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NAME |LIBRARY |SYNOPSIS |DESCRIPTION |PROTOCOL RESULT CODES |API ERROR CODES |DEPRECATED |SEE ALSO |ACKNOWLEDGEMENTS |COLOPHON | |
LDAP_ERROR(3) Library Functions ManualLDAP_ERROR(3)ldap_perror, ld_errno, ldap_result2error, ldap_errlist, ldap_err2string - LDAP protocol error handling routines
OpenLDAP LDAP (libldap, -lldap)
#include <ldap.h>char *ldap_err2string( interr);
Theldap_err2string()routine provides short description of the various codes returned by routines in this library. The returned string is a pointer to a static area that should not be modified. These codes are either negative, indicating an API error code; positive, indicating an LDAP resultCode other than ´success' (0), or - zero, indicating both successful use of the API and the LDAP resultCode ´success' (0). The code associated with an LDAP session is accessible usingldap_get_option(3) andldap_set_option(3) with theLDAP_OPT_RESULT_CODEoption (previously calledLDAP_OPT_ERROR_NUMBER).
This section provides a partial list of protocol codes recognized by the library. As LDAP is extensible, additional values may be returned. A complete listing ofregistered LDAP result codes can be obtained from theInternet Assigned Numbers Authority <http://www.iana.org>. LDAP_SUCCESS The request was successful. LDAP_OPERATIONS_ERROR An operations error occurred. LDAP_PROTOCOL_ERROR A protocol violation was detected. LDAP_TIMELIMIT_EXCEEDED An LDAP time limit was exceeded. LDAP_SIZELIMIT_EXCEEDED An LDAP size limit was exceeded. LDAP_COMPARE_FALSE A compare operation returned false. LDAP_COMPARE_TRUE A compare operation returned true. LDAP_STRONG_AUTH_NOT_SUPPORTED The LDAP server does not support strong authentication. LDAP_STRONG_AUTH_REQUIRED Strong authentication is required for the operation. LDAP_PARTIAL_RESULTS Partial results only returned. LDAP_NO_SUCH_ATTRIBUTE The attribute type specified does not exist in the entry. LDAP_UNDEFINED_TYPE The attribute type specified is invalid. LDAP_INAPPROPRIATE_MATCHING Filter type not supported for the specified attribute. LDAP_CONSTRAINT_VIOLATION An attribute value specified violates some constraint (e.g., a postalAddress has too many lines, or a line that is too long). LDAP_TYPE_OR_VALUE_EXISTS An attribute type or attribute value specified already exists in the entry. LDAP_INVALID_SYNTAX An invalid attribute value was specified. LDAP_NO_SUCH_OBJECT The specified object does not exist in The Directory. LDAP_ALIAS_PROBLEM An alias in The Directory points to a nonexistent entry. LDAP_INVALID_DN_SYNTAX A syntactically invalid DN was specified. LDAP_IS_LEAF The object specified is a leaf. LDAP_ALIAS_DEREF_PROBLEM A problem was encountered when dereferencing an alias. LDAP_INAPPROPRIATE_AUTH Inappropriate authentication was specified (e.g., LDAP_AUTH_SIMPLE was specified and the entry does not have a userPassword attribute). LDAP_INVALID_CREDENTIALS Invalid credentials were presented (e.g., the wrong password). LDAP_INSUFFICIENT_ACCESS The user has insufficient access to perform the operation. LDAP_BUSY The DSA is busy. LDAP_UNAVAILABLE The DSA is unavailable. LDAP_UNWILLING_TO_PERFORM The DSA is unwilling to perform the operation. LDAP_LOOP_DETECT A loop was detected. LDAP_NAMING_VIOLATION A naming violation occurred. LDAP_OBJECT_CLASS_VIOLATION An object class violation occurred (e.g., a "must" attribute was missing from the entry). LDAP_NOT_ALLOWED_ON_NONLEAF The operation is not allowed on a nonleaf object. LDAP_NOT_ALLOWED_ON_RDN The operation is not allowed on an RDN. LDAP_ALREADY_EXISTS The entry already exists. LDAP_NO_OBJECT_CLASS_MODS Object class modifications are not allowed. LDAP_OTHER An unknown error occurred.
This section provides a complete list of API error codes recognized by the library. Note that LDAP_SUCCESS indicates success of an API call in addition to representing the return of the LDAP ´success' resultCode. LDAP_SERVER_DOWN The LDAP library can't contact the LDAP server. LDAP_LOCAL_ERROR Some local error occurred. This is usually a failed dynamic memory allocation. LDAP_ENCODING_ERROR An error was encountered encoding parameters to send to the LDAP server. LDAP_DECODING_ERROR An error was encountered decoding a result from the LDAP server. LDAP_TIMEOUT A timelimit was exceeded while waiting for a result. LDAP_AUTH_UNKNOWN The authentication method specified to ldap_bind() is not known. LDAP_FILTER_ERROR An invalid filter was supplied to ldap_search() (e.g., unbalanced parentheses). LDAP_PARAM_ERROR An ldap routine was called with a bad parameter. LDAP_NO_MEMORY An memory allocation (e.g., malloc(3) or other dynamic memory allocator) call failed in an ldap library routine. LDAP_USER_CANCELED Indicates the user cancelled the operation. LDAP_CONNECT_ERROR Indicates a connection problem. LDAP_NOT_SUPPORTED Indicates the routine was called in a manner not supported by the library. LDAP_CONTROL_NOT_FOUND Indicates the control provided is unknown to the client library. LDAP_NO_RESULTS_RETURNED Indicates no results returned. LDAP_MORE_RESULTS_TO_RETURN Indicates more results could be returned. LDAP_CLIENT_LOOP Indicates the library has detected a loop in its processing. LDAP_REFERRAL_LIMIT_EXCEEDED Indicates the referral limit has been exceeded.
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),
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_ERROR(3)Pages that refer to this page:ldap(3), ldap_abandon(3), ldap_add(3), ldap_bind(3), ldap_compare(3), ldap_controls(3), ldap_delete(3), ldap_first_attribute(3), ldap_first_entry(3), ldap_get_dn(3), ldap_get_option(3), ldap_get_values(3), ldap_modify(3), ldap_modrdn(3), ldap_search(3), ldap_tls(3)
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