refactor(debug): Remove unused exit code 11

update-firewall-source.py

@@ -29,18 +29,14 @@ import difflib
 # Exit codes
 # 1 : Config file invalid, it has no sections
 # 2 : Config file invalid, sections must define at least CONST.CFG_MANDATORY
-# 3 : Performing a firewalld rules check failed
-# 4 : Performing a firewalld rules encountered a FileNotFoundError
+# 3 : No physical network device found at "/sys/class/net"
+# 4 : Linux find command exited non-zero trying to find a physical network device at "/sys/class/net"
 # 5 : Unable to open firewalld direct rules file for reading
-# 6 : Source and destination are identical when attempting to back up firewalld direct rules file
+# 6 : Kernel sysfs export for network devices at "/sys/class/net" doesn't exist
 # 7 : An option that must have a non-null value is either unset or null
 # 8 : Exception while adding a chain XML element to firewalld direct rules
 # 9 : Unable to open firewalld direct rules file for updating
 # 10: Unable to restart systemd firewalld.service unit
-# 11: Unable to add a <rule/> tag to firewalld
-# 12: Kernel sysfs export for network devices at "/sys/class/net" doesn't exist
-# 13: Linux find command exited non-zero trying to find a physical network device at "/sys/class/net"
-# 14: No physical network device found at "/sys/class/net"
 
 
 class CONST(object):
@@ -343,23 +339,23 @@ def get_phy_nics() -> list:
                       f"{cpe.cmd}\n"
                       f"Verbatim command output was:\n"
                       f"{cpe.output.rstrip()}\n"
-                      f"Exiting 13 ...")
-            sys.exit(13)
+                      f"Exiting 4 ...")
+            sys.exit(4)
         else:
             if not phy_nics_find.stdout:
                 log.error(f"No physical network device found at {linux_sysfs_nics_abs!r}.\n"
                           f"Command was:\n"
                           f"{phy_nics_find.args}\n"
-                          f"Exiting 14 ...")
-                sys.exit(14)
+                          f"Exiting 3 ...")
+                sys.exit(3)
             for line in phy_nics_find.stdout.rstrip().split("\n"):
                 log.debug(f"Found physical network device {(phy_nic := os.path.basename(line))!r}")
                 phy_nics.append(phy_nic)
     else:
         log.error(f"Path {linux_sysfs_nics_abs!r} does not exist. This might not be a Linux-y operating system. "
                   f"Without that location we'll not be able to separate physical network interfaces from virtual ones. "
-                  f"Exiting 12 ...")
-        sys.exit(12)
+                  f"Exiting 6 ...")
+        sys.exit(6)
 
     log.debug(f"List of identified physical network interfaces: {phy_nics}")
     return phy_nics