1 files changed, 74 insertions, 0 deletions
diff --git a/kernel/src/generic/vfs.hpp b/kernel/src/generic/vfs.hpp
new file mode 100644
index 0000000..8736d42
--- /dev/null
+++ b/kernel/src/generic/vfs.hpp
@@ -0,0 +1,74 @@
+#pragma once
+#include <cstdint>
+#include <drivers/disk.hpp>
+#include <generic/lock/mutex.hpp>
+#include <utils/linux.hpp>
+
+enum class file_descriptor_type : std::uint8_t {
+    unallocated = 0,
+    file = 1,
+    pipe = 2,
+    socket = 3,
+    epoll = 4,
+    memfd = 5
+};
+
+struct stat {
+    dev_t     st_dev;       
+    ino_t     st_ino;         
+    mode_t    st_mode;   
+    nlink_t   st_nlink;       
+    uid_t     st_uid;      
+    gid_t     st_gid;        
+    dev_t     st_rdev;      
+    off_t     st_size;       
+    blksize_t st_blksize;    
+    blkcnt_t  st_blocks;     
+
+    struct timespec st_atim;
+    struct timespec st_mtim; 
+    struct timespec st_ctim;  
+
+#define st_atime st_atim.tv_sec    
+#define st_mtime st_mtim.tv_sec
+#define st_ctime st_ctim.tv_sec
+};
+
+struct filesystem { 
+    locks::mutex lock;
+
+    std::uint32_t (*open)(void* file_desc, char* path);
+    
+    char path[2048];
+};
+
+struct file_descriptor {
+    
+    file_descriptor_type type;
+    std::uint32_t flags;
+
+    union fs_specific {
+        std::uint64_t ino;
+        std::uint64_t tmpfs_pointer;
+    };
+
+    struct vnode {
+        disk* target_disk;
+        filesystem* fs;
+
+        signed long (*read)(file_descriptor* file, void* buffer, signed long count);
+        signed long (*write)(file_descriptor* file, void* buffer, signed long count);
+        signed long (*stat)(file_descriptor* file, stat* out);
+        void (*close)(file_descriptor* file);
+    };
+
+};
+
+namespace vfs {
+
+    void init();
+    void open(file_descriptor* fd, char* path, bool follow_symlinks );
+    void create(char* path, std::uint32_t mode); // mode contains type too
+}
+
+// fs should setup this during open