Fixup debug output (#1617)

src/config_debug.cpp

@@ -0,0 +1,63 @@
+/*
+  ISC License
+
+  Copyright (c) 2026, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "config_debug.hpp"
+
+#include "debug.hpp"
+#include "from_string.hpp"
+#include "fuse_cfg.hpp"
+#include "to_string.hpp"
+
+#include <memory>
+#include <string>
+
+Debug::Debug(const bool v_)
+{
+  fuse_cfg.debug = v_;
+}
+
+std::string
+Debug::to_string(void) const
+{
+  return str::to(fuse_cfg.debug);
+}
+
+int
+Debug::from_string(const std::string_view s_)
+{
+  int rv;
+  bool val;
+
+  rv = str::from(s_,&val);
+  if(rv < 0)
+    return rv;
+
+  fuse_cfg.debug = val;
+
+  // If debug is being enabled, ensure output file is set
+  if(val)
+    {
+      auto log_file_path = fuse_cfg.log_filepath();
+      if(log_file_path && !log_file_path->empty())
+        fuse_debug_set_output(*log_file_path);
+      else
+        fuse_debug_set_output({}); // Use stderr
+    }
+
+  return 0;
+}