4f80ea942c
and "cp -r -a" can do it. git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@6791 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
897 lines
30 KiB
Perl
897 lines
30 KiB
Perl
package xCAT_plugin::statelite;
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BEGIN
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{
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$::XCATROOT = $ENV{'XCATROOT'} ? $ENV{'XCATROOT'} : '/opt/xcat';
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}
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use lib "$::XCATROOT/lib/perl";
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use xCAT::Table;
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use Getopt::Long;
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use File::Basename;
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use File::Path;
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use File::Copy;
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use File::Find;
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use Cwd;
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use File::Temp;
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use xCAT::Utils qw(genpassword);
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use xCAT::SvrUtils;
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use Data::Dumper;
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Getopt::Long::Configure("bundling");
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Getopt::Long::Configure("pass_through");
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my $cmdname = "liteimg";
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my $statedir = ".statelite";
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my $verbose = "0";
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sub handled_commands {
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return {
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$cmdname => "statelite"
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}
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}
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# function to handle request. Basically, get the information
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# about the image and then do the action on it. Is that vague enough?
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sub process_request {
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my $request = shift;
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my $callback = shift;
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my $doreq = shift;
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my $sitetab = xCAT::Table->new('site');
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my $ent = $sitetab->getAttribs({key=>'installdir'},['value']);
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my $installroot = "/install";
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# get /install directory
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if ($ent and $ent->{value}) {
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$installroot = $ent->{value};
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}
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# if not defined, error out... or should we set it as default?
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unless ($installroot) {
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$callback->({error=>["No installdir defined in site table"],errorcode=>[1]});
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return;
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}
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@ARGV = @{$request->{arg}};
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my $argc = scalar @ARGV;
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if ($argc == 0) {
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$callback->({info=>["$cmdname -h # this help message\n$cmdname -v # version\n$cmdname -V # verbose\n$cmdname -p <profile> -a <architecture> -o <OS>\n$cmdname imagename"]});
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return;
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}
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my $osver;
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my $arch;
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my $profile;
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my $rootimg_dir;
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my $destdir;
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my $imagename;
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GetOptions(
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"profile|p=s" => \$profile,
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"arch|a=s" => \$arch,
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"osver|o=s" => \$osver,
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"help|h" => \$help,
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"version|v" => \$version,
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"verbose|V" => \$verbose
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);
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if ($version) {
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my $version = xCAT::Utils->Version();
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$callback->({info=>[$version]});
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return;
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}
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if ($help) {
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$callback->({info=>["$cmdname -h # this help message\n$cmdname -v # version\n$cmdname -V # verbose\n$cmdname [-p profile] [-a architecture] [-o OS]\n$cmdname imagename"]});
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return;
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}
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# if they only gave us the image name:
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if (@ARGV > 0) {
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$imagename=$ARGV[0];
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if ($arch or $osver or $profile) {
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$callback->({error=>["-o, -p and -a options are not allowed when a image name is specified."],errorcode=>[1]});
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return;
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}
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#load the module in memory
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eval {require("$::XCATROOT/lib/perl/xCAT/Table.pm")};
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if ($@) {
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$callback->({error=>[$@],errorcode=>[1]});
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return;
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}
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#get the info from the osimage and linux
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my $osimagetab=xCAT::Table->new('osimage', -create=>1);
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if (!$osimagetab) {
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# os image doesn't exist in table.
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$callback->({error=>["The osimage table cannot be opened."],errorcode=>[1]});
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return;
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}
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# open the linux image table to get more attributes... for later.
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my $linuximagetab=xCAT::Table->new('linuximage', -create=>1);
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if (!$linuximagetab) {
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$callback->({error=>["The linuximage table cannot be opened."],errorcode=>[1]});
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return;
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}
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# get the os, arch, and profile from the image name table.
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(my $ref) = $osimagetab->getAttribs({imagename => $imagename}, 'osvers', 'osarch', 'profile');
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if (!$ref) {
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$callback->({error=>["Cannot find image \'$imagename\' from the osimage table."],errorcode=>[1]});
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return;
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}
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$osver=$ref->{'osvers'};
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$arch=$ref->{'osarch'};
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$profile=$ref->{'profile'};
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} # end of case where they give us osimage.
