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Date: Mon, 13 Mar 2023 09:55:09 +1100
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Subject: Re: 3.4.6-1 shm_open always returns -1, errno EINVAL
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To: Csaba Raduly <rcsaba AT gmail DOT com>, cygwin list <cygwin AT cygwin DOT com>
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From: Matthew Rickard via Cygwin <cygwin AT cygwin DOT com>
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That's perfect, thank you!

On 12/03/2023 9:35 pm, Csaba Raduly wrote:
> Hi Matthew,
...
> https://man7.org/linux/man-pages/man3/shm_open.3.html  says:
>
> For portable use, a shared memory object should be identified by
>         a name of the form /somename; that is, a null-terminated string
>         of up to NAME_MAX (i.e., 255) characters consisting of an initial
>         slash, followed by one or more characters, none of which are
>         slashes.
>
> Changing the shm_open call to
>
> shm_open("/123", O_CREAT | O_RDWR, 0666);
>
> returns 3 and sets errno to zero.
>
> Csaba

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