From 96d4b701e626c735cea447b5b0664d1b420a00fb Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Thu, 25 Apr 2019 23:09:21 +0200
Subject: [PATCH] sh: Make "cd" jump to the home directory. And also let's set
 $HOME.

Nobody else is setting $HOME right now, so we might as well do it here.
This should eventually be done by some sort of "login" program.
---
 Userland/sh.cpp | 24 ++++++++++++++----------
 1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/Userland/sh.cpp b/Userland/sh.cpp
index cd00a8dd06..6813e97b83 100644
--- a/Userland/sh.cpp
+++ b/Userland/sh.cpp
@@ -18,6 +18,7 @@
 struct GlobalState {
     String cwd;
     String username;
+    String home;
     char ttyname[32];
     char hostname[32];
     pid_t sid;
@@ -66,16 +67,16 @@ static int sh_exit(int, char**)
 
 static int sh_cd(int argc, char** argv)
 {
-    if (argc == 1) {
-        printf("usage: cd <path>\n");
-        return 0;
-    }
+    char pathbuf[PATH_MAX];
 
-    char pathbuf[128];
-    if (argv[1][0] == '/')
-        memcpy(pathbuf, argv[1], strlen(argv[1]) + 1);
-    else
-        sprintf(pathbuf, "%s/%s", g->cwd.characters(), argv[1]);
+    if (argc == 1) {
+        strcpy(pathbuf, g->home.characters());
+    } else {
+        if (argv[1][0] == '/')
+            memcpy(pathbuf, argv[1], strlen(argv[1]) + 1);
+        else
+            sprintf(pathbuf, "%s/%s", g->cwd.characters(), argv[1]);
+    }
 
     FileSystemPath canonical_path(pathbuf);
     if (!canonical_path.is_valid()) {
@@ -520,8 +521,11 @@ int main(int argc, char** argv)
 
     {
         auto* pw = getpwuid(getuid());
-        if (pw)
+        if (pw) {
             g->username = pw->pw_name;
+            g->home = pw->pw_dir;
+            putenv(const_cast<char*>(String::format("HOME=%s", pw->pw_dir).characters()));
+        }
         endpwent();
     }