From d89a823924d2a7e6d9131acc62ac38c7dec56938 Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Fri, 26 May 2023 20:49:13 +0200
Subject: [PATCH] kernel: Return EACCES when trying to chdir to an unaccessible
 directory

---
 kernel/src/sys/chdir.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/src/sys/chdir.cpp b/kernel/src/sys/chdir.cpp
index 9bf67389..1bdd8a17 100644
--- a/kernel/src/sys/chdir.cpp
+++ b/kernel/src/sys/chdir.cpp
@@ -14,6 +14,7 @@ Result<u64> sys_chdir(Registers*, SyscallArgs args)
         SharedPtr<VFS::Inode> inode = TRY(VFS::resolve_path(path.chars(), current->auth));
 
         if (inode->type() != VFS::InodeType::Directory) return err(ENOTDIR);
+        if (!VFS::can_execute(inode, current->auth)) return err(EACCES);
 
         inode->add_handle();
         if (current->current_directory) current->current_directory->remove_handle();
@@ -28,6 +29,7 @@ Result<u64> sys_chdir(Registers*, SyscallArgs args)
         SharedPtr<VFS::Inode> inode = TRY(VFS::resolve_path(path.chars(), current->auth, current->current_directory));
 
         if (inode->type() != VFS::InodeType::Directory) return err(ENOTDIR);
+        if (!VFS::can_execute(inode, current->auth)) return err(EACCES);
 
         auto old_wdir = current->current_directory_path.view();