fix: add error logging

Signed-off-by: Felipe Zipitria <felipe.zipitria@owasp.org>

Author: fzipi

apache2/modsecurity.c

@@ -131,6 +131,7 @@ int acquire_global_lock(apr_global_mutex_t *lock, apr_pool_t *mp) {
     // get platform temp dir
     rc = apr_temp_dir_get(&temp_dir, mp);
     if (rc != APR_SUCCESS) {
+        ap_log_perror(APLOG_MARK, APLOG_ERR, 0, NULL, "ModSecurity: Could not get temp dir");
         return -1;
     }
 
@@ -139,13 +140,15 @@ int acquire_global_lock(apr_global_mutex_t *lock, apr_pool_t *mp) {
 
     rc = apr_file_mktemp(&lock_name, path, 0, mp);
     if (rc != APR_SUCCESS) {
+        ap_log_perror(APLOG_MARK, APLOG_ERR, 0, NULL, " ModSecurity: Could not create temporary file for global lock");
         return -1;
     }
     // below func always return APR_SUCCESS
     apr_file_name_get(&filename, lock_name);
 
     rc = apr_global_mutex_create(&lock, filename, APR_LOCK_DEFAULT, mp);
     if (rc != APR_SUCCESS) {
+        ap_log_perror(APLOG_MARK, APLOG_ERR, 0, NULL, " ModSecurity: Could not create global mutex");
         return -1;
     }
     return APR_SUCCESS;