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authorRoland McGrath <roland@gnu.org>2007-11-12 00:10:51 +0000
committerRoland McGrath <roland@gnu.org>2007-11-12 00:10:51 +0000
commita48b8240283316cf996b79d4ef5275cbb6404a39 (patch)
treebf0d596b513379d13e61e930aa3aeca0abf68b25 /include
parent01e7fdbb7434ec51aee02044b8391c1ebdfb5698 (diff)
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2007-11-11 Roland McGrath <roland@frob.com>
* include/kernel-features.h: New file.
Diffstat (limited to 'include')
-rw-r--r--include/kernel-features.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/include/kernel-features.h b/include/kernel-features.h
new file mode 100644
index 0000000000..ad159aace8
--- /dev/null
+++ b/include/kernel-features.h
@@ -0,0 +1,31 @@
+/* Set flags signalling availability of certain operating system features.
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* This file can define __ASSUME_* macros checked by certain source files.
+ Almost none of these are used outside of sysdeps/unix/sysv/linux code.
+ But those referring to POSIX-level features like O_* flags can be. */
+
+#include <fcntl.h>
+
+/* If a system defines the O_CLOEXEC constant but it is sometimes ignored,
+ it must override this file to define __ASSUME_O_CLOEXEC conditionally
+ (or not at all) to indicate when O_CLOEXEC actually works. */
+#ifdef O_CLOEXEC
+# define __ASSUME_O_CLOEXEC 1
+#endif