sd-bus: make several functions static

And drop 'bus_' prefix from them.

src/libsystemd/sd-bus/bus-message.c

@@ -22,6 +22,7 @@
 #include "utf8.h"
 
 static int message_append_basic(sd_bus_message *m, char type, const void *p, const void **stored);
+static int message_parse_fields(sd_bus_message *m);
 
 static void *adjust_pointer(const void *p, void *old_base, size_t sz, void *new_base) {
 
@@ -413,7 +414,7 @@ static int message_append_reply_cookie(sd_bus_message *m, uint64_t cookie) {
         }
 }
 
-int bus_message_from_header(
+static int message_from_header(
                 sd_bus *bus,
                 void *header,
                 size_t header_accessible,
@@ -543,7 +544,7 @@ int bus_message_from_malloc(
         size_t sz;
         int r;
 
-        r = bus_message_from_header(
+        r = message_from_header(
                         bus,
                         buffer, length, /* in this case the initial bytes and the final bytes are the same */
                         buffer, length,
@@ -567,7 +568,7 @@ int bus_message_from_malloc(
         m->iovec = m->iovec_fixed;
         m->iovec[0] = IOVEC_MAKE(buffer, length);
 
-        r = bus_message_parse_fields(m);
+        r = message_parse_fields(m);
         if (r < 0)
                 return r;
 
@@ -1195,7 +1196,7 @@ _public_ int sd_bus_message_set_allow_interactive_authorization(sd_bus_message *
         return 0;
 }
 
-struct bus_body_part *message_append_part(sd_bus_message *m) {
+static struct bus_body_part *message_append_part(sd_bus_message *m) {
         struct bus_body_part *part;
 
         assert(m);
@@ -5162,7 +5163,7 @@ static int message_skip_fields(
         }
 }
 
-int bus_message_parse_fields(sd_bus_message *m) {
+static int message_parse_fields(sd_bus_message *m) {
         size_t ri;
         int r;
         uint32_t unix_fds = 0;

src/libsystemd/sd-bus/bus-message.h

@@ -178,19 +178,6 @@ static inline bool BUS_MESSAGE_IS_GVARIANT(sd_bus_message *m) {
 int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz);
 int bus_message_read_strv_extend(sd_bus_message *m, char ***l);
 
-int bus_message_from_header(
-                sd_bus *bus,
-                void *header,
-                size_t header_accessible,
-                void *footer,
-                size_t footer_accessible,
-                size_t message_size,
-                int *fds,
-                size_t n_fds,
-                const char *label,
-                size_t extra,
-                sd_bus_message **ret);
-
 int bus_message_from_malloc(
                 sd_bus *bus,
                 void *buffer,
@@ -203,18 +190,12 @@ int bus_message_from_malloc(
 int bus_message_get_arg(sd_bus_message *m, unsigned i, const char **str);
 int bus_message_get_arg_strv(sd_bus_message *m, unsigned i, char ***strv);
 
-int bus_message_parse_fields(sd_bus_message *m);
-
-struct bus_body_part *message_append_part(sd_bus_message *m);
-
 #define MESSAGE_FOREACH_PART(part, i, m) \
         for ((i) = 0, (part) = &(m)->body; (i) < (m)->n_body_parts; (i)++, (part) = (part)->next)
 
 int bus_body_part_map(struct bus_body_part *part);
 void bus_body_part_unmap(struct bus_body_part *part);
 
-int bus_message_to_errno(sd_bus_message *m);
-
 int bus_message_new_synthetic_error(sd_bus *bus, uint64_t serial, const sd_bus_error *e, sd_bus_message **m);
 
 int bus_message_remarshal(sd_bus *bus, sd_bus_message **m);