[linux-2.6-block.git] / fs / orangefs / namei.c

// SPDX-License-Identifier: GPL-2.0
/*
 * (C) 2001 Clemson University and The University of Chicago
 *
 * See COPYING in top-level directory.
 */

/*
 *  Linux VFS namei operations.
 */

#include "protocol.h"
#include "orangefs-kernel.h"

/*
 * Get a newly allocated inode to go with a negative dentry.
 */
static int orangefs_create(struct inode *dir,
			struct dentry *dentry,
			umode_t mode,
			bool exclusive)
{
	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
	struct orangefs_kernel_op_s *new_op;
	struct orangefs_object_kref ref;
	struct inode *inode;
	struct iattr iattr;
	int ret;

	gossip_debug(GOSSIP_NAME_DEBUG, "%s: %pd\n",
		     __func__,
		     dentry);

	new_op = op_alloc(ORANGEFS_VFS_OP_CREATE);
	if (!new_op)
		return -ENOMEM;

	new_op->upcall.req.create.parent_refn = parent->refn;

	fill_default_sys_attrs(new_op->upcall.req.create.attributes,
			       ORANGEFS_TYPE_METAFILE, mode);

	strncpy(new_op->upcall.req.create.d_name,
		dentry->d_name.name, ORANGEFS_NAME_MAX - 1);

	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "%s: %pd: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
		     __func__,
		     dentry,
		     &new_op->downcall.resp.create.refn.khandle,
		     new_op->downcall.resp.create.refn.fs_id,
		     new_op,
		     ret);

	if (ret < 0)
		goto out;

	ref = new_op->downcall.resp.create.refn;

	inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG | mode, 0, &ref);
	if (IS_ERR(inode)) {
		gossip_err("%s: Failed to allocate inode for file :%pd:\n",
			   __func__,
			   dentry);
		ret = PTR_ERR(inode);
		goto out;
	}

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "%s: Assigned inode :%pU: for file :%pd:\n",
		     __func__,
		     get_khandle_from_ino(inode),
		     dentry);

	d_instantiate_new(dentry, inode);
	orangefs_set_timeout(dentry);
	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
	ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "%s: dentry instantiated for %pd\n",
		     __func__,
		     dentry);

	dir->i_mtime = dir->i_ctime = current_time(dir);
	memset(&iattr, 0, sizeof iattr);
	iattr.ia_valid |= ATTR_MTIME;
	orangefs_inode_setattr(dir, &iattr);
	mark_inode_dirty_sync(dir);
	ret = 0;
out:
	op_release(new_op);
	gossip_debug(GOSSIP_NAME_DEBUG,
		     "%s: %pd: returning %d\n",
		     __func__,
		     dentry,
		     ret);
	return ret;
}

/*
 * Attempt to resolve an object name (dentry->d_name), parent handle, and
 * fsid into a handle for the object.
 */
static struct dentry *orangefs_lookup(struct inode *dir, struct dentry *dentry,
				   unsigned int flags)
{
	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
	struct orangefs_kernel_op_s *new_op;
	struct inode *inode;
	int ret = -EINVAL;

	/*
	 * in theory we could skip a lookup here (if the intent is to
	 * create) in order to avoid a potentially failed lookup, but
	 * leaving it in can skip a valid lookup and try to create a file
	 * that already exists (e.g. the vfs already handles checking for
	 * -EEXIST on O_EXCL opens, which is broken if we skip this lookup
	 * in the create path)
	 */
	gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %pd\n",
		     __func__, dentry);

	if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1))
		return ERR_PTR(-ENAMETOOLONG);

	new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP);
	if (!new_op)
		return ERR_PTR(-ENOMEM);

	new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW;

	gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n",
		     __FILE__,
		     __func__,
		     __LINE__,
		     &parent->refn.khandle);
	new_op->upcall.req.lookup.parent_refn = parent->refn;

	strncpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name,
		ORANGEFS_NAME_MAX - 1);

