[linux-2.6-block.git] / fs / ntfs3 / namei.c

// SPDX-License-Identifier: GPL-2.0
/*
 *
 * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
 *
 */

#include <linux/fs.h>
#include <linux/nls.h>

#include "debug.h"
#include "ntfs.h"
#include "ntfs_fs.h"

/*
 * fill_name_de - Format NTFS_DE in @buf.
 */
int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name,
		 const struct cpu_str *uni)
{
	int err;
	struct NTFS_DE *e = buf;
	u16 data_size;
	struct ATTR_FILE_NAME *fname = (struct ATTR_FILE_NAME *)(e + 1);

#ifndef CONFIG_NTFS3_64BIT_CLUSTER
	e->ref.high = fname->home.high = 0;
#endif
	if (uni) {
#ifdef __BIG_ENDIAN
		int ulen = uni->len;
		__le16 *uname = fname->name;
		const u16 *name_cpu = uni->name;

		while (ulen--)
			*uname++ = cpu_to_le16(*name_cpu++);
#else
		memcpy(fname->name, uni->name, uni->len * sizeof(u16));
#endif
		fname->name_len = uni->len;

	} else {
		/* Convert input string to unicode. */
		err = ntfs_nls_to_utf16(sbi, name->name, name->len,
					(struct cpu_str *)&fname->name_len,
					NTFS_NAME_LEN, UTF16_LITTLE_ENDIAN);
		if (err < 0)
			return err;
	}

	fname->type = FILE_NAME_POSIX;
	data_size = fname_full_size(fname);

	e->size = cpu_to_le16(ALIGN(data_size, 8) + sizeof(struct NTFS_DE));
	e->key_size = cpu_to_le16(data_size);
	e->flags = 0;
	e->res = 0;

	return 0;
}

/*
 * ntfs_lookup - inode_operations::lookup
 */
static struct dentry *ntfs_lookup(struct inode *dir, struct dentry *dentry,
				  u32 flags)
{
	struct ntfs_inode *ni = ntfs_i(dir);
	struct cpu_str *uni = __getname();
	struct inode *inode;
	int err;

	if (!uni)
		inode = ERR_PTR(-ENOMEM);
	else {
		err = ntfs_nls_to_utf16(ni->mi.sbi, dentry->d_name.name,
					dentry->d_name.len, uni, NTFS_NAME_LEN,
					UTF16_HOST_ENDIAN);
		if (err < 0)
			inode = ERR_PTR(err);
		else {
			ni_lock(ni);
			inode = dir_search_u(dir, uni, NULL);
			ni_unlock(ni);
		}
		__putname(uni);
	}

	return d_splice_alias(inode, dentry);
}

/*
 * ntfs_create - inode_operations::create
 */
static int ntfs_create(struct user_namespace *mnt_userns, struct inode *dir,
		       struct dentry *dentry, umode_t mode, bool excl)
{
	struct inode *inode;

	inode = ntfs_create_inode(mnt_userns, dir, dentry, NULL, S_IFREG | mode,
				  0, NULL, 0, NULL);

	return IS_ERR(inode) ? PTR_ERR(inode) : 0;
}

/*
 * ntfs_mknod
 *
 * inode_operations::mknod
 */
static int ntfs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
		      struct dentry *dentry, umode_t mode, dev_t rdev)
{
	struct inode *inode;

	inode = ntfs_create_inode(mnt_userns, dir, dentry, NULL, mode, rdev,
				  NULL, 0, NULL);

	return IS_ERR(inode) ? PTR_ERR(inode) : 0;
}

/*
 * ntfs_link - inode_operations::link
 */
static int ntfs_link(struct dentry *ode, struct inode *dir, struct dentry *de)
{
	int err;
	struct inode *inode = d_inode(ode);
	struct ntfs_inode *ni = ntfs_i(inode);

	if (S_ISDIR(inode->i_mode))
		return -EPERM;

	if (inode->i_nlink >= NTFS_LINK_MAX)
		return -EMLINK;

