Mercurial > dovecot > core-2.2
changeset 5399:9be95726e29f HEAD
When adding new keywords, update the index file atomically so the keywords
won't break if we crash in the middle of the header update.
| author | Timo Sirainen <tss@iki.fi> |
|---|---|
| date | Sat, 24 Mar 2007 23:32:06 +0200 |
| parents | 730156248978 |
| children | 37e87dbdcae6 |
| files | src/lib-index/mail-index-sync-keywords.c |
| diffstat | 1 files changed, 9 insertions(+), 0 deletions(-) [+] |
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--- a/src/lib-index/mail-index-sync-keywords.c Sat Mar 24 23:20:06 2007 +0200 +++ b/src/lib-index/mail-index-sync-keywords.c Sat Mar 24 23:32:06 2007 +0200 @@ -120,6 +120,15 @@ unsigned int keywords_count; int ret; + if (!map->write_to_disk) { + /* if we crash in the middle of writing the header, the + keywords are more or less corrupted. avoid that by + making sure the header is updated atomically. */ + map = mail_index_map_clone(map, map->hdr.record_size); + mail_index_sync_replace_map(ctx, map); + } + i_assert(MAIL_INDEX_MAP_IS_IN_MEMORY(map)); + ext_id = mail_index_map_lookup_ext(map, "keywords"); if (ext_id != (uint32_t)-1) { /* update existing header */