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[]; /* 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[]; /* Variable length list */ |
26 | }; |
27 | |
28 | /* Macros for defining maximum 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 * const 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 | |