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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
Download Patch File Download Diff File Expand all files Collapse all files
unix/syscall_openbsd.go
+17
View File
@@ -43,6 +43,23 @@ func nametomib(name string) (mib []_C_int, err error) {
return nil, EINVAL
}
func SysctlUvmexp(name string) (*Uvmexp, error) {
mib, err := sysctlmib(name)
if err != nil {
return nil, err
}
n := uintptr(SizeofUvmexp)
var u Uvmexp
if err := sysctl(mib, (*byte)(unsafe.Pointer(&u)), &n, nil, 0); err != nil {
return nil, err
}
if n != SizeofUvmexp {
return nil, EIO
}
return &u, nil
}
//sysnb pipe(p *[2]_C_int) (err error)
func Pipe(p []int) (err error) {
if len(p) != 2 {
unix/syscall_openbsd_test.go
+19
View File
@@ -0,0 +1,19 @@
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package unix_test
import (
"testing"
"golang.org/x/sys/unix"
)
func TestSysctlUvmexp(t *testing.T) {
uvm, err := unix.SysctlUvmexp("vm.uvmexp")
if err != nil {
t.Fatal(err)
}
t.Logf("free = %v", uvm.Free)
}
unix/types_openbsd.go
+7
View File
@@ -38,6 +38,7 @@ package unix
#include <sys/un.h>
#include <sys/utsname.h>
#include <sys/wait.h>
#include <uvm/uvmexp.h>
#include <net/bpf.h>
#include <net/if.h>
#include <net/if_dl.h>
@@ -263,3 +264,9 @@ const (
// Uname
type Utsname C.struct_utsname
// Uvmexp
const SizeofUvmexp = C.sizeof_struct_uvmexp
type Uvmexp C.struct_uvmexp
unix/zerrors_openbsd_amd64.go
+4
View File
@@ -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
unix/ztypes_openbsd_386.go
+91
View File
@@ -465,3 +465,94 @@ type Utsname struct {
Version [256]byte
Machine [256]byte
}
const SizeofUvmexp = 0x158
type Uvmexp struct {
Pagesize int32
Pagemask int32
Pageshift int32
Npages int32
Free int32
Active int32
Inactive int32
Paging int32
Wired int32
Zeropages int32
Reserve_pagedaemon int32
Reserve_kernel int32
Anonpages int32
Vnodepages int32
Vtextpages int32
Freemin int32
Freetarg int32
Inactarg int32
Wiredmax int32
Anonmin int32
Vtextmin int32
Vnodemin int32
Anonminpct int32
Vtextminpct int32
Vnodeminpct int32
Nswapdev int32
Swpages int32
Swpginuse int32
Swpgonly int32
Nswget int32
Nanon int32
Nanonneeded int32
Nfreeanon int32
Faults int32
Traps int32
Intrs int32
Swtch int32
Softs int32
Syscalls int32
Pageins int32
Obsolete_swapins int32
Obsolete_swapouts int32
Pgswapin int32
Pgswapout int32
Forks int32
Forks_ppwait int32
Forks_sharevm int32
Pga_zerohit int32
Pga_zeromiss int32
Zeroaborts int32
Fltnoram int32
Fltnoanon int32
Fltnoamap int32
Fltpgwait int32
Fltpgrele int32
Fltrelck int32
Fltrelckok int32
Fltanget int32
Fltanretry int32
Fltamcopy int32
Fltnamap int32
Fltnomap int32
Fltlget int32
Fltget int32
Flt_anon int32
Flt_acow int32
Flt_obj int32
Flt_prcopy int32
Flt_przero int32
Pdwoke int32
Pdrevs int32
Pdswout int32
Pdfreed int32
Pdscans int32
Pdanscan int32
Pdobscan int32
Pdreact int32
Pdbusy int32
Pdpageouts int32
Pdpending int32
Pddeact int32
Pdreanon int32
Pdrevnode int32
Pdrevtext int32
Fpswtch int32
Kmapent int32
