ash: let $HOME set home directory of login shell

In busybox-w32 the shell option '-l' sets HOME to the user's
home directory, as determined by a call to GetUserProfileDirectory().
This is differs from how shells work on Unix, where HOME is usually
set by login(1).

Allow the user to override this behaviour by setting HOME before
starting the shell.  If HOME isn't set or contains an empty string
the previous behaviour applies.  If HOME is set to a non-empty string
the user should ensure that it represents a valid absolute path.

(GitHub issue #244)

1 files changed, 4 insertions, 1 deletions

diff --git a/shell/ash.c b/shell/ash.c
index d8f9dba34..e8a1e853c 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -15764,7 +15764,10 @@ int ash_main(int argc UNUSED_PARAM, char **argv)
 
 #if ENABLE_PLATFORM_MINGW32
                 if (!dirarg) {
-                        chdir(xgetpwuid(getuid())->pw_dir);
+                        hp = lookupvar("HOME");
+                        if (hp == NULL || *hp == '\0')
+                                hp = xgetpwuid(getuid())->pw_dir;
+                        chdir(hp);
                         setpwd(NULL, 0);
                 }
 #endif