Allow child bashio processes to access the parent LOG_FD variable

Author: PaulSD

lib/log.sh

@@ -8,11 +8,13 @@
 # ==============================================================================
 
 # Unless $LOG_FD is already set to a valid fd
-if ! [[ "${LOG_FD-}" =~ ^[0-9]+$ ]] || ! { : >&"${LOG_FD-2}"; } 2>/dev/null; then
+if ! [[ "${LOG_FD:-}" =~ ^[0-9]+$ ]] || ! { : >&"${LOG_FD:-}"; } 2>/dev/null; then
   # Preserve the original STDOUT on a free fd (stored in $LOG_FD) so that we can
-  # log to it without interfering with the STDOUT of subshells whose output we
-  # want to capture for other purposes.
+  # log to it without interfering with the STDOUT of subshells or child processes
+  # whose output we want to capture for other purposes.
   exec {LOG_FD}>&1
+  # Export LOG_FD for use by child bashio processes.
+  export LOG_FD
 fi
 
 # ------------------------------------------------------------------------------