Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 2017-2018 HUAWEI, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *             https://www.huawei.com/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Created by Gao Xiang <gaoxiang25@huawei.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #ifndef __EROFS_XATTR_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #define __EROFS_XATTR_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/posix_acl_xattr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/xattr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /* Attribute not found */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define ENOATTR         ENODATA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) static inline unsigned int inlinexattr_header_size(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	return sizeof(struct erofs_xattr_ibody_header) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 		sizeof(u32) * EROFS_I(inode)->xattr_shared_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static inline erofs_blk_t xattrblock_addr(struct erofs_sb_info *sbi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 					  unsigned int xattr_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #ifdef CONFIG_EROFS_FS_XATTR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	return sbi->xattr_blkaddr +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		xattr_id * sizeof(__u32) / EROFS_BLKSIZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static inline unsigned int xattrblock_offset(struct erofs_sb_info *sbi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 					     unsigned int xattr_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	return (xattr_id * sizeof(__u32)) % EROFS_BLKSIZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #ifdef CONFIG_EROFS_FS_XATTR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) extern const struct xattr_handler erofs_xattr_user_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) extern const struct xattr_handler erofs_xattr_trusted_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #ifdef CONFIG_EROFS_FS_SECURITY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) extern const struct xattr_handler erofs_xattr_security_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static inline const struct xattr_handler *erofs_xattr_handler(unsigned int idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	static const struct xattr_handler *xattr_handler_map[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 		[EROFS_XATTR_INDEX_USER] = &erofs_xattr_user_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #ifdef CONFIG_EROFS_FS_POSIX_ACL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 		[EROFS_XATTR_INDEX_POSIX_ACL_ACCESS] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 			&posix_acl_access_xattr_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 		[EROFS_XATTR_INDEX_POSIX_ACL_DEFAULT] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 			&posix_acl_default_xattr_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 		[EROFS_XATTR_INDEX_TRUSTED] = &erofs_xattr_trusted_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #ifdef CONFIG_EROFS_FS_SECURITY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 		[EROFS_XATTR_INDEX_SECURITY] = &erofs_xattr_security_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	return idx && idx < ARRAY_SIZE(xattr_handler_map) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 		xattr_handler_map[idx] : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) extern const struct xattr_handler *erofs_xattr_handlers[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) int erofs_getxattr(struct inode *, int, const char *, void *, size_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) ssize_t erofs_listxattr(struct dentry *, char *, size_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static inline int erofs_getxattr(struct inode *inode, int index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 				 const char *name, void *buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 				 size_t buffer_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define erofs_listxattr (NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define erofs_xattr_handlers (NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #endif	/* !CONFIG_EROFS_FS_XATTR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #ifdef CONFIG_EROFS_FS_POSIX_ACL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct posix_acl *erofs_get_acl(struct inode *inode, int type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define erofs_get_acl	(NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)