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| author | Andrii Nakryiko <andriin@fb.com> | 2019-05-22 10:51:28 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2019-05-22 18:34:01 -0700 |
| commit | 9efc7794496d531593751a3fb008030d5f9ba87c (patch) | |
| tree | 0c9613377f7cc96d338b7a4bcc93a85d033fe111 /tools | |
| parent | 14a1eaa8820e8f3715f0cb3c1790edab67a751e9 (diff) | |
| download | linux-9efc7794496d531593751a3fb008030d5f9ba87c.tar.gz linux-9efc7794496d531593751a3fb008030d5f9ba87c.tar.bz2 linux-9efc7794496d531593751a3fb008030d5f9ba87c.zip | |
libbpf: emit diff of mismatched public API, if any
It's easy to have a mismatch of "intended to be public" vs really
exposed API functions. While Makefile does check for this mismatch, if
it actually occurs it's not trivial to determine which functions are
accidentally exposed. This patch dumps out a diff showing what's not
supposed to be exposed facilitating easier fixing.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/lib/bpf/Makefile | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile index f91639bf5650..a2aceadf68db 100644 --- a/tools/lib/bpf/Makefile +++ b/tools/lib/bpf/Makefile @@ -204,6 +204,16 @@ check_abi: $(OUTPUT)libbpf.so "versioned symbols in $^ ($(VERSIONED_SYM_COUNT))." \ "Please make sure all LIBBPF_API symbols are" \ "versioned in $(VERSION_SCRIPT)." >&2; \ + readelf -s --wide $(OUTPUT)libbpf-in.o | \ + awk '/GLOBAL/ && /DEFAULT/ && !/UND/ {print $$8}'| \ + sort -u > $(OUTPUT)libbpf_global_syms.tmp; \ + readelf -s --wide $(OUTPUT)libbpf.so | \ + grep -Eo '[^ ]+@LIBBPF_' | cut -d@ -f1 | \ + sort -u > $(OUTPUT)libbpf_versioned_syms.tmp; \ + diff -u $(OUTPUT)libbpf_global_syms.tmp \ + $(OUTPUT)libbpf_versioned_syms.tmp; \ + rm $(OUTPUT)libbpf_global_syms.tmp \ + $(OUTPUT)libbpf_versioned_syms.tmp; \ exit 1; \ fi |