feat: symlink(2) and realpathat syscall

[lunaix-os.git] / lunaix-os / includes / lunaix / fs.h

diff --git a/lunaix-os/includes/lunaix/fs.h b/lunaix-os/includes/lunaix/fs.h
index fffb26f5cd07f69db888544436dc450d14e74e18..bc22fd537e371c13f1c7c32e39f9256726a3c26b 100644 (file)
--- a/lunaix-os/includes/lunaix/fs.h
+++ b/lunaix-os/includes/lunaix/fs.h
@@ -13,7 +13,8 @@
 
 #define VFS_INODE_TYPE_DIR 0x1
 #define VFS_INODE_TYPE_FILE 0x2
-#define VFS_INODE_TYPE_DEVICE 0x3
+#define VFS_INODE_TYPE_DEVICE 0x4
+#define VFS_INODE_TYPE_SYMLINK 0x8
 
 #define VFS_ENOFS -2
 #define VFS_EBADMNT -3
@@ -26,6 +27,7 @@
 #define VFS_WALK_MKPARENT 0x1
 #define VFS_WALK_FSRELATIVE 0x2
 #define VFS_WALK_PARENT 0x4
+#define VFS_WALK_NOFOLLOW 0x4
 
 #define VFS_IOBUF_FDIRTY 0x1
 
@@ -100,6 +102,7 @@ struct v_fd
 {
     struct v_file* file;
     int pos;
+    int flags;
 };
 
 struct v_inode
@@ -109,18 +112,22 @@ struct v_inode
     uint32_t mtime;
     uint64_t lb_addr;
     uint32_t open_count;
+    uint32_t link_count;
     uint32_t lb_usage;
     uint32_t fsize;
     void* data; // 允许底层FS绑定他的一些专有数据
     struct
     {
-        int (*create)(struct v_inode* inode, struct v_file* file);
-        int (*open)(struct v_inode* inode, struct v_file* file);
-        int (*sync)(struct v_inode* inode);
-        int (*mkdir)(struct v_inode* inode, struct v_dnode* dnode);
-        int (*rmdir)(struct v_inode* inode);
-        int (*unlink)(struct v_inode* inode);
-        int (*dir_lookup)(struct v_inode* inode, struct v_dnode* dnode);
+        int (*create)(struct v_inode* this, struct v_file* file);
+        int (*open)(struct v_inode* this, struct v_file* file);
+        int (*sync)(struct v_inode* this);
+        int (*mkdir)(struct v_inode* this, struct v_dnode* dnode);
+        int (*rmdir)(struct v_inode* this);
+        int (*unlink)(struct v_inode* this);
+        int (*link)(struct v_inode* this, struct v_dnode* new_name);
+        int (*read_symlink)(struct v_inode* this, const char** path_out);
+        int (*symlink)(struct v_inode* this, const char* target);
+        int (*dir_lookup)(struct v_inode* this, struct v_dnode* dnode);
     } ops;
 };