feat: ability to evict dnode and inode cache

[lunaix-os.git] / lunaix-os / kernel / fs / twifs / twifs.c

diff --git a/lunaix-os/kernel/fs/twifs/twifs.c b/lunaix-os/kernel/fs/twifs/twifs.c
index 506d604abf4cdc974eb9131f796d9debe1553370..a40340f6eedf85594b709a47d570dd57e3968796 100644 (file)
--- a/lunaix-os/kernel/fs/twifs/twifs.c
+++ b/lunaix-os/kernel/fs/twifs/twifs.c
@@ -19,6 +19,8 @@ static struct twifs_node* fs_root;
 
 static struct cake_pile* twi_pile;
 
+static volatile int32_t inode_id = 0;
+
 int
 __twifs_dirlookup(struct v_inode* inode, struct v_dnode* dnode);
 
@@ -41,7 +43,7 @@ int
 __twifs_mkdir(struct v_inode* inode, struct v_dnode* dnode);
 
 int
-__twifs_rmstuff(struct v_inode* inode);
+__twifs_rmstuff(struct v_inode* inode, struct v_dnode* dir);
 
 int
 __twifs_fwrite(struct v_inode* inode, void* buffer, size_t len, size_t fpos);
@@ -58,6 +60,7 @@ twifs_init()
     twifs->fs_name = HSTR("twifs", 5);
     twifs->mount = __twifs_mount;
     twifs->types = FSTYPE_ROFS;
+    twifs->fs_id = 0;
 
     fsm_register(twifs);
 
@@ -92,7 +95,6 @@ twifs_rm_node(struct twifs_node* node)
         return ENOTEMPTY;
     }
     llist_delete(&node->siblings);
-    vfs_i_free(node->inode);
     cake_release(twi_pile, node);
     return 0;
 }
@@ -143,28 +145,20 @@ twifs_toplevel_node(const char* name, int name_len, uint32_t itype)
 int
 __twifs_mkdir(struct v_inode* inode, struct v_dnode* dnode)
 {
-    struct twifs_node* parent_node = (struct twifs_node*)inode->data;
-    if (!(parent_node->itype & VFS_IFDIR)) {
-        return ENOTDIR;
-    }
-    struct twifs_node* new_node =
-      twifs_dir_node(parent_node, dnode->name.value, dnode->name.len, 0);
-    dnode->inode = new_node->inode;
-
-    return 0;
+    return ENOTSUP;
 }
 
 int
 __twifs_mount(struct v_superblock* vsb, struct v_dnode* mount_point)
 {
-    mount_point->inode = fs_root->inode;
+    vfs_assign_inode(mount_point, fs_root->inode);
     return 0;
 }
 
 struct v_inode*
 __twifs_create_inode(struct twifs_node* twi_node)
 {
-    struct v_inode* inode = vfs_i_alloc();
+    struct v_inode* inode = vfs_i_alloc(1, inode_id++);
     inode->itype = twi_node->itype;
     inode->data = twi_node;
 
@@ -174,7 +168,6 @@ __twifs_create_inode(struct twifs_node* twi_node)
 
     inode->ops.dir_lookup = __twifs_dirlookup;
     inode->ops.mkdir = __twifs_mkdir;
-    inode->ops.unlink = __twifs_rmstuff;
     inode->ops.rmdir = __twifs_rmstuff;
     inode->ops.open = __twifs_openfile;
 
@@ -222,10 +215,9 @@ __twifs_get_node(struct twifs_node* parent, struct hstr* name)
 }
 
 int
-__twifs_rmstuff(struct v_inode* inode)
+__twifs_rmstuff(struct v_inode* inode, struct v_dnode* dir)
 {
-    struct twifs_node* twi_node = (struct twifs_node*)inode->data;
-    return twifs_rm_node(twi_node);
+    return ENOTSUP;
 }
 
 int
@@ -239,7 +231,7 @@ __twifs_dirlookup(struct v_inode* inode, struct v_dnode* dnode)
 
     struct twifs_node* child_node = __twifs_get_node(twi_node, &dnode->name);
     if (child_node) {
-        dnode->inode = child_node->inode;
+        vfs_assign_inode(dnode, child_node->inode);
         return 0;
     }
     return ENOENT;