mdbox-sync.c revision 461ffead9720d1e516b959d5e41f049c73d38c7c
5f5870385cff47efd2f58e7892f251cf13761528Timo Sirainen/* Copyright (c) 2007-2012 Dovecot authors, see the included COPYING file */
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
c977374bd4651cafc1626ebe308aa66dfd8b30e0Timo Sirainen/*
c977374bd4651cafc1626ebe308aa66dfd8b30e0Timo Sirainen Expunging works like:
c977374bd4651cafc1626ebe308aa66dfd8b30e0Timo Sirainen
c977374bd4651cafc1626ebe308aa66dfd8b30e0Timo Sirainen 1. Lock map index by beginning a map sync.
65b94e73c305dcb209cf958f938b93ec061c67a9Timo Sirainen 2. Write map UID refcount changes to map index (=> tail != head).
c977374bd4651cafc1626ebe308aa66dfd8b30e0Timo Sirainen 3. Expunge messages from mailbox index.
65b94e73c305dcb209cf958f938b93ec061c67a9Timo Sirainen 4. Finish map sync, which updates tail=head and unlocks map index.
c977374bd4651cafc1626ebe308aa66dfd8b30e0Timo Sirainen
65b94e73c305dcb209cf958f938b93ec061c67a9Timo Sirainen If something crashes after 2 but before 4 is finished, tail != head and
c977374bd4651cafc1626ebe308aa66dfd8b30e0Timo Sirainen reader can do a full resync to figure out what got broken.
c977374bd4651cafc1626ebe308aa66dfd8b30e0Timo Sirainen*/
c977374bd4651cafc1626ebe308aa66dfd8b30e0Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen#include "lib.h"
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen#include "array.h"
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen#include "ioloop.h"
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen#include "str.h"
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen#include "mdbox-storage.h"
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen#include "mdbox-storage-rebuild.h"
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen#include "mdbox-map.h"
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen#include "mdbox-file.h"
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen#include "mdbox-sync.h"
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
9955f6cba7652469b1d600a3674e8d27dd4e61bdTimo Sirainen#include <stdlib.h>
9955f6cba7652469b1d600a3674e8d27dd4e61bdTimo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainenstatic int
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainendbox_sync_verify_expunge_guid(struct mdbox_sync_context *ctx, uint32_t seq,
de62ce819d59a529530da4b57be1b8d6dad13d6bTimo Sirainen const guid_128_t guid_128)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen{
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen const void *data;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen uint32_t uid;
a10ed8c47534b4c6b6bf2711ccfe577e720a47b4Timo Sirainen bool expunged;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen mail_index_lookup_uid(ctx->sync_view, seq, &uid);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen mail_index_lookup_ext(ctx->sync_view, seq,
a10ed8c47534b4c6b6bf2711ccfe577e720a47b4Timo Sirainen ctx->mbox->guid_ext_id, &data, &expunged);
de62ce819d59a529530da4b57be1b8d6dad13d6bTimo Sirainen if (guid_128_is_empty(guid_128) ||
de62ce819d59a529530da4b57be1b8d6dad13d6bTimo Sirainen memcmp(data, guid_128, GUID_128_SIZE) == 0)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen mail_storage_set_critical(&ctx->mbox->storage->storage.storage,
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen "Mailbox %s: Expunged GUID mismatch for UID %u: %s vs %s",
d22301419109ed4a38351715e6760011421dadecTimo Sirainen ctx->mbox->box.vname, uid,
de62ce819d59a529530da4b57be1b8d6dad13d6bTimo Sirainen guid_128_to_string(data), guid_128_to_string(guid_128));
5b62dea2f88165f3f4d87bba9011343f3ff415ffTimo Sirainen mdbox_storage_set_corrupted(ctx->mbox->storage);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return -1;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen}
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainenstatic int mdbox_sync_expunge(struct mdbox_sync_context *ctx, uint32_t seq,
de62ce819d59a529530da4b57be1b8d6dad13d6bTimo Sirainen const guid_128_t guid_128)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen{
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen uint32_t map_uid;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
461ffead9720d1e516b959d5e41f049c73d38c7cTimo Sirainen if (seq_range_array_add(&ctx->expunged_seqs, seq)) {
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen /* already marked as expunged in this sync */
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (dbox_sync_verify_expunge_guid(ctx, seq, guid_128) < 0)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return -1;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (mdbox_mail_lookup(ctx->mbox, ctx->sync_view, seq, &map_uid) < 0)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return -1;
c18ff860dc22960fd37c272d929f889c7939a2c8Timo Sirainen if (mdbox_map_update_refcount(ctx->map_trans, map_uid, -1) < 0)
73a87c2ff65c6116cde6fb158dfddb8ef7346901Timo Sirainen return -1;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen}
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
