1ndbm.h(0P) POSIX Programmer's Manual ndbm.h(0P)
2
3
4
6 This manual page is part of the POSIX Programmer's Manual. The Linux
7 implementation of this interface may differ (consult the corresponding
8 Linux manual page for details of Linux behavior), or the interface may
9 not be implemented on Linux.
10
11
13 ndbm.h — definitions for ndbm database operations
14
16 #include <ndbm.h>
17
19 The <ndbm.h> header shall define the datum type as a structure, which
20 shall include at least the following members:
21
22 void *dptr A pointer to the application's data.
23 size_t dsize The size of the object pointed to by dptr.
24
25 The <ndbm.h> header shall define the size_t type as described in <std‐
26 def.h>.
27
28 The <ndbm.h> header shall define the DBM type.
29
30 The <ndbm.h> header shall define the following symbolic constants as
31 possible values for the store_mode argument to dbm_store():
32
33 DBM_INSERT Insertion of new entries only.
34
35 DBM_REPLACE Allow replacing existing entries.
36
37 The following shall be declared as functions and may also be defined as
38 macros. Function prototypes shall be provided.
39
40 int dbm_clearerr(DBM *);
41 void dbm_close(DBM *);
42 int dbm_delete(DBM *, datum);
43 int dbm_error(DBM *);
44 datum dbm_fetch(DBM *, datum);
45 datum dbm_firstkey(DBM *);
46 datum dbm_nextkey(DBM *);
47 DBM *dbm_open(const char *, int, mode_t);
48 int dbm_store(DBM *, datum, datum, int);
49
50 The <ndbm.h> header shall define the mode_t type through typedef, as
51 described in <sys/types.h>.
52
53 The following sections are informative.
54
56 None.
57
59 None.
60
62 None.
63
65 <stddef.h>, <sys_types.h>
66
67 The System Interfaces volume of POSIX.1‐2008, dbm_clearerr()
68
70 Portions of this text are reprinted and reproduced in electronic form
71 from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
72 -- Portable Operating System Interface (POSIX), The Open Group Base
73 Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
74 cal and Electronics Engineers, Inc and The Open Group. (This is
75 POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
76 event of any discrepancy between this version and the original IEEE and
77 The Open Group Standard, the original IEEE and The Open Group Standard
78 is the referee document. The original Standard can be obtained online
79 at http://www.unix.org/online.html .
80
81 Any typographical or formatting errors that appear in this page are
82 most likely to have been introduced during the conversion of the source
83 files to man page format. To report such errors, see https://www.ker‐
84 nel.org/doc/man-pages/reporting_bugs.html .
85
86
87
88IEEE/The Open Group 2013 ndbm.h(0P)