[linux.git] / fs / 9p / acl.c

// SPDX-License-Identifier: LGPL-2.1
/*
 * Copyright IBM Corporation, 2010
 * Author Aneesh Kumar K.V <[email protected]>
 */

#include <linux/module.h>
#include <linux/fs.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/posix_acl_xattr.h>
#include "xattr.h"
#include "acl.h"
#include "v9fs.h"
#include "v9fs_vfs.h"
#include "fid.h"

static struct posix_acl *__v9fs_get_acl(struct p9_fid *fid, char *name)
{
	ssize_t size;
	void *value = NULL;
	struct posix_acl *acl = NULL;

	size = v9fs_fid_xattr_get(fid, name, NULL, 0);
	if (size > 0) {
		value = kzalloc(size, GFP_NOFS);
		if (!value)
			return ERR_PTR(-ENOMEM);
		size = v9fs_fid_xattr_get(fid, name, value, size);
		if (size > 0) {
			acl = posix_acl_from_xattr(&init_user_ns, value, size);
			if (IS_ERR(acl))
				goto err_out;
		}
	} else if (size == -ENODATA || size == 0 ||
		   size == -ENOSYS || size == -EOPNOTSUPP) {
		acl = NULL;
	} else
		acl = ERR_PTR(-EIO);

err_out:
	kfree(value);
	return acl;
}

int v9fs_get_acl(struct inode *inode, struct p9_fid *fid)
{
	int retval = 0;
	struct posix_acl *pacl, *dacl;
	struct v9fs_session_info *v9ses;

	v9ses = v9fs_inode2v9ses(inode);
	if (((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT) ||
			((v9ses->flags & V9FS_ACL_MASK) != V9FS_POSIX_ACL)) {
		set_cached_acl(inode, ACL_TYPE_DEFAULT, NULL);
		set_cached_acl(inode, ACL_TYPE_ACCESS, NULL);
		return 0;
	}
	/* get the default/access acl values and cache them */
	dacl = __v9fs_get_acl(fid, XATTR_NAME_POSIX_ACL_DEFAULT);
	pacl = __v9fs_get_acl(fid, XATTR_NAME_POSIX_ACL_ACCESS);

	if (!IS_ERR(dacl) && !IS_ERR(pacl)) {
		set_cached_acl(inode, ACL_TYPE_DEFAULT, dacl);
		set_cached_acl(inode, ACL_TYPE_ACCESS, pacl);
	} else
		retval = -EIO;

	if (!IS_ERR(dacl))
		posix_acl_release(dacl);

	if (!IS_ERR(pacl))
		posix_acl_release(pacl);

	return retval;
}

static struct posix_acl *v9fs_get_cached_acl(struct inode *inode, int type)
{
	struct posix_acl *acl;
	/*
	 * 9p Always cache the acl value when
	 * instantiating the inode (v9fs_inode_from_fid)
	 */
	acl = get_cached_acl(inode, type);
	BUG_ON(is_uncached_acl(acl));
	return acl;
}

struct posix_acl *v9fs_iop_get_acl(struct inode *inode, int type, bool rcu)
{
	struct v9fs_session_info *v9ses;

	if (rcu)
		return ERR_PTR(-ECHILD);

	v9ses = v9fs_inode2v9ses(inode);
	if (((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT) ||
			((v9ses->flags & V9FS_ACL_MASK) != V9FS_POSIX_ACL)) {
		/*
		 * On access = client  and acl = on mode get the acl
		 * values from the server
		 */
		return NULL;
	}
	return v9fs_get_cached_acl(inode, type);

}

static int v9fs_set_acl(struct p9_fid *fid, int type, struct posix_acl *acl)
{
	int retval;
	char *name;
	size_t size;
	void *buffer;

	if (!acl)
		return 0;

