hurd: Fix __writev_nocancel_nostatus

* sysdeps/mach/hurd/Makefile [subdir=misc] (sysdep_routines): Add
writev_nocancel writev_nocancel_nostatus.
* sysdeps/mach/hurd/not-cancel.h (__writev_nocancel_nostatus): Replace
macro with function declaration (with hidden prototype in libc).
(__writev_nocancel): New function declaration (with hidden prototype in libc).
* sysdeps/mach/hurd/writev_nocancel_nostatus.c: New file.
* sysdeps/posix/writev_nocancel.c: New file, includes writev.c to make a
nocancel variant that calls __write_nocancel.
* sysdeps/posix/writev.c (writev): Do not define alias if __writev is
renamed.

1 files changed, 28 insertions, 0 deletions

diff --git a/sysdeps/mach/hurd/writev_nocancel_nostatus.c b/sysdeps/mach/hurd/writev_nocancel_nostatus.c
new file mode 100644
index 0000000000..6db24d1b53
--- /dev/null
+++ b/sysdeps/mach/hurd/writev_nocancel_nostatus.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 1991-2020 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, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <not-cancel.h>
+
+void
+__writev_nocancel_nostatus (int fd, const struct iovec *vector, int count)
+{
+  int save = errno;
+  __writev_nocancel (fd, vector, count);
+  __set_errno (save);
+}
+libc_hidden_weak (__writev_nocancel_nostatus)