update name of code to labcodes

labcodes/lab8/kern/fs/devs/dev.h

@@ -0,0 +1,31 @@
+#ifndef __KERN_FS_DEVS_DEV_H__
+#define __KERN_FS_DEVS_DEV_H__
+
+#include <defs.h>
+
+struct inode;
+struct iobuf;
+
+/*
+ * Filesystem-namespace-accessible device.
+ * d_io is for both reads and writes; the iobuf will indicates the direction.
+ */
+struct device {
+    size_t d_blocks;
+    size_t d_blocksize;
+    int (*d_open)(struct device *dev, uint32_t open_flags);
+    int (*d_close)(struct device *dev);
+    int (*d_io)(struct device *dev, struct iobuf *iob, bool write);
+    int (*d_ioctl)(struct device *dev, int op, void *data);
+};
+
+#define dop_open(dev, open_flags)           ((dev)->d_open(dev, open_flags))
+#define dop_close(dev)                      ((dev)->d_close(dev))
+#define dop_io(dev, iob, write)             ((dev)->d_io(dev, iob, write))
+#define dop_ioctl(dev, op, data)            ((dev)->d_ioctl(dev, op, data))
+
+void dev_init(void);
+struct inode *dev_create_inode(void);
+
+#endif /* !__KERN_FS_DEVS_DEV_H__ */
+