src: add compat header file definitions

This patch restores the original nft_* definitions from the header files to
avoid sudden compilation breakage of the existing clients of this library.

Then, moving forward the idea is to deprecate the old nft_* symbols anytime
soon using __attribute__((deprecated)) from the header files to warn our users
that they need to update their code.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 36 insertions, 0 deletions

diff --git a/include/libnftnl/gen.h b/include/libnftnl/gen.h
index eb72d56..1bb2d56 100644
--- a/include/libnftnl/gen.h
+++ b/include/libnftnl/gen.h
@@ -44,6 +44,42 @@ int nftnl_gen_fprintf(FILE *fp, struct nftnl_gen *gen, uint32_t type, uint32_t f
 #define nftnl_gen_nlmsg_build_hdr	nftnl_nlmsg_build_hdr
 int nftnl_gen_nlmsg_parse(const struct nlmsghdr *nlh, struct nftnl_gen *gen);
 
+/*
+ * Compat
+ */
+
+struct nft_gen;
+
+struct nft_gen *nft_gen_alloc(void);
+void nft_gen_free(struct nft_gen *);
+
+enum {
+	NFT_GEN_ID 	= 0,
+	__NFT_GEN_MAX
+};
+#define NFT_GEN_MAX (__NFT_GEN_MAX - 1)
+
+bool nft_gen_attr_is_set(const struct nft_gen *gen, uint16_t attr);
+void nft_gen_attr_unset(struct nft_gen *gen, uint16_t attr);
+void nft_gen_attr_set(struct nft_gen *gen, uint16_t attr, const void *data);
+void nft_gen_attr_set_data(struct nft_gen *gen, uint16_t attr,
+			     const void *data, uint32_t data_len);
+const void *nft_gen_attr_get(struct nft_gen *gen, uint16_t attr);
+const void *nft_gen_attr_get_data(struct nft_gen *gen, uint16_t attr,
+				    uint32_t *data_len);
+
+void nft_gen_attr_set_u32(struct nft_gen *gen, uint16_t attr, uint32_t data);
+uint32_t nft_gen_attr_get_u32(struct nft_gen *gen, uint16_t attr);
+
+struct nlmsghdr;
+int nft_gen_nlmsg_parse(const struct nlmsghdr *nlh, struct nft_gen *gen);
+
+int nft_gen_snprintf(char *buf, size_t size, struct nft_gen *gen, uint32_t type, uint32_t flags);
+int nft_gen_fprintf(FILE *fp, struct nft_gen *gen, uint32_t type, uint32_t flags);
+
+#define nft_gen_nlmsg_build_hdr	nft_nlmsg_build_hdr
+int nft_gen_nlmsg_parse(const struct nlmsghdr *nlh, struct nft_gen *gen);
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif