[PATCH v2] recv.2: Document MSG_CMSG_CLOEXEC as returned in msg_flags

[Matthew House <mattlloydhouse@gmail.com>]

Signed-off-by: Matthew House <mattlloydhouse@gmail.com>
---
Clarified that the argument comes from the recvmsg() call. It feels a bit
redundant to name recvmsg() again here, given that the list of flags is
immediately preceded by, "The msg_flags field in the msghdr is set on
return of recvmsg(). It can contain several flags: [...]" But I'll let you
be the judge of that.

 man2/recv.2 | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/man2/recv.2 b/man2/recv.2
index 660c103fb..1cd9f3e1b 100644
--- a/man2/recv.2
+++ b/man2/recv.2
@@ -412,6 +412,15 @@ is returned to indicate that expedited or out-of-band data was received.
 .B MSG_ERRQUEUE
 indicates that no data was received but an extended error from the socket
 error queue.
+.TP
+.BR MSG_CMSG_CLOEXEC " (since Linux 2.6.23)"
+.\" commit 4a19542e5f694cd408a32c3d9dc593ba9366e2d7
+indicates that
+.B MSG_CMSG_CLOEXEC
+was specified in the
+.I flags
+argument of
+.BR recvmsg ().
 .SH RETURN VALUE
 These calls return the number of bytes received, or \-1
 if an error occurred.
-- 
2.41.0