[linux.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);

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

	memset(&iattr, 0, sizeof iattr);
	iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
	iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
	__orangefs_setattr(dir, &iattr);
	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);

		memset(&iattr, 0, sizeof iattr);
		iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
		iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
		__orangefs_setattr(dir, &iattr);
	}
	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 = 0755;
	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);

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

	memset(&iattr, 0, sizeof iattr);
	iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
	iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
	__orangefs_setattr(dir, &iattr);
	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);

	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.
	 */
	memset(&iattr, 0, sizeof iattr);
	iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
	iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
	__orangefs_setattr(dir, &iattr);
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;
	struct iattr iattr;
	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));

	memset(&iattr, 0, sizeof iattr);
	iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
	iattr.ia_mtime = iattr.ia_ctime = current_time(new_dir);
	__orangefs_setattr(new_dir, &iattr);

	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
b2441318	1	// SPDX-License-Identifier: GPL-2.0
274dcf55 MM	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"
575e9461	13	#include "orangefs-kernel.h"
274dcf55 MM	14
	15	/*
	16	* Get a newly allocated inode to go with a negative dentry.
	17	*/
8bb8aefd	18	static int orangefs_create(struct inode *dir,
274dcf55 MM	19	struct dentry *dentry,
	20	umode_t mode,
	21	bool exclusive)
	22	{
8bb8aefd YL	23	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	24	struct orangefs_kernel_op_s *new_op;
db0267e7	25	struct orangefs_object_kref ref;
274dcf55	26	struct inode *inode;
a55f2d86	27	struct iattr iattr;
274dcf55 MM	28	int ret;
274dcf55 MM	29
f66debf1	30	gossip_debug(GOSSIP_NAME_DEBUG, "%s: %pd\n",
5253487e	31	__func__,
f66debf1	32	dentry);
274dcf55	33
8bb8aefd	34	new_op = op_alloc(ORANGEFS_VFS_OP_CREATE);
274dcf55 MM	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,
8bb8aefd	41	ORANGEFS_TYPE_METAFILE, mode);
274dcf55 MM	42
274dcf55 MM	43	strncpy(new_op->upcall.req.create.d_name,
6bdfb48d	44	dentry->d_name.name, ORANGEFS_NAME_MAX - 1);
274dcf55 MM	45
	46	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	47
	48	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	49	"%s: %pd: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
5253487e	50	__func__,
f66debf1	51	dentry,
274dcf55	52	&new_op->downcall.resp.create.refn.khandle,
5253487e MM	53	new_op->downcall.resp.create.refn.fs_id,
	54	new_op,
	55	ret);
274dcf55	56
5253487e	57	if (ret < 0)
274dcf55	58	goto out;
274dcf55	59
db0267e7	60	ref = new_op->downcall.resp.create.refn;
db0267e7 MB	61
db0267e7 MB	62	inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG \| mode, 0, &ref);
274dcf55	63	if (IS_ERR(inode)) {
f66debf1	64	gossip_err("%s: Failed to allocate inode for file :%pd:\n",
5253487e	65	__func__,
f66debf1	66	dentry);
274dcf55 MM	67	ret = PTR_ERR(inode);
	68	goto out;
	69	}
	70
	71	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	72	"%s: Assigned inode :%pU: for file :%pd:\n",
5253487e MM	73	__func__,
5253487e MM	74	get_khandle_from_ino(inode),
f66debf1	75	dentry);
274dcf55	76
1e2e547a	77	d_instantiate_new(dentry, inode);
804b1737	78	orangefs_set_timeout(dentry);
274dcf55 MM	79
274dcf55 MM	80	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	81	"%s: dentry instantiated for %pd\n",
5253487e	82	__func__,
f66debf1	83	dentry);
274dcf55	84
a55f2d86	85	memset(&iattr, 0, sizeof iattr);
afd9fb2a MB	86	iattr.ia_valid \|= ATTR_MTIME \| ATTR_CTIME;
	87	iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
	88	__orangefs_setattr(dir, &iattr);
274dcf55 MM	89	ret = 0;
274dcf55 MM	90	out:
34e6148a	91	op_release(new_op);
5253487e	92	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	93	"%s: %pd: returning %d\n",
5253487e	94	__func__,
f66debf1	95	dentry,
5253487e	96	ret);
274dcf55 MM	97	return ret;
	98	}
	99
	100	/*
	101	* Attempt to resolve an object name (dentry->d_name), parent handle, and
	102	* fsid into a handle for the object.
