Class: Yast::KernelClass

Inherits:
Module
  • Object
show all
Defined in:
../../src/modules/Kernel.rb

Instance Method Summary (collapse)

Instance Method Details

- (Object) AddCmdLine(name, arg)

AddCmdLine () add "name=args" to kernel boot parameters add just "name" if args = ""

Parameters:

  • name (String)

    of parameter

  • string

    args of parameter

See Also:

  • #cmdLine


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# File '../../src/modules/Kernel.rb', line 148

def AddCmdLine(name, arg)
  ParseInstallationKernelCmdline() if !@cmdline_parsed
  @cmdLine = Ops.add(Ops.add(@cmdLine, " "), name)
  @cmdLine = Ops.add(Ops.add(@cmdLine, "="), arg) if arg != ""
  Builtins.y2milestone("cmdLine '%1'", HidePasswords(@cmdLine))
  nil
end

- (Object) AddModuleToLoad(name)

Add a kernel module to the list of modules to load after boot add the module name to sysconfig variable

Parameters:

  • string

    module name



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# File '../../src/modules/Kernel.rb', line 553

def AddModuleToLoad(name)
  Builtins.y2milestone("Adding module to be loaded at boot: %1", name)
  @kernel_modules_to_load = Builtins.add(
    @kernel_modules_to_load,
    { "operation" => "add", "name" => name }
  )

  nil
end

- (String) ComputePackage

Compute kernel package

Returns:

  • (String)

    selected kernel



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# File '../../src/modules/Kernel.rb', line 465

def ComputePackage
  packages = GetPackages()
  the_kernel = Ops.get(packages, 0, "")
  Builtins.y2milestone("Selecting '%1' as kernel package", the_kernel)

  # Check for provided kernel packages in installed system
  if Mode.normal || Mode.repair
    while the_kernel != "" && !Pkg.PkgInstalled(the_kernel)
      the_kernel = Ops.get(@fallbacks, the_kernel, "")
      Builtins.y2milestone("Not provided, falling back to '%1'", the_kernel)
    end
  else
    while the_kernel != "" && !Pkg.PkgAvailable(the_kernel)
      the_kernel = Ops.get(@fallbacks, the_kernel, "")
      Builtins.y2milestone(
        "Not available, falling back to '%1'",
        the_kernel
      )
    end
  end

  if the_kernel != ""
    @final_kernel = the_kernel
  else
    Builtins.y2warning(
      "%1 not available, using kernel-default",
      @kernel_packages
    )

    @final_kernel = "kernel-default"
  end
  @final_kernel
end

- (Array) ComputePackages

Compute kernel packages

Returns:

  • (Array)

    of selected kernel packages



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# File '../../src/modules/Kernel.rb', line 520

def ComputePackages
  kernel = ComputePackage()

  ret = ComputePackagesForBase(kernel, true)

  if Ops.greater_than(Builtins.size(@kernel_packages), 1)
    # get the extra packages
    extra_pkgs = Builtins.remove(@kernel_packages, 0)

    # add available extra packages
    Builtins.foreach(extra_pkgs) do |pkg|
      if Pkg.IsAvailable(pkg)
        ret = Builtins.add(ret, pkg)
        Builtins.y2milestone("Added extra kernel package: %1", pkg)
      else
        Builtins.y2warning(
          "Extra kernel package '%1' is not available",
          pkg
        )
      end
    end
  end

  Builtins.y2milestone("Computed kernel packages: %1", ret)

  deep_copy(ret)
end

- (Object) ComputePackagesForBase(base, check_avail)

Compute kernel package for the specified base kernel package

Parameters:

  • base (String)

    string the base kernel package name (eg. kernel-default)

  • check_avail (Boolean)

    boolean if true, additional packages are checked for for being available on the medias before adding to the list

Returns:

  • a list of all kernel packages (including the base package) that are to be installed together with the base package



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# File '../../src/modules/Kernel.rb', line 510

def ComputePackagesForBase(base, check_avail)
  # Note: kernel-*-nongpl packages have been dropped, use base only
  ret = [base]

  Builtins.y2milestone("Packages for base %1: %2", base, ret)
  deep_copy(ret)
end

- (void) ExtractCmdlineParameters(line)

This method returns an undefined value.

