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_NAME_SMACK XATTR_SECURITY_PREFIX XATTR_SMACK_SUFFIX 44#define XATTR_NAME_SMACKIPIN XATTR_SECURITY_PREFIX XATTR_SMACK_IPIN 45#define XATTR_NAME_SMACKIPOUT XATTR_SECURITY_PREFIX XATTR_SMACK_IPOUT 46 47#define XATTR_CAPS_SUFFIX "capability" 48#define XATTR_NAME_CAPS XATTR_SECURITY_PREFIX XATTR_CAPS_SUFFIX 49 50struct inode; 51struct dentry; 52 53struct xattr_handler { 54 const char *prefix; 55 int flags; /* fs private flags passed back to the handlers */ 56 size_t (*list)(struct dentry *dentry, char *list, size_t list_size, 57 const char *name, size_t name_len, int handler_flags); 58 int (*get)(struct dentry *dentry, const char *name, void *buffer, 59 size_t size, int handler_flags); 60 int (*set)(struct dentry *dentry, const char *name, const void *buffer, 61 size_t size, int flags, int handler_flags); 62}; 63 64ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t); 65ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t); 66ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size); 67int __vfs_setxattr_noperm(struct dentry *, const char *, const void *, size_t, int); 68int vfs_setxattr(struct dentry *, const char *, const void *, size_t, int); 69int vfs_removexattr(struct dentry *, const char *); 70 71ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size); 72ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size); 73int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags); 74int generic_removexattr(struct dentry *dentry, const char *name); 75 76#endif /* __KERNEL__ */ 77 78#endif /* _LINUX_XATTR_H */ 79