ndbm.h - Online Linux Manual PageSection : 0P
Updated : 2017
Source : IEEE/The Open Group
Note : POSIX Programmer's Manual

PROLOGThis manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAMEndbm.h — definitions for ndbm database operations

SYNOPSIS#include <ndbm.h>

DESCRIPTIONThe <ndbm.h> header shall define the datum type as a structure, which shall include at least the following members: void *dptr A pointer to the application's data. size_t dsize The size of the object pointed to by dptr.The <ndbm.h> header shall define the size_t type as described in <stddef.h>. The <ndbm.h> header shall define the DBM type. The <ndbm.h> header shall define the following symbolic constants as possible values for the store_mode argument to dbm_store(): DBM_INSERT Insertion of new entries only. DBM_REPLACE Allow replacing existing entries. The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided. int dbm_clearerr(DBM *); void dbm_close(DBM *); int dbm_delete(DBM *, datum); int dbm_error(DBM *); datum dbm_fetch(DBM *, datum); datum dbm_firstkey(DBM *); datum dbm_nextkey(DBM *); DBM *dbm_open(const char *, int, mode_t); int dbm_store(DBM *, datum, datum, int);The <ndbm.h> header shall define the mode_t type through typedef, as described in <sys/types.h>. The following sections are informative.

APPLICATION USAGENone.

RATIONALENone.

FUTURE DIRECTIONSNone.

SEE ALSO<stddef.h>, <sys_types.h> The System Interfaces volume of POSIX.1‐2017, dbm_clearerr()

COPYRIGHTPortions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html . Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .
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