50 lines
916 B
Go
50 lines
916 B
Go
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// +build linux
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package nodes
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import (
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"fmt"
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"github.com/dotcloud/docker/pkg/system"
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"os"
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"path/filepath"
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"syscall"
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)
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// Default list of device nodes to copy
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var DefaultNodes = []string{
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"null",
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"zero",
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"full",
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"random",
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"urandom",
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"tty",
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}
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// CopyN copies the device node from the host into the rootfs
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func CopyN(rootfs string, nodesToCopy []string) error {
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oldMask := system.Umask(0000)
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defer system.Umask(oldMask)
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for _, node := range nodesToCopy {
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if err := Copy(rootfs, node); err != nil {
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return err
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}
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}
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return nil
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}
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func Copy(rootfs, node string) error {
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stat, err := os.Stat(filepath.Join("/dev", node))
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if err != nil {
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return err
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}
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var (
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dest = filepath.Join(rootfs, "dev", node)
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st = stat.Sys().(*syscall.Stat_t)
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)
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if err := system.Mknod(dest, st.Mode, int(st.Rdev)); err != nil && !os.IsExist(err) {
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return fmt.Errorf("copy %s %s", node, err)
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}
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return nil
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}
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