[linux-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 mnt_idmap *idmap,
			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 mnt_idmap *idmap,
		         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 mnt_idmap *idmap, 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 mnt_idmap *idmap,
			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_inode_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	*/
6c960e68	18	static int orangefs_create(struct mnt_idmap *idmap,
549c7297	19	struct inode *dir,
274dcf55 MM	20	struct dentry *dentry,
	21	umode_t mode,
	22	bool exclusive)
	23	{
8bb8aefd YL	24	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	25	struct orangefs_kernel_op_s *new_op;
db0267e7	26	struct orangefs_object_kref ref;
274dcf55	27	struct inode *inode;
a55f2d86	28	struct iattr iattr;
274dcf55 MM	29	int ret;
274dcf55 MM	30
f66debf1	31	gossip_debug(GOSSIP_NAME_DEBUG, "%s: %pd\n",
5253487e	32	__func__,
f66debf1	33	dentry);
274dcf55	34
8bb8aefd	35	new_op = op_alloc(ORANGEFS_VFS_OP_CREATE);
274dcf55 MM	36	if (!new_op)
	37	return -ENOMEM;
	38
	39	new_op->upcall.req.create.parent_refn = parent->refn;
	40
	41	fill_default_sys_attrs(new_op->upcall.req.create.attributes,
8bb8aefd	42	ORANGEFS_TYPE_METAFILE, mode);
274dcf55 MM	43
274dcf55 MM	44	strncpy(new_op->upcall.req.create.d_name,
6bdfb48d	45	dentry->d_name.name, ORANGEFS_NAME_MAX - 1);
274dcf55 MM	46
	47	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	48
	49	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	50	"%s: %pd: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
5253487e	51	__func__,
f66debf1	52	dentry,
274dcf55	53	&new_op->downcall.resp.create.refn.khandle,
5253487e MM	54	new_op->downcall.resp.create.refn.fs_id,
	55	new_op,
	56	ret);
274dcf55	57
5253487e	58	if (ret < 0)
274dcf55	59	goto out;
274dcf55	60
db0267e7	61	ref = new_op->downcall.resp.create.refn;
db0267e7 MB	62
db0267e7 MB	63	inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG \| mode, 0, &ref);
274dcf55	64	if (IS_ERR(inode)) {
f66debf1	65	gossip_err("%s: Failed to allocate inode for file :%pd:\n",
5253487e	66	__func__,
f66debf1	67	dentry);
274dcf55 MM	68	ret = PTR_ERR(inode);
	69	goto out;
	70	}
	71
	72	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	73	"%s: Assigned inode :%pU: for file :%pd:\n",
5253487e MM	74	__func__,
5253487e MM	75	get_khandle_from_ino(inode),
f66debf1	76	dentry);
274dcf55	77
1e2e547a	78	d_instantiate_new(dentry, inode);
804b1737	79	orangefs_set_timeout(dentry);
274dcf55 MM	80
274dcf55 MM	81	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	82	"%s: dentry instantiated for %pd\n",
5253487e	83	__func__,
f66debf1	84	dentry);
274dcf55	85
a55f2d86	86	memset(&iattr, 0, sizeof iattr);
afd9fb2a MB	87	iattr.ia_valid \|= ATTR_MTIME \| ATTR_CTIME;
	88	iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
	89	__orangefs_setattr(dir, &iattr);
274dcf55 MM	90	ret = 0;
274dcf55 MM	91	out:
34e6148a	92	op_release(new_op);
5253487e	93	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	94	"%s: %pd: returning %d\n",
5253487e	95	__func__,
f66debf1	96	dentry,
5253487e	97	ret);
274dcf55 MM	98	return ret;
	99	}
	100
	101	/*
	102	* Attempt to resolve an object name (dentry->d_name), parent handle, and
	103	* fsid into a handle for the object.
