From 67e954367501c65a24e3451112e137586b5b7df4 Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Tue, 18 Apr 2023 18:46:19 +0200
Subject: [PATCH] os: Add FileSystem::change_directory

---
 apps/sh.cpp                   |  4 ++--
 libos/include/os/FileSystem.h |  2 ++
 libos/src/FileSystem.cpp      | 10 ++++++++++
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/apps/sh.cpp b/apps/sh.cpp
index 01d43793..0e16bcc8 100644
--- a/apps/sh.cpp
+++ b/apps/sh.cpp
@@ -75,11 +75,11 @@ Result<int> luna_main(int argc, char** argv)
             if (args.size() == 1)
             {
                 auto home = TRY(os::FileSystem::home_directory());
-                if (chdir(home.chars()) < 0) perror("cd");
+                TRY(os::FileSystem::change_directory(home.view()));
                 continue;
             }
 
-            if (chdir(args[1].chars()) < 0) perror("cd");
+            TRY(os::FileSystem::change_directory(args[1].view()));
             continue;
         }
 
diff --git a/libos/include/os/FileSystem.h b/libos/include/os/FileSystem.h
index a9085527..19899567 100644
--- a/libos/include/os/FileSystem.h
+++ b/libos/include/os/FileSystem.h
@@ -17,5 +17,7 @@ namespace os
 
         Result<String> working_directory();
         Result<String> home_directory();
+
+        Result<void> change_directory(StringView path);
     }
 }
diff --git a/libos/src/FileSystem.cpp b/libos/src/FileSystem.cpp
index 838556e9..77e3d3fe 100644
--- a/libos/src/FileSystem.cpp
+++ b/libos/src/FileSystem.cpp
@@ -66,4 +66,14 @@ namespace os::FileSystem
 
         return String::from_cstring(pw->pw_dir);
     }
+
+    Result<void> change_directory(StringView path)
+    {
+        long rc = syscall(SYS_chdir, path.chars());
+        int _ignore = TRY(Result<int>::from_syscall(rc));
+
+        ignore(_ignore);
+
+        return {};
+    }
 }