[mirror_ubuntu-zesty-kernel.git] / fs / orangefs / namei.c

/*
 * (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 inode *inode;
	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);

	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;

	inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG | mode, 0,
				&new_op->downcall.resp.create.refn);
	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(dentry, inode);
	unlock_new_inode(inode);
	orangefs_set_timeout(dentry);
	ORANGEFS_I(inode)->getattr_time = jiffies - 1;

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

	SetMtimeFlag(parent);
	dir->i_mtime = dir->i_ctime = current_time(dir);
	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;
	struct dentry *res;
	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);

	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) {
		if (ret == -ENOENT) {
			/*
			 * if no inode was found, add a negative dentry to
			 * dcache anyway; if we don't, we don't hold expected
			 * lookup semantics and we most noticeably break
			 * during directory renames.
			 *
			 * however, if the operation failed or exited, do not
			 * add the dentry (e.g. in the case that a touch is
			 * issued on a file that already exists that was
			 * interrupted during this lookup -- no need to add
			 * another negative dentry for an existing file)
			 */

			gossip_debug(GOSSIP_NAME_DEBUG,
				     "orangefs_lookup: Adding *negative* dentry "
				     "%p for %pd\n",
				     dentry,
				     dentry);

			d_add(dentry, NULL);
			res = NULL;
			goto out;
		}

		/* must be a non-recoverable error */
		res = ERR_PTR(ret);
		goto out;
	}

	orangefs_set_timeout(dentry);

	inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
	if (IS_ERR(inode)) {
		gossip_debug(GOSSIP_NAME_DEBUG,
			"error %ld from iget\n", PTR_ERR(inode));
		res = ERR_CAST(inode);
		goto out;
	}

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "%s:%s:%d "
		     "Found good inode [%lu] with count [%d]\n",
		     __FILE__,
		     __func__,
		     __LINE__,
		     inode->i_ino,
		     (int)atomic_read(&inode->i_count));

	/* update dentry/inode pair into dcache */
	res = d_splice_alias(inode, dentry);

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "Lookup success (inode ct = %d)\n",
		     (int)atomic_read(&inode->i_count));
out:
	op_release(new_op);
	return res;
}

/* 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;
	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);

	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);

		SetMtimeFlag(parent);
		dir->i_mtime = dir->i_ctime = current_time(dir);
		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 inode *inode;
	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);
	strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX);

	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;
	}

	inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK | mode, 0,
				&new_op->downcall.resp.sym.refn);
	if (IS_ERR(inode)) {
		gossip_err
		    ("*** Failed to allocate orangefs symlink inode\n");
		ret = PTR_ERR(inode);
		goto out;
	}

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

	d_instantiate(dentry, inode);
	unlock_new_inode(inode);
	orangefs_set_timeout(dentry);
	ORANGEFS_I(inode)->getattr_time = jiffies - 1;

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

	SetMtimeFlag(parent);
	dir->i_mtime = dir->i_ctime = current_time(dir);
	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 inode *inode;
	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);

	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;
	}

	inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR | mode, 0,
				&new_op->downcall.resp.mkdir.refn);
	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(dentry, inode);
	unlock_new_inode(inode);
	orangefs_set_timeout(dentry);
	ORANGEFS_I(inode)->getattr_time = jiffies - 1;

	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.
	 */
	SetMtimeFlag(parent);
	dir->i_mtime = dir->i_ctime = current_time(dir);
	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);
	strncpy(new_op->upcall.req.rename.d_new_name,
		new_dentry->d_name.name,
		ORANGEFS_NAME_MAX);

