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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.
12 lines
198 B
Bash
Executable File
12 lines
198 B
Bash
Executable File
#!/bin/sh
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set -e
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insmod sysfs.ko
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f=/sys/kernel/lkmc_sysfs/foo
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# write
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printf 12345 > "$f"
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# read
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[ "$(cat "$f")" = 1234 ]
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# seek
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[ "$(dd if="$f" bs=1 count=2 skip=1 status=none)" = 23 ]
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rmmod sysfs
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