry);  in afs_lookup()
964 	ASSERTCMP(d_inode(dentry), ==, NULL);  in afs_lookup()
966 	if (dentry->d_name.len >= AFSNAMEMAX) {  in afs_lookup()
983 	if (dentry->d_name.len >= 4 &&  in afs_lookup()
984 	    dentry->d_name.name[dentry->d_name.len - 4] == '@' &&  in afs_lookup()
985 	    dentry->d_name.name[dentry->d_name.len - 3] == 's' &&  in afs_lookup()
986 	    dentry->d_name.name[dentry->d_name.len - 2] == 'y' &&  in afs_lookup()
987 	    dentry->d_name.name[dentry->d_name.len - 1] == 's')  in afs_lookup()
988 		return afs_lookup_atsys(dir, dentry);  in afs_lookup()
991 	inode = afs_do_lookup(dir, dentry);  in afs_lookup()
997 	_debug("splice %p", dentry->d_inode);  in afs_lookup()
998 	d = d_splice_alias(inode, dentry);  in afs_lookup()
1000 		d->d_fsdata = dentry->d_fsdata;  in afs_lookup()
1003 		trace_afs_lookup(dvnode, &dentry->d_name, &fid);  in afs_lookup()
1012 static int afs_d_revalidate_rcu(struct afs_vnode *dvnode, struct dentry *dentry)  in afs_d_revalidate_rcu()  argument
1016 	_enter("%p", dentry);  in afs_d_revalidate_rcu()
1030 	de_version = (long)READ_ONCE(dentry->d_fsdata);  in afs_d_revalidate_rcu()
1046 			    struct dentry *dentry, unsigned int flags)  in afs_d_revalidate()  argument
1057 		return afs_d_revalidate_rcu(dir, dentry);  in afs_d_revalidate()
1059 	if (d_really_is_positive(dentry)) {  in afs_d_revalidate()
1060 		vnode = AFS_FS_I(d_inode(dentry));  in afs_d_revalidate()
1062 		       vnode->fid.vid, vnode->fid.vnode, dentry,  in afs_d_revalidate()
1065 		_enter("{neg n=%pd}", dentry);  in afs_d_revalidate()
1068 	key = afs_request_key(AFS_FS_S(dentry->d_sb)->volume->cell);  in afs_d_revalidate()
1080 		_debug("%pd: parent dir deleted", dentry);  in afs_d_revalidate()
1090 	de_version = (long)dentry->d_fsdata;  in afs_d_revalidate()
1106 		if (d_really_is_negative(dentry))  in afs_d_revalidate()
1108 		inode = d_inode(dentry);  in afs_d_revalidate()
1111 			       dentry);  in afs_d_revalidate()
1121 			       dentry, fid.vnode,  in afs_d_revalidate()
1131 			       dentry, fid.unique,  in afs_d_revalidate()
1140 		_debug("%pd: dirent not found", dentry);  in afs_d_revalidate()
1141 		if (d_really_is_positive(dentry))  in afs_d_revalidate()
1146 		_debug("failed to iterate parent %pd2: %d", dentry, ret);  in afs_d_revalidate()
1151 	dentry->d_fsdata = (void *)(unsigned long)dir_version;  in afs_d_revalidate()
1158 	_debug("dropping dentry %pd2", dentry);  in afs_d_revalidate()
1171 static int afs_d_delete(const struct dentry *dentry)  in afs_d_delete()  argument
1173 	_enter("%pd", dentry);  in afs_d_delete()
1175 	if (dentry->d_flags & DCACHE_NFSFS_RENAMED)  in afs_d_delete()
1178 	if (d_really_is_positive(dentry) &&  in afs_d_delete()
1179 	    (test_bit(AFS_VNODE_DELETED,   &AFS_FS_I(d_inode(dentry))->flags) ||  in afs_d_delete()
1180 	     test_bit(AFS_VNODE_PSEUDODIR, &AFS_FS_I(d_inode(dentry))->flags)))  in afs_d_delete()
1194 static void afs_d_iput(struct dentry *dentry, struct inode *inode)  in afs_d_iput()  argument
1196 	if (dentry->d_flags & DCACHE_NFSFS_RENAMED)  in afs_d_iput()
1197 		afs_silly_iput(dentry, inode);  in afs_d_iput()
1204 void afs_d_release(struct dentry *dentry)  in afs_d_release()  argument
1206 	_enter("%pd", dentry);  in afs_d_release()
1252 	d_instantiate(op->dentry, inode);  in afs_vnode_new_inode()
1260 	afs_update_dentry_version(op, &op->file[0], op->dentry);  in afs_create_success()
1277 		afs_edit_dir_add(dvnode, &op->dentry->d_name, &vp->fid,  in afs_create_edit_dir()
1288 		d_drop(op->dentry);  in afs_create_put()
1303 static struct dentry *afs_mkdir(struct mnt_idmap *idmap, struct inode *dir,  in afs_mkdir()
1304 				struct dentry *dentry, umode_t mode)  in afs_mkdir()  argument
1311 	       dvnode->fid.vid, dvnode->fid.vnode, dentry, mode);  in afs_mkdir()
1315 		d_drop(dentry);  in afs_mkdir()
1325 	op->dentry	= dentry;  in afs_mkdir()