73a87c2ff65c6116cde6fb158dfddb8ef7346901Timo Sirainenstatic int mdbox_sync_rec(struct mdbox_sync_context *ctx,
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen const struct mail_index_sync_rec *sync_rec)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen{
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen uint32_t seq, seq1, seq2;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (sync_rec->type != MAIL_INDEX_SYNC_TYPE_EXPUNGE) {
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen /* not interested */
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (!mail_index_lookup_seq_range(ctx->sync_view,
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen sync_rec->uid1, sync_rec->uid2,
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen &seq1, &seq2)) {
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen /* already expunged everything. nothing to do. */
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen for (seq = seq1; seq <= seq2; seq++) {
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (mdbox_sync_expunge(ctx, seq, sync_rec->guid_128) < 0)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return -1;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen}
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainenstatic int dbox_sync_mark_expunges(struct mdbox_sync_context *ctx)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen{
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen enum mail_index_transaction_flags flags =
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen MAIL_INDEX_TRANSACTION_FLAG_EXTERNAL;
d22301419109ed4a38351715e6760011421dadecTimo Sirainen struct mailbox *box = &ctx->mbox->box;
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen struct mail_index_transaction *trans;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen struct seq_range_iter iter;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen unsigned int n;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen const void *data;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen uint32_t seq, uid;
a10ed8c47534b4c6b6bf2711ccfe577e720a47b4Timo Sirainen bool expunged;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen /* use a separate transaction here so that we can commit the changes
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen during map transaction */
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen trans = mail_index_transaction_begin(ctx->sync_view, flags);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen seq_range_array_iter_init(&iter, &ctx->expunged_seqs); n = 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen while (seq_range_array_iter_nth(&iter, n++, &seq)) {
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen mail_index_lookup_uid(ctx->sync_view, seq, &uid);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen mail_index_lookup_ext(ctx->sync_view, seq,
a10ed8c47534b4c6b6bf2711ccfe577e720a47b4Timo Sirainen ctx->mbox->guid_ext_id, &data, &expunged);
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen mail_index_expunge_guid(trans, seq, data);
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen }
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen if (mail_index_transaction_commit(&trans) < 0)
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen return -1;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen if (box->v.sync_notify != NULL) {
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen /* do notifications after commit finished successfully */
6ae329de09afb7214c906d762320847e05469d53Timo Sirainen box->tmp_sync_view = ctx->sync_view;
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen seq_range_array_iter_init(&iter, &ctx->expunged_seqs); n = 0;
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen while (seq_range_array_iter_nth(&iter, n++, &seq)) {
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen mail_index_lookup_uid(ctx->sync_view, seq, &uid);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen box->v.sync_notify(box, uid, MAILBOX_SYNC_TYPE_EXPUNGE);
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen }
6ae329de09afb7214c906d762320847e05469d53Timo Sirainen box->tmp_sync_view = NULL;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
637455ebee0453f860c9bce0626c485e35fb83deTimo Sirainen return 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen}
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainenstatic int mdbox_sync_index(struct mdbox_sync_context *ctx)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen{
d22301419109ed4a38351715e6760011421dadecTimo Sirainen struct mailbox *box = &ctx->mbox->box;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen const struct mail_index_header *hdr;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen struct mail_index_sync_rec sync_rec;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen uint32_t seq1, seq2;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen int ret = 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen hdr = mail_index_get_header(ctx->sync_view);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (hdr->uid_validity == 0) {
