linux-kernel - Re: [PATCH v3] scripts/nsdeps: use alternative sed delimiter

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Message-ID: <20191023101520.GA5387@linux-8ccs>
Date:   Wed, 23 Oct 2019 12:15:21 +0200
From:   Jessica Yu <jeyu@...nel.org>
To:     Matthias Maennich <maennich@...gle.com>
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        David Laight <David.Laight@...lab.com>
Subject: Re: [PATCH v3] scripts/nsdeps: use alternative sed delimiter

+++ Matthias Maennich [23/10/19 11:13 +0100]:
>On Wed, Oct 23, 2019 at 10:23:39AM +0900, Masahiro Yamada wrote:
>>On Tue, Oct 22, 2019 at 8:04 PM Jessica Yu <jeyu@...nel.org> wrote:
>>>
>>>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. To avoid escaping forward
>>>slashes ${srctree}, we can use '|' as an alternative delimiter for
>>>sed instead to avoid this error.
>>>
>>>Signed-off-by: Jessica Yu <jeyu@...nel.org>
>>>---
>>>
>>>v3: don't need to escape '/' since we're using a different delimiter.
>>>
>>> scripts/nsdeps | 2 +-
>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>>diff --git a/scripts/nsdeps b/scripts/nsdeps
>>>index 3754dac13b31..dda6fbac016e 100644
>>>--- a/scripts/nsdeps
>>>+++ b/scripts/nsdeps
>>>@@ -33,7 +33,7 @@ generate_deps() {
>>>        if [ ! -f "$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
>>>
>>
>>Reviewed-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
>>
>
>Tested-by: Matthias Maennich <maennich@...gle.com>

Applied, thanks!

Jessica