Remove goto from daemon: logging module

 Also, this should remove a false-positive issue detected by Coverity
Scan Issue 740453.

diff --git a/src/log/ModDaemon.cc b/src/log/ModDaemon.cc
index b89f46b47d1120f26c3852b9afbd418a7bd896b1..e9fbd8f0e88466afba7ddc9dad32799ced068ace 100644 (file)
--- a/src/log/ModDaemon.cc
+++ b/src/log/ModDaemon.cc
@@ -113,26 +113,29 @@ logfileFreeBuffer(Logfile * lf, logfile_buffer_t * b)
 static void
 logfileHandleWrite(int fd, void *data)
 {
-    Logfile *lf = (Logfile *) data;
-    l_daemon_t *ll = (l_daemon_t *) lf->data;
-    int ret;
-    logfile_buffer_t *b;
+    Logfile *lf = static_cast<Logfile *>(data);
+    l_daemon_t *ll = static_cast<l_daemon_t *>(lf->data);
 
     /*
      * We'll try writing the first entry until its done - if we
      * get a partial write then we'll re-schedule until its completed.
      * Its naive but it'll do for now.
      */
-    b = static_cast<logfile_buffer_t*>(ll->bufs.head->data);
+    if (!ll->bufs.head) // abort if there is nothing pending right now.
+        return;
+
+    logfile_buffer_t *b = static_cast<logfile_buffer_t*>(ll->bufs.head->data);
     assert(b != NULL);
     ll->flush_pending = 0;
 
-    ret = FD_WRITE_METHOD(ll->wfd, b->buf + b->written_len, b->len - b->written_len);
-    debugs(50, 3, "logfileHandleWrite: " << lf->path << ": write returned " << ret);
+    int ret = FD_WRITE_METHOD(ll->wfd, b->buf + b->written_len, b->len - b->written_len);
+    debugs(50, 3, lf->path << ": write returned " << ret);
     if (ret < 0) {
         if (ignoreErrno(errno)) {
             /* something temporary */
-            goto reschedule;
+            Comm::SetSelect(ll->wfd, COMM_SELECT_WRITE, logfileHandleWrite, lf, 0);
+            ll->flush_pending = 1;
+            return;
         }
         debugs(50, DBG_IMPORTANT,"logfileHandleWrite: " << lf->path << ": error writing (" << xstrerror() << ")");
         /* XXX should handle this better */
@@ -153,15 +156,12 @@ logfileHandleWrite(int fd, void *data)
         b = NULL;
     }
     /* Is there more to write? */
-    if (ll->bufs.head == NULL) {
-        goto finish;
-    }
+    if (!ll->bufs.head)
+        return;
     /* there is, so schedule more */
 
-reschedule:
     Comm::SetSelect(ll->wfd, COMM_SELECT_WRITE, logfileHandleWrite, lf, 0);
     ll->flush_pending = 1;
-finish:
     return;
 }