1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <syslog.h>
4 #include <mach/mach.h>
5 #include <servers/bootstrap.h>
6 struct msg_send
7 {
8 mach_msg_header_t hdr;
9 char body[256];
10 };
11
12 struct msg_recv
13 {
14 mach_msg_header_t hdr;
15 char body[256];
16 mach_msg_trailer_t trailer;
17 };
18
main()19 int main()
20 {
21 kern_return_t kr;
22 mach_port_t bport, port;
23 struct msg_recv message;
24 struct msg_send reply;
25
26 task_get_special_port(mach_task_self(), TASK_BOOTSTRAP_PORT, &bport);
27 syslog(LOG_ERR, "bootstrap port: %d", bport);
28
29 kr = bootstrap_check_in(bootstrap_port, "mach.service-test", &port);
30 if (kr != KERN_SUCCESS) {
31 syslog(LOG_ERR, "bootstrap_check_in: kr=%d", kr);
32 exit(1);
33 }
34
35 syslog(LOG_ERR, "service port: %d", port);
36
37 for (;;) {
38 message.hdr.msgh_local_port = port;
39 message.hdr.msgh_size = sizeof(struct msg_recv);
40
41 kr = mach_msg_receive((mach_msg_header_t *)&message);
42 if (kr != KERN_SUCCESS)
43 syslog(LOG_ERR, "mach_msg_receive failure: kr=%d", kr);
44 else
45 syslog(LOG_ERR, "received message on port %d: body=%s", message.hdr.msgh_remote_port, message.body);
46
47 memset(&reply, 0, sizeof(struct msg_send));
48 sprintf(&reply.body[0], "hello buddy");
49 reply.hdr.msgh_local_port = MACH_PORT_NULL;
50 reply.hdr.msgh_remote_port = message.hdr.msgh_remote_port;
51 reply.hdr.msgh_size = sizeof(struct msg_send);
52 reply.hdr.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0);
53 kr = mach_msg_send((mach_msg_header_t *)&reply);
54 if (kr != KERN_SUCCESS)
55 syslog(LOG_ERR, "mach_msg_send failure: kr=%d", kr);
56 }
57 }
58
59