	/* Set a setxattr request to server */
	size = posix_acl_xattr_size(acl->a_count);
	buffer = kmalloc(size, GFP_KERNEL);
	if (!buffer)
		return -ENOMEM;
	retval = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
	if (retval < 0)
		goto err_free_out;
	switch (type) {
	case ACL_TYPE_ACCESS:
		name = XATTR_NAME_POSIX_ACL_ACCESS;
		break;
	case ACL_TYPE_DEFAULT:
		name = XATTR_NAME_POSIX_ACL_DEFAULT;
		break;
	default:
		BUG();
	}
	retval = v9fs_fid_xattr_set(fid, name, buffer, size, 0);
err_free_out:
	kfree(buffer);
	return retval;
}

int v9fs_acl_chmod(struct inode *inode, struct p9_fid *fid)
{
	int retval = 0;
	struct posix_acl *acl;

	if (S_ISLNK(inode->i_mode))
		return -EOPNOTSUPP;
	acl = v9fs_get_cached_acl(inode, ACL_TYPE_ACCESS);
	if (acl) {
		retval = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
		if (retval)
			return retval;
		set_cached_acl(inode, ACL_TYPE_ACCESS, acl);
		retval = v9fs_set_acl(fid, ACL_TYPE_ACCESS, acl);
		posix_acl_release(acl);
	}
	return retval;
}

int v9fs_set_create_acl(struct inode *inode, struct p9_fid *fid,
			struct posix_acl *dacl, struct posix_acl *acl)
{
	set_cached_acl(inode, ACL_TYPE_DEFAULT, dacl);
	set_cached_acl(inode, ACL_TYPE_ACCESS, acl);
	v9fs_set_acl(fid, ACL_TYPE_DEFAULT, dacl);
	v9fs_set_acl(fid, ACL_TYPE_ACCESS, acl);
	return 0;
}

void v9fs_put_acl(struct posix_acl *dacl,
		  struct posix_acl *acl)
{
	posix_acl_release(dacl);
	posix_acl_release(acl);
}

int v9fs_acl_mode(struct inode *dir, umode_t *modep,
		  struct posix_acl **dpacl, struct posix_acl **pacl)
{
	int retval = 0;
	umode_t mode = *modep;
	struct posix_acl *acl = NULL;

	if (!S_ISLNK(mode)) {
		acl = v9fs_get_cached_acl(dir, ACL_TYPE_DEFAULT);
		if (IS_ERR(acl))
			return PTR_ERR(acl);
		if (!acl)
			mode &= ~current_umask();
	}
	if (acl) {
		if (S_ISDIR(mode))
			*dpacl = posix_acl_dup(acl);
		retval = __posix_acl_create(&acl, GFP_NOFS, &mode);
		if (retval < 0)
			return retval;
		if (retval > 0)
			*pacl = acl;
		else
			posix_acl_release(acl);
	}
	*modep  = mode;
	return 0;
}

static int v9fs_xattr_get_acl(const struct xattr_handler *handler,
			      struct dentry *dentry, struct inode *inode,
			      const char *name, void *buffer, size_t size)
{
	struct v9fs_session_info *v9ses;
	struct posix_acl *acl;
	int error;

	v9ses = v9fs_dentry2v9ses(dentry);
	/*
	 * We allow set/get/list of acl when access=client is not specified
	 */
	if ((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT)
		return v9fs_xattr_get(dentry, handler->name, buffer, size);

	acl = v9fs_get_cached_acl(inode, handler->flags);
	if (IS_ERR(acl))
		return PTR_ERR(acl);
	if (acl == NULL)
		return -ENODATA;
	error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
	posix_acl_release(acl);

	return error;
}

static int v9fs_xattr_set_acl(const struct xattr_handler *handler,
			      struct user_namespace *mnt_userns,
			      struct dentry *dentry, struct inode *inode,
			      const char *name, const void *value,
			      size_t size, int flags)
{
	int retval;
	struct posix_acl *acl;
	struct v9fs_session_info *v9ses;

	v9ses = v9fs_dentry2v9ses(dentry);
	/*
	 * set the attribute on the remote. Without even looking at the
	 * xattr value. We leave it to the server to validate
	 */
	if ((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT)
		return v9fs_xattr_set(dentry, handler->name, value, size,
				      flags);

	if (S_ISLNK(inode->i_mode))
		return -EOPNOTSUPP;
	if (!inode_owner_or_capable(&init_user_ns, inode))
		return -EPERM;
	if (value) {
		/* update the cached acl value */
		acl = posix_acl_from_xattr(&init_user_ns, value, size);
		if (IS_ERR(acl))
			return PTR_ERR(acl);
		else if (acl) {
			retval = posix_acl_valid(inode->i_sb->s_user_ns, acl);
			if (retval)
				goto err_out;
		}
	} else
		acl = NULL;

