internal/outcome: rename from app

This is less ambiguous, and more accurately describes the purpose of the package.

Signed-off-by: Ophestra <cat@gensokyo.uk>

1 files changed, 125 insertions, 0 deletions

diff --git a/internal/outcome/spruntime.go b/internal/outcome/spruntime.go
new file mode 100644
index 00000000..b458826a
--- /dev/null
+++ b/internal/outcome/spruntime.go
@@ -0,0 +1,125 @@
+package outcome
+
+import (
+	"encoding/gob"
+
+	"hakurei.app/container/check"
+	"hakurei.app/container/comp"
+	"hakurei.app/container/fhs"
+	"hakurei.app/hst"
+	"hakurei.app/system"
+	"hakurei.app/system/acl"
+)
+
+const (
+	/*
+		Path to a user-private user-writable directory that is bound
+		to the user login time on the machine. It is automatically
+		created the first time a user logs in and removed on the
+		user's final logout. If a user logs in twice at the same time,
+		both sessions will see the same $XDG_RUNTIME_DIR and the same
+		contents. If a user logs in once, then logs out again, and
+		logs in again, the directory contents will have been lost in
+		between, but applications should not rely on this behavior and
+		must be able to deal with stale files. To store
+		session-private data in this directory, the user should
+		include the value of $XDG_SESSION_ID in the filename. This
+		directory shall be used for runtime file system objects such
+		as AF_UNIX sockets, FIFOs, PID files and similar. It is
+		guaranteed that this directory is local and offers the
+		greatest possible file system feature set the operating system
+		provides. For further details, see the XDG Base Directory
+		Specification[3].  $XDG_RUNTIME_DIR is not set if the current
+		user is not the original user of the session.
+	*/
+	envXDGRuntimeDir = "XDG_RUNTIME_DIR"
+
+	/*
+		The session class. This may be used instead of class= on the
+		module parameter line, and is usually preferred.
+	*/
+	envXDGSessionClass = "XDG_SESSION_CLASS"
+
+	/*
+		A regular interactive user session. This is the default class
+		for sessions for which a TTY or X display is known at session
+		registration time.
+	*/
+	xdgSessionClassUser = "user"
+
+	/*
+		The session type. This may be used instead of type= on the
+		module parameter line, and is usually preferred.
+
+		One of "unspecified", "tty", "x11", "wayland", "mir", or "web".
+	*/
+	envXDGSessionType = "XDG_SESSION_TYPE"
+)
+
+func init() { gob.Register(new(spRuntimeOp)) }
+
+const (
+	sessionTypeUnspec = iota
+	sessionTypeTTY
+	sessionTypeX11
+	sessionTypeWayland
+)
+
+// spRuntimeOp sets up XDG_RUNTIME_DIR inside the container.
+type spRuntimeOp struct {
+	// SessionType determines the value of envXDGSessionType. Populated during toSystem.
+	SessionType uintptr
+}
+
+func (s *spRuntimeOp) toSystem(state *outcomeStateSys) error {
+	if state.Container.Flags&hst.FShareRuntime != 0 {
+		runtimeDir, runtimeDirInst := s.commonPaths(state.outcomeState)
+		state.sys.Ensure(runtimeDir, 0700)
+		state.sys.UpdatePermType(system.User, runtimeDir, acl.Execute)
+		state.sys.Ensure(runtimeDirInst, 0700)
+		state.sys.UpdatePermType(system.User, runtimeDirInst, acl.Read, acl.Write, acl.Execute)
+	}
+
+	if state.et&hst.EWayland != 0 {
+		s.SessionType = sessionTypeWayland
+	} else if state.et&hst.EX11 != 0 {
+		s.SessionType = sessionTypeX11
+	} else {
+		s.SessionType = sessionTypeTTY
+	}
+
+	return nil
+}
+
+func (s *spRuntimeOp) toContainer(state *outcomeStateParams) error {
+	state.runtimeDir = fhs.AbsRunUser.Append(state.mapuid.String())
+	state.env[envXDGRuntimeDir] = state.runtimeDir.String()
+	state.env[envXDGSessionClass] = xdgSessionClassUser
+
+	switch s.SessionType {
+	case sessionTypeUnspec:
+		state.env[envXDGSessionType] = "unspecified"
+	case sessionTypeTTY:
+		state.env[envXDGSessionType] = "tty"
+	case sessionTypeX11:
+		state.env[envXDGSessionType] = "x11"
+	case sessionTypeWayland:
+		state.env[envXDGSessionType] = "wayland"
+
+	}
+
+	state.params.Tmpfs(fhs.AbsRunUser, 1<<12, 0755)
+	if state.Container.Flags&hst.FShareRuntime != 0 {
+		_, runtimeDirInst := s.commonPaths(state.outcomeState)
+		state.params.Bind(runtimeDirInst, state.runtimeDir, comp.BindWritable)
+	} else {
+		state.params.Mkdir(state.runtimeDir, 0700)
+	}
+	return nil
+}
+
+func (s *spRuntimeOp) commonPaths(state *outcomeState) (runtimeDir, runtimeDirInst *check.Absolute) {
+	runtimeDir = state.sc.SharePath.Append("runtime")
+	runtimeDirInst = runtimeDir.Append(state.identity.String())
+	return
+}