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unix: drop fallback to pipe in Pipe on linux/arm

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Same as CL 347349 does for package syscall.

The minimum required Linux kernel version for Go 1.18 will be changed to
2.6.32, see golang/go#45964. The pipe2 syscall was added in 2.6.27, so
the fallback to use the pipe syscall in syscall.Pipe on linux/arm can
be removed.

For golang/go#45964

Change-Id: I8e222dc4b373b22f91bc1ddcc48f58a37dafcffa
Reviewed-on: https://go-review.googlesource.com/c/sys/+/347331
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matt Layher <mdlayher@gmail.com>
This commit is contained in:
Tobias Klauser
2021-09-03 07:16:34 +00:00
committed by Tobias Klauser
parent f475640dd0
commit 0a7ae4be8d
1 changed files with 0 additions and 4 deletions
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unix/syscall_linux_arm.go
-4
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@@ -26,11 +26,7 @@ func Pipe(p []int) (err error) {
return EINVAL return EINVAL
} }
var pp [2]_C_int var pp [2]_C_int
// Try pipe2 first for Android O, then try pipe for kernel 2.6.23.
err = pipe2(&pp, 0) err = pipe2(&pp, 0)
if err == ENOSYS {
err = pipe(&pp)
}
p[0] = int(pp[0]) p[0] = int(pp[0])
p[1] = int(pp[1]) p[1] = int(pp[1])
return return