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/* SPDX-License-Identifier: GPL-2.0+ OR Apache-2.0 */
/*
* Originally contributed by an anonymous person,
* heavily changed by Li Guifu <blucerlee@gmail.com>
* and Gao Xiang <xiang@kernel.org>
*/
#ifndef __EROFS_XATTR_H
#define __EROFS_XATTR_H
#ifdef __cplusplus
extern "C"
{
#endif
#include "internal.h"
#define EROFS_INODE_XATTR_ICOUNT(_size) ({\
u32 __size = le16_to_cpu(_size); \
((__size) == 0) ? 0 : \
(_size - sizeof(struct erofs_xattr_ibody_header)) / \
sizeof(struct erofs_xattr_entry) + 1; })
#ifndef XATTR_USER_PREFIX
#define XATTR_USER_PREFIX "user."
#endif
#ifndef XATTR_USER_PREFIX_LEN
#define XATTR_USER_PREFIX_LEN (sizeof(XATTR_USER_PREFIX) - 1)
#endif
#ifndef XATTR_SECURITY_PREFIX
#define XATTR_SECURITY_PREFIX "security."
#endif
#ifndef XATTR_SECURITY_PREFIX_LEN
#define XATTR_SECURITY_PREFIX_LEN (sizeof(XATTR_SECURITY_PREFIX) - 1)
#endif
#ifndef XATTR_TRUSTED_PREFIX
#define XATTR_TRUSTED_PREFIX "trusted."
#endif
#ifndef XATTR_TRUSTED_PREFIX_LEN
#define XATTR_TRUSTED_PREFIX_LEN (sizeof(XATTR_TRUSTED_PREFIX) - 1)
#endif
#ifndef XATTR_NAME_POSIX_ACL_ACCESS
#define XATTR_NAME_POSIX_ACL_ACCESS "system.posix_acl_access"
#endif
#ifndef XATTR_NAME_POSIX_ACL_DEFAULT
#define XATTR_NAME_POSIX_ACL_DEFAULT "system.posix_acl_default"
#endif
int erofs_prepare_xattr_ibody(struct erofs_inode *inode);
char *erofs_export_xattr_ibody(struct list_head *ixattrs, unsigned int size);
int erofs_build_shared_xattrs_from_path(const char *path);
#ifdef __cplusplus
}
#endif
#endif
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