	switch (handler->flags) {
	case ACL_TYPE_ACCESS:
		if (acl) {
			struct iattr iattr = { 0 };
			struct posix_acl *old_acl = acl;

			retval = posix_acl_update_mode(&init_user_ns, inode,
						       &iattr.ia_mode, &acl);
			if (retval)
				goto err_out;
			if (!acl) {
				/*
				 * ACL can be represented
				 * by the mode bits. So don't
				 * update ACL.
				 */
				posix_acl_release(old_acl);
				value = NULL;
				size = 0;
			}
			iattr.ia_valid = ATTR_MODE;
			/* FIXME should we update ctime ?
			 * What is the following setxattr update the
			 * mode ?
			 */
			v9fs_vfs_setattr_dotl(&init_user_ns, dentry, &iattr);
		}
		break;
	case ACL_TYPE_DEFAULT:
		if (!S_ISDIR(inode->i_mode)) {
			retval = acl ? -EINVAL : 0;
			goto err_out;
		}
		break;
	default:
		BUG();
	}
	retval = v9fs_xattr_set(dentry, handler->name, value, size, flags);
	if (!retval)
		set_cached_acl(inode, handler->flags, acl);
err_out:
	posix_acl_release(acl);
	return retval;
}

const struct xattr_handler v9fs_xattr_acl_access_handler = {
	.name	= XATTR_NAME_POSIX_ACL_ACCESS,
	.flags	= ACL_TYPE_ACCESS,
	.get	= v9fs_xattr_get_acl,
	.set	= v9fs_xattr_set_acl,
};

