c1f8606d50
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
package namespaces
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import (
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"fmt"
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"github.com/dotcloud/docker/pkg/libcontainer"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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)
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func addEnvIfNotSet(container *libcontainer.Container, key, value string) {
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jv := fmt.Sprintf("%s=%s", key, value)
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if len(container.Command.Env) == 0 {
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container.Command.Env = []string{jv}
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return
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}
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for _, v := range container.Command.Env {
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parts := strings.Split(v, "=")
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if parts[0] == key {
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return
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}
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}
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container.Command.Env = append(container.Command.Env, jv)
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}
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// getNsFd returns the fd for a specific pid and namespace option
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func getNsFd(pid int, ns string) (uintptr, error) {
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nspath := filepath.Join("/proc", strconv.Itoa(pid), "ns", ns)
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// OpenFile adds closOnExec
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f, err := os.OpenFile(nspath, os.O_RDONLY, 0666)
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if err != nil {
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return 0, err
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}
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return f.Fd(), nil
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}
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// setupEnvironment adds additional environment variables to the container's
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// Command such as USER, LOGNAME, container, and TERM
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func setupEnvironment(container *libcontainer.Container) {
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addEnvIfNotSet(container, "container", "docker")
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// TODO: check if pty
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addEnvIfNotSet(container, "TERM", "xterm")
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// TODO: get username from container
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addEnvIfNotSet(container, "USER", "root")
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addEnvIfNotSet(container, "LOGNAME", "root")
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}
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