	ni_lock_dir(ntfs_i(dir));
	if (inode != dir)
		ni_lock(ni);

	inc_nlink(inode);
	ihold(inode);

	err = ntfs_link_inode(inode, de);

	if (!err) {
		dir->i_ctime = dir->i_mtime = inode->i_ctime =
			current_time(dir);
		mark_inode_dirty(inode);
		mark_inode_dirty(dir);
		d_instantiate(de, inode);
	} else {
		drop_nlink(inode);
		iput(inode);
	}

	if (inode != dir)
		ni_unlock(ni);
	ni_unlock(ntfs_i(dir));

	return err;
}

/*
 * ntfs_unlink - inode_operations::unlink
 */
static int ntfs_unlink(struct inode *dir, struct dentry *dentry)
{
	struct ntfs_inode *ni = ntfs_i(dir);
	int err;

	ni_lock_dir(ni);

	err = ntfs_unlink_inode(dir, dentry);

	ni_unlock(ni);

	return err;
}

/*
 * ntfs_symlink - inode_operations::symlink
 */
static int ntfs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
			struct dentry *dentry, const char *symname)
{
	u32 size = strlen(symname);
	struct inode *inode;

	inode = ntfs_create_inode(mnt_userns, dir, dentry, NULL, S_IFLNK | 0777,
				  0, symname, size, NULL);

	return IS_ERR(inode) ? PTR_ERR(inode) : 0;
}

/*
 * ntfs_mkdir- inode_operations::mkdir
 */
static int ntfs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
		      struct dentry *dentry, umode_t mode)
{
	struct inode *inode;

	inode = ntfs_create_inode(mnt_userns, dir, dentry, NULL, S_IFDIR | mode,
				  0, NULL, 0, NULL);

	return IS_ERR(inode) ? PTR_ERR(inode) : 0;
}

/*
 * ntfs_rmdir - inode_operations::rm_dir
 */
static int ntfs_rmdir(struct inode *dir, struct dentry *dentry)
{
	struct ntfs_inode *ni = ntfs_i(dir);
	int err;

	ni_lock_dir(ni);

	err = ntfs_unlink_inode(dir, dentry);

	ni_unlock(ni);

	return err;
}

/*
 * ntfs_rename - inode_operations::rename
 */
static int ntfs_rename(struct user_namespace *mnt_userns, struct inode *dir,
		       struct dentry *dentry, struct inode *new_dir,
		       struct dentry *new_dentry, u32 flags)
{
	int err;
	struct super_block *sb = dir->i_sb;
	struct ntfs_sb_info *sbi = sb->s_fs_info;
	struct ntfs_inode *dir_ni = ntfs_i(dir);
	struct ntfs_inode *new_dir_ni = ntfs_i(new_dir);
	struct inode *inode = d_inode(dentry);
	struct ntfs_inode *ni = ntfs_i(inode);
	struct inode *new_inode = d_inode(new_dentry);
	struct NTFS_DE *de, *new_de;
	bool is_same, is_bad;
	/*
	 * de		- memory of PATH_MAX bytes:
	 * [0-1024)	- original name (dentry->d_name)
	 * [1024-2048)	- paired to original name, usually DOS variant of dentry->d_name
	 * [2048-3072)	- new name (new_dentry->d_name)
	 */
	static_assert(SIZEOF_ATTRIBUTE_FILENAME_MAX + SIZEOF_RESIDENT < 1024);
	static_assert(SIZEOF_ATTRIBUTE_FILENAME_MAX + sizeof(struct NTFS_DE) <
		      1024);
	static_assert(PATH_MAX >= 4 * 1024);

	if (flags & ~RENAME_NOREPLACE)
		return -EINVAL;

	is_same = dentry->d_name.len == new_dentry->d_name.len &&
		  !memcmp(dentry->d_name.name, new_dentry->d_name.name,
			  dentry->d_name.len);

	if (is_same && dir == new_dir) {
		/* Nothing to do. */
		return 0;
	}

	if (ntfs_is_meta_file(sbi, inode->i_ino)) {
		/* Should we print an error? */
		return -EINVAL;
	}

	if (new_inode) {
		/* Target name exists. Unlink it. */
		dget(new_dentry);
		ni_lock_dir(new_dir_ni);
		err = ntfs_unlink_inode(new_dir, new_dentry);
		ni_unlock(new_dir_ni);
		dput(new_dentry);
		if (err)
			return err;
	}