const struct xattr_handler v9fs_xattr_acl_default_handler = {
	.name	= XATTR_NAME_POSIX_ACL_DEFAULT,
	.flags	= ACL_TYPE_DEFAULT,
	.get	= v9fs_xattr_get_acl,
	.set	= v9fs_xattr_set_acl,
};
Commit	Line	Data
024b7d6a	1	// SPDX-License-Identifier: LGPL-2.1
85ff872d AK	2	/*
	3	* Copyright IBM Corporation, 2010
	4	* Author Aneesh Kumar K.V <[email protected]>
85ff872d AK	5	*/
	6
	7	#include <linux/module.h>
	8	#include <linux/fs.h>
	9	#include <net/9p/9p.h>
	10	#include <net/9p/client.h>
	11	#include <linux/slab.h>
22d8dcdf	12	#include <linux/sched.h>
85ff872d AK	13	#include <linux/posix_acl_xattr.h>
	14	#include "xattr.h"
	15	#include "acl.h"
76381a42	16	#include "v9fs.h"
5ffc0cb3	17	#include "v9fs_vfs.h"
0f235cae	18	#include "fid.h"
85ff872d AK	19
	20	static struct posix_acl __v9fs_get_acl(struct p9_fid fid, char *name)
	21	{
	22	ssize_t size;
	23	void *value = NULL;
009ca389	24	struct posix_acl *acl = NULL;
85ff872d AK	25
	26	size = v9fs_fid_xattr_get(fid, name, NULL, 0);
	27	if (size > 0) {
	28	value = kzalloc(size, GFP_NOFS);
	29	if (!value)
	30	return ERR_PTR(-ENOMEM);
	31	size = v9fs_fid_xattr_get(fid, name, value, size);
	32	if (size > 0) {
5f3a4a28	33	acl = posix_acl_from_xattr(&init_user_ns, value, size);
85ff872d AK	34	if (IS_ERR(acl))
	35	goto err_out;
	36	}
	37	} else if (size == -ENODATA \|\| size == 0 \|\|
	38	size == -ENOSYS \|\| size == -EOPNOTSUPP) {
	39	acl = NULL;
	40	} else
	41	acl = ERR_PTR(-EIO);
	42
	43	err_out:
	44	kfree(value);
	45	return acl;
	46	}
	47
	48	int v9fs_get_acl(struct inode inode, struct p9_fid fid)
	49	{
	50	int retval = 0;
	51	struct posix_acl pacl, dacl;
76381a42	52	struct v9fs_session_info *v9ses;
85ff872d	53
76381a42	54	v9ses = v9fs_inode2v9ses(inode);
e782ef71 VJJ	55	if (((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT) \|\|
e782ef71 VJJ	56	((v9ses->flags & V9FS_ACL_MASK) != V9FS_POSIX_ACL)) {
76381a42 AK	57	set_cached_acl(inode, ACL_TYPE_DEFAULT, NULL);
	58	set_cached_acl(inode, ACL_TYPE_ACCESS, NULL);
	59	return 0;
	60	}
85ff872d	61	/* get the default/access acl values and cache them */
97d79299 AG	62	dacl = __v9fs_get_acl(fid, XATTR_NAME_POSIX_ACL_DEFAULT);
97d79299 AG	63	pacl = __v9fs_get_acl(fid, XATTR_NAME_POSIX_ACL_ACCESS);
85ff872d AK	64
	65	if (!IS_ERR(dacl) && !IS_ERR(pacl)) {
	66	set_cached_acl(inode, ACL_TYPE_DEFAULT, dacl);
	67	set_cached_acl(inode, ACL_TYPE_ACCESS, pacl);
85ff872d AK	68	} else
	69	retval = -EIO;
	70
c61fa0d6 VJJ	71	if (!IS_ERR(dacl))
	72	posix_acl_release(dacl);
	73
	74	if (!IS_ERR(pacl))
	75	posix_acl_release(pacl);
	76
85ff872d AK	77	return retval;
	78	}
	79
	80	static struct posix_acl v9fs_get_cached_acl(struct inode inode, int type)
	81	{
	82	struct posix_acl *acl;
	83	/*
	84	* 9p Always cache the acl value when
	85	* instantiating the inode (v9fs_inode_from_fid)
	86	*/
	87	acl = get_cached_acl(inode, type);
b8a7a3a6	88	BUG_ON(is_uncached_acl(acl));
85ff872d AK	89	return acl;
	90	}
	91
0cad6246	92	struct posix_acl v9fs_iop_get_acl(struct inode inode, int type, bool rcu)
85ff872d	93	{
76381a42 AK	94	struct v9fs_session_info *v9ses;
76381a42 AK	95
0cad6246 MS	96	if (rcu)
	97	return ERR_PTR(-ECHILD);
	98
76381a42	99	v9ses = v9fs_inode2v9ses(inode);
e782ef71 VJJ	100	if (((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT) \|\|
e782ef71 VJJ	101	((v9ses->flags & V9FS_ACL_MASK) != V9FS_POSIX_ACL)) {
76381a42	102	/*
e782ef71	103	* On access = client and acl = on mode get the acl
76381a42 AK	104	* values from the server
76381a42 AK	105	*/
4e34e719	106	return NULL;
76381a42	107	}
