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
57 #include <linux/types.h>
62 struct xattr_handler {
64 int flags; /* fs private flags passed back to the handlers */
65 size_t (*list)(struct dentry *dentry, char *list, size_t list_size,
66 const char *name, size_t name_len, int handler_flags);
67 int (*get)(struct dentry *dentry, const char *name, void *buffer,
68 size_t size, int handler_flags);
69 int (*set)(struct dentry *dentry, const char *name, const void *buffer,
70 size_t size, int flags, int handler_flags);
79 ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t);
80 ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t);
81 ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
82 int __vfs_setxattr_noperm(struct dentry *, const char *, const void *, size_t, int);
83 int vfs_setxattr(struct dentry *, const char *, const void *, size_t, int);
84 int vfs_removexattr(struct dentry *, const char *);
86 ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size);
87 ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
88 int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags);
89 int generic_removexattr(struct dentry *dentry, const char *name);
90 ssize_t vfs_getxattr_alloc(struct dentry *dentry, const char *name,
91 char **xattr_value, size_t size, gfp_t flags);
92 int vfs_xattr_cmp(struct dentry *dentry, const char *xattr_name,
93 const char *value, size_t size, gfp_t flags);
94 #endif /* __KERNEL__ */
96 #endif /* _LINUX_XATTR_H */