From a8127ecf7fef5ba628b0a92c7f17680598d86c5c Mon Sep 17 00:00:00 2001
From: Abhishek Mukherjee <34828+abhishekmukherg@users.noreply.github.com>
Date: Sat, 14 Jan 2023 11:33:13 -0800
Subject: [PATCH] Use sudo for reading ffxiv pid environ

For reasons I can't quite find on the internet, I was unable to read the
environ file from processes created from xlcore (AUR), despite the file being
owned by my user, having 0400 permissions. The only thing I could find
online was [a RedHat KB entry][1], which I can't read as I don't have a
subscription. The fact that article exists makes me think that there's
something in the kernel that prevents this, potentially related to
cgroups, but I don't know enough about how xlcore/wine work to know if
any of that could be related. I can confirm that this seems specific to
the FFXIV process as kicked off by xlcore from AUR on my machine -- I
can enumerate environments of other processes just fine... So I'm really
not sure what's going on

[1]: https://access.redhat.com/solutions/1446823
---
 setup-stage1.sh | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/setup-stage1.sh b/setup-stage1.sh
index b977bc9..71d8d63 100755
--- a/setup-stage1.sh
+++ b/setup-stage1.sh
@@ -118,7 +118,16 @@ declare -a FFXIV_ENVIRON_REQUIRED=(
 IFS=\| eval 'FFXIV_ENVIRON_REQ_RGX="^export (${FFXIV_ENVIRON_REQUIRED[*]})="'
 
 # Extract the currently running Lutris environment as properly quoted, newline-separated values.
-FFXIV_ENVIRON="$(cat /proc/$FFXIV_PID/environ | xargs -0 bash -c 'printf "export %q\n" "$@"' --)"
+get_ffxiv_pid_environ() {
+    if cat "/proc/$FFXIV_PID/environ" 2>/dev/null; then
+        return 0
+    fi
+    echo "Failed to cat /proc/$FFXIV_PID/environ. This can sometimes happen if your operating system only allows this action by root. We will try to rerun this command with sudo. You may be prompted for your password. The commands we will run with sudo are:" >&2
+    echo >&2
+    echo "  sudo cat /proc/$FFXIV_PID/environ" >&2
+    sudo cat /proc/$FFXIV_PID/environ
+}
+FFXIV_ENVIRON="$(get_ffxiv_pid_environ | xargs -0 bash -c 'printf "export %q\n" "$@"' --)"
 
 # Grab only the exact environment variables that we want.
 FFXIV_ENVIRON_FINAL="$(echo "$FFXIV_ENVIRON" | grep -P "$FFXIV_ENVIRON_REQ_RGX")"