feat: Vfs and Ext2 support. Code style/attribute improvements

Added VFS and Ext2 support.
Optimized attributes of methods to improve code highlighting.
Printf attribute, malloc attribute, etc.

include/myke/vfs/vfs.h

@@ -0,0 +1,70 @@
+//
+// Created by rick on 19-09-21.
+//
+
+#ifndef NEW_KERNEL_VFS_H
+#define NEW_KERNEL_VFS_H
+
+#include <stdbool.h>
+#include <sys/stat.h>
+
+#define VFS_MOUNT_OK    0
+#define VFS_MOUNT_ERROR 1
+
+#define VFS_OPEN_ERROR 1
+#define VFS_OPEN_OK 0
+
+#define VFS_CLOSE_OK 1
+
+#define VFS_READ_ERROR (-1)
+
+#define VFS_DGETENTS_ERR 1
+
+struct vfs_mount;
+
+typedef struct vfs_mount {
+    struct {
+    } flags;
+    const char *prefix;
+    const char *device;
+    void *driver; // vfs_mount_driver_t
+    void *global_driver_data;
+    struct vfs_mount *next;
+} vfs_mount_t;
+
+typedef struct vfs_fd {
+    struct {
+    } flags;
+    vfs_mount_t *mount;
+    void *driver_data;
+} vfs_fd_t;
+
+#define VFS_DIRENT_BASE_SIZE (4 + 4 + 2 + 1)
+#define VFS_DIRENT_SIZE(name_length) ((VFS_DIRENT_BASE_SIZE + (name_length) + 1 + 15) & (~0xF))
+#define VFS_DIRENT_MAX_SIZE (VFS_DIRENT_BASE_SIZE + 256 + 1)
+
+typedef struct vfs_dirent {
+    uint32_t inode;
+    uint32_t offset_next;
+    uint16_t reclen;
+    uint8_t type;
+    char name[];
+} vfs_dirent_t;
+
+int vfs_mount(const char *path, const char *device, const char *driver);
+
+// https://man7.org/linux/man-pages/man2/open.2.html
+vfs_fd_t *vfs_open(const char *path, int flags, int mode);
+
+void vfs_close(vfs_fd_t *fd);
+
+// https://man7.org/linux/man-pages/man2/stat.2.html
+int vfs_fstat(vfs_fd_t *fd, stat_t *target, int flags);
+
+// https://man7.org/linux/man-pages/man2/read.2.html
+int vfs_read(vfs_fd_t *fd, void *target, size_t size);
+
+// inspiration https://man7.org/linux/man-pages/man2/getdents.2.html
+int vfs_getdents(vfs_fd_t *fd, void *target, int count);
+
+#endif //NEW_KERNEL_VFS_H