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unless ($osver and $arch and $profile ) {
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$callback->({error=>["osimage.osvers, osimage.osarch, and osimage.profile and must be specified for the image $imagename in the database, or you must specify -o os -p profile -a arch."],errorcode=>[1]});
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return;
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}
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$destdir="$installroot/netboot/$osver/$arch/$profile";
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$rootimg_dir="$destdir/rootimg";
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my $oldpath=cwd();
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# now we have all the info we need:
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# - rootimg_dir
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# - osver
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# - arch
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# - profile
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$callback->({info=>["going to modify $rootimg_dir"]});
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#get the root password for the node
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my $passtab = xCAT::Table->new('passwd');
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if ($passtab) {
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(my $pent) = $passtab->getAttribs({key=>'system',username=>'root'},'password');
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if ($pent and defined ($pent->{password})) {
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my $pass = $pent->{password};
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my $shadow;
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open($shadow,"<","$rootimg_dir/etc/shadow");
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my @shadents = <$shadow>;
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close($shadow);
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open($shadow,">","$rootimg_dir/etc/shadow");
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unless ($pass =~ /^\$1\$/) {
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$pass = crypt($pass,'$1$'.genpassword(8));
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}
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print $shadow "root:$pass:13880:0:99999:7:::\n";
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foreach (@shadents) {
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unless (/^root:/) {
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print $shadow "$_";
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}
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}
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close($shadow);
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}
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}
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# sync fils configured in the synclist to the rootimage
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#if (!$imagename) {
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# $syncfile = xCAT::SvrUtils->getsynclistfile(undef, $osver, $arch, $profile, "netboot");
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# if (defined ($syncfile) && -f $syncfile
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# && -d $rootimg_dir) {
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# print "sync files from $syncfile to the $rootimg_dir\n";
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# `$::XCATROOT/bin/xdcp -i $rootimg_dir -F $syncfile`;
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# }
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#}
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#store the image in the DB
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if (!$imagename) {
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my @ret=xCAT::SvrUtils->update_tables_with_diskless_image($osver, $arch, $profile, 'statelite');
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if ($ret[0] != 0) {
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$callback->({error=>["Error when updating the osimage tables: " . $ret[1]]});
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}
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$imagename="$osver-$arch-statelite-$profile"
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}
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# check if the file "litefile.save" exists or not
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# if it doesn't exist, then we get the synclist, and run liteMe
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# if it exists, it means "liteimg" has run more than one time, we need to compare with the synclist
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my @listSaved;
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if ( -e "$rootimg_dir/.statelite/litefile.save") {
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open SAVED, "$rootimg_dir/.statelite/litefile.save";
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# store all its contents to @listSaved;
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while(<SAVED>) {
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chomp $_;
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push @listSaved, $_;
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}
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close SAVED;
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}
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my %hashSaved = ();
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if ( parseLiteFiles(\@listSaved, \%hashSaved) ) {
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$callback->({error=>["parseLiteFiles failed for listSaved!"]});
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return ;
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}
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# now get the files for the node
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my @synclist = xCAT::Utils->runcmd("ilitefile $imagename", 0, 1);
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unless (@synclist) {
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$callback->({error=>["There are no files to sync for $imagename. You have to have some files read/write filled out in the synclist table."],errorcode=>[1]});
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return;
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}
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my $listNew = $synclist[0];
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my %hashNew = ();
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if ( parseLiteFiles($listNew, \%hashNew) ) {
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$callback->({error=>["parseLiteFiles failed for listNew!"]});
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return;
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}
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foreach my $entry (keys %hashNew) {
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my @tmp = split (/\s+/, $entry);
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if ($hashNew{$entry}) {
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foreach my $child ( @{$hashNew{$entry}} ) {
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my @tmpc = split (/\s+/, $child);
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my $f = $tmp[2];
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my $fc = $tmpc[2];
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if ($tmp[1] =~ m/bind/ && $tmpc[1] !~ m/bind/) {
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$callback->({error=>["$fc should have bind options like $f "], errorcode=> [ 1]});
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return;
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}
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if ($tmp[1] =~ m/tmpfs/ && $tmpc[1] =~ m/bind/) {
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$callback->({error=>["$fc shouldnot use bind options "], errorcode=> [ 1]});
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return;
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}
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if ($tmp[1] =~ m/persistent/ && $tmpc[1] !~ m/persistent/) {
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$callback->({error=>["$fc should have persistent option like $f "], errorcode=> [ 1]});
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return;
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}
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}
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}
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}
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# backup the file/directory before recovering the files in litefile.save
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unless ( -d "$rootimg_dir/.statebackup") {
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if (-e "$rootimg_dir/.statebackup") {
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xCAT::Utils->runcmd("rm $rootimg_dir/.statebackup", 0, 1);
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}
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$verbose && $callback->({info=>["mkdir $rootimg_dir/.statebackup"]});
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xCAT::Utils->runcmd("mkdir $rootimg_dir/.statebackup", 0, 1);
