mirror of
https://github.com/dynup/kpatch
synced 2024-12-23 21:52:07 +00:00
0c9a54645c
In order to safely re-enable patch modules, add a special .kpatch.checksum section containing an md5sum of a patch module's contents. The contents of this section are exported to sysfs via patch_init and double checked when kpatch load finds that a module of the same name is already loaded.
34 lines
1.0 KiB
Plaintext
34 lines
1.0 KiB
Plaintext
__kpatch_funcs = ADDR(.kpatch.funcs);
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__kpatch_funcs_end = ADDR(.kpatch.funcs) + SIZEOF(.kpatch.funcs);
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__kpatch_dynrelas = ADDR(.kpatch.dynrelas);
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__kpatch_dynrelas_end = ADDR(.kpatch.dynrelas) + SIZEOF(.kpatch.dynrelas);
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__kpatch_checksum = ADDR(.kpatch.checksum);
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SECTIONS
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{
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.kpatch.hooks.load : {
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__kpatch_hooks_load = . ;
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*(.kpatch.hooks.load)
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__kpatch_hooks_load_end = . ;
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/*
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* Pad the end of the section with zeros in case the section is empty.
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* This prevents the kernel from discarding the section at module
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* load time. __kpatch_hooks_load_end will still point to the end of
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* the section before the padding. If the .kpatch.hooks.load section
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* is empty, __kpatch_hooks_load equals __kpatch_hooks_load_end.
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*/
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QUAD(0);
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}
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.kpatch.hooks.unload : {
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__kpatch_hooks_unload = . ;
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*(.kpatch.hooks.unload)
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__kpatch_hooks_unload_end = . ;
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QUAD(0);
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}
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.kpatch.force : {
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__kpatch_force_funcs = . ;
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*(.kpatch.force)
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__kpatch_force_funcs_end = . ;
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QUAD(0);
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}
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}
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