File: mksysctl_openbsd.pl

package info (click to toggle)
golang-1.12 1.12.7-3
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, experimental, sid
  • size: 113,080 kB
  • sloc: asm: 97,488; ansic: 8,245; perl: 2,243; sh: 1,895; xml: 623; python: 349; makefile: 127; cpp: 22; f90: 8; awk: 7
file content (265 lines) | stat: -rwxr-xr-x 5,328 bytes parent folder | download | duplicates (7)
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
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
#!/usr/bin/perl

# Copyright 2011 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.

#
# Parse the header files for OpenBSD and generate a Go usable sysctl MIB.
#
# Build a MIB with each entry being an array containing the level, type and
# a hash that will contain additional entries if the current entry is a node.
# We then walk this MIB and create a flattened sysctl name to OID hash.
#

use strict;

if($ENV{'GOARCH'} eq "" || $ENV{'GOOS'} eq "") {
	print STDERR "GOARCH or GOOS not defined in environment\n";
	exit 1;
}

my $debug = 0;
my %ctls = ();

my @headers = qw (
	sys/sysctl.h
	sys/socket.h
	sys/tty.h
	sys/malloc.h
	sys/mount.h
	sys/namei.h
	sys/sem.h
	sys/shm.h
	sys/vmmeter.h
	uvm/uvmexp.h
	uvm/uvm_param.h
	uvm/uvm_swap_encrypt.h
	ddb/db_var.h
	net/if.h
	net/if_pfsync.h
	net/pipex.h
	netinet/in.h
	netinet/icmp_var.h
	netinet/igmp_var.h
	netinet/ip_ah.h
	netinet/ip_carp.h
	netinet/ip_divert.h
	netinet/ip_esp.h
	netinet/ip_ether.h
	netinet/ip_gre.h
	netinet/ip_ipcomp.h
	netinet/ip_ipip.h
	netinet/pim_var.h
	netinet/tcp_var.h
	netinet/udp_var.h
	netinet6/in6.h
	netinet6/ip6_divert.h
	netinet6/pim6_var.h
	netinet/icmp6.h
	netmpls/mpls.h
);

my @ctls = qw (
	kern
	vm
	fs
	net
	#debug				# Special handling required
	hw
	#machdep			# Arch specific
	user
	ddb
	#vfs				# Special handling required
	fs.posix
	kern.forkstat
	kern.intrcnt
	kern.malloc
	kern.nchstats
	kern.seminfo
	kern.shminfo
	kern.timecounter
	kern.tty
	kern.watchdog
	net.bpf
	net.ifq
	net.inet
	net.inet.ah
	net.inet.carp
	net.inet.divert
	net.inet.esp
	net.inet.etherip
	net.inet.gre
	net.inet.icmp
	net.inet.igmp
	net.inet.ip
	net.inet.ip.ifq
	net.inet.ipcomp
	net.inet.ipip
	net.inet.mobileip
	net.inet.pfsync
	net.inet.pim
	net.inet.tcp
	net.inet.udp
	net.inet6
	net.inet6.divert
	net.inet6.ip6
	net.inet6.icmp6
	net.inet6.pim6
	net.inet6.tcp6
	net.inet6.udp6
	net.mpls
	net.mpls.ifq
	net.key
	net.pflow
	net.pfsync
	net.pipex
	net.rt
	vm.swapencrypt
	#vfsgenctl			# Special handling required
);

# Node name "fixups"
my %ctl_map = (
	"ipproto" => "net.inet",
	"net.inet.ipproto" => "net.inet",
	"net.inet6.ipv6proto" => "net.inet6",
	"net.inet6.ipv6" => "net.inet6.ip6",
	"net.inet.icmpv6" => "net.inet6.icmp6",
	"net.inet6.divert6" => "net.inet6.divert",
	"net.inet6.tcp6" => "net.inet.tcp",
	"net.inet6.udp6" => "net.inet.udp",
	"mpls" => "net.mpls",
	"swpenc" => "vm.swapencrypt"
);