	103	*/
8bb8aefd	104	static struct dentry orangefs_lookup(struct inode dir, struct dentry *dentry,
274dcf55 MM	105	unsigned int flags)
274dcf55 MM	106	{
8bb8aefd YL	107	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	108	struct orangefs_kernel_op_s *new_op;
274dcf55	109	struct inode *inode;
274dcf55 MM	110	int ret = -EINVAL;
	111
	112	/*
	113	* in theory we could skip a lookup here (if the intent is to
	114	* create) in order to avoid a potentially failed lookup, but
	115	* leaving it in can skip a valid lookup and try to create a file
	116	* that already exists (e.g. the vfs already handles checking for
	117	* -EEXIST on O_EXCL opens, which is broken if we skip this lookup
	118	* in the create path)
	119	*/
f66debf1 AV	120	gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %pd\n",
f66debf1 AV	121	__func__, dentry);
274dcf55	122
47b4948f	123	if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1))
274dcf55 MM	124	return ERR_PTR(-ENAMETOOLONG);
274dcf55 MM	125
8bb8aefd	126	new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP);
274dcf55 MM	127	if (!new_op)
	128	return ERR_PTR(-ENOMEM);
	129
7cec28e9	130	new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW;
274dcf55 MM	131
	132	gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n",
	133	__FILE__,
	134	__func__,
	135	__LINE__,
	136	&parent->refn.khandle);
	137	new_op->upcall.req.lookup.parent_refn = parent->refn;
	138
	139	strncpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name,
6bdfb48d	140	ORANGEFS_NAME_MAX - 1);
274dcf55 MM	141
274dcf55 MM	142	gossip_debug(GOSSIP_NAME_DEBUG,
6ceaf781	143	"%s: doing lookup on %s under %pU,%d\n",
274dcf55 MM	144	__func__,
	145	new_op->upcall.req.lookup.d_name,
	146	&new_op->upcall.req.lookup.parent_refn.khandle,
6ceaf781	147	new_op->upcall.req.lookup.parent_refn.fs_id);
274dcf55 MM	148
	149	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	150
	151	gossip_debug(GOSSIP_NAME_DEBUG,
	152	"Lookup Got %pU, fsid %d (ret=%d)\n",
	153	&new_op->downcall.resp.lookup.refn.khandle,
	154	new_op->downcall.resp.lookup.refn.fs_id,
	155	ret);
	156
22fc9db2	157	if (ret == 0) {
04bb1ba1 AV	158	orangefs_set_timeout(dentry);
	159	inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
	160	} else if (ret == -ENOENT) {
	161	inode = NULL;
	162	} else {
274dcf55	163	/* must be a non-recoverable error */
04bb1ba1	164	inode = ERR_PTR(ret);
274dcf55 MM	165	}
274dcf55 MM	166
274dcf55	167	op_release(new_op);
04bb1ba1	168	return d_splice_alias(inode, dentry);
274dcf55 MM	169	}
	170
	171	/* return 0 on success; non-zero otherwise */
8bb8aefd	172	static int orangefs_unlink(struct inode dir, struct dentry dentry)
274dcf55 MM	173	{
274dcf55 MM	174	struct inode *inode = dentry->d_inode;
8bb8aefd YL	175	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	176	struct orangefs_kernel_op_s *new_op;
a55f2d86	177	struct iattr iattr;
274dcf55 MM	178	int ret;
	179
	180	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	181	"%s: called on %pd\n"
274dcf55 MM	182	" (inode %pU): Parent is %pU \| fs_id %d\n",
274dcf55 MM	183	__func__,
f66debf1	184	dentry,
