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syscall: make linux Dup2 match other systems

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You could argue for changing all the others, but
Linux is outvoted, and the only time it matters
is when newfd==-1, in which case you can call Dup.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5650073
This commit is contained in:
Russ Cox 2012-02-13 00:11:36 -05:00
parent 878153682e
commit 65ba8ee07e
4 changed files with 7 additions and 10 deletions
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5
src/pkg/syscall/zsyscall_linux_arm.go
View file

@ -210,9 +210,8 @@ func Dup(oldfd int) (fd int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Dup2(oldfd int, newfd int) (fd int, err error) {
r0, _, e1 := RawSyscall(SYS_DUP2, uintptr(oldfd), uintptr(newfd), 0)
fd = int(r0)
func Dup2(oldfd int, newfd int) (err error) {
_, _, e1 := RawSyscall(SYS_DUP2, uintptr(oldfd), uintptr(newfd), 0)
if e1 != 0 {
err = e1
}