Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 File: linux/xattr.h
3
4 Extended attributes handling.
5
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>
9*/
10#ifndef _LINUX_XATTR_H
11#define _LINUX_XATTR_H
12
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 */
15
16#ifdef __KERNEL__
17
18#include <linux/types.h>
19
20/* Namespaces */
21#define XATTR_OS2_PREFIX "os2."
22#define XATTR_OS2_PREFIX_LEN (sizeof (XATTR_OS2_PREFIX) - 1)
23
24#define XATTR_SECURITY_PREFIX "security."
25#define XATTR_SECURITY_PREFIX_LEN (sizeof (XATTR_SECURITY_PREFIX) - 1)
26
27#define XATTR_SYSTEM_PREFIX "system."
28#define XATTR_SYSTEM_PREFIX_LEN (sizeof (XATTR_SYSTEM_PREFIX) - 1)
29
30#define XATTR_TRUSTED_PREFIX "trusted."
31#define XATTR_TRUSTED_PREFIX_LEN (sizeof (XATTR_TRUSTED_PREFIX) - 1)
32
33#define XATTR_USER_PREFIX "user."
34#define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1)
35
36/* Security namespace */
37#define XATTR_SELINUX_SUFFIX "selinux"
38#define XATTR_NAME_SELINUX XATTR_SECURITY_PREFIX XATTR_SELINUX_SUFFIX
39
40#define XATTR_SMACK_SUFFIX "SMACK64"
41#define XATTR_SMACK_IPIN "SMACK64IPIN"
42#define XATTR_SMACK_IPOUT "SMACK64IPOUT"
43#define XATTR_SMACK_EXEC "SMACK64EXEC"
44#define XATTR_SMACK_TRANSMUTE "SMACK64TRANSMUTE"
45#define XATTR_SMACK_MMAP "SMACK64MMAP"
46#define XATTR_NAME_SMACK XATTR_SECURITY_PREFIX XATTR_SMACK_SUFFIX
47#define XATTR_NAME_SMACKIPIN XATTR_SECURITY_PREFIX XATTR_SMACK_IPIN
48#define XATTR_NAME_SMACKIPOUT XATTR_SECURITY_PREFIX XATTR_SMACK_IPOUT
49#define XATTR_NAME_SMACKEXEC XATTR_SECURITY_PREFIX XATTR_SMACK_EXEC
50#define XATTR_NAME_SMACKTRANSMUTE XATTR_SECURITY_PREFIX XATTR_SMACK_TRANSMUTE
51#define XATTR_NAME_SMACKMMAP XATTR_SECURITY_PREFIX XATTR_SMACK_MMAP
52
53#define XATTR_CAPS_SUFFIX "capability"
54#define XATTR_NAME_CAPS XATTR_SECURITY_PREFIX XATTR_CAPS_SUFFIX
55
56struct inode;
57struct dentry;
58
59struct xattr_handler {
60 const char *prefix;
61 int flags; /* fs private flags passed back to the handlers */
62 size_t (*list)(struct dentry *dentry, char *list, size_t list_size,
63 const char *name, size_t name_len, int handler_flags);
64 int (*get)(struct dentry *dentry, const char *name, void *buffer,
65 size_t size, int handler_flags);
66 int (*set)(struct dentry *dentry, const char *name, const void *buffer,
67 size_t size, int flags, int handler_flags);
68};
69
70ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t);
71ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t);
72ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
73int __vfs_setxattr_noperm(struct dentry *, const char *, const void *, size_t, int);
74int vfs_setxattr(struct dentry *, const char *, const void *, size_t, int);
75int vfs_removexattr(struct dentry *, const char *);
76
77ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size);
78ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
79int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags);
80int generic_removexattr(struct dentry *dentry, const char *name);
81
82#endif /* __KERNEL__ */
83
84#endif /* _LINUX_XATTR_H */