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52 lines
2.3 KiB
52 lines
2.3 KiB
7 years ago
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Adapted version of
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commit 65801d02a482befd2745c792d6596ec75d434934
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Author: Dan Williams <dcbw@redhat.com>
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Date: Mon Apr 10 12:35:18 2017 -0500
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iptables-restore.8: document -w/-W options
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Fixes: 999eaa241212 ("iptables-restore: support acquiring the lock.")
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Signed-off-by: Dan Williams <dcbw@redhat.com>
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Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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diff -up iptables-1.4.21/iptables/iptables-restore.8.in.restore_wait_man iptables-1.4.21/iptables/iptables-restore.8.in
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--- iptables-1.4.21/iptables/iptables-restore.8.in.restore_wait_man 2017-04-20 17:33:23.386401192 +0200
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+++ iptables-1.4.21/iptables/iptables-restore.8.in 2017-04-20 17:35:13.562713997 +0200
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@@ -23,9 +23,11 @@ iptables-restore \(em Restore IP Tables
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.P
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ip6tables-restore \(em Restore IPv6 Tables
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.SH SYNOPSIS
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-\fBiptables\-restore\fP [\fB\-chntvV\fP] [\fB\-M\fP \fImodprobe\fP]
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+\fBiptables\-restore\fP [\fB\-chntvV\fP] [\fB\-w\fP \fIsecs\fP]
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++[\fB\-W\fP \fIusecs\fP] [\fB\-M\fP \fImodprobe\fP]
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.P
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-\fBip6tables\-restore\fP [\fB\-chntvV\fP] [\fB\-M\fP \fImodprobe\fP]
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+\fBip6tables\-restore\fP [\fB\-chntvV\fP] [\fB\-w\fP \fIsecs\fP]
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++[\fB\-W\fP \fIusecs\fP] [\fB\-M\fP \fImodprobe\fP]
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[\fB\-T\fP \fIname\fP]
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.SH DESCRIPTION
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.PP
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@@ -54,6 +56,21 @@ Print additional debug info during rules
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\fB\-V\fP, \fB\-\-version\fP
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Print the program version number.
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.TP
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+\fB\-w\fP, \fB\-\-wait\fP [\fIseconds\fP]
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+Wait for the xtables lock.
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+To prevent multiple instances of the program from running concurrently,
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+an attempt will be made to obtain an exclusive lock at launch. By default,
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+the program will exit if the lock cannot be obtained. This option will
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+make the program wait (indefinitely or for optional \fIseconds\fP) until
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+the exclusive lock can be obtained.
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+.TP
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+\fB\-W\fP, \fB\-\-wait-interval\fP \fImicroseconds\fP
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+Interval to wait per each iteration.
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+When running latency sensitive applications, waiting for the xtables lock
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+for extended durations may not be acceptable. This option will make each
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+iteration take the amount of time specified. The default interval is
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+1 second. This option only works with \fB\-w\fP.
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+.TP
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\fB\-M\fP, \fB\-\-modprobe\fP \fImodprobe_program\fP
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Specify the path to the modprobe program. By default, iptables-restore will
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inspect /proc/sys/kernel/modprobe to determine the executable's path.
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