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "%s: doing lookup on %s under %pU,%d\n",
		     __func__,
		     new_op->upcall.req.lookup.d_name,
		     &new_op->upcall.req.lookup.parent_refn.khandle,
		     new_op->upcall.req.lookup.parent_refn.fs_id);

	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "Lookup Got %pU, fsid %d (ret=%d)\n",
		     &new_op->downcall.resp.lookup.refn.khandle,
		     new_op->downcall.resp.lookup.refn.fs_id,
		     ret);

	if (ret == 0) {
		orangefs_set_timeout(dentry);
		inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
	} else if (ret == -ENOENT) {
		inode = NULL;
	} else {
		/* must be a non-recoverable error */
		inode = ERR_PTR(ret);
	}

	op_release(new_op);
	return d_splice_alias(inode, dentry);
}

/* return 0 on success; non-zero otherwise */
static int orangefs_unlink(struct inode *dir, struct dentry *dentry)
{
	struct inode *inode = dentry->d_inode;
	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
	struct orangefs_kernel_op_s *new_op;
	struct iattr iattr;
	int ret;

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "%s: called on %pd\n"
		     "  (inode %pU): Parent is %pU | fs_id %d\n",
		     __func__,
		     dentry,
		     get_khandle_from_ino(inode),
		     &parent->refn.khandle,
		     parent->refn.fs_id);

	new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE);
	if (!new_op)
		return -ENOMEM;

	new_op->upcall.req.remove.parent_refn = parent->refn;
	strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name,
		ORANGEFS_NAME_MAX - 1);

	ret = service_operation(new_op, "orangefs_unlink",
				get_interruptible_flag(inode));

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "%s: service_operation returned:%d:\n",
		     __func__,
		     ret);

	op_release(new_op);

	if (!ret) {
		drop_nlink(inode);

		dir->i_mtime = dir->i_ctime = current_time(dir);
		memset(&iattr, 0, sizeof iattr);
		iattr.ia_valid |= ATTR_MTIME;
		orangefs_inode_setattr(dir, &iattr);
		mark_inode_dirty_sync(dir);
	}
	return ret;
}

static int orangefs_symlink(struct inode *dir,
			 struct dentry *dentry,
			 const char *symname)
{
	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
	struct orangefs_kernel_op_s *new_op;
	struct orangefs_object_kref ref;
	struct inode *inode;
	struct iattr iattr;
	int mode = 755;
	int ret;

	gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__);

	if (!symname)
		return -EINVAL;

	if (strlen(symname)+1 > ORANGEFS_NAME_MAX)
		return -ENAMETOOLONG;

	new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK);
	if (!new_op)
		return -ENOMEM;

	new_op->upcall.req.sym.parent_refn = parent->refn;

	fill_default_sys_attrs(new_op->upcall.req.sym.attributes,
			       ORANGEFS_TYPE_SYMLINK,
			       mode);

	strncpy(new_op->upcall.req.sym.entry_name,
		dentry->d_name.name,
		ORANGEFS_NAME_MAX - 1);
	strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX - 1);

	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
		     &new_op->downcall.resp.sym.refn.khandle,
		     new_op->downcall.resp.sym.refn.fs_id, ret);

	if (ret < 0) {
		gossip_debug(GOSSIP_NAME_DEBUG,
			    "%s: failed with error code %d\n",
			    __func__, ret);
		goto out;
	}

	ref = new_op->downcall.resp.sym.refn;

	inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK | mode, 0, &ref);
	if (IS_ERR(inode)) {
		gossip_err
		    ("*** Failed to allocate orangefs symlink inode\n");
		ret = PTR_ERR(inode);
		goto out;
	}
	/*
	 * This is necessary because orangefs_inode_getattr will not
	 * re-read symlink size as it is impossible for it to change.
	 * Invalidating the cache does not help.  orangefs_new_inode
	 * does not set the correct size (it does not know symname).
	 */
	inode->i_size = strlen(symname);

