[src/trunk]: src/sys/compat/linux/arch/alpha add the "special" pipe2.

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a045103b75df
branches:  trunk
changeset: 764199:a045103b75df
user:      christos <christos%NetBSD.org@localhost>
date:      Thu Apr 14 01:03:23 2011 +0000

description:
add the "special" pipe2.

diffstat:

 sys/compat/linux/arch/alpha/linux_pipe.c |  43 +++++++++++++++++++++++++++++--
 1 files changed, 40 insertions(+), 3 deletions(-)

diffs (79 lines):

diff -r 9aaa7b1fd1d1 -r a045103b75df sys/compat/linux/arch/alpha/linux_pipe.c
--- a/sys/compat/linux/arch/alpha/linux_pipe.c  Thu Apr 14 00:59:06 2011 +0000
+++ b/sys/compat/linux/arch/alpha/linux_pipe.c  Thu Apr 14 01:03:23 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_pipe.c,v 1.13 2008/04/28 20:23:42 martin Exp $   */
+/*     $NetBSD: linux_pipe.c,v 1.14 2011/04/14 01:03:23 christos Exp $ */
 
 /*-
  * Copyright (c) 1998 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_pipe.c,v 1.13 2008/04/28 20:23:42 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_pipe.c,v 1.14 2011/04/14 01:03:23 christos Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -40,12 +40,15 @@
 #include <sys/mman.h>
 #include <sys/mount.h>
 #include <sys/proc.h>
+#include <sys/filedesc.h>
+#include <sys/fcntl.h>
 
 #include <sys/syscallargs.h>
 
 #include <compat/linux/common/linux_types.h>
 #include <compat/linux/common/linux_mmap.h>
 #include <compat/linux/common/linux_signal.h>
+#include <compat/linux/common/linux_fcntl.h>
 
 #include <compat/linux/linux_syscallargs.h>
 
@@ -62,9 +65,43 @@
 {
        int error;
 
-       if ((error = sys_pipe(l, 0, retval)))
+       if ((error = pipe1(l, retval, 0)))
                return error;
 
        (l->l_md.md_tf)->tf_regs[FRAME_A4] = retval[1];
        return 0;
 }
+
+int
+linux_sys_pipe2(struct lwp *l, const linux_sys_pipe2_args *uap,
+    register_t *retval)
+{
+       /* {
+               syscallarg(int *) pfds;
+               syscallarg(int) flags;
+       } */
+       int error;
+       int flag = 0;
+
+       switch (SCARG(uap, flags)) {
+       case LINUX_O_CLOEXEC:
+               break;
+       case LINUX_O_NONBLOCK:
+       case LINUX_O_NONBLOCK|LINUX_O_CLOEXEC:
+               flag = O_NONBLOCK;
+               break;
+       default:
+               return EINVAL;
+       }
+
+       if ((error = pipe1(l, retval, flag)))
+               return error;
+
+       (l->l_md.md_tf)->tf_regs[FRAME_A4] = retval[1];
+
+       if (SCARG(uap, flags) & LINUX_O_CLOEXEC) {
+               fd_set_exclose(l, retval[0], true);
+               fd_set_exclose(l, retval[1], true);
+       }       
+       return 0;
+}