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}
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# recovery the files in litefile.save if necessary
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foreach my $line (keys %hashSaved) {
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my @oldentry = split(/\s+/, $line);
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my $f = $oldentry[2];
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my @newentries = grep /\s+$f$/, @{$listNew};
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my @entry;
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if(scalar @newentries == 1) {
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@entry = split(/\s+/, $newentries[0]);
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}
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# backup the children to .statebackup
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if ($hashSaved{$line}) {
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my $childrenRef = $hashSaved{$line};
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unless ( -d "$rootimg_dir/.statebackup$f" ) {
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xCAT::Utils->runcmd("rm -rf $rootimg_dir/.statebackup$f", 0, 1) if (-e "$rootimg_dir/.statebackup$f");
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$verbose && $callback->({info=>["mkdir $rootimg_dir/.statebackup$f"]});
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xCAT::Utils->runcmd("mkdir -p $rootimg_dir/.statebackup$f");
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}
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foreach my $child (@{$childrenRef}) {
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my @tmpc = split(/\s+/, $child);
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my $name = $rootimg_dir . $tmpc[2];
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if (-e $name) {
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$verbose && $callback->({info=>["cp -r -a $name $rootimg_dir.statebackup$f"]});
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xCAT::Utils->runcmd("cp -r -a $name $rootimg_dir.statebackup$f");
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}
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}
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}
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unless ($entry[1] eq $oldentry[1]) {
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recoverFiles($rootimg_dir, \@oldentry, $callback);
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if ($hashSaved{$line}) {
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$verbose && $callback->({info=>["$f has sub items in the litefile table."]});
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my $childrenRef = $hashSaved{$line};
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foreach my $child (@{$childrenRef}) {
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# recover them from .statebackup to $rootimg_dir
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my @tmpc = split (/\s+/, $child);
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my $name = $tmpc[2];
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my @newentries = grep /\s+$name$/, @{listNew};
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my @entry;
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my $destf = $rootimg_dir . $name;
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my $srcf = $rootimg_dir . ".statebackup" . $name;
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if ( -e $destf ) {
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$verbose && $callback->({info => ["rm -rf $destf"]});
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xCAT::Utils->runcmd("rm -rf $destf", 0, 1);
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}
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if ( -e $srcf ) {
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$verbose && $callback->({info=>["recovering from $srcf to $destf"]});
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xCAT::Utils->runcmd("cp -r -a $destf $srcf", 0, 1);
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}
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}
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}
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}
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# recover the children
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if ($hashSaved{$line}) {
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$verbose && $callback->({info=>["$f has sub items in the litefile table."]});
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my $childrenRef = $hashSaved{$line};
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foreach my $child (@{$childrenRef}) {
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my @tmpc = split (/\s+/, $child);
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my $name = $tmpc[2];
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my @newentries = grep /\s+$name$/, @{listNew};
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my @entry;
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if (scalar @newentries == 1) {
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@entry = split(/\s+/, $newentries[0]);
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}
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unless($tmpc[1] eq $entry[1]) {
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recoverFiles($rootimg_dir, \@tmpc, $callback);
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}
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}
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}
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}
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# remove .statebackup
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$verbose && $callback->({info=>["remove .statebackup"]});
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xCAT::Utils->runcmd("rm -rf $rootimg_dir/.statebackup", 0, 1);
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# then store the @synclist to litefile.save
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#system("cp $rootimg_dir/.statelite/litefile.save $rootimg_dir/.statelite/litefile.save1");
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open SAVED, ">$rootimg_dir/.statelite/litefile.save";
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foreach my $line (@{$listNew}) {
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print SAVED "$line\n";
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}
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close SAVED;
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=head3
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# then the @synclist
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# We need to consider the characteristics of the file if the option is "persistent,bind" or "bind"
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my @files;
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my @bindedFiles;
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foreach my $line (@synclist){
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foreach (@{$line}){
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my @entry = split(/\s+/, $_);
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# $entry[0] => imgname or nodename
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# $entry[1] => option value
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# $entry[2] => file/directory name
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my $f = $entry[2];
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if($entry[1] =~ m/bind/) {
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if($f =~ /^\//) {
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push @bindedFiles, $f;
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}else {
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# make sure each file begins with "/"
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$callback->({error=>["$f in litefile does not begin with absolute path! Need a '/' in the beginning"],errorcode=>[1]});
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return;
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}
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} else {
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if($f =~ /^\//){
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push @files, $f;
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}else{
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# make sure each file begins with "/"
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$callback->({error=>["$f in litefile does not begin with absolute path! Need a '/' in the beginning"],errorcode=>[1]});
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return;
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}
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}
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}
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}
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liteMe($rootimg_dir,\@files, \@bindedFiles, $callback);
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=cut
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liteMeNew($rootimg_dir, \%hashNew, $callback);
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# now stick the rc file in:
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# this is actually a pre-rc file because it gets run before the node boots up all the way.
