diff options
| author |   Eduard Zingerman <eddyz87@gmail.com> | 2025-07-04 16:03:51 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2025-07-07 08:25:07 -0700 |
| commit | aaa0e57e693083b997f21064689710dfe98b326c (patch) | |
| tree | cf4c509c30702400e2a2762546cdaa23be977fcd | |
| parent | bpf: attribute __arg_untrusted for global function parameters (diff) | |
| download | wireguard-linux-aaa0e57e693083b997f21064689710dfe98b326c.tar.xz wireguard-linux-aaa0e57e693083b997f21064689710dfe98b326c.zip | |
libbpf: __arg_untrusted in bpf_helpers.h
Make btf_decl_tag("arg:untrusted") available for libbpf users via
macro. Makes the following usage possible:
void foo(struct bar *p __arg_untrusted) { ... }
void bar(struct foo *p __arg_trusted) {
...
foo(p->buz->bar); // buz derefrence looses __trusted
...
}
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20250704230354.1323244-6-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| -rw-r--r-- | tools/lib/bpf/bpf_helpers.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/lib/bpf/bpf_helpers.h b/tools/lib/bpf/bpf_helpers.h index 76b127a9f24d..80c028540656 100644 --- a/tools/lib/bpf/bpf_helpers.h +++ b/tools/lib/bpf/bpf_helpers.h @@ -215,6 +215,7 @@ enum libbpf_tristate { #define __arg_nonnull __attribute((btf_decl_tag("arg:nonnull"))) #define __arg_nullable __attribute((btf_decl_tag("arg:nullable"))) #define __arg_trusted __attribute((btf_decl_tag("arg:trusted"))) +#define __arg_untrusted __attribute((btf_decl_tag("arg:untrusted"))) #define __arg_arena __attribute((btf_decl_tag("arg:arena"))) #ifndef ___bpf_concat |