Start to implement file interface.

[bertos.git] / fs / battfs.c

diff --git a/fs/battfs.c b/fs/battfs.c
index 97bc897d148e7ceaba7e3c3ac583385bfe032632..da7f305977fdf71ca0fc208ae431f2357d527aa1 100644 (file)
--- a/fs/battfs.c
+++ b/fs/battfs.c
@@ -338,7 +338,7 @@ static void findFreeStartNext(struct BattFsSuper *disk, mark_t minl, mark_t maxl
        {
                /*
                 * No valid interval found.
-                * Hopefully the disk is brand new (or new).
+                * Hopefully the disk is brand new (or full).
                 */
                TRACEMSG("No valid marked free block found, new disk or disk full\n");
                disk->free_start = 0;
@@ -585,9 +585,53 @@ bool battfs_init(struct BattFsSuper *disk)
                return false;
        }
 
+       /* Init list for opened files. */
+       LIST_INIT(&disk->file_opened_list);
        return true;    
 }
 
+/**
+ * Open file \a inode from \a disk in \a mode.
+ * File context is stored in \a fd.
+ * \return true if ok, false otherwise.
+ */
+bool battfs_fileopen(BattFsSuper *disk, KFileBattFs *fd, inode_t inode, filemode_t mode)
+{
+       Node *n;
+
+       memset(fd, 0, sizeof(*fd));
+
+       /* Insert file handle in list, ordered by inode, ascending order. */
+       FOREACH_NODE(n, &disk->file_opened_list)
+       {
+               KFileBattFs *file = containerof(n, KFileBattFs, link);
+               if (file->inode >= inode)
+                       break;
+       }
+       INSERT_BEFORE(n, &fd->link);
+
+       /* Fill in data */
+       fd->inode = inode;
+       fd->mode = mode;
+       fd->disk = disk;
+
+#warning TODO battfs_read, battfs_write, etc...
+#if 0
+       fd->fd.read = battfs_read;
+       fd->fd.write = battfs_write;
+       fd->fd.close = battfs_close;
+       fd->fd.reopen = battfs_reopen;
+       fd->fd.flush = battfs_flush;
+       fd->fd.error = battfs_error;
+       fd->fd.clearerr = battfs_clearerr;
+#endif
+       fd->fd.seek = kfile_genericSeek;
+       DB(fd->fd._type = KFT_BATTFS);
+
+#warning Complete me :-)
+       return true;
+}
+
 /**
  * Close \a disk.
  */