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "Assigned symlink inode new number of %pU\n",
		     get_khandle_from_ino(inode));

	d_instantiate_new(dentry, inode);
	orangefs_set_timeout(dentry);
	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
	ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "Inode (Symlink) %pU -> %pd\n",
		     get_khandle_from_ino(inode),
		     dentry);

	dir->i_mtime = dir->i_ctime = current_time(dir);
	memset(&iattr, 0, sizeof iattr);
	iattr.ia_valid |= ATTR_MTIME;
	orangefs_inode_setattr(dir, &iattr);
	mark_inode_dirty_sync(dir);
	ret = 0;
out:
	op_release(new_op);
	return ret;
}

static int orangefs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
	struct orangefs_kernel_op_s *new_op;
	struct orangefs_object_kref ref;
	struct inode *inode;
	struct iattr iattr;
	int ret;

	new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR);
	if (!new_op)
		return -ENOMEM;

	new_op->upcall.req.mkdir.parent_refn = parent->refn;

	fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes,
			      ORANGEFS_TYPE_DIRECTORY, mode);

	strncpy(new_op->upcall.req.mkdir.d_name,
		dentry->d_name.name, ORANGEFS_NAME_MAX - 1);

	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "Mkdir Got ORANGEFS handle %pU on fsid %d\n",
		     &new_op->downcall.resp.mkdir.refn.khandle,
		     new_op->downcall.resp.mkdir.refn.fs_id);

	if (ret < 0) {
		gossip_debug(GOSSIP_NAME_DEBUG,
			     "%s: failed with error code %d\n",
			     __func__, ret);
		goto out;
	}

	ref = new_op->downcall.resp.mkdir.refn;

	inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR | mode, 0, &ref);
	if (IS_ERR(inode)) {
		gossip_err("*** Failed to allocate orangefs dir inode\n");
		ret = PTR_ERR(inode);
		goto out;
	}

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "Assigned dir inode new number of %pU\n",
		     get_khandle_from_ino(inode));

	d_instantiate_new(dentry, inode);
	orangefs_set_timeout(dentry);
	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
	ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "Inode (Directory) %pU -> %pd\n",
		     get_khandle_from_ino(inode),
		     dentry);

	/*
	 * NOTE: we have no good way to keep nlink consistent for directories
	 * across clients; keep constant at 1.
	 */
	dir->i_mtime = dir->i_ctime = current_time(dir);
	memset(&iattr, 0, sizeof iattr);
	iattr.ia_valid |= ATTR_MTIME;
	orangefs_inode_setattr(dir, &iattr);
	mark_inode_dirty_sync(dir);
out:
	op_release(new_op);
	return ret;
}

static int orangefs_rename(struct inode *old_dir,
			struct dentry *old_dentry,
			struct inode *new_dir,
			struct dentry *new_dentry,
			unsigned int flags)
{
	struct orangefs_kernel_op_s *new_op;
	int ret;

	if (flags)
		return -EINVAL;

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "orangefs_rename: called (%pd2 => %pd2) ct=%d\n",
		     old_dentry, new_dentry, d_count(new_dentry));

	ORANGEFS_I(new_dentry->d_parent->d_inode)->getattr_time = jiffies - 1;

	new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
	if (!new_op)
		return -EINVAL;

	new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn;
	new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn;

	strncpy(new_op->upcall.req.rename.d_old_name,
		old_dentry->d_name.name,
		ORANGEFS_NAME_MAX - 1);
	strncpy(new_op->upcall.req.rename.d_new_name,
		new_dentry->d_name.name,
		ORANGEFS_NAME_MAX - 1);

	ret = service_operation(new_op,
				"orangefs_rename",
				get_interruptible_flag(old_dentry->d_inode));

