[PATCH 4.4 18/73] kbuild: forbid kernel directory to contain spaces and colons

Greg Kroah-Hartman
2016-09-28T09:36:36Z

From: Robert Jarzmik <robert.jarzmik@free.fr>

commit 51193b76bfff5027cf96ba63effae808ad67cca7 upstream.

When the kernel path contains a space or a colon somewhere in the path
name, the modules_install target doesn't work anymore, as the path names
are not enclosed in double quotes. It is also supposed that and O= build
will suffer from the same weakness as modules_install.

Instead of checking and improving kbuild to resist to directories
including these characters, error out early to prevent any build if the
kernel's main directory contains a space.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Michal Marek <mmarek@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
Makefile | 4 ++++
1 file changed, 4 insertions(+)

--- a/Makefile
+++ b/Makefile
@@ -128,6 +128,10 @@ _all:
# Cancel implicit rules on top Makefile
$(CURDIR)/Makefile Makefile: ;

+ifneq ($(words $(subst :, ,$(CURDIR))), 1)
+ $(error main directory cannot contain spaces nor colons)
+endif
+
ifneq ($(KBUILD_OUTPUT),)
# Invoke a second make in the output directory, passing relevant variables
# check that the output directory actually exists