Feature 57 (config and provisioning): release mesh-host, the reviewed release branch on top of main

internal/meshcli/peer.go

@@ -0,0 +1,19 @@
+package meshcli
+
+import "net"
+
+// The kernel's word on who is at the other end of a socket, shared with the node-engine's other local socket, the
+// write of a filled file (internal/filling, novox/hq ADR 0349 §4): one reading of it, so the two never judge a peer
+// differently.
+
+// PeerCredentials is the user id and process id of the process at the other end, as the kernel recorded them when
+// it connected (SO_PEERCRED). Nothing the process says is read.
+func PeerCredentials(conn *net.UnixConn) (uint32, int32, error) { return peerCredentials(conn) }
+
+// SameNamespaces refuses a process whose mount or user namespace is not the engine's: a user id is this machine's
+// account only in this machine's namespaces.
+func SameNamespaces(pid int32) error { return namespacesOf(pid) }
+
+// NotOwnDirectory says what is wrong with a socket's directory, or nothing: it must be a directory, not a link,
+// owned by the account the engine runs as.
+func NotOwnDirectory(dir string) string { return notOwnDirectory(dir) }