linux/fs/xfs/xfs_acl.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2008, Christoph Hellwig
 * All Rights Reserved.
 */
#include "xfs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_inode.h"
#include "xfs_da_format.h"
#include "xfs_da_btree.h"
#include "xfs_attr.h"
#include "xfs_trace.h"
#include "xfs_error.h"
#include "xfs_acl.h"
#include "xfs_trans.h"
#include "xfs_xattr.h"

#include <linux/posix_acl_xattr.h>

/*
 * Locking scheme:
 *  - all ACL updates are protected by inode->i_mutex, which is taken before
 *    calling into this file.
 */

STATIC struct posix_acl *
xfs_acl_from_disk(
	struct xfs_mount	*mp,
	const struct xfs_acl	*aclp,
	int			len,
	int			max_entries)
{ … }

STATIC void
xfs_acl_to_disk(struct xfs_acl *aclp, const struct posix_acl *acl)
{ … }

struct posix_acl *
xfs_get_acl(struct inode *inode, int type, bool rcu)
{ … }

int
__xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
{ … }

static int
xfs_acl_set_mode(
	struct inode		*inode,
	umode_t			mode)
{ … }

int
xfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
	    struct posix_acl *acl, int type)
{ … }

/*
 * Invalidate any cached ACLs if the user has bypassed the ACL interface.
 * We don't validate the content whatsoever so it is caller responsibility to
 * provide data in valid format and ensure i_mode is consistent.
 */
void
xfs_forget_acl(
	struct inode		*inode,
	const char		*name)
{ … }