aboutsummaryrefslogtreecommitdiff
path: root/src/gdbmsetopt.c
blob: d3b333b51251b817ff926e379ca41bddbc9b936a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
/* gdbmsetopt.c - set options pertaining to a GDBM descriptor. */

/* This file is part of GDBM, the GNU data base manager.
   Copyright (C) 1993, 1994, 2007  Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

/* Include system configuration before all else. */
#include "autoconf.h"

#include "gdbmdefs.h"

/* operate on an already open descriptor. */

/* ARGSUSED */
int
gdbm_setopt(GDBM_FILE dbf, int optflag, int *optval, int optlen)
{
  switch (optflag)
    {
      case GDBM_CACHESIZE:
        /* Optval will point to the new size of the cache. */
        if (dbf->bucket_cache != NULL)
          {
            gdbm_errno = GDBM_OPT_ALREADY_SET;
            return -1;
          }

        return _gdbm_init_cache(dbf, ((*optval) > 9) ? (*optval) : 10);

      case GDBM_FASTMODE:
      	/* Obsolete form of SYNCMODE. */
	if (!optval || ((*optval != TRUE) && (*optval != FALSE)))
	  {
	    gdbm_errno = GDBM_OPT_ILLEGAL;
	    return -1;
	  }

	dbf->fast_write = *optval;
	break;

      case GDBM_SYNCMODE:
      	/* Optval will point to either true or false. */
	if (!optval || ((*optval != TRUE) && (*optval != FALSE)))
	  {
	    gdbm_errno = GDBM_OPT_ILLEGAL;
	    return -1;
	  }

	dbf->fast_write = !(*optval);
	break;

      case GDBM_CENTFREE:
      	/* Optval will point to either true or false. */
	if (!optval || ((*optval != TRUE) && (*optval != FALSE)))
	  {
	    gdbm_errno = GDBM_OPT_ILLEGAL;
	    return -1;
	  }

	dbf->central_free = *optval;
	break;

      case GDBM_COALESCEBLKS:
      	/* Optval will point to either true or false. */
	if (!optval || ((*optval != TRUE) && (*optval != FALSE)))
	  {
	    gdbm_errno = GDBM_OPT_ILLEGAL;
	    return -1;
	  }

	dbf->coalesce_blocks = *optval;
	break;

      default:
        gdbm_errno = GDBM_OPT_ILLEGAL;
        return -1;
    }

  return 0;
}

Return to:

Send suggestions and report system problems to the System administrator.