[PATCH 5/8] man/man7/unix.7: SOCK_RAW is accepted as an alias for SOCK_DGRAM

["Günther Noack" <gnoack3000@gmail.com>]

unix_create() in linux.git net/unix/af_unix.c does:

	case SOCK_RAW:
		sock->type = SOCK_DGRAM;
		fallthrough;
	case SOCK_DGRAM:

so both socket(AF_UNIX, SOCK_RAW, 0) and the equivalent socketpair()
invocation succeed and create datagram sockets.

Cc: Kuniyuki Iwashima <kuniyu@google.com>
Assisted-by: LLM
Signed-off-by: Günther Noack <gnoack3000@gmail.com>
---

Notes:
    For completeness;
    
    It is more complete to spell it out, but on the other hand, people
    should not be passing the SOCK_RAW type when they really mean
    SOCK_DGRAM.  I'm on the fence about whether this is useful.  If you
    want to omit this one, it also feels reasonable.

 man/man7/unix.7 | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/man/man7/unix.7 b/man/man7/unix.7
index 232fdbf4c3cd..29843235def0 100644
--- a/man/man7/unix.7
+++ b/man/man7/unix.7
@@ -39,6 +39,11 @@ and (since Linux 2.6.4)
 for a sequenced-packet socket that is connection-oriented,
 preserves message boundaries,
 and delivers messages in the order that they were sent.
+On Linux,
+.B SOCK_RAW
+.\" unix_create() in net/unix/af_unix.c
+is also accepted as an alias for
+.BR SOCK_DGRAM .
 .P
 UNIX domain sockets support passing file descriptors or process credentials
 to other processes using ancillary data.
-- 
2.56.0