8 #include "../kselftest.h"
10 #define MAX_MSG_SIZE 32
15 char mtext[MAX_MSG_SIZE];
18 #define TEST_STRING "Test sysv5 msg"
21 #define ANOTHER_TEST_STRING "Yet another test sysv5 msg"
22 #define ANOTHER_MSG_TYPE 26538
30 struct msg1 *messages;
33 int restore_queue(struct msgque_data *msgque)
38 fd = open("/proc/sys/kernel/msg_next_id", O_WRONLY);
40 printf("Failed to open /proc/sys/kernel/msg_next_id\n");
43 sprintf(buf, "%d", msgque->msq_id);
45 ret = write(fd, buf, strlen(buf));
46 if (ret != strlen(buf)) {
47 printf("Failed to write to /proc/sys/kernel/msg_next_id\n");
51 id = msgget(msgque->key, msgque->mode | IPC_CREAT | IPC_EXCL);
53 printf("Failed to create queue\n");
57 if (id != msgque->msq_id) {
58 printf("Restored queue has wrong id (%d instead of %d)\n",
64 for (i = 0; i < msgque->qnum; i++) {
65 if (msgsnd(msgque->msq_id, &msgque->messages[i].mtype,
66 msgque->messages[i].msize, IPC_NOWAIT) != 0) {
67 printf("msgsnd failed (%m)\n");
75 if (msgctl(id, IPC_RMID, 0))
76 printf("Failed to destroy queue: %d\n", -errno);
80 int check_and_destroy_queue(struct msgque_data *msgque)
86 ret = msgrcv(msgque->msq_id, &message.mtype, MAX_MSG_SIZE,
91 printf("Failed to read IPC message: %m\n");
95 if (ret != msgque->messages[cnt].msize) {
96 printf("Wrong message size: %d (expected %d)\n", ret,
97 msgque->messages[cnt].msize);
101 if (message.mtype != msgque->messages[cnt].mtype) {
102 printf("Wrong message type\n");
106 if (memcmp(message.mtext, msgque->messages[cnt].mtext, ret)) {
107 printf("Wrong message content\n");
114 if (cnt != msgque->qnum) {
115 printf("Wrong message number\n");
122 if (msgctl(msgque->msq_id, IPC_RMID, 0)) {
123 printf("Failed to destroy queue: %d\n", -errno);
129 int dump_queue(struct msgque_data *msgque)
131 struct msqid64_ds ds;
135 for (kern_id = 0; kern_id < 256; kern_id++) {
136 ret = msgctl(kern_id, MSG_STAT, &ds);
140 printf("Failed to get stats for IPC queue with id %d\n",
145 if (ret == msgque->msq_id)
149 msgque->messages = malloc(sizeof(struct msg1) * ds.msg_qnum);
150 if (msgque->messages == NULL) {
151 printf("Failed to get stats for IPC queue\n");
155 msgque->qnum = ds.msg_qnum;
156 msgque->mode = ds.msg_perm.mode;
157 msgque->qbytes = ds.msg_qbytes;
159 for (i = 0; i < msgque->qnum; i++) {
160 ret = msgrcv(msgque->msq_id, &msgque->messages[i].mtype,
161 MAX_MSG_SIZE, i, IPC_NOWAIT | MSG_COPY);
163 printf("Failed to copy IPC message: %m (%d)\n", errno);
166 msgque->messages[i].msize = ret;
171 int fill_msgque(struct msgque_data *msgque)
175 msgbuf.mtype = MSG_TYPE;
176 memcpy(msgbuf.mtext, TEST_STRING, sizeof(TEST_STRING));
177 if (msgsnd(msgque->msq_id, &msgbuf.mtype, sizeof(TEST_STRING),
179 printf("First message send failed (%m)\n");
183 msgbuf.mtype = ANOTHER_MSG_TYPE;
184 memcpy(msgbuf.mtext, ANOTHER_TEST_STRING, sizeof(ANOTHER_TEST_STRING));
185 if (msgsnd(msgque->msq_id, &msgbuf.mtype, sizeof(ANOTHER_TEST_STRING),
187 printf("Second message send failed (%m)\n");
193 int main(int argc, char **argv)
196 struct msgque_data msgque;
199 printf("Please run the test as root - Exiting.\n");
200 return ksft_exit_fail();
203 msgque.key = ftok(argv[0], 822155650);
204 if (msgque.key == -1) {
205 printf("Can't make key: %d\n", -errno);
206 return ksft_exit_fail();
209 msgque.msq_id = msgget(msgque.key, IPC_CREAT | IPC_EXCL | 0666);
210 if (msgque.msq_id == -1) {
212 printf("Can't create queue: %d\n", err);
216 err = fill_msgque(&msgque);
218 printf("Failed to fill queue: %d\n", err);
222 err = dump_queue(&msgque);
224 printf("Failed to dump queue: %d\n", err);
228 err = check_and_destroy_queue(&msgque);
230 printf("Failed to check and destroy queue: %d\n", err);
234 err = restore_queue(&msgque);
236 printf("Failed to restore queue: %d\n", err);
240 err = check_and_destroy_queue(&msgque);
242 printf("Failed to test queue: %d\n", err);
245 return ksft_exit_pass();
248 if (msgctl(msgque.msq_id, IPC_RMID, 0)) {
249 printf("Failed to destroy queue: %d\n", -errno);
250 return ksft_exit_fail();
253 return ksft_exit_fail();