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$verbose && $callback->({info => ["put the statelite rc file to $rootimg_dir/etc/init.d/"]});
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if ($osver =~ m/^rh[a-zA-Z]*5/ and $arch eq "ppc64") { # special case for redhat5.x on PPC64
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system("cp -a $::XCATROOT/share/xcat/netboot/add-on/statelite/rc.statelite.ppc.redhat $rootimg_dir/etc/init.d/statelite");
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}else {
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system("cp -a $::XCATROOT/share/xcat/netboot/add-on/statelite/rc.statelite $rootimg_dir/etc/init.d/statelite");
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}
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}
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sub liteMeNew {
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my $rootimg_dir = shift;
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my $hashNewRef = shift;
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my $callback = shift;
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unless (-d $rootimg_dir) {
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$callback->({error=>["no rootimage dir"],errorcode=>[1]});
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return;
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}
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# snapshot directory for tmpfs and persistent data.
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$callback->({info=>["creating $rootimg_dir/$statedir"]});
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unless ( -d "$rootimg_dir/$statedir/tmpfs" ) {
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xCAT::Utils->runcmd("mkdir -p $rootimg_dir/$statedir/tmpfs", 0, 1);
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}
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foreach my $line (keys %{$hashNewRef}) {
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liteItem($rootimg_dir, $line, 0, $callback);
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if($hashNewRef->{$line}) { # there're children
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my $childrenRef = $hashNewRef->{$line};
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print Dumper($childrenRef);
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foreach my $child (@{$childrenRef}) {
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liteItem($rootimg_dir, $child, 1, $callback);
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}
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}
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}
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# end loop, synclist should now all be in place.
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}
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sub liteMe {
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# Arg 1: root image dir: /install/netboot/centos5.3/x86_64/compute/rootimg
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my $rootimg_dir = shift;
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my $files = shift;
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my $bindedFiles = shift;
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# Arg 2: callback ref to make comments...
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my $callback = shift;
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unless(-d $rootimg_dir){
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$callback->({error=>["no rootimage dir"],errorcode=>[1]});
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return;
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}
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# snapshot directory for tmpfs and persistent data.
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$callback->({info=>["creating $rootimg_dir/$statedir"]});
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mkpath("$rootimg_dir/$statedir/tmpfs");
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# now make a place for all the files.
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# this loop uses "mount --bind" to mount files instead of creating symbolic links for
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# each of the files in the @$bindedFiles sync list;
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# 1. copy original contents if they exist to .default directory
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foreach my $f (@$bindedFiles) {
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# copy the file to /.defaults
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my $rif = $rootimg_dir . $f;
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my $d = dirname($f);
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# if no such file like $rif, create one
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unless ( -e "$rif" ) {
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if($f =~ m{/$}) {
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$verbose && $callback->({info=>["mkdir -p $rif"]});
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system("mkdir -p $rif");
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} else {
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# check whether its directory exists or not
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my $rifdir = dirname($rif);
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unless( -e $rifdir ) {
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$verbose && $callback->({info => ["mkdir $rifdir"]});
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mkdir($rifdir);
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}
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$verbose && $callback->({info=>["touch $rif"]});
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system("touch $rif");
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}
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}
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unless ( -e "$rootimg_dir/.default$d" ) {
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$verbose && $callback->({info=>["mkdir -p $rootimg_dir/.default$d"]});
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system("mkdir -p $rootimg_dir/.default$d");