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "orangefs_rename: got downcall status %d\n",
		     ret);

	if (new_dentry->d_inode)
		new_dentry->d_inode->i_ctime = current_time(new_dentry->d_inode);

	op_release(new_op);
	return ret;
}

/* ORANGEFS implementation of VFS inode operations for directories */
const struct inode_operations orangefs_dir_inode_operations = {
	.lookup = orangefs_lookup,
	.get_acl = orangefs_get_acl,
	.set_acl = orangefs_set_acl,
	.create = orangefs_create,
	.unlink = orangefs_unlink,
	.symlink = orangefs_symlink,
	.mkdir = orangefs_mkdir,
	.rmdir = orangefs_unlink,
	.rename = orangefs_rename,
	.setattr = orangefs_setattr,
	.getattr = orangefs_getattr,
	.listxattr = orangefs_listxattr,
	.permission = orangefs_permission,
	.update_time = orangefs_update_time,
};
Commit	Line	Data
	1	// SPDX-License-Identifier: GPL-2.0
	2	/*
	3	* (C) 2001 Clemson University and The University of Chicago
	4	*
	5	* See COPYING in top-level directory.
	6	*/
	7
	8	/*
	9	* Linux VFS namei operations.
	10	*/
	11
	12	#include "protocol.h"
	13	#include "orangefs-kernel.h"
	14
	15	/*
	16	* Get a newly allocated inode to go with a negative dentry.
	17	*/
	18	static int orangefs_create(struct inode *dir,
	19	struct dentry *dentry,
	20	umode_t mode,
	21	bool exclusive)
	22	{
	23	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
	24	struct orangefs_kernel_op_s *new_op;
	25	struct orangefs_object_kref ref;
	26	struct inode *inode;
	27	struct iattr iattr;
	28	int ret;
	29
	30	gossip_debug(GOSSIP_NAME_DEBUG, "%s: %pd\n",
	31	__func__,
	32	dentry);
	33
	34	new_op = op_alloc(ORANGEFS_VFS_OP_CREATE);
	35	if (!new_op)
	36	return -ENOMEM;
	37
	38	new_op->upcall.req.create.parent_refn = parent->refn;
	39
	40	fill_default_sys_attrs(new_op->upcall.req.create.attributes,
	41	ORANGEFS_TYPE_METAFILE, mode);
	42
	43	strncpy(new_op->upcall.req.create.d_name,
	44	dentry->d_name.name, ORANGEFS_NAME_MAX - 1);
	45
	46	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	47
	48	gossip_debug(GOSSIP_NAME_DEBUG,
	49	"%s: %pd: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
	50	__func__,
	51	dentry,
	52	&new_op->downcall.resp.create.refn.khandle,
	53	new_op->downcall.resp.create.refn.fs_id,
	54	new_op,
	55	ret);
	56
	57	if (ret < 0)
	58	goto out;
	59
	60	ref = new_op->downcall.resp.create.refn;
	61
	62	inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG \| mode, 0, &ref);
	63	if (IS_ERR(inode)) {
	64	gossip_err("%s: Failed to allocate inode for file :%pd:\n",
	65	__func__,
	66	dentry);
	67	ret = PTR_ERR(inode);
	68	goto out;
	69	}
	70
	71	gossip_debug(GOSSIP_NAME_DEBUG,
	72	"%s: Assigned inode :%pU: for file :%pd:\n",
	73	__func__,
	74	get_khandle_from_ino(inode),
	75	dentry);
	76
	77	d_instantiate_new(dentry, inode);
	78	orangefs_set_timeout(dentry);
	79	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
	80	ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
	81
	82	gossip_debug(GOSSIP_NAME_DEBUG,
	83	"%s: dentry instantiated for %pd\n",
	84	__func__,
	85	dentry);
	86
	87	dir->i_mtime = dir->i_ctime = current_time(dir);
	88	memset(&iattr, 0, sizeof iattr);
	89	iattr.ia_valid \|= ATTR_MTIME;
	90	orangefs_inode_setattr(dir, &iattr);
	91	mark_inode_dirty_sync(dir);
	92	ret = 0;
	93	out:
	94	op_release(new_op);
	95	gossip_debug(GOSSIP_NAME_DEBUG,
	96	"%s: %pd: returning %d\n",
	97	__func__,
	98	dentry,
	99	ret);
	100	return ret;
	101	}
	102
	103	/*
	104	* Attempt to resolve an object name (dentry->d_name), parent handle, and
