[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: %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;
	ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;

	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;
	ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;

	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;
	ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;

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

	/*
	 * NOTE: we have no good way to keep nlink consistent for directories
	 * across clients; keep constant at 1.
	 */
	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;
68a24a6c	77	ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
274dcf55 MM	78
274dcf55 MM	79	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	80	"%s: dentry instantiated for %pd\n",
5253487e	81	__func__,
f66debf1	82	dentry);
274dcf55 MM	83
274dcf55 MM	84	SetMtimeFlag(parent);
c2050a45	85	dir->i_mtime = dir->i_ctime = current_time(dir);
274dcf55 MM	86	mark_inode_dirty_sync(dir);
	87	ret = 0;
	88	out:
	89	op_release(new_op);
5253487e	90	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	91	"%s: %pd: returning %d\n",
5253487e	92	__func__,
f66debf1	93	dentry,
5253487e	94	ret);
274dcf55 MM	95	return ret;
	96	}
	97
	98	/*
	99	* Attempt to resolve an object name (dentry->d_name), parent handle, and
	100	* fsid into a handle for the object.
	101	*/
8bb8aefd	102	static struct dentry orangefs_lookup(struct inode dir, struct dentry *dentry,
274dcf55 MM	103	unsigned int flags)
274dcf55 MM	104	{
8bb8aefd YL	105	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	106	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	107	struct inode *inode;
	108	struct dentry *res;
	109	int ret = -EINVAL;
	110
	111	/*
	112	* in theory we could skip a lookup here (if the intent is to
	113	* create) in order to avoid a potentially failed lookup, but
	114	* leaving it in can skip a valid lookup and try to create a file
	115	* that already exists (e.g. the vfs already handles checking for
	116	* -EEXIST on O_EXCL opens, which is broken if we skip this lookup
	117	* in the create path)
	118	*/
f66debf1 AV	119	gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %pd\n",
f66debf1 AV	120	__func__, dentry);
274dcf55	121
47b4948f	122	if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1))
274dcf55 MM	123	return ERR_PTR(-ENAMETOOLONG);
274dcf55 MM	124
8bb8aefd	125	new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP);
274dcf55 MM	126	if (!new_op)
	127	return ERR_PTR(-ENOMEM);
	128
7cec28e9	129	new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW;
274dcf55 MM	130
	131	gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n",
	132	__FILE__,
	133	__func__,
	134	__LINE__,
	135	&parent->refn.khandle);
	136	new_op->upcall.req.lookup.parent_refn = parent->refn;
	137
	138	strncpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name,
47b4948f	139	ORANGEFS_NAME_MAX);
274dcf55 MM	140
274dcf55 MM	141	gossip_debug(GOSSIP_NAME_DEBUG,
6ceaf781	142	"%s: doing lookup on %s under %pU,%d\n",
274dcf55 MM	143	__func__,
	144	new_op->upcall.req.lookup.d_name,
	145	&new_op->upcall.req.lookup.parent_refn.khandle,
6ceaf781	146	new_op->upcall.req.lookup.parent_refn.fs_id);
274dcf55 MM	147
	148	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	149
	150	gossip_debug(GOSSIP_NAME_DEBUG,
	151	"Lookup Got %pU, fsid %d (ret=%d)\n",
	152	&new_op->downcall.resp.lookup.refn.khandle,
	153	new_op->downcall.resp.lookup.refn.fs_id,
	154	ret);
	155
	156	if (ret < 0) {
	157	if (ret == -ENOENT) {
	158	/*
	159	* if no inode was found, add a negative dentry to
	160	* dcache anyway; if we don't, we don't hold expected
	161	* lookup semantics and we most noticeably break
	162	* during directory renames.
