diff options
Diffstat (limited to 'pkg/sentry/kernel/kernel.go')
| -rw-r--r-- | pkg/sentry/kernel/kernel.go | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/pkg/sentry/kernel/kernel.go b/pkg/sentry/kernel/kernel.go index 419a1d473..cb43fdcdc 100644 --- a/pkg/sentry/kernel/kernel.go +++ b/pkg/sentry/kernel/kernel.go @@ -504,6 +504,14 @@ type CreateProcessArgs struct { // IPCNamespace is the initial IPC namespace. IPCNamespace *IPCNamespace + + // Root optionally contains the dirent that serves as the root for the + // process. If nil, the mount namespace's root is used as the process' + // root. + // + // Anyone setting Root must donate a reference (i.e. increment it) to + // keep it alive until it is decremented by CreateProcess. + Root *fs.Dirent } // NewContext returns a context.Context that represents the task that will be @@ -581,8 +589,12 @@ func (k *Kernel) CreateProcess(args CreateProcessArgs) (*ThreadGroup, error) { ctx := args.NewContext(k) // Grab the root directory. - root := fs.RootFromContext(ctx) + root := args.Root + if root == nil { + root = fs.RootFromContext(ctx) + } defer root.DecRef() + args.Root = nil // Grab the working directory. wd := root // Default. |