	/* Allocate PATH_MAX bytes. */
	de = __getname();
	if (!de)
		return -ENOMEM;

	/* Translate dentry->d_name into unicode form. */
	err = fill_name_de(sbi, de, &dentry->d_name, NULL);
	if (err < 0)
		goto out;

	if (is_same) {
		/* Reuse 'de'. */
		new_de = de;
	} else {
		/* Translate new_dentry->d_name into unicode form. */
		new_de = Add2Ptr(de, 2048);
		err = fill_name_de(sbi, new_de, &new_dentry->d_name, NULL);
		if (err < 0)
			goto out;
	}

	ni_lock_dir(dir_ni);
	ni_lock(ni);

	is_bad = false;
	err = ni_rename(dir_ni, new_dir_ni, ni, de, new_de, &is_bad);
	if (is_bad) {
		/* Restore after failed rename failed too. */
		make_bad_inode(inode);
		ntfs_inode_err(inode, "failed to undo rename");
		ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
	} else if (!err) {
		inode->i_ctime = dir->i_ctime = dir->i_mtime =
			current_time(dir);
		mark_inode_dirty(inode);
		mark_inode_dirty(dir);
		if (dir != new_dir) {
			new_dir->i_mtime = new_dir->i_ctime = dir->i_ctime;
			mark_inode_dirty(new_dir);
		}

		if (IS_DIRSYNC(dir))
			ntfs_sync_inode(dir);

		if (IS_DIRSYNC(new_dir))
			ntfs_sync_inode(inode);
	}

	ni_unlock(ni);
	ni_unlock(dir_ni);
out:
	__putname(de);
	return err;
}

struct dentry *ntfs3_get_parent(struct dentry *child)
{
	struct inode *inode = d_inode(child);
	struct ntfs_inode *ni = ntfs_i(inode);

	struct ATTR_LIST_ENTRY *le = NULL;
	struct ATTRIB *attr = NULL;
	struct ATTR_FILE_NAME *fname;

	while ((attr = ni_find_attr(ni, attr, &le, ATTR_NAME, NULL, 0, NULL,
				    NULL))) {
		fname = resident_data_ex(attr, SIZEOF_ATTRIBUTE_FILENAME);
		if (!fname)
			continue;

		return d_obtain_alias(
			ntfs_iget5(inode->i_sb, &fname->home, NULL));
	}

	return ERR_PTR(-ENOENT);
}

// clang-format off
const struct inode_operations ntfs_dir_inode_operations = {
	.lookup		= ntfs_lookup,
	.create		= ntfs_create,
	.link		= ntfs_link,
	.unlink		= ntfs_unlink,
	.symlink	= ntfs_symlink,
	.mkdir		= ntfs_mkdir,
	.rmdir		= ntfs_rmdir,
	.mknod		= ntfs_mknod,
	.rename		= ntfs_rename,
	.permission	= ntfs_permission,
	.get_acl	= ntfs_get_acl,
	.set_acl	= ntfs_set_acl,
	.setattr	= ntfs3_setattr,
	.getattr	= ntfs_getattr,
	.listxattr	= ntfs_listxattr,
	.fiemap		= ntfs_fiemap,
};

