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-rw-r--r--libc/sysdeps/linux/common/bits/kernel-features.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/bits/kernel-features.h b/libc/sysdeps/linux/common/bits/kernel-features.h
index b338e0770..6bf554457 100644
--- a/libc/sysdeps/linux/common/bits/kernel-features.h
+++ b/libc/sysdeps/linux/common/bits/kernel-features.h
@@ -309,6 +309,19 @@
# define __ASSUME_O_CLOEXEC 1
#endif
+/* Support for various CLOEXEC and NONBLOCK flags was added for x86,
+ * x86-64, PPC, IA-64, and SPARC in 2.6.27. */
+#if __LINUX_KERNEL_VERSION >= 0x02061b \
+ && (defined __i386__ || defined __x86_64__ || defined __powerpc__ \
+ || defined __ia64__ || defined __sparc__ || defined __s390__)
+/* # define __ASSUME_SOCK_CLOEXEC 1 */
+/* # define __ASSUME_IN_NONBLOCK 1 */
+# define __ASSUME_PIPE2 1
+/* # define __ASSUME_EVENTFD2 1 */
+/* # define __ASSUME_SIGNALFD4 1 */
+#endif
+
+
/* These features were surely available with 2.4.12. */
#if __LINUX_KERNEL_VERSION >= 132108 && defined __mc68000__
# define __ASSUME_MMAP2_SYSCALL 1