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen /* newly created index file */
e790c9b1fc56bca7ebd59dc289cb5035e3afcee5Timo Sirainen mail_storage_set_critical(box->storage,
e790c9b1fc56bca7ebd59dc289cb5035e3afcee5Timo Sirainen "Mailbox %s: Corrupted index, uidvalidity=0",
e790c9b1fc56bca7ebd59dc289cb5035e3afcee5Timo Sirainen box->vname);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen /* mark the newly seen messages as recent */
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (mail_index_lookup_seq_range(ctx->sync_view, hdr->first_recent_uid,
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen hdr->next_uid, &seq1, &seq2)) {
d22301419109ed4a38351715e6760011421dadecTimo Sirainen index_mailbox_set_recent_seq(&ctx->mbox->box, ctx->sync_view,
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen seq1, seq2);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
65b94e73c305dcb209cf958f938b93ec061c67a9Timo Sirainen /* handle syncing records without map being locked. */
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (mdbox_map_atomic_is_locked(ctx->atomic)) {
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen ctx->map_trans = mdbox_map_transaction_begin(ctx->atomic, FALSE);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen i_array_init(&ctx->expunged_seqs, 64);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen while (mail_index_sync_next(ctx->index_sync_ctx, &sync_rec)) {
73a87c2ff65c6116cde6fb158dfddb8ef7346901Timo Sirainen if ((ret = mdbox_sync_rec(ctx, &sync_rec)) < 0)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen break;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
73a87c2ff65c6116cde6fb158dfddb8ef7346901Timo Sirainen
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen /* write refcount changes to map index. transaction commit updates the
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen log head, while tail is left behind. */
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (mdbox_map_atomic_is_locked(ctx->atomic)) {
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (ret == 0)
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen ret = mdbox_map_transaction_commit(ctx->map_trans);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen /* write changes to mailbox index */
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (ret == 0)
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen ret = dbox_sync_mark_expunges(ctx);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen /* finish the map changes and unlock the map. this also updates
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen map's tail -> head. */
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (ret < 0)
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen mdbox_map_atomic_set_failed(ctx->atomic);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen mdbox_map_transaction_free(&ctx->map_trans);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen array_free(&ctx->expunged_seqs);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (box->v.sync_notify != NULL)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen box->v.sync_notify(box, 0, 0);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return ret == 0 ? 1 :
5b62dea2f88165f3f4d87bba9011343f3ff415ffTimo Sirainen (ctx->mbox->storage->corrupted ? 0 : -1);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen}
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainenstatic int mdbox_sync_try_begin(struct mdbox_sync_context *ctx,
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen enum mail_index_sync_flags sync_flags)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen{
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen struct mdbox_mailbox *mbox = ctx->mbox;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen int ret;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen ret = mail_index_sync_begin(mbox->box.index, &ctx->index_sync_ctx,
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen &ctx->sync_view, &ctx->trans, sync_flags);
d0b2bd9e2246eb68ed952c7f2e13d1969d657c8fTimo Sirainen if (mail_index_reset_fscked(mbox->box.index))
d0b2bd9e2246eb68ed952c7f2e13d1969d657c8fTimo Sirainen mdbox_storage_set_corrupted(mbox->storage);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (ret < 0) {
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen mail_storage_set_index_error(&mbox->box);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen return -1;
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (ret == 0) {
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen /* nothing to do */
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen return 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (!mdbox_map_atomic_is_locked(ctx->atomic) &&
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen mail_index_sync_has_expunges(ctx->index_sync_ctx)) {
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen /* we have expunges, so we need to write to map.