# Node mappings
my %node_map = (
	"net.inet.ip.ifq" => "net.ifq",
	"net.inet.pfsync" => "net.pfsync",
	"net.mpls.ifq" => "net.ifq"
);

my $ctlname;
my %mib = ();
my %sysctl = ();
my $node;

sub debug() {
	print STDERR "$_[0]\n" if $debug;
}

# Walk the MIB and build a sysctl name to OID mapping.
sub build_sysctl() {
	my ($node, $name, $oid) = @_;
	my %node = %{$node};
	my @oid = @{$oid};

	foreach my $key (sort keys %node) {
		my @node = @{$node{$key}};
		my $nodename = $name.($name ne '' ? '.' : '').$key;
		my @nodeoid = (@oid, $node[0]);
		if ($node[1] eq 'CTLTYPE_NODE') {
			if (exists $node_map{$nodename}) {
				$node = \%mib;
				$ctlname = $node_map{$nodename};
				foreach my $part (split /\./, $ctlname) {
					$node = \%{@{$$node{$part}}[2]};
				}
			} else {
				$node = $node[2];
			}
			&build_sysctl($node, $nodename, \@nodeoid);
		} elsif ($node[1] ne '') {
			$sysctl{$nodename} = \@nodeoid;
		}
	}
}

foreach my $ctl (@ctls) {
	$ctls{$ctl} = $ctl;
}

# Build MIB
foreach my $header (@headers) {
	&debug("Processing $header...");
	open HEADER, "/usr/include/$header" ||
	    print STDERR "Failed to open $header\n";
	while (<HEADER>) {
		if ($_ =~ /^#define\s+(CTL_NAMES)\s+{/ ||
		    $_ =~ /^#define\s+(CTL_(.*)_NAMES)\s+{/ ||
		    $_ =~ /^#define\s+((.*)CTL_NAMES)\s+{/) {
			if ($1 eq 'CTL_NAMES') {
				# Top level.
				$node = \%mib;
			} else {
				# Node.
				my $nodename = lc($2);
				if ($header =~ /^netinet\//) {
					$ctlname = "net.inet.$nodename";
				} elsif ($header =~ /^netinet6\//) {
					$ctlname = "net.inet6.$nodename";
				} elsif ($header =~ /^net\//) {
					$ctlname = "net.$nodename";
				} else {
					$ctlname = "$nodename";
					$ctlname =~ s/^(fs|net|kern)_/$1\./;
				}
				if (exists $ctl_map{$ctlname}) {
					$ctlname = $ctl_map{$ctlname};
				}
				if (not exists $ctls{$ctlname}) {
					&debug("Ignoring $ctlname...");
					next;
				}

				# Walk down from the top of the MIB.
				$node = \%mib;
				foreach my $part (split /\./, $ctlname) {
					if (not exists $$node{$part}) {
						&debug("Missing node $part");
						$$node{$part} = [ 0, '', {} ];
					}
					$node = \%{@{$$node{$part}}[2]};
				}
			}

			# Populate current node with entries.
			my $i = -1;
			while (defined($_) && $_ !~ /^}/) {
				$_ = <HEADER>;
				$i++ if $_ =~ /{.*}/;
				next if $_ !~ /{\s+"(\w+)",\s+(CTLTYPE_[A-Z]+)\s+}/;
				$$node{$1} = [ $i, $2, {} ];
			}
		}
	}
	close HEADER;
}

&build_sysctl(\%mib, "", []);

print <<EOF;
// mksysctl_openbsd.pl
// Code generated by the command above; DO NOT EDIT.

// +build $ENV{'GOARCH'},$ENV{'GOOS'}

package unix;

type mibentry struct {
	ctlname string
	ctloid []_C_int
}

var sysctlMib = []mibentry {
EOF

foreach my $name (sort keys %sysctl) {
	my @oid = @{$sysctl{$name}};
	print "\t{ \"$name\", []_C_int{ ", join(', ', @oid), " } }, \n";
}

print <<EOF;
}
EOF