Add kickstart %pre-install section support

The %pre-install section will run scripts after all the filesystems have
been setup and mounted on /mnt/sysimage, but before any packages have
been installed.

anaconda.spec.in

@@ -21,7 +21,7 @@ Source0: %{name}-%{version}.tar.bz2
 # Also update in AM_GNU_GETTEXT_VERSION in configure.ac
 %define gettextver 0.18.3
 %define intltoolver 0.31.2-3
-%define pykickstartver 2.5
+%define pykickstartver 2.6
 %define yumver 3.4.3-91
 %define dnfver 0.6.4
 %define partedver 1.8.1

pyanaconda/install.py

@@ -33,6 +33,7 @@
 from pyanaconda.i18n import _
 from pyanaconda.threads import threadMgr
 from pyanaconda.ui.lib.entropy import wait_for_entropy
+from pyanaconda.kickstart import runPostScripts, runPreInstallScripts
 import logging
 import blivet
 log = logging.getLogger("anaconda")
@@ -55,8 +56,6 @@ def _writeKS(ksdata):
     iutil.eintr_retry_call(os.chmod, path, 0o600)
 
 def doConfiguration(storage, payload, ksdata, instClass):
-    from pyanaconda.kickstart import runPostScripts
-
     willWriteNetwork = not flags.flags.imageInstall and not flags.flags.dirInstall
     willRunRealmd = ksdata.realm.discovered
 
@@ -150,7 +149,7 @@ def doInstall(storage, payload, ksdata, instClass):
     # Update every 10% of packages installed.  We don't know how many packages
     # we are installing until it's too late (see realmd later on) so this is
     # the best we can do.
-    steps += 10
+    steps += 11
 
     # pre setup phase, post install
     steps += 2
@@ -199,6 +198,10 @@ def doInstall(storage, payload, ksdata, instClass):
     if not write_storage_late and not flags.flags.dirInstall:
         storage.write()
 
+    # Run %pre-install scripts with the filesystem mounted and no packages
+    with progress_report(_("Running pre-installation scripts")):
+        runPreInstallScripts(ksdata.scripts)
+
     # Do packaging.
 
     # Discover information about realms to join,

pyanaconda/kickstart.py

@@ -65,13 +65,13 @@
 from pyanaconda.pwpolicy import F22_PwPolicy, F22_PwPolicyData
 
 from pykickstart.constants import CLEARPART_TYPE_NONE, FIRSTBOOT_SKIP, FIRSTBOOT_RECONFIG, KS_SCRIPT_POST, KS_SCRIPT_PRE, \
-                                  KS_SCRIPT_TRACEBACK, SELINUX_DISABLED, SELINUX_ENFORCING, SELINUX_PERMISSIVE
+                                  KS_SCRIPT_TRACEBACK, KS_SCRIPT_PREINSTALL, SELINUX_DISABLED, SELINUX_ENFORCING, SELINUX_PERMISSIVE
 from pykickstart.base import BaseHandler
 from pykickstart.errors import formatErrorMsg, KickstartError, KickstartValueError
 from pykickstart.parser import KickstartParser
 from pykickstart.parser import Script as KSScript
 from pykickstart.sections import Section
-from pykickstart.sections import NullSection, PackageSection, PostScriptSection, PreScriptSection, TracebackScriptSection
+from pykickstart.sections import NullSection, PackageSection, PostScriptSection, PreScriptSection, PreInstallScriptSection, TracebackScriptSection
 from pykickstart.version import returnClassForVersion
 
 import logging
@@ -2010,6 +2010,7 @@ def handleCommand(self, lineno, args):
 
     def setupSections(self):
         self.registerSection(PreScriptSection(self.handler, dataObj=AnacondaKSScript))
+        self.registerSection(NullSection(self.handler, sectionOpen="%pre-install"))
         self.registerSection(NullSection(self.handler, sectionOpen="%post"))
         self.registerSection(NullSection(self.handler, sectionOpen="%traceback"))
         self.registerSection(NullSection(self.handler, sectionOpen="%packages"))
@@ -2031,6 +2032,7 @@ def handleCommand(self, lineno, args):
 
     def setupSections(self):
         self.registerSection(PreScriptSection(self.handler, dataObj=self.scriptClass))
+        self.registerSection(PreInstallScriptSection(self.handler, dataObj=self.scriptClass))
         self.registerSection(PostScriptSection(self.handler, dataObj=self.scriptClass))
         self.registerSection(TracebackScriptSection(self.handler, dataObj=self.scriptClass))
         self.registerSection(PackageSection(self.handler))
@@ -2121,6 +2123,16 @@ def runPreScripts(scripts):
 
     log.info("All kickstart %%pre script(s) have been run")
 
+def runPreInstallScripts(scripts):
+    preInstallScripts = [s for s in scripts if s.type == KS_SCRIPT_PREINSTALL]
+
+    if len(preInstallScripts) == 0:
+        return
+
+    log.info("Running kickstart %%pre-install script(s)")
+    map(lambda s: s.run("/"), preInstallScripts)
+    log.info("All kickstart %%pre-install script(s) have been run")
+
 def runTracebackScripts(scripts):
     log.info("Running kickstart %%traceback script(s)")
     for script in filter(lambda s: s.type == KS_SCRIPT_TRACEBACK, scripts):