ash: don't convert path delimiters for certain environment variables

The SYSTEMROOT and COMSPEC environment variables are known to
cause problems for Windows applications if they contain forward
slashes rather than backslashes.  So don't convert them, even
if the -X flag isn't present.

1 files changed, 6 insertions, 0 deletions

diff --git a/shell/ash.c b/shell/ash.c
index ef3f7933a..349e9deb8 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -13475,6 +13475,12 @@ init(void)
                                 for (start = *envp;start < end;start++)
                                         *start = toupper(*start);
 
+                                /* skip conversion of variables known to cause problems */
+                                if ( strncmp(*envp, "SYSTEMROOT=", 11) == 0 ||
+                                                strncmp(*envp, "COMSPEC=", 8) == 0 ) {
+                                        continue;
+                                }
+
                                 /* convert backslashes to forward slashes */
                                 if (!xp) {
                                         for ( ++end; *end; ++end ) {