got some of the pty actually working in userspace

kernel/drivers/devfs/devfs.c

@@ -0,0 +1,40 @@
+#include "vfs.h"
+#include <drivers/devfs/devfs.h>
+
+#include <lib/memory.h>
+#include <lib/string.h>
+#include <lib/print.h>
+
+static vfs_node_t* devfs_find(vfs_node_t* parent, const char* name) {
+    vfs_node_t* cur = parent->first_child;
+    if (!cur) return NULL;
+
+    while (cur) {
+        if (strcmp(cur->name, name) == 0) break;
+        cur = cur->next_sibling;
+    }
+
+    return cur;
+}
+
+static vfs_node_t* devfs_create(vfs_node_t* parent, const char* name) {
+    vfs_node_t* node = kalloc(sizeof(vfs_node_t*));
+    memset((void*)node, 0, sizeof(vfs_node_t));
+    strcpy(node->name, name);
+    node->flags = VFS_CHARDEVICE;
+    if (parent->first_child) {
+        node->next_sibling = parent->first_child;
+    }
+    parent->first_child = node;
+    return node;
+}
+
+vfs_node_t* create_devfs() {
+    vfs_node_t* root = kalloc(sizeof(vfs_node_t*));
+    memset((void*)root, 0, sizeof(vfs_node_t));
+    strcpy(root->name, "dev");
+    root->find = devfs_find;
+    root->flags = VFS_DIRECTORY;
+    root->create = devfs_create;
+    return root;
+}