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unix: add CloseRange

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The close_range(2) syscall is available since Linux kernel v5.9,
with additional functionality of CLOSE_RANGE_CLOEXEC since v5.11.

No tests are required since this is a bare syscall.

Change-Id: I410470e3713e2005cc7acf24d1347938fe05ef63
Reviewed-on: https://go-review.googlesource.com/c/sys/+/301409
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
This commit is contained in:
Kir Kolyshkin
2021-03-13 11:07:37 +00:00
committed by Emmanuel Odeke
parent 68d13333fa
commit 8e9fff1a3a
4 changed files with 23 additions and 0 deletions
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unix/zsyscall_linux.go
+10
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@@ -532,6 +532,16 @@ func Close(fd int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func CloseRange(first uint, last uint, flags uint) (err error) {
_, _, e1 := Syscall(SYS_CLOSE_RANGE, uintptr(first), uintptr(last), uintptr(flags))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func CopyFileRange(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) {
r0, _, e1 := Syscall6(SYS_COPY_FILE_RANGE, uintptr(rfd), uintptr(unsafe.Pointer(roff)), uintptr(wfd), uintptr(unsafe.Pointer(woff)), uintptr(len), uintptr(flags))
n = int(r0)