Merge remote-tracking branch 'origin/5.0' into bootmanager-vender

[bootmanager.git] / source / steps / WriteModprobeConfig.py

diff --git a/source/steps/WriteModprobeConfig.py b/source/steps/WriteModprobeConfig.py
new file mode 100644 (file)
index 0000000..378802d
--- /dev/null
+++ b/source/steps/WriteModprobeConfig.py
@@ -0,0 +1,110 @@
+#!/usr/bin/python
+#
+# Copyright (c) 2003 Intel Corporation
+# All rights reserved.
+#
+# Copyright (c) 2004-2006 The Trustees of Princeton University
+# All rights reserved.
+
+import os, string
+
+from Exceptions import *
+import utils
+import systeminfo
+import BootAPI
+import ModelOptions
+import notify_messages
+import modprobe
+
+def Run( vars, log, filename = "/etc/modprobe.conf"):
+    """
+    write out the system file /etc/modprobe.conf with the current
+    set of modules.
+
+    returns a tuple of the number of network driver lines and storage
+    driver lines written as (networkcount,storagecount)
+    """
+
+    # write out the modprobe.conf file for the system. make sure
+    # the order of the ethernet devices are listed in the same order
+    # as the boot cd loaded the modules. this is found in /tmp/loadedmodules
+    # ultimately, the order will only match the boot cd order if
+    # the kernel modules have the same name - which should be true for the later
+    # version boot cds because they use the same kernel version.
+    # older boot cds use a 2.4.19 kernel, and its possible some of the network
+    # module names have changed, in which case the system might not boot
+    # if the network modules are activated in a different order that the
+    # boot cd.
+
+    # make sure we have this class loaded
+    
+    try:
+        SYSIMG_PATH= vars["SYSIMG_PATH"]
+        if SYSIMG_PATH == "":
+            raise ValueError, "SYSIMG_PATH"
+
+    except KeyError, var:
+        raise BootManagerException, "Missing variable in vars: %s\n" % var
+    except ValueError, var:
+        raise BootManagerException, "Variable in vars, shouldn't be: %s\n" % var
+
+    sysmods= systeminfo.get_system_modules(vars, log)
+    if sysmods is None:
+        raise BootManagerException, "Unable to get list of system modules."
+        
+    # parse the existing modprobe.conf file, if one exists
+    mfile = "%s/%s" % (SYSIMG_PATH,filename)
+    m = modprobe.Modprobe()
+    if os.path.exists(mfile):
+        m.input(mfile)
+
+    blacklist = modprobe.Modprobe()
+    blacklistfiles = os.listdir("/etc/modprobe.d")
+    for blf in blacklistfiles:
+        if os.path.exists("/etc/modprobe.d/%s"%blf):
+            blacklist.input("/etc/modprobe.d/%s"%blf)
+        
+    # storage devices
+    m.optionsset("ata_generic","all_generic_ide=1")
+    scsi_count= 0
+    for a_mod in sysmods[systeminfo.MODULE_CLASS_SCSI]:
+        if m.blacklistget(a_mod) <> None or \
+               blacklist.blacklistget(a_mod) <> None:
+            continue
+        m.aliasset("scsi_hostadapter%d"%scsi_count,a_mod)
+        scsi_count= scsi_count + 1
+
+    # network devices
+    eth_count= 0
+    for a_mod in sysmods[systeminfo.MODULE_CLASS_NETWORK]:
+        if m.blacklistget(a_mod) <> None or \
+               blacklist.blacklistget(a_mod) <> None:
+            continue
+        m.aliasset("eth%d"%eth_count,a_mod)
+        eth_count= eth_count + 1
+    m.output(mfile, "BootManager")
+    m.output("%s.bak"%mfile, "BootManager") # write a backup version of this file
+
+    # dump the modprobe.conf file to the log (not to screen)
+    log.write( "Contents of new modprobe.conf file:\n" )
+    modulesconf_file= file("%s/%s" % (SYSIMG_PATH,filename), "r" )
+    contents= modulesconf_file.read()
+    log.write( contents + "\n" )
+    modulesconf_file.close()
+    modulesconf_file= None
+    log.write( "End contents of new modprobe.conf file.\n" )
+
+    # before we do the real kexec, check to see if we had any
+    # network drivers written to modprobe.conf. if not, return -1,
+    # which will cause this node to be switched to a debug state.
+    if eth_count == 0:
+        log.write( "\nIt appears we don't have any network drivers. Aborting.\n" )
+        
+        vars['RUN_LEVEL']= 'failboot'
+        vars['STATE_CHANGE_NOTIFY']= 1
+        vars['STATE_CHANGE_NOTIFY_MESSAGE']= \
+             notify_messages.MSG_NO_DETECTED_NETWORK
+        raise BootManagerException, \
+              notify_messages.MSG_NO_DETECTED_NETWORK
+
+