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moby--moby/pkg/sysinfo/sysinfo.go
Victor Vieux 0a37f836ad update sysinfo to logrus
Signed-off-by: Victor Vieux <vieux@docker.com>
2014-10-27 18:59:02 +00:00

47 lines
1.3 KiB
Go

package sysinfo
import (
"io/ioutil"
"os"
"path"
log "github.com/Sirupsen/logrus"
"github.com/docker/libcontainer/cgroups"
)
type SysInfo struct {
MemoryLimit bool
SwapLimit bool
IPv4ForwardingDisabled bool
AppArmor bool
}
func New(quiet bool) *SysInfo {
sysInfo := &SysInfo{}
if cgroupMemoryMountpoint, err := cgroups.FindCgroupMountpoint("memory"); err != nil {
if !quiet {
log.Printf("WARNING: %s\n", err)
}
} else {
_, err1 := ioutil.ReadFile(path.Join(cgroupMemoryMountpoint, "memory.limit_in_bytes"))
_, err2 := ioutil.ReadFile(path.Join(cgroupMemoryMountpoint, "memory.soft_limit_in_bytes"))
sysInfo.MemoryLimit = err1 == nil && err2 == nil
if !sysInfo.MemoryLimit && !quiet {
log.Printf("WARNING: Your kernel does not support cgroup memory limit.")
}
_, err = ioutil.ReadFile(path.Join(cgroupMemoryMountpoint, "memory.memsw.limit_in_bytes"))
sysInfo.SwapLimit = err == nil
if !sysInfo.SwapLimit && !quiet {
log.Printf("WARNING: Your kernel does not support cgroup swap limit.")
}
}
// Check if AppArmor seems to be enabled on this system.
if _, err := os.Stat("/sys/kernel/security/apparmor"); os.IsNotExist(err) {
sysInfo.AppArmor = false
} else {
sysInfo.AppArmor = true
}
return sysInfo
}