	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,
};
Commit	Line	Data
274dcf55 MM	1	/*
	2	* (C) 2001 Clemson University and The University of Chicago
	3	*
	4	* See COPYING in top-level directory.
	5	*/
	6
	7	/*
	8	* Linux VFS namei operations.
	9	*/
	10
	11	#include "protocol.h"
575e9461	12	#include "orangefs-kernel.h"
274dcf55 MM	13
	14	/*
	15	* Get a newly allocated inode to go with a negative dentry.
	16	*/
8bb8aefd	17	static int orangefs_create(struct inode *dir,
274dcf55 MM	18	struct dentry *dentry,
	19	umode_t mode,
	20	bool exclusive)
	21	{
8bb8aefd YL	22	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	23	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	24	struct inode *inode;
	25	int ret;
	26
f66debf1	27	gossip_debug(GOSSIP_NAME_DEBUG, "%s: %pd\n",
5253487e	28	__func__,
f66debf1	29	dentry);
274dcf55	30
8bb8aefd	31	new_op = op_alloc(ORANGEFS_VFS_OP_CREATE);
274dcf55 MM	32	if (!new_op)
	33	return -ENOMEM;
	34
	35	new_op->upcall.req.create.parent_refn = parent->refn;
	36
	37	fill_default_sys_attrs(new_op->upcall.req.create.attributes,
8bb8aefd	38	ORANGEFS_TYPE_METAFILE, mode);
274dcf55 MM	39
274dcf55 MM	40	strncpy(new_op->upcall.req.create.d_name,
47b4948f	41	dentry->d_name.name, ORANGEFS_NAME_MAX);
274dcf55 MM	42
	43	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	44
	45	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	46	"%s: %pd: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
5253487e	47	__func__,
f66debf1	48	dentry,
274dcf55	49	&new_op->downcall.resp.create.refn.khandle,
5253487e MM	50	new_op->downcall.resp.create.refn.fs_id,
	51	new_op,
	52	ret);
274dcf55	53
5253487e	54	if (ret < 0)
274dcf55	55	goto out;
274dcf55	56
8bb8aefd	57	inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG \| mode, 0,
274dcf55 MM	58	&new_op->downcall.resp.create.refn);
274dcf55 MM	59	if (IS_ERR(inode)) {
f66debf1	60	gossip_err("%s: Failed to allocate inode for file :%pd:\n",
5253487e	61	__func__,
f66debf1	62	dentry);
274dcf55 MM	63	ret = PTR_ERR(inode);
	64	goto out;
	65	}
	66
	67	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	68	"%s: Assigned inode :%pU: for file :%pd:\n",
5253487e MM	69	__func__,
5253487e MM	70	get_khandle_from_ino(inode),
f66debf1	71	dentry);
274dcf55 MM	72
	73	d_instantiate(dentry, inode);
	74	unlock_new_inode(inode);
804b1737	75	orangefs_set_timeout(dentry);
8bbb20a8	76	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
274dcf55 MM	77
274dcf55 MM	78	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	79	"%s: dentry instantiated for %pd\n",
5253487e	80	__func__,
f66debf1	81	dentry);
274dcf55 MM	82
274dcf55 MM	83	SetMtimeFlag(parent);
c2050a45	84	dir->i_mtime = dir->i_ctime = current_time(dir);
274dcf55 MM	85	mark_inode_dirty_sync(dir);
	86	ret = 0;
	87	out:
	88	op_release(new_op);
5253487e	89	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	90	"%s: %pd: returning %d\n",
5253487e	91	__func__,
f66debf1	92	dentry,
5253487e	93	ret);
274dcf55 MM	94	return ret;
	95	}
	96
	97	/*
	98	* Attempt to resolve an object name (dentry->d_name), parent handle, and
	99	* fsid into a handle for the object.
	100	*/
8bb8aefd	101	static struct dentry orangefs_lookup(struct inode dir, struct dentry *dentry,
274dcf55 MM	102	unsigned int flags)
274dcf55 MM	103	{
8bb8aefd YL	104	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	105	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	106	struct inode *inode;
	107	struct dentry *res;
	108	int ret = -EINVAL;
	109
	110	/*
	111	* in theory we could skip a lookup here (if the intent is to
	112	* create) in order to avoid a potentially failed lookup, but
	113	* leaving it in can skip a valid lookup and try to create a file
	114	* that already exists (e.g. the vfs already handles checking for
	115	* -EEXIST on O_EXCL opens, which is broken if we skip this lookup
	116	* in the create path)
	117	*/
