[PATCH 1/3] Add support for externally triggered reconfig mode (#1110439)

[Martin Kolman]

Make it possible to trigger the already present reconfig mode by
by creating the /etc/reconfigSys file, enabling the respektive Initial Setup
service and rebooting.

Resolves: rhbz#1110439
Signed-off-by: Martin Kolman 
---
 initial_setup/__main__.py | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/initial_setup/__main__.py b/initial_setup/__main__.py
index d9e411f..120ae0c 100644
--- a/initial_setup/__main__.py
+++ b/initial_setup/__main__.py
@@ -8,15 +8,19 @@ from pyanaconda.users import Users
 from initial_setup.post_installclass import PostInstallClass
 from initial_setup import initial_setup_log
 from pyanaconda import iutil
+from pykickstart.constants import FIRSTBOOT_RECONFIG

INPUT_KICKSTART_PATH = "/root/anaconda-ks.cfg"
 OUTPUT_KICKSTART_PATH = "/root/initial-setup-ks.cfg"
+RECONFIG_FILE = "/etc/reconfigSys"

# set root to "/", we are now in the installed system
 iutil.setSysroot("/")

signal.signal(signal.SIGINT, signal.SIG_IGN)

+external_reconfig = os.path.exists(RECONFIG_FILE)
+
 initial_setup_log.init()
 log = logging.getLogger("initial-setup")

@@ -27,6 +31,9 @@ else:

log.debug("display mode detected: %s", mode)

+if external_reconfig:
+    log.debug("running in externally triggered reconfig mode")
+
 if mode == "gui":
     # We need this so we can tell GI to look for overrides objects
     # also in anaconda source directories
@@ -94,6 +101,11 @@ except pykickstart.errors.KickstartError as kserr:
     log.exception("kickstart parsing failed: %s" % kserr)
     sys.exit(1)

+if external_reconfig:
+    # set the reconfig flag in kickstart so that
+    # relevant spokes show up
+    data.firstboot.firstboot = FIRSTBOOT_RECONFIG
+
 if mode == "gui":
     try:
         # Try to import IS gui specifics
@@ -175,8 +187,22 @@ for section in sections:
 log.info("executing addons")
 data.addons.execute(None, data, None, u)

+if external_reconfig:
+    # prevent the reconfig flag from being written out,
+    # to prevent the reconfig mode from being enabled
+    # without the /etc/reconfigSys file being present
+    data.firstboot.firstboot = None
+
 # Write the kickstart data to file
 log.info("writing the Initial Setup kickstart file %s", OUTPUT_KICKSTART_PATH)
 with open(OUTPUT_KICKSTART_PATH, "w") as f:
     f.write(str(data))
 log.info("finished writing the Initial Setup kickstart file")
+
+# Remove the reconfig file, if any - otherwise the reconfig mode
+# would start again next time the Initial Setup service is enabled
+if external_reconfig and os.path.exists(RECONFIG_FILE):
+    log.debug("removing the reconfig file")
+    os.remove(RECONFIG_FILE)
+    log.debug("the reconfig file has been removed")
+