Support expanding bootoptions variables

diff --git a/grml2usb b/grml2usb
index ccdb4db..a13e6ea 100755 (executable)
--- a/grml2usb
+++ b/grml2usb
@@ -1538,6 +1538,20 @@ def handle_grub2_config(grml_flavour, grub_target, bootopt):
     modify_grub_config(grub2_cfg)
 
 
+def get_bootoptions(grml_flavour):
+    """Returns bootoptions for specific flavour
+
+    @grml_flavour: name of the grml_flavour
+    """
+    # do NOT write "None" in kernel cmdline
+    if options.bootoptions is None:
+        bootopt = ""
+    else:
+        bootopt = options.bootoptions
+    bootopt = bootopt.replace("%flavour", grml_flavour)
+    return bootopt
+
+
 def handle_grub_config(grml_flavour, device, target):
     """Main handler for generating grub (v1 and v2) configuration
 
@@ -1557,11 +1571,8 @@ def handle_grub_config(grml_flavour, device, target):
         else:
             raise CriticalException("error validating partition schema (raw device?)")
 
-    # do NOT write "None" in kernel cmdline
-    if options.bootoptions is None:
-        bootopt = ""
-    else:
-        bootopt = options.bootoptions
+
+    bootopt = get_bootoptions(grml_flavour)
 
     # write menu.lst
     handle_grub1_config(grml_flavour, install_grub1_partition, grub_target, bootopt)
@@ -1624,11 +1635,7 @@ def adjust_syslinux_bootoptions(src, flavour):
     bootid_re = re.compile("bootid=[\w_-]+")
     live_media_path_re = re.compile("live-media-path=[\w_/-]+")
 
-    # do NOT write "None" in kernel cmdline
-    if options.bootoptions is None:
-        bootopt = ""
-    else:
-        bootopt = options.bootoptions
+    bootopt = get_bootoptions(flavour)
 
     regexe = []
     option_re = None

diff --git a/grml2usb.8.txt b/grml2usb.8.txt
index 933c84e..d09ebcf 100644 (file)
--- a/grml2usb.8.txt
+++ b/grml2usb.8.txt
@@ -51,7 +51,8 @@ The following options are supported:
 
   *\--bootoptions=...*::
 
-Use specified bootoptions as default.
+Use specified bootoptions as default. To use flavour name as a argument for a
+boot parameter use %flavour which will be expanded to the flavour name.
 
   *\--bootloader-only*::
 
@@ -650,6 +651,12 @@ default bootoptions.
 
 Install specified ISO on device /dev/sdX1 remove vga=791 and quiet from existing bootoptions.
 
+  # grml2usb --bootoptions="persistent-path=%flavour_name" grml64_2010.04.iso grml_2010.04.iso /dev/sdX1
+
+Install specified Isos on device /dev/sdx and add parameter persisten-path
+to every menu entry. %flavour_name will be expanded to the flavour of the specific
+iso, e.g. grml64 and grml.
+
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