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libbpf: Use string table index from index table if needed
authorJiri Olsa <jolsa@kernel.org>
Thu, 21 Jan 2021 20:22:03 +0000 (21:22 +0100)
committerAndrii Nakryiko <andrii@kernel.org>
Thu, 21 Jan 2021 23:38:01 +0000 (15:38 -0800)
commit6095d5a271ad6dce30489526771a9040d78e0895
tree0c34fa1f2a08cccb91c920318a011df018904a32tree | snapshot
parentb452ee005a9135ed89fc8c9dff14e042770eb4f1commit | diff
libbpf: Use string table index from index table if needed

For very large ELF objects (with many sections), we could
get special value SHN_XINDEX (65535) for elf object's string
table index - e_shstrndx.

Call elf_getshdrstrndx to get the proper string table index,
instead of reading it directly from ELF header.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210121202203.9346-4-jolsa@kernel.org
tools/lib/bpf/btf.c diff | blob | history
Domain: System / Kernel;