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