diff options
Diffstat (limited to 'tools/bpf/bpftool/btf.c')
| -rw-r--r-- | tools/bpf/bpftool/btf.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c index a7b8bf233cf5..e5bc97b71ceb 100644 --- a/tools/bpf/bpftool/btf.c +++ b/tools/bpf/bpftool/btf.c @@ -428,15 +428,15 @@ exit_close: static bool is_btf_raw(const char *file) { __u16 magic = 0; - int fd; + int fd, nb_read; fd = open(file, O_RDONLY); if (fd < 0) return false; - read(fd, &magic, sizeof(magic)); + nb_read = read(fd, &magic, sizeof(magic)); close(fd); - return magic == BTF_MAGIC; + return nb_read == sizeof(magic) && magic == BTF_MAGIC; } static int do_dump(int argc, char **argv) |