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moby--moby/libcontainerd/utils_linux.go
Amit Krishnan 934328d8ea Add functional support for Docker sub commands on Solaris
Signed-off-by: Amit Krishnan <krish.amit@gmail.com>

Signed-off-by: Alexander Morozov <lk4d4@docker.com>
2016-11-07 09:06:34 -08:00

62 lines
1.2 KiB
Go

package libcontainerd
import (
"syscall"
containerd "github.com/docker/containerd/api/grpc/types"
"github.com/opencontainers/runtime-spec/specs-go"
)
func getRootIDs(s specs.Spec) (int, int, error) {
var hasUserns bool
for _, ns := range s.Linux.Namespaces {
if ns.Type == specs.UserNamespace {
hasUserns = true
break
}
}
if !hasUserns {
return 0, 0, nil
}
uid := hostIDFromMap(0, s.Linux.UIDMappings)
gid := hostIDFromMap(0, s.Linux.GIDMappings)
return uid, gid, nil
}
func hostIDFromMap(id uint32, mp []specs.IDMapping) int {
for _, m := range mp {
if id >= m.ContainerID && id <= m.ContainerID+m.Size-1 {
return int(m.HostID + id - m.ContainerID)
}
}
return 0
}
func systemPid(ctr *containerd.Container) uint32 {
var pid uint32
for _, p := range ctr.Processes {
if p.Pid == InitFriendlyName {
pid = p.SystemPid
}
}
return pid
}
func convertRlimits(sr []specs.Rlimit) (cr []*containerd.Rlimit) {
for _, r := range sr {
cr = append(cr, &containerd.Rlimit{
Type: r.Type,
Hard: r.Hard,
Soft: r.Soft,
})
}
return
}
// setPDeathSig sets the parent death signal to SIGKILL
func setSysProcAttr(sid bool) *syscall.SysProcAttr {
return &syscall.SysProcAttr{
Setsid: sid,
Pdeathsig: syscall.SIGKILL,
}
}