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unix: add SysctlUvmexp on OpenBSD

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OpenBSD uses sysctl with struct uvmexp to get information from the
virtual memory system of the kernel. Add type Uvmexp and the
SysctlUvmexp function to query this information.

This will be used in github.com/tklauser/go-sysconf to get
_SC_AVPHYS_PAGES on OpenBSD.

Change-Id: I96ded2d1be37e5307bab55e79b13234cc93d21e6
Reviewed-on: https://go-review.googlesource.com/c/139278
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Tobias Klauser
2018-10-03 14:57:07 +00:00
committed by Tobias Klauser
parent 219bb53033
commit 679a27dec1
7 changed files with 320 additions and 0 deletions
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unix/zerrors_openbsd_amd64.go
+4
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@@ -952,6 +952,7 @@ const (
MNT_NOATIME = 0x8000
MNT_NODEV = 0x10
MNT_NOEXEC = 0x4
MNT_NOPERM = 0x20
MNT_NOSUID = 0x8
MNT_NOWAIT = 0x2
MNT_QUOTA = 0x2000
@@ -959,6 +960,7 @@ const (
MNT_RELOAD = 0x40000
MNT_ROOTFS = 0x4000
MNT_SOFTDEP = 0x4000000
MNT_STALLED = 0x100000
MNT_SYNCHRONOUS = 0x2
MNT_UPDATE = 0x10000
MNT_VISFLAGMASK = 0x400ffff
@@ -1441,6 +1443,8 @@ const (
TIOCUCNTL_CBRK = 0x7a
TIOCUCNTL_SBRK = 0x7b
TOSTOP = 0x400000
UTIME_NOW = -0x2
UTIME_OMIT = -0x1
VDISCARD = 0xf
VDSUSP = 0xb
VEOF = 0x0