Filters out yast2 specific boot parameters and sets Parameters to the important cmdline parts.

Parameters:

  • cmdline

    string



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# File '../../src/modules/Kernel.rb', line 161

def ExtractCmdlineParameters(line)
  # discard \n
  line = Builtins.deletechars(line, "\n")

  # list of parameters to be discarded (yast internals)

  discardlist = []

  cmdlist = []

  parse_index = 0
  in_quotes = false
  after_backslash = false
  current_param = ""
  while Ops.less_than(parse_index, Builtins.size(line))
    current_char = Builtins.substring(line, parse_index, 1)
    in_quotes = !in_quotes if current_char == "\"" && !after_backslash
    if current_char == " " && !in_quotes
      cmdlist = Builtins.add(cmdlist, current_param)
      current_param = ""
    else
      current_param = Ops.add(current_param, current_char)
    end
    if current_char == "\\"
      after_backslash = true
    else
      after_backslash = false
    end
    parse_index = Ops.add(parse_index, 1)
  end
  cmdlist = Builtins.add(cmdlist, current_param)

  #	this is wrong because of eg. >>o="p a r a m"<<, see bugzilla 26147
  #	list cmdlist = splitstring (line, " ");

  # some systems (pseries) can autodetect the serial console
  if Builtins.contains(cmdlist, "AUTOCONSOLE")
    discardlist = Builtins.add(discardlist, "console")
    discardlist = Builtins.add(discardlist, "AUTOCONSOLE")
  end

  # add special key filtering for s390
  # bnc#462276 Extraneous parameters in /etc/zipl.conf from the installer
  if Arch.s390
    discardlist = Builtins.add(discardlist, "User")
    discardlist = Builtins.add(discardlist, "init")
    discardlist = Builtins.add(discardlist, "ramdisk_size")
  end

  # backdoor to re-enable update on UL/SLES
  if Builtins.contains(cmdlist, "suse_update")
    discardlist = Builtins.add(discardlist, "suse_update")
    @suse_update = true
  end

  Builtins.foreach(cmdlist) do |parameter|
    # split "key=value" to ["key", "value"]
    param_value_list = Builtins.splitstring(parameter, "=")
    key = Ops.get(param_value_list, 0, "")
    value = Ops.get(param_value_list, 1, "")
    # now only collect keys not in discardlist
    if Ops.greater_than(Builtins.size(param_value_list), 0)
      if !Builtins.contains(discardlist, key)
        if Ops.get(param_value_list, 0, "") == "vga"
          if Builtins.regexpmatch(value, "^(0x)?[0-9a-fA-F]+$") ||
              Builtins.contains(["normal", "ext", "ask"], value)
            @vgaType = value
          else
            Builtins.y2warning("Incorrect VGA kernel parameter: %1", value)
          end
        else
          AddCmdLine(key, value)
        end
      end
    end
  end

  nil
end

- (String) GetBinary

Het the name of kernel binary under /boot

Returns:

  • (String)

    the name of the kernel binary



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# File '../../src/modules/Kernel.rb', line 451

def GetBinary
  ProbeKernel() if !@kernel_probed
  @binary
end

- (String) GetCmdLine

Get the kernel command line

Returns:

  • (String)

    the command line



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# File '../../src/modules/Kernel.rb', line 282

def GetCmdLine
  ParseInstallationKernelCmdline() if !@cmdline_parsed
  @cmdLine
end

- (Object) GetFinalKernel



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# File '../../src/modules/Kernel.rb', line 499

def GetFinalKernel
  ComputePackage() if @final_kernel == ""
  @final_kernel
end

- (Object) GetInformAboutKernelChange

Get inform_about_kernel_change.



