[linux-2.6-block.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: %s\n",
		     __func__,
		     dentry->d_name.name);

	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: %s: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
		     __func__,
		     dentry->d_name.name,
		     &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 :%s:\n",
			   __func__,
			   dentry->d_name.name);
		ret = PTR_ERR(inode);
		goto out;
	}

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "%s: Assigned inode :%pU: for file :%s:\n",
		     __func__,
		     get_khandle_from_ino(inode),
		     dentry->d_name.name);

	d_instantiate(dentry, inode);
	unlock_new_inode(inode);
	dentry->d_time = jiffies + dcache_timeout_msecs*HZ/1000;
	ORANGEFS_I(inode)->getattr_time = jiffies - 1;

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "%s: dentry instantiated for %s\n",
		     __func__,
		     dentry->d_name.name);

	SetMtimeFlag(parent);
	dir->i_mtime = dir->i_ctime = current_fs_time(dir->i_sb);
	mark_inode_dirty_sync(dir);
	ret = 0;
out:
	op_release(new_op);
	gossip_debug(GOSSIP_NAME_DEBUG,
		     "%s: %s: returning %d\n",
		     __func__,
		     dentry->d_name.name,
		     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 %s\n",
		     __func__, dentry->d_name.name);

	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 %s\n",
				     dentry,
				     dentry->d_name.name);

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

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

	dentry->d_time = jiffies + dcache_timeout_msecs*HZ/1000;

	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;
	}

	ORANGEFS_I(inode)->getattr_time = jiffies - 1;

	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 %s\n"
		     "  (inode %pU): Parent is %pU | fs_id %d\n",
		     __func__,
		     dentry->d_name.name,
		     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_fs_time(dir->i_sb);
		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);
	dentry->d_time = jiffies + dcache_timeout_msecs*HZ/1000;
	ORANGEFS_I(inode)->getattr_time = jiffies - 1;

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "Inode (Symlink) %pU -> %s\n",
		     get_khandle_from_ino(inode),
		     dentry->d_name.name);

	SetMtimeFlag(parent);
	dir->i_mtime = dir->i_ctime = current_fs_time(dir->i_sb);
	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);
	dentry->d_time = jiffies + dcache_timeout_msecs*HZ/1000;
	ORANGEFS_I(inode)->getattr_time = jiffies - 1;

	gossip_debug(GOSSIP_NAME_DEBUG,
		     "Inode (Directory) %pU -> %s\n",
		     get_khandle_from_ino(inode),
		     dentry->d_name.name);

	/*
	 * 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_fs_time(dir->i_sb);
	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)
{
	struct orangefs_kernel_op_s *new_op;
	int ret;

	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;

