move accept4, dup3, and pipe2 to non-linux-specific locations

these interfaces have been adopted by the Austin Group for inclusion
in the next version of POSIX.

2 files changed, 18 insertions, 0 deletions

diff --git a/src/unistd/dup3.c b/src/unistd/dup3.c
new file mode 100644
index 00000000..18f6fcce
--- /dev/null
+++ b/src/unistd/dup3.c
@@ -0,0 +1,10 @@
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <errno.h>
+#include "syscall.h"
+
+int dup3(int old, int new, int flags) {
+	int r;
+	while ((r=__syscall(SYS_dup3, old, new, flags))==-EBUSY);
+	return __syscall_ret(r);
+}
diff --git a/src/unistd/pipe2.c b/src/unistd/pipe2.c
new file mode 100644
index 00000000..83282bb9
--- /dev/null
+++ b/src/unistd/pipe2.c
@@ -0,0 +1,8 @@
+#define _GNU_SOURCE
+#include <unistd.h>
+#include "syscall.h"
+
+int pipe2(int fd[2], int flg)
+{
+	return syscall(SYS_pipe2, fd, flg);
+}