PROLOG | NAME | SYNOPSIS | DESCRIPTION | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT

ndbm.h(0P)                POSIX Programmer's Manual               ndbm.h(0P)

PROLOG         top

       This 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.

NAME         top

       ndbm.h — definitions for ndbm database operations

SYNOPSIS         top

       #include <ndbm.h>

DESCRIPTION         top

       The <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 USAGE         top

       None.

RATIONALE         top

       None.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       stddef.h(0p), sys_types.h(0p)

       The System Interfaces volume of POSIX.1‐2008, dbm_clearerr(3p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The Open
       Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
       applied.) 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.unix.org/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 .

IEEE/The Open Group                 2013                          ndbm.h(0P)

Pages that refer to this page: dbm_clearerr(3p)