cannot create a posix message queue

Question

I am trying to create a POSIX message queue but mq_open() returns -1 all the time. Here is my code. What might be the reason? How can I understand?

mqd_t mq;
struct mq_attr attr;
mq = mq_open("/randomMq", (O_RDONLY | O_CREAT), 0666, &attr);
printf("%d\n",mq);

"On error, mq_open() returns (mqd_t) -1, with errno set to indicate the error.", says the manpage. So what's the value of errno? Perhaps try a quick perror... — Matt Gibson
– Matt Gibson, Commented Feb 24, 2018 at 13:54
Thank you. errno returns "Function not implemented". I think that means posix queues are not implemented on Bash on Ubuntu on Windows subsystem which I am using. — Enes Keles
– Enes Keles, Commented Feb 24, 2018 at 14:19

Matt Gibson · Accepted Answer · 2018-02-24 14:37:23Z

3

answered Feb 24, 2018 at 14:37

Matt Gibson

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