使已在 Fedora 上停用的内核模块可用

fra*_*ans 6 linux fedora rpm kernel-modules update

编辑:我把克里斯蒂安的回答变成了一个自动完成所有事情的脚本:https : //github.com/frans-fuerst/magic/blob/master/fedora-activate-can.sh

我需要一些在 Linux 源代码中可用但在 Fedora 20 上停用的内核模块,我想知道让它们可用的最简单和最先进的方法是什么。(即 net/CAN 支持导致一些 can_* 模块)

  • 是否有 Fedora-repos/rpms 使停用的模块可用?
  • 还是我必须手动编译这些模块?
  • 在这种情况下 - 是否有某种机制可以在内核更新的情况下自动执行此操作,还是我必须一遍又一遍地编译它们?

我已经遵循了这个HowTo(并且还有更多非常相似的),但是“仅构建模块”部分似乎仅适用于尚未禁用的模块,因为在这种情况下甚至模块源都丢失了。

这是我按照提到的HowTo尝试方法

首先,我尝试遵循Out Of Tree Modules部分,但是在随附的该死的源代码树中,kernel-devel甚至缺少 CAN 支持的源代码。所以我尝试从 src.rpm 构建模块:

$ yumdownloader --source kernel
$ sudo yum-builddep kernel-3.14.8-200.fc20.src.rpm
$ rpm -Uvh kernel-3.14.8-200.fc20.src.rpm
$ cd ~/rpmbuild/SPECS
$ rpmbuild -bp --target=$(uname -m) kernel.special
$ cd ~/rpmbuild/BUILD/<kerneldir>/<linuxdir>
$ <configure the kernel using menuconfig>
$ make prepare
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然后我构建并收到一些警告:

$ make -C /lib/modules/`uname -r`/build M=`pwd`/net/can modules
make: Entering directory `<rpmbuild-BUILD-kernel-linux-dir>'

  WARNING: Symbol version dump <rpmbuild-BUILD-kernel-linux-dir>/Module.symvers
           is missing; modules will have no dependencies and modversions.

  CC [M]  <rpmbuild-BUILD-kernel-linux-dir>/net/can/bcm.o
  CC [M]  <rpmbuild-BUILD-kernel-linux-dir>/net/can/gw.o
  CC [M]  <rpmbuild-BUILD-kernel-linux-dir>/net/can/raw.o
  CC [M]  <rpmbuild-BUILD-kernel-linux-dir>/net/can/af_can.o
  CC [M]  <rpmbuild-BUILD-kernel-linux-dir>/net/can/proc.o
  LD [M]  <rpmbuild-BUILD-kernel-linux-dir>/net/can/can.o
  LD [M]  <rpmbuild-BUILD-kernel-linux-dir>/net/can/can-raw.o
  LD [M]  <rpmbuild-BUILD-kernel-linux-dir>/net/can/can-bcm.o
  LD [M]  <rpmbuild-BUILD-kernel-linux-dir>/net/can/can-gw.o
  Building modules, stage 2.
  MODPOST 4 modules
  CC      <rpmbuild-BUILD-kernel-linux-dir>/net/can/can-bcm.mod.o
  LD [M]  <rpmbuild-BUILD-kernel-linux-dir>/net/can/can-bcm.ko
  CC      <rpmbuild-BUILD-kernel-linux-dir>/net/can/can-gw.mod.o
  LD [M]  <rpmbuild-BUILD-kernel-linux-dir>/net/can/can-gw.ko
  CC      <rpmbuild-BUILD-kernel-linux-dir>/net/can/can-raw.mod.o
  LD [M]  <rpmbuild-BUILD-kernel-linux-dir>/net/can/can-raw.ko
  CC      <rpmbuild-BUILD-kernel-linux-dir>/net/can/can.mod.o
  LD [M]  <rpmbuild-BUILD-kernel-linux-dir>/net/can/can.ko
make: Leaving directory `<rpmbuild-BUILD-kernel-linux-dir>'

$ sudo make -C /lib/modules/`uname -r`/build M=`pwd`/net/can modules_install
make: Entering directory `<rpmbuild-BUILD-kernel-linux-dir>'
  INSTALL <rpmbuild-BUILD-kernel-linux-dir>/net/can/can-bcm.ko
Can't read private key
  INSTALL <rpmbuild-BUILD-kernel-linux-dir>/net/can/can-gw.ko
Can't read private key
  INSTALL <rpmbuild-BUILD-kernel-linux-dir>/net/can/can-raw.ko
Can't read private key
  INSTALL <rpmbuild-BUILD-kernel-linux-dir>/net/can/can.ko
Can't read private key
  DEPMOD  3.14.8
make: Leaving directory `<rpmbuild-BUILD-kernel-linux-dir>'
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我刚跑步时没有收到第一个警告,make modules但这花费了我大约一个小时。

但在安装后,该.ko文件位于错误的目录(/usr/lib/modules/3.14.8而非/usr/lib/modules/3.14.8-200.fc20.x86_64)后depmod -amodprobe can我得到

modprobe: ERROR: could not insert 'can': Exec format error
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我究竟做错了什么?

Cri*_*itu 6

我想我明白了,虽然它可能远非完美。

  1. 通过运行准备源代码

    rpmbuild -bp --target=$(uname -m) kernel.spec
    
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  2. 转到构建目录,例如:

    cd ~/rpmbuild/BUILD/kernel-3.14.fc20/linux-3.14.8-200.fc20.x86_64
    
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  3. 编辑Makefile并设置EXTRAVERSION为:

    EXTRAVERSION = -200.fc20.x86_64
    
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  4. 启用模块。我建议从configs目录下的相应文件开始(我使用了kernel-3.14.8-x86_64.config)。

  5. 为模块准备内核:

    make modules_prepare
    
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  6. 构建模块:

    make M=drivers/net/can
    
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  7. 利润!插入模块:

    insmod can-dev.ko
    
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