fortify/internal/app/share.runtime.go
Ophestra Umiker 65bd7d18db
app/share: fix order to ensure SharePath before any of its subdirectories
shareTmpdirChild happened to request an ephemeral dir within SharePath and was called before shareRuntime which ensures that path. This commit moves SharePath initialisation to shareSystem and moves shareTmpdirChild into ShareSystem. Further cleanup and tests are desperately needed for the app package but for now this fix will have to do.

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>
2024-10-18 01:21:58 +09:00

39 lines
1.2 KiB
Go

package app
import (
"path"
"git.ophivana.moe/cat/fortify/acl"
"git.ophivana.moe/cat/fortify/internal/system"
)
const (
xdgRuntimeDir = "XDG_RUNTIME_DIR"
xdgSessionClass = "XDG_SESSION_CLASS"
xdgSessionType = "XDG_SESSION_TYPE"
)
// shareRuntime queues actions for sharing/ensuring the runtime and share directories
func (seal *appSeal) shareRuntime() {
// mount tmpfs on inner runtime (e.g. `/run/user/%d`)
seal.sys.bwrap.Tmpfs("/run/user", 1*1024*1024)
seal.sys.bwrap.Tmpfs(seal.sys.runtime, 8*1024*1024)
// point to inner runtime path `/run/user/%d`
seal.sys.bwrap.SetEnv[xdgRuntimeDir] = seal.sys.runtime
seal.sys.bwrap.SetEnv[xdgSessionClass] = "user"
seal.sys.bwrap.SetEnv[xdgSessionType] = "tty"
// ensure RunDir (e.g. `/run/user/%d/fortify`)
seal.sys.Ensure(seal.RunDirPath, 0700)
seal.sys.UpdatePermType(system.User, seal.RunDirPath, acl.Execute)
// ensure runtime directory ACL (e.g. `/run/user/%d`)
seal.sys.UpdatePermType(system.User, seal.RuntimePath, acl.Execute)
// ensure process-specific share local to XDG_RUNTIME_DIR (e.g. `/run/user/%d/fortify/%s`)
seal.shareLocal = path.Join(seal.RunDirPath, seal.id.String())
seal.sys.Ephemeral(system.Process, seal.shareLocal, 0700)
seal.sys.UpdatePerm(seal.shareLocal, acl.Execute)
}