	104	*/
8bb8aefd	105	static struct dentry orangefs_lookup(struct inode dir, struct dentry *dentry,
274dcf55 MM	106	unsigned int flags)
274dcf55 MM	107	{
8bb8aefd YL	108	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	109	struct orangefs_kernel_op_s *new_op;
274dcf55	110	struct inode *inode;
274dcf55 MM	111	int ret = -EINVAL;
	112
	113	/*
	114	* in theory we could skip a lookup here (if the intent is to
	115	* create) in order to avoid a potentially failed lookup, but
	116	* leaving it in can skip a valid lookup and try to create a file
	117	* that already exists (e.g. the vfs already handles checking for
	118	* -EEXIST on O_EXCL opens, which is broken if we skip this lookup
	119	* in the create path)
	120	*/
f66debf1 AV	121	gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %pd\n",
f66debf1 AV	122	__func__, dentry);
274dcf55	123
47b4948f	124	if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1))
274dcf55 MM	125	return ERR_PTR(-ENAMETOOLONG);
274dcf55 MM	126
8bb8aefd	127	new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP);
274dcf55 MM	128	if (!new_op)
	129	return ERR_PTR(-ENOMEM);
	130
7cec28e9	131	new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW;
274dcf55 MM	132
	133	gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n",
	134	__FILE__,
	135	__func__,
	136	__LINE__,
	137	&parent->refn.khandle);
	138	new_op->upcall.req.lookup.parent_refn = parent->refn;
	139
	140	strncpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name,
6bdfb48d	141	ORANGEFS_NAME_MAX - 1);
274dcf55 MM	142
274dcf55 MM	143	gossip_debug(GOSSIP_NAME_DEBUG,
6ceaf781	144	"%s: doing lookup on %s under %pU,%d\n",
274dcf55 MM	145	__func__,
	146	new_op->upcall.req.lookup.d_name,
	147	&new_op->upcall.req.lookup.parent_refn.khandle,
6ceaf781	148	new_op->upcall.req.lookup.parent_refn.fs_id);
274dcf55 MM	149
	150	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	151
	152	gossip_debug(GOSSIP_NAME_DEBUG,
	153	"Lookup Got %pU, fsid %d (ret=%d)\n",
	154	&new_op->downcall.resp.lookup.refn.khandle,
	155	new_op->downcall.resp.lookup.refn.fs_id,
	156	ret);
	157
22fc9db2	158	if (ret == 0) {
04bb1ba1 AV	159	orangefs_set_timeout(dentry);
	160	inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
	161	} else if (ret == -ENOENT) {
	162	inode = NULL;
	163	} else {
274dcf55	164	/* must be a non-recoverable error */
04bb1ba1	165	inode = ERR_PTR(ret);
274dcf55 MM	166	}
274dcf55 MM	167
274dcf55	168	op_release(new_op);
04bb1ba1	169	return d_splice_alias(inode, dentry);
274dcf55 MM	170	}
	171
	172	/* return 0 on success; non-zero otherwise */
8bb8aefd	173	static int orangefs_unlink(struct inode dir, struct dentry dentry)
274dcf55 MM	174	{
274dcf55 MM	175	struct inode *inode = dentry->d_inode;
8bb8aefd YL	176	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	177	struct orangefs_kernel_op_s *new_op;
a55f2d86	178	struct iattr iattr;
274dcf55 MM	179	int ret;
	180
	181	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	182	"%s: called on %pd\n"
274dcf55 MM	183	" (inode %pU): Parent is %pU \| fs_id %d\n",
274dcf55 MM	184	__func__,
f66debf1	185	dentry,
274dcf55 MM	186	get_khandle_from_ino(inode),
	187	&parent->refn.khandle,
	188	parent->refn.fs_id);
	189
8bb8aefd	190	new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE);
274dcf55 MM	191	if (!new_op)
	192	return -ENOMEM;
	193
	194	new_op->upcall.req.remove.parent_refn = parent->refn;
	195	strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name,
6bdfb48d	196	ORANGEFS_NAME_MAX - 1);
274dcf55	197
8bb8aefd	198	ret = service_operation(new_op, "orangefs_unlink",
274dcf55 MM	199	get_interruptible_flag(inode));
274dcf55 MM	200
5253487e MM	201	gossip_debug(GOSSIP_NAME_DEBUG,
	202	"%s: service_operation returned:%d:\n",
	203	__func__,
	204	ret);
	205
274dcf55 MM	206	op_release(new_op);
	207
	208	if (!ret) {
	209	drop_nlink(inode);
	210
a55f2d86	211	memset(&iattr, 0, sizeof iattr);
afd9fb2a MB	212	iattr.ia_valid \|= ATTR_MTIME \| ATTR_CTIME;
	213	iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
	214	__orangefs_setattr(dir, &iattr);
274dcf55 MM	215	}
	216	return ret;
	217	}
	218
7a77db95	219	static int orangefs_symlink(struct mnt_idmap *idmap,
549c7297	220	struct inode *dir,
274dcf55 MM	221	struct dentry *dentry,
	222	const char *symname)
	223	{
8bb8aefd YL	224	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	225	struct orangefs_kernel_op_s *new_op;
db0267e7	226	struct orangefs_object_kref ref;
274dcf55	227	struct inode *inode;
a55f2d86	228	struct iattr iattr;
c42293a9	229	int mode = 0755;
274dcf55 MM	230	int ret;
	231
	232	gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__);
	233
	234	if (!symname)
	235	return -EINVAL;
