graphdriver/windows: Potential fix for access denied #50870
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Use `winio.RunWithPrivileges` to get the privileges. It's better because it also locks the Go runtime thread so if the Go scheduler decides to run this code on a different thread, it will still have the expected privileges. A naive attempt at fixing an error experienced by Docker Desktop user when using Windows containers: ``` failed to register layer: re-exec error: exit status 1: output: hcsshim::ProcessUtilityVMImage \\?\C:\ProgramData\Docker\windowsfilter\<hash1>\UtilityVM: Access is denied. failed to register layer: re-exec error: exit status 1: output: hcsshim::ProcessBaseLayer \\?\C:\ProgramData\Docker\windowsfilter\<hash2>: Access is denied. failed to register layer: re-exec error: exit status 1: output: hcsshim::ProcessBaseLayer \\?\C:\ProgramData\Docker\windowsfilter\<hash3>: Access is denied. ``` Unfortunately I can't reproduce the issue on a Windows VM, but this definitely won't hurt. At least, I verified that the daemon still works on Windows. Inspired by: containerd/containerd#8206 Signed-off-by: Paweł Gronowski <[email protected]>
robmry
approved these changes
Sep 2, 2025
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Use
winio.RunWithPrivilegesto get the privileges. It's better because it also locks the Go runtime thread so if the Go scheduler decides to run this code on a different thread, it will still have the expected privileges.A naive attempt at fixing an error experienced by Docker Desktop user when using Windows containers:
Unfortunately I can't reproduce the issue on a Windows VM, but this definitely won't hurt.
At least, I verified that the daemon still works on Windows.
Inspired by: containerd/containerd#8206
- What I did
- How I did it
- How to verify it
- Human readable description for the release notes
- A picture of a cute animal (not mandatory but encouraged)