4 Extended attributes handling.
6 Copyright (C) 2001 by Andreas Gruenbacher <a.gruenbacher@computer.org>
7 Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved.
8 Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
10 #ifndef _LINUX_XATTR_H
11 #define _LINUX_XATTR_H
13 #define XATTR_CREATE 0x1 /* set value, fail if attr already exists */
14 #define XATTR_REPLACE 0x2 /* set value, fail if attr does not exist */
17 #define XATTR_OS2_PREFIX "os2."
18 #define XATTR_OS2_PREFIX_LEN (sizeof (XATTR_OS2_PREFIX) - 1)
20 #define XATTR_SECURITY_PREFIX "security."
21 #define XATTR_SECURITY_PREFIX_LEN (sizeof (XATTR_SECURITY_PREFIX) - 1)
23 #define XATTR_SYSTEM_PREFIX "system."
24 #define XATTR_SYSTEM_PREFIX_LEN (sizeof (XATTR_SYSTEM_PREFIX) - 1)
26 #define XATTR_TRUSTED_PREFIX "trusted."
27 #define XATTR_TRUSTED_PREFIX_LEN (sizeof (XATTR_TRUSTED_PREFIX) - 1)
29 #define XATTR_USER_PREFIX "user."
30 #define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1)
32 /* Security namespace */
33 #define XATTR_EVM_SUFFIX "evm"
34 #define XATTR_NAME_EVM XATTR_SECURITY_PREFIX XATTR_EVM_SUFFIX
36 #define XATTR_SELINUX_SUFFIX "selinux"
37 #define XATTR_NAME_SELINUX XATTR_SECURITY_PREFIX XATTR_SELINUX_SUFFIX
39 #define XATTR_SMACK_SUFFIX "SMACK64"
40 #define XATTR_SMACK_IPIN "SMACK64IPIN"
41 #define XATTR_SMACK_IPOUT "SMACK64IPOUT"
42 #define XATTR_SMACK_EXEC "SMACK64EXEC"
43 #define XATTR_SMACK_TRANSMUTE "SMACK64TRANSMUTE"
44 #define XATTR_SMACK_MMAP "SMACK64MMAP"
45 #define XATTR_NAME_SMACK XATTR_SECURITY_PREFIX XATTR_SMACK_SUFFIX
46 #define XATTR_NAME_SMACKIPIN XATTR_SECURITY_PREFIX XATTR_SMACK_IPIN
47 #define XATTR_NAME_SMACKIPOUT XATTR_SECURITY_PREFIX XATTR_SMACK_IPOUT
48 #define XATTR_NAME_SMACKEXEC XATTR_SECURITY_PREFIX XATTR_SMACK_EXEC
49 #define XATTR_NAME_SMACKTRANSMUTE XATTR_SECURITY_PREFIX XATTR_SMACK_TRANSMUTE
50 #define XATTR_NAME_SMACKMMAP XATTR_SECURITY_PREFIX XATTR_SMACK_MMAP
52 #define XATTR_CAPS_SUFFIX "capability"
53 #define XATTR_NAME_CAPS XATTR_SECURITY_PREFIX XATTR_CAPS_SUFFIX
55 #define XATTR_POSIX_ACL_ACCESS "posix_acl_access"
56 #define XATTR_NAME_POSIX_ACL_ACCESS XATTR_SYSTEM_PREFIX XATTR_POSIX_ACL_ACCESS
57 #define XATTR_POSIX_ACL_DEFAULT "posix_acl_default"
58 #define XATTR_NAME_POSIX_ACL_DEFAULT XATTR_SYSTEM_PREFIX XATTR_POSIX_ACL_DEFAULT
62 #include <linux/types.h>
67 struct xattr_handler
{
69 int flags
; /* fs private flags passed back to the handlers */
70 size_t (*list
)(struct dentry
*dentry
, char *list
, size_t list_size
,
71 const char *name
, size_t name_len
, int handler_flags
);
72 int (*get
)(struct dentry
*dentry
, const char *name
, void *buffer
,
73 size_t size
, int handler_flags
);
74 int (*set
)(struct dentry
*dentry
, const char *name
, const void *buffer
,
75 size_t size
, int flags
, int handler_flags
);
84 ssize_t
xattr_getsecurity(struct inode
*, const char *, void *, size_t);
85 ssize_t
vfs_getxattr(struct dentry
*, const char *, void *, size_t);
86 ssize_t
vfs_listxattr(struct dentry
*d
, char *list
, size_t size
);
87 int __vfs_setxattr_noperm(struct dentry
*, const char *, const void *, size_t, int);
88 int vfs_setxattr(struct dentry
*, const char *, const void *, size_t, int);
89 int vfs_removexattr(struct dentry
*, const char *);
91 ssize_t
generic_getxattr(struct dentry
*dentry
, const char *name
, void *buffer
, size_t size
);
92 ssize_t
generic_listxattr(struct dentry
*dentry
, char *buffer
, size_t buffer_size
);
93 int generic_setxattr(struct dentry
*dentry
, const char *name
, const void *value
, size_t size
, int flags
);
94 int generic_removexattr(struct dentry
*dentry
, const char *name
);
95 ssize_t
vfs_getxattr_alloc(struct dentry
*dentry
, const char *name
,
96 char **xattr_value
, size_t size
, gfp_t flags
);
97 int vfs_xattr_cmp(struct dentry
*dentry
, const char *xattr_name
,
98 const char *value
, size_t size
, gfp_t flags
);
99 #endif /* __KERNEL__ */
101 #endif /* _LINUX_XATTR_H */
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