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unix: on ARM GNU/Linux let Pipe fall back to pipe

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Follow CL 165217 which did this for package syscall.

Android O seems to require Pipe to call the pipe2 system call.
But kernel version 2.6.23 only supports pipe, not pipe2.
So try pipe2 first, then fall back to pipe.

Updates golang/go#30549

Change-Id: Icf21433fa046ff137c0265fa96410229def482f7
Reviewed-on: https://go-review.googlesource.com/c/sys/+/165297
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Tobias Klauser
2019-03-06 07:15:16 +00:00
committed by Tobias Klauser
parent 30e92a19ae
commit a98ae47d97
2 changed files with 16 additions and 0 deletions
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unix/zsyscall_linux_arm.go
+10
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@@ -1679,6 +1679,16 @@ func faccessat(dirfd int, path string, mode uint32) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func pipe(p *[2]_C_int) (err error) {
_, _, e1 := RawSyscall(SYS_PIPE, uintptr(unsafe.Pointer(p)), 0, 0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// 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 {