8194556337
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
package sysinfo
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import (
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"io/ioutil"
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"log"
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"os"
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"path"
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"github.com/docker/libcontainer/cgroups"
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)
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type SysInfo struct {
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MemoryLimit bool
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SwapLimit bool
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IPv4ForwardingDisabled bool
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AppArmor bool
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}
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func New(quiet bool) *SysInfo {
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sysInfo := &SysInfo{}
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if cgroupMemoryMountpoint, err := cgroups.FindCgroupMountpoint("memory"); err != nil {
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if !quiet {
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log.Printf("WARNING: %s\n", err)
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}
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} else {
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_, err1 := ioutil.ReadFile(path.Join(cgroupMemoryMountpoint, "memory.limit_in_bytes"))
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_, err2 := ioutil.ReadFile(path.Join(cgroupMemoryMountpoint, "memory.soft_limit_in_bytes"))
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sysInfo.MemoryLimit = err1 == nil && err2 == nil
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if !sysInfo.MemoryLimit && !quiet {
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log.Printf("WARNING: Your kernel does not support cgroup memory limit.")
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}
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_, err = ioutil.ReadFile(path.Join(cgroupMemoryMountpoint, "memory.memsw.limit_in_bytes"))
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sysInfo.SwapLimit = err == nil
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if !sysInfo.SwapLimit && !quiet {
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log.Printf("WARNING: Your kernel does not support cgroup swap limit.")
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}
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}
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// Check if AppArmor seems to be enabled on this system.
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if _, err := os.Stat("/sys/kernel/security/apparmor"); os.IsNotExist(err) {
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sysInfo.AppArmor = false
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} else {
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sysInfo.AppArmor = true
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}
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return sysInfo
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}
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