Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
[cris-mirror.git] / include / linux / xattr.h
blob6050783005bd9839ceaa1df692b526afd14982fc
1 /*
2 File: linux/xattr.h
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>
9 */
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 */
16 #ifdef __KERNEL__
18 #include <linux/types.h>
20 /* Namespaces */
21 #define XATTR_OS2_PREFIX "os2."
22 #define XATTR_OS2_PREFIX_LEN (sizeof (XATTR_OS2_PREFIX) - 1)
24 #define XATTR_SECURITY_PREFIX "security."
25 #define XATTR_SECURITY_PREFIX_LEN (sizeof (XATTR_SECURITY_PREFIX) - 1)
27 #define XATTR_SYSTEM_PREFIX "system."
28 #define XATTR_SYSTEM_PREFIX_LEN (sizeof (XATTR_SYSTEM_PREFIX) - 1)
30 #define XATTR_TRUSTED_PREFIX "trusted."
31 #define XATTR_TRUSTED_PREFIX_LEN (sizeof (XATTR_TRUSTED_PREFIX) - 1)
33 #define XATTR_USER_PREFIX "user."
34 #define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1)
36 /* Security namespace */
37 #define XATTR_SELINUX_SUFFIX "selinux"
38 #define XATTR_NAME_SELINUX XATTR_SECURITY_PREFIX XATTR_SELINUX_SUFFIX
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
53 #define XATTR_CAPS_SUFFIX "capability"
54 #define XATTR_NAME_CAPS XATTR_SECURITY_PREFIX XATTR_CAPS_SUFFIX
56 struct inode;
57 struct dentry;
59 struct 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);
70 ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t);
71 ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t);
72 ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
73 int __vfs_setxattr_noperm(struct dentry *, const char *, const void *, size_t, int);
74 int vfs_setxattr(struct dentry *, const char *, const void *, size_t, int);
75 int vfs_removexattr(struct dentry *, const char *);
77 ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size);
78 ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
79 int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags);
80 int generic_removexattr(struct dentry *dentry, const char *name);
82 #endif /* __KERNEL__ */
84 #endif /* _LINUX_XATTR_H */