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From:   Jessica Yu <jeyu@kernel.org>
To:     linux-kernel@vger.kernel.org
Cc:     Matthias Maennich <maennich@google.com>,
        Masahiro Yamada <yamada.masahiro@socionext.com>,
        Jessica Yu <jeyu@kernel.org>
Subject: [PATCH] scripts/nsdeps: escape '/' for module source files
Date:   Mon, 21 Oct 2019 16:51:37 +0200
Message-Id: <20191021145137.31672-1-jeyu@kernel.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

When doing an out of tree build with O=, the nsdeps script constructs
the absolute pathname of the module source file so that it can insert
MODULE_IMPORT_NS statements in the right place. However, ${srctree}
contains an unescaped path to the source tree, which, when used in a sed
substitution, makes sed complain:

++ sed 's/[^ ]* *//home/jeyu/jeyu-linux\/&/g'
sed: -e expression #1, char 12: unknown option to `s'

The sed substitution command 's' ends prematurely with the forward
slashes in the pathname, and sed errors out when it encounters the 'h',
which is an invalid sed substitution option. So use bash in-variable
substitution to escape all forward slashes for sed.

Signed-off-by: Jessica Yu <jeyu@kernel.org>
---
 scripts/nsdeps | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/nsdeps b/scripts/nsdeps
index 3754dac13b31..79f96e596a0b 100644
--- a/scripts/nsdeps
+++ b/scripts/nsdeps
@@ -33,7 +33,7 @@ generate_deps() {
 	if [ ! -f "$ns_deps_file" ]; then return; fi
 	local mod_source_files=`cat $mod_file | sed -n 1p                      \
 					      | sed -e 's/\.o/\.c/g'           \
-					      | sed "s/[^ ]* */${srctree}\/&/g"`
+					      | sed "s/[^ ]* */${srctree//\//\\\/}\/&/g"`
 	for ns in `cat $ns_deps_file`; do
 		echo "Adding namespace $ns to module $mod_name (if needed)."
 		generate_deps_for_ns $ns $mod_source_files
-- 
2.16.4