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unix: add Pipe2 on dragonfly

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The pipe2 syscall is available since DragonflyBSD 4.2, see
https://www.dragonflybsd.org/release42/

Change-Id: I94631fd64ee731e416049cac5f3d15544f1337dd
Reviewed-on: https://go-review.googlesource.com/c/sys/+/271177
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Matt Layher <mdlayher@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
This commit is contained in:
Tobias Klauser
2020-11-19 10:28:17 +00:00
committed by Tobias Klauser
parent a01c418693
commit f84b799fce
2 changed files with 23 additions and 0 deletions
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unix/zsyscall_dragonfly_amd64.go
+10
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@@ -362,6 +362,16 @@ func pipe() (r int, w int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func pipe2(p *[2]_C_int, flags int) (err error) {
_, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func extpread(fd int, p []byte, flags int, offset int64) (n int, err error) {
var _p0 unsafe.Pointer
if len(p) > 0 {