	236
c62da585 MB	237	if (strlen(symname)+1 > ORANGEFS_NAME_MAX)
	238	return -ENAMETOOLONG;
	239
8bb8aefd	240	new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK);
274dcf55 MM	241	if (!new_op)
	242	return -ENOMEM;
	243
	244	new_op->upcall.req.sym.parent_refn = parent->refn;
	245
	246	fill_default_sys_attrs(new_op->upcall.req.sym.attributes,
8bb8aefd	247	ORANGEFS_TYPE_SYMLINK,
274dcf55 MM	248	mode);
	249
	250	strncpy(new_op->upcall.req.sym.entry_name,
	251	dentry->d_name.name,
6bdfb48d XW	252	ORANGEFS_NAME_MAX - 1);
6bdfb48d XW	253	strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX - 1);
274dcf55 MM	254
	255	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	256
	257	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	258	"Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
274dcf55 MM	259	&new_op->downcall.resp.sym.refn.khandle,
	260	new_op->downcall.resp.sym.refn.fs_id, ret);
	261
	262	if (ret < 0) {
	263	gossip_debug(GOSSIP_NAME_DEBUG,
	264	"%s: failed with error code %d\n",
	265	__func__, ret);
	266	goto out;
	267	}
	268
db0267e7	269	ref = new_op->downcall.resp.sym.refn;
db0267e7 MB	270
db0267e7 MB	271	inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK \| mode, 0, &ref);
274dcf55 MM	272	if (IS_ERR(inode)) {
274dcf55 MM	273	gossip_err
8bb8aefd	274	("*** Failed to allocate orangefs symlink inode\n");
274dcf55 MM	275	ret = PTR_ERR(inode);
	276	goto out;
	277	}
f6a4b4c9 MB	278	/*
	279	* This is necessary because orangefs_inode_getattr will not
	280	* re-read symlink size as it is impossible for it to change.
	281	* Invalidating the cache does not help. orangefs_new_inode
	282	* does not set the correct size (it does not know symname).
	283	*/
	284	inode->i_size = strlen(symname);
274dcf55 MM	285
	286	gossip_debug(GOSSIP_NAME_DEBUG,
	287	"Assigned symlink inode new number of %pU\n",
	288	get_khandle_from_ino(inode));
	289
1e2e547a	290	d_instantiate_new(dentry, inode);
804b1737	291	orangefs_set_timeout(dentry);
274dcf55 MM	292
274dcf55 MM	293	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	294	"Inode (Symlink) %pU -> %pd\n",
274dcf55	295	get_khandle_from_ino(inode),
f66debf1	296	dentry);
274dcf55	297
a55f2d86	298	memset(&iattr, 0, sizeof iattr);
afd9fb2a MB	299	iattr.ia_valid \|= ATTR_MTIME \| ATTR_CTIME;
	300	iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
	301	__orangefs_setattr(dir, &iattr);
274dcf55 MM	302	ret = 0;
274dcf55 MM	303	out:
34e6148a	304	op_release(new_op);
274dcf55 MM	305	return ret;
	306	}
	307
c54bd91e	308	static int orangefs_mkdir(struct mnt_idmap idmap, struct inode dir,
549c7297	309	struct dentry *dentry, umode_t mode)
274dcf55	310	{
8bb8aefd YL	311	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	312	struct orangefs_kernel_op_s *new_op;
db0267e7	313	struct orangefs_object_kref ref;
274dcf55	314	struct inode *inode;
a55f2d86	315	struct iattr iattr;
274dcf55 MM	316	int ret;
274dcf55 MM	317
8bb8aefd	318	new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR);
274dcf55 MM	319	if (!new_op)
	320	return -ENOMEM;
	321
	322	new_op->upcall.req.mkdir.parent_refn = parent->refn;
	323
	324	fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes,
8bb8aefd	325	ORANGEFS_TYPE_DIRECTORY, mode);
274dcf55 MM	326
274dcf55 MM	327	strncpy(new_op->upcall.req.mkdir.d_name,
6bdfb48d	328	dentry->d_name.name, ORANGEFS_NAME_MAX - 1);
274dcf55 MM	329
	330	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	331
	332	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	333	"Mkdir Got ORANGEFS handle %pU on fsid %d\n",
274dcf55 MM	334	&new_op->downcall.resp.mkdir.refn.khandle,
	335	new_op->downcall.resp.mkdir.refn.fs_id);
	336
	337	if (ret < 0) {
	338	gossip_debug(GOSSIP_NAME_DEBUG,
	339	"%s: failed with error code %d\n",
	340	__func__, ret);
	341	goto out;
	342	}
	343
db0267e7	344	ref = new_op->downcall.resp.mkdir.refn;
db0267e7 MB	345
db0267e7 MB	346	inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR \| mode, 0, &ref);
274dcf55	347	if (IS_ERR(inode)) {
8bb8aefd	348	gossip_err("*** Failed to allocate orangefs dir inode\n");
274dcf55 MM	349	ret = PTR_ERR(inode);
	350	goto out;
	351	}
	352
	353	gossip_debug(GOSSIP_NAME_DEBUG,
	354	"Assigned dir inode new number of %pU\n",
	355	get_khandle_from_ino(inode));
	356
1e2e547a	357	d_instantiate_new(dentry, inode);
804b1737	358	orangefs_set_timeout(dentry);
274dcf55 MM	359
274dcf55 MM	360	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	361	"Inode (Directory) %pU -> %pd\n",
274dcf55	362	get_khandle_from_ino(inode),
f66debf1	363	dentry);
274dcf55 MM	364
	365	/*
	366	* NOTE: we have no good way to keep nlink consistent for directories
	367	* across clients; keep constant at 1.