	105	* fsid into a handle for the object.
	106	*/
	107	static struct dentry orangefs_lookup(struct inode dir, struct dentry *dentry,
	108	unsigned int flags)
	109	{
	110	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
	111	struct orangefs_kernel_op_s *new_op;
	112	struct inode *inode;
	113	int ret = -EINVAL;
	114
	115	/*
	116	* in theory we could skip a lookup here (if the intent is to
	117	* create) in order to avoid a potentially failed lookup, but
	118	* leaving it in can skip a valid lookup and try to create a file
	119	* that already exists (e.g. the vfs already handles checking for
	120	* -EEXIST on O_EXCL opens, which is broken if we skip this lookup
	121	* in the create path)
	122	*/
	123	gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %pd\n",
	124	__func__, dentry);
	125
	126	if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1))
	127	return ERR_PTR(-ENAMETOOLONG);
	128
	129	new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP);
	130	if (!new_op)
	131	return ERR_PTR(-ENOMEM);
	132
	133	new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW;
	134
	135	gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n",
	136	__FILE__,
	137	__func__,
	138	__LINE__,
	139	&parent->refn.khandle);
	140	new_op->upcall.req.lookup.parent_refn = parent->refn;
	141
	142	strncpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name,
	143	ORANGEFS_NAME_MAX - 1);
	144
	145	gossip_debug(GOSSIP_NAME_DEBUG,
	146	"%s: doing lookup on %s under %pU,%d\n",
	147	__func__,
	148	new_op->upcall.req.lookup.d_name,
	149	&new_op->upcall.req.lookup.parent_refn.khandle,
	150	new_op->upcall.req.lookup.parent_refn.fs_id);
	151
	152	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	153
	154	gossip_debug(GOSSIP_NAME_DEBUG,
	155	"Lookup Got %pU, fsid %d (ret=%d)\n",
	156	&new_op->downcall.resp.lookup.refn.khandle,
	157	new_op->downcall.resp.lookup.refn.fs_id,
	158	ret);
	159
	160	if (ret == 0) {
	161	orangefs_set_timeout(dentry);
	162	inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
	163	} else if (ret == -ENOENT) {
	164	inode = NULL;
	165	} else {
	166	/* must be a non-recoverable error */
	167	inode = ERR_PTR(ret);
	168	}
	169
	170	op_release(new_op);
	171	return d_splice_alias(inode, dentry);
	172	}
	173
	174	/* return 0 on success; non-zero otherwise */
	175	static int orangefs_unlink(struct inode dir, struct dentry dentry)
	176	{
	177	struct inode *inode = dentry->d_inode;
	178	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
	179	struct orangefs_kernel_op_s *new_op;
	180	struct iattr iattr;
	181	int ret;
	182
	183	gossip_debug(GOSSIP_NAME_DEBUG,
	184	"%s: called on %pd\n"
	185	" (inode %pU): Parent is %pU \| fs_id %d\n",
	186	__func__,
	187	dentry,
	188	get_khandle_from_ino(inode),
	189	&parent->refn.khandle,
	190	parent->refn.fs_id);
	191
	192	new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE);
	193	if (!new_op)
	194	return -ENOMEM;
	195
	196	new_op->upcall.req.remove.parent_refn = parent->refn;
	197	strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name,
	198	ORANGEFS_NAME_MAX - 1);
	199
	200	ret = service_operation(new_op, "orangefs_unlink",
	201	get_interruptible_flag(inode));
	202
	203	gossip_debug(GOSSIP_NAME_DEBUG,
	204	"%s: service_operation returned:%d:\n",
	205	__func__,
	206	ret);
	207
	208	op_release(new_op);
	209
	210	if (!ret) {
	211	drop_nlink(inode);
	212
	213	dir->i_mtime = dir->i_ctime = current_time(dir);
	214	memset(&iattr, 0, sizeof iattr);
	215	iattr.ia_valid \|= ATTR_MTIME;
	216	orangefs_inode_setattr(dir, &iattr);
