Libbpf eBPF macro bpf_core_read_user_str
The bpf_core_read_user_str macro abstracts away bpf_probe_read_user_str call and captures offset relocation.
Definition
#define bpf_core_read_user_str(dst, sz, src) \
bpf_probe_read_user_str(dst, sz, (const void *)__builtin_preserve_access_index(src))
Usage
bpf_core_read_user_str is the string variant of the bpf_core_read_user macro. It is better suited for reading NUL-terminated strings from kernel memory.
See the bpf_core_read documentation for more details on usage of it and its variants like this macros.
Example
Docs could be improved
This part of the docs is incomplete, contributions are very welcome