モジュールから実際のディレクトリにファイルを保存したい

実現したいこと

Apacheのモジュールから実際のディレクトリにファイルを保存したいです

問題

仮想的なディレクトリ？にファイルが保存されてしまいます

該当のソースコード

mod_filetest.c

C
1/* 
2**  mod_filetest.c -- Apache sample filetest module
3**  [Autogenerated via ``apxs -n filetest -g'']
4**
5**  To play with this sample module first compile it into a
6**  DSO file and install it into Apache's modules directory 
7**  by running:
8**
9**    $ apxs -c -i mod_filetest.c
10**
11**  Then activate it in Apache's apache2.conf file for instance
12**  for the URL /filetest in as follows:
13**
14**    #   apache2.conf
15**    LoadModule filetest_module modules/mod_filetest.so
16**    <Location /filetest>
17**    SetHandler filetest
18**    </Location>
19**
20**  Then after restarting Apache via
21**
22**    $ apachectl restart
23**
24**  you immediately can request the URL /filetest and watch for the
25**  output of this module. This can be achieved for instance via:
26**
27**    $ lynx -mime_header http://localhost/filetest 
28**
29**  The output should be similar to the following one:
30**
31**    HTTP/1.1 200 OK
32**    Date: Tue, 31 Mar 1998 14:42:22 GMT
33**    Server: Apache/1.3.4 (Unix)
34**    Connection: close
35**    Content-Type: text/html
36**  
37**    The sample page from mod_filetest.c
38*/ 
39
40#include "httpd.h"
41#include "http_config.h"
42#include "http_protocol.h"
43#include "ap_config.h"
44
45#include <stdio.h>
46
47/* The sample content handler */
48static int filetest_handler(request_rec *r)
49{
50    if (strcmp(r->handler, "filetest")) {
51        return DECLINED;
52    }
53    r->content_type = "text/html";      
54
55    if (!r->header_only){
56        FILE *fp;
57        fp = fopen("/var/tmp/fssv.txt", "w");
58        fclose(fp);
59
60        FILE *fp2 = fopen("/var/tmp/fssv.txt", "r");
61        if (fp2 == NULL){
62                ap_rputs("Not found", r);
63        }
64
65        ap_rputs("The sample page from mod_filetest.c\n", r);
66    }
67    return OK;
68}
69
70static void filetest_register_hooks(apr_pool_t *p)
71{
72    ap_hook_handler(filetest_handler, NULL, NULL, APR_HOOK_MIDDLE);
73}
74
75/* Dispatch list for API hooks */
76module AP_MODULE_DECLARE_DATA filetest_module = {
77    STANDARD20_MODULE_STUFF, 
78    NULL,                  /* create per-dir    config structures */
79    NULL,                  /* merge  per-dir    config structures */
80    NULL,                  /* create per-server config structures */
81    NULL,                  /* merge  per-server config structures */
82    NULL,                  /* table of config file commands       */
83    filetest_register_hooks  /* register hooks                      */
84};

fopenでファイルを作成して、存在を確認します
存在していなかったら Not found という文字を返します

default-ssl.conf

<VirtualHost *:443>
        DocumentRoot path
        ServerName domain
        SSLCertificateFile path
        SSLCertificateKeyFile path
        SSLCertificateChainFile path

        <FilesMatch ".filetest$">
                SetHandler filetest
        </FilesMatch>
</VirtualHost>