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
|
// $Id$
#define ACE_BUILD_DLL
#include "ace/LSOCK.h"
#if !defined (ACE_LACKS_UNIX_DOMAIN_SOCKETS)
ACE_ALLOC_HOOK_DEFINE(ACE_LSOCK)
void
ACE_LSOCK::dump (void) const
{
ACE_TRACE ("ACE_LSOCK::dump");
ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
ACE_DEBUG ((LM_DEBUG, "aux_handle_ = %d", this->aux_handle_));
ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
}
#if defined (ACE_HAS_MSG)
// This routine sends an open file descriptor to <this->handle_>.
int
ACE_LSOCK::send_handle (const ACE_HANDLE handle) const
{
ACE_TRACE ("ACE_LSOCK::send_handle");
unsigned char a[2];
iovec iov;
msghdr send_msg;
#if defined (ACE_HAS_4_4BSD_SENDMSG_RECVMSG)
char cmsgbuf[ACE_BSD_CONTROL_MSG_LEN];
cmsghdr *cmsgptr = (cmsghdr *) cmsgbuf;
#endif /* ACE_HAS_4_4BSD_SENDMSG_RECVMSG */
a[0] = 0xab;
a[1] = 0xcd;
iov.iov_base = (char *) a;
iov.iov_len = sizeof a;
send_msg.msg_iov = &iov;
send_msg.msg_iovlen = 1;
send_msg.msg_name = 0;
send_msg.msg_namelen = 0;
#if defined (ACE_HAS_4_4BSD_SENDMSG_RECVMSG)
cmsgptr->cmsg_level = SOL_SOCKET;
cmsgptr->cmsg_type = SCM_RIGHTS;
cmsgptr->cmsg_len = sizeof cmsgbuf;
send_msg.msg_control = cmsgbuf;
send_msg.msg_controllen = sizeof cmsgbuf;
*(ACE_HANDLE *) CMSG_DATA (cmsgptr) = handle;
send_msg.msg_flags = 0;
#else
send_msg.msg_accrights = (char *) &handle;
send_msg.msg_accrightslen = sizeof handle;
#endif /* ACE_HAS_4_4BSD_SENDMSG_RECVMSG */
return ACE_OS::sendmsg (this->get_handle (), &send_msg, 0);
}
// This file receives an open file descriptor from <this->handle_>.
// Note, this routine returns -1 if problems occur, 0 if we recv a
// message that does not have file descriptor in it, and 1 otherwise.
int
ACE_LSOCK::recv_handle (ACE_HANDLE &handle, char *pbuf, int *len) const
{
ACE_TRACE ("ACE_LSOCK::recv_handle");
unsigned char a[2];
iovec iov;
msghdr recv_msg;
#if defined (ACE_HAS_4_4BSD_SENDMSG_RECVMSG)
char cmsgbuf[ACE_BSD_CONTROL_MSG_LEN];
#endif /* ACE_HAS_4_4BSD_SENDMSG_RECVMSG */
if (pbuf != 0 && len != 0)
{
iov.iov_base = pbuf;
iov.iov_len = *len;
}
else
{
iov.iov_base = (char *) a;
iov.iov_len = sizeof a;
}
recv_msg.msg_iov = &iov;
recv_msg.msg_iovlen = 1;
recv_msg.msg_name = 0;
recv_msg.msg_namelen = 0;
#if defined (ACE_HAS_4_4BSD_SENDMSG_RECVMSG)
recv_msg.msg_control = cmsgbuf;
recv_msg.msg_controllen = sizeof cmsgbuf;
#else
recv_msg.msg_accrights = (char *) &handle;
recv_msg.msg_accrightslen = sizeof handle;
#endif /* ACE_HAS_4_4BSD_SENDMSG_RECVMSG */
#if defined (ACE_HAS_STREAMS)
#if defined (ACE_HAS_4_4BSD_SENDMSG_RECVMSG)
ACE_UNUSED_ARG (handle);
#endif /* ACE_HAS_4_4BSD_SENDMSG_RECVMSG */
ssize_t nbytes = ACE_OS::recvmsg (this->get_handle (), &recv_msg, 0);
if (nbytes != ACE_INVALID_HANDLE)
{
if (len != 0)
*len = nbytes;
if (nbytes == sizeof a
&& ((unsigned char *) iov.iov_base)[0] == 0xab
&& ((unsigned char *) iov.iov_base)[1] == 0xcd)
return 1;
else
return 0;
}
#else
ssize_t nbytes = ACE_OS::recvmsg (this->get_handle (), &recv_msg, MSG_PEEK);
if (nbytes != ACE_INVALID_HANDLE)
{
if (nbytes == sizeof a
&& ((unsigned char *) iov.iov_base)[0] == 0xab
&& ((unsigned char *) iov.iov_base)[1] == 0xcd)
{
#if defined (ACE_HAS_4_4BSD_SENDMSG_RECVMSG)
recv_msg.msg_control = cmsgbuf;
recv_msg.msg_controllen = sizeof cmsgbuf;
#else
recv_msg.msg_accrights = (char *) &handle;
recv_msg.msg_accrightslen = sizeof handle;
#endif /* ACE_HAS_4_4BSD_SENDMSG_RECVMSG */
if (ACE_OS::recvmsg (this->get_handle (),
&recv_msg, 0) == ACE_INVALID_HANDLE)
return ACE_INVALID_HANDLE;
else
{
#if defined (ACE_HAS_4_4BSD_SENDMSG_RECVMSG)
cmsghdr *cmsgptr = (cmsghdr *) cmsgbuf;
handle = *(ACE_HANDLE *) CMSG_DATA (cmsgptr) ;
#endif /* ACE_HAS_4_4BSD_SENDMSG_RECVMSG */
return 1;
}
}
else
{
if (len != 0)
*len = nbytes;
return 0;
}
}
#endif /* ACE_HAS_STREAMS */
else
return ACE_INVALID_HANDLE;
}
#endif /* ACE_HAS_MSG */
#endif /* ACE_LACKS_UNIX_DOMAIN_SOCKETS */
|