	368	*/
a55f2d86	369	memset(&iattr, 0, sizeof iattr);
afd9fb2a MB	370	iattr.ia_valid \|= ATTR_MTIME \| ATTR_CTIME;
	371	iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
	372	__orangefs_setattr(dir, &iattr);
274dcf55	373	out:
34e6148a	374	op_release(new_op);
274dcf55 MM	375	return ret;
	376	}
	377
e18275ae	378	static int orangefs_rename(struct mnt_idmap *idmap,
549c7297	379	struct inode *old_dir,
274dcf55 MM	380	struct dentry *old_dentry,
274dcf55 MM	381	struct inode *new_dir,
1cd66c93 MS	382	struct dentry *new_dentry,
1cd66c93 MS	383	unsigned int flags)
274dcf55	384	{
8bb8aefd	385	struct orangefs_kernel_op_s *new_op;
5e7f1d43	386	struct iattr iattr;
274dcf55 MM	387	int ret;
274dcf55 MM	388
1cd66c93 MS	389	if (flags)
	390	return -EINVAL;
	391
274dcf55	392	gossip_debug(GOSSIP_NAME_DEBUG,
96b0cffb AV	393	"orangefs_rename: called (%pd2 => %pd2) ct=%d\n",
96b0cffb AV	394	old_dentry, new_dentry, d_count(new_dentry));
274dcf55	395
5e7f1d43	396	memset(&iattr, 0, sizeof iattr);
afd9fb2a MB	397	iattr.ia_valid \|= ATTR_MTIME \| ATTR_CTIME;
	398	iattr.ia_mtime = iattr.ia_ctime = current_time(new_dir);
	399	__orangefs_setattr(new_dir, &iattr);
71680c18	400
8bb8aefd	401	new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
274dcf55 MM	402	if (!new_op)
	403	return -EINVAL;
	404
8bb8aefd YL	405	new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn;
8bb8aefd YL	406	new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn;
274dcf55 MM	407
	408	strncpy(new_op->upcall.req.rename.d_old_name,
	409	old_dentry->d_name.name,
6bdfb48d	410	ORANGEFS_NAME_MAX - 1);
274dcf55 MM	411	strncpy(new_op->upcall.req.rename.d_new_name,
274dcf55 MM	412	new_dentry->d_name.name,
6bdfb48d	413	ORANGEFS_NAME_MAX - 1);
274dcf55 MM	414
274dcf55 MM	415	ret = service_operation(new_op,
8bb8aefd	416	"orangefs_rename",
274dcf55 MM	417	get_interruptible_flag(old_dentry->d_inode));
	418
	419	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	420	"orangefs_rename: got downcall status %d\n",
274dcf55 MM	421	ret);
	422
	423	if (new_dentry->d_inode)
c2050a45	424	new_dentry->d_inode->i_ctime = current_time(new_dentry->d_inode);
274dcf55 MM	425
	426	op_release(new_op);
	427	return ret;
	428	}
	429
8bb8aefd	430	/* ORANGEFS implementation of VFS inode operations for directories */
6f3fc107	431	const struct inode_operations orangefs_dir_inode_operations = {
8bb8aefd	432	.lookup = orangefs_lookup,
cac2f8b8	433	.get_inode_acl = orangefs_get_acl,
8bb8aefd YL	434	.set_acl = orangefs_set_acl,
	435	.create = orangefs_create,
	436	.unlink = orangefs_unlink,
	437	.symlink = orangefs_symlink,
	438	.mkdir = orangefs_mkdir,
	439	.rmdir = orangefs_unlink,
	440	.rename = orangefs_rename,
	441	.setattr = orangefs_setattr,
	442	.getattr = orangefs_getattr,
8bb8aefd	443	.listxattr = orangefs_listxattr,
933287da	444	.permission = orangefs_permission,
a55f2d86	445	.update_time = orangefs_update_time,
274dcf55	446	};