определения для операций с базой данных ndbm (definitions for ndbm database operations)
Пролог (Prolog)
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.
Имя (Name)
ndbm.h — definitions for ndbm database operations
Синопсис (Synopsis)
#include <ndbm.h>
Описание (Description)
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.
Использование в приложениях (Application usage)
None.
Обоснование (Rationale)
None.
Будущие направления (Future directions)
None.
Смотри также (See also)
stddef.h(0p), sys_types.h(0p)
The System Interfaces volume of POSIX.1‐2017, dbm_clearerr(3p)
