From a71c60bfe4cf71ffca38242814f0d1877489b2bd Mon Sep 17 00:00:00 2001
From: Erik Arvstedt <erik.arvstedt@gmail.com>
Date: Sat, 21 Jan 2023 13:14:28 +0100
Subject: [PATCH] fulcrum: allow access to `/proc/meminfo`

This still hides the proc subdirectories for other processes.

Without this setting, fulcrum fails when the config value of
`fast-sync` is greater than 2^31 bytes.
---
 modules/fulcrum.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/modules/fulcrum.nix b/modules/fulcrum.nix
index 0cbb87d..592757a 100644
--- a/modules/fulcrum.nix
+++ b/modules/fulcrum.nix
@@ -126,6 +126,7 @@ in {
         Restart = "on-failure";
         RestartSec = "10s";
         ReadWritePaths = cfg.dataDir;
+        ProcSubset = "all"; # Fulcrum requires read access to /proc/meminfo
       } // nbLib.allowedIPAddresses cfg.tor.enforce;
     };