First functional version of mfile.

diff --git a/include/mfile.h b/include/mfile.h
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+/*
+ * Copyright (C) 1994, Index Data I/S 
+ * All rights reserved.
+ * Sebastian Hammer, Adam Dickmeiss
+ *
+ * $Log: mfile.h,v $
+ * Revision 1.1  1994-08-23 14:41:46  quinn
+ * First functional version of mfile.
+ *
+ */
+
+#ifndef MFILE_H
+#define MFILE_H
+
+#include <stdio.h>
+
+#include <util.h>
+
+#define MF_MIN_BLOCKS_CREAT 1          /* minimum free blocks in new dir */
+#define MF_DEFAULT_AREA "register"      /* Use if no mf_init */
+#define MF_MAX_PARTS 28                 /* max # of part-files per metafile */
+
+typedef struct mf_dir
+{
+    char name[FILENAME_MAX+1];
+    int max_bytes;      /* allocated bytes in this dir. */
+    int avail_bytes;    /* bytes left */
+    struct mf_dir *next;
+} mf_dir;
+
+typedef struct part_file
+{
+    int number;
+    int top;
+    int blocks;
+    int bytes;
+    mf_dir *dir;
+    char *path;
+    int fd;
+} part_file;
+
+struct MFile_area_struct;
+typedef struct MFile_area_struct *MFile_area;
+
+typedef struct meta_file
+{
+    char name[FILENAME_MAX+1];
+    part_file files[MF_MAX_PARTS];
+    int no_files;
+    int cur_file;
+    int open;                          /* is this file open? */
+    int blocksize;
+    int min_bytes_creat;  /* minimum bytes required to enter directory */
+    MFile_area ma;
+    int wr;
+
+    struct meta_file *next;
+} *MFile, meta_file;
+
+typedef struct MFile_area_struct
+{
+    char name[FILENAME_MAX+1];
+    mf_dir *dirs;
+    struct meta_file *mfiles;
+    struct MFile_area_struct *next;  /* global list of active areas */
+} MFile_area_struct;
+
+/*
+ * Open an area, cotaining metafiles in directories.
+ */
+MFile_area mf_init(const char *name); 
+
+/*
+ * Release an area.
+ */
+int mf_dispose(MFile_area ma);
+
+/*
+ * Open a metafile.
+ */
+MFile mf_open(MFile_area ma, const char *name, int block_size, int wflag);
+
+/*
+ * Close a metafile.
+ */
+int mf_close(MFile mf);
+
+/*
+ * Read one block from a metafile. Interface mirrors bfile.
+ */
+int mf_read(MFile mf, int no, int offset, int num, void *buf);
+
+/*
+ * Same.
+ */
+int mf_write(MFile mf, int no, int offset, int num, const void *buf);
+
+/*
+ * Destroy a metafile, unlinking component files. File must be open.
+ */
+int mf_unlink(MFile mf);
+
+/*
+ * Unlink the file by name, rather than MFile-handle.
+ */
+int mf_unlink_name(MFile_area, const char *name);
+
+#endif