commit 532bc5f11ca47cdcdf96128800685f0b214f801c
author Dave Cheney <dave@cheney.net> Mon Mar 09 07:03:00 2015 +1100
committer Dave Cheney <dave@cheney.net> Tue Mar 10 22:52:09 2015 +0000
tree 2d43a3e9005d8fee2d561cb12f5a1445f8bd0a4b
parent f00c19add5b5bd2126af689563ad24013e12faa9

syscall: exec_linux.go: support platforms without SYS_DUP2

Updates #9974

This change is in preparation for merging the arm64 platform.

Arm64 does not support SYS_DUP2 at all, so define a new constant to be
the minimum dup(2) version supported. This constant defaults to SYS_DUP2
on all existing platforms.

Change-Id: If405878105082c7c880f8541c1491970124c9ce4
Reviewed-on: https://go-review.googlesource.com/7123
Reviewed-by: Minux Ma <minux@golang.org>
Run-TryBot: Minux Ma <minux@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dave Cheney <dave@cheney.net>

src/syscall/syscall_linux_386.go

diff --git a/src/syscall/syscall_linux_386.go b/src/syscall/syscall_linux_386.go
index 0dcc6be..61ff233 100644
--- a/src/syscall/syscall_linux_386.go
+++ b/src/syscall/syscall_linux_386.go
@@ -9,6 +9,8 @@
 
 import "unsafe"
 
+const _SYS_dup = SYS_DUP2
+
 func Getpagesize() int { return 4096 }
 
 func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }