56 lines
1.6 KiB
Diff
56 lines
1.6 KiB
Diff
From 9ea43c6c97d3653cb58c1934f8770b951917bf9a Mon Sep 17 00:00:00 2001
|
|
From: rpm-build <rpm-build>
|
|
Date: Mon, 20 Oct 2014 13:26:38 +0200
|
|
Subject: [PATCH 7/8] Introduce -nn option
|
|
|
|
This changes the semantics on -n option so only namelookups are skipped. Port
|
|
numbers *are* translated to their string representations. Option -nn then has
|
|
the same semantics as -n had originally.
|
|
---
|
|
addrtoname.c | 4 ++--
|
|
tcpdump.1.in | 6 +++++-
|
|
2 files changed, 7 insertions(+), 3 deletions(-)
|
|
|
|
diff --git a/addrtoname.c b/addrtoname.c
|
|
index 949acb7..9dd78d8 100644
|
|
--- a/addrtoname.c
|
|
+++ b/addrtoname.c
|
|
@@ -810,7 +810,7 @@ init_servarray(netdissect_options *ndo)
|
|
|
|
while (table->name)
|
|
table = table->nxt;
|
|
- if (ndo->ndo_nflag) {
|
|
+ if (ndo->ndo_nflag > 1) {
|
|
(void)snprintf(buf, sizeof(buf), "%d", port);
|
|
table->name = strdup(buf);
|
|
} else
|
|
@@ -1233,7 +1233,7 @@ init_addrtoname(netdissect_options *ndo, uint32_t localnet, uint32_t mask)
|
|
f_localnet = localnet;
|
|
f_netmask = mask;
|
|
}
|
|
- if (ndo->ndo_nflag)
|
|
+ if (ndo->ndo_nflag > 1)
|
|
/*
|
|
* Simplest way to suppress names.
|
|
*/
|
|
diff --git a/tcpdump.1.in b/tcpdump.1.in
|
|
index ca5cff2..c711a24 100644
|
|
--- a/tcpdump.1.in
|
|
+++ b/tcpdump.1.in
|
|
@@ -547,7 +547,11 @@ Use \fIsecret\fP as a shared secret for validating the digests found in
|
|
TCP segments with the TCP-MD5 option (RFC 2385), if present.
|
|
.TP
|
|
.B \-n
|
|
-Don't convert addresses (i.e., host addresses, port numbers, etc.) to names.
|
|
+Don't convert host addresses to names. This can be used to avoid
|
|
+DNS lookups.
|
|
+.TP
|
|
+.B \-nn
|
|
+Don't convert protocol and port numbers etc. to names either.
|
|
.TP
|
|
.B \-N
|
|
Don't print domain name qualification of host names.
|
|
--
|
|
2.9.3
|
|
|