bpf tools: Add new API bpf_object__get_kversion()

[deliverable/linux.git] / tools / lib / bpf / libbpf.h

diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index f16170c95ffdc2306aa02f836092661b2673408e..c9a9aef2806cbfbef033668920ab8cae02ca2e8d 100644 (file)
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -10,6 +10,26 @@
 
 #include <stdio.h>
 #include <stdbool.h>
+#include <linux/err.h>
+
+enum libbpf_errno {
+       __LIBBPF_ERRNO__START = 4000,
+
+       /* Something wrong in libelf */
+       LIBBPF_ERRNO__LIBELF = __LIBBPF_ERRNO__START,
+       LIBBPF_ERRNO__FORMAT,   /* BPF object format invalid */
+       LIBBPF_ERRNO__KVERSION, /* Incorrect or no 'version' section */
+       LIBBPF_ERRNO__ENDIAN,   /* Endian missmatch */
+       LIBBPF_ERRNO__INTERNAL, /* Internal error in libbpf */
+       LIBBPF_ERRNO__RELOC,    /* Relocation failed */
+       LIBBPF_ERRNO__LOAD,     /* Load program failure for unknown reason */
+       LIBBPF_ERRNO__VERIFY,   /* Kernel verifier blocks program loading */
+       LIBBPF_ERRNO__PROG2BIG, /* Program too big */
+       LIBBPF_ERRNO__KVER,     /* Incorrect kernel version */
+       __LIBBPF_ERRNO__END,
+};
+
+int libbpf_strerror(int err, char *buf, size_t size);
 
 /*
  * In include/linux/compiler-gcc.h, __printf is defined. However
@@ -36,6 +56,7 @@ void bpf_object__close(struct bpf_object *object);
 int bpf_object__load(struct bpf_object *obj);
 int bpf_object__unload(struct bpf_object *obj);
 const char *bpf_object__get_name(struct bpf_object *obj);
+unsigned int bpf_object__get_kversion(struct bpf_object *obj);
 
 struct bpf_object *bpf_object__next(struct bpf_object *prev);
 #define bpf_object__for_each_safe(pos, tmp)                    \
@@ -63,7 +84,7 @@ int bpf_program__set_private(struct bpf_program *prog, void *priv,
 int bpf_program__get_private(struct bpf_program *prog,
                             void **ppriv);
 
-const char *bpf_program__title(struct bpf_program *prog, bool dup);
+const char *bpf_program__title(struct bpf_program *prog, bool needs_copy);
 
 int bpf_program__fd(struct bpf_program *prog);