Don't use invalid exit values in zero length key test

Shell exit values must fall into the range of [0-255], so let's honour
this. In practice, the "exit -1" from the old code set an exit value of
255 on most systems, so let's pick that.

Fixes part of bug #14478, patch idea suggested by an anonymous
contributor. Thanks!

1 files changed, 12 insertions, 12 deletions

diff --git a/src/test/zero_length_keys.sh b/src/test/zero_length_keys.sh
index 3a99ca1f1d..6c82c3d3d3 100755
--- a/src/test/zero_length_keys.sh
+++ b/src/test/zero_length_keys.sh
@@ -13,10 +13,10 @@
 #    Check tor does not overwrite existing keys (existing behaviour)
 #
 # Exit Statuses:
-#  -2: test failed - tor did not generate the key files on first run
-#  -1: a command failed - the test could not be completed
 #   0: test succeeded - tor regenerated/kept the files
 #   1: test failed - tor did not regenerate/keep the files
+# 254: test failed - tor did not generate the key files on first run
+# 255: a command failed - the test could not be completed
 #
 
 if [ $# -lt 1 ]; then
@@ -32,7 +32,7 @@ TOR="./src/or/tor --hush --DisableNetwork 1 --ShutdownWaitLength 0 --ORPort 1234
 
 if [ -s "$DATA_DIR"/keys/secret_id_key -a -s "$DATA_DIR"/keys/secret_onion_key -a -s "$DATA_DIR"/keys/secret_onion_key_ntor ]; then
   echo "Failure: Previous tor keys present in tor data directory"
-  exit -1
+  exit 255
 else
   echo "Generating initial tor keys"
   $TOR --DataDirectory "$DATA_DIR" --PidFile "$DATA_DIR"/pid &
@@ -47,11 +47,11 @@ else
     true #echo "tor generated the initial key files"
   else
     echo "Failure: tor failed to generate the initial key files"
-    exit -2
+    exit 254
   fi
 fi
 
-#ls -lh  "$DATA_DIR"/keys/ || exit -1
+#ls -lh  "$DATA_DIR"/keys/ || exit 255
 
 # backup and keep/delete/create zero-length files for the keys
 
@@ -62,17 +62,17 @@ cp -r "$DATA_DIR"/keys "$DATA_DIR"/keys.old
 # delete keys for -d or -z
 if [ "$1" != "-e" ]; then
   FILE_DESC="regenerates deleted"
-  rm "$DATA_DIR"/keys/secret_id_key || exit -1
-  rm "$DATA_DIR"/keys/secret_onion_key || exit -1
-  rm "$DATA_DIR"/keys/secret_onion_key_ntor || exit -1
+  rm "$DATA_DIR"/keys/secret_id_key || exit 255
+  rm "$DATA_DIR"/keys/secret_onion_key || exit 255
+  rm "$DATA_DIR"/keys/secret_onion_key_ntor || exit 255
 fi
 
 # create empty files for -z
 if [ "$1" = "-z" ]; then
   FILE_DESC="regenerates zero-length"
-  touch "$DATA_DIR"/keys/secret_id_key || exit -1
-  touch "$DATA_DIR"/keys/secret_onion_key || exit -1
-  touch "$DATA_DIR"/keys/secret_onion_key_ntor || exit -1
+  touch "$DATA_DIR"/keys/secret_id_key || exit 255
+  touch "$DATA_DIR"/keys/secret_onion_key || exit 255
+  touch "$DATA_DIR"/keys/secret_onion_key_ntor || exit 255
 fi
 
 echo "Running tor again to check if it $FILE_DESC keys"
@@ -83,7 +83,7 @@ sleep 5
 kill $TOR_PID
 wait $TOR_PID
 
-#ls -lh "$DATA_DIR"/keys/ || exit -1
+#ls -lh "$DATA_DIR"/keys/ || exit 255
 
 # tor must always have non-zero-length key files
 if [ -s "$DATA_DIR"/keys/secret_id_key -a -s "$DATA_DIR"/keys/secret_onion_key -a -s "$DATA_DIR"/keys/secret_onion_key_ntor ]; then