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# File '../../src/modules/Kernel.rb', line 630

def GetInformAboutKernelChange
  @inform_about_kernel_change
end

- (Object) GetPackages

Get the list of kernel packages

Returns:

  • a list of kernel packages



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# File '../../src/modules/Kernel.rb', line 458

def GetPackages
  ProbeKernel() if !@kernel_probed
  deep_copy(@kernel_packages)
end

- (Boolean) GetSuSEUpdate

Check if suse_update kernel command line argument was passed

Returns:

  • (Boolean)

    true if it was



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# File '../../src/modules/Kernel.rb', line 275

def GetSuSEUpdate
  ParseInstallationKernelCmdline() if !@cmdline_parsed
  @suse_update
end

- (String) GetVgaType

Get the vga= kernel parameter

Returns:

  • (String)

    the vga= kernel parameter



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# File '../../src/modules/Kernel.rb', line 259

def GetVgaType
  ParseInstallationKernelCmdline() if !@cmdline_parsed
  @vgaType
end

- (String) HidePasswords(_in)

Hide passwords in command line option string

Parameters:

  • in (String)

    input string

Returns:

  • (String)

    outpit string



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# File '../../src/modules/Kernel.rb', line 113

def HidePasswords(_in)
  ret = ""

  if _in != nil
    parts = Builtins.splitstring(_in, " ")

    first = true
    Builtins.foreach(parts) do |p|
      cmdopt = p
      if Builtins.regexpmatch(p, "^INST_PASSWORD=")
        cmdopt = "INST_PASSWORD=******"
      elsif Builtins.regexpmatch(p, "^FTPPASSWORD=")
        cmdopt = "FTPPASSWORD=********"
      end
      if first
        first = false
      else
        ret = Ops.add(ret, " ")
      end
      ret = Ops.add(ret, cmdopt)
    end
  else
    ret = nil
  end

  ret
end

- (Object) InformAboutKernelChange

Display popup about new kernel that was installed



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# File '../../src/modules/Kernel.rb', line 635

def InformAboutKernelChange
  if GetInformAboutKernelChange()
    # inform the user that he/she has to reboot to activate new kernel
    Popup.Message(_("Reboot your system\nto activate the new kernel.\n"))
  end
  @inform_about_kernel_change
end

- (Object) IsGraphicalDesktop

Simple check any graphical desktop was selected



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# File '../../src/modules/Kernel.rb', line 297

def IsGraphicalDesktop
  # Get patterns set for installation during desktop selection
  # (see DefaultDesktop::packages_proposal_ID_patterns for the first argument)
  pt = PackagesProposal.GetResolvables("DefaultDesktopPatterns", :pattern)
  Builtins.contains(pt, "x11")
end

- (Object) main



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# File '../../src/modules/Kernel.rb', line 41

def main
  Yast.import "Pkg"

  Yast.import "Arch"
  Yast.import "Mode"
  Yast.import "Linuxrc"
  Yast.import "PackagesProposal"
  Yast.import "Popup"
  Yast.import "Stage"

  textdomain "base"

  # kernel packages and binary

  @kernel_probed = false

  # the name of the kernel binary below '/boot'.
  @binary = "vmlinuz"

  # a list kernels to be installed.
  @kernel_packages = []

  # the final kernel to be installed after verification and
  # availability checking
  @final_kernel = ""

  # kernel commandline

  @cmdline_parsed = false

  # string the kernel vga paramter
  @vgaType = ""

  # if "suse_update" given in cmdline
  @suse_update = false

  # string the kernel command line
  # Don't write it directly, @see: AddCmdLine()
  @cmdLine = ""

  # modules loaded on boot

  # List of changes in /etc/sysconfig/kernel:MODULES_LOADED_ON_BOOT
  # Needs to be stored as a list of changes due to the fact that some RPMs
  # change the variable during installation
  # list member is a map with keys "operation" (value "add" or "detete") and
  # "name" (name of the module)
  @kernel_modules_to_load = []


  # kernel was reinstalled

  #  A flag to indicate if a popup informing about the kernel change should be displayed
  @inform_about_kernel_change = false

  # other variables

  # fallback map for kernel
  @fallbacks = {
    "kernel-pae"       => "kernel-default",
    "kernel-desktop"   => "kernel-default",
    # fallback for PPC (#302246)
    "kernel-iseries64" => "kernel-ppc64"
  }
end

- (Object) ParseInstallationKernelCmdline



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# File '../../src/modules/Kernel.rb', line 240

def ParseInstallationKernelCmdline
  @cmdline_parsed = true
  return if !(Stage.initial || Stage.cont)
  tmp = Convert.to_string(SCR.Read(path(".etc.install_inf.Cmdline")))

  Builtins.y2milestone(
    "cmdline from install.inf is: %1",
    HidePasswords(tmp)
  )
  if tmp != nil
    # extract extra boot parameters given in installation
    ExtractCmdlineParameters(tmp)
  end

  nil
end

- (void) ProbeKernel

This method returns an undefined value.

select kernel depending on architecture and system type.