const struct inode_operations ntfs_special_inode_operations = {
	.setattr	= ntfs3_setattr,
	.getattr	= ntfs_getattr,
	.listxattr	= ntfs_listxattr,
	.get_acl	= ntfs_get_acl,
	.set_acl	= ntfs_set_acl,
};
// clang-format on
Commit	Line	Data
4342306f KK	1	// SPDX-License-Identifier: GPL-2.0
	2	/*
	3	*
	4	* Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
	5	*
	6	*/
	7
4342306f	8	#include <linux/fs.h>
4342306f KK	9	#include <linux/nls.h>
	10
	11	#include "debug.h"
	12	#include "ntfs.h"
	13	#include "ntfs_fs.h"
	14
	15	/*
e8b8e97f	16	* fill_name_de - Format NTFS_DE in @buf.
4342306f KK	17	*/
	18	int fill_name_de(struct ntfs_sb_info sbi, void buf, const struct qstr *name,
	19	const struct cpu_str *uni)
	20	{
	21	int err;
	22	struct NTFS_DE *e = buf;
	23	u16 data_size;
	24	struct ATTR_FILE_NAME fname = (struct ATTR_FILE_NAME )(e + 1);
	25
	26	#ifndef CONFIG_NTFS3_64BIT_CLUSTER
	27	e->ref.high = fname->home.high = 0;
	28	#endif
	29	if (uni) {
	30	#ifdef __BIG_ENDIAN
	31	int ulen = uni->len;
	32	__le16 *uname = fname->name;
	33	const u16 *name_cpu = uni->name;
	34
	35	while (ulen--)
	36	uname++ = cpu_to_le16(name_cpu++);
	37	#else
	38	memcpy(fname->name, uni->name, uni->len * sizeof(u16));
	39	#endif
	40	fname->name_len = uni->len;
	41
	42	} else {
e8b8e97f	43	/* Convert input string to unicode. */
4342306f KK	44	err = ntfs_nls_to_utf16(sbi, name->name, name->len,
	45	(struct cpu_str *)&fname->name_len,
	46	NTFS_NAME_LEN, UTF16_LITTLE_ENDIAN);
	47	if (err < 0)
	48	return err;
	49	}
	50
	51	fname->type = FILE_NAME_POSIX;
	52	data_size = fname_full_size(fname);
	53
fa3cacf5	54	e->size = cpu_to_le16(ALIGN(data_size, 8) + sizeof(struct NTFS_DE));
4342306f KK	55	e->key_size = cpu_to_le16(data_size);
	56	e->flags = 0;
	57	e->res = 0;
	58
	59	return 0;
	60	}
	61
	62	/*
e8b8e97f	63	* ntfs_lookup - inode_operations::lookup
4342306f KK	64	*/
	65	static struct dentry ntfs_lookup(struct inode dir, struct dentry *dentry,
	66	u32 flags)
	67	{
	68	struct ntfs_inode *ni = ntfs_i(dir);
	69	struct cpu_str *uni = __getname();
	70	struct inode *inode;
	71	int err;
	72
	73	if (!uni)
	74	inode = ERR_PTR(-ENOMEM);
	75	else {
	76	err = ntfs_nls_to_utf16(ni->mi.sbi, dentry->d_name.name,
	77	dentry->d_name.len, uni, NTFS_NAME_LEN,
	78	UTF16_HOST_ENDIAN);
	79	if (err < 0)
	80	inode = ERR_PTR(err);
	81	else {
	82	ni_lock(ni);
	83	inode = dir_search_u(dir, uni, NULL);
	84	ni_unlock(ni);
	85	}
	86	__putname(uni);
	87	}
	88
	89	return d_splice_alias(inode, dentry);
	90	}
	91
	92	/*
e8b8e97f	93	* ntfs_create - inode_operations::create
4342306f KK	94	*/
	95	static int ntfs_create(struct user_namespace mnt_userns, struct inode dir,
	96	struct dentry *dentry, umode_t mode, bool excl)
	97	{
4342306f KK	98	struct inode *inode;
4342306f KK	99
