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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
/* ====================================================================
* Copyright (c) 1999 The Apache Group. 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. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* 4. The names "Apache Server" and "Apache Group" 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 names without prior written
* permission of the Apache Group.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``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 GROUP 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 Group.
* For more information on the Apache Group and the Apache HTTP server
* project, please see <http://www.apache.org/>.
*
*/
#include "threadproc.h"
/* ***APRDOC********************************************************
* ap_status_t ap_detach(ap_context_t *, ap_proc_t *)
* Detach the process from the controlling terminal.
* arg 1) The context to use if it is needed.
* arg 2) The new process handler
*/
ap_status_t ap_detach(struct proc_t **new, ap_context_t *cont)
{
int x;
(*new) = (struct proc_t *)ap_palloc(cont, sizeof(struct proc_t));
(*new)->cntxt = cont;
(*new)->attr = NULL;
chdir("/");
#if !defined(MPE) && !defined(OS2) && !defined(TPF)
/* Don't detach for MPE because child processes can't survive the death of
the parent. */
if ((x = fork()) > 0)
exit(0);
else if (x == -1) {
perror("fork");
fprintf(stderr, "unable to fork new process\n");
exit(1); /* we can't do anything here, so just exit. */
}
/* RAISE_SIGSTOP(DETACH);*/
#endif
#if HAVE_SETSID
if (((*new)->pid = setsid()) == -1) {
return errno;
}
#elif defined(NEXT) || defined(NEWSOS)
if (setpgrp(0, getpid()) == -1 || ((*new)->pid = getpgrp(0)) == -1) {
return errno;
}
#elif defined(OS2) || defined(TPF)
/* OS/2 don't support process group IDs */
(*new)->pid = getpid();
#elif defined(MPE)
/* MPE uses negative pid for process group */
(*new)->pid = -getpid();
#else
if (((*new)->pid = setpgrp(getpid(), 0)) == -1) {
return errno;
}
#endif
/* close out the standard file descriptors */
if (freopen("/dev/null", "r", stdin) == NULL) {
return APR_ALLSTD;
/* continue anyhow -- note we can't close out descriptor 0 because we
* have nothing to replace it with, and if we didn't have a descriptor
* 0 the next file would be created with that value ... leading to
* havoc.
*/
}
if (freopen("/dev/null", "w", stdout) == NULL) {
return APR_STDOUT;
}
/* We are going to reopen this again in a little while to the error
* log file, but better to do it twice and suffer a small performance
* hit for consistancy than not reopen it here.
*/
if (freopen("/dev/null", "w", stderr) == NULL) {
return APR_STDERR;
}
return APR_SUCCESS;
}
/* ***APRDOC********************************************************
* ap_status_t ap_get_procdata(char *, void *, ap_proc_t *)
* Return the context associated with the current proc.
* arg 1) The currently open proc.
* arg 2) The user data associated with the proc.
*/
ap_status_t ap_get_procdata(char *key, void *data, struct proc_t *proc)
{
if (proc != NULL) {
return ap_get_userdata(data, key, proc->cntxt);
}
else {
data = NULL;
return APR_ENOPROC;
}
}
/* ***APRDOC********************************************************
* ap_status_t ap_set_procdata(ap_proc_t *, void *, char *key,
ap_status_t (*cleanup) (void *))
* Return the context associated with the current proc.
* arg 1) The currently open proc.
* arg 2) The user data to associate with the proc.
*/
ap_status_t ap_set_procdata(void *data, char *key,
ap_status_t (*cleanup) (void *),
struct proc_t *proc)
{
if (proc != NULL) {
return ap_set_userdata(data, key, cleanup, proc->cntxt);
}
else {
data = NULL;
return APR_ENOPROC;
}
}
|