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# File '../../src/modules/Kernel.rb', line 309

def ProbeKernel
  kernel_desktop_exists = (Mode.normal || Mode.repair) &&
    Pkg.PkgInstalled("kernel-desktop") ||
    Pkg.PkgAvailable("kernel-desktop")
  Builtins.y2milestone(
    "Desktop kernel available: %1",
    kernel_desktop_exists
  )

  @kernel_packages = ["kernel-default"]

  # add Xen paravirtualized drivers to a full virtualized host
  xen = Convert.to_boolean(SCR.Read(path(".probe.is_xen")))
  if xen == nil
    Builtins.y2warning("XEN detection failed, assuming XEN is NOT running")
    xen = false
  end

  Builtins.y2milestone("Detected XEN: %1", xen)

  if Arch.is_uml
    Builtins.y2milestone("ProbeKernel: UML")
    @kernel_packages = ["kernel-um"]
  elsif Arch.is_xen
    # kernel-xen contains PAE kernel (since oS11.0)
    @kernel_packages = ["kernel-xen"]
  elsif Arch.i386
    # get flags from WFM /proc/cpuinfo (for pae and tsc tests below)

    cpuinfo_flags = Convert.to_string(
      SCR.Read(path(".proc.cpuinfo.value.\"0\".\"flags\""))
    ) # check only first processor
    cpuflags = []

    # bugzilla #303842
    if cpuflags != nil
      cpuflags = Ops.greater_than(Builtins.size(cpuinfo_flags), 0) ?
        Builtins.splitstring(cpuinfo_flags, " ") :
        []
    else
      Builtins.y2error("Cannot read cpuflags")
      Builtins.y2milestone(
        "Mounted: %1",
        SCR.Execute(path(".target.bash_output"), "mount -l")
      )
    end

    # check for "roughly" >= 4GB memory (see bug #40729)
    memories = Convert.to_list(SCR.Read(path(".probe.memory")))
    memsize = Ops.get_integer(
      memories,
      [0, "resource", "phys_mem", 0, "range"],
      0
    )
    fourGB = 3221225472
    Builtins.y2milestone("Physical memory %1", memsize)

    # for memory > 4GB and PAE support we install kernel-pae,
    # PAE kernel is needed if NX flag exists as well (bnc#467328)
    if (Ops.greater_or_equal(memsize, fourGB) ||
        Builtins.contains(cpuflags, "nx")) &&
        Builtins.contains(cpuflags, "pae")
      Builtins.y2milestone("Kernel switch: PAE detected")
      if kernel_desktop_exists && IsGraphicalDesktop()
        @kernel_packages = ["kernel-desktop"]

        # add PV drivers
        if xen
          Builtins.y2milestone("Adding Xen PV drivers: xen-kmp-desktop")
          @kernel_packages = Builtins.add(
            @kernel_packages,
            "xen-kmp-desktop"
          )
        end
      else
        @kernel_packages = ["kernel-pae"]

        # add PV drivers
        if xen
          Builtins.y2milestone("Adding Xen PV drivers: xen-kmp-pae")
          @kernel_packages = Builtins.add(@kernel_packages, "xen-kmp-pae")
        end
      end
    else
      # add PV drivers
      if xen
        Builtins.y2milestone("Adding Xen PV drivers: xen-kmp-default")
        @kernel_packages = Builtins.add(@kernel_packages, "xen-kmp-default")
      end
    end
  elsif Arch.x86_64
    if kernel_desktop_exists && IsGraphicalDesktop()
      @kernel_packages = ["kernel-desktop"]
      if xen
        Builtins.y2milestone("Adding Xen PV drivers: xen-kmp-desktop")
        @kernel_packages = Builtins.add(@kernel_packages, "xen-kmp-desktop")
      end
    else
      if xen
        Builtins.y2milestone("Adding Xen PV drivers: xen-kmp-default")
        @kernel_packages = Builtins.add(@kernel_packages, "xen-kmp-default")
      end
    end
  elsif Arch.ppc
    @binary = "vmlinux"

    if Arch.board_iseries
      @kernel_packages = ["kernel-iseries64"]
    elsif Arch.ppc32
      @kernel_packages = ["kernel-default"]
    else
      @kernel_packages = ["kernel-ppc64"]
    end
  elsif Arch.ia64
    @kernel_packages = ["kernel-default"]
  elsif Arch.s390
    @kernel_packages = ["kernel-default"]
    @binary = "image"
  end