4e34e719 CH	108	return v9fs_get_cached_acl(inode, type);
4e34e719 CH	109
85ff872d	110	}
7a4566b0	111
0f235cae	112	static int v9fs_set_acl(struct p9_fid fid, int type, struct posix_acl acl)
6e8dc555 AK	113	{
	114	int retval;
	115	char *name;
	116	size_t size;
	117	void *buffer;
6e195b0f	118
d344b0fb VJJ	119	if (!acl)
	120	return 0;
	121
6e8dc555 AK	122	/* Set a setxattr request to server */
	123	size = posix_acl_xattr_size(acl->a_count);
	124	buffer = kmalloc(size, GFP_KERNEL);
	125	if (!buffer)
	126	return -ENOMEM;
5f3a4a28	127	retval = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
6e8dc555 AK	128	if (retval < 0)
	129	goto err_free_out;
	130	switch (type) {
	131	case ACL_TYPE_ACCESS:
97d79299	132	name = XATTR_NAME_POSIX_ACL_ACCESS;
6e8dc555 AK	133	break;
6e8dc555 AK	134	case ACL_TYPE_DEFAULT:
97d79299	135	name = XATTR_NAME_POSIX_ACL_DEFAULT;
6e8dc555 AK	136	break;
	137	default:
	138	BUG();
	139	}
0f235cae	140	retval = v9fs_fid_xattr_set(fid, name, buffer, size, 0);
6e8dc555 AK	141	err_free_out:
	142	kfree(buffer);
	143	return retval;
	144	}
	145
be308f07	146	int v9fs_acl_chmod(struct inode inode, struct p9_fid fid)
6e8dc555 AK	147	{
6e8dc555 AK	148	int retval = 0;
bc26ab5f	149	struct posix_acl *acl;
6e8dc555 AK	150
	151	if (S_ISLNK(inode->i_mode))
	152	return -EOPNOTSUPP;
	153	acl = v9fs_get_cached_acl(inode, ACL_TYPE_ACCESS);
	154	if (acl) {
5bf3258f	155	retval = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
bc26ab5f AV	156	if (retval)
bc26ab5f AV	157	return retval;
7f165aaa	158	set_cached_acl(inode, ACL_TYPE_ACCESS, acl);
0f235cae	159	retval = v9fs_set_acl(fid, ACL_TYPE_ACCESS, acl);
6e8dc555	160	posix_acl_release(acl);
6e8dc555 AK	161	}
	162	return retval;
	163	}
	164
3592ac44	165	int v9fs_set_create_acl(struct inode inode, struct p9_fid fid,
5fa6300a	166	struct posix_acl dacl, struct posix_acl acl)
ad77dbce	167	{
3592ac44 AV	168	set_cached_acl(inode, ACL_TYPE_DEFAULT, dacl);
	169	set_cached_acl(inode, ACL_TYPE_ACCESS, acl);
	170	v9fs_set_acl(fid, ACL_TYPE_DEFAULT, dacl);
	171	v9fs_set_acl(fid, ACL_TYPE_ACCESS, acl);
ad77dbce AK	172	return 0;
	173	}
	174
5fa6300a AV	175	void v9fs_put_acl(struct posix_acl *dacl,
	176	struct posix_acl *acl)
	177	{
	178	posix_acl_release(dacl);
	179	posix_acl_release(acl);
	180	}
	181
d3fb6120	182	int v9fs_acl_mode(struct inode dir, umode_t modep,
ad77dbce AK	183	struct posix_acl dpacl, struct posix_acl pacl)
	184	{
	185	int retval = 0;
d3fb6120	186	umode_t mode = *modep;
ad77dbce AK	187	struct posix_acl *acl = NULL;
	188
	189	if (!S_ISLNK(mode)) {
	190	acl = v9fs_get_cached_acl(dir, ACL_TYPE_DEFAULT);
	191	if (IS_ERR(acl))
	192	return PTR_ERR(acl);
	193	if (!acl)
	194	mode &= ~current_umask();
	195	}
	196	if (acl) {
ad77dbce	197	if (S_ISDIR(mode))
1ec95bf3	198	*dpacl = posix_acl_dup(acl);
37bc1539	199	retval = __posix_acl_create(&acl, GFP_NOFS, &mode);
826cae2f AV	200	if (retval < 0)
826cae2f AV	201	return retval;
ad77dbce	202	if (retval > 0)
826cae2f	203	*pacl = acl;
1ec95bf3	204	else
826cae2f	205	posix_acl_release(acl);
ad77dbce AK	206	}
	207	*modep = mode;
	208	return 0;
ad77dbce AK	209	}
ad77dbce AK	210
d9a82a04	211	static int v9fs_xattr_get_acl(const struct xattr_handler *handler,
b296821a AV	212	struct dentry dentry, struct inode inode,
b296821a AV	213	const char name, void buffer, size_t size)
7a4566b0	214	{
76381a42	215	struct v9fs_session_info *v9ses;
7a4566b0 AK	216	struct posix_acl *acl;
	217	int error;
	218
42869c8a	219	v9ses = v9fs_dentry2v9ses(dentry);
76381a42 AK	220	/*
	221	* We allow set/get/list of acl when access=client is not specified
	222	*/
