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Diffstat (limited to 'runsc/sandbox/sandbox.go')
-rw-r--r--runsc/sandbox/sandbox.go68
1 files changed, 50 insertions, 18 deletions
diff --git a/runsc/sandbox/sandbox.go b/runsc/sandbox/sandbox.go
index a19b1d124..bf17f62d9 100644
--- a/runsc/sandbox/sandbox.go
+++ b/runsc/sandbox/sandbox.go
@@ -73,15 +73,47 @@ type Sandbox struct {
statusMu sync.Mutex
}
+// Args is used to configure a new sandbox.
+type Args struct {
+ // ID is the sandbox unique identifier.
+ ID string
+
+ // Spec is the OCI spec that describes the container.
+ Spec *specs.Spec
+
+ // BundleDir is the directory containing the container bundle.
+ BundleDir string
+
+ // ConsoleSocket is the path to a unix domain socket that will receive
+ // the console FD. It may be empty.
+ ConsoleSocket string
+
+ // UserLog is the filename to send user-visible logs to. It may be empty.
+ UserLog string
+
+ // IOFiles is the list of files that connect to a 9P endpoint for the mounts
+ // points using Gofers. They must be in the same order as mounts appear in
+ // the spec.
+ IOFiles []*os.File
+
+ // MountsFile is a file container mount information from the spec. It's
+ // equivalent to the mounts from the spec, except that all paths have been
+ // resolved to their final absolute location.
+ MountsFile *os.File
+
+ // Gcgroup is the cgroup that the sandbox is part of.
+ Cgroup *cgroup.Cgroup
+}
+
// New creates the sandbox process. The caller must call Destroy() on the
// sandbox.
-func New(id string, spec *specs.Spec, conf *boot.Config, bundleDir, consoleSocket, userLog string, ioFiles []*os.File, specFile *os.File, cg *cgroup.Cgroup) (*Sandbox, error) {
- s := &Sandbox{ID: id, Cgroup: cg}
+func New(conf *boot.Config, args *Args) (*Sandbox, error) {
+ s := &Sandbox{ID: args.ID, Cgroup: args.Cgroup}
// The Cleanup object cleans up partially created sandboxes when an error
// occurs. Any errors occurring during cleanup itself are ignored.
c := specutils.MakeCleanup(func() {
err := s.destroy()
- log.Warningf("error destroying sandbox: %v", err)
+ log.Warningf("error Ndestroying sandbox: %v", err)
})
defer c.Clean()
@@ -93,7 +125,7 @@ func New(id string, spec *specs.Spec, conf *boot.Config, bundleDir, consoleSocke
defer clientSyncFile.Close()
// Create the sandbox process.
- err = s.createSandboxProcess(spec, conf, bundleDir, consoleSocket, userLog, ioFiles, specFile, sandboxSyncFile)
+ err = s.createSandboxProcess(conf, args, sandboxSyncFile)
// sandboxSyncFile has to be closed to be able to detect when the sandbox
// process exits unexpectedly.
sandboxSyncFile.Close()
@@ -291,7 +323,7 @@ func (s *Sandbox) connError(err error) error {
// createSandboxProcess starts the sandbox as a subprocess by running the "boot"
// command, passing in the bundle dir.
-func (s *Sandbox) createSandboxProcess(spec *specs.Spec, conf *boot.Config, bundleDir, consoleSocket, userLog string, ioFiles []*os.File, mountsFile, startSyncFile *os.File) error {
+func (s *Sandbox) createSandboxProcess(conf *boot.Config, args *Args, startSyncFile *os.File) error {
// nextFD is used to get unused FDs that we can pass to the sandbox. It
// starts at 3 because 0, 1, and 2 are taken by stdin/out/err.
nextFD := 3
@@ -327,7 +359,7 @@ func (s *Sandbox) createSandboxProcess(spec *specs.Spec, conf *boot.Config, bund
// Add the "boot" command to the args.
