The Single UNIX ® Specification, Version 2
Copyright © 1997 The Open Group


ndbm.h - definitions for ndbm database operations


#include <ndbm.h>


The <ndbm.h> header defines the datum type as a structure that includes 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 size_t type is defined through typedef as described in <stddef.h>.

The <ndbm.h> header defines the DBM type through typedef.

The following constants are defined as possible values for the store_mode argument to dbm_store():

Insertion of new entries only
Allow replacing existing entries

The following are declared as functions and may also be defined as macros. Function prototypes must be provided for use with an ISO C compiler.

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 mode_t type is defined through typedef as described in <sys/types.h>.







UNIX ® is a registered Trademark of The Open Group.
Copyright © 1997 The Open Group
[ Main Index | XSH | XCU | XBD | XCURSES | XNS ]