[Windows] podman machine > podman export error

[nunix]

Is this a BUG REPORT or FEATURE REQUEST? (leave only one on its own line)

/kind bug

Description

When trying to export a container to a tar.gz file on Windows (using podman machine as the backend), there's an error about the : due to the Windows path.
The \ are correctly escaped but not the : .

Steps to reproduce the issue:

All steps below are done in Powershell

1. podman machine init
2. podman machine start
3. podman run --name fedora fedora
4. podman export -o c:\wslsources\fedora.tar.gz fedora
5. error thrown

As a workaround, here is a different Windows path that works:

1. podman export -o /wslsources/fedora.tar.gz fedora

Describe the results you received:

The export results in the following error (based on the example above):
Error: invalid filename (should not contain ':') "C:\\wslsources\\fedora-latest.tar.gz"

Describe the results you expected:

The container is exported successfully and the file created.

Additional information you deem important (e.g. issue happens only occasionally):

N/A

Output of podman version:

Client:       Podman Engine
Version:      4.1.1
API Version:  4.1.1
Go Version:   go1.16.15
Git Commit:   f73d8f8875c2be7cd2049094c29aff90b1150241
Built:        Wed Jun 15 15:17:12 2022
OS/Arch:      windows/amd64

Server:       Podman Engine
Version:      4.2.0-rc3
API Version:  4.2.0-rc3
Go Version:   go1.16.15
Built:        Fri Aug  5 22:18:20 2022
OS/Arch:      linux/amd64

Output of podman info:

host:
  arch: amd64
  buildahVersion: 1.27.0-dev
  cgroupControllers: []
  cgroupManager: cgroupfs
  cgroupVersion: v1
  conmon:
    package: conmon-2.1.3-1.fc35.x86_64
    path: /usr/bin/conmon
    version: 'conmon version 2.1.3, commit: '
  cpuUtilization:
    idlePercent: 99.58
    systemPercent: 0.12
    userPercent: 0.3
  cpus: 16
  distribution:
    distribution: fedora
    variant: container
    version: "35"
  eventLogger: file
  hostname: leviathanix
  idMappings:
    gidmap:
    - container_id: 0
      host_id: 1000
      size: 1
    - container_id: 1
      host_id: 100000
      size: 65536
    uidmap:
    - container_id: 0
      host_id: 1000
      size: 1
    - container_id: 1
      host_id: 100000
      size: 65536
  kernel: 5.15.57.1-microsoft-standard-WSL2
  linkmode: dynamic
  logDriver: journald
  memFree: 24032718848
  memTotal: 25204072448
  networkBackend: netavark
  ociRuntime:
    name: crun
    package: crun-1.5-1.fc35.x86_64
    path: /usr/bin/crun
    version: |-
      crun version 1.5
      commit: 54ebb8ca8bf7e6ddae2eb919f5b82d1d96863dea
      spec: 1.0.0
      +SYSTEMD +SELINUX +APPARMOR +CAP +SECCOMP +EBPF +CRIU +YAJL
  os: linux
  remoteSocket:
    exists: true
    path: /run/user/1000/podman/podman.sock
  security:
    apparmorEnabled: false
    capabilities: CAP_CHOWN,CAP_DAC_OVERRIDE,CAP_FOWNER,CAP_FSETID,CAP_KILL,CAP_NET_BIND_SERVICE,CAP_SETFCAP,CAP_SETGID,CAP_SETPCAP,CAP_SETUID,CAP_SYS_CHROOT
    rootless: true
    seccompEnabled: true
    seccompProfilePath: /usr/share/containers/seccomp.json
    selinuxEnabled: false
  serviceIsRemote: true
  slirp4netns:
    executable: /usr/bin/slirp4netns
    package: slirp4netns-1.1.12-2.fc35.x86_64
    version: |-
      slirp4netns version 1.1.12
      commit: 7a104a101aa3278a2152351a082a6df71f57c9a3
      libslirp: 4.6.1
      SLIRP_CONFIG_VERSION_MAX: 3
      libseccomp: 2.5.3
  swapFree: 0
  swapTotal: 0
  uptime: 0h 14m 12.00s
plugins:
  log:
  - k8s-file
  - none
  - passthrough
  - journald
  network:
  - bridge
  - macvlan
  volume:
  - local
registries:
  search:
  - registry.fedoraproject.org
  - registry.access.redhat.com
  - docker.io
  - quay.io
store:
  configFile: /home/user/.config/containers/storage.conf
  containerStore:
    number: 2
    paused: 0
    running: 0
    stopped: 2
  graphDriverName: overlay
  graphOptions: {}
  graphRoot: /home/user/.local/share/containers/storage
  graphRootAllocated: 1081101176832
  graphRootUsed: 1039216640
  graphStatus:
    Backing Filesystem: extfs
    Native Overlay Diff: "true"
    Supports d_type: "true"
    Using metacopy: "false"
  imageCopyTmpDir: /var/tmp
  imageStore:
    number: 2
  runRoot: /run/user/1000/containers
  volumePath: /home/user/.local/share/containers/storage/volumes
version:
  APIVersion: 4.2.0-rc3
  Built: 1659730700
  BuiltTime: Fri Aug  5 22:18:20 2022
  GitCommit: ""
  GoVersion: go1.16.15
  Os: linux
  OsArch: linux/amd64
  Version: 4.2.0-rc3

Package info (e.g. output of rpm -q podman or apt list podman):

N/A -> using the default podman machine setup.

Have you tested with the latest version of Podman and have you checked the Podman Troubleshooting Guide? (https://github.com/containers/podman/blob/main/troubleshooting.md)

Yes

Additional environment details (AWS, VirtualBox, physical, etc.):
Podman on Windows using WSL2

[mheon]

@n1hility PTAL

[baude]

@mheon this really has nothing to do with machine (i think). we should look at it. ill poke it now

[n1hility]

Yeah, this is probably just a path validation portability issue. Sorry I had not had time to look at it. I have a full plate atm. Thanks for taking a look @baude

[n1hility]

(BTW promise as soon as I finish this major win installer revamp, I will dive into my backlog)