//
// All flags after this must be for the boot command
- cmd.Args = append(cmd.Args, "boot", "--bundle="+bundleDir)
+ cmd.Args = append(cmd.Args, "boot", "--bundle="+args.BundleDir)
// Create a socket for the control server and donate it to the sandbox.
addr := boot.ControlSocketAddr(s.ID)
@@ -342,12 +374,12 @@ func (s *Sandbox) createSandboxProcess(spec *specs.Spec, conf *boot.Config, bund
cmd.Args = append(cmd.Args, "--controller-fd="+strconv.Itoa(nextFD))
nextFD++
- defer mountsFile.Close()
- cmd.ExtraFiles = append(cmd.ExtraFiles, mountsFile)
+ defer args.MountsFile.Close()
+ cmd.ExtraFiles = append(cmd.ExtraFiles, args.MountsFile)
cmd.Args = append(cmd.Args, "--mounts-fd="+strconv.Itoa(nextFD))
nextFD++
- specFile, err := specutils.OpenSpec(bundleDir)
+ specFile, err := specutils.OpenSpec(args.BundleDir)
if err != nil {
return err
}
@@ -361,7 +393,7 @@ func (s *Sandbox) createSandboxProcess(spec *specs.Spec, conf *boot.Config, bund
nextFD++
// If there is a gofer, sends all socket ends to the sandbox.
- for _, f := range ioFiles {
+ for _, f := range args.IOFiles {
defer f.Close()
cmd.ExtraFiles = append(cmd.ExtraFiles, f)
cmd.Args = append(cmd.Args, "--io-fds="+strconv.Itoa(nextFD))
@@ -389,14 +421,14 @@ func (s *Sandbox) createSandboxProcess(spec *specs.Spec, conf *boot.Config, bund
// If the console control socket file is provided, then create a new
// pty master/slave pair and set the TTY on the sandbox process.
- if consoleSocket != "" {
+ if args.ConsoleSocket != "" {
cmd.Args = append(cmd.Args, "--console=true")
// console.NewWithSocket will send the master on the given
// socket, and return the slave.
- tty, err := console.NewWithSocket(consoleSocket)
+ tty, err := console.NewWithSocket(args.ConsoleSocket)
if err != nil {
- return fmt.Errorf("setting up console with socket %q: %v", consoleSocket, err)
+ return fmt.Errorf("setting up console with socket %q: %v", args.ConsoleSocket, err)
}
defer tty.Close()
@@ -469,7 +501,7 @@ func (s *Sandbox) createSandboxProcess(spec *specs.Spec, conf *boot.Config, bund
// Joins the network namespace if network is enabled. the sandbox talks
// directly to the host network, which may have been configured in the
// namespace.
- if ns, ok := specutils.GetNS(specs.NetworkNamespace, spec); ok && conf.Network != boot.NetworkNone {
+ if ns, ok := specutils.GetNS(specs.NetworkNamespace, args.Spec); ok && conf.Network != boot.NetworkNone {
log.Infof("Sandbox will be started in the container's network namespace: %+v", ns)
nss = append(nss, ns)
} else if conf.Network == boot.NetworkHost {
@@ -483,10 +515,10 @@ func (s *Sandbox) createSandboxProcess(spec *specs.Spec, conf *boot.Config, bund
// inside the user namespace specified in the spec or the current namespace
// if none is configured.
if conf.Network == boot.NetworkHost {
- if userns, ok := specutils.GetNS(specs.UserNamespace, spec); ok {
+ if userns, ok := specutils.GetNS(specs.UserNamespace, args.Spec); ok {
log.Infof("Sandbox will be started in container's user namespace: %+v", userns)
nss = append(nss, userns)
- specutils.SetUIDGIDMappings(cmd, spec)
+ specutils.SetUIDGIDMappings(cmd, args.Spec)
} else {
log.Infof("Sandbox will be started in the current user namespace")
}
@@ -598,8 +630,8 @@ func (s *Sandbox) createSandboxProcess(spec *specs.Spec, conf *boot.Config, bund
}
}
- if userLog != "" {
- f, err := os.OpenFile(userLog, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0664)
+ if args.UserLog != "" {
+ f, err := os.OpenFile(args.UserLog, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0664)
if err != nil {
return fmt.Errorf("opening compat log file: %v", err)
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 01:36:05 +0000