mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
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146e568db8
Motivation: userland is getting several new subdirectories, it would be too insane to just dump all of that in the guest root filesystem. To alleviate the cd pain, .profile puts user inside /lkmc by default.
18 lines
415 B
Bash
Executable File
18 lines
415 B
Bash
Executable File
#!/bin/sh
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set -ex
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insmod virt_to_phys.ko
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cd /sys/kernel/debug
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cat lkmc_virt_to_phys
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# k = 0x12345678
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# i = 0x12345678
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addr=$(awk '$1 == "virt_to_phys_k" { print $2 }' lkmc_virt_to_phys)
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devmem "$addr"
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devmem "$addr" w 0x9ABCDEF0
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addr=$(awk '$1 == "virt_to_phys_i" { print $2 }' lkmc_virt_to_phys)
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devmem "$addr"
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devmem "$addr" w 0x9ABCDEF0
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cat lkmc_virt_to_phys
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# k = 0x9ABCDEF0
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# i = 0x12345678
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rmmod virt_to_phys
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