include/c: Define F_DUPFD_CLOEXEC on kFreeBSD systems if missing

The kernel of FreeBSD version 10 and higher supports this fcntl command,
but the system libc, in this case glibc, might not yet know about it.

Signed-off-by: Guillem Jover <guillem@hadrons.org>

diff --git a/include/c.h b/include/c.h
index a72e2641c4113a1752a0dba730950fdb9500623b..1eda75f6b48f3bfb7998bf6b0ca90afab7dc30c3 100644 (file)
--- a/include/c.h
+++ b/include/c.h
@@ -231,6 +231,12 @@ static inline int dirfd(DIR *d)
 #define O_CLOEXEC 0
 #endif
 
+#ifdef __FreeBSD_kernel__
+#ifndef F_DUPFD_CLOEXEC
+#define F_DUPFD_CLOEXEC        17      /* Like F_DUPFD, but FD_CLOEXEC is set */
+#endif
+#endif
+
 
 #ifndef AI_ADDRCONFIG
 #define AI_ADDRCONFIG 0x0020