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}
|
|
|
|
# copy the file in place.
|
|
$verbose && $callback->({info=>["cp -r -a $rif $rootimg_dir/.default$d"]});
|
|
system("cp -r -a $rif $rootimg_dir/.default$d");
|
|
}
|
|
|
|
# this loop creates symbolic links for each of the files in the sync list.
|
|
# 1. copy original contents if they exist to .default directory
|
|
# 2. remove file
|
|
# 3. create symbolic link to .statelite
|
|
|
|
my $sym = "1"; # sym = 0 means no symlinks, just bindmount
|
|
if($sym){
|
|
foreach my $f (@$files){
|
|
#check if the file has been moved to .default by its parent or by last liteimg, if yes, then do nothing
|
|
my $ret=`readlink -m $rootimg_dir$f`;
|
|
if ($? == 0) {
|
|
if ($ret =~ /$rootimg_dir\/.default/)
|
|
{
|
|
$verbose && $callback->({info=>["do nothing for file $f"]});
|
|
next;
|
|
}
|
|
}
|
|
|
|
|
|
# copy the file to /.defaults
|
|
my $rif = $rootimg_dir . $f;
|
|
my $d = dirname($f);
|
|
if( -f "$rif" or -d "$rif"){
|
|
# if its already a link then leave it alone.
|
|
unless(-l $rif){
|
|
# mk the directory if it doesn't exist:
|
|
$verbose && $callback->({info=>["mkdir -p $rootimg_dir/.default$d"]});
|
|
system("mkdir -p $rootimg_dir/.default$d");
|
|
|
|
# copy the file in place.
|
|
$verbose && $callback->({info=>["cp -r -a $rif $rootimg_dir/.default$d"]});
|
|
system("cp -r -a $rif $rootimg_dir/.default$d");
|
|
|
|
# remove the real file
|
|
$verbose && $callback->({info=>["rm -rf $rif"]});
|
|
system("rm -rf $rif");
|
|
|
|
}
|
|
|
|
}else{
|
|
|
|
# in this case the file doesn't exist in the image so we create something to it.
|
|
# here we're modifying the read/only image
|
|
unless(-d "$rootimg_dir$d"){
|
|
$verbose && $callback->({info=>["mkdir -p $rootimg_dir$d"]});
|
|
system("mkdir -p $rootimg_dir$d");
|
|
}
|
|
|
|
unless(-d "$rootimg_dir/.default$d"){
|
|
$verbose && $callback->({info=>["mkdir -p $rootimg_dir/.default$d"]});
|
|
system("mkdir -p $rootimg_dir/.default$d");
|
|
}
|
|
|
|
# now make touch the file:
|
|
if($f =~ /\/$/){
|
|
# if its a directory, make the directory in .default
|
|
$verbose && $callback->({info=>["mkdir -p $rootimg_dir/.default$f"]});
|
|
system("mkdir -p $rootimg_dir/.default$f");
|
|
}else{
|
|
# if its just a file then link it.
|
|
$verbose && $callback->({info=>["touch $rootimg_dir/.default$f"]});
|
|
system("touch $rootimg_dir/.default$f");
|
|
}
|
|
}
|
|
|
|
# now create the spot in tmpfs
|
|
$verbose && $callback->({info=>["mkdir -p $rootimg_dir/$statedir/tmpfs$d"]});
|
|
system("mkdir -p $rootimg_dir/$statedir/tmpfs$d");
|
|
|
|
# now for each file, create a symbollic link to /.statelite/tmpfs/
|
|
# strip the last / if its a directory for linking, but be careful!
|
|
# doing ln -sf ../../tmp <blah>../tmp when tmp is a directory creates 50 levels of links.
|
|
# have to do:
|
|
# ln -sf ../../tmp <blah>../../tmp/ <- note the / on the end!
|
|
if($f =~ /\/$/){
|
|
$f =~ s/\/$//g;
