Scott Baker | 1fe7273 | 2019-10-21 10:58:51 -0700 | [diff] [blame] | 1 | #!/usr/bin/env perl |
| 2 | |
| 3 | # Copyright 2011 The Go Authors. All rights reserved. |
| 4 | # Use of this source code is governed by a BSD-style |
| 5 | # license that can be found in the LICENSE file. |
| 6 | |
| 7 | # |
| 8 | # Parse the header files for OpenBSD and generate a Go usable sysctl MIB. |
| 9 | # |
| 10 | # Build a MIB with each entry being an array containing the level, type and |
| 11 | # a hash that will contain additional entries if the current entry is a node. |
| 12 | # We then walk this MIB and create a flattened sysctl name to OID hash. |
| 13 | # |
| 14 | |
| 15 | use strict; |
| 16 | |
| 17 | if($ENV{'GOARCH'} eq "" || $ENV{'GOOS'} eq "") { |
| 18 | print STDERR "GOARCH or GOOS not defined in environment\n"; |
| 19 | exit 1; |
| 20 | } |
| 21 | |
| 22 | my $debug = 0; |
| 23 | my %ctls = (); |
| 24 | |
| 25 | my @headers = qw ( |
| 26 | sys/sysctl.h |
| 27 | sys/socket.h |
| 28 | sys/tty.h |
| 29 | sys/malloc.h |
| 30 | sys/mount.h |
| 31 | sys/namei.h |
| 32 | sys/sem.h |
| 33 | sys/shm.h |
| 34 | sys/vmmeter.h |
| 35 | uvm/uvmexp.h |
| 36 | uvm/uvm_param.h |
| 37 | uvm/uvm_swap_encrypt.h |
| 38 | ddb/db_var.h |
| 39 | net/if.h |
| 40 | net/if_pfsync.h |
| 41 | net/pipex.h |
| 42 | netinet/in.h |
| 43 | netinet/icmp_var.h |
| 44 | netinet/igmp_var.h |
| 45 | netinet/ip_ah.h |
| 46 | netinet/ip_carp.h |
| 47 | netinet/ip_divert.h |
| 48 | netinet/ip_esp.h |
| 49 | netinet/ip_ether.h |
| 50 | netinet/ip_gre.h |
| 51 | netinet/ip_ipcomp.h |
| 52 | netinet/ip_ipip.h |
| 53 | netinet/pim_var.h |
| 54 | netinet/tcp_var.h |
| 55 | netinet/udp_var.h |
| 56 | netinet6/in6.h |
| 57 | netinet6/ip6_divert.h |
| 58 | netinet6/pim6_var.h |
| 59 | netinet/icmp6.h |
| 60 | netmpls/mpls.h |
| 61 | ); |
| 62 | |
| 63 | my @ctls = qw ( |
| 64 | kern |
| 65 | vm |
| 66 | fs |
| 67 | net |
| 68 | #debug # Special handling required |
| 69 | hw |
| 70 | #machdep # Arch specific |
| 71 | user |
| 72 | ddb |
| 73 | #vfs # Special handling required |
| 74 | fs.posix |
| 75 | kern.forkstat |
| 76 | kern.intrcnt |
| 77 | kern.malloc |
| 78 | kern.nchstats |
| 79 | kern.seminfo |
| 80 | kern.shminfo |
| 81 | kern.timecounter |
| 82 | kern.tty |
| 83 | kern.watchdog |
| 84 | net.bpf |
| 85 | net.ifq |
| 86 | net.inet |
| 87 | net.inet.ah |
| 88 | net.inet.carp |
| 89 | net.inet.divert |
| 90 | net.inet.esp |
| 91 | net.inet.etherip |
| 92 | net.inet.gre |
| 93 | net.inet.icmp |
| 94 | net.inet.igmp |
| 95 | net.inet.ip |
| 96 | net.inet.ip.ifq |
| 97 | net.inet.ipcomp |
| 98 | net.inet.ipip |
| 99 | net.inet.mobileip |
| 100 | net.inet.pfsync |
| 101 | net.inet.pim |
| 102 | net.inet.tcp |
| 103 | net.inet.udp |
| 104 | net.inet6 |
| 105 | net.inet6.divert |
| 106 | net.inet6.ip6 |
| 107 | net.inet6.icmp6 |
| 108 | net.inet6.pim6 |
| 109 | net.inet6.tcp6 |
| 110 | net.inet6.udp6 |
| 111 | net.mpls |
| 112 | net.mpls.ifq |
| 113 | net.key |
| 114 | net.pflow |
| 115 | net.pfsync |
| 116 | net.pipex |
| 117 | net.rt |
| 118 | vm.swapencrypt |
| 119 | #vfsgenctl # Special handling required |
| 120 | ); |
| 121 | |
| 122 | # Node name "fixups" |
| 123 | my %ctl_map = ( |
| 124 | "ipproto" => "net.inet", |
| 125 | "net.inet.ipproto" => "net.inet", |
| 126 | "net.inet6.ipv6proto" => "net.inet6", |
| 127 | "net.inet6.ipv6" => "net.inet6.ip6", |
| 128 | "net.inet.icmpv6" => "net.inet6.icmp6", |
| 129 | "net.inet6.divert6" => "net.inet6.divert", |
| 130 | "net.inet6.tcp6" => "net.inet.tcp", |
| 131 | "net.inet6.udp6" => "net.inet.udp", |
| 132 | "mpls" => "net.mpls", |
| 133 | "swpenc" => "vm.swapencrypt" |
| 134 | ); |
| 135 | |
| 136 | # Node mappings |
| 137 | my %node_map = ( |
| 138 | "net.inet.ip.ifq" => "net.ifq", |
| 139 | "net.inet.pfsync" => "net.pfsync", |