274dcf55 MM	185	get_khandle_from_ino(inode),
	186	&parent->refn.khandle,
	187	parent->refn.fs_id);
	188
8bb8aefd	189	new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE);
274dcf55 MM	190	if (!new_op)
	191	return -ENOMEM;
	192
	193	new_op->upcall.req.remove.parent_refn = parent->refn;
	194	strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name,
6bdfb48d	195	ORANGEFS_NAME_MAX - 1);
274dcf55	196
8bb8aefd	197	ret = service_operation(new_op, "orangefs_unlink",
274dcf55 MM	198	get_interruptible_flag(inode));
274dcf55 MM	199
5253487e MM	200	gossip_debug(GOSSIP_NAME_DEBUG,
	201	"%s: service_operation returned:%d:\n",
	202	__func__,
	203	ret);
	204
274dcf55 MM	205	op_release(new_op);
	206
	207	if (!ret) {
	208	drop_nlink(inode);
	209
a55f2d86	210	memset(&iattr, 0, sizeof iattr);
afd9fb2a MB	211	iattr.ia_valid \|= ATTR_MTIME \| ATTR_CTIME;
	212	iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
	213	__orangefs_setattr(dir, &iattr);
274dcf55 MM	214	}
	215	return ret;
	216	}
	217
8bb8aefd	218	static int orangefs_symlink(struct inode *dir,
274dcf55 MM	219	struct dentry *dentry,
	220	const char *symname)
	221	{
8bb8aefd YL	222	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	223	struct orangefs_kernel_op_s *new_op;
db0267e7	224	struct orangefs_object_kref ref;
274dcf55	225	struct inode *inode;
a55f2d86	226	struct iattr iattr;
c42293a9	227	int mode = 0755;
274dcf55 MM	228	int ret;
	229
	230	gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__);
	231
	232	if (!symname)
	233	return -EINVAL;
	234
c62da585 MB	235	if (strlen(symname)+1 > ORANGEFS_NAME_MAX)
	236	return -ENAMETOOLONG;
	237
8bb8aefd	238	new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK);
274dcf55 MM	239	if (!new_op)
	240	return -ENOMEM;
	241
	242	new_op->upcall.req.sym.parent_refn = parent->refn;
	243
	244	fill_default_sys_attrs(new_op->upcall.req.sym.attributes,
8bb8aefd	245	ORANGEFS_TYPE_SYMLINK,
274dcf55 MM	246	mode);
	247
	248	strncpy(new_op->upcall.req.sym.entry_name,
	249	dentry->d_name.name,
6bdfb48d XW	250	ORANGEFS_NAME_MAX - 1);
6bdfb48d XW	251	strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX - 1);
274dcf55 MM	252
	253	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	254
	255	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	256	"Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
274dcf55 MM	257	&new_op->downcall.resp.sym.refn.khandle,
	258	new_op->downcall.resp.sym.refn.fs_id, ret);
	259
	260	if (ret < 0) {
	261	gossip_debug(GOSSIP_NAME_DEBUG,
	262	"%s: failed with error code %d\n",
	263	__func__, ret);
	264	goto out;
	265	}
	266
db0267e7	267	ref = new_op->downcall.resp.sym.refn;
db0267e7 MB	268
db0267e7 MB	269	inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK \| mode, 0, &ref);
274dcf55 MM	270	if (IS_ERR(inode)) {
274dcf55 MM	271	gossip_err
8bb8aefd	272	("*** Failed to allocate orangefs symlink inode\n");
274dcf55 MM	273	ret = PTR_ERR(inode);
	274	goto out;
	275	}
f6a4b4c9 MB	276	/*
	277	* This is necessary because orangefs_inode_getattr will not
	278	* re-read symlink size as it is impossible for it to change.
