1 files changed, 39 insertions, 38 deletions
diff --git a/contrib/libpcap/pcap_get_selectable_fd.3pcap b/contrib/libpcap/pcap_get_selectable_fd.3pcap
index 7f43db398e61..ed333038a0a1 100644
--- a/contrib/libpcap/pcap_get_selectable_fd.3pcap
+++ b/contrib/libpcap/pcap_get_selectable_fd.3pcap
@@ -17,7 +17,7 @@
 .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 .\"
-.TH PCAP_GET_SELECTABLE_FD 3PCAP "25 July 2018"
+.TH PCAP_GET_SELECTABLE_FD 3PCAP "29 January 2020"
 .SH NAME
 pcap_get_selectable_fd \- get a file descriptor on which a select() can
 be done for a live capture
@@ -32,42 +32,42 @@ int pcap_get_selectable_fd(pcap_t *p);
 .ft
 .fi
 .SH DESCRIPTION
-.B pcap_get_selectable_fd()
+.BR pcap_get_selectable_fd ()
 returns, on UNIX, a file descriptor number for a file descriptor on
 which one can
 do a
-.BR select(2) ,
-.BR poll(2) ,
-.BR epoll_wait(2) ,
-.BR kevent() ,
+.BR select (2),
+.BR poll (2),
+.BR epoll_wait (2),
+.BR kevent (2),
 or other such call
 to wait for it to be possible to read packets without blocking, if such
 a descriptor exists, or
-.BR PCAP_ERROR ,
+.BR \-1 ,
 if no such descriptor exists.
 .PP
 Some network devices opened with
-.B pcap_create(3PCAP)
+.BR pcap_create (3PCAP)
 and
-.BR pcap_activate(3PCAP) ,
+.BR pcap_activate (3PCAP),
 or with
-.BR pcap_open_live(3PCAP) ,
+.BR pcap_open_live (3PCAP),
 do not support those calls (for example, regular network devices on
 FreeBSD 4.3 and 4.4, and Endace DAG devices), so
-.B PCAP_ERROR
+.B \-1
 is returned for
 those devices.  In that case, those calls must be given a timeout less
 than or equal to the timeout returned by
-.B pcap_get_required_select_timeout(3PCAP)
+.BR pcap_get_required_select_timeout (3PCAP)
 for the device for which
-.B pcap_get_selectable_fd()
+.BR pcap_get_selectable_fd ()
 returned
-.BR PCAP_ERROR ,
+.BR \-1 ,
 the device must be put in non-blocking mode with a call to
-.BR \%pcap_setnonblock(3PCAP) ,
+.BR \%pcap_setnonblock (3PCAP),
 and an attempt must always be made to read packets from the device
 when the call returns.  If
-.B \%pcap_get_required_select_timeout()
+.BR \%pcap_get_required_select_timeout ()
 returns
 .BR NULL ,
 it is not possible to wait for packets to arrive on the device in an
@@ -76,9 +76,9 @@ event loop.
 Note that a device on which a read can be done without blocking may,
 on some platforms, not have any packets to read if the packet buffer
 timeout has expired.  A call to
-.B pcap_dispatch(3PCAP)
+.BR pcap_dispatch (3PCAP)
 or
-.B pcap_next_ex(3PCAP)
+.BR pcap_next_ex (3PCAP)
 will return 0 in this case, but will not block.
 .PP
 Note that in:
@@ -91,18 +91,18 @@ OpenBSD prior to OpenBSD 2.4;
 .IP
 Mac OS X prior to Mac OS X 10.7;
 .PP
-.BR select() ,
-.BR poll() ,
+.BR select (),
+.BR poll (),
 and
-.B kevent()
+.BR kevent ()
 do not work correctly on BPF devices;
-.B pcap_get_selectable_fd()
+.BR pcap_get_selectable_fd ()
 will return a file descriptor on most of those versions (the exceptions
 being FreeBSD 4.3 and 4.4), but a simple
-.BR select() ,
-.BR poll() ,
+.BR select (),
+.BR poll (),
 or
-.B kevent()
+.BR kevent ()
 call will not indicate that the descriptor is readable until a full
 buffer's worth of packets is received, even if the packet timeout
 expires before then.  To work around this, code that uses
@@ -119,33 +119,34 @@ work correctly on BPF devices, so the workaround isn't necessary,
 although it does no harm.)
 .PP
 Note also that
-.B poll()
+.BR poll ()
 and
-.B kevent()
+.BR kevent ()
 doesn't work on character special files, including BPF devices, in Mac
 OS X 10.4 and 10.5, so, while
-.B select()
+.BR select ()
 can be used on the descriptor returned by
-.BR pcap_get_selectable_fd() ,
-.B poll()
+.BR pcap_get_selectable_fd (),
+.BR poll ()
 and
-.B kevent()
+.BR kevent ()
 cannot be used on it those versions of Mac OS X.
-.BR poll() ,
+.BR poll (),
 but not
-.BR kevent() ,
+.BR kevent (),
 works on that descriptor in Mac OS X releases prior to
 10.4;
-.B poll()
+.BR poll ()
 and
-.B kevent()
+.BR kevent ()
 work on that descriptor in Mac OS X 10.6 and later.
 .PP
-.B pcap_get_selectable_fd()
+.BR pcap_get_selectable_fd ()
 is not available on Windows.
 .SH RETURN VALUE
 A selectable file descriptor is returned if one exists; otherwise,
-.B PCAP_ERROR
+.B \-1
 is returned.
 .SH SEE ALSO
-pcap(3PCAP), kqueue(2)
+.BR pcap (3PCAP),
+.BR kqueue (2)