From 1c15af1ce32aaad7fb4d7a5cb842f421483f72cc Mon Sep 17 00:00:00 2001
From: Richard Soderberg <rsoderberg@gmail.com>
Date: Wed, 2 Sep 2015 21:57:24 -0700
Subject: [PATCH] verify the results of pushd rather than trusting it

---
 cipherscan | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/cipherscan b/cipherscan
index e1dba57..64f6a85 100755
--- a/cipherscan
+++ b/cipherscan
@@ -281,8 +281,12 @@ c_hash() {
         fi
         if [[ ! -e $1/${h}.${num} ]]; then
             # file doesn't exist, create a link
-            pushd "$1" > /dev/null
-            ln -s "$2" "${h}.${num}"
+            if pushd "$1" > /dev/null; then
+                ln -s "$2" "${h}.${num}"
+            else
+                echo "'pushd $1' failed unexpectedly, refusing to proceed" 1>&2
+                exit 1
+            fi
             popd > /dev/null
             break
         fi