1、查看當前系統內核代碼版本
caojiaju@caojiaju-iMac:~$ sudo apt-cache search linux-source
[sudo] password for caojiaju:
linux-source - Linux kernel source with Ubuntu patches
linux-source-4.15.0 - Linux kernel source for version 4.15.0 with Ubuntu patches
2、下載源代碼
caojiaju@caojiaju-iMac:~$ sudo apt-get install linux-source-4.15.0
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following package was automatically installed and is no longer required:
libssl-doc
Use 'sudo apt autoremove' to remove it.
Suggested packages:
libqt3-dev
The following NEW packages will be installed:
linux-source-4.15.0
0 upgraded, 1 newly installed, 0 to remove and 8 not upgraded.
Need to get 129 MB of archives.
After this operation, 146 MB of additional disk space will be used.
Get:1 http://cn.archive.ubuntu.com/ubuntu bionic-updates/main amd64 linux-source-4.15.0 all 4.15.0-42.45 [129 MB]
Fetched 129 MB in 2min 49s (763 kB/s)
Selecting previously unselected package linux-source-4.15.0.
(Reading database ... 259947 files and directories currently installed.)
Preparing to unpack .../linux-source-4.15.0_4.15.0-42.45_all.deb ...
Unpacking linux-source-4.15.0 (4.15.0-42.45) ...
Setting up linux-source-4.15.0 (4.15.0-42.45) ...
3、查看下載的源代碼文件
caojiaju@caojiaju-iMac:/usr/src$ ls
linux-headers-4.15.0-39 linux-headers-4.15.0-42 linux-source-4.15.0 vboxhost-6.0.0
linux-headers-4.15.0-39-generic linux-headers-4.15.0-42-generic linux-source-4.15.0.tar.bz2
4、創建源碼目錄
caojiaju@caojiaju-iMac:/usr/src$ sudo mkdir /home/kernel/KernelSource -p
5、解壓源碼包
caojiaju@caojiaju-iMac:/usr/src$ sudo tar jxvf linux-source-4.15.0.tar.bz2 -C /home/kernel/KernelSource/
6、配置內核
caojiaju@caojiaju-iMac:/usr/src$ cd /home/kernel/KernelSource/
caojiaju@caojiaju-iMac:/home/kernel/KernelSource$ cd linux-source-4.15.0/
caojiaju@caojiaju-iMac:/home/kernel/KernelSource/linux-source-4.15.0$ ls
arch COPYING Documentation firmware init Kconfig MAINTAINERS net scripts sound ubuntu zfs
block CREDITS drivers fs ipc kernel Makefile README security spl usr
certs crypto dropped.txt include Kbuild lib mm samples snapcraft.yaml tools virt
caojiaju@caojiaju-iMac:/home/kernel/KernelSource/linux-source-4.15.0$ sudo make oldconfig
HOSTCC scripts/basic/fixdep
HOSTCC scripts/kconfig/conf.o
SHIPPED scripts/kconfig/zconf.tab.c
SHIPPED scripts/kconfig/zconf.lex.c
HOSTCC scripts/kconfig/zconf.tab.o
HOSTLD scripts/kconfig/conf
scripts/kconfig/conf --oldconfig Kconfig
security/Kconfig:393:warning: defaults for choice values not supported
security/Kconfig:397:warning: defaults for choice values not supported
security/Kconfig:401:warning: defaults for choice values not supported
security/Kconfig:405:warning: defaults for choice values not supported
security/Kconfig:409:warning: defaults for choice values not supported
#
# using defaults found in /boot/config-4.15.0-42-generic
#
#
# configuration written to .config
#
7、編譯內核
caojiaju@caojiaju-iMac:/home/kernel/KernelSource/linux-source-4.15.0$ sudo make
scripts/kconfig/conf --silentoldconfig Kconfig
security/Kconfig:393:warning: defaults for choice values not supported
security/Kconfig:397:warning: defaults for choice values not supported
security/Kconfig:401:warning: defaults for choice values not supported
security/Kconfig:405:warning: defaults for choice values not supported
security/Kconfig:409:warning: defaults for choice values not supported
SYSTBL arch/x86/include/generated/asm/syscalls_32.h
SYSHDR arch/x86/include/generated/asm/unistd_32_ia32.h
SYSHDR arch/x86/include/generated/asm/unistd_64_x32.h
SYSTBL arch/x86/include/generated/asm/syscalls_64.h