}
unix/ztypes_openbsd_amd64.go
+91
View File
@@ -465,3 +465,94 @@ type Utsname struct {
Version [256]byte
Machine [256]byte
}
const SizeofUvmexp = 0x158
type Uvmexp struct {
Pagesize int32
Pagemask int32
Pageshift int32
Npages int32
Free int32
Active int32
Inactive int32
Paging int32
Wired int32
Zeropages int32
Reserve_pagedaemon int32
Reserve_kernel int32
Anonpages int32
Vnodepages int32
Vtextpages int32
Freemin int32
Freetarg int32
Inactarg int32
Wiredmax int32
Anonmin int32
Vtextmin int32
Vnodemin int32
Anonminpct int32
Vtextminpct int32
Vnodeminpct int32
Nswapdev int32
Swpages int32
Swpginuse int32
Swpgonly int32
Nswget int32
Nanon int32
Nanonneeded int32
Nfreeanon int32
Faults int32
Traps int32
Intrs int32
Swtch int32
Softs int32
Syscalls int32
Pageins int32
Obsolete_swapins int32
Obsolete_swapouts int32
Pgswapin int32
Pgswapout int32
Forks int32
Forks_ppwait int32
Forks_sharevm int32
Pga_zerohit int32
Pga_zeromiss int32
Zeroaborts int32
Fltnoram int32
Fltnoanon int32
Fltnoamap int32
Fltpgwait int32
Fltpgrele int32
Fltrelck int32
Fltrelckok int32
Fltanget int32
Fltanretry int32
Fltamcopy int32
Fltnamap int32
Fltnomap int32
Fltlget int32
Fltget int32
Flt_anon int32
Flt_acow int32
Flt_obj int32
Flt_prcopy int32
Flt_przero int32
Pdwoke int32
Pdrevs int32
Pdswout int32
Pdfreed int32
Pdscans int32
Pdanscan int32
Pdobscan int32
Pdreact int32
Pdbusy int32
Pdpageouts int32
Pdpending int32
Pddeact int32
Pdreanon int32
Pdrevnode int32
Pdrevtext int32
Fpswtch int32
Kmapent int32
}
unix/ztypes_openbsd_arm.go
+91
View File
@@ -458,3 +458,94 @@ type Utsname struct {
Version [256]byte
Machine [256]byte
}
const SizeofUvmexp = 0x158
type Uvmexp struct {
Pagesize int32
Pagemask int32
Pageshift int32
Npages int32
Free int32
Active int32
Inactive int32
Paging int32
Wired int32
Zeropages int32
Reserve_pagedaemon int32
Reserve_kernel int32
Anonpages int32
Vnodepages int32
Vtextpages int32
Freemin int32
Freetarg int32
Inactarg int32
Wiredmax int32
Anonmin int32
Vtextmin int32
Vnodemin int32
Anonminpct int32
Vtextminpct int32
Vnodeminpct int32
Nswapdev int32
Swpages int32
Swpginuse int32
Swpgonly int32
Nswget int32
Nanon int32
Nanonneeded int32
Nfreeanon int32
Faults int32
Traps int32
Intrs int32
Swtch int32
Softs int32
Syscalls int32
Pageins int32
Obsolete_swapins int32
Obsolete_swapouts int32
Pgswapin int32
Pgswapout int32
Forks int32
Forks_ppwait int32
Forks_sharevm int32
Pga_zerohit int32
Pga_zeromiss int32
Zeroaborts int32
Fltnoram int32
Fltnoanon int32
Fltnoamap int32
Fltpgwait int32
Fltpgrele int32
Fltrelck int32
Fltrelckok int32
Fltanget int32
Fltanretry int32
Fltamcopy int32
Fltnamap int32
Fltnomap int32
Fltlget int32
Fltget int32
Flt_anon int32
Flt_acow int32
Flt_obj int32
Flt_prcopy int32
Flt_przero int32
Pdwoke int32
Pdrevs int32
Pdswout int32
Pdfreed int32
Pdscans int32
Pdanscan int32
Pdobscan int32
Pdreact int32
Pdbusy int32
Pdpageouts int32
Pdpending int32
Pddeact int32
Pdreanon int32
Pdrevnode int32
Pdrevtext int32
Fpswtch int32
Kmapent int32
}