	163	*
	164	* however, if the operation failed or exited, do not
	165	* add the dentry (e.g. in the case that a touch is
	166	* issued on a file that already exists that was
	167	* interrupted during this lookup -- no need to add
	168	* another negative dentry for an existing file)
	169	*/
	170
	171	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	172	"orangefs_lookup: Adding negative dentry "
f66debf1	173	"%p for %pd\n",
274dcf55	174	dentry,
f66debf1	175	dentry);
274dcf55 MM	176
	177	d_add(dentry, NULL);
	178	res = NULL;
	179	goto out;
	180	}
	181
	182	/* must be a non-recoverable error */
	183	res = ERR_PTR(ret);
	184	goto out;
	185	}
	186
804b1737	187	orangefs_set_timeout(dentry);
31b7c1ab	188
8bb8aefd	189	inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
274dcf55 MM	190	if (IS_ERR(inode)) {
	191	gossip_debug(GOSSIP_NAME_DEBUG,
	192	"error %ld from iget\n", PTR_ERR(inode));
	193	res = ERR_CAST(inode);
	194	goto out;
	195	}
	196
	197	gossip_debug(GOSSIP_NAME_DEBUG,
	198	"%s:%s:%d "
	199	"Found good inode [%lu] with count [%d]\n",
	200	__FILE__,
	201	__func__,
	202	__LINE__,
	203	inode->i_ino,
	204	(int)atomic_read(&inode->i_count));
	205
	206	/* update dentry/inode pair into dcache */
	207	res = d_splice_alias(inode, dentry);
	208
	209	gossip_debug(GOSSIP_NAME_DEBUG,
	210	"Lookup success (inode ct = %d)\n",
	211	(int)atomic_read(&inode->i_count));
	212	out:
	213	op_release(new_op);
	214	return res;
	215	}
	216
	217	/* return 0 on success; non-zero otherwise */
8bb8aefd	218	static int orangefs_unlink(struct inode dir, struct dentry dentry)
274dcf55 MM	219	{
274dcf55 MM	220	struct inode *inode = dentry->d_inode;
8bb8aefd YL	221	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	222	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	223	int ret;
	224
	225	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	226	"%s: called on %pd\n"
274dcf55 MM	227	" (inode %pU): Parent is %pU \| fs_id %d\n",
274dcf55 MM	228	__func__,
f66debf1	229	dentry,
274dcf55 MM	230	get_khandle_from_ino(inode),
	231	&parent->refn.khandle,
	232	parent->refn.fs_id);
	233
8bb8aefd	234	new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE);
274dcf55 MM	235	if (!new_op)
	236	return -ENOMEM;
	237
	238	new_op->upcall.req.remove.parent_refn = parent->refn;
	239	strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name,
47b4948f	240	ORANGEFS_NAME_MAX);
274dcf55	241
8bb8aefd	242	ret = service_operation(new_op, "orangefs_unlink",
274dcf55 MM	243	get_interruptible_flag(inode));
274dcf55 MM	244
5253487e MM	245	gossip_debug(GOSSIP_NAME_DEBUG,
	246	"%s: service_operation returned:%d:\n",
	247	__func__,
	248	ret);
	249
274dcf55 MM	250	op_release(new_op);
	251
	252	if (!ret) {
	253	drop_nlink(inode);
	254
	255	SetMtimeFlag(parent);
c2050a45	256	dir->i_mtime = dir->i_ctime = current_time(dir);
274dcf55 MM	257	mark_inode_dirty_sync(dir);
	258	}
	259	return ret;
	260	}
	261
8bb8aefd	262	static int orangefs_symlink(struct inode *dir,
274dcf55 MM	263	struct dentry *dentry,
	264	const char *symname)
	265	{
8bb8aefd YL	266	struct orangefs_inode_s *parent = ORANGEFS_I(dir);
8bb8aefd YL	267	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	268	struct inode *inode;
	269	int mode = 755;
	270	int ret;
	271
	272	gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__);
	273
	274	if (!symname)
	275	return -EINVAL;
	276
c62da585 MB	277	if (strlen(symname)+1 > ORANGEFS_NAME_MAX)
	278	return -ENAMETOOLONG;
	279
8bb8aefd	280	new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK);
274dcf55 MM	281	if (!new_op)
	282	return -ENOMEM;
	283
	284	new_op->upcall.req.sym.parent_refn = parent->refn;
	285
	286	fill_default_sys_attrs(new_op->upcall.req.sym.attributes,
8bb8aefd	287	ORANGEFS_TYPE_SYMLINK,
274dcf55 MM	288	mode);
	289
	290	strncpy(new_op->upcall.req.sym.entry_name,
	291	dentry->d_name.name,
47b4948f MB	292	ORANGEFS_NAME_MAX);
47b4948f MB	293	strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX);
274dcf55 MM	294
	295	ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
	296
	297	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	298	"Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
274dcf55 MM	299	&new_op->downcall.resp.sym.refn.khandle,
	300	new_op->downcall.resp.sym.refn.fs_id, ret);
	301
	302	if (ret < 0) {
	303	gossip_debug(GOSSIP_NAME_DEBUG,
	304	"%s: failed with error code %d\n",
	305	__func__, ret);
	306	goto out;
	307	}
	308
8bb8aefd	309	inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK \| mode, 0,
274dcf55 MM	310	&new_op->downcall.resp.sym.refn);
	311	if (IS_ERR(inode)) {
	312	gossip_err
8bb8aefd	313	("*** Failed to allocate orangefs symlink inode\n");
274dcf55 MM	314	ret = PTR_ERR(inode);
	315	goto out;
	316	}
	317
	318	gossip_debug(GOSSIP_NAME_DEBUG,
	319	"Assigned symlink inode new number of %pU\n",
	320	get_khandle_from_ino(inode));
	321
	322	d_instantiate(dentry, inode);
	323	unlock_new_inode(inode);
804b1737	324	orangefs_set_timeout(dentry);
8bbb20a8	325	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
68a24a6c	326	ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
274dcf55 MM	327
274dcf55 MM	328	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	329	"Inode (Symlink) %pU -> %pd\n",
274dcf55	330	get_khandle_from_ino(inode),
f66debf1	331	dentry);
274dcf55 MM	332
274dcf55 MM	333	SetMtimeFlag(parent);
c2050a45	334	dir->i_mtime = dir->i_ctime = current_time(dir);
274dcf55 MM	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);
804b1737	389	orangefs_set_timeout(dentry);
8bbb20a8	390	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
68a24a6c	391	ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
274dcf55 MM	392
274dcf55 MM	393	gossip_debug(GOSSIP_NAME_DEBUG,
f66debf1	394	"Inode (Directory) %pU -> %pd\n",
274dcf55	395	get_khandle_from_ino(inode),
f66debf1	396	dentry);
274dcf55 MM	397
	398	/*
	399	* NOTE: we have no good way to keep nlink consistent for directories
	400	* across clients; keep constant at 1.