HYPERCALLS arch/x86/include/generated/asm/xen-hypercalls.h
SYSHDR arch/x86/include/generated/uapi/asm/unistd_32.h
SYSHDR arch/x86/include/generated/uapi/asm/unistd_64.h
SYSHDR arch/x86/include/generated/uapi/asm/unistd_x32.h
HOSTCC scripts/basic/bin2c
HOSTCC arch/x86/tools/relocs_32.o
HOSTCC arch/x86/tools/relocs_64.o
HOSTCC arch/x86/tools/relocs_common.o
HOSTLD arch/x86/tools/relocs
CHK include/config/kernel.release
UPD include/config/kernel.release
WRAP arch/x86/include/generated/uapi/asm/bpf_perf_event.h
WRAP arch/x86/include/generated/asm/clkdev.h
WRAP arch/x86/include/generated/asm/dma-contiguous.h
WRAP arch/x86/include/generated/asm/early_ioremap.h
WRAP arch/x86/include/generated/asm/mcs_spinlock.h
WRAP arch/x86/include/generated/asm/mm-arch-hooks.h
CHK include/generated/uapi/linux/version.h
UPD include/generated/uapi/linux/version.h
CHK include/generated/utsrelease.h
UPD include/generated/utsrelease.h
CC arch/x86/purgatory/purgatory.o
AS arch/x86/purgatory/stack.o
AS arch/x86/purgatory/setup-x86_64.o
CC arch/x86/purgatory/sha256.o
AS arch/x86/purgatory/entry64.o
CC arch/x86/purgatory/string.o
LD arch/x86/purgatory/purgatory.ro
BIN2C arch/x86/purgatory/kexec-purgatory.c
CHK include/generated/timeconst.h
UPD include/generated/timeconst.h
CC kernel/bounds.s
CHK include/generated/bounds.h
UPD include/generated/bounds.h
GEN scripts/gdb/linux/constants.py
CC arch/x86/kernel/asm-offsets.s
CHK include/generated/asm-offsets.h
UPD include/generated/asm-offsets.h
CALL scripts/checksyscalls.sh
DESCEND objtool
HOSTCC /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/fixdep.o
HOSTLD /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/fixdep-in.o
LINK /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/fixdep
CC /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/exec-cmd.o
CC /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/help.o
CC /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/pager.o
CC /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/parse-options.o
CC /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/run-command.o
CC /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/sigchain.o
CC /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/subcmd-config.o
LD /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/libsubcmd-in.o
AR /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/libsubcmd.a
GEN /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/arch/x86/lib/inat-tables.c
CC /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/arch/x86/decode.o
LD /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/arch/x86/objtool-in.o
CC /home/kernel/KernelSource/linux-source-4.15.0/tools/objtool/builtin-check.o
... ....
8、編譯模塊
caojiaju@caojiaju-iMac:/home/kernel/KernelSource/linux-source-4.15.0$ sudo make modules
[sudo] password for caojiaju:
CHK include/config/kernel.release
CHK include/generated/uapi/linux/version.h
CHK include/generated/utsrelease.h
CHK include/generated/bounds.h
CHK include/generated/timeconst.h
CHK include/generated/asm-offsets.h
CALL scripts/checksyscalls.sh
DESCEND objtool
CHK scripts/mod/devicetable-offsets.h
Building modules, stage 2.
MODPOST 5150 modules
9、安裝模塊
caojiaju@caojiaju-iMac:/home/kernel/KernelSource/linux-source-4.15.0$ sudo make modules_install
INSTALL arch/x86/crypto/aes-x86_64.ko
INSTALL arch/x86/crypto/aesni-intel.ko
INSTALL arch/x86/crypto/blowfish-x86_64.ko
INSTALL arch/x86/crypto/camellia-aesni-avx-x86_64.ko
INSTALL arch/x86/crypto/camellia-aesni-avx2.ko
