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-rw-r--r--cmd/podman/containers/cp.go21
1 files changed, 18 insertions, 3 deletions
diff --git a/cmd/podman/containers/cp.go b/cmd/podman/containers/cp.go
index d3b904412..7887e9539 100644
--- a/cmd/podman/containers/cp.go
+++ b/cmd/podman/containers/cp.go
@@ -121,7 +121,9 @@ func copyFromContainer(container string, containerPath string, hostPath string)
return err
}
+ isStdout := false
if hostPath == "-" {
+ isStdout = true
hostPath = os.Stdout.Name()
}
@@ -152,10 +154,16 @@ func copyFromContainer(container string, containerPath string, hostPath string)
hostBaseName = filepath.Base(hostInfo.LinkTarget)
}
+ if !isStdout {
+ if err := validateFileInfo(hostInfo); err != nil {
+ return errors.Wrap(err, "invalid destination")
+ }
+ }
+
reader, writer := io.Pipe()
hostCopy := func() error {
defer reader.Close()
- if hostInfo.LinkTarget == os.Stdout.Name() {
+ if isStdout {
_, err := io.Copy(os.Stdout, reader)
return err
}
@@ -223,8 +231,6 @@ func copyToContainer(container string, containerPath string, hostPath string) er
if hostPath == "-" {
hostPath = os.Stdin.Name()
isStdin = true
- } else if hostPath == os.Stdin.Name() {
- isStdin = true
}
// Make sure that host path exists.
@@ -363,3 +369,12 @@ func containerParentDir(container string, containerPath string) (string, error)
workDir = filepath.Join(workDir, containerPath)
return filepath.Dir(workDir), nil
}
+
+// validateFileInfo returns an error if the specified FileInfo doesn't point to
+// a directory or a regular file.
+func validateFileInfo(info *copy.FileInfo) error {
+ if info.Mode.IsDir() || info.Mode.IsRegular() {
+ return nil
+ }
+ return errors.Errorf("%q must be a directory or a regular file", info.LinkTarget)
+}