	217	mark_inode_dirty_sync(dir);
	218	}
	219	return ret;
	220	}
	221
	222	static int orangefs_symlink(struct inode *dir,
	223	struct dentry *dentry,
	224	const char *symname)
	225	{
	226	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
	227	struct orangefs_kernel_op_s *new_op;
	228	struct orangefs_object_kref ref;
	229	struct inode *inode;
	230	struct iattr iattr;
	231	int mode = 755;
	232	int ret;
	233
	234	gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__);
	235
	236	if (!symname)
	237	return -EINVAL;
	238
	239	if (strlen(symname)+1 > ORANGEFS_NAME_MAX)
	240	return -ENAMETOOLONG;
	241
	242	new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK);
	243	if (!new_op)
	244	return -ENOMEM;
	245
	246	new_op->upcall.req.sym.parent_refn = parent->refn;
	247
	248	fill_default_sys_attrs(new_op->upcall.req.sym.attributes,
	249	ORANGEFS_TYPE_SYMLINK,
	250	mode);
	251
	252	strncpy(new_op->upcall.req.sym.entry_name,
	253	dentry->d_name.name,
	254	ORANGEFS_NAME_MAX - 1);
	255	strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX - 1);
	256
	257	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	258
	259	gossip_debug(GOSSIP_NAME_DEBUG,
	260	"Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
	261	&new_op->downcall.resp.sym.refn.khandle,
	262	new_op->downcall.resp.sym.refn.fs_id, ret);
	263
	264	if (ret < 0) {
	265	gossip_debug(GOSSIP_NAME_DEBUG,
	266	"%s: failed with error code %d\n",
	267	__func__, ret);
	268	goto out;
	269	}
	270
	271	ref = new_op->downcall.resp.sym.refn;
	272
	273	inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK \| mode, 0, &ref);
	274	if (IS_ERR(inode)) {
	275	gossip_err
	276	("*** Failed to allocate orangefs symlink inode\n");
	277	ret = PTR_ERR(inode);
	278	goto out;
	279	}
	280	/*
	281	* This is necessary because orangefs_inode_getattr will not
	282	* re-read symlink size as it is impossible for it to change.
	283	* Invalidating the cache does not help. orangefs_new_inode
	284	* does not set the correct size (it does not know symname).
	285	*/
	286	inode->i_size = strlen(symname);
	287
	288	gossip_debug(GOSSIP_NAME_DEBUG,
	289	"Assigned symlink inode new number of %pU\n",
	290	get_khandle_from_ino(inode));
	291
	292	d_instantiate_new(dentry, inode);
	293	orangefs_set_timeout(dentry);
	294	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
	295	ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
	296
	297	gossip_debug(GOSSIP_NAME_DEBUG,
	298	"Inode (Symlink) %pU -> %pd\n",
	299	get_khandle_from_ino(inode),
	300	dentry);
	301
	302	dir->i_mtime = dir->i_ctime = current_time(dir);
	303	memset(&iattr, 0, sizeof iattr);
	304	iattr.ia_valid \|= ATTR_MTIME;
	305	orangefs_inode_setattr(dir, &iattr);
	306	mark_inode_dirty_sync(dir);
	307	ret = 0;
	308	out:
	309	op_release(new_op);
	310	return ret;
	311	}
	312
	313	static int orangefs_mkdir(struct inode dir, struct dentry dentry, umode_t mode)
	314	{
	315	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
	316	struct orangefs_kernel_op_s *new_op;
	317	struct orangefs_object_kref ref;
	318	struct inode *inode;
	319	struct iattr iattr;
	320	int ret;
	321
	322	new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR);
	323	if (!new_op)
	324	return -ENOMEM;
	325
	326	new_op->upcall.req.mkdir.parent_refn = parent->refn;
	327
	328	fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes,
	329	ORANGEFS_TYPE_DIRECTORY, mode);
	330
	331	strncpy(new_op->upcall.req.mkdir.d_name,
	332	dentry->d_name.name, ORANGEFS_NAME_MAX - 1);
	333
