3rd-party/linux-kernel-module-cheat
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kernel modules: add a quick scull port from LDD3

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* fix fops.c on both kernels:
  * 5.9: the out of space error code was 1 not 8
  * 6.6: for whatever reason we can't read the user buffer as before on the
         diagnostic print, it leads to segfault and oops
* create memfile.c which is like fops.c but of unlimited size
This commit is contained in:
Ciro Santilli
2025-04-28 15:23:44 +01:00
parent 3d84eccc43
commit e4847e4b40
16 changed files with 2133 additions and 50 deletions
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2
rootfs_overlay/lkmc/character_device.sh
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@@ -1,7 +1,7 @@
#!/bin/sh
set -e
insmod character_device.ko
/mknoddev.sh lkmc_character_device
./mknoddev.sh lkmc_character_device
[ "$(cat /dev/lkmc_character_device)" = 'abcd' ]
rm /dev/lkmc_character_device
rmmod character_device