xnu-792.6.76.tar.gz

[apple/xnu.git] / bsd / vfs / vfs_journal.h

diff --git a/bsd/vfs/vfs_journal.h b/bsd/vfs/vfs_journal.h
index cf87d421eaa8540eabf1d0d65cb51c5737ddbfa1..b03209b9a768ed9ec1e4d7988e691ec30fe5f0b9 100644 (file)
--- a/bsd/vfs/vfs_journal.h
+++ b/bsd/vfs/vfs_journal.h
@@ -202,6 +202,19 @@ journal  *journal_open(struct vnode *jvp,
                                           void        (*flush)(void *arg),
                                           void         *arg);
 
+/*
+ * Test whether the journal is clean or not.  This is intended
+ * to be used when you're mounting read-only.  If the journal
+ * is not clean for some reason then you should not mount the
+ * volume as your data structures may be in an unknown state.
+ */
+int journal_is_clean(struct vnode *jvp,
+                    off_t         offset,
+                    off_t         journal_size,
+                    struct vnode *fsvp,
+                     size_t        min_fs_block_size);
+
+
 /*
  * Call journal_close() just before your file system is unmounted.
  * It flushes any outstanding transactions and makes sure the