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32fe38646a
Cygwin is not a supported build platform for libvirt and has no testing coverage in our CI systems. Stop pretending the code is usable and remove it so there is less to port to Meson. Reviewed-by: Pavel Hrdina <phrdina@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
145 lines
4.2 KiB
Perl
Executable File
145 lines
4.2 KiB
Perl
Executable File
#!/usr/bin/env perl
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#
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# Generate code for an XDR protocol, optionally applying
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# fixups to the glibc rpcgen code so that it compiles
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# with warnings turned on.
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#
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# This code is evil. Arguably better would be just to compile
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# without -Werror. Update: The IXDR_PUT_LONG replacements are
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# actually fixes for 64 bit, so this file is necessary. Arguably
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# so is the type-punning fix.
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#
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# Copyright (C) 2007, 2011-2013 Red Hat, Inc.
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Richard Jones <rjones@redhat.com>
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use strict;
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my $in_function = 0;
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my @function = ();
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my $rpcgen = shift;
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my $mode = shift;
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my $xdrdef = shift;
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my $target = shift;
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unlink $target;
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if ($rpcgen =~ /portable-rpcgen/) {
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$rpcgen = "$rpcgen -o -";
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}
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open RPCGEN, "-|", "$rpcgen $mode $xdrdef"
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or die "cannot run $rpcgen $mode $xdrdef: $!";
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open TARGET, ">$target"
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or die "cannot create $target: $!";
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my $fixup = $^O eq "linux" || $^O eq "gnukfreebsd" || $^O eq "freebsd" || $^O eq "darwin";
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if ($mode eq "-c") {
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print TARGET "#include <config.h>\n";
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}
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while (<RPCGEN>) {
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# We only want to fixup the GLibc rpcgen output
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# So just print data unchanged, if non-Linux
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unless ($fixup) {
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print TARGET;
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next;
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}
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if (m/^{/) {
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$in_function = 1;
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print TARGET;
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next;
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}
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s/\t/ /g;
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# Fix VPATH builds
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s,#include ".*/([^/]+)protocol\.h",#include "${1}protocol.h",;
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# Portability for Solaris RPC
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s/u_quad_t/uint64_t/g;
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s/quad_t/int64_t/g;
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s/xdr_u_quad_t/xdr_uint64_t/g;
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s/xdr_quad_t/xdr_int64_t/g;
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s/(?<!IXDR_GET_INT32 )IXDR_GET_LONG/IXDR_GET_INT32/g;
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if (m/^}/) {
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$in_function = 0;
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# Note: The body of the function is in @function.
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# Remove decl of buf, if buf isn't used in the function.
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my @uses = grep /[^.>]\bbuf\b/, @function;
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@function = grep !/[^.>]\bbuf\b/, @function if @uses == 1;
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# Remove decl of i, if i isn't used in the function.
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@uses = grep /[^.>]\bi\b/, @function;
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@function = grep !/[^.>]\bi\b/, @function if @uses == 1;
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# (char **)&objp->... gives:
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# warning: dereferencing type-punned pointer will break
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# strict-aliasing rules
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# so rewrite it.
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my %uses = ();
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my $i = 0;
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foreach (@function) {
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$uses{$1} = $i++ if m/\(char \*\*\)\&(objp->[a-z_.]+_val)/i;
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}
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if (keys %uses >= 1) {
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my $i = 1;
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foreach (sort(keys %uses)) {
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$i = $uses{$_};
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unshift @function,
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(" char **objp_cpp$i = (char **) (void *) &$_;\n");
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$i++;
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}
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@function =
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map { s{\(char \*\*\)\&(objp->[a-z_.]+_val)}
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{objp_cpp$uses{$1}}gi; $_ } @function;
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}
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# The code uses 'IXDR_PUT_{U_,}LONG' but it's wrong in two
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# ways: Firstly these functions are deprecated and don't
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# work on 64 bit platforms. Secondly the return value should
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# be ignored. Correct both these mistakes.
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@function =
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map { s/\bIXDR_PUT_((U_)?)LONG\b/(void)IXDR_PUT_$1INT32/; $_ }
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map { s/\bXDR_INLINE\b/(int32_t*)XDR_INLINE/; $_ }
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@function;
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print TARGET (join ("", @function));
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@function = ();
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}
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unless ($in_function) {
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print TARGET;
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} else {
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push @function, $_;
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}
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}
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close TARGET
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or die "cannot save $target: $!";
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close RPCGEN
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or die "cannot shutdown $rpcgen: $!";
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chmod 0444, $target
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or die "cannot set $target readonly: $!";
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