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