[PATCH bpf-next v4 4/8] bpftool: Implement btf_save_raw()
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STALE1725d
SUPERSEDED
From: Mauricio Vásquez <hidden>
Date: 2022-01-12 14:27:51
Also in:
bpf
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [tooling] (bpftool), the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Quentin Monnet, Linus Torvalds
Revision v4 of 4 in this series.
Revisions (4)
- v4 current
- v5 [diff vs current]
- v6 [diff vs current]
- v7 [diff vs current]
Helper function to save a BTF object to a file. Signed-off-by: Mauricio Vásquez <redacted> Signed-off-by: Rafael David Tinoco <redacted> Signed-off-by: Lorenzo Fontana <redacted> Signed-off-by: Leonardo Di Donato <redacted> --- tools/bpf/bpftool/gen.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+)
diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c
index cdeb1047d79d..5a74fb68dc84 100644
--- a/tools/bpf/bpftool/gen.c
+++ b/tools/bpf/bpftool/gen.c@@ -1096,6 +1096,36 @@ static int do_help(int argc, char **argv) return 0; } +static int btf_save_raw(const struct btf *btf, const char *path) +{ + const void *data; + FILE *f = NULL; + __u32 data_sz; + int err = 0; + + data = btf__raw_data(btf, &data_sz); + if (!data) { + err = -ENOMEM; + goto out; + } + + f = fopen(path, "wb"); + if (!f) { + err = -errno; + goto out; + } + + if (fwrite(data, 1, data_sz, f) != data_sz) { + err = -errno; + goto out; + } + +out: + if (f) + fclose(f); + return err; +} + /* Create BTF file for a set of BPF objects */ static int btfgen(const char *src_btf, const char *dst_btf, const char *objspaths[]) {
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2.25.1