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| author | Jamie Liu <jamieliu@google.com> | 2020-05-07 14:00:36 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-05-07 14:01:53 -0700 |
| commit | 9115f26851b6f00ae01e9c130e3b5b342495c9e5 (patch) | |
| tree | 1bf2b1e7a6f461d82d34f68a6c607b8c2253bf63 /pkg/sentry/fsimpl/ext/filesystem.go | |
| parent | 1f4087e7cd6c3cc696e6b26446abd6c5214cfd67 (diff) | |
Allocate device numbers for VFS2 filesystems.
Updates #1197, #1198, #1672
PiperOrigin-RevId: 310432006
Diffstat (limited to 'pkg/sentry/fsimpl/ext/filesystem.go')
| -rw-r--r-- | pkg/sentry/fsimpl/ext/filesystem.go | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/pkg/sentry/fsimpl/ext/filesystem.go b/pkg/sentry/fsimpl/ext/filesystem.go index 77b644275..557963e03 100644 --- a/pkg/sentry/fsimpl/ext/filesystem.go +++ b/pkg/sentry/fsimpl/ext/filesystem.go @@ -64,6 +64,10 @@ type filesystem struct { // bgs represents all the block group descriptors for the filesystem. // Immutable after initialization. bgs []disklayout.BlockGroup + + // devMinor is this filesystem's device minor number. Immutable after + // initialization. + devMinor uint32 } // Compiles only if filesystem implements vfs.FilesystemImpl. @@ -366,7 +370,9 @@ func (fs *filesystem) StatFSAt(ctx context.Context, rp *vfs.ResolvingPath) (linu } // Release implements vfs.FilesystemImpl.Release. -func (fs *filesystem) Release() {} +func (fs *filesystem) Release() { + fs.vfsfs.VirtualFilesystem().PutAnonBlockDevMinor(fs.devMinor) +} // Sync implements vfs.FilesystemImpl.Sync. func (fs *filesystem) Sync(ctx context.Context) error { |