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
|
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
#include "mmap_h.h"
static ap_status_t mmap_cleanup(void *themmap)
{
ap_mmap_t *mm = themmap;
int rv;
rv = delete_area(mm->area);
if (rv == 0) {
mm->mm = 0;
mm->area = -1;
return APR_SUCCESS;
}
else
return errno;
}
ap_status_t ap_mmap_create(ap_mmap_t **new, ap_file_t *file, ap_off_t offset, ap_size_t size,
ap_pool_t *cont)
{
void *mm;
area_id aid = -1;
char *areaname = "apr_mmap\0";
uint32 pages = 0;
if (file == NULL || file->buffered || file->filedes == -1)
return APR_EBADF;
(*new) = (ap_mmap_t *)ap_palloc(cont, sizeof(ap_mmap_t));
pages = ((size -1) / B_PAGE_SIZE) + 1;
ap_seek(file, APR_SET, &offset);
aid = create_area(areaname, &mm , B_ANY_ADDRESS, pages * B_PAGE_SIZE,
B_FULL_LOCK, B_READ_AREA|B_WRITE_AREA);
if (aid < B_NO_ERROR) {
/* we failed to get an mmap'd file... */
return APR_ENOMEM;
}
if (aid >= B_NO_ERROR)
read(file->filedes, mm, size);
(*new)->mm = mm;
(*new)->size = size;
(*new)->area = aid;
(*new)->cntxt = cont;
/* register the cleanup... */
ap_register_cleanup((*new)->cntxt, (void*)(*new), mmap_cleanup,
ap_null_cleanup);
return APR_SUCCESS;
}
ap_status_t ap_mmap_delete(ap_mmap_t *mmap)
{
ap_status_t rv;
if (mmap->area == -1)
return APR_ENOENT;
if ((rv = mmap_cleanup(mmap)) == APR_SUCCESS) {
ap_kill_cleanup(mmap->cntxt, mmap, mmap_cleanup);
return APR_SUCCESS;
}
return rv;
}
|
