| #include <stdio.h> |
| #include <errno.h> |
| #include <sys/msg.h> |
| |
| int |
| main(void) |
| { |
| int rc, id; |
| struct msqid_ds ds; |
| |
| id = msgget(IPC_PRIVATE, 0600); |
| if (id < 0) |
| return 77; |
| printf("msgget\\(IPC_PRIVATE, 0600\\) += %d\n", id); |
| |
| if (msgctl(id, IPC_STAT, &ds)) |
| goto fail; |
| printf("msgctl\\(%d, (IPC_64\\|)?IPC_STAT, %p\\) += 0\n", id, &ds); |
| |
| int max = msgctl(0, MSG_INFO, &ds); |
| if (max < 0) |
| goto fail; |
| printf("msgctl\\(0, (IPC_64\\|)?MSG_INFO, %p\\) += %d\n", &ds, max); |
| |
| rc = msgctl(id, MSG_STAT, &ds); |
| if (rc != id) { |
| /* |
| * In linux < v2.6.24-rc1 the first argument must be |
| * an index in the kernel's internal array. |
| */ |
| if (-1 != rc || EINVAL != errno) |
| goto fail; |
| printf("msgctl\\(%d, (IPC_64\\|)?MSG_STAT, %p\\) += -1 EINVAL \\(Invalid argument\\)\n", id, &ds); |
| } else { |
| printf("msgctl\\(%d, (IPC_64\\|)?MSG_STAT, %p\\) += %d\n", id, &ds, id); |
| } |
| |
| rc = 0; |
| done: |
| if (msgctl(id, IPC_RMID, 0) < 0) |
| return 1; |
| printf("msgctl\\(%d, (IPC_64\\|)?IPC_RMID, 0\\) += 0\n", id); |
| return rc; |
| |
| fail: |
| rc = 1; |
| goto done; |
| } |