xattr.h 2.0 KB

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  1. /*
  2. File: linux/xattr.h
  3. Extended attributes handling.
  4. Copyright (C) 2001 by Andreas Gruenbacher <a.gruenbacher@computer.org>
  5. Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved.
  6. Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
  7. */
  8. #ifndef _LINUX_XATTR_H
  9. #define _LINUX_XATTR_H
  10. #define XATTR_CREATE 0x1 /* set value, fail if attr already exists */
  11. #define XATTR_REPLACE 0x2 /* set value, fail if attr does not exist */
  12. #ifdef __KERNEL__
  13. #include <linux/types.h>
  14. /* Namespaces */
  15. #define XATTR_OS2_PREFIX "os2."
  16. #define XATTR_OS2_PREFIX_LEN (sizeof (XATTR_OS2_PREFIX) - 1)
  17. #define XATTR_SECURITY_PREFIX "security."
  18. #define XATTR_SECURITY_PREFIX_LEN (sizeof (XATTR_SECURITY_PREFIX) - 1)
  19. #define XATTR_SYSTEM_PREFIX "system."
  20. #define XATTR_SYSTEM_PREFIX_LEN (sizeof (XATTR_SYSTEM_PREFIX) - 1)
  21. #define XATTR_TRUSTED_PREFIX "trusted."
  22. #define XATTR_TRUSTED_PREFIX_LEN (sizeof (XATTR_TRUSTED_PREFIX) - 1)
  23. #define XATTR_USER_PREFIX "user."
  24. #define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1)
  25. struct inode;
  26. struct dentry;
  27. struct xattr_handler {
  28. char *prefix;
  29. size_t (*list)(struct inode *inode, char *list, size_t list_size,
  30. const char *name, size_t name_len);
  31. int (*get)(struct inode *inode, const char *name, void *buffer,
  32. size_t size);
  33. int (*set)(struct inode *inode, const char *name, const void *buffer,
  34. size_t size, int flags);
  35. };
  36. ssize_t vfs_getxattr(struct dentry *, char *, void *, size_t);
  37. ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
  38. int vfs_setxattr(struct dentry *, char *, void *, size_t, int);
  39. int vfs_removexattr(struct dentry *, char *);
  40. ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size);
  41. ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
  42. int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags);
  43. int generic_removexattr(struct dentry *dentry, const char *name);
  44. #endif /* __KERNEL__ */
  45. #endif /* _LINUX_XATTR_H */