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85d4a676 SS |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
3 | Copyright 2011 Free Software Foundation, Inc. | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | #include <sys/shm.h> | |
19 | #include <sys/sem.h> | |
20 | #include <sys/msg.h> | |
21 | #include <stdio.h> | |
22 | #include <pthread.h> | |
23 | #include <arpa/inet.h> | |
24 | #include <sys/socket.h> | |
25 | ||
26 | static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; | |
27 | ||
28 | void * | |
29 | thread_proc (void *args) | |
30 | { | |
31 | pthread_mutex_lock (&mutex); | |
32 | pthread_mutex_unlock (&mutex); | |
33 | } | |
34 | ||
35 | int | |
36 | main (void) | |
37 | { | |
38 | const int flags = IPC_CREAT | 0666; | |
39 | int shmid, semid, msqid; | |
40 | FILE *fd; | |
41 | pthread_t thread; | |
42 | struct sockaddr_in sock_addr; | |
43 | int sock; | |
44 | unsigned short port; | |
45 | socklen_t size; | |
46 | int status; | |
47 | ||
48 | if ((shmid = shmget (3925, 4096, flags | IPC_EXCL)) < 0) | |
49 | { | |
50 | /* Attempt to delete the existing shared-memory region, then | |
51 | recreate it. */ | |
52 | shmctl (shmget (3925, 4096, flags), IPC_RMID, NULL); | |
53 | if ((shmid = shmget (3925, 4096, flags | IPC_EXCL)) < 0) | |
54 | { | |
55 | printf ("Cannot create shared-memory region.\n"); | |
56 | return 1; | |
57 | } | |
58 | } | |
59 | ||
60 | semid = semget (7428, 1, flags); | |
61 | msqid = msgget (5294, flags); | |
62 | fd = fopen ("/dev/null", "r"); | |
63 | ||
64 | /* Lock the mutex to prevent the new thread from finishing immediately. */ | |
65 | pthread_mutex_lock (&mutex); | |
66 | pthread_create (&thread, NULL, thread_proc, 0); | |
67 | ||
68 | sock = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP); | |
69 | if (sock < 0) | |
70 | { | |
71 | printf ("Cannot create socket.\n"); | |
72 | return 1; | |
73 | } | |
74 | ||
75 | sock_addr.sin_family = AF_INET; | |
76 | sock_addr.sin_port = 0; /* Bind to a free port. */ | |
77 | sock_addr.sin_addr.s_addr = htonl (INADDR_ANY); | |
78 | ||
79 | status = bind (sock, (struct sockaddr *) &sock_addr, sizeof (sock_addr)); | |
80 | if (status < 0) | |
81 | { | |
82 | printf ("Cannot bind socket.\n"); | |
83 | return 1; | |
84 | } | |
85 | ||
86 | /* Find the assigned port number of the socket. */ | |
87 | size = sizeof (sock_addr); | |
88 | status = getsockname (sock, (struct sockaddr *) &sock_addr, &size); | |
89 | if (status < 0) | |
90 | { | |
91 | printf ("Cannot find name of socket.\n"); | |
92 | return 1; | |
93 | } | |
94 | port = ntohs (sock_addr.sin_port); | |
95 | ||
96 | status = listen (sock, 1); | |
97 | if (status < 0) | |
98 | { | |
99 | printf ("Cannot listen on socket.\n"); | |
100 | return 1; | |
101 | } | |
102 | ||
103 | /* Set breakpoint here. */ | |
104 | ||
105 | shmctl (shmid, IPC_RMID, NULL); | |
106 | semctl (semid, 0, IPC_RMID, NULL); | |
107 | msgctl (msqid, IPC_RMID, NULL); | |
108 | fclose (fd); | |
109 | close (sock); | |
110 | ||
111 | pthread_mutex_unlock (&mutex); | |
112 | pthread_join (thread, NULL); | |
113 | ||
114 | return 0; | |
115 | } |