From: Howard Chu <hyc@openldap.org>
Date: Tue, 7 Apr 2026 12:11:14 +0000 (+0100)
Subject: ITS#9612 slapd: change index_hash64 default to on
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=11340caa2abc0852945f9b8af4e162dba9298b6a;p=thirdparty%2Fopenldap.git

ITS#9612 slapd: change index_hash64 default to on

And document that the default is now 64bit, and the option
will be removed in the future.
---

diff --git a/doc/man/man5/slapd-config.5 b/doc/man/man5/slapd-config.5
index 37054b2ba4..d84fc6b77d 100644
--- a/doc/man/man5/slapd-config.5
+++ b/doc/man/man5/slapd-config.5
@@ -502,14 +502,15 @@ feature.  The default is 0. You may also want to set the
 option.
 .TP
 .B olcIndexHash64: { TRUE | FALSE }
-Use a 64 bit hash for indexing. The default is to use 32 bit hashes.
-These hashes are used for equality and substring indexing. The 64 bit
-version may be needed to avoid index collisions when the number of
+Use a 64 bit hash for indexing, otherwise 32 bit. The default is
+now 64 bit. These hashes are used for equality and substring indexing.
+The 64 bit version avoids index collisions when the number of
 indexed values exceeds ~64 million. (Note that substring indexing
 generates multiple index values per actual attribute value.)
 Indices generated with 32 bit hashes are incompatible with the 64 bit
-version, and vice versa. Any existing databases must be fully reloaded
-when changing this setting. This directive is only supported on 64 bit CPUs.
+version, and vice versa. Any existing databases must be fully reindexed
+when changing this setting. Since 64 bit is now the default, this option
+is deprecated and will eventually be removed.
 .TP
 .B olcIndexIntLen: <integer>
 Specify the key length for ordered integer indices. The most significant
diff --git a/doc/man/man5/slapd.conf.5 b/doc/man/man5/slapd.conf.5
index 89c77edcb2..6f4503e0bf 100644
--- a/doc/man/man5/slapd.conf.5
+++ b/doc/man/man5/slapd.conf.5
@@ -525,14 +525,15 @@ Read additional configuration information from the given file before
 continuing with the next line of the current file.
 .TP
 .B index_hash64 { on | off }
-Use a 64 bit hash for indexing. The default is to use 32 bit hashes.
-These hashes are used for equality and substring indexing. The 64 bit
-version may be needed to avoid index collisions when the number of
+Use a 64 bit hash for indexing, otherwise 32 bit. The default is
+now 64 bit. These hashes are used for equality and substring indexing.
+The 64 bit version avoids index collisions when the number of
 indexed values exceeds ~64 million. (Note that substring indexing
 generates multiple index values per actual attribute value.)
 Indices generated with 32 bit hashes are incompatible with the 64 bit
-version, and vice versa. Any existing databases must be fully reloaded
-when changing this setting. This directive is only supported on 64 bit CPUs.
+version, and vice versa. Any existing databases must be fully reindexed
+when changing this setting. Since 64 bit is now the default, this option
+is deprecated and will eventually be removed.
 .TP
 .B index_intlen <integer>
 Specify the key length for ordered integer indices. The most significant
diff --git a/servers/slapd/schema_init.c b/servers/slapd/schema_init.c
index 1fcfe36934..4305f97e94 100644
--- a/servers/slapd/schema_init.c
+++ b/servers/slapd/schema_init.c
@@ -109,10 +109,10 @@
 #ifdef LUTIL_HASH64_BYTES
 #define HASH_BYTES				LUTIL_HASH64_BYTES
 #define HASH_LEN	hashlen
-static void (*hashinit)(lutil_HASH_CTX *ctx) = lutil_HASHInit;
-static void (*hashupdate)(lutil_HASH_CTX *ctx,unsigned char const *buf, ber_len_t len) = lutil_HASHUpdate;
-static void (*hashfinal)(unsigned char digest[HASH_BYTES], lutil_HASH_CTX *ctx) = lutil_HASHFinal;
-static int hashlen = LUTIL_HASH_BYTES;
+static void (*hashinit)(lutil_HASH_CTX *ctx) = lutil_HASH64Init;
+static void (*hashupdate)(lutil_HASH_CTX *ctx,unsigned char const *buf, ber_len_t len) = lutil_HASH64Update;
+static void (*hashfinal)(unsigned char digest[HASH_BYTES], lutil_HASH_CTX *ctx) = lutil_HASH64Final;
+static int hashlen = LUTIL_HASH64_BYTES;
 #define HASH_Init(c)			hashinit(c)
 #define HASH_Update(c,buf,len)	hashupdate(c,buf,len)
 #define HASH_Final(d,c)			hashfinal(d,c)
@@ -145,7 +145,7 @@ int slap_hash64( int onoff )
 #define HASH_Update(c,buf,len)	lutil_HASHUpdate(c,buf,len)
 #define HASH_Final(d,c)			lutil_HASHFinal(d,c)
 
-int slap_has64( int onoff )
+int slap_hash64( int onoff )
 {
 	if ( onoff < 0 )
 		return 0;