starting to create sysfs

1 files changed, 53 insertions, 0 deletions

diff --git a/fs/mount.h b/fs/mount.h
new file mode 100644
index 0000000..4e61c28
--- /dev/null
+++ b/fs/mount.h
@@ -0,0 +1,53 @@
+/**
+ * @file
+ * Simple mount point manager
+ * ==========================
+ *
+ * Add up to MAX_MOUNTS (as defined in kernel.h) mounts and use
+ * mount_file_open() and mount_read_dir() to transparently 
+ * be dispatch the underlying commands to them based on the supplied paths.
+ *
+ * Mount directories should exist on root direcotry '/'
+ */
+
+#ifndef MOUNT_H
+#define MOUNT_H
+
+#include <stdint.h>
+#include "interface/fs.h" // fs_dirent for read_dir
+#include "fd.h" // file descriptor returned by open
+
+/** the possible values for mount_struct.type */
+enum MOUNT_TYPE{
+    MOUNT_TYPE_EXT2	=	1,
+    MOUNT_TYPE_PIPES	=	2,
+    MOUNT_TYPE_SYS	=	3
+};
+
+/** struct telling all we need about a single mountpoint */
+typedef struct mount_struct
+{
+    uint32_t type;    // MOUNT_TYPE
+
+    char path[256];   // where are we mounted (provide leading and trailing slash!)
+
+    fd   (*mount_file_open)(struct mount_struct*, char *path);
+    int  (*mount_read_dir) (struct mount_struct*, char *path, fs_dirent *dirs, uint32_t *pos);
+
+    void *data; //opaque data
+
+}mount;
+
+/** dumps mount info to klog */
+void mount_dump();
+
+/** adds a new mountpoints */
+void mount_add(mount mnt);
+
+/** dispatchers to according mount points */
+fd mount_file_open(char *path);
+
+/** TODO: should use fd number instead of PATH on each call*/
+int  mount_read_dir (char *path, fs_dirent *dirs, uint32_t *pos);
+
+#endif