From 7741a500c1da6d534c6b0aeac78531212b743236 Mon Sep 17 00:00:00 2001
From: Joshua Bakita <jbakita@cs.unc.edu>
Date: Tue, 13 Sep 2022 02:52:43 -0400
Subject: Fix some privilege bugs with fig10_experiments.sh

---
 fig10_experiments.sh | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)
 mode change 100644 => 100755 fig10_experiments.sh

diff --git a/fig10_experiments.sh b/fig10_experiments.sh
old mode 100644
new mode 100755
index b35caf9..5d48235
--- a/fig10_experiments.sh
+++ b/fig10_experiments.sh
@@ -1,24 +1,29 @@
 #!/bin/bash
-# May ask for sudo to drop caches between CPU paging experiments
-# DO NOT execute this whole script as sudo
+# Needs sudo to drop caches between CPU paging experiments
 if [ $# -eq 0 ]; then
     echo "Usage: $0 <number of sampling iterations>"
     exit
 fi
 
+if [ "$EUID" != 0 ]; then
+    sudo "$0" "$@"
+    exit $?
+fi
+
 iters=$1
 
 echo "Running GPU paging experiments..."
 gpu_times=$(date +"%b%d-%H")-gpu-times.tsv
 echo "# Generated by './fig10_experiments.sh' with $iters iters" > $gpu_times
-for ((i = 1; i <= $iters; i++)); do ./gpu_paging_speed | tr -cd '[[:digit:]]\t\n' | sed "/\t$/d"; done >> $gpu_times
+# GPU paging needs to be run as a non-root user
+for ((i = 1; i <= $iters; i++)); do sudo -u ae ./gpu_paging_speed | tr -cd '[[:digit:]]\t\n' | sed "/\t$/d"; done >> $gpu_times
 
 echo "Done. Running direct I/O experiments..."
 directio_times=$(date +"%b%d-%H")-directio-times.tsv
-sudo ./directio_paging_speed $iters > $directio_times
+./directio_paging_speed $iters > $directio_times
 
 echo "Done. Running demand paging experiments..."
 demand_paging_times=$(date +"%b%d-%H")-demand-paging-times.tsv
-sudo ./demand_paging_speed $iters > $demand_paging_times
+./demand_paging_speed $iters > $demand_paging_times
 
 echo "Done! Results are saved in $gpu_times, $directio_times, and $demand_paging_times"
-- 
cgit v1.2.2