recv.2, send.2: Add cross references to pages with further info about ancillary data

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man2/recv.2 b/man2/recv.2
index 52db519752640feda4b4c36f059c37b438bc609b..1e6ad1668eecfa83b50473be013bfcedeb17e445 100644 (file)
--- a/man2/recv.2
+++ b/man2/recv.2
@@ -398,6 +398,11 @@ Ancillary data should be accessed only by the macros defined in
 .PP
 As an example, Linux uses this ancillary data mechanism to pass extended
 errors, IP options, or file descriptors over UNIX domain sockets.
+For further information on the use of ancillary data in various
+socket domains, see
+.BR unix (7)
+and
+.BR ip (7).
 .PP
 The
 .I msg_flags

diff --git a/man2/send.2 b/man2/send.2
index f69e851c675d958e06e35f5e67ce73210c8e7481..85d556d59854bef01b621bb7fbef145763e39ef2 100644 (file)
--- a/man2/send.2
+++ b/man2/send.2
@@ -303,6 +303,11 @@ per socket by the value in
 .IR /proc/sys/net/core/optmem_max ;
 see
 .BR socket (7).
+For further information on the use of ancillary data in various
+socket domains, see
+.BR unix (7)
+and
+.BR ip (7).
 .PP
 The
 .I msg_flags