From d81ac5328b395deaf1e041381e1bbabb0246c3f3 Mon Sep 17 00:00:00 2001
From: George Danchev <danchev@spnet.net>
Date: Fri, 8 Jul 2011 16:01:17 +0000
Subject: [PATCH] take extra measures we are in sepf-generated data directory
 before removing self-generated cruft

---
 .../trunk/releng/inc/releng_getopts.inc       | 31 +++++++++++++++++--
 1 file changed, 28 insertions(+), 3 deletions(-)

diff --git a/libisoburn/trunk/releng/inc/releng_getopts.inc b/libisoburn/trunk/releng/inc/releng_getopts.inc
index 45c67aaf..cc1ad35e 100644
--- a/libisoburn/trunk/releng/inc/releng_getopts.inc
+++ b/libisoburn/trunk/releng/inc/releng_getopts.inc
@@ -27,9 +27,34 @@ cleanup() {
    # directory before removing whatever self-generated stuff
    if [ -d "${GEN_DATA_DIR}" ]; then
        cd "${START_DIR_DONT_CHANGE}" || exit 2
-       chmod +w -R ${GEN_DATA_DIR}
-       rm -rf ${GEN_DATA_DIR}
-       printf "${SELF}: Removed (self-generated) %s\n" ${GEN_DATA_DIR}
+       
+       # Verify once again we are in the releng_generated_data directory
+       # Check for both returned code of grep and returned matching string
+       READ_CANON_EXISTS=`readlink -e "${GEN_DATA_DIR}"`
+       DIR_NAME_GEN_DATA=`dirname "${READ_CANON_EXISTS}"`
+       set +e
+       RET_NON_EMPTY_STRING=`echo "${DIR_NAME_GEN_DATA}" | grep -P "\w+\/releng_generated_data$"`
+       GREP_RET_GEN_DATA="$?"
+       case "${GREP_RET_GEN_DATA}" in
+            0)
+	      if [ x"${RET_NON_EMPTY_STRING}" != x"" ]; then
+                 # now call the nastiness
+                 chmod +w -R ${GEN_DATA_DIR}
+                 rm -rf ${GEN_DATA_DIR}
+                 printf "${SELF}: Removed (self-generated) %s\n" ${GEN_DATA_DIR}
+	      else
+                 printf "${SELF}: FAIL: Safety check for being in releng_generated_data directory.\n"
+                 printf "${SELF}: FAIL: GREP returned empty string: ${RET_NON_EMPTY_STRING}.\n"
+                 printf "${SELF}: FAIL: Skipped trying to remove ${GEN_DATA_DIR} directory. Exiting.\n"
+	      fi
+            ;;
+	    *)
+              printf "${SELF}: FAIL: Safety check for being in releng_generated_data directory.\n"
+              printf "${SELF}: FAIL: GREP returned code: ${GREP_RET_GEN_DATA}.\n"
+              printf "${SELF}: FAIL: Skipped trying to remove ${GEN_DATA_DIR} directory. Exiting.\n"
+	      exit 30
+	    ;;
+       esac
    else
        printf "${SELF}: ${GEN_DATA_DIR} does not exist. Nothing to clean.\n"
    fi