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authorAllen Hubbe <allenbh@gmail.com>2016-08-02 14:04:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-08-02 19:35:13 -0400
commited43c4e58a6d3061e3329c41d7b880f11541245a (patch)
treee503be5f906aafc3de80b12af032df659274cf67 /scripts
parentc844711575086231890084390a275d06f11a623a (diff)
checkpatch: check signoff when reading stdin
Signoff was not checked if the filename is '-', indicating reading the patch from stdin. Commands such as the below would not warn about a missing signoff, because the patch filename is '-'. This change allows checkpatch to warn about a missing signoff, even if the input filename is '-', but only if the patch has a commit message. git show --pretty=email | scripts/checkpatch.pl - A more common use of checkpatch with stdin is for piping git diff through checkpatch. The diff output would not contain a commit message, and therefore it would not contain a signoff line. For this common use case, a warning should not be printed about the missing signoff. With this change we will only warn about a missing signoff if the input contains a commit message. git diff | scripts/checkpatch.pl - Before this patch, a workaround for the first command was to refer to stdin by a name other than '-'. The workaround is not an elegant solution, because elsewhere checkpatch uses the fact that filename equals '-', such as in setting '$vname' to 'Your patch' for stdin. The command below would report "/dev/stdin has style problems" instead of "Your patch has style problems." git show --pretty=email | scripts/checkpatch.pl /dev/stdin Link: http://lkml.kernel.org/r/48be31e414bddc65bccfa6b1322359be9ba032eb.1469670589.git.allenbh@gmail.com Signed-off-by: Allen Hubbe <allenbh@gmail.com> Acked-by: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/checkpatch.pl4
1 files changed, 3 insertions, 1 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 1d5b09dd577a..6f2ce0cafe6f 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2069,6 +2069,7 @@ sub process {
my $is_patch = 0;
my $in_header_lines = $file ? 0 : 1;
my $in_commit_log = 0; #Scanning lines before patch
+ my $has_commit_log = 0; #Encountered lines before patch
my $commit_log_possible_stack_dump = 0;
my $commit_log_long_line = 0;
my $commit_log_has_diff = 0;
@@ -2566,6 +2567,7 @@ sub process {
$rawline =~ /^(commit\b|from\b|[\w-]+:).*$/i)) {
$in_header_lines = 0;
$in_commit_log = 1;
+ $has_commit_log = 1;
}
# Check if there is UTF-8 in a commit log when a mail header has explicitly
@@ -6055,7 +6057,7 @@ sub process {
ERROR("NOT_UNIFIED_DIFF",
"Does not appear to be a unified-diff format patch\n");
}
- if ($is_patch && $filename ne '-' && $chk_signoff && $signoff == 0) {
+ if ($is_patch && $has_commit_log && $chk_signoff && $signoff == 0) {
ERROR("MISSING_SIGN_OFF",
"Missing Signed-off-by: line(s)\n");
}