	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,
	.setxattr = generic_setxattr,
	.getxattr = generic_getxattr,
	.removexattr = generic_removexattr,
	.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
5253487e MM	27	gossip_debug(GOSSIP_NAME_DEBUG, "%s: %s\n",
	28	__func__,
	29	dentry->d_name.name);
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,
5253487e MM	46	"%s: %s: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
	47	__func__,
	48	dentry->d_name.name,
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)) {
5253487e MM	60	gossip_err("%s: Failed to allocate inode for file :%s:\n",
	61	__func__,
	62	dentry->d_name.name);
274dcf55 MM	63	ret = PTR_ERR(inode);
	64	goto out;
	65	}
	66
	67	gossip_debug(GOSSIP_NAME_DEBUG,
5253487e MM	68	"%s: Assigned inode :%pU: for file :%s:\n",
	69	__func__,
	70	get_khandle_from_ino(inode),
	71	dentry->d_name.name);
274dcf55 MM	72
	73	d_instantiate(dentry, inode);
	74	unlock_new_inode(inode);
4cd8f319	75	dentry->d_time = jiffies + dcache_timeout_msecs*HZ/1000;
8bbb20a8	76	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
274dcf55 MM	77
274dcf55 MM	78	gossip_debug(GOSSIP_NAME_DEBUG,
5253487e MM	79	"%s: dentry instantiated for %s\n",
5253487e MM	80	__func__,
274dcf55 MM	81	dentry->d_name.name);
	82
	83	SetMtimeFlag(parent);
	84	dir->i_mtime = dir->i_ctime = current_fs_time(dir->i_sb);
	85	mark_inode_dirty_sync(dir);
	86	ret = 0;
	87	out:
	88	op_release(new_op);
5253487e MM	89	gossip_debug(GOSSIP_NAME_DEBUG,
	90	"%s: %s: returning %d\n",
	91	__func__,
	92	dentry->d_name.name,
	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	*/
	118	gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %s\n",
	119	__func__, dentry->d_name.name);
	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 "
274dcf55 MM	172	"%p for %s\n",
	173	dentry,
	174	dentry->d_name.name);
	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
4cd8f319	186	dentry->d_time = jiffies + dcache_timeout_msecs*HZ/1000;
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
8bbb20a8	196	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
71680c18	197
274dcf55 MM	198	gossip_debug(GOSSIP_NAME_DEBUG,
	199	"%s:%s:%d "
	200	"Found good inode [%lu] with count [%d]\n",
	201	__FILE__,
	202	__func__,
	203	__LINE__,
	204	inode->i_ino,
	205	(int)atomic_read(&inode->i_count));
	206
	207	/* update dentry/inode pair into dcache */
	208	res = d_splice_alias(inode, dentry);
	209
	210	gossip_debug(GOSSIP_NAME_DEBUG,
	211	"Lookup success (inode ct = %d)\n",
	212	(int)atomic_read(&inode->i_count));
	213	out:
	214	op_release(new_op);
	215	return res;
	216	}
	217
	218	/* return 0 on success; non-zero otherwise */
8bb8aefd	219	static int orangefs_unlink(struct inode dir, struct dentry dentry)
274dcf55 MM	220	{
274dcf55 MM	221	struct inode *inode = dentry->d_inode;
8bb8aefd YL	222	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	223	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	224	int ret;
	225
	226	gossip_debug(GOSSIP_NAME_DEBUG,
	227	"%s: called on %s\n"
	228	" (inode %pU): Parent is %pU \| fs_id %d\n",
	229	__func__,
	230	dentry->d_name.name,
	231	get_khandle_from_ino(inode),
	232	&parent->refn.khandle,
	233	parent->refn.fs_id);
	234
8bb8aefd	235	new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE);
274dcf55 MM	236	if (!new_op)
	237	return -ENOMEM;
	238
	239	new_op->upcall.req.remove.parent_refn = parent->refn;
	240	strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name,
47b4948f	241	ORANGEFS_NAME_MAX);
274dcf55	242
8bb8aefd	243	ret = service_operation(new_op, "orangefs_unlink",
274dcf55 MM	244	get_interruptible_flag(inode));
274dcf55 MM	245
5253487e MM	246	gossip_debug(GOSSIP_NAME_DEBUG,