  @kernel_probed = true
  Builtins.y2milestone("ProbeKernel determined: %1", @kernel_packages)

  nil
end

- (Object) RemoveModuleToLoad(name)

Remove a kernel module from the list of modules to load after boot

Parameters:

  • name (String)

    string the name of the module



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# File '../../src/modules/Kernel.rb', line 565

def RemoveModuleToLoad(name)
  Builtins.y2milestone("Removing module to be loaded at boot: %1", name)
  @kernel_modules_to_load = Builtins.add(
    @kernel_modules_to_load,
    { "operation" => "remove", "name" => name }
  )

  nil
end

- (Boolean) SaveModulesToLoad

SaveModuleToLoad () save the sysconfig variable to the file

Returns:

  • (Boolean)

    true on success



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# File '../../src/modules/Kernel.rb', line 578

def SaveModulesToLoad
  # if nothing changed, just return success
  return true if Builtins.size(@kernel_modules_to_load) == 0

  # first read current status
  modules_to_load_str = Convert.to_string(
    SCR.Read(path(".sysconfig.kernel.MODULES_LOADED_ON_BOOT"))
  )
  modules_to_load_str = "" if modules_to_load_str == nil
  modules_to_load = Builtins.splitstring(modules_to_load_str, " ")
  modules_to_load = Builtins.filter(modules_to_load) { |s| s != "" }
  Builtins.y2milestone(
    "Read modules to be loaded at boot: %1",
    modules_to_load
  )

  # apply operations on the list
  Builtins.foreach(@kernel_modules_to_load) do |op_desc|
    op = Ops.get(op_desc, "operation", "")
    name = Ops.get(op_desc, "name", "")
    if op == "remove"
      modules_to_load = Builtins.filter(modules_to_load) { |m| m != name }
    elsif op == "add"
      if !Builtins.contains(modules_to_load, name)
        modules_to_load = Builtins.add(modules_to_load, name)
      end
    end
  end

  # and sabe the list
  Builtins.y2milestone(
    "Saving modules to be loaded at boot: %1",
    modules_to_load
  )
  modules_to_load_str = Builtins.mergestring(modules_to_load, " ")
  SCR.Write(
    path(".sysconfig.kernel.MODULES_LOADED_ON_BOOT"),
    modules_to_load_str
  )
  SCR.Write(path(".sysconfig.kernel"), nil)
end

- (Object) SetCmdLine(new_cmd_line)

Set the kernel command line FIXME is heer because of bootloader module, should be removed



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# File '../../src/modules/Kernel.rb', line 289

def SetCmdLine(new_cmd_line)
  ParseInstallationKernelCmdline() if !@cmdline_parsed
  @cmdLine = new_cmd_line

  nil
end

- (Object) SetInformAboutKernelChange(b)

Set inform_about_kernel_change.



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# File '../../src/modules/Kernel.rb', line 623

def SetInformAboutKernelChange(b)
  @inform_about_kernel_change = b

  nil
end

- (Object) SetPackages(custom_kernels)

Set a custom kernel.

Parameters:

  • custom_kernels

    a list of kernel packages



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# File '../../src/modules/Kernel.rb', line 437

def SetPackages(custom_kernels)
  custom_kernels = deep_copy(custom_kernels)
  # probe to avoid later probing
  ProbeKernel() if !@kernel_probed
  @kernel_packages = deep_copy(custom_kernels)

  nil
end

- (Object) SetVgaType(new_vga)

Set the vga= kernel argument FIXME is heer because of bootloader module, should be removed



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# File '../../src/modules/Kernel.rb', line 266

def SetVgaType(new_vga)
  ParseInstallationKernelCmdline() if !@cmdline_parsed
  @vgaType = new_vga

  nil
end