	334	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	335
	336	gossip_debug(GOSSIP_NAME_DEBUG,
	337	"Mkdir Got ORANGEFS handle %pU on fsid %d\n",
	338	&new_op->downcall.resp.mkdir.refn.khandle,
	339	new_op->downcall.resp.mkdir.refn.fs_id);
	340
	341	if (ret < 0) {
	342	gossip_debug(GOSSIP_NAME_DEBUG,
	343	"%s: failed with error code %d\n",
	344	__func__, ret);
	345	goto out;
	346	}
	347
	348	ref = new_op->downcall.resp.mkdir.refn;
	349
	350	inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR \| mode, 0, &ref);
	351	if (IS_ERR(inode)) {
	352	gossip_err("*** Failed to allocate orangefs dir inode\n");
	353	ret = PTR_ERR(inode);
	354	goto out;
	355	}
	356
	357	gossip_debug(GOSSIP_NAME_DEBUG,
	358	"Assigned dir inode new number of %pU\n",
	359	get_khandle_from_ino(inode));
	360
	361	d_instantiate_new(dentry, inode);
	362	orangefs_set_timeout(dentry);
	363	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
	364	ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
	365
	366	gossip_debug(GOSSIP_NAME_DEBUG,
	367	"Inode (Directory) %pU -> %pd\n",
	368	get_khandle_from_ino(inode),
	369	dentry);
	370
	371	/*
	372	* NOTE: we have no good way to keep nlink consistent for directories
	373	* across clients; keep constant at 1.
	374	*/
	375	dir->i_mtime = dir->i_ctime = current_time(dir);
	376	memset(&iattr, 0, sizeof iattr);
	377	iattr.ia_valid \|= ATTR_MTIME;
	378	orangefs_inode_setattr(dir, &iattr);
	379	mark_inode_dirty_sync(dir);
	380	out:
	381	op_release(new_op);
	382	return ret;
	383	}
	384
	385	static int orangefs_rename(struct inode *old_dir,
	386	struct dentry *old_dentry,
	387	struct inode *new_dir,
	388	struct dentry *new_dentry,
	389	unsigned int flags)
	390	{
	391	struct orangefs_kernel_op_s *new_op;
	392	int ret;
	393
	394	if (flags)
	395	return -EINVAL;
	396
	397	gossip_debug(GOSSIP_NAME_DEBUG,
	398	"orangefs_rename: called (%pd2 => %pd2) ct=%d\n",
	399	old_dentry, new_dentry, d_count(new_dentry));
	400
	401	ORANGEFS_I(new_dentry->d_parent->d_inode)->getattr_time = jiffies - 1;
	402
	403	new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
	404	if (!new_op)
	405	return -EINVAL;
	406
	407	new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn;
	408	new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn;
	409
	410	strncpy(new_op->upcall.req.rename.d_old_name,
	411	old_dentry->d_name.name,
	412	ORANGEFS_NAME_MAX - 1);
	413	strncpy(new_op->upcall.req.rename.d_new_name,
	414	new_dentry->d_name.name,
	415	ORANGEFS_NAME_MAX - 1);
	416
	417	ret = service_operation(new_op,
	418	"orangefs_rename",
	419	get_interruptible_flag(old_dentry->d_inode));
	420
	421	gossip_debug(GOSSIP_NAME_DEBUG,
	422	"orangefs_rename: got downcall status %d\n",
	423	ret);
	424
	425	if (new_dentry->d_inode)
	426	new_dentry->d_inode->i_ctime = current_time(new_dentry->d_inode);
	427
	428	op_release(new_op);
	429	return ret;
	430	}
	431
	432	/* ORANGEFS implementation of VFS inode operations for directories */
	433	const struct inode_operations orangefs_dir_inode_operations = {
	434	.lookup = orangefs_lookup,
	435	.get_acl = orangefs_get_acl,
	436	.set_acl = orangefs_set_acl,
	437	.create = orangefs_create,
	438	.unlink = orangefs_unlink,
	439	.symlink = orangefs_symlink,
	440	.mkdir = orangefs_mkdir,
	441	.rmdir = orangefs_unlink,
	442	.rename = orangefs_rename,
	443	.setattr = orangefs_setattr,
	444	.getattr = orangefs_getattr,
	445	.listxattr = orangefs_listxattr,
	446	.permission = orangefs_permission,
	447	.update_time = orangefs_update_time,
	448	};