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    SubjectRe: [PATCH v6] checkpatch.pl: Add SPDX license tag check
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    Date
    On Fri, 2018-02-02 at 09:40 -0600, Rob Herring wrote:
    > Add SPDX license tag check based on the rules defined in
    > Documentation/process/license-rules.rst. To summarize, SPDX license tags
    > should be on the 1st line (or 2nd line in scripts) using the appropriate
    > comment style for the file type.
    >
    > Cc: Andy Whitcroft <apw@canonical.com>
    > Cc: Joe Perches <joe@perches.com>
    > Cc: Thomas Gleixner <tglx@linutronix.de>
    > Cc: Philippe Ombredanne <pombredanne@nexb.com>
    > Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    > Signed-off-by: Rob Herring <robh@kernel.org>

    Signed-off-by: Joe Perches <joe@perches.com>

    > ---
    > v6:
    > - Dropped script extension check and only look for #!/... on 1st line. A
    > text executable file was not reliable either.
    > - Support .awk and .tc which may or may not have a #!/.
    > - Fixed a typo in script "#!" regex and also match on first /.
    > - Add Greg's ack.
    >
    > scripts/checkpatch.pl | 27 +++++++++++++++++++++++++++
    > 1 file changed, 27 insertions(+)
    >
    > diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
    > index ba03f17ff662..6db245e5f93b 100755
    > --- a/scripts/checkpatch.pl
    > +++ b/scripts/checkpatch.pl
    > @@ -2225,6 +2225,8 @@ sub process {
    >
    > my $camelcase_file_seeded = 0;
    >
    > + my $checklicenseline = 1;
    > +
    > sanitise_line_reset();
    > my $line;
    > foreach my $rawline (@rawlines) {
    > @@ -2416,6 +2418,7 @@ sub process {
    > } else {
    > $check = $check_orig;
    > }
    > + $checklicenseline = 1;
    > next;
    > }
    >
    > @@ -2866,6 +2869,30 @@ sub process {
    > }
    > }
    >
    > +# check for using SPDX license tag at beginning of files
    > + if ($realline == $checklicenseline) {
    > + if ($rawline =~ /^[ \+]\s*\#\!\s*\//) {
    > + $checklicenseline = 2;
    > + } elsif ($rawline =~ /^\+/) {
    > + my $comment = "";
    > + if ($realfile =~ /\.(h|s|S)$/) {
    > + $comment = '/*';
    > + } elsif ($realfile =~ /\.(c|dts|dtsi)$/) {
    > + $comment = '//';
    > + } elsif (($checklicenseline == 2) || $realfile =~ /\.(sh|pl|py|awk|tc)$/) {
    > + $comment = '#';
    > + } elsif ($realfile =~ /\.rst$/) {
    > + $comment = '..';
    > + }
    > +
    > + if ($comment !~ /^$/ &&
    > + $rawline !~ /^\+\Q$comment\E SPDX-License-Identifier: /) {
    > + WARN("SPDX_LICENSE_TAG",
    > + "Missing or malformed SPDX-License-Identifier tag in line $checklicenseline\n" . $herecurr);
    > + }
    > + }
    > + }
    > +
    > # check we are in a valid source file if not then ignore this hunk
    > next if ($realfile !~ /\.(h|c|s|S|sh|dtsi|dts)$/);
    >

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