1<ndbm.h>(0P) POSIX Programmer's Manual <ndbm.h>(0P)
2
3
4
6 ndbm.h - definitions for ndbm database operations
7
9 #include <ndbm.h>
10
12 The <ndbm.h> header shall define the datum type as a structure that
13 includes at least the following members:
14
15
16 void *dptr A pointer to the application's data.
17 size_t dsize The size of the object pointed to by dptr.
18
19 The size_t type shall be defined as described in <stddef.h> .
20
21 The <ndbm.h> header shall define the DBM type.
22
23 The following constants shall be defined as possible values for the
24 store_mode argument to dbm_store():
25
26 DBM_INSERT
27 Insertion of new entries only.
28
29 DBM_REPLACE
30 Allow replacing existing entries.
31
32
33 The following shall be declared as functions and may also be defined as
34 macros. Function prototypes shall be provided.
35
36
37 int dbm_clearerr(DBM *);
38 void dbm_close(DBM *);
39 int dbm_delete(DBM *, datum);
40 int dbm_error(DBM *);
41 datum dbm_fetch(DBM *, datum);
42 datum dbm_firstkey(DBM *);
43 datum dbm_nextkey(DBM *);
44 DBM *dbm_open(const char *, int, mode_t);
45 int dbm_store(DBM *, datum, datum, int);
46
47 The mode_t type shall be defined through typedef as described in
48 <sys/types.h> .
49
50 The following sections are informative.
51
53 None.
54
56 None.
57
59 None.
60
62 <stddef.h>, <sys/types.h>, the System Interfaces volume of
63 IEEE Std 1003.1-2001, dbm_clearerr()
64
66 Portions of this text are reprinted and reproduced in electronic form
67 from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
68 -- Portable Operating System Interface (POSIX), The Open Group Base
69 Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
70 Electrical and Electronics Engineers, Inc and The Open Group. In the
71 event of any discrepancy between this version and the original IEEE and
72 The Open Group Standard, the original IEEE and The Open Group Standard
73 is the referee document. The original Standard can be obtained online
74 at http://www.opengroup.org/unix/online.html .
75
76
77
78IEEE/The Open Group 2003 <ndbm.h>(0P)