1 files changed, 131 insertions, 0 deletions
diff --git a/pattern.c b/pattern.c
new file mode 100644
index 0000000..68a0791
--- /dev/null
+++ b/pattern.c
@@ -0,0 +1,131 @@
+/* Hurd unionfs
+   Copyright (C) 2001, 2002, 2005 Free Software Foundation, Inc.
+   Written by Gianluca Guida <glguida@gmail.com>.
+
+   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.  */
+
+/* Pattern list management.  */
+
+#define _GNU_SOURCE
+
+#include <hurd/netfs.h>
+#include <stdlib.h>
+#include <fnmatch.h>
+#include <errno.h>
+
+#include "pattern.h"
+
+/* Add a wildcard expression *PATTERN to **PATTERNLIST.  */
+error_t
+patternlist_add (struct patternlist *list, char *pattern)
+{
+  error_t err = 0;
+  struct pattern *listentry;
+  char *dup;
+
+  if (pattern == NULL) /* BUG.  */
+    err = EINVAL;
+  
+  if (err)
+    return err;
+
+  dup = strdup (pattern);
+  if (dup == NULL) 
+    err = ENOMEM;
+
+  if (err)
+      return err;
+
+  listentry = malloc (sizeof (struct pattern));
+  if (listentry == NULL) 
+    err = ENOMEM;
+
+  if (err)
+      return err;
+
+  listentry->pattern = dup;
+
+  mutex_lock (& (list->lock));
+  if (list->head == NULL) /* List is empty.  */
+    {
+      list->head = listentry;
+      listentry->next = NULL;
+    }
+  else
+    {
+      listentry->next = list->head;
+      list->head = listentry;
+    }
+  mutex_unlock (& (list->lock));
+
+  return err;
+}
+
+/* Check for match all pattern of the list *LIST, returning logical OR
+   of results.  */
+int
+patternlist_match (struct patternlist *list, char *string)
+{
+  struct pattern *ptr;
+  error_t err = ~0; /* Return false by default */
+
+  ptr = list->head;
+
+  mutex_lock (&list->lock);
+  while (ptr != NULL)
+    {
+      err = fnmatch (ptr->pattern, string, FNM_FILE_NAME);
+
+      if (!err) /* String matched.  */
+	break;
+
+      ptr = ptr->next;
+    }
+  mutex_unlock (&list->lock);
+
+  return err;
+}
+
+/* Free all resource used by *PATTERNLIST.  */
+void
+patternlist_destroy (struct patternlist *list)
+{
+  struct pattern *next, *ptr = list->head;
+
+  mutex_lock (& (list->lock));
+  while (ptr != NULL)
+    {
+      next = ptr->next;
+
+      free (ptr);
+
+      ptr = next;
+    }
+  mutex_unlock (& (list->lock));
+}
+
+/* Return nonzero if *PATTERNLIST is empty.  */
+int
+patternlist_isempty (struct patternlist *list)
+{
+  int ret;
+
+  mutex_lock (& (list->lock));
+  ret = (list->head == NULL);
+  mutex_unlock (& (list->lock));
+
+  return ret;
+}