diff options
| author | Kevin Krakauer <krakauer@google.com> | 2018-08-15 16:24:07 -0700 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2018-08-15 16:25:22 -0700 |
| commit | 635b0c45933cd841298b0c21a513a9169e849594 (patch) | |
| tree | 058bae2ead9f7f182baaf3491580b5a419cb6c94 /runsc/fsgofer/fsgofer.go | |
| parent | 2033f61aae6ff1b3e613d7bb9e9da273791a5176 (diff) | |
runsc fsgofer: Support dynamic serving of filesystems.
When multiple containers run inside a sentry, each container has its own root
filesystem and set of mounts. Containers are also added after sentry boot rather
than all configured and known at boot time.
The fsgofer needs to be able to serve the root filesystem of each container.
Thus, it must be possible to add filesystems after the fsgofer has already
started.
This change:
* Creates a URPC endpoint within the gofer process that listens for requests to
serve new content.
* Enables the sentry, when starting a new container, to add the new container's
filesystem.
* Mounts those new filesystems at separate roots within the sentry.
PiperOrigin-RevId: 208903248
Change-Id: Ifa91ec9c8caf5f2f0a9eead83c4a57090ce92068
Diffstat (limited to 'runsc/fsgofer/fsgofer.go')
| -rw-r--r-- | runsc/fsgofer/fsgofer.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/runsc/fsgofer/fsgofer.go b/runsc/fsgofer/fsgofer.go index 52cdc91a2..38263896a 100644 --- a/runsc/fsgofer/fsgofer.go +++ b/runsc/fsgofer/fsgofer.go @@ -66,6 +66,11 @@ func (f fileType) String() string { return "unknown" } +// ControlSocketAddr generates an abstract unix socket name for the given id. +func ControlSocketAddr(id string) string { + return fmt.Sprintf("\x00runsc-gofer.%s", id) +} + // Config sets configuration options for each attach point. type Config struct { // ROMount is set to true if this is a readonly mount. |