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|
// +build solaris,cgo
package sysinfo
import (
"bytes"
"os/exec"
"strconv"
"strings"
)
/*
#cgo LDFLAGS: -llgrp
#cgo CFLAGS: -Wall -Werror
#include <unistd.h>
#include <stdlib.h>
#include <sys/lgrp_user.h>
int getLgrpCount() {
lgrp_cookie_t lgrpcookie = LGRP_COOKIE_NONE;
uint_t nlgrps;
if ((lgrpcookie = lgrp_init(LGRP_VIEW_OS)) == LGRP_COOKIE_NONE) {
return -1;
}
nlgrps = lgrp_nlgrps(lgrpcookie);
return nlgrps;
}
*/
import "C"
// IsCPUSharesAvailable returns whether CPUShares setting is supported.
// We need FSS to be set as default scheduling class to support CPU Shares
func IsCPUSharesAvailable() bool {
cmd := exec.Command("/usr/sbin/dispadmin", "-d")
outBuf := new(bytes.Buffer)
errBuf := new(bytes.Buffer)
cmd.Stderr = errBuf
cmd.Stdout = outBuf
if err := cmd.Run(); err != nil {
return false
}
return (strings.Contains(outBuf.String(), "FSS"))
}
// New returns a new SysInfo, using the filesystem to detect which features
// the kernel supports.
//NOTE Solaris: If we change the below capabilities be sure
// to update verifyPlatformContainerSettings() in daemon_solaris.go
func New(quiet bool) *SysInfo {
sysInfo := &SysInfo{}
sysInfo.cgroupMemInfo = setCgroupMem(quiet)
sysInfo.cgroupCPUInfo = setCgroupCPU(quiet)
sysInfo.cgroupBlkioInfo = setCgroupBlkioInfo(quiet)
sysInfo.cgroupCpusetInfo = setCgroupCPUsetInfo(quiet)
sysInfo.IPv4ForwardingDisabled = false
sysInfo.AppArmor = false
return sysInfo
}
// setCgroupMem reads the memory information for Solaris.
func setCgroupMem(quiet bool) cgroupMemInfo {
return cgroupMemInfo{
MemoryLimit: true,
SwapLimit: true,
MemoryReservation: false,
OomKillDisable: false,
MemorySwappiness: false,
KernelMemory: false,
}
}
// setCgroupCPU reads the cpu information for Solaris.
func setCgroupCPU(quiet bool) cgroupCPUInfo {
return cgroupCPUInfo{
CPUShares: true,
CPUCfsPeriod: false,
CPUCfsQuota: true,
CPURealtimePeriod: false,
CPURealtimeRuntime: false,
}
}
// blkio switches are not supported in Solaris.
func setCgroupBlkioInfo(quiet bool) cgroupBlkioInfo {
return cgroupBlkioInfo{
BlkioWeight: false,
BlkioWeightDevice: false,
}
}
// setCgroupCPUsetInfo reads the cpuset information for Solaris.
func setCgroupCPUsetInfo(quiet bool) cgroupCpusetInfo {
return cgroupCpusetInfo{
Cpuset: true,
Cpus: getCPUCount(),
Mems: getLgrpCount(),
}
}
func getCPUCount() string {
ncpus := C.sysconf(C._SC_NPROCESSORS_ONLN)
if ncpus <= 0 {
return ""
}
return strconv.FormatInt(int64(ncpus), 16)
}
func getLgrpCount() string {
nlgrps := C.getLgrpCount()
if nlgrps <= 0 {
return ""
}
return strconv.FormatInt(int64(nlgrps), 16)
}
|
