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NAME |LIBRARY |SYNOPSIS |DESCRIPTION |DEPRECATED INTERFACES |SEE ALSO |ACKNOWLEDGEMENTS |COLOPHON | |
LDAP_COMPARE(3) Library Functions ManualLDAP_COMPARE(3)ldap_compare, ldap_compare_s, ldap_compare_ext, ldap_compare_ext_s - Perform an LDAP compare operation.
OpenLDAP LDAP (libldap, -lldap)
#include <ldap.h>int ldap_compare_ext(LDAP *ld,char *dn,char *attr,const struct berval *bvalue,LDAPControl **serverctrls,LDAPControl **clientctrls,int *msgidp);int ldap_compare_ext_s(LDAP *ld,char *dn,char *attr,const struct berval *bvalue,LDAPControl **serverctrls,LDAPControl **clientctrls);
Theldap_compare_ext_s()routine is used to perform an LDAP compare operation synchronously. It takesdn, the DN of the entry upon which to perform the compare, andattr andvalue, the attribute description and value to compare to those found in the entry. It returns a code, which will be LDAP_COMPARE_TRUE if the entry contains the attribute value and LDAP_COMPARE_FALSE if it does not. Otherwise, an error code is returned that indicates the nature of the problem. Seeldap(3) for details. Theldap_compare_ext()routine is used to perform an LDAP compare operation asynchronously. It takes the same parameters asldap_compare_ext_s(), but provides the message id of the request it initiated in the integer pointed tomsgidp. The result of the compare can be obtained by a subsequent call toldap_result(3). Both routines allow server and client controls to be specified to extend the compare request.
The routinesldap_compare() andldap_compare_s() are deprecated in favor ofldap_compare_ext() andldap_compare_ext_s(), respectively. Deprecated interfaces generally remain in the library. The macro LDAP_DEPRECATED can be defined to a non-zero value (e.g., -DLDAP_DEPRECATED=1) when compiling program designed to use deprecated interfaces. It is recommended that developers writing new programs, or updating old programs, avoid use of deprecated interfaces. Over time, it is expected that documentation (and, eventually, support) for deprecated interfaces to be eliminated.
ldap(3),ldap_error(3)
OpenLDAP Softwareis developed and maintained by The OpenLDAP Project <http://www.openldap.org/>.OpenLDAP Softwareis derived from the University of Michigan LDAP 3.3 Release.
This page is part of theOpenLDAP (an open source implementation of the Lightweight Directory Access Protocol) project. Information about the project can be found at ⟨http://www.openldap.org/⟩. If you have a bug report for this manual page, see ⟨http://www.openldap.org/its/⟩. This page was obtained from the project's upstream Git repository ⟨https://git.openldap.org/openldap/openldap.git⟩ on 2025-08-11. (At that time, the date of the most recent commit that was found in the repository was 2025-08-05.) If you discover any rendering problems in this HTML version of the page, or you believe there is a better or more up-to-date source for the page, or you have corrections or improvements to the information in this COLOPHON (which isnot part of the original manual page), send a mail to man-pages@man7.orgOpenLDAP LDVERSION RELEASEDATELDAP_COMPARE(3)Pages that refer to this page:ldapcompare(1), ldap(3)
HTML rendering created 2025-09-06 byMichael Kerrisk, author ofThe Linux Programming Interface. For details of in-depthLinux/UNIX system programming training courses that I teach, lookhere. Hosting byjambit GmbH. | |