1338 static void afs_dir_remove_subdir(struct dentry *dentry)  in afs_dir_remove_subdir()  argument
1340 	if (d_really_is_positive(dentry)) {  in afs_dir_remove_subdir()
1341 		struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry));  in afs_dir_remove_subdir()
1355 	afs_update_dentry_version(op, &op->file[0], op->dentry);  in afs_rmdir_success()
1365 	afs_dir_remove_subdir(op->dentry);  in afs_rmdir_edit_dir()
1371 		afs_edit_dir_remove(dvnode, &op->dentry->d_name,  in afs_rmdir_edit_dir()
1396 static int afs_rmdir(struct inode *dir, struct dentry *dentry)  in afs_rmdir()  argument
1403 	       dvnode->fid.vid, dvnode->fid.vnode, dentry);  in afs_rmdir()
1416 	op->dentry	= dentry;  in afs_rmdir()
1420 	if (d_really_is_positive(dentry)) {  in afs_rmdir()
1421 		vnode = AFS_FS_I(d_inode(dentry));  in afs_rmdir()
1462 	struct dentry *dentry = op->dentry;  in afs_dir_remove_link()  local
1468 	if (d_really_is_positive(dentry))  in afs_dir_remove_link()
1502 	afs_update_dentry_version(op, &op->file[0], op->dentry);  in afs_unlink_success()
1517 		afs_edit_dir_remove(dvnode, &op->dentry->d_name,  in afs_unlink_edit_dir()
1527 		d_rehash(op->dentry);  in afs_unlink_put()
1542 static int afs_unlink(struct inode *dir, struct dentry *dentry)  in afs_unlink()  argument
1546 	struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry));  in afs_unlink()
1550 	       dvnode->fid.vid, dvnode->fid.vnode, dentry);  in afs_unlink()
1552 	if (dentry->d_name.len >= AFSNAMEMAX)  in afs_unlink()
1573 	spin_lock(&dentry->d_lock);  in afs_unlink()
1574 	if (d_count(dentry) > 1) {  in afs_unlink()
1575 		spin_unlock(&dentry->d_lock);  in afs_unlink()
1577 		write_inode_now(d_inode(dentry), 0);  in afs_unlink()
1578 		afs_op_set_error(op, afs_sillyrename(dvnode, vnode, dentry, op->key));  in afs_unlink()
1581 	if (!d_unhashed(dentry)) {  in afs_unlink()
1583 		__d_drop(dentry);  in afs_unlink()
1586 	spin_unlock(&dentry->d_lock);  in afs_unlink()
1591 	op->dentry	= dentry;  in afs_unlink()
1626 		      struct dentry *dentry, umode_t mode, bool excl)  in afs_create()  argument
1633 	       dvnode->fid.vid, dvnode->fid.vnode, dentry, mode);  in afs_create()
1635 	if (dentry->d_name.len >= AFSNAMEMAX)  in afs_create()
1651 	op->dentry	= dentry;  in afs_create()
1661 	d_drop(dentry);  in afs_create()
1675 	afs_update_dentry_version(op, dvp, op->dentry);  in afs_link_success()
1676 	if (op->dentry_2->d_parent == op->dentry->d_parent)  in afs_link_success()
1679 	d_instantiate(op->dentry, &vp->vnode->netfs.inode);  in afs_link_success()
1686 		d_drop(op->dentry);  in afs_link_put()
1701 static int afs_link(struct dentry *from, struct inode *dir,  in afs_link()
1702 		    struct dentry *dentry)  in afs_link()  argument
1712 	       dentry);  in afs_link()
1714 	if (dentry->d_name.len >= AFSNAMEMAX)  in afs_link()
1736 	op->dentry		= dentry;  in afs_link()
1748 	d_drop(dentry);  in afs_link()
1773 		       struct dentry *dentry, const char *content)  in afs_symlink()  argument
1782 	       dvnode->fid.vid, dvnode->fid.vnode, dentry,  in afs_symlink()
1786 	if (dentry->d_name.len >= AFSNAMEMAX)  in afs_symlink()
1812 	op->dentry		= dentry;  in afs_symlink()
1822 	d_drop(dentry);  in afs_symlink()
1885 	struct afs_vnode *vnode = AFS_FS_I(d_inode(op->dentry));  in afs_rename_edit_dir()
1886 	struct dentry *old_dentry = op->dentry;  in afs_rename_edit_dir()
1887 	struct dentry *new_dentry = op->dentry_2;  in afs_rename_edit_dir()
1941 	afs_update_dentry_version(op, new_dvp, op->dentry);  in afs_rename_edit_dir()
1960 	struct dentry *old_dentry = op->dentry;  in afs_rename_exchange_edit_dir()
1961 	struct dentry *new_dentry = op->dentry_2;  in afs_rename_exchange_edit_dir()
2020 		d_rehash(op->dentry);  in afs_rename_put()
2061 		      struct dentry *old_dentry, struct inode *new_dir,  in afs_rename()
2062 		      struct dentry *new_dentry, unsigned int flags)  in afs_rename()
2119 	op->dentry		= old_dentry;  in afs_rename()