INSTALL arch/x86/crypto/camellia-x86_64.ko
INSTALL arch/x86/crypto/cast5-avx-x86_64.ko
INSTALL arch/x86/crypto/cast6-avx-x86_64.ko
INSTALL arch/x86/crypto/chacha20-x86_64.ko
INSTALL arch/x86/crypto/crc32-pclmul.ko
INSTALL arch/x86/crypto/crct10dif-pclmul.ko
INSTALL arch/x86/crypto/des3_ede-x86_64.ko
INSTALL arch/x86/crypto/ghash-clmulni-intel.ko
INSTALL arch/x86/crypto/glue_helper.ko
INSTALL arch/x86/crypto/poly1305-x86_64.ko
INSTALL arch/x86/crypto/salsa20-x86_64.ko
INSTALL arch/x86/crypto/serpent-avx-x86_64.ko
INSTALL arch/x86/crypto/serpent-avx2.ko
INSTALL arch/x86/crypto/serpent-sse2-x86_64.ko
INSTALL arch/x86/crypto/sha1-mb/sha1-mb.ko
INSTALL arch/x86/crypto/sha1-ssse3.ko
INSTALL arch/x86/crypto/sha256-mb/sha256-mb.ko
INSTALL arch/x86/crypto/sha256-ssse3.ko
INSTALL arch/x86/crypto/sha512-mb/sha512-mb.ko
INSTALL arch/x86/crypto/sha512-ssse3.ko
INSTALL arch/x86/crypto/twofish-avx-x86_64.ko
INSTALL arch/x86/crypto/twofish-x86_64-3way.ko
INSTALL arch/x86/crypto/twofish-x86_64.ko
INSTALL arch/x86/events/intel/intel-cstate.ko
INSTALL arch/x86/events/intel/intel-rapl-perf.ko
INSTALL arch/x86/kernel/cpu/mcheck/mce-inject.ko
INSTALL arch/x86/kernel/cpuid.ko
INSTALL arch/x86/kernel/msr.ko
INSTALL arch/x86/kvm/kvm-amd.ko
INSTALL arch/x86/kvm/kvm-intel.ko
INSTALL arch/x86/kvm/kvm.ko
INSTALL arch/x86/oprofile/oprofile.ko
INSTALL arch/x86/platform/atom/punit_atom_debug.ko
INSTALL block/bfq.ko
INSTALL block/kyber-iosched.ko
... ....
10、第一個驅動程序
hello.c代碼
#include <linux/init.h>
#include <linux/module.h>
MODULE_LICENSE("Dual BSD/GPL");
static int hello_init(void)
{
printk(KERN_ALERT "Hello, caojiaju \n");
return 0;
}
static void hello_exit(void)
{
printk(KERN_ALERT "Goodbye, caojiaju \n");
}
module_init(hello_init);
module_exit(hello_exit);
Makefile文件。//注意空格與Tab
obj-m :=hello.o
hellomodule-objs :=module #可以把hello這個改成你的命名
KERNELDIR := /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)
default:
$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
保存
編譯：sudo make
裝載驅動：sudo insmod ./hello.ko
查看當前安裝的驅動模塊 ： lsmod
查看驅動加載輸出> cat /var/log/syslog 或者使用 >dmesg | tail 此條命令更簡潔
卸載命令 > sudo rmmod ./hello.ko
caojiaju@caojiaju-iMac:/home/kernel$ sudo make
make -C /lib/modules/4.15.0-42-generic/build M=/home/kernel modules
make[1]: Entering directory '/usr/src/linux-headers-4.15.0-42-generic'
CC [M] /home/kernel/hello.o
Building modules, stage 2.
MODPOST 1 modules
CC /home/kernel/hello.mod.o
LD [M] /home/kernel/hello.ko
make[1]: Leaving directory '/usr/src/linux-headers-4.15.0-42-generic'
caojiaju@caojiaju-iMac:/home/kernel$
caojiaju@caojiaju-iMac:/home/kernel$
caojiaju@caojiaju-iMac:/home/kernel$ ls
hello.c hello.ko hello.mod.c hello.mod.o hello.o KernelSource Makefile modules.order Module.symvers
caojiaju@caojiaju-iMac:/home/kernel$ sudo insmod ./hello.ko
caojiaju@caojiaju-iMac:/home/kernel$ lsmod
Module Size Used by
hello 16384 0
pci_stub 16384 1
vboxpci 24576 0
vboxnetadp 28672 0
... ...
系統日誌：
Dec 20 06:55:09 caojiaju-iMac nm-dispatcher: req:1 'dhcp4-change' [enp3s0f0]: start running ordered scripts...
Dec 20 06:55:09 caojiaju-iMac NetworkManager[787]: <info> [1545260109.3422] dhcp4 (enp3s0f0): state changed bound -> bound
Dec 20 06:55:09 caojiaju-iMac systemd[1]: Starting Network Manager Script Dispatcher Service...
Dec 20 06:55:09 caojiaju-iMac systemd[1]: Started Network Manager Script Dispatcher Service.
Dec 20 06:55:09 caojiaju-iMac dhclient[1029]: bound to 192.168.1.102 -- renewal in 3212 seconds.
Dec 20 06:56:47 caojiaju-iMac kernel: [37939.266114] Hello, caojiaju
友情提示： 千萬別使用來歷不明的驅動或linux內核，原因你懂的，不是所有人都像我這麼厚道。