f66debf1 AV	118	gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %pd\n",
f66debf1 AV	119	__func__, dentry);
274dcf55	120
47b4948f	121	if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1))
274dcf55 MM	122	return ERR_PTR(-ENAMETOOLONG);
274dcf55 MM	123
8bb8aefd	124	new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP);
274dcf55 MM	125	if (!new_op)
	126	return ERR_PTR(-ENOMEM);
	127
7cec28e9	128	new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW;
274dcf55 MM	129
	130	gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n",
	131	__FILE__,
	132	__func__,
	133	__LINE__,
	134	&parent->refn.khandle);
	135	new_op->upcall.req.lookup.parent_refn = parent->refn;
	136
	137	strncpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name,
47b4948f	138	ORANGEFS_NAME_MAX);
274dcf55 MM	139
274dcf55 MM	140	gossip_debug(GOSSIP_NAME_DEBUG,
6ceaf781	141	"%s: doing lookup on %s under %pU,%d\n",
274dcf55 MM	142	__func__,
	143	new_op->upcall.req.lookup.d_name,
	144	&new_op->upcall.req.lookup.parent_refn.khandle,
6ceaf781	145	new_op->upcall.req.lookup.parent_refn.fs_id);
274dcf55 MM	146
	147	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	148
	149	gossip_debug(GOSSIP_NAME_DEBUG,
	150	"Lookup Got %pU, fsid %d (ret=%d)\n",
	151	&new_op->downcall.resp.lookup.refn.khandle,
	152	new_op->downcall.resp.lookup.refn.fs_id,
	153	ret);
	154
	155	if (ret < 0) {
	156	if (ret == -ENOENT) {
	157	/*
	158	* if no inode was found, add a negative dentry to
	159	* dcache anyway; if we don't, we don't hold expected
	160	* lookup semantics and we most noticeably break
	161	* during directory renames.
	162	*
	163	* however, if the operation failed or exited, do not
	164	* add the dentry (e.g. in the case that a touch is
	165	* issued on a file that already exists that was
	166	* interrupted during this lookup -- no need to add
	167	* another negative dentry for an existing file)
	168	*/
	169
	170	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	171	"orangefs_lookup: Adding negative dentry "
f66debf1	172	"%p for %pd\n",
274dcf55	173	dentry,
f66debf1	174	dentry);
274dcf55 MM	175
	176	d_add(dentry, NULL);
	177	res = NULL;
	178	goto out;
	179	}
	180
	181	/* must be a non-recoverable error */
	182	res = ERR_PTR(ret);
	183	goto out;
	184	}
	185
804b1737	186	orangefs_set_timeout(dentry);
31b7c1ab	187
8bb8aefd	188	inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
274dcf55 MM	189	if (IS_ERR(inode)) {
	190	gossip_debug(GOSSIP_NAME_DEBUG,
	191	"error %ld from iget\n", PTR_ERR(inode));
	192	res = ERR_CAST(inode);
	193	goto out;
	194	}
	195
	196	gossip_debug(GOSSIP_NAME_DEBUG,
	197	"%s:%s:%d "
	198	"Found good inode [%lu] with count [%d]\n",
	199	__FILE__,
	200	__func__,
	201	__LINE__,
	202	inode->i_ino,
	203	(int)atomic_read(&inode->i_count));
	204
	205	/* update dentry/inode pair into dcache */
	206	res = d_splice_alias(inode, dentry);
	207
	208	gossip_debug(GOSSIP_NAME_DEBUG,
	209	"Lookup success (inode ct = %d)\n",
	210	(int)atomic_read(&inode->i_count));
	211	out:
	212	op_release(new_op);
	213	return res;
	214	}
	215
	216	/* return 0 on success; non-zero otherwise */
8bb8aefd	217	static int orangefs_unlink(struct inode dir, struct dentry dentry)
274dcf55 MM	218	{
274dcf55 MM	219	struct inode *inode = dentry->d_inode;
8bb8aefd YL	220	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	221	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	222	int ret;
	223
	224	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	225	"%s: called on %pd\n"
274dcf55 MM	226	" (inode %pU): Parent is %pU \| fs_id %d\n",
274dcf55 MM	227	__func__,
f66debf1	228	dentry,
274dcf55 MM	229	get_khandle_from_ino(inode),
	230	&parent->refn.khandle,
	231	parent->refn.fs_id);
	232
8bb8aefd	233	new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE);
274dcf55 MM	234	if (!new_op)
	235	return -ENOMEM;
	236
	237	new_op->upcall.req.remove.parent_refn = parent->refn;
