Hi Jim
2017-10-28 8:56 GMT+09:00 Jim Davis <jim.epost@xxxxxxxxx>:
> On Wed, Oct 25, 2017 at 9:55 PM, Masahiro Yamada
> <yamada.masahiro@xxxxxxxxxxxxx> wrote:
>> If you run coccicheck with V=1 and COCCI=, you will see a strange
>> path to the semantic patch file. For example, run the following:
>>
>> $ make V=1 COCCI=scripts/coccinelle/free/kfree.cocci coccicheck
>> [ snip ]
>> The semantic patch that makes this report is available
>> in scriptcoccinelle/free/kfree.cocci.
>>
>> Notice "s/" was dropped from "scripts/coccinelle/free/kfree.cocci".
>>
>> When running coccicheck without O=, $srctree is expanded to ".", which
>> represents one arbitrary character in the regular expression. Using
>> sed is not a good choice here. Strip $srctree/ simply without sed.
>>
>> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
>> ---
>>
>> scripts/coccicheck | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/scripts/coccicheck b/scripts/coccicheck
>> index 1bfa2d2..9d18662 100755
>> --- a/scripts/coccicheck
>> +++ b/scripts/coccicheck
>> @@ -186,7 +186,7 @@ coccinelle () {
>>
>> if [ $VERBOSE -ne 0 -a $ONLINE -eq 0 ] ; then
>>
>> - FILE=`echo $COCCI | sed "s|$srctree/||"`
>> + FILE=${COCCI#$srctree/}
>
> [jim@krebstar linux-rc]$ make CONFIG_SHELL=dash V=1
> COCCI=scripts/coccinelle/free/kfree.cocci coccicheck
> dash ./scripts/coccicheck
> ./scripts/coccicheck: 63: ./scripts/coccicheck: Bad substitution
> make: *** [Makefile:1585: coccicheck] Error 2
>
> --
> Jim
Did you review/test this patch?
or point out something about existing code?
The error message points to line 63:
COCCIINCLUDE=${LINUXINCLUDE//-I/-I }
My code
FILE=${COCCI#$srctree/}
works on dash.
I believe your post does not block my patch.
Actually, scripts/coccicheck contains three lines
that depend on bash.
line 63: COCCIINCLUDE=${LINUXINCLUDE//-I/-I }
line 64: COCCIINCLUDE=${COCCIINCLUDE// -include/ --include}
line 134: if [[ $? -ne 0 ]]; then
They are legitimate because I see the correct shebang #!/bin/bash
on the top of this script.
CONFIG_SHELL is not described in Documentation/kbuild/kbuild.txt
so Kbuild does not expect CONFIG_SHELL overridden from the command line.
(at least for now).
Some sell scripts in kernel tree are specified with "#!/bin/sh"
and others with "#!/bin/bash"
Both of the cases are invoked with CONFIG_SHELL in Kbuild,
so several scripts give error with CONFIG_SHELL=dash.
For example,
masahiro@grover:~/ref/linux$ make CONFIG_SHELL=dash tags
GEN tags
./scripts/tags.sh: 159: ./scripts/tags.sh: Syntax error: "(" unexpected
make: *** [tags] Error 2
Of course, it will be possible to improve this situation if we like,
but should be discussed in a new thread since this is
about Kbuild infrastructure, not a coccinelle-related topic.
--
Best Regards
Masahiro Yamada
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