mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
79 lines
2.4 KiB
Go
79 lines
2.4 KiB
Go
// +build !windows
|
|
|
|
package daemon
|
|
|
|
import (
|
|
"os"
|
|
"sort"
|
|
"strconv"
|
|
|
|
"github.com/docker/docker/container"
|
|
"github.com/docker/docker/daemon/execdriver"
|
|
"github.com/docker/docker/volume"
|
|
)
|
|
|
|
// setupMounts iterates through each of the mount points for a container and
|
|
// calls Setup() on each. It also looks to see if is a network mount such as
|
|
// /etc/resolv.conf, and if it is not, appends it to the array of mounts.
|
|
func (daemon *Daemon) setupMounts(container *container.Container) ([]execdriver.Mount, error) {
|
|
var mounts []execdriver.Mount
|
|
for _, m := range container.MountPoints {
|
|
if err := daemon.lazyInitializeVolume(container.ID, m); err != nil {
|
|
return nil, err
|
|
}
|
|
path, err := m.Setup()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if !container.TrySetNetworkMount(m.Destination, path) {
|
|
mnt := execdriver.Mount{
|
|
Source: path,
|
|
Destination: m.Destination,
|
|
Writable: m.RW,
|
|
Propagation: m.Propagation,
|
|
}
|
|
if m.Volume != nil {
|
|
attributes := map[string]string{
|
|
"driver": m.Volume.DriverName(),
|
|
"container": container.ID,
|
|
"destination": m.Destination,
|
|
"read/write": strconv.FormatBool(m.RW),
|
|
"propagation": m.Propagation,
|
|
}
|
|
daemon.LogVolumeEvent(m.Volume.Name(), "mount", attributes)
|
|
}
|
|
mounts = append(mounts, mnt)
|
|
}
|
|
}
|
|
|
|
mounts = sortMounts(mounts)
|
|
netMounts := container.NetworkMounts()
|
|
// if we are going to mount any of the network files from container
|
|
// metadata, the ownership must be set properly for potential container
|
|
// remapped root (user namespaces)
|
|
rootUID, rootGID := daemon.GetRemappedUIDGID()
|
|
for _, mount := range netMounts {
|
|
if err := os.Chown(mount.Source, rootUID, rootGID); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return append(mounts, netMounts...), nil
|
|
}
|
|
|
|
// sortMounts sorts an array of mounts in lexicographic order. This ensure that
|
|
// when mounting, the mounts don't shadow other mounts. For example, if mounting
|
|
// /etc and /etc/resolv.conf, /etc/resolv.conf must not be mounted first.
|
|
func sortMounts(m []execdriver.Mount) []execdriver.Mount {
|
|
sort.Sort(mounts(m))
|
|
return m
|
|
}
|
|
|
|
// setBindModeIfNull is platform specific processing to ensure the
|
|
// shared mode is set to 'z' if it is null. This is called in the case
|
|
// of processing a named volume and not a typical bind.
|
|
func setBindModeIfNull(bind *volume.MountPoint) *volume.MountPoint {
|
|
if bind.Mode == "" {
|
|
bind.Mode = "z"
|
|
}
|
|
return bind
|
|
}
|