	279	* Invalidating the cache does not help. orangefs_new_inode
	280	* does not set the correct size (it does not know symname).
	281	*/
	282	inode->i_size = strlen(symname);
274dcf55 MM	283
	284	gossip_debug(GOSSIP_NAME_DEBUG,
	285	"Assigned symlink inode new number of %pU\n",
	286	get_khandle_from_ino(inode));
	287
1e2e547a	288	d_instantiate_new(dentry, inode);
804b1737	289	orangefs_set_timeout(dentry);
274dcf55 MM	290
274dcf55 MM	291	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	292	"Inode (Symlink) %pU -> %pd\n",
274dcf55	293	get_khandle_from_ino(inode),
f66debf1	294	dentry);
274dcf55	295
a55f2d86	296	memset(&iattr, 0, sizeof iattr);
afd9fb2a MB	297	iattr.ia_valid \|= ATTR_MTIME \| ATTR_CTIME;
	298	iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
	299	__orangefs_setattr(dir, &iattr);
274dcf55 MM	300	ret = 0;
274dcf55 MM	301	out:
34e6148a	302	op_release(new_op);
274dcf55 MM	303	return ret;
	304	}
	305
8bb8aefd	306	static int orangefs_mkdir(struct inode dir, struct dentry dentry, umode_t mode)
274dcf55	307	{
8bb8aefd YL	308	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	309	struct orangefs_kernel_op_s *new_op;
db0267e7	310	struct orangefs_object_kref ref;
274dcf55	311	struct inode *inode;
a55f2d86	312	struct iattr iattr;
274dcf55 MM	313	int ret;
274dcf55 MM	314
8bb8aefd	315	new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR);
274dcf55 MM	316	if (!new_op)
	317	return -ENOMEM;
	318
	319	new_op->upcall.req.mkdir.parent_refn = parent->refn;
	320
	321	fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes,
8bb8aefd	322	ORANGEFS_TYPE_DIRECTORY, mode);
274dcf55 MM	323
274dcf55 MM	324	strncpy(new_op->upcall.req.mkdir.d_name,
6bdfb48d	325	dentry->d_name.name, ORANGEFS_NAME_MAX - 1);
274dcf55 MM	326
	327	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	328
	329	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	330	"Mkdir Got ORANGEFS handle %pU on fsid %d\n",
274dcf55 MM	331	&new_op->downcall.resp.mkdir.refn.khandle,
	332	new_op->downcall.resp.mkdir.refn.fs_id);
	333
	334	if (ret < 0) {
	335	gossip_debug(GOSSIP_NAME_DEBUG,
	336	"%s: failed with error code %d\n",
	337	__func__, ret);
	338	goto out;
	339	}
	340
db0267e7	341	ref = new_op->downcall.resp.mkdir.refn;
db0267e7 MB	342
db0267e7 MB	343	inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR \| mode, 0, &ref);
274dcf55	344	if (IS_ERR(inode)) {
8bb8aefd	345	gossip_err("*** Failed to allocate orangefs dir inode\n");
274dcf55 MM	346	ret = PTR_ERR(inode);
	347	goto out;
	348	}
	349
	350	gossip_debug(GOSSIP_NAME_DEBUG,
	351	"Assigned dir inode new number of %pU\n",
	352	get_khandle_from_ino(inode));
	353
1e2e547a	354	d_instantiate_new(dentry, inode);
804b1737	355	orangefs_set_timeout(dentry);
274dcf55 MM	356
274dcf55 MM	357	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	358	"Inode (Directory) %pU -> %pd\n",
274dcf55	359	get_khandle_from_ino(inode),
f66debf1	360	dentry);
274dcf55 MM	361
	362	/*
	363	* NOTE: we have no good way to keep nlink consistent for directories
	364	* across clients; keep constant at 1.
