diff options
author | Andrii Nakryiko <andriin@fb.com> | 2020-08-01 18:32:18 -0700 |
---|---|---|
committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-08-03 16:39:48 +0200 |
commit | 8526df04570f5698c97ac661ad1f2f35293557a7 (patch) | |
tree | 8f37ce4091a464062dc007399b41868ece56eff2 /tools/bpf | |
parent | 94a1fedd63edb672933bef44ca9213937e377c05 (diff) | |
download | linux-8526df04570f5698c97ac661ad1f2f35293557a7.tar.bz2 |
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.c | 54 |
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; |