|
|
}
|
|
# now do the links.
|
|
# link the .default file to the .statelite file and the real file to the .statelite file.
|
|
|
|
# ../ for tmpfs
|
|
# ../ for .statelite
|
|
# the rest are for the paths in the file.
|
|
my $l = getRelDir($f);
|
|
$verbose && $callback->({info=>["ln -sf ../../$l/.default$f $rootimg_dir/$statedir/tmpfs$f"]});
|
|
system("ln -sfn ../../$l/.default$f $rootimg_dir/$statedir/tmpfs/$f");
|
|
|
|
$verbose && $callback->({info=>["ln -sf $l/$statedir/tmpfs$f $rootimg_dir$f"]});
|
|
system("ln -sfn $l/$statedir/tmpfs$f $rootimg_dir$f");
|
|
|
|
}
|
|
}else{
|
|
# if we go the bindmount method, create some files
|
|
foreach my $f (@$files){
|
|
my $rif = $rootimg_dir . $f;
|
|
my $d = dirname($rif);
|
|
unless(-e "$rif"){
|
|
# if it doesn't exist, create it on base image:
|
|
unless(-d $d){
|
|
#$callback->({info=>["mkdir -p $d"]});
|
|
system("mkdir -p $d");
|
|
}
|
|
if($rif =~ /\/$/){
|
|
#$callback->({info=>["mkdir -p $rif"]});
|
|
system("mkdir -p $rif");
|
|
}else{
|
|
#$callback->({info=>["touch $rif"]});
|
|
system("touch $rif");
|
|
}
|
|
}
|
|
else {
|
|
#$callback->({info=>["$rif exists"]});
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
# end loop, synclist should now all be in place.
|
|
|
|
# now stick the rc files in:
|
|
# this is actually a pre-rc file because it gets run before the node boots up all the way.
|
|
system("cp -a $::XCATROOT/share/xcat/netboot/add-on/statelite/rc.statelite $rootimg_dir/etc/init.d/statelite");
|
|
|
|
}
|
|
|
|
sub getRelDir {
|
|
my $f = shift;
|
|
$f = dirname($f);
|
|
if($f eq "/"){
|
|
return ".";
|
|
}
|
|
my $l = "";
|
|
|
|
my @arr = split("/", $f);
|
|
foreach (1 .. $#arr){
|
|
$l .= "../";
|
|
}
|
|
|
|
chop($l); # get rid of last /
|
|
return $l
|
|
}
|
|
|
|
=head3 parseLiteFiles
|
|
In the liteentry table, one directory and its sub-items (including sub-directory and entries) can co-exist;
|
|
In order to handle such a scenario, one hash is generated to show the hirarachy relationship
|
|
|
|
For example, one array with entry names is used as the input:
|
|
my @entries = (
|
|
"imagename bind,persistent /var/",
|
|
"imagename bind /var/tmp/",
|
|
"imagename tmpfs,rw /root/",
|
|
"imagename tmpfs,rw /root/.bashrc",
|
|
"imagename tmpfs,rw /root/test/",
|
|
"imagename bind /etc/resolv.conf",
|
|
"imagename bind /var/run/"
|
|
);
|
|
Then, one hash will generated as:
|
|
%hashentries = {
|
|
'imagename bind,persistent /var/' => [
|
|
'imagename bind /var/tmp/',
|
|
'imagename bind /var/run/'
|
|
],
|
|
'imagename bind /etc/resolv.conf' => undef,
|
|
'imagename tmpfs,rw /root/' => [
|
|
'imagename tmpfs,rw /root/.bashrc',
|
|
'imagename tmpfs,rw /root/test/'
|
|
]
|
|
};
|
|
|
|
Arguments:
|
|
one array with entrynames,
|
|
one hash to hold the entries parsed
|
|
|
|
Returns:
|
|
0 if sucucess
|
|
1 if fail
|
|
|
|
=cut
|
|
|
|
sub parseLiteFiles {
|
|
my ($flref, $dhref) = @_;
|
|
my @entries = @{$flref};
|
|
|
|
|
|
foreach (@entries) {
|
|
my $entry = $_;
|
|
my @str = split /\s+/, $entry;
|
|
my $file = $str[2];
|
|
chop $file if ($file =~ m{/$});
|
|
unless (exists $dhref->{"$entry"}) {
|
|
my $parent = dirname($file);
|
|
# to see whether $parent exists in @entries or not
|
|
unless ($parent =~ m/\/$/) {
|
|
$parent .= "/";
|
|
}
|
|
#$verbose && print "+++$parent+++\n";
|
|
#my $found = grep $_ =~ m/\Q$parent\E$/, @entries;
|
|