4342306f KK	100	inode = ntfs_create_inode(mnt_userns, dir, dentry, NULL, S_IFREG \| mode,
	101	0, NULL, 0, NULL);
	102
4342306f KK	103	return IS_ERR(inode) ? PTR_ERR(inode) : 0;
	104	}
	105
	106	/*
	107	* ntfs_mknod
	108	*
	109	* inode_operations::mknod
	110	*/
	111	static int ntfs_mknod(struct user_namespace mnt_userns, struct inode dir,
	112	struct dentry *dentry, umode_t mode, dev_t rdev)
	113	{
4342306f KK	114	struct inode *inode;
4342306f KK	115
4342306f KK	116	inode = ntfs_create_inode(mnt_userns, dir, dentry, NULL, mode, rdev,
	117	NULL, 0, NULL);
	118
4342306f KK	119	return IS_ERR(inode) ? PTR_ERR(inode) : 0;
	120	}
	121
	122	/*
e8b8e97f	123	* ntfs_link - inode_operations::link
4342306f KK	124	*/
	125	static int ntfs_link(struct dentry ode, struct inode dir, struct dentry *de)
	126	{
	127	int err;
	128	struct inode *inode = d_inode(ode);
	129	struct ntfs_inode *ni = ntfs_i(inode);
	130
	131	if (S_ISDIR(inode->i_mode))
	132	return -EPERM;
	133
	134	if (inode->i_nlink >= NTFS_LINK_MAX)
	135	return -EMLINK;
	136
	137	ni_lock_dir(ntfs_i(dir));
	138	if (inode != dir)
	139	ni_lock(ni);
	140
4342306f KK	141	inc_nlink(inode);
	142	ihold(inode);
	143
	144	err = ntfs_link_inode(inode, de);
78ab59fe	145
4342306f	146	if (!err) {
78ab59fe KK	147	dir->i_ctime = dir->i_mtime = inode->i_ctime =
78ab59fe KK	148	current_time(dir);
4342306f KK	149	mark_inode_dirty(inode);
	150	mark_inode_dirty(dir);
	151	d_instantiate(de, inode);
	152	} else {
	153	drop_nlink(inode);
	154	iput(inode);
	155	}
	156
	157	if (inode != dir)
	158	ni_unlock(ni);
	159	ni_unlock(ntfs_i(dir));
	160
	161	return err;
	162	}
	163
	164	/*
e8b8e97f	165	* ntfs_unlink - inode_operations::unlink
4342306f KK	166	*/
	167	static int ntfs_unlink(struct inode dir, struct dentry dentry)
	168	{
	169	struct ntfs_inode *ni = ntfs_i(dir);
	170	int err;
	171
	172	ni_lock_dir(ni);
	173
	174	err = ntfs_unlink_inode(dir, dentry);
	175
	176	ni_unlock(ni);
	177
	178	return err;
	179	}
	180
	181	/*
e8b8e97f	182	* ntfs_symlink - inode_operations::symlink
4342306f KK	183	*/
	184	static int ntfs_symlink(struct user_namespace mnt_userns, struct inode dir,
	185	struct dentry dentry, const char symname)
	186	{
	187	u32 size = strlen(symname);
	188	struct inode *inode;
4342306f KK	189
	190	inode = ntfs_create_inode(mnt_userns, dir, dentry, NULL, S_IFLNK \| 0777,
	191	0, symname, size, NULL);
	192
4342306f KK	193	return IS_ERR(inode) ? PTR_ERR(inode) : 0;
	194	}
	195
	196	/*
e8b8e97f	197	* ntfs_mkdir- inode_operations::mkdir
4342306f KK	198	*/
	199	static int ntfs_mkdir(struct user_namespace mnt_userns, struct inode dir,
	200	struct dentry *dentry, umode_t mode)
	201	{
	202	struct inode *inode;
4342306f KK	203
	204	inode = ntfs_create_inode(mnt_userns, dir, dentry, NULL, S_IFDIR \| mode,
	205	0, NULL, 0, NULL);
	206
