* Added new library libgnu.so, which will contain GNU compatibility interfaces

(analoguously to libbsd.so).
* Added an implementation of the GNU/Linux xattr interface. xattrs are mapped
  to Haiku attributes with type B_XATTR_TYPE. Haiku attributes are mapped to
  xattrs by moving them into the "user.haiku." namespace and appending the
  type to their name. Complete, but utterly untested yet.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32427 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/gnu/sys/xattr.h

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2009, Haiku Inc. All Rights Reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * The GNU/Linux xattr interface. Actual xattrs are identity-mapped into the
+ * Haiku attribute namespace with type B_XATTR_TYPE. Haiku attributes are mapped
+ * into a user xattr namespace, the attribute types encoded in the names.
+ */
+#ifndef _GNU_SYS_CDEFS_H
+#define _GNU_SYS_CDEFS_H
+
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+
+/* constants for [l,f]setxattr() */
+#define XATTR_CREATE	1	/* fail if attribute exists */
+#define XATTR_REPLACE	2	/* fail if attribute doesn't exist yet */
+
+
+__BEGIN_DECLS
+
+
+ssize_t	getxattr(const char* path, const char* attribute, void* buffer,
+			size_t size);
+ssize_t	lgetxattr(const char* path, const char* attribute, void* buffer,
+			size_t size);
+ssize_t	fgetxattr(int fd, const char* attribute, void* buffer, size_t size);
+
+int		setxattr(const char* path, const char* attribute, const void* buffer,
+			size_t size, int flags);
+int		lsetxattr(const char* path, const char* attribute, const void* buffer,
+			size_t size, int flags);
+int		fsetxattr(int fd, const char* attribute, const void* buffer,
+			size_t size, int flags);
+
+int		removexattr (const char* path, const char* attribute);
+int		lremovexattr (const char* path, const char* attribute);
+int		fremovexattr (int fd, const char* attribute);
+
+ssize_t	listxattr(const char* path, char* buffer, size_t size);
+ssize_t	llistxattr(const char* path, char* buffer, size_t size);
+ssize_t	flistxattr(int fd, char* buffer, size_t size);
+
+
+__END_DECLS
+
+
+#endif	/* _GNU_SYS_CDEFS_H */