	401	*/
	402	SetMtimeFlag(parent);
c2050a45	403	dir->i_mtime = dir->i_ctime = current_time(dir);
274dcf55 MM	404	mark_inode_dirty_sync(dir);
	405	out:
	406	op_release(new_op);
	407	return ret;
	408	}
	409
8bb8aefd	410	static int orangefs_rename(struct inode *old_dir,
274dcf55 MM	411	struct dentry *old_dentry,
274dcf55 MM	412	struct inode *new_dir,
1cd66c93 MS	413	struct dentry *new_dentry,
1cd66c93 MS	414	unsigned int flags)
274dcf55	415	{
8bb8aefd	416	struct orangefs_kernel_op_s *new_op;
274dcf55 MM	417	int ret;
274dcf55 MM	418
1cd66c93 MS	419	if (flags)
	420	return -EINVAL;
	421
274dcf55	422	gossip_debug(GOSSIP_NAME_DEBUG,
96b0cffb AV	423	"orangefs_rename: called (%pd2 => %pd2) ct=%d\n",
96b0cffb AV	424	old_dentry, new_dentry, d_count(new_dentry));
274dcf55	425
8bbb20a8	426	ORANGEFS_I(new_dentry->d_parent->d_inode)->getattr_time = jiffies - 1;
71680c18	427
8bb8aefd	428	new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
274dcf55 MM	429	if (!new_op)
	430	return -EINVAL;
	431
8bb8aefd YL	432	new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn;
8bb8aefd YL	433	new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn;
274dcf55 MM	434
	435	strncpy(new_op->upcall.req.rename.d_old_name,
	436	old_dentry->d_name.name,
47b4948f	437	ORANGEFS_NAME_MAX);
274dcf55 MM	438	strncpy(new_op->upcall.req.rename.d_new_name,
274dcf55 MM	439	new_dentry->d_name.name,
47b4948f	440	ORANGEFS_NAME_MAX);
274dcf55 MM	441
274dcf55 MM	442	ret = service_operation(new_op,
8bb8aefd	443	"orangefs_rename",
274dcf55 MM	444	get_interruptible_flag(old_dentry->d_inode));
	445
	446	gossip_debug(GOSSIP_NAME_DEBUG,
8bb8aefd	447	"orangefs_rename: got downcall status %d\n",
274dcf55 MM	448	ret);
	449
	450	if (new_dentry->d_inode)
c2050a45	451	new_dentry->d_inode->i_ctime = current_time(new_dentry->d_inode);
274dcf55 MM	452
	453	op_release(new_op);
	454	return ret;
	455	}
	456
8bb8aefd	457	/* ORANGEFS implementation of VFS inode operations for directories */
6f3fc107	458	const struct inode_operations orangefs_dir_inode_operations = {
8bb8aefd YL	459	.lookup = orangefs_lookup,
	460	.get_acl = orangefs_get_acl,
	461	.set_acl = orangefs_set_acl,
	462	.create = orangefs_create,
	463	.unlink = orangefs_unlink,
	464	.symlink = orangefs_symlink,
	465	.mkdir = orangefs_mkdir,
	466	.rmdir = orangefs_unlink,
	467	.rename = orangefs_rename,
	468	.setattr = orangefs_setattr,
	469	.getattr = orangefs_getattr,
8bb8aefd	470	.listxattr = orangefs_listxattr,
933287da	471	.permission = orangefs_permission,
274dcf55	472	};