4342306f KK	207	return IS_ERR(inode) ? PTR_ERR(inode) : 0;
	208	}
	209
	210	/*
e8b8e97f	211	* ntfs_rmdir - inode_operations::rm_dir
4342306f KK	212	*/
	213	static int ntfs_rmdir(struct inode dir, struct dentry dentry)
	214	{
	215	struct ntfs_inode *ni = ntfs_i(dir);
	216	int err;
	217
	218	ni_lock_dir(ni);
	219
	220	err = ntfs_unlink_inode(dir, dentry);
	221
	222	ni_unlock(ni);
	223
	224	return err;
	225	}
	226
	227	/*
e8b8e97f	228	* ntfs_rename - inode_operations::rename
4342306f	229	*/
78ab59fe KK	230	static int ntfs_rename(struct user_namespace mnt_userns, struct inode dir,
78ab59fe KK	231	struct dentry dentry, struct inode new_dir,
4342306f KK	232	struct dentry *new_dentry, u32 flags)
	233	{
	234	int err;
78ab59fe	235	struct super_block *sb = dir->i_sb;
4342306f	236	struct ntfs_sb_info *sbi = sb->s_fs_info;
78ab59fe	237	struct ntfs_inode *dir_ni = ntfs_i(dir);
4342306f	238	struct ntfs_inode *new_dir_ni = ntfs_i(new_dir);
78ab59fe KK	239	struct inode *inode = d_inode(dentry);
	240	struct ntfs_inode *ni = ntfs_i(inode);
	241	struct inode *new_inode = d_inode(new_dentry);
	242	struct NTFS_DE de, new_de;
	243	bool is_same, is_bad;
	244	/*
	245	* de - memory of PATH_MAX bytes:
	246	* [0-1024) - original name (dentry->d_name)
	247	* [1024-2048) - paired to original name, usually DOS variant of dentry->d_name
	248	* [2048-3072) - new name (new_dentry->d_name)
	249	*/
4342306f KK	250	static_assert(SIZEOF_ATTRIBUTE_FILENAME_MAX + SIZEOF_RESIDENT < 1024);
	251	static_assert(SIZEOF_ATTRIBUTE_FILENAME_MAX + sizeof(struct NTFS_DE) <
	252	1024);
	253	static_assert(PATH_MAX >= 4 * 1024);
	254
	255	if (flags & ~RENAME_NOREPLACE)
	256	return -EINVAL;
	257
78ab59fe KK	258	is_same = dentry->d_name.len == new_dentry->d_name.len &&
	259	!memcmp(dentry->d_name.name, new_dentry->d_name.name,
	260	dentry->d_name.len);
4342306f	261
78ab59fe	262	if (is_same && dir == new_dir) {
e8b8e97f	263	/* Nothing to do. */
78ab59fe	264	return 0;
4342306f KK	265	}
4342306f KK	266
78ab59fe KK	267	if (ntfs_is_meta_file(sbi, inode->i_ino)) {
	268	/* Should we print an error? */
	269	return -EINVAL;
4342306f KK	270	}
	271
	272	if (new_inode) {
e8b8e97f	273	/* Target name exists. Unlink it. */
4342306f KK	274	dget(new_dentry);
	275	ni_lock_dir(new_dir_ni);
	276	err = ntfs_unlink_inode(new_dir, new_dentry);
	277	ni_unlock(new_dir_ni);
	278	dput(new_dentry);
	279	if (err)
78ab59fe	280	return err;
4342306f KK	281	}
4342306f KK	282
e8b8e97f	283	/* Allocate PATH_MAX bytes. */
78ab59fe KK	284	de = __getname();
	285	if (!de)
	286	return -ENOMEM;
4342306f	287
78ab59fe KK	288	/* Translate dentry->d_name into unicode form. */
78ab59fe KK	289	err = fill_name_de(sbi, de, &dentry->d_name, NULL);
4342306f	290	if (err < 0)
78ab59fe	291	goto out;
4342306f KK	292
4342306f KK	293	if (is_same) {
