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internal: Deny the device tree on the hosts that have one #2

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internal: Deny the device tree on the hosts that have one #2

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11 changes: 10 additions & 1 deletion libraries/internal/src/main/kotlin/org/foedusprogramme/alexandrite/internal/floor/Floor.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -189,7 +189,16 @@ private fun isMagic(path: CanonicalPath): Boolean {
private fun standardRoots(home: Path?, environment: Map<String, String>): List<DenyRoot> =
home?.let { CREDENTIAL_STORES.map { (name, kind) -> DenyRoot(home.resolve(name), kind) } }.orEmpty() +
movedStores(environment) +
DenyRoot(Path.of("/dev"), "devices")
DEVICES

/**
* The device tree, on the hosts that have one.
*
* `/dev` is the device tree of a POSIX system and means nothing on a host without one: there it names a path that has
* no root of its own, which no check can canonicalize.
*/
private val DEVICES: List<DenyRoot> =
if (java.io.File.separatorChar == '/') listOf(DenyRoot(Path.of("/dev"), "devices")) else emptyList()

/** The credential stores at the absolute places that the variables of [environment] name. */
private fun movedStores(environment: Map<String, String>): List<DenyRoot> {
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