ssize_t getxattr(const char *path, const char *name, void *value, size_t size); /* flags=0 */
ssize_t lgetxattr(const char *path, const char *name, void *value, size_t size); /* flags=AT_SYMLINK_NOFOLLOW */
ssize_t fgetxattr(int filedes, const char *name, void *value, size_t size);
int setxattr(const char *path, const char *name, const void *value, size_t size, int xflags); /* flags=0 */
int lsetxattr(const char *path, const char *name, const void *value, size_t size, int xflags); /* flags=AT_SYMLINK_NOFOLLOW */
int fsetxattr(int filedes, const char *name, const void *value, size_t size, int xflags);
ssize_t listxattr(const char *path, char *list, size_t size); /* flags=0 */
ssize_t llistxattr(const char *path, char *list, size_t size); /* flags=AT_SYMLINK_NOFOLLOW */
ssize_t flistxattr(int filedes, char *list, size_t size);
int removexattr(const char *path, const char *name); /* flags=0 */
int lremovexattr(const char *path, const char *name); /* flags=AT_SYMLINK_NOFOLLOW */
int fremovexattr(int filedes, const char *name);