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ITS#6716 Keep CSN lists sorted by SID

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This commit is contained in:
Howard Chu 2011-06-21 20:44:53 -07:00
parent ceefe132a8
commit 249422aa28
2 changed files with 66 additions and 0 deletions
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64
servers/slapd/ldapsync.c
View File

@ -166,6 +166,68 @@ slap_parse_csn_sids( BerVarray csns, int numcsns, void *memctx )
return ret;
}
static slap_mr_match_func sidsort_cmp;
static const MatchingRule sidsort_mr = {
{},
NULL,
{},
{},
0,
NULL, NULL, NULL, sidsort_cmp
};
static const AttributeType sidsort_at = {
{},
{},
NULL, NULL, (MatchingRule *)&sidsort_mr,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, SLAP_AT_SORTED_VAL
};
static const AttributeDescription sidsort_ad = {
NULL,
(AttributeType *)&sidsort_at
};
static int
sidsort_cmp(
int *matchp,
slap_mask_t flags,
Syntax *syntax,
MatchingRule *mr,
struct berval *b1,
void *v2 )
{
struct berval *b2 = v2;
*matchp = b1->bv_len - b2->bv_len;
return LDAP_SUCCESS;
}
/* sort CSNs by SID. Use a fake Attribute with our own
* syntax and matching rule, which sorts the nvals by
* bv_len order. Stuff our sids into the bv_len.
*/
int
slap_sort_csn_sids( BerVarray csns, int *sids, int numcsns, void *memctx )
{
Attribute a;
const char *text;
int i, rc;
a.a_desc = (AttributeDescription *)&sidsort_ad;
a.a_nvals = slap_sl_malloc( numcsns * sizeof(struct berval), memctx );
for ( i=0; i<numcsns; i++ ) {
a.a_nvals[i].bv_len = sids[i];
a.a_nvals[i].bv_val = NULL;
}
a.a_vals = csns;
a.a_numvals = numcsns;
a.a_flags = 0;
rc = slap_sort_vals( (Modifications *)&a, &text, &i, memctx );
for ( i=0; i<numcsns; i++ )
sids[i] = a.a_nvals[i].bv_len;
slap_sl_free( a.a_nvals, memctx );
return rc;
}
int
slap_parse_sync_cookie(
struct sync_cookie *cookie,
@ -280,6 +342,8 @@ slap_parse_sync_cookie(
if ( cookie->numcsns ) {
cookie->sids = slap_parse_csn_sids( cookie->ctxcsn, cookie->numcsns,
memctx );
if ( cookie->numcsns > 1 )
slap_sort_csn_sids( cookie->ctxcsn, cookie->sids, cookie->numcsns, memctx );
}
return 0;
}

2
servers/slapd/proto-slap.h
View File

@ -1177,6 +1177,8 @@ LDAP_SLAPD_F (int) slap_parse_csn_sid LDAP_P((
struct berval * ));
LDAP_SLAPD_F (int *) slap_parse_csn_sids LDAP_P((
BerVarray, int, void *memctx ));
LDAP_SLAPD_F (int) slap_sort_csn_sids LDAP_P((
BerVarray, int *, int, void *memctx ));
LDAP_SLAPD_F (int) slap_parse_sync_cookie LDAP_P((
struct sync_cookie *, void *memctx ));
LDAP_SLAPD_F (int) slap_init_sync_cookie_ctxcsn LDAP_P((