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
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* db_pickle.cc
*
* Copyright (c) 1988-2000 by Sun Microsystems, Inc.
* All Rights Reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/* #include <sys/types.h> */
#include <stdio.h>
/* #include <syslog.h> */
#include <string.h>
#include <unistd.h>
#include "db_headers.h"
#include "db_pickle.h"
#include "nisdb_mt.h"
/* Constructor. Creates pickle_file with given name and mode. */
pickle_file::pickle_file(char* f, pickle_mode m)
{
if ((filename = strdup(f)) == NULL) {
FATAL("pickle_file::pickle_file: cannot allocate space",
DB_MEMORY_LIMIT);
}
INITRW(pickle);
mode = m;
}
/*
* Opens pickle_file with mode specified with constructor.
* Returns TRUE if open was successful; FALSE otherwise.
*/
bool_t
pickle_file::open()
{
WRITELOCK(this, FALSE, "w pickle_file::open");
if (mode == PICKLE_READ) {
file = fopen(filename, "r");
if (file)
xdrstdio_create(&(xdr), file, XDR_DECODE);
} else if (mode == PICKLE_WRITE) {
file = fopen(filename, "w");
if (file) {
setvbuf(file, NULL, _IOFBF, 81920);
xdrstdio_create(&(xdr), file, XDR_ENCODE);
}
} else if (mode == PICKLE_APPEND) {
file = fopen(filename, "a");
if (file)
xdrstdio_create(&(xdr), file, XDR_ENCODE);
}
if (file == NULL) {
WRITEUNLOCK(this, FALSE, "wu pickle_file::open");
return (FALSE);
}
WRITEUNLOCK(this, FALSE, "wu pickle_file::open");
return (TRUE);
}
/* Closes pickle_file. Returns 0 if successful; -1 otherwise. */
int
pickle_file::close()
{
int ret;
WRITELOCK(this, EOF, "w pickle_file::close");
xdr_destroy(&(xdr));
ret = fclose(file);
WRITEUNLOCK(this, EOF, "wu pickle_file::close");
return (ret);
}
/*
* dump or load data structure to/from 'filename' using function 'f'.
* dump or load is determined by 'mode' with which pickle_file was created.
* Returns 0 if successful; 1 if file cannot be opened in mode
* specified; -1 if transfer failed do to encoding/decoding errors.
*/
int
pickle_file::transfer(pptr p, bool_t (*f) (XDR*, pptr))
{
WRITELOCK(this, -1, "w pickle_file::transfer");
if (open()) {
if ((f)(&xdr, p) == FALSE) {
close();
WRITEUNLOCK(this, -1, "wu pickle_file::transfer");
return (-1);
} else {
fsync(fileno(file));
WRITEUNLOCK(this, -1, "wu pickle_file::transfer");
return (close());
}
}
WRITEUNLOCK(this, -1, "wu pickle_file::transfer");
return (1);
}
|