| 140 | "net.mpls.ifq" => "net.ifq" |
| 141 | ); |
| 142 | |
| 143 | my $ctlname; |
| 144 | my %mib = (); |
| 145 | my %sysctl = (); |
| 146 | my $node; |
| 147 | |
| 148 | sub debug() { |
| 149 | print STDERR "$_[0]\n" if $debug; |
| 150 | } |
| 151 | |
| 152 | # Walk the MIB and build a sysctl name to OID mapping. |
| 153 | sub build_sysctl() { |
| 154 | my ($node, $name, $oid) = @_; |
| 155 | my %node = %{$node}; |
| 156 | my @oid = @{$oid}; |
| 157 | |
| 158 | foreach my $key (sort keys %node) { |
| 159 | my @node = @{$node{$key}}; |
| 160 | my $nodename = $name.($name ne '' ? '.' : '').$key; |
| 161 | my @nodeoid = (@oid, $node[0]); |
| 162 | if ($node[1] eq 'CTLTYPE_NODE') { |
| 163 | if (exists $node_map{$nodename}) { |
| 164 | $node = \%mib; |
| 165 | $ctlname = $node_map{$nodename}; |
| 166 | foreach my $part (split /\./, $ctlname) { |
| 167 | $node = \%{@{$$node{$part}}[2]}; |
| 168 | } |
| 169 | } else { |
| 170 | $node = $node[2]; |
| 171 | } |
| 172 | &build_sysctl($node, $nodename, \@nodeoid); |
| 173 | } elsif ($node[1] ne '') { |
| 174 | $sysctl{$nodename} = \@nodeoid; |
| 175 | } |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | foreach my $ctl (@ctls) { |
| 180 | $ctls{$ctl} = $ctl; |
| 181 | } |
| 182 | |
| 183 | # Build MIB |
| 184 | foreach my $header (@headers) { |
| 185 | &debug("Processing $header..."); |
| 186 | open HEADER, "/usr/include/$header" || |
| 187 | print STDERR "Failed to open $header\n"; |
| 188 | while (<HEADER>) { |
| 189 | if ($_ =~ /^#define\s+(CTL_NAMES)\s+{/ || |
| 190 | $_ =~ /^#define\s+(CTL_(.*)_NAMES)\s+{/ || |
| 191 | $_ =~ /^#define\s+((.*)CTL_NAMES)\s+{/) { |
| 192 | if ($1 eq 'CTL_NAMES') { |
| 193 | # Top level. |
| 194 | $node = \%mib; |
| 195 | } else { |
| 196 | # Node. |
| 197 | my $nodename = lc($2); |
| 198 | if ($header =~ /^netinet\//) { |
| 199 | $ctlname = "net.inet.$nodename"; |
| 200 | } elsif ($header =~ /^netinet6\//) { |
| 201 | $ctlname = "net.inet6.$nodename"; |
| 202 | } elsif ($header =~ /^net\//) { |
| 203 | $ctlname = "net.$nodename"; |
| 204 | } else { |
| 205 | $ctlname = "$nodename"; |
| 206 | $ctlname =~ s/^(fs|net|kern)_/$1\./; |
| 207 | } |
| 208 | if (exists $ctl_map{$ctlname}) { |
| 209 | $ctlname = $ctl_map{$ctlname}; |
| 210 | } |
| 211 | if (not exists $ctls{$ctlname}) { |
| 212 | &debug("Ignoring $ctlname..."); |
| 213 | next; |
| 214 | } |
| 215 | |
| 216 | # Walk down from the top of the MIB. |
| 217 | $node = \%mib; |
| 218 | foreach my $part (split /\./, $ctlname) { |
| 219 | if (not exists $$node{$part}) { |
| 220 | &debug("Missing node $part"); |
| 221 | $$node{$part} = [ 0, '', {} ]; |
| 222 | } |
| 223 | $node = \%{@{$$node{$part}}[2]}; |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | # Populate current node with entries. |
| 228 | my $i = -1; |
| 229 | while (defined($_) && $_ !~ /^}/) { |
| 230 | $_ = <HEADER>; |
| 231 | $i++ if $_ =~ /{.*}/; |
| 232 | next if $_ !~ /{\s+"(\w+)",\s+(CTLTYPE_[A-Z]+)\s+}/; |
| 233 | $$node{$1} = [ $i, $2, {} ]; |
| 234 | } |
| 235 | } |
| 236 | } |
| 237 | close HEADER; |
| 238 | } |
| 239 | |
| 240 | &build_sysctl(\%mib, "", []); |
| 241 | |
| 242 | print <<EOF; |
| 243 | // mksysctl_openbsd.pl |
| 244 | // Code generated by the command above; DO NOT EDIT. |
| 245 | |
| 246 | // +build $ENV{'GOARCH'},$ENV{'GOOS'} |
| 247 | |
| 248 | package unix; |
| 249 | |
| 250 | type mibentry struct { |
| 251 | ctlname string |
| 252 | ctloid []_C_int |
| 253 | } |
| 254 | |
| 255 | var sysctlMib = []mibentry { |
| 256 | EOF |
| 257 | |
| 258 | foreach my $name (sort keys %sysctl) { |
| 259 | my @oid = @{$sysctl{$name}}; |
| 260 | print "\t{ \"$name\", []_C_int{ ", join(', ', @oid), " } }, \n"; |
| 261 | } |
| 262 | |
| 263 | print <<EOF; |
| 264 | } |
| 265 | EOF |