1 /* 2 File: linux/xattr.h 3 4 Extended attributes handling. 5 6 Copyright (C) 2001 by Andreas Gruenbacher <a.gruenbacher (at) computer.org> 7 Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved. 8 Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris (at) 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 /* Namespaces */ 17 #define XATTR_OS2_PREFIX "os2." 18 #define XATTR_OS2_PREFIX_LEN (sizeof (XATTR_OS2_PREFIX) - 1) 19 20 #define XATTR_SECURITY_PREFIX "security." 21 #define XATTR_SECURITY_PREFIX_LEN (sizeof (XATTR_SECURITY_PREFIX) - 1) 22 23 #define XATTR_SYSTEM_PREFIX "system." 24 #define XATTR_SYSTEM_PREFIX_LEN (sizeof (XATTR_SYSTEM_PREFIX) - 1) 25 26 #define XATTR_TRUSTED_PREFIX "trusted." 27 #define XATTR_TRUSTED_PREFIX_LEN (sizeof (XATTR_TRUSTED_PREFIX) - 1) 28 29 #define XATTR_USER_PREFIX "user." 30 #define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1) 31 32 33 struct xattr_handler { 34 char *prefix; 35 size_t (*list)(struct inode *inode, char *list, size_t list_size, 36 const char *name, size_t name_len); 37 int (*get)(struct inode *inode, const char *name, void *buffer, 38 size_t size); 39 int (*set)(struct inode *inode, const char *name, const void *buffer, 40 size_t size, int flags); 41 }; 42 43 ssize_t vfs_getxattr(struct dentry *, char *, void *, size_t); 44 int vfs_setxattr(struct dentry *, char *, void *, size_t, int); 45 int vfs_removexattr(struct dentry *, char *); 46 47 ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size); 48 ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size); 49 int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags); 50 int generic_removexattr(struct dentry *dentry, const char *name); 51 52 #endif /* _LINUX_XATTR_H */ 53
