From: Matt Smith Date: Wed, 1 Sep 2021 19:44:37 +0000 (-0700) Subject: libbpf: Change bpf_object_skeleton data field to const pointer X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=08a6f22ef6f843d0ea7252087787b5ab04610bec;p=linux.git libbpf: Change bpf_object_skeleton data field to const pointer This change was necessary to enforce the implied contract that bpf_object_skeleton->data should not be mutated. The data will be cast to `void *` during assignment to handle the case where a user is compiling with older libbpf headers to avoid a compiler warning of `const void *` data being cast to `void *` Signed-off-by: Matt Smith Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20210901194439.3853238-2-alastorze@fb.com --- diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index f177d897c5f71..2f6f0e15d1e7f 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -854,7 +854,7 @@ struct bpf_object_skeleton { size_t sz; /* size of this struct, for forward/backward compatibility */ const char *name; - void *data; + const void *data; size_t data_sz; struct bpf_object **obj;