	365	*/
a55f2d86	366	memset(&iattr, 0, sizeof iattr);
afd9fb2a MB	367	iattr.ia_valid \|= ATTR_MTIME \| ATTR_CTIME;
	368	iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
	369	__orangefs_setattr(dir, &iattr);
274dcf55	370	out:
34e6148a	371	op_release(new_op);
274dcf55 MM	372	return ret;
	373	}
	374
8bb8aefd	375	static int orangefs_rename(struct inode *old_dir,
274dcf55 MM	376	struct dentry *old_dentry,
274dcf55 MM	377	struct inode *new_dir,
1cd66c93 MS	378	struct dentry *new_dentry,
1cd66c93 MS	379	unsigned int flags)
274dcf55	380	{
8bb8aefd	381	struct orangefs_kernel_op_s *new_op;
5e7f1d43	382	struct iattr iattr;
274dcf55 MM	383	int ret;
274dcf55 MM	384
1cd66c93 MS	385	if (flags)
	386	return -EINVAL;
	387
274dcf55	388	gossip_debug(GOSSIP_NAME_DEBUG,
96b0cffb AV	389	"orangefs_rename: called (%pd2 => %pd2) ct=%d\n",
96b0cffb AV	390	old_dentry, new_dentry, d_count(new_dentry));
274dcf55	391
5e7f1d43	392	memset(&iattr, 0, sizeof iattr);
afd9fb2a MB	393	iattr.ia_valid \|= ATTR_MTIME \| ATTR_CTIME;
	394	iattr.ia_mtime = iattr.ia_ctime = current_time(new_dir);
	395	__orangefs_setattr(new_dir, &iattr);
71680c18	396
8bb8aefd	397	new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
274dcf55 MM	398	if (!new_op)
	399	return -EINVAL;
	400
8bb8aefd YL	401	new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn;
8bb8aefd YL	402	new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn;
274dcf55 MM	403
	404	strncpy(new_op->upcall.req.rename.d_old_name,
	405	old_dentry->d_name.name,
6bdfb48d	406	ORANGEFS_NAME_MAX - 1);
274dcf55 MM	407	strncpy(new_op->upcall.req.rename.d_new_name,
274dcf55 MM	408	new_dentry->d_name.name,
6bdfb48d	409	ORANGEFS_NAME_MAX - 1);
274dcf55 MM	410
274dcf55 MM	411	ret = service_operation(new_op,
8bb8aefd	412	"orangefs_rename",
274dcf55 MM	413	get_interruptible_flag(old_dentry->d_inode));
	414
	415	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	416	"orangefs_rename: got downcall status %d\n",
274dcf55 MM	417	ret);
	418
	419	if (new_dentry->d_inode)
c2050a45	420	new_dentry->d_inode->i_ctime = current_time(new_dentry->d_inode);
274dcf55 MM	421
	422	op_release(new_op);
	423	return ret;
	424	}
	425
8bb8aefd	426	/* ORANGEFS implementation of VFS inode operations for directories */
6f3fc107	427	const struct inode_operations orangefs_dir_inode_operations = {
8bb8aefd YL	428	.lookup = orangefs_lookup,
	429	.get_acl = orangefs_get_acl,
	430	.set_acl = orangefs_set_acl,
	431	.create = orangefs_create,
	432	.unlink = orangefs_unlink,
	433	.symlink = orangefs_symlink,
	434	.mkdir = orangefs_mkdir,
	435	.rmdir = orangefs_unlink,
	436	.rename = orangefs_rename,
	437	.setattr = orangefs_setattr,
	438	.getattr = orangefs_getattr,
8bb8aefd	439	.listxattr = orangefs_listxattr,
933287da	440	.permission = orangefs_permission,
a55f2d86	441	.update_time = orangefs_update_time,
274dcf55	442	};