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From 85244305392c76334d60296b2e06050935f11986 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Kuzn=C3=ADk?= <ondra@mistotebe.net>
Date: Thu, 1 Apr 2021 15:17:14 +0100
Subject: [PATCH] ITS#9295 Handle add+delete on a single-value attr
---
servers/slapd/syncrepl.c | 17 +++++++++++++----
2 files changed, 24 insertions(+), 4 deletions(-)
diff --git a/servers/slapd/syncrepl.c b/servers/slapd/syncrepl.c
index 457c6cb87..4a64b330d 100644
--- a/servers/slapd/syncrepl.c
+++ b/servers/slapd/syncrepl.c
@@ -2296,9 +2296,16 @@ syncrepl_accesslog_mods(
mod->sml_nvalues = NULL;
mod->sml_numvals = 0;
- /* Keep 'op' to reflect what we read out from accesslog */
- if ( op == LDAP_MOD_ADD && is_at_single_value( ad->ad_type ))
- mod->sml_op = LDAP_MOD_REPLACE;
+ if ( is_at_single_value( ad->ad_type ) ) {
+ if ( op == LDAP_MOD_ADD ) {
+ /* ITS#9295 an ADD might conflict with an existing value */
+ mod->sml_op = LDAP_MOD_REPLACE;
+ } else if ( op == LDAP_MOD_DELETE ) {
+ /* ITS#9295 the above REPLACE could invalidate subsequent
+ * DELETEs */
+ mod->sml_op = SLAP_MOD_SOFTDEL;
+ }
+ }
*modtail = mod;
modtail = &mod->sml_next;
@@ -2556,6 +2563,7 @@ syncrepl_resolve_cb( Operation *op, SlapReply *rs )
continue;
}
if ( m2->sml_op == LDAP_MOD_DELETE ||
+ m2->sml_op == SLAP_MOD_SOFTDEL ||
m2->sml_op == LDAP_MOD_REPLACE ) {
int numvals = m2->sml_numvals;
if ( m2->sml_op == LDAP_MOD_REPLACE )
@@ -2567,7 +2575,8 @@ drop:
op->o_tmpfree( m1, op->o_tmpmemctx );
continue;
}
- if ( m1->sml_op == LDAP_MOD_DELETE ) {
+ if ( m1->sml_op == LDAP_MOD_DELETE ||
+ m1->sml_op == SLAP_MOD_SOFTDEL ) {
if ( m1->sml_numvals == 0 ) {
/* turn this to SOFTDEL later */
m1->sml_flags = SLAP_MOD_INTERNAL;