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authorAndrii Nakryiko <andriin@fb.com>2020-08-01 18:32:18 -0700
committerDaniel Borkmann <daniel@iogearbox.net>2020-08-03 16:39:48 +0200
commit8526df04570f5698c97ac661ad1f2f35293557a7 (patch)
tree8f37ce4091a464062dc007399b41868ece56eff2 /tools/bpf
parent94a1fedd63edb672933bef44ca9213937e377c05 (diff)
tools/bpftool: Use libbpf's btf__parse() API for parsing BTF from file
Use generic libbpf API to parse BTF data from file, instead of re-implementing it in bpftool. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20200802013219.864880-3-andriin@fb.com
Diffstat (limited to 'tools/bpf')
-rw-r--r--tools/bpf/bpftool/btf.c54
1 files changed, 1 insertions, 53 deletions
diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
index 37c091308714..8ab142ff5eac 100644
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -422,54 +422,6 @@ done:
return err;
}
-static struct btf *btf__parse_raw(const char *file)
-{
- struct btf *btf;
- struct stat st;
- __u8 *buf;
- FILE *f;
-
- if (stat(file, &st))
- return NULL;
-
- f = fopen(file, "rb");
- if (!f)
- return NULL;
-
- buf = malloc(st.st_size);
- if (!buf) {
- btf = ERR_PTR(-ENOMEM);
- goto exit_close;
- }
-
- if ((size_t) st.st_size != fread(buf, 1, st.st_size, f)) {
- btf = ERR_PTR(-EINVAL);
- goto exit_free;
- }
-
- btf = btf__new(buf, st.st_size);
-
-exit_free:
- free(buf);
-exit_close:
- fclose(f);
- return btf;
-}
-
-static bool is_btf_raw(const char *file)
-{
- __u16 magic = 0;
- int fd, nb_read;
-
- fd = open(file, O_RDONLY);
- if (fd < 0)
- return false;
-
- nb_read = read(fd, &magic, sizeof(magic));
- close(fd);
- return nb_read == sizeof(magic) && magic == BTF_MAGIC;
-}
-
static int do_dump(int argc, char **argv)
{
struct btf *btf = NULL;
@@ -547,11 +499,7 @@ static int do_dump(int argc, char **argv)
}
NEXT_ARG();
} else if (is_prefix(src, "file")) {
- if (is_btf_raw(*argv))
- btf = btf__parse_raw(*argv);
- else
- btf = btf__parse_elf(*argv, NULL);
-
+ btf = btf__parse(*argv, NULL);
if (IS_ERR(btf)) {
err = -PTR_ERR(btf);
btf = NULL;