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arch/sim: Add AF_LOCAL support to host usrsock

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The sim host usrsock backend only accepted INET/NETLINK domains and
translated socket addresses through plain struct sockaddr. That prevents
simulated applications from using POSIX AF_LOCAL sockets through the
standard socket API when CONFIG_NET_USRSOCK is used.

Add AF_LOCAL address conversion for struct sockaddr_un, allow PF_LOCAL
sockets through usrsock, handle NuttX socket type flags, and poll host
descriptors from the sim usrsock work item so nonblocking
connect/read/write readiness is reported back to NuttX. Use
sockaddr_storage for native address translation so larger address
structures are not truncated.

Testing:

  - Host: Ubuntu 22.04 x86_64.

  - Board/config: sim:nsh with CONFIG_NET_USRSOCK=y and
    CONFIG_EXAMPLES_HELLO=y.

  - make clean && make -j16.

  - Ran a temporary hello example that connected to host AF_UNIX
    SOCK_STREAM and SOCK_SEQPACKET sockets through NuttX socket(),
    connect(), write(), and read(). Both received pong and printed
    "AF_LOCAL usrsock test passed".

Assisted-by: Claude:Claude-Fable-5
Signed-off-by: Lingao Meng <menglingao@xiaomi.com>
This commit is contained in:
Lingao Meng 2026-07-16 15:14:59 +08:00 • committed by Xiang Xiao
parent e84259cbcc
commit 3d20844903
4 changed files with 203 additions and 66 deletions
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10
net/usrsock/usrsock_sockif.c
View file

@ -103,10 +103,14 @@ static int usrsock_sockif_setup(FAR struct socket *psock)
int ret;
if (psock->s_domain != PF_INET && psock->s_domain != PF_INET6 &&
psock->s_domain != PF_NETLINK)
psock->s_domain != PF_NETLINK
#ifndef CONFIG_NET_LOCAL
&& psock->s_domain != PF_LOCAL
#endif
)
{
return -ENOTSUP; /* Only ipv4, ipv6 and netlink support the offload */
};
return -ENOTSUP; /* Only supported families can use usrsock offload */
}
/* Let the user socket logic handle the setup...
*