78ab59fe KK	294	/* Reuse 'de'. */
78ab59fe KK	295	new_de = de;
4342306f	296	} else {
78ab59fe KK	297	/* Translate new_dentry->d_name into unicode form. */
78ab59fe KK	298	new_de = Add2Ptr(de, 2048);
4342306f KK	299	err = fill_name_de(sbi, new_de, &new_dentry->d_name, NULL);
4342306f KK	300	if (err < 0)
78ab59fe	301	goto out;
4342306f KK	302	}
4342306f KK	303
78ab59fe KK	304	ni_lock_dir(dir_ni);
	305	ni_lock(ni);
	306
	307	is_bad = false;
	308	err = ni_rename(dir_ni, new_dir_ni, ni, de, new_de, &is_bad);
	309	if (is_bad) {
	310	/* Restore after failed rename failed too. */
	311	make_bad_inode(inode);
	312	ntfs_inode_err(inode, "failed to undo rename");
	313	ntfs_set_state(sbi, NTFS_DIRTY_ERROR);
	314	} else if (!err) {
	315	inode->i_ctime = dir->i_ctime = dir->i_mtime =
	316	current_time(dir);
	317	mark_inode_dirty(inode);
	318	mark_inode_dirty(dir);
	319	if (dir != new_dir) {
	320	new_dir->i_mtime = new_dir->i_ctime = dir->i_ctime;
	321	mark_inode_dirty(new_dir);
4342306f	322	}
4342306f	323
78ab59fe KK	324	if (IS_DIRSYNC(dir))
78ab59fe KK	325	ntfs_sync_inode(dir);
4342306f	326
78ab59fe KK	327	if (IS_DIRSYNC(new_dir))
78ab59fe KK	328	ntfs_sync_inode(inode);
4342306f KK	329	}
4342306f KK	330
78ab59fe KK	331	ni_unlock(ni);
78ab59fe KK	332	ni_unlock(dir_ni);
4342306f	333	out:
78ab59fe	334	__putname(de);
4342306f KK	335	return err;
	336	}
	337
	338	struct dentry ntfs3_get_parent(struct dentry child)
	339	{
	340	struct inode *inode = d_inode(child);
	341	struct ntfs_inode *ni = ntfs_i(inode);
	342
	343	struct ATTR_LIST_ENTRY *le = NULL;
	344	struct ATTRIB *attr = NULL;
	345	struct ATTR_FILE_NAME *fname;
	346
	347	while ((attr = ni_find_attr(ni, attr, &le, ATTR_NAME, NULL, 0, NULL,
	348	NULL))) {
	349	fname = resident_data_ex(attr, SIZEOF_ATTRIBUTE_FILENAME);
	350	if (!fname)
	351	continue;
	352
	353	return d_obtain_alias(
	354	ntfs_iget5(inode->i_sb, &fname->home, NULL));
	355	}
	356
	357	return ERR_PTR(-ENOENT);
	358	}
	359
	360	// clang-format off
	361	const struct inode_operations ntfs_dir_inode_operations = {
	362	.lookup = ntfs_lookup,
	363	.create = ntfs_create,
	364	.link = ntfs_link,
	365	.unlink = ntfs_unlink,
	366	.symlink = ntfs_symlink,
	367	.mkdir = ntfs_mkdir,
	368	.rmdir = ntfs_rmdir,
	369	.mknod = ntfs_mknod,
	370	.rename = ntfs_rename,
	371	.permission = ntfs_permission,
	372	.get_acl = ntfs_get_acl,
	373	.set_acl = ntfs_set_acl,
	374	.setattr = ntfs3_setattr,
	375	.getattr = ntfs_getattr,
	376	.listxattr = ntfs_listxattr,
	377	.fiemap = ntfs_fiemap,
	378	};
	379
	380	const struct inode_operations ntfs_special_inode_operations = {
	381	.setattr = ntfs3_setattr,
	382	.getattr = ntfs_getattr,
	383	.listxattr = ntfs_listxattr,
	384	.get_acl = ntfs_get_acl,
	385	.set_acl = ntfs_set_acl,
	386	};
	387	// clang-format on