in_tail: add file name context to inotify debug event mask

These messages are useful for debugging except with only
the inode, it you have to do work to match this with
specific files.

Signed-off-by: Wesley Pettit <[email protected]>

plugins/in_tail/tail_fs_inotify.c

@@ -43,21 +43,30 @@ static int debug_event_mask(struct flb_tail_config *ctx,
                             uint32_t mask)
 {
     flb_sds_t buf;
+    int buf_size = 256;
 
     /* Only enter this function if debug mode is allowed */
     if (flb_log_check(FLB_LOG_DEBUG) == 0) {
         return 0;
     }
 
+    if (file) {
+        buf_size = file->name_len + 128;
+    }
+
+    if (buf_size < 256) {
+        buf_size = 256;
+    }
+
     /* Create buffer */
-    buf = flb_sds_create_size(256);
+    buf = flb_sds_create_size(buf_size);
     if (!buf) {
         return -1;
     }
 
     /* Print info into sds */
     if (file) {
-        flb_sds_printf(&buf, "inode=%"PRIu64" events: ", file->inode);
+        flb_sds_printf(&buf, "inode=%"PRIu64", %s, events: ", file->name, file->inode);
     }
     else {
         flb_sds_printf(&buf, "events: ");