Initial Spring 2016 commit.

userland/sbin/sfsck/inode.h

@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009, 2013
+ *	The President and Fellows of Harvard College.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef INODE_H
+#define INODE_H
+
+/*
+ * The inode module accumulates non-local information about files and
+ * directories as other checks are made, and then updates inodes
+ * accordingly after the other checks are done.
+ */
+
+/* Add an inode. Returns 1 if we've seen this inode before. */
+int inode_add(uint32_t ino, int type);
+
+/* Sort the inode table for faster lookup once all inode_add() done. */
+void inode_sorttable(void);
+
+/*
+ * Remember that we've seen a particular directory. Returns nonzero if
+ * we've seen this directory before, which means the directory is
+ * crosslinked. Requires inode_sorttable() first.
+ */
+int inode_visitdir(uint32_t ino);
+
+/*
+ * Count a link to a regular file. (Not called for directories.)
+ * Requires inode_sorttable() first.
+ */
+void inode_addlink(uint32_t ino);
+
+/*
+ * Correct the link counts of regular files, once all inode_addlink()
+ * done.
+ */
+void inode_adjust_filelinks(void);
+
+
+#endif /* INODE_H */