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen it needs to be locked before mailbox index. */
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen mail_index_sync_rollback(&ctx->index_sync_ctx);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (mdbox_map_atomic_lock(ctx->atomic) < 0)
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen return -1;
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen return mdbox_sync_try_begin(ctx, sync_flags);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen }
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen return 1;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen}
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainenint mdbox_sync_begin(struct mdbox_mailbox *mbox, enum mdbox_sync_flags flags,
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen struct mdbox_map_atomic_context *atomic,
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen struct mdbox_sync_context **ctx_r)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen{
d22301419109ed4a38351715e6760011421dadecTimo Sirainen struct mail_storage *storage = mbox->box.storage;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen struct mdbox_sync_context *ctx;
3f91e60401495a4046c73992fabaa5e77200a451Timo Sirainen enum mail_index_sync_flags sync_flags;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen int ret;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen bool rebuild, storage_rebuilt = FALSE;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen *ctx_r = NULL;
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen
dd4f30895ebbddd77e000472fbadcb3128ae2883Timo Sirainen /* avoid race conditions with mailbox creation, don't check for dbox
dd4f30895ebbddd77e000472fbadcb3128ae2883Timo Sirainen headers until syncing has locked the mailbox */
dd4f30895ebbddd77e000472fbadcb3128ae2883Timo Sirainen rebuild = mbox->storage->corrupted ||
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen (flags & MDBOX_SYNC_FLAG_FORCE_REBUILD) != 0;
f71c2d4e6b802bf8e622bcd5df29286262d05d5aTimo Sirainen if (rebuild && (flags & MDBOX_SYNC_FLAG_NO_REBUILD) == 0) {
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (mdbox_storage_rebuild_in_context(mbox->storage, atomic) < 0)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return -1;
d22301419109ed4a38351715e6760011421dadecTimo Sirainen index_mailbox_reset_uidvalidity(&mbox->box);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen storage_rebuilt = TRUE;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen ctx = i_new(struct mdbox_sync_context, 1);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen ctx->mbox = mbox;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen ctx->flags = flags;
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen ctx->atomic = atomic;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
3f91e60401495a4046c73992fabaa5e77200a451Timo Sirainen sync_flags = index_storage_get_sync_flags(&mbox->box);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (!rebuild && (flags & MDBOX_SYNC_FLAG_FORCE) == 0)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen sync_flags |= MAIL_INDEX_SYNC_FLAG_REQUIRE_CHANGES;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if ((flags & MDBOX_SYNC_FLAG_FSYNC) != 0)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen sync_flags |= MAIL_INDEX_SYNC_FLAG_FSYNC;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen /* don't write unnecessary dirty flag updates */
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen sync_flags |= MAIL_INDEX_SYNC_FLAG_AVOID_FLAG_UPDATES;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen ret = mdbox_sync_try_begin(ctx, sync_flags);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (ret <= 0) {
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen /* failed / nothing to do */
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen i_free(ctx);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen return ret;
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if ((ret = mdbox_sync_index(ctx)) <= 0) {
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen mail_index_sync_rollback(&ctx->index_sync_ctx);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen i_free_and_null(ctx);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (ret < 0)
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen return -1;
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen /* corrupted */
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (storage_rebuilt) {
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen mail_storage_set_critical(storage,
ddb018bc886680f462463b2c87f983fdedbf6cf0Timo Sirainen "mdbox %s: Storage keeps breaking",
ca98892a6b8a30ffc1fe26fcf02c7d59e3204e7eTimo Sirainen mailbox_get_path(&mbox->box));
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return -1;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen /* we'll need to rebuild storage.
