1 files changed, 64 insertions, 0 deletions
diff --git a/libstore/open.c b/libstore/open.c
new file mode 100644
index 00000000..ca3eb886
--- /dev/null
+++ b/libstore/open.c
@@ -0,0 +1,64 @@
+/* Store creation from a file name
+
+   Copyright (C) 1996, 97, 98 Free Software Foundation, Inc.
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd 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, or (at
+   your option) any later version.
+
+   The GNU Hurd 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, USA. */
+
+#include <fcntl.h>
+#include <hurd.h>
+
+#include "store.h"
+
+/* Open the file NAME, and return a new store in STORE, which refers to the
+   storage underlying it.  CLASSES is used to select classes specified by the
+   provider; if it is 0, STORE_STD_CLASSES is used.  FLAGS is set with
+   store_set_flags.  A reference to the open file is created (but may be
+   destroyed with store_close_source).  */
+error_t
+store_open (const char *name, int flags,
+	    const struct store_class *const *classes,
+	    struct store **store)
+{
+  error_t err;
+  int open_flags = (flags & STORE_HARD_READONLY) ? O_RDONLY : O_RDWR;
+  file_t node = file_name_lookup (name, open_flags, 0);
+
+  if (node == MACH_PORT_NULL && !(flags & STORE_HARD_READONLY)
+      && (errno == EACCES || errno == EROFS))
+    {
+      flags |= STORE_HARD_READONLY;
+      node = file_name_lookup (name, O_RDONLY, 0);
+    }
+
+  if (node == MACH_PORT_NULL)
+    return errno;
+
+  err = store_create (node, flags, classes, store);
+  if (err)
+    {
+      if (! (flags & STORE_NO_FILEIO))
+	/* Try making a store that does file io to NODE.  */
+	err = store_file_create (node, flags, store);
+      if (err)
+	mach_port_deallocate (mach_task_self (), node);
+    }
+
+  return err;
+}
+
+struct store_class
+store_query_class = { -1, "query", open: store_open };