unix: add Pipe2 on dragonfly
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>
diff --git a/unix/syscall_dragonfly.go b/unix/syscall_dragonfly.go
index 842ab5a..a4f2944 100644
--- a/unix/syscall_dragonfly.go
+++ b/unix/syscall_dragonfly.go
@@ -105,6 +105,19 @@
return
}
+//sysnb pipe2(p *[2]_C_int, flags int) (err error)
+
+func Pipe2(p []int, flags int) error {
+ if len(p) != 2 {
+ return EINVAL
+ }
+ var pp [2]_C_int
+ err := pipe2(&pp, flags)
+ p[0] = int(pp[0])
+ p[1] = int(pp[1])
+ return err
+}
+
//sys extpread(fd int, p []byte, flags int, offset int64) (n int, err error)
func Pread(fd int, p []byte, offset int64) (n int, err error) {
return extpread(fd, p, 0, offset)
diff --git a/unix/zsyscall_dragonfly_amd64.go b/unix/zsyscall_dragonfly_amd64.go
index aebfe51..1aaccd3 100644
--- a/unix/zsyscall_dragonfly_amd64.go
+++ b/unix/zsyscall_dragonfly_amd64.go
@@ -362,6 +362,16 @@
// 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 {
