Remove dependencies on obsolete __ARCH_WANT_SYSCALL_NO_FLAGS syscalls.
(aarch64 kernels only have the newer system calls.)
Also expose the new functionality that's exposed by glibc in our header files.
Change-Id: I45d2d168a03f88723d1f7fbf634701006a4843c5
diff --git a/libc/include/unistd.h b/libc/include/unistd.h
index 509ee5c..91b0d8d 100644
--- a/libc/include/unistd.h
+++ b/libc/include/unistd.h
@@ -114,7 +114,7 @@
extern int fchdir(int);
extern int rmdir(const char *);
extern int pipe(int *);
-#ifdef _GNU_SOURCE /* GLibc compatibility */
+#ifdef _GNU_SOURCE
extern int pipe2(int *, int);
#endif
extern int chroot(const char *);
@@ -145,6 +145,9 @@
extern int dup(int);
extern int dup2(int, int);
+#ifdef _GNU_SOURCE
+extern int dup3(int, int, int);
+#endif
extern int fcntl(int, int, ...);
extern int ioctl(int, int, ...);
extern int flock(int, int);