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Minor markup tweaks.

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This commit is contained in:
uwe 2019-08-04 01:22:49 +00:00
parent b567307faa
commit a4a4fa9898
1 changed files with 8 additions and 6 deletions
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14
lib/libc/sys/recv.2
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@ -1,4 +1,4 @@
.\" $NetBSD: recv.2,v 1.38 2018/03/19 16:26:26 roy Exp $
.\" $NetBSD: recv.2,v 1.39 2019/08/04 01:22:49 uwe Exp $
.\"
.\" Copyright (c) 1983, 1990, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
@ -75,7 +75,7 @@ The
call can be used to receive multiple messages in the same call using an array of
.Fa mmsghdr
elements with the following form, as defined in
.Ao Pa sys/socket.h Ac :
.In sys/socket.h :
.Bd -literal
struct mmsghdr {
struct msghdr msg_hdr; /* the message to be sent */
@ -173,12 +173,13 @@ The
argument to a recv call is formed by
.Em or Ap ing
one or more of the values:
.Bl -column MSG_CMSG_CLOEXEC -offset indent
.Bl -column ".Dv MSG_CMSG_CLOEXEC" -offset indent
.It Dv MSG_CMSG_CLOEXEC Ta set the close on exec property for passed file descriptors
.It Dv MSG_OOB Ta process out-of-band data
.It Dv MSG_PEEK Ta peek at incoming message
.It Dv MSG_WAITALL Ta wait for full request or error
.El
.Pp
The
.Dv MSG_OOB
flag requests receipt of out-of-band data
@ -205,7 +206,7 @@ call uses a
.Fa msghdr
structure to minimize the number of directly supplied parameters.
This structure has the following form, as defined in
.Ao Pa sys/socket.h Ac :
.In sys/socket.h :
.Bd -literal
struct msghdr {
void *msg_name; /* optional address */
@ -253,7 +254,7 @@ struct cmsghdr {
As an example, one could use this to learn of changes in the data-stream
in XNS/SPP, or in ISO, to obtain user-connection-request data by requesting
a recvmsg with no data buffer provided immediately after an
.Fn accept
.Xr accept 2
call.
.Pp
Open file descriptors are now passed as ancillary data for
@ -317,7 +318,8 @@ address space.
The receive was interrupted by delivery of a signal before
any data were available.
.It Bq Er EINVAL
The total length of the I/O is more than can be expressed by the ssize_t
The total length of the I/O is more than can be expressed by the
.Vt ssize_t
return value.
.It Bq Er ENOBUFS
A message was not delivered because it would have overflowed the buffer.