57 lines
1.5 KiB
Go
57 lines
1.5 KiB
Go
package native
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import (
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"fmt"
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"os"
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"os/exec"
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"strings"
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"github.com/Sirupsen/logrus"
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"github.com/opencontainers/runc/libcontainer/configs"
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)
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func genTmpfsPremountCmd(tmpDir string, fullDest string, dest string) []configs.Command {
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var premount []configs.Command
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tarPath, err := exec.LookPath("tar")
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if err != nil {
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logrus.Warn("tar command is not available for tmpfs mount: %s", err)
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return premount
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}
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if _, err = exec.LookPath("rm"); err != nil {
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logrus.Warn("rm command is not available for tmpfs mount: %s", err)
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return premount
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}
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tarFile := fmt.Sprintf("%s/%s.tar", tmpDir, strings.Replace(dest, "/", "_", -1))
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if _, err := os.Stat(fullDest); err == nil {
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premount = append(premount, configs.Command{
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Path: tarPath,
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Args: []string{"-cf", tarFile, "-C", fullDest, "."},
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})
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}
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return premount
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}
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func genTmpfsPostmountCmd(tmpDir string, fullDest string, dest string) []configs.Command {
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var postmount []configs.Command
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tarPath, err := exec.LookPath("tar")
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if err != nil {
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return postmount
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}
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rmPath, err := exec.LookPath("rm")
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if err != nil {
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return postmount
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}
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if _, err := os.Stat(fullDest); os.IsNotExist(err) {
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return postmount
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}
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tarFile := fmt.Sprintf("%s/%s.tar", tmpDir, strings.Replace(dest, "/", "_", -1))
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postmount = append(postmount, configs.Command{
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Path: tarPath,
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Args: []string{"-xf", tarFile, "-C", fullDest, "."},
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})
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return append(postmount, configs.Command{
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Path: rmPath,
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Args: []string{"-f", tarFile},
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})
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}
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