On 23.05.24 16:55, Stefano Garzarella wrote:
On macOS passing `-s /tmp/vhost.socket` parameter to the vhost-user-blk
application, the bind was done on `/tmp/vhost.socke` pathname,
missing the last character.

This sounds like one of the portability problems described in the
unix(7) manpage:

    Pathname sockets
        When  binding  a socket to a pathname, a few rules should
        be observed for maximum portability and ease of coding:

        •  The pathname in sun_path should be null-terminated.

        •  The length of the pathname, including the  terminating
           null byte, should not exceed the size of sun_path.

        •  The  addrlen  argument  that  describes  the enclosing
           sockaddr_un structure should have a value of at least:

               offsetof(struct sockaddr_un, sun_path) +
               strlen(addr.sun_path)+1

           or,  more  simply,  addrlen  can   be   specified   as
           sizeof(struct sockaddr_un).

So let's follow the last advice and simplify the code as well.

Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org>
Tested-by: Philippe Mathieu-Daudé <phi...@linaro.org>
Acked-by: Stefan Hajnoczi <stefa...@redhat.com>
Signed-off-by: Stefano Garzarella <sgarz...@redhat.com>
---

Reviewed-by: David Hildenbrand <da...@redhat.com>

--
Cheers,

David / dhildenb


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