check for extraction dir existence

libisoburn/trunk/releng/releng_isojigdo

@@ -97,7 +97,7 @@ RES="${RELENG_IMG}.iso ${RELENG_IMG}.new ${RELENG_IMG}.md5 ${RELENG_IMG}.jigdo $
 if ! "${RELENG_XORRISO}" -version | grep libjte >/dev/null 2>&1; then
  printf "\n${SELF}: JTE not supported with this xorriso build. Install jigit and rebuild."
  printf "\n${SELF}: See http://www.einval.com/~steve/software/JTE/\n"
- exit 10
+ exit 9
 fi
 
 # remove cruft from previous runs
@@ -123,9 +123,13 @@ else
 fi
 
 # check for extraction directory existence
-if [ ! -d "${IMG_EXTRACT_DIR}" ]; then
+if [ -d "${IMG_EXTRACT_DIR}" ]; then
+ printf "\n${SELF}: Found ${IMG_EXTRACT_DIR}. Please cleanup.\n"
+ exit 11
+else
  mkdir "${IMG_EXTRACT_DIR}"
 fi
+
 # extract image content
 set +e
 "${RELENG_XORRISO}" -indev "${TMP_DATA_DIR}"/"${REMOTE_IMG}" \
@@ -164,7 +168,7 @@ CMD+="\
 "
 else
  printf "\n${SELF}: FAIL to compose the boot section.\n"
- exit 10
+ exit 12
 fi
 
 # JIGDO section
@@ -182,7 +186,7 @@ if which jigdo-gen-md5-list >/dev/null 2>&1; then
 else
  printf "\n${SELF}: Not found: jigdo-gen-md5-list. Install jigit."
  printf "\n${SELF}: See http://www.einval.com/~steve/software/JTE/\n"
- exit 11
+ exit 13
 fi
 
 CMD+="\
@@ -214,7 +218,7 @@ if which jigit-mkimage >/dev/null 2>&1; then
 else
  printf "\n${SELF}: Not found: jigit-mkimage. Install jigit."
  printf "\n${SELF}: See http://www.einval.com/~steve/software/JTE/\n"
- exit 12
+ exit 14
 fi
 
 # trap the exit code of diff and let the Universe explode
@@ -233,7 +237,7 @@ esac
 if [ ${KEEP} -eq 0 ]; then
  # safety net, just in case -> we want to be in the starting
  # directory before removing whatever self-generated stuff
- cd "${START_DIR_DONT_CHANGE}" || exit 13
+ cd "${START_DIR_DONT_CHANGE}" || exit 15
  rm -rf ${GEN_DATA_DIR}
  printf "${SELF}: removed %s\n" ${GEN_DATA_DIR}
 else