Initial commit of a libnetfs-based tarfs including a gzip/bzip2 store.

1 files changed, 88 insertions, 0 deletions

diff --git a/debug.c b/debug.c
new file mode 100644
index 000000000..f406b4308
--- /dev/null
+++ b/debug.c
@@ -0,0 +1,88 @@
+/* tarfs - A GNU tar filesystem for the Hurd.
+   Copyright (C) 2002, Ludovic Courtès <ludo@type-z.org>
+ 
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or * (at your option) any later version.
+ 
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+ 
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+   USA */
+
+/*
+ * General debugging output tools.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <error.h>
+#include <string.h>
+#include <cthreads.h>
+
+
+static struct mutex debug_lock;
+static char *debug_function = NULL;
+static FILE *debug_file = NULL;
+
+/* Sets the debugging output file.  */
+void
+debug_set_file (const char *name)
+{
+  if (!strcmp (name, "-"))
+    debug_file = stderr;
+  else
+  {
+    debug_file = fopen (name, "w+");
+    if (!debug_file)
+      error (0, errno, name);
+  }
+}
+
+
+void
+__debug_start (const char *function)
+{
+  if (!debug_file)
+    return;
+
+  mutex_lock (&debug_lock);
+  debug_function = strdup (function);
+}
+
+void
+__debug (const char *fmt, ...)
+{
+  va_list ap;
+
+  if (!debug_file)
+    return;
+
+  fprintf (debug_file, "%s: ", debug_function);
+
+  va_start (ap, fmt);
+  vfprintf (debug_file, fmt, ap);
+  va_end (ap);
+
+  fprintf (debug_file, "\n");
+}
+
+void
+__debug_end ()
+{
+  if (!debug_file)
+    return;
+
+  free (debug_function);
+  debug_function = NULL;
+  fflush (debug_file);
+  mutex_unlock (&debug_lock);
+}