build-install-package: Added checks at some important points

These checks force the script to exit on error.

Signed-off-by: Erik Alexandre Pucci <eap08@c3sl.ufpr.br>
Acked-by: Danilo Kiyoshi Simizu Yorinori <danilok@c3sl.ufpr.br>
Acked-by: Tiago Rodrigo Kepe <trk08@c3sl.ufpr.br>

build-install-package

@@ -48,7 +48,13 @@ printf "Creating tree..."
 rm -Rf "/tmp/${INEP}"
 mkdir -p "/tmp/${INEP}"
 
-cp -r "${AGENT_FILES}/SEED2-run" "/tmp/${INEP}/SEED2"
+# Copy the agent files to the temporary directory where the installation package
+# will be generated
+if ! cp -r "${AGENT_FILES}/SEED2-run" "/tmp/${INEP}/SEED2"; then
+    printf "ERROR: Failed to copy agent files.\n"
+    exit 2
+fi
+
 mkdir -p "/tmp/${INEP}/SEED2/client/conf"
 echo "${INEP}" > "/tmp/${INEP}/SEED2/client/conf/inep"
 FILE="/tmp/${INEP}/SEED2/client/conf/inep"
@@ -74,7 +80,12 @@ FILE="/tmp/${INEP}/SEED2/.backup/client/conf/proxy"
 md5sum "${FILE}" |cut -d' ' -f1 > \
     "/tmp/${INEP}/SEED2/.md5sum/.backup/client/conf/proxy"
 
-cp -r "${AGENT_FILES}/bootstrap-install" "/tmp/${INEP}"
+# Copy the bootstrap-install to the temporary directory
+if ! cp -r "${AGENT_FILES}/${BOOTSTRAP}" "/tmp/${INEP}"; then
+    printf "ERROR: Failed to copy ${BOOTSTRAP} to the %b" \
+           "temporary directory.\n"
+    exit 3
+fi
 
 printf "done.\n"
 
@@ -82,7 +93,10 @@ printf "done.\n"
 printf "Packaging..."
 
 cd "/tmp/${INEP}"
-tar -czf SEED2.tgz SEED2
+if ! tar -czf SEED2.tgz SEED2; then
+    printf "ERROR: Failed to compress the agent package.\n"
+    exit 4
+fi
 
 # Create the tar md5 and compute the bootstrap lines
 MD5_CHECK=$(md5sum SEED2.tgz | awk '{print $1}')