Hello, this small patchset adds POSIX compliant behaviour on writes to the socket which was shutdowned with 'shutdown()' (both sides - local with SHUT_WR flag, peer - with SHUT_RD flag). According POSIX we must send SIGPIPE in such cases (but SIGPIPE is not send when MSG_NOSIGNAL is set). First patch is implemented in the same way as net/ipv4/tcp.c:tcp_sendmsg_locked(). It uses 'sk_stream_error()' function which handles EPIPE error. Another way is to use code from net/unix/af_unix.c:unix_stream_sendmsg() where same logic from 'sk_stream_error()' is implemented "from scratch", but it doesn't check 'sk_err' field. I think error from this field has more priority to be returned from syscall. So I guess it is better to reuse currently implemented 'sk_stream_error()' function. Test is also added. Head for this patchset is: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=9d0cd5d25f7d45bce01bbb3193b54ac24b3a60f3 Arseniy Krasnov (2): vsock: send SIGPIPE on write to shutdowned socket test/vsock: shutdowned socket test net/vmw_vsock/af_vsock.c | 3 + tools/testing/vsock/vsock_test.c | 138 +++++++++++++++++++++++++++++++ 2 files changed, 141 insertions(+) -- 2.25.1
