8 #define MAX_MSG_SIZE 32
13 char mtext[MAX_MSG_SIZE];
16 #define TEST_STRING "Test sysv5 msg"
19 #define ANOTHER_TEST_STRING "Yet another test sysv5 msg"
20 #define ANOTHER_MSG_TYPE 26538
28 struct msg1 *messages;
31 int restore_queue(struct msgque_data *msgque)
36 fd = open("/proc/sys/kernel/msg_next_id", O_WRONLY);
38 printf("Failed to open /proc/sys/kernel/msg_next_id\n");
41 sprintf(buf, "%d", msgque->msq_id);
43 ret = write(fd, buf, strlen(buf));
44 if (ret != strlen(buf)) {
45 printf("Failed to write to /proc/sys/kernel/msg_next_id\n");
49 id = msgget(msgque->key, msgque->mode | IPC_CREAT | IPC_EXCL);
51 printf("Failed to create queue\n");
55 if (id != msgque->msq_id) {
56 printf("Restored queue has wrong id (%d instead of %d)\n",
62 for (i = 0; i < msgque->qnum; i++) {
63 if (msgsnd(msgque->msq_id, &msgque->messages[i].mtype,
64 msgque->messages[i].msize, IPC_NOWAIT) != 0) {
65 printf("msgsnd failed (%m)\n");
73 if (msgctl(id, IPC_RMID, 0))
74 printf("Failed to destroy queue: %d\n", -errno);
78 int check_and_destroy_queue(struct msgque_data *msgque)
84 ret = msgrcv(msgque->msq_id, &message.mtype, MAX_MSG_SIZE,
89 printf("Failed to read IPC message: %m\n");
93 if (ret != msgque->messages[cnt].msize) {
94 printf("Wrong message size: %d (expected %d)\n", ret,
95 msgque->messages[cnt].msize);
99 if (message.mtype != msgque->messages[cnt].mtype) {
100 printf("Wrong message type\n");
104 if (memcmp(message.mtext, msgque->messages[cnt].mtext, ret)) {
105 printf("Wrong message content\n");
112 if (cnt != msgque->qnum) {
113 printf("Wrong message number\n");
120 if (msgctl(msgque->msq_id, IPC_RMID, 0)) {
121 printf("Failed to destroy queue: %d\n", -errno);
127 int dump_queue(struct msgque_data *msgque)
129 struct msqid64_ds ds;
133 for (kern_id = 0; kern_id < 256; kern_id++) {
134 ret = msgctl(kern_id, MSG_STAT, &ds);
136 if (errno == -EINVAL)
138 printf("Failed to get stats for IPC queue with id %d\n",
143 if (ret == msgque->msq_id)
147 msgque->messages = malloc(sizeof(struct msg1) * ds.msg_qnum);
148 if (msgque->messages == NULL) {
149 printf("Failed to get stats for IPC queue\n");
153 msgque->qnum = ds.msg_qnum;
154 msgque->mode = ds.msg_perm.mode;
155 msgque->qbytes = ds.msg_qbytes;
157 for (i = 0; i < msgque->qnum; i++) {
158 ret = msgrcv(msgque->msq_id, &msgque->messages[i].mtype,
159 MAX_MSG_SIZE, i, IPC_NOWAIT | MSG_COPY);
161 printf("Failed to copy IPC message: %m (%d)\n", errno);
164 msgque->messages[i].msize = ret;
169 int fill_msgque(struct msgque_data *msgque)
173 msgbuf.mtype = MSG_TYPE;
174 memcpy(msgbuf.mtext, TEST_STRING, sizeof(TEST_STRING));
175 if (msgsnd(msgque->msq_id, &msgbuf.mtype, sizeof(TEST_STRING),
177 printf("First message send failed (%m)\n");
181 msgbuf.mtype = ANOTHER_MSG_TYPE;
182 memcpy(msgbuf.mtext, ANOTHER_TEST_STRING, sizeof(ANOTHER_TEST_STRING));
183 if (msgsnd(msgque->msq_id, &msgbuf.mtype, sizeof(ANOTHER_TEST_STRING),
185 printf("Second message send failed (%m)\n");
191 int main(int argc, char **argv)
194 struct msgque_data msgque;
197 printf("Please run the test as root - Exiting.\n");
201 msgque.key = ftok(argv[0], 822155650);
202 if (msgque.key == -1) {
203 printf("Can't make key\n");
207 msgque.msq_id = msgget(msgque.key, IPC_CREAT | IPC_EXCL | 0666);
208 if (msgque.msq_id == -1) {
210 printf("Can't create queue\n");
214 err = fill_msgque(&msgque);
216 printf("Failed to fill queue\n");
220 err = dump_queue(&msgque);
222 printf("Failed to dump queue\n");
226 err = check_and_destroy_queue(&msgque);
228 printf("Failed to check and destroy queue\n");
232 err = restore_queue(&msgque);
234 printf("Failed to restore queue\n");
238 err = check_and_destroy_queue(&msgque);
240 printf("Failed to test queue\n");
246 if (msgctl(msgque.msq_id, IPC_RMID, 0)) {
247 printf("Failed to destroy queue: %d\n", -errno);