	247	"%s: service_operation returned:%d:\n",
	248	__func__,
	249	ret);
	250
274dcf55 MM	251	op_release(new_op);
	252
	253	if (!ret) {
	254	drop_nlink(inode);
	255
	256	SetMtimeFlag(parent);
	257	dir->i_mtime = dir->i_ctime = current_fs_time(dir->i_sb);
	258	mark_inode_dirty_sync(dir);
	259	}
	260	return ret;
	261	}
	262
8bb8aefd	263	static int orangefs_symlink(struct inode *dir,
274dcf55 MM	264	struct dentry *dentry,
	265	const char *symname)
	266	{
8bb8aefd YL	267	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	268	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	269	struct inode *inode;
	270	int mode = 755;
	271	int ret;
	272
	273	gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__);
	274
	275	if (!symname)
	276	return -EINVAL;
	277
c62da585 MB	278	if (strlen(symname)+1 > ORANGEFS_NAME_MAX)
	279	return -ENAMETOOLONG;
	280
8bb8aefd	281	new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK);
274dcf55 MM	282	if (!new_op)
	283	return -ENOMEM;
	284
	285	new_op->upcall.req.sym.parent_refn = parent->refn;
	286
	287	fill_default_sys_attrs(new_op->upcall.req.sym.attributes,
8bb8aefd	288	ORANGEFS_TYPE_SYMLINK,
274dcf55 MM	289	mode);
	290
	291	strncpy(new_op->upcall.req.sym.entry_name,
	292	dentry->d_name.name,
47b4948f MB	293	ORANGEFS_NAME_MAX);
47b4948f MB	294	strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX);
274dcf55 MM	295
	296	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	297
	298	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	299	"Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
274dcf55 MM	300	&new_op->downcall.resp.sym.refn.khandle,
	301	new_op->downcall.resp.sym.refn.fs_id, ret);
	302
	303	if (ret < 0) {
	304	gossip_debug(GOSSIP_NAME_DEBUG,
	305	"%s: failed with error code %d\n",
	306	__func__, ret);
	307	goto out;
	308	}
	309
8bb8aefd	310	inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK \| mode, 0,
274dcf55 MM	311	&new_op->downcall.resp.sym.refn);
	312	if (IS_ERR(inode)) {
	313	gossip_err
8bb8aefd	314	("*** Failed to allocate orangefs symlink inode\n");
274dcf55 MM	315	ret = PTR_ERR(inode);
	316	goto out;
	317	}
	318
	319	gossip_debug(GOSSIP_NAME_DEBUG,
	320	"Assigned symlink inode new number of %pU\n",
	321	get_khandle_from_ino(inode));
	322
	323	d_instantiate(dentry, inode);
	324	unlock_new_inode(inode);
4cd8f319	325	dentry->d_time = jiffies + dcache_timeout_msecs*HZ/1000;
8bbb20a8	326	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
274dcf55 MM	327
	328	gossip_debug(GOSSIP_NAME_DEBUG,
	329	"Inode (Symlink) %pU -> %s\n",
	330	get_khandle_from_ino(inode),
	331	dentry->d_name.name);
	332
	333	SetMtimeFlag(parent);
	334	dir->i_mtime = dir->i_ctime = current_fs_time(dir->i_sb);
	335	mark_inode_dirty_sync(dir);
	336	ret = 0;
	337	out:
	338	op_release(new_op);
	339	return ret;
	340	}
	341
8bb8aefd	342	static int orangefs_mkdir(struct inode dir, struct dentry dentry, umode_t mode)
274dcf55	343	{
8bb8aefd YL	344	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	345	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	346	struct inode *inode;
	347	int ret;
	348
8bb8aefd	349	new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR);
274dcf55 MM	350	if (!new_op)
	351	return -ENOMEM;
	352
	353	new_op->upcall.req.mkdir.parent_refn = parent->refn;
	354
	355	fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes,
8bb8aefd	356	ORANGEFS_TYPE_DIRECTORY, mode);
274dcf55 MM	357
274dcf55 MM	358	strncpy(new_op->upcall.req.mkdir.d_name,
47b4948f	359	dentry->d_name.name, ORANGEFS_NAME_MAX);
274dcf55 MM	360
	361	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	362
	363	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	364	"Mkdir Got ORANGEFS handle %pU on fsid %d\n",
