This file is indexed.

/usr/sbin/ibfindnodesusing is in infiniband-diags 1.6.6-1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
#!/usr/bin/perl
#
# Copyright (C) 2001-2003 The Regents of the University of California.
# Copyright (c) 2006 The Regents of the University of California.
# Copyright (c) 2007-2008 Voltaire, Inc. All rights reserved.
#
# Produced at Lawrence Livermore National Laboratory.
# Written by Ira Weiny <weiny2@llnl.gov>
#            Jim Garlick <garlick@llnl.gov>
#            Albert Chu <chu11@llnl.gov>
#
# This software is available to you under a choice of one of two
# licenses.  You may choose to be licensed under the terms of the GNU
# General Public License (GPL) Version 2, available from the file
# COPYING in the main directory of this source tree, or the
# OpenIB.org BSD license below:
#
#     Redistribution and use in source and binary forms, with or
#     without modification, are permitted provided that the following
#     conditions are met:
#
#      - Redistributions of source code must retain the above
#        copyright notice, this list of conditions and the following
#        disclaimer.
#
#      - Redistributions in binary form must reproduce the above
#        copyright notice, this list of conditions and the following
#        disclaimer in the documentation and/or other materials
#        provided with the distribution.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#

use strict;

use Getopt::Std;
use IBswcountlimits;
my $ca_name = "";
my $ca_port = "";

# =========================================================================
#
sub get_hosts_routed
{
	my $sw_guid      = $_[0];
	my $sw_port      = $_[1];
	my @hosts        = undef;
	my $extra_params = get_ca_name_port_param_string($ca_name, $ca_port);

	if ($sw_guid eq "") { return (@hosts); }

	my $data = `ibroute $extra_params -G $sw_guid`;
	my @lines = split("\n", $data);
	foreach my $line (@lines) {
		if ($line =~ /\w+\s+(\d+)\s+:\s+\(Channel Adapter.*:\s+'(.*)'\)/) {
			if ($1 == $sw_port) {
				push @hosts, $2;
			}
		}
	}

	return (@hosts);
}

# =========================================================================
#
sub usage_and_exit
{
	my $prog = $_[0];
	print
"Usage: $prog [-R -C <ca_name> -P <ca_port>] <switch_guid|switch_name> <port>\n";
	print "   find a list of nodes which are routed through switch:port\n";
	print "   -R Recalculate ibnetdiscover information\n";
	print "   -C <ca_name> use selected Channel Adaptor name for queries\n";
	print "   -P <ca_port> use selected channel adaptor port for queries\n";
	exit 2;
}

my $argv0          = `basename $0`;
my $regenerate_map = undef;
chomp $argv0;
if (!getopts("hRC:P:"))          { usage_and_exit $argv0; }
if (defined $Getopt::Std::opt_h) { usage_and_exit $argv0; }
if (defined $Getopt::Std::opt_R) { $regenerate_map = $Getopt::Std::opt_R; }
if (defined $Getopt::Std::opt_C) { $ca_name        = $Getopt::Std::opt_C; }
if (defined $Getopt::Std::opt_P) { $ca_port        = $Getopt::Std::opt_P; }

my $target_switch = format_guid($ARGV[0]);
my $target_port   = $ARGV[1];

get_link_ends($regenerate_map, $ca_name, $ca_port);

if ($target_switch eq "" || $target_port eq "") {
	usage_and_exit $argv0;
}

# sortn:
#
# sort a group of alphanumeric strings by the last group of digits on
# those strings, if such exists (good for numerically suffixed host lists)
#
sub sortn
{
	map { $$_[0] }
	  sort { ($$a[1] || 0) <=> ($$b[1] || 0) } map { [$_, /(\d*)$/] } @_;
}

# comp2():
#
# takes a list of names and returns a hash of arrays, indexed by name prefix,
# each containing a list of numerical ranges describing the initial list.
#
# e.g.: %hash = comp2(lx01,lx02,lx03,lx05,dev0,dev1,dev21)
#       will return:
#       $hash{"lx"}  = ["01-03", "05"]
#       $hash{"dev"} = ["0-1", "21"]
#
sub comp2
{
	my (%i) = ();
	my (%s) = ();

	# turn off warnings here to avoid perl complaints about
	# uninitialized values for members of %i and %s
	local ($^W) = 0;
	push(
		@{
			$s{$$_[0]}[
			  (
				  $s{$$_[0]}[$i{$$_[0]}][$#{$s{$$_[0]}[$i{$$_[0]}]}] ==
				    ($$_[1] - 1)
			  ) ? $i{$$_[0]} : ++$i{$$_[0]}
			]
		  },
		($$_[1])
	) for map { [/(.*?)(\d*)$/] } sortn(@_);

	for my $key (keys %s) {
		@{$s{$key}} =
		  map { $#$_ > 0 ? "$$_[0]-$$_[$#$_]" : @{$_} } @{$s{$key}};
	}

	return %s;
}

sub compress_hostlist
{
	my %rng  = comp2(@_);
	my @list = ();

	local $" = ",";

	foreach my $k (keys %rng) {
		@{$rng{$k}} = map { "$k$_" } @{$rng{$k}};
	}
	@list = map { @{$rng{$_}} } sort keys %rng;
	return "@list";
}

# =========================================================================
#
sub main
{
	my $found_switch = undef;
	my $cache_file = get_cache_file($ca_name, $ca_port);
	open IBNET_TOPO, "<$cache_file" or die "Failed to open ibnet topology\n";
	my $in_switch   = "no";
	my $switch_guid = "";
	my $desc        = undef;
	my %ports       = undef;
	while (my $line = <IBNET_TOPO>) {

		if ($line =~ /^Switch.*\"S-(.*)\"\s+# (.*) port.*/) {
			$switch_guid = $1;
			$desc        = $2;
			if ("0x$switch_guid" eq $target_switch
				|| $desc =~ /.*$target_switch\s+.*/)
			{
				$found_switch = "yes";
				goto FOUND;
			}
		}
		if ($line =~ /^Ca.*/ || $line =~ /^Rt.*/) { $in_switch = "no"; }

		if ($line =~ /^\[(\d+)\].*/ && $in_switch eq "yes") {
			$ports{$1} = $line;
		}

	}

	FOUND:
	close IBNET_TOPO;
	if (!$found_switch) {
		print "Switch \"$target_switch\" not found\n";
		print "   Try running with the \"-R\" or \"-P\" option.\n";
		exit 1;
	}

	$switch_guid = "0x$switch_guid";

	my $hr          = $IBswcountlimits::link_ends{$switch_guid}{$target_port};
	my $rem_sw_guid = $hr->{rem_guid};
	my $rem_sw_port = $hr->{rem_port};
	my $rem_sw_desc = $hr->{rem_desc};

	my @hosts = undef;
	@hosts = get_hosts_routed($switch_guid, $target_port);

	my $hosts = compress_hostlist(@hosts);
	@hosts = split ",", $hosts;
	print
"$switch_guid $target_port ($desc)  ==>>  $rem_sw_guid $rem_sw_port ($rem_sw_desc)\n";
	print "@hosts\n\n";

	@hosts = get_hosts_routed($rem_sw_guid, $rem_sw_port);

	$hosts = compress_hostlist(@hosts);
	@hosts = split ",", $hosts;
	print
"$switch_guid $target_port ($desc)  <<==  $rem_sw_guid $rem_sw_port ($rem_sw_desc)\n";
	print "@hosts\n";
}
main