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642fa98976
This includes two new hidden commands: a 9p server, `podman machine server9p`, and a 9p client, `podman machine client9p` with `server9p` currently only configured to run on Windows and serve 9p via HyperV vsock, and `client9p` only configured to run on Linux. The server is run by `podman machine start` and has the same lifespan as gvproxy (waits for the gvproxy PID to die before shutting down). The client is run inside the VM, also by `podman machine start`, and mounts uses kernel 9p mount code to complete the mount. It's unfortunately not possible to use mount directly without the wrapper; we need to set up the vsock and pass it to mount as an FD. In theory this can be generalized so that the server can run anywhere and over almost any transport, but I haven't done this here as I don't think we have a usecase other than HyperV right now. [NO NEW TESTS NEEDED] This requires changes to Podman in the VM, so we need to wait until a build with this lands in FCOS to test. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
package localfs
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import (
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"os"
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"github.com/hugelgupf/p9/linux"
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"github.com/hugelgupf/p9/p9"
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"golang.org/x/sys/windows"
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)
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func umask(_ int) int {
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return 0
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}
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func localToQid(path string, info os.FileInfo) (uint64, error) {
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pathPtr, err := windows.UTF16PtrFromString(path)
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if err != nil {
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return 0, err
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}
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var (
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access uint32 // none; we only need metadata
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sharemode uint32
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createmode uint32 = windows.OPEN_EXISTING
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attribute uint32 = windows.FILE_ATTRIBUTE_NORMAL
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)
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if info.IsDir() {
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attribute = windows.FILE_FLAG_BACKUP_SEMANTICS
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}
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fd, err := windows.CreateFile(pathPtr, access, sharemode, nil, createmode, attribute, 0)
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if err != nil {
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return 0, err
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}
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fi := &windows.ByHandleFileInformation{}
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if err = windows.GetFileInformationByHandle(fd, fi); err != nil {
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return 0, err
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}
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x := uint64(fi.FileIndexHigh)<<32 | uint64(fi.FileIndexLow)
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return x, nil
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}
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// lock implements p9.File.Lock.
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// As in FreeBSD NFS locking, we just say "sure, we did it" without actually
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// doing anything; this lock design makes even less sense on Windows than
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// it does on Linux (pid? really? what were they thinking?)
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func (l *Local) lock(pid int, locktype p9.LockType, flags p9.LockFlags, start, length uint64, client string) (p9.LockStatus, error) {
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return p9.LockStatusOK, linux.ENOSYS
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}
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