polypath: Provide polypath comm module

[secnet] / util.c

diff --git a/util.c b/util.c
index 0f24282e772d17904092e5c5c7c9d1d465284fea..c459f1340a6d406caf528eebf2f777e173ed3a76 100644 (file)
--- a/util.c
+++ b/util.c
@@ -291,6 +291,14 @@ void buffer_init(struct buffer_if *buffer, int32_t max_start_pad)
     buffer->size=0;
 }
 
     buffer->size=0;
 }
 

+void buffer_destroy(struct buffer_if *buf)
+{
+    BUF_ASSERT_FREE(buf);
+    free(buf->base);
+    buf->start=buf->base=0;
+    buf->size=buf->alloclen=0;
+}
+

 void *buf_append(struct buffer_if *buf, int32_t amount) {
     void *p;
     assert(amount <= buf_remaining_space(buf));
 void *buf_append(struct buffer_if *buf, int32_t amount) {
     void *p;
     assert(amount <= buf_remaining_space(buf));


@@ -605,6 +613,17 @@ int iaddr_socklen(const union iaddr *ia)
     }
 }
 
     }
 }
 

+const char *pollbadbit(int revents)
+{
+#define BADBIT(b) \
+    if ((revents & b)) return #b
+    BADBIT(POLLERR);
+    BADBIT(POLLHUP);
+    /* POLLNVAL is handled by the event loop - see afterpoll_fn comment */
+#undef BADBIT
+    return 0;
+}
+

 enum async_linebuf_result
 async_linebuf_read(struct pollfd *pfd, struct buffer_if *buf,
                   const char **emsg_out)
 enum async_linebuf_result
 async_linebuf_read(struct pollfd *pfd, struct buffer_if *buf,
                   const char **emsg_out)


@@ -612,12 +631,9 @@ async_linebuf_read(struct pollfd *pfd, struct buffer_if *buf,
     int revents=pfd->revents;
 
 #define BAD(m) do{ *emsg_out=(m); return async_linebuf_broken; }while(0)
     int revents=pfd->revents;
 
 #define BAD(m) do{ *emsg_out=(m); return async_linebuf_broken; }while(0)

-#define BADBIT(b) \
-    if (!(revents & b)) ; else BAD(#b)
-    BADBIT(POLLERR);
-    BADBIT(POLLHUP);
-    /* POLLNVAL is handled by the event loop - see afterpoll_fn comment */
-#undef BADBIT
+
+    const char *badbit=pollbadbit(revents);
+    if (badbit) BAD(badbit);

 
     if (!(revents & POLLIN))
        return async_linebuf_nothing;
 
     if (!(revents & POLLIN))
        return async_linebuf_nothing;