274dcf55 MM	365	&new_op->downcall.resp.mkdir.refn.khandle,
	366	new_op->downcall.resp.mkdir.refn.fs_id);
	367
	368	if (ret < 0) {
	369	gossip_debug(GOSSIP_NAME_DEBUG,
	370	"%s: failed with error code %d\n",
	371	__func__, ret);
	372	goto out;
	373	}
	374
8bb8aefd	375	inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR \| mode, 0,
274dcf55 MM	376	&new_op->downcall.resp.mkdir.refn);
274dcf55 MM	377	if (IS_ERR(inode)) {
8bb8aefd	378	gossip_err("*** Failed to allocate orangefs dir inode\n");
274dcf55 MM	379	ret = PTR_ERR(inode);
	380	goto out;
	381	}
	382
	383	gossip_debug(GOSSIP_NAME_DEBUG,
	384	"Assigned dir inode new number of %pU\n",
	385	get_khandle_from_ino(inode));
	386
	387	d_instantiate(dentry, inode);
	388	unlock_new_inode(inode);
4cd8f319	389	dentry->d_time = jiffies + dcache_timeout_msecs*HZ/1000;
8bbb20a8	390	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
274dcf55 MM	391
	392	gossip_debug(GOSSIP_NAME_DEBUG,
	393	"Inode (Directory) %pU -> %s\n",
	394	get_khandle_from_ino(inode),
	395	dentry->d_name.name);
	396
	397	/*
	398	* NOTE: we have no good way to keep nlink consistent for directories
	399	* across clients; keep constant at 1.
	400	*/
	401	SetMtimeFlag(parent);
	402	dir->i_mtime = dir->i_ctime = current_fs_time(dir->i_sb);
	403	mark_inode_dirty_sync(dir);
	404	out:
	405	op_release(new_op);
	406	return ret;
	407	}
	408
8bb8aefd	409	static int orangefs_rename(struct inode *old_dir,
274dcf55 MM	410	struct dentry *old_dentry,
	411	struct inode *new_dir,
	412	struct dentry *new_dentry)
	413	{
8bb8aefd	414	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	415	int ret;
	416
	417	gossip_debug(GOSSIP_NAME_DEBUG,
96b0cffb AV	418	"orangefs_rename: called (%pd2 => %pd2) ct=%d\n",
96b0cffb AV	419	old_dentry, new_dentry, d_count(new_dentry));
274dcf55	420
8bbb20a8	421	ORANGEFS_I(new_dentry->d_parent->d_inode)->getattr_time = jiffies - 1;
71680c18	422
8bb8aefd	423	new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
274dcf55 MM	424	if (!new_op)
	425	return -EINVAL;
	426
8bb8aefd YL	427	new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn;
8bb8aefd YL	428	new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn;
274dcf55 MM	429
	430	strncpy(new_op->upcall.req.rename.d_old_name,
	431	old_dentry->d_name.name,
47b4948f	432	ORANGEFS_NAME_MAX);
274dcf55 MM	433	strncpy(new_op->upcall.req.rename.d_new_name,
274dcf55 MM	434	new_dentry->d_name.name,
47b4948f	435	ORANGEFS_NAME_MAX);
274dcf55 MM	436
274dcf55 MM	437	ret = service_operation(new_op,
8bb8aefd	438	"orangefs_rename",
274dcf55 MM	439	get_interruptible_flag(old_dentry->d_inode));
	440
	441	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	442	"orangefs_rename: got downcall status %d\n",
274dcf55 MM	443	ret);
	444
	445	if (new_dentry->d_inode)
	446	new_dentry->d_inode->i_ctime = CURRENT_TIME;
	447
	448	op_release(new_op);
	449	return ret;
	450	}
	451
8bb8aefd	452	/* ORANGEFS implementation of VFS inode operations for directories */
6f3fc107	453	const struct inode_operations orangefs_dir_inode_operations = {
8bb8aefd YL	454	.lookup = orangefs_lookup,
	455	.get_acl = orangefs_get_acl,
	456	.set_acl = orangefs_set_acl,
	457	.create = orangefs_create,
	458	.unlink = orangefs_unlink,
	459	.symlink = orangefs_symlink,
	460	.mkdir = orangefs_mkdir,
	461	.rmdir = orangefs_unlink,
	462	.rename = orangefs_rename,
	463	.setattr = orangefs_setattr,
	464	.getattr = orangefs_getattr,
274dcf55 MM	465	.setxattr = generic_setxattr,
	466	.getxattr = generic_getxattr,
	467	.removexattr = generic_removexattr,
8bb8aefd	468	.listxattr = orangefs_listxattr,
933287da	469	.permission = orangefs_permission,
274dcf55	470	};