	223	if ((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT)
98e9cb57	224	return v9fs_xattr_get(dentry, handler->name, buffer, size);
76381a42	225
b296821a	226	acl = v9fs_get_cached_acl(inode, handler->flags);
7a4566b0 AK	227	if (IS_ERR(acl))
	228	return PTR_ERR(acl);
	229	if (acl == NULL)
	230	return -ENODATA;
5f3a4a28	231	error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
7a4566b0 AK	232	posix_acl_release(acl);
	233
	234	return error;
	235	}
	236
d9a82a04	237	static int v9fs_xattr_set_acl(const struct xattr_handler *handler,
e65ce2a5	238	struct user_namespace *mnt_userns,
59301226 AV	239	struct dentry dentry, struct inode inode,
	240	const char name, const void value,
	241	size_t size, int flags)
7a4566b0	242	{
22d8dcdf AK	243	int retval;
22d8dcdf AK	244	struct posix_acl *acl;
76381a42	245	struct v9fs_session_info *v9ses;
22d8dcdf	246
42869c8a	247	v9ses = v9fs_dentry2v9ses(dentry);
76381a42 AK	248	/*
	249	* set the attribute on the remote. Without even looking at the
	250	* xattr value. We leave it to the server to validate
	251	*/
	252	if ((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT)
98e9cb57	253	return v9fs_xattr_set(dentry, handler->name, value, size,
e409de99	254	flags);
76381a42	255
22d8dcdf AK	256	if (S_ISLNK(inode->i_mode))
22d8dcdf AK	257	return -EOPNOTSUPP;
21cb47be	258	if (!inode_owner_or_capable(&init_user_ns, inode))
22d8dcdf AK	259	return -EPERM;
	260	if (value) {
	261	/* update the cached acl value */
5f3a4a28	262	acl = posix_acl_from_xattr(&init_user_ns, value, size);
22d8dcdf AK	263	if (IS_ERR(acl))
	264	return PTR_ERR(acl);
	265	else if (acl) {
0d4d717f	266	retval = posix_acl_valid(inode->i_sb->s_user_ns, acl);
22d8dcdf AK	267	if (retval)
	268	goto err_out;
	269	}
	270	} else
	271	acl = NULL;
	272
d9a82a04	273	switch (handler->flags) {
22d8dcdf	274	case ACL_TYPE_ACCESS:
22d8dcdf	275	if (acl) {
e02a53d9	276	struct iattr iattr = { 0 };
b5c66bab	277	struct posix_acl *old_acl = acl;
07393101	278
549c7297	279	retval = posix_acl_update_mode(&init_user_ns, inode,
e65ce2a5	280	&iattr.ia_mode, &acl);
07393101	281	if (retval)
22d8dcdf	282	goto err_out;
07393101 JK	283	if (!acl) {
	284	/*
	285	* ACL can be represented
	286	* by the mode bits. So don't
	287	* update ACL.
22d8dcdf	288	*/
b5c66bab	289	posix_acl_release(old_acl);
07393101 JK	290	value = NULL;
07393101 JK	291	size = 0;
22d8dcdf	292	}
07393101 JK	293	iattr.ia_valid = ATTR_MODE;
	294	/* FIXME should we update ctime ?
	295	* What is the following setxattr update the
	296	* mode ?
	297	*/
549c7297	298	v9fs_vfs_setattr_dotl(&init_user_ns, dentry, &iattr);
22d8dcdf AK	299	}
	300	break;
	301	case ACL_TYPE_DEFAULT:
22d8dcdf	302	if (!S_ISDIR(inode->i_mode)) {
6f81c115	303	retval = acl ? -EINVAL : 0;
22d8dcdf AK	304	goto err_out;
	305	}
	306	break;
	307	default:
	308	BUG();
	309	}
98e9cb57	310	retval = v9fs_xattr_set(dentry, handler->name, value, size, flags);
22d8dcdf	311	if (!retval)
d9a82a04	312	set_cached_acl(inode, handler->flags, acl);
22d8dcdf AK	313	err_out:
	314	posix_acl_release(acl);
	315	return retval;
7a4566b0 AK	316	}
	317
	318	const struct xattr_handler v9fs_xattr_acl_access_handler = {
98e9cb57	319	.name = XATTR_NAME_POSIX_ACL_ACCESS,
7a4566b0 AK	320	.flags = ACL_TYPE_ACCESS,
	321	.get = v9fs_xattr_get_acl,
	322	.set = v9fs_xattr_set_acl,
	323	};
	324
	325	const struct xattr_handler v9fs_xattr_acl_default_handler = {
98e9cb57	326	.name = XATTR_NAME_POSIX_ACL_DEFAULT,
7a4566b0 AK	327	.flags = ACL_TYPE_DEFAULT,
	328	.get = v9fs_xattr_get_acl,
	329	.set = v9fs_xattr_set_acl,
	330	};