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen try again from the beginning. */
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen mdbox_storage_set_corrupted(mbox->storage);
37ee89f3cba22cd975912a882f0d3097fa5031e1Timo Sirainen if ((flags & MDBOX_SYNC_FLAG_NO_REBUILD) != 0) {
37ee89f3cba22cd975912a882f0d3097fa5031e1Timo Sirainen mail_storage_set_critical(storage,
37ee89f3cba22cd975912a882f0d3097fa5031e1Timo Sirainen "mdbox %s: Can't rebuild storage",
37ee89f3cba22cd975912a882f0d3097fa5031e1Timo Sirainen mailbox_get_path(&mbox->box));
37ee89f3cba22cd975912a882f0d3097fa5031e1Timo Sirainen return -1;
37ee89f3cba22cd975912a882f0d3097fa5031e1Timo Sirainen }
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen return mdbox_sync_begin(mbox, flags, atomic, ctx_r);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen *ctx_r = ctx;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen}
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainenint mdbox_sync_finish(struct mdbox_sync_context **_ctx, bool success)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen{
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen struct mdbox_sync_context *ctx = *_ctx;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen int ret = success ? 0 : -1;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen *_ctx = NULL;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (success) {
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (mail_index_sync_commit(&ctx->index_sync_ctx) < 0) {
d22301419109ed4a38351715e6760011421dadecTimo Sirainen mail_storage_set_index_error(&ctx->mbox->box);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen ret = -1;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen } else {
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen mail_index_sync_rollback(&ctx->index_sync_ctx);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen i_free(ctx);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return ret;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen}
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainenint mdbox_sync(struct mdbox_mailbox *mbox, enum mdbox_sync_flags flags)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen{
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen struct mdbox_sync_context *sync_ctx;
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen struct mdbox_map_atomic_context *atomic;
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen int ret;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen atomic = mdbox_map_atomic_begin(mbox->storage->map);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen ret = mdbox_sync_begin(mbox, flags, atomic, &sync_ctx);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (ret == 0 && sync_ctx != NULL)
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen ret = mdbox_sync_finish(&sync_ctx, TRUE);
4fded1eec06aba9ce37887ac30619768760cd0d0Timo Sirainen if (ret == 0)
4fded1eec06aba9ce37887ac30619768760cd0d0Timo Sirainen mdbox_map_atomic_set_success(atomic);
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen if (mdbox_map_atomic_finish(&atomic) < 0)
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen ret = -1;
08a8b3de61139ba02371afc8240ac85be0e8b17cTimo Sirainen return ret;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen}
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainenstruct mailbox_sync_context *
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainenmdbox_storage_sync_init(struct mailbox *box, enum mailbox_sync_flags flags)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen{
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen struct mdbox_mailbox *mbox = (struct mdbox_mailbox *)box;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen enum mdbox_sync_flags mdbox_sync_flags = 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen int ret = 0;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (!box->opened) {
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if (mailbox_open(box) < 0)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen ret = -1;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
f71c2d4e6b802bf8e622bcd5df29286262d05d5aTimo Sirainen if (box->opened) {
f71c2d4e6b802bf8e622bcd5df29286262d05d5aTimo Sirainen if (mail_index_reset_fscked(box->index))
f71c2d4e6b802bf8e622bcd5df29286262d05d5aTimo Sirainen mdbox_storage_set_corrupted(mbox->storage);
f71c2d4e6b802bf8e622bcd5df29286262d05d5aTimo Sirainen }
d22301419109ed4a38351715e6760011421dadecTimo Sirainen if (ret == 0 && (index_mailbox_want_full_sync(&mbox->box, flags) ||
5b62dea2f88165f3f4d87bba9011343f3ff415ffTimo Sirainen mbox->storage->corrupted)) {
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen if ((flags & MAILBOX_SYNC_FLAG_FORCE_RESYNC) != 0)
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen mdbox_sync_flags |= MDBOX_SYNC_FLAG_FORCE_REBUILD;
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen ret = mdbox_sync(mbox, mdbox_sync_flags);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen }
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen return index_mailbox_sync_init(box, flags, ret < 0);
1ac7c8e9040e0d0b7e9f849e45b94bfe919595a9Timo Sirainen}