Kernel: Add unveil('b')

This is a new "browse" permission that lets you open (and subsequently list
contents of) directories underneath the path, but not regular files or any other
types of files.

1 files changed, 2 insertions, 0 deletions

diff --git a/Kernel/FileSystem/ProcFS.cpp b/Kernel/FileSystem/ProcFS.cpp
index 6e5996a23b..4acf07ab14 100644
--- a/Kernel/FileSystem/ProcFS.cpp
+++ b/Kernel/FileSystem/ProcFS.cpp
@@ -644,6 +644,8 @@ static Optional<KBuffer> procfs$pid_unveil(InodeIdentifier identifier)
             permissions_builder.append('x');
         if (unveiled_path.permissions & UnveiledPath::Access::CreateOrRemove)
             permissions_builder.append('c');
+        if (unveiled_path.permissions & UnveiledPath::Access::Browse)
+            permissions_builder.append('b');
         obj.add("permissions", permissions_builder.to_string());
     }
     array.finish();