libnftnl: constify object arguments to various functions

flow table support needs constant object arguments to printing functions
to avoid ugly casts. While at it, also constify object arguments to message
construction, destructor and a few helper functions.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 14 insertions, 10 deletions

diff --git a/src/set_elem.c b/src/set_elem.c
index db367bd..d8c4758 100644
--- a/src/set_elem.c
+++ b/src/set_elem.c
@@ -599,7 +599,8 @@ int nftnl_set_elem_parse_file(struct nftnl_set_elem *e, enum nftnl_parse_type ty
 EXPORT_SYMBOL_ALIAS(nftnl_set_elem_parse_file, nft_set_elem_parse_file);
 
 static int nftnl_set_elem_snprintf_json(char *buf, size_t size,
-				      struct nftnl_set_elem *e, uint32_t flags)
+					const struct nftnl_set_elem *e,
+					uint32_t flags)
 {
 	int ret, len = size, offset = 0, type = -1;
 
@@ -641,7 +642,7 @@ static int nftnl_set_elem_snprintf_json(char *buf, size_t size,
 }
 
 static int nftnl_set_elem_snprintf_default(char *buf, size_t size,
-					 struct nftnl_set_elem *e)
+					   const struct nftnl_set_elem *e)
 {
 	int ret, len = size, offset = 0, i;
 
@@ -684,7 +685,8 @@ static int nftnl_set_elem_snprintf_default(char *buf, size_t size,
 }
 
 static int nftnl_set_elem_snprintf_xml(char *buf, size_t size,
-				     struct nftnl_set_elem *e, uint32_t flags)
+				       const struct nftnl_set_elem *e,
+				       uint32_t flags)
 {
 	int ret, len = size, offset = 0, type = DATA_NONE;
 
@@ -735,8 +737,9 @@ static int nftnl_set_elem_snprintf_xml(char *buf, size_t size,
 }
 
 static int nftnl_set_elem_cmd_snprintf(char *buf, size_t size,
-				     struct nftnl_set_elem *e, uint32_t cmd,
-				     uint32_t type, uint32_t flags)
+				       const struct nftnl_set_elem *e,
+				       uint32_t cmd, uint32_t type,
+				       uint32_t flags)
 {
 	int ret, len = size, offset = 0;
 
@@ -765,17 +768,18 @@ static int nftnl_set_elem_cmd_snprintf(char *buf, size_t size,
 	return offset;
 }
 
-int nftnl_set_elem_snprintf(char *buf, size_t size, struct nftnl_set_elem *e,
-			      uint32_t type, uint32_t flags)
+int nftnl_set_elem_snprintf(char *buf, size_t size,
+			    const struct nftnl_set_elem *e,
+			    uint32_t type, uint32_t flags)
 {
 	return nftnl_set_elem_cmd_snprintf(buf, size, e, nftnl_flag2cmd(flags),
 					 type, flags);
 }
 EXPORT_SYMBOL_ALIAS(nftnl_set_elem_snprintf, nft_set_elem_snprintf);
 
-static inline int nftnl_set_elem_do_snprintf(char *buf, size_t size, void *e,
-					   uint32_t cmd, uint32_t type,
-					   uint32_t flags)
+static inline int nftnl_set_elem_do_snprintf(char *buf, size_t size,
+					     const void *e, uint32_t cmd,
+					     uint32_t type, uint32_t flags)
 {
 	return nftnl_set_elem_snprintf(buf, size, e, type, flags);
 }