linux/fs/ext4/acl.c

// SPDX-License-Identifier: GPL-2.0
/*
 * linux/fs/ext4/acl.c
 *
 * Copyright (C) 2001-2003 Andreas Gruenbacher, <[email protected]>
 */

#include <linux/quotaops.h>
#include "ext4_jbd2.h"
#include "ext4.h"
#include "xattr.h"
#include "acl.h"

/*
 * Convert from filesystem to in-memory representation.
 */
static struct posix_acl *
ext4_acl_from_disk(const void *value, size_t size)
{ … }

/*
 * Convert from in-memory to filesystem representation.
 */
static void *
ext4_acl_to_disk(const struct posix_acl *acl, size_t *size)
{ … }

/*
 * Inode operation get_posix_acl().
 *
 * inode->i_rwsem: don't care
 */
struct posix_acl *
ext4_get_acl(struct inode *inode, int type, bool rcu)
{ … }

/*
 * Set the access or default ACL of an inode.
 *
 * inode->i_rwsem: down unless called from ext4_new_inode
 */
static int
__ext4_set_acl(handle_t *handle, struct inode *inode, int type,
	     struct posix_acl *acl, int xattr_flags)
{ … }

int
ext4_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
	     struct posix_acl *acl, int type)
{ … }

/*
 * Initialize the ACLs of a new inode. Called from ext4_new_inode.
 *
 * dir->i_rwsem: down
 * inode->i_rwsem: up (access to inode is still exclusive)
 */
int
ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
{ … }