CentOS上, 我如何制作自定义的内核rpm包?

Question

可以自己编译内核，然后打包么？

Answer 1

• 确认当前内核版本号, 下载对应的SRPM包

  #确认当前版本号
  uname -r
  
  # 到valut.centos.org找到SRPM并下载
  # 注意事项
  # (1) 确认是否用了plus版本的内核, 是的话SRPM在/centosplus/Source/SPackages/
  # (2) 非plus版在以下两个目录: /updates/Source/SPackages, /os/Source/SPackages
  wget http://vault.centos.org/6.4/updates/Source/SPackages/kernel-2.6.32-358.14.1.el6.src.rpm

• 安装SRPM以及相关RPM工具

  # 安装SRPM
  rpm -ivh kernel-2.6.32-358.14.1.el6.src.rpm
  
  # 安装相关RPM工具
  yum install rpm-build redhat-rpm-config patchutils xmlto asciidoc elfutils-libelf-devel zlib-devel binutils-devel newt-devel python-devel perl-ExtUtils-Embed hmaccalc rng-tools kernel-firmware

  # 启动rngd服务, 提供足够的熵值 cat /dev/null >/etc/sysconfig/rngd echo ‘EXTRAOPTIONS=”–rng-device /dev/urandom”’ >/etc/sysconfig/rngd service rngd start

• 生成内核源码, 使用diff生成patch文件

  # 生成内核源码
  cd ~/rpmbuild/SPECS
  rpmbuild -bp kernel.spec
  
  # 修改并生成diff文件
  cd ~/rpmbuild/BUILD
  cp -r kernel-2.6.32-358.14.1.el6 kernel-2.6.32-358.14.1.el6.mine
  diff -urpN kernel-2.6.32-358.14.1.el6 kernel-2.6.32-358.14.1.el6.mine > this-patch-to-fix-that-bug.patch
  
  # 将patch拷贝到SOURCES下
  cp this-patch-to-fix-that-bug.patch ~/rpmbuild/SOURCES
  
  # 清理
  rm -rf ~/rpmbuild/BUILD/kernel-2.6.32-358.14.1.el6*

• 修改SPEC文件, 生成新的内核RPM包

  # 找到以下几行, 再后面添加一行
  # Source84: config-s390x-generic-rhel
  # Source85: config-powerpc64-debug-rhel
  # Source86: config-s390x-debug-rhel
  
  # 新添加行
  Source87: this-patch-to-fix-that-bug.patch
  Patch001: this-patch-to-fix-that-bug.patch
  
  # (可选) 修改changelog, 找到%changelog这行, 再后插入行:
  * Tue Aug 03 2013 Your Name<[e-mail]> [2.6.32-358.14.1.el6.centos]
    - [XXX] path to fix that bug

• 打包生成新的内核RPM包

  # 执行SPEC, 生成过程很长请耐心等待.
  # 执行前, 请仔细review上述步骤, 避免出错重来
  rpmbuila -ba kernel.spec
  
  # 会生成若干个RPM包, 其中最关键的如下, 使用rpm -ivh安装即可
  # kernel-2.6.32-358.14.1.el6.x86_64.rpm
  # kernel-devel-2.6.32-358.14.1.el6.x86_64.rpm
  # kernel-headers-2.6.32-358.14.1.el6.x86_64.rpm