1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (C) International Business Machines Corp., 2000-2002 4 */ 5 6 #ifndef H_JFS_XATTR 7 #define H_JFS_XATTR 8 9 #include <linux/xattr.h> 10 11 /* 12 * jfs_ea_list describe the on-disk format of the extended attributes. 13 * I know the null-terminator is redundant since namelen is stored, but 14 * I am maintaining compatibility with OS/2 where possible. 15 */ 16 struct jfs_ea { 17 u8 flag; /* Unused? */ 18 u8 namelen; /* Length of name */ 19 __le16 valuelen; /* Length of value */ 20 char name[0]; /* Attribute name (includes null-terminator) */ 21 }; /* Value immediately follows name */ 22 23 struct jfs_ea_list { 24 __le32 size; /* overall size */ 25 struct jfs_ea ea[0]; /* Variable length list */ 26 }; 27 28 /* Macros for defining maxiumum number of bytes supported for EAs */ 29 #define MAXEASIZE 65535 30 #define MAXEALISTSIZE MAXEASIZE 31 32 /* 33 * some macros for dealing with variable length EA lists. 34 */ 35 #define EA_SIZE(ea) \ 36 (sizeof (struct jfs_ea) + (ea)->namelen + 1 + \ 37 le16_to_cpu((ea)->valuelen)) 38 #define NEXT_EA(ea) ((struct jfs_ea *) (((char *) (ea)) + (EA_SIZE (ea)))) 39 #define FIRST_EA(ealist) ((ealist)->ea) 40 #define EALIST_SIZE(ealist) le32_to_cpu((ealist)->size) 41 #define END_EALIST(ealist) \ 42 ((struct jfs_ea *) (((char *) (ealist)) + EALIST_SIZE(ealist))) 43 44 extern int __jfs_setxattr(tid_t, struct inode *, const char *, const void *, 45 size_t, int); 46 extern ssize_t __jfs_getxattr(struct inode *, const char *, void *, size_t); 47 extern ssize_t jfs_listxattr(struct dentry *, char *, size_t); 48 49 extern const struct xattr_handler *jfs_xattr_handlers[]; 50 51 #ifdef CONFIG_JFS_SECURITY 52 extern int jfs_init_security(tid_t, struct inode *, struct inode *, 53 const struct qstr *); 54 #else 55 static inline int jfs_init_security(tid_t tid, struct inode *inode, 56 struct inode *dir, const struct qstr *qstr) 57 { 58 return 0; 59 } 60 #endif 61 62 #endif /* H_JFS_XATTR */ 63