From c9ad147f83f70b6add9066e16e1e44c8bc3d5c13 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 22 Jun 2015 17:26:23 +0200 Subject: [PATCH] fsck: handle multiple authors in commits specially This problem has been detected in the wild, and is the primary reason to introduce an option to demote certain fsck errors to warnings. Let's offer to ignore this particular problem specifically. Technically, we could handle such repositories by setting receive.fsck. to missingCommitter=warn, but that could hide missing tree objects in the same commit because we cannot continue verifying any commit object after encountering a missing committer line, while we can continue in the case of multiple author lines. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- fsck.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/fsck.c b/fsck.c index d3d81fcc12..8dc5867ec9 100644 --- a/fsck.c +++ b/fsck.c @@ -38,6 +38,7 @@ FUNC(MISSING_TREE, ERROR) \ FUNC(MISSING_TYPE, ERROR) \ FUNC(MISSING_TYPE_ENTRY, ERROR) \ + FUNC(MULTIPLE_AUTHORS, ERROR) \ FUNC(NUL_IN_HEADER, ERROR) \ FUNC(TAG_OBJECT_NOT_TAG, ERROR) \ FUNC(TREE_NOT_SORTED, ERROR) \ @@ -529,7 +530,7 @@ static int fsck_commit_buffer(struct commit *commit, const char *buffer, { unsigned char tree_sha1[20], sha1[20]; struct commit_graft *graft; - unsigned parent_count, parent_line_count = 0; + unsigned parent_count, parent_line_count = 0, author_count; int err; if (require_end_of_header(buffer, size, &commit->object, options)) @@ -569,9 +570,17 @@ static int fsck_commit_buffer(struct commit *commit, const char *buffer, return err; } } - if (!skip_prefix(buffer, "author ", &buffer)) - return report(options, &commit->object, FSCK_MSG_MISSING_AUTHOR, "invalid format - expected 'author' line"); - err = fsck_ident(&buffer, &commit->object, options); + author_count = 0; + while (skip_prefix(buffer, "author ", &buffer)) { + author_count++; + err = fsck_ident(&buffer, &commit->object, options); + if (err) + return err; + } + if (author_count < 1) + err = report(options, &commit->object, FSCK_MSG_MISSING_AUTHOR, "invalid format - expected 'author' line"); + else if (author_count > 1) + err = report(options, &commit->object, FSCK_MSG_MULTIPLE_AUTHORS, "invalid format - multiple 'author' lines"); if (err) return err; if (!skip_prefix(buffer, "committer ", &buffer))