Initial revision

1 files changed, 43 insertions, 0 deletions

diff --git a/ufs/hyper.c b/ufs/hyper.c
new file mode 100644
index 00000000..9f5cae8d
--- /dev/null
+++ b/ufs/hyper.c
@@ -0,0 +1,43 @@
+/* Fetching and storing the hypermetadata (superblock and cg summary info).
+   Copyright (C) 1994 Free Software Foundation
+
+   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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+
+void
+get_hypermetadata (void)
+{
+  error_t err;
+  
+  err = dev_read_sync (SBLOCK, (vm_address_t *)&sblock, SBSIZE);
+  assert (!err);
+  
+  /* If this is an old filesystem, then we have some more
+     work to do; some crucial constants might not be set; we
+     are therefore forced to set them here.  */
+  if (sblock->fs_npsect < sblock->fs_nsect)
+    sblock->fs_npsect = sblock->fs_nsect;
+  if (sblock->fs_interleave < 1)
+    sblock->fs_interleave = 1;
+  if (sblock->fs_postblformat == FS_42POSTBLFMT)
+    sblock->fs_nrpos = 8;
+
+  err = dev_read_sync (fsbtodb (sblock->fs_csaddr), (vm_address_t *) &csum,
+		       sblock->fs_fsize * howmany (sblock->fs_cssize, 
+						   sblock->fs_fsize));
+  assert (!err);
+}
+
+