	238	strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name,
47b4948f	239	ORANGEFS_NAME_MAX);
274dcf55	240
8bb8aefd	241	ret = service_operation(new_op, "orangefs_unlink",
274dcf55 MM	242	get_interruptible_flag(inode));
274dcf55 MM	243
5253487e MM	244	gossip_debug(GOSSIP_NAME_DEBUG,
	245	"%s: service_operation returned:%d:\n",
	246	__func__,
	247	ret);
	248
274dcf55 MM	249	op_release(new_op);
	250
	251	if (!ret) {
	252	drop_nlink(inode);
	253
	254	SetMtimeFlag(parent);
c2050a45	255	dir->i_mtime = dir->i_ctime = current_time(dir);
274dcf55 MM	256	mark_inode_dirty_sync(dir);
	257	}
	258	return ret;
	259	}
	260
8bb8aefd	261	static int orangefs_symlink(struct inode *dir,
274dcf55 MM	262	struct dentry *dentry,
	263	const char *symname)
	264	{
8bb8aefd YL	265	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	266	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	267	struct inode *inode;
	268	int mode = 755;
	269	int ret;
	270
	271	gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__);
	272
	273	if (!symname)
	274	return -EINVAL;
	275
c62da585 MB	276	if (strlen(symname)+1 > ORANGEFS_NAME_MAX)
	277	return -ENAMETOOLONG;
	278
8bb8aefd	279	new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK);
274dcf55 MM	280	if (!new_op)
	281	return -ENOMEM;
	282
	283	new_op->upcall.req.sym.parent_refn = parent->refn;
	284
	285	fill_default_sys_attrs(new_op->upcall.req.sym.attributes,
8bb8aefd	286	ORANGEFS_TYPE_SYMLINK,
274dcf55 MM	287	mode);
	288
	289	strncpy(new_op->upcall.req.sym.entry_name,
	290	dentry->d_name.name,
47b4948f MB	291	ORANGEFS_NAME_MAX);
47b4948f MB	292	strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX);
274dcf55 MM	293
	294	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	295
	296	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	297	"Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
274dcf55 MM	298	&new_op->downcall.resp.sym.refn.khandle,
	299	new_op->downcall.resp.sym.refn.fs_id, ret);
	300
	301	if (ret < 0) {
	302	gossip_debug(GOSSIP_NAME_DEBUG,
	303	"%s: failed with error code %d\n",
	304	__func__, ret);
	305	goto out;
	306	}
	307
8bb8aefd	308	inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK \| mode, 0,
274dcf55 MM	309	&new_op->downcall.resp.sym.refn);
	310	if (IS_ERR(inode)) {
	311	gossip_err
8bb8aefd	312	("*** Failed to allocate orangefs symlink inode\n");
274dcf55 MM	313	ret = PTR_ERR(inode);
	314	goto out;
	315	}
	316
	317	gossip_debug(GOSSIP_NAME_DEBUG,
	318	"Assigned symlink inode new number of %pU\n",
	319	get_khandle_from_ino(inode));
	320
	321	d_instantiate(dentry, inode);
	322	unlock_new_inode(inode);
804b1737	323	orangefs_set_timeout(dentry);
8bbb20a8	324	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
274dcf55 MM	325
274dcf55 MM	326	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	327	"Inode (Symlink) %pU -> %pd\n",
274dcf55	328	get_khandle_from_ino(inode),
f66debf1	329	dentry);
274dcf55 MM	330
274dcf55 MM	331	SetMtimeFlag(parent);
c2050a45	332	dir->i_mtime = dir->i_ctime = current_time(dir);
274dcf55 MM	333	mark_inode_dirty_sync(dir);
	334	ret = 0;
	335	out:
	336	op_release(new_op);
	337	return ret;
	338	}
	339
8bb8aefd	340	static int orangefs_mkdir(struct inode dir, struct dentry dentry, umode_t mode)
274dcf55	341	{
8bb8aefd YL	342	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	343	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	344	struct inode *inode;
	345	int ret;
	346
8bb8aefd	347	new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR);
274dcf55 MM	348	if (!new_op)
	349	return -ENOMEM;
	350
	351	new_op->upcall.req.mkdir.parent_refn = parent->refn;
	352
	353	fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes,
8bb8aefd	354	ORANGEFS_TYPE_DIRECTORY, mode);
274dcf55 MM	355
274dcf55 MM	356	strncpy(new_op->upcall.req.mkdir.d_name,
47b4948f	357	dentry->d_name.name, ORANGEFS_NAME_MAX);
274dcf55 MM	358
