examples: add example for CO-RE kernel struct (tcp_sock) #602
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chenhengqi
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Mar 21, 2022
gmichelo
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lmb
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Mar 29, 2022
lmb
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Mar 29, 2022
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Awesome, thank you! Excellent comments and documentation. I'll try to feature it more prominently as a CO-RE example. I've made a few small changes to the build system (running clang-format in CI) and moved some headers around. Will apply a fix before merging. |
This commit adds a new `fentry` program to showcase how `preserve_access_index` can be used to read fields from kernel structs without knowing the entire struct definition. That is, CO-RE takes care of finding the offset of the field the caller is looking for within the struct in the host kernel.
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This commit adds a new
fentryexample to showcase how__attribute__((preserve_access_index))can be used to read fields from kernel structs without the entire struct
definition. This leverage the CO-RE relocatable feature.