Class: Yast::BootArchClass

Inherits:
Module
  • Object
show all
Includes:
Logger
Defined in:
src/modules/BootArch.rb

Constant Summary collapse

S390_WHITELIST =

list of regexp to match kernel params that should be added from installation to running kernel on s390 (bsc#1086665)

[
  /net\.ifnames=\S*/,
  /fips=\S*/,
  /mitigations=\S*/,
  /rd\.zdev=\S*/,
  /zfcp\.allow_lun_scan=\S*/
].freeze

Instance Method Summary collapse

Instance Method Details

#DefaultKernelParams(resume) ⇒ String

Note:

for possible arguments for kernel see man kernel-command-line

Get parameters for the default kernel

Parameters:

  • resume (String) —

    string device to resume from (or empty not to set it)

Returns:

  • (String) —

    parameters for default kernel



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# File 'src/modules/BootArch.rb', line 52

def DefaultKernelParams(resume)
  features = ProductFeatures.GetStringFeature(
    "globals",
    "additional_kernel_parameters"
  )
  kernel_cmdline = Kernel.GetCmdLine.dup

  if Arch.i386 || Arch.x86_64 || Arch.aarch64 || Arch.arm || Arch.ppc || Arch.riscv64
    ret = kernel_cmdline
    ret << " resume=#{resume}" unless resume.empty?
    ret << " #{features}" unless features.empty?
    ret << propose_cpu_mitigations
    ret << " quiet"
    ret
  elsif Arch.s390
    termparm = if ENV.fetch("TERM", nil) == "linux"
      "TERM=linux console=ttyS0 console=ttyS1"
    else
      "hvc_iucv=8 TERM=dumb"
    end
    parameters = +"#{features} #{termparm}"
    # pick selected params from installation command line
    S390_WHITELIST.each do |pattern|
      parameters << " #{Regexp.last_match(0)}" if kernel_cmdline =~ pattern
    end

    parameters << propose_cpu_mitigations
    parameters << " resume=#{resume}" unless resume.empty?
    parameters
  else
    log.warn "Default kernel parameters not defined"
    kernel_cmdline + propose_cpu_mitigations
  end
end

#main ⇒ Object 



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# File 'src/modules/BootArch.rb', line 28

def main
  textdomain "bootloader"

  Yast.import "Arch"
  Yast.import "Kernel"
  Yast.import "Linuxrc"
  Yast.import "ProductFeatures"
  Yast.import "Stage"
end

#propose_cpu_mitigations ⇒ Object 



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# File 'src/modules/BootArch.rb', line 87

def propose_cpu_mitigations
  linuxrc_value = Yast::Linuxrc.value_for("mitigations")
  log.info "linuxrc mitigations #{linuxrc_value.inspect}"
  return "" unless linuxrc_value.nil? # linuxrc already has mitigations

  product_value = ProductFeatures.GetStringFeature("globals", "cpu_mitigations")
  log.info "cpu mitigations in product: #{product_value.inspect}"

  mitigations = if product_value.empty?
    ::Bootloader::CpuMitigations::DEFAULT
  else
    ::Bootloader::CpuMitigations.from_string(product_value)
  end
  # no value for manual mitigations
  mitigations.kernel_value ? " mitigations=#{mitigations.kernel_value}" : ""
end