	359	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	360
	361	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	362	"Mkdir Got ORANGEFS handle %pU on fsid %d\n",
274dcf55 MM	363	&new_op->downcall.resp.mkdir.refn.khandle,
	364	new_op->downcall.resp.mkdir.refn.fs_id);
	365
	366	if (ret < 0) {
	367	gossip_debug(GOSSIP_NAME_DEBUG,
	368	"%s: failed with error code %d\n",
	369	__func__, ret);
	370	goto out;
	371	}
	372
8bb8aefd	373	inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR \| mode, 0,
274dcf55 MM	374	&new_op->downcall.resp.mkdir.refn);
274dcf55 MM	375	if (IS_ERR(inode)) {
8bb8aefd	376	gossip_err("*** Failed to allocate orangefs dir inode\n");
274dcf55 MM	377	ret = PTR_ERR(inode);
	378	goto out;
	379	}
	380
	381	gossip_debug(GOSSIP_NAME_DEBUG,
	382	"Assigned dir inode new number of %pU\n",
	383	get_khandle_from_ino(inode));
	384
	385	d_instantiate(dentry, inode);
	386	unlock_new_inode(inode);
804b1737	387	orangefs_set_timeout(dentry);
8bbb20a8	388	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
274dcf55 MM	389
274dcf55 MM	390	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	391	"Inode (Directory) %pU -> %pd\n",
274dcf55	392	get_khandle_from_ino(inode),
f66debf1	393	dentry);
274dcf55 MM	394
	395	/*
	396	* NOTE: we have no good way to keep nlink consistent for directories
	397	* across clients; keep constant at 1.
	398	*/
	399	SetMtimeFlag(parent);
c2050a45	400	dir->i_mtime = dir->i_ctime = current_time(dir);
274dcf55 MM	401	mark_inode_dirty_sync(dir);
	402	out:
	403	op_release(new_op);
	404	return ret;
	405	}
	406
8bb8aefd	407	static int orangefs_rename(struct inode *old_dir,
274dcf55 MM	408	struct dentry *old_dentry,
274dcf55 MM	409	struct inode *new_dir,
1cd66c93 MS	410	struct dentry *new_dentry,
1cd66c93 MS	411	unsigned int flags)
274dcf55	412	{
8bb8aefd	413	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	414	int ret;
274dcf55 MM	415
1cd66c93 MS	416	if (flags)
	417	return -EINVAL;
	418
274dcf55	419	gossip_debug(GOSSIP_NAME_DEBUG,
96b0cffb AV	420	"orangefs_rename: called (%pd2 => %pd2) ct=%d\n",
96b0cffb AV	421	old_dentry, new_dentry, d_count(new_dentry));
274dcf55	422
8bbb20a8	423	ORANGEFS_I(new_dentry->d_parent->d_inode)->getattr_time = jiffies - 1;
71680c18	424
8bb8aefd	425	new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
274dcf55 MM	426	if (!new_op)
	427	return -EINVAL;
	428
8bb8aefd YL	429	new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn;
8bb8aefd YL	430	new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn;
274dcf55 MM	431
	432	strncpy(new_op->upcall.req.rename.d_old_name,
	433	old_dentry->d_name.name,
47b4948f	434	ORANGEFS_NAME_MAX);
274dcf55 MM	435	strncpy(new_op->upcall.req.rename.d_new_name,
274dcf55 MM	436	new_dentry->d_name.name,
47b4948f	437	ORANGEFS_NAME_MAX);
274dcf55 MM	438
274dcf55 MM	439	ret = service_operation(new_op,
8bb8aefd	440	"orangefs_rename",
274dcf55 MM	441	get_interruptible_flag(old_dentry->d_inode));
	442
	443	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	444	"orangefs_rename: got downcall status %d\n",
274dcf55 MM	445	ret);
	446
	447	if (new_dentry->d_inode)
c2050a45	448	new_dentry->d_inode->i_ctime = current_time(new_dentry->d_inode);
274dcf55 MM	449
	450	op_release(new_op);
	451	return ret;
	452	}
	453
8bb8aefd	454	/* ORANGEFS implementation of VFS inode operations for directories */
6f3fc107	455	const struct inode_operations orangefs_dir_inode_operations = {
8bb8aefd YL	456	.lookup = orangefs_lookup,
	457	.get_acl = orangefs_get_acl,
	458	.set_acl = orangefs_set_acl,
	459	.create = orangefs_create,
	460	.unlink = orangefs_unlink,
	461	.symlink = orangefs_symlink,
	462	.mkdir = orangefs_mkdir,
	463	.rmdir = orangefs_unlink,
	464	.rename = orangefs_rename,
	465	.setattr = orangefs_setattr,
	466	.getattr = orangefs_getattr,
8bb8aefd	467	.listxattr = orangefs_listxattr,
933287da	468	.permission = orangefs_permission,
274dcf55	469	};