my @res = grep {$_ =~ m/\Q$parent\E$/} @entries;
|
|
my $found = scalar @res;
|
|
#$verbose && print "+++found = $found+++\n";
|
|
|
|
if($found eq 1) { # $parent is found in @entries
|
|
#$verbose && print "+++$parent is found+++\n";
|
|
chop $parent;
|
|
my @keys = keys %{$dhref};
|
|
my $kfound = grep {$_ =~ m/\Q$res[0]\E$/} @keys;
|
|
if($kfound eq 0) {
|
|
$dhref->{$res[0]} = [];
|
|
}
|
|
push @{$dhref->{"$res[0]"}}, $entry;
|
|
}else {
|
|
$dhref->{"$entry"} = ();
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
=head3
|
|
recoverFiles
|
|
=cut
|
|
|
|
sub recoverFiles {
|
|
my ($rootimg_dir, $oldentry, $callback) = @_;
|
|
$f = $oldentry->[2];
|
|
|
|
#$callback->({info => ["! updating $f ..."]});
|
|
|
|
if ($oldentry->[1] =~ m/bind/) {
|
|
# shouldn't copy back from /.default, maybe the user has replaced the file/directory in .postinstall file
|
|
my $default = $rootimg_dir . $f;
|
|
xCAT::Utils->runcmd("rm -rf $default", 0, 1); # not sure whether it's necessary right now
|
|
} else {
|
|
my $target = $rootimg_dir . $f;
|
|
if (-l $target) { #not one directory
|
|
my $location = readlink $target;
|
|
# if it is not linked from tmpfs, it should have been modified by the .postinstall file
|
|
if ($location =~ /\.statelite\/tmpfs/) {
|
|
xCAT::Utils->runcmd("rm -rf $target", 0, 1);
|
|
my $default = $rootimg_dir . "/.default" . $f;
|
|
if( -e $default) {
|
|
xCAT::Utils->runcmd("cp -r -a $default $target", 0, 1);
|
|
}else { # maybe someone deletes the copy in .default directory
|
|
xCAT::Utils->runcmd("touch $target", 0, 1);
|
|
}
|
|
}
|
|
} else {
|
|
chop $target;
|
|
if( -l $target ) {
|
|
my $location = readlink $target;
|
|
if ($location =~ /\.statelite\/tmpfs/) {
|
|
xCAT::Utils->runcmd("rm -rf $target", 0, 1);
|
|
my $default = $rootimg_dir . "/.default" . $f;
|
|
if( -e $default) {
|
|
xCAT::Utils->runcmd("cp -r -a $default $target", 0, 1);
|
|
} else {
|
|
xCAT::Utils->runcmd("mkdir $target", 0, 1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
$target = $rootimg_dir . "/.statelite/tmpfs" . $f;
|
|
xCAT::Utils->runcmd("rm -rf $target", 0, 1);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
=head3
|
|
liteItem
|
|
=cut
|
|
|
|
sub liteItem {
|
|
my $rootimg_dir = shift;
|
|
my $item = shift;
|
|
my $isChild = shift;
|
|
my $callback = shift;
|
|
|
|
my @entry = split (/\s+/, $item);
|
|
my $f = $entry[2];
|
|
|
|
my $rif = $rootimg_dir . $f;
|
|
my $d = dirname($f);
|
|
|
|
if($entry[1] =~ m/bind/) {
|
|
|
|
# if no such file like $rif, create one
|
|
unless ( -e "$rif" ) {
|
|
if ($f =~ m{/$}) {
|
|
$verbose && $callback->({info=>["mkdir -p $rif"]});
|
|
system("mkdir -p $rif");
|
|
} else {
|
|
# check whether its directory exists or not
|
|
my $rifdir = $rootimg_dir . $d;
|
|
unless (-e $rifdir) {
|
|
$verbose && $callback->({info => ["mkdir $rifdir"]});
|
|
mkdir($rifdir);
|
|
}
|
|
$verbose && $callback->({info=>["touch $rif"]});
|
|
system("touch $rif");
|
|
}
|
|
}
|
|
|
|
unless ( -e "$rootimg_dir/.default$d" ) {
|
|
$verbose && $callback->({info=>["mkdir -p $rootimg_dir/.default$d"]});
|
|
system("mkdir -p $rootimg_dir/.default$d");
|
|
}
|
|
|
|
# copy the file to /.defaults
|
|
$verbose && $callback->({info=>["cp -r -a $rif $rootimg_dir/.default$d"]});
|
|
system("cp -r -a $rif $rootimg_dir/.default$d");
|
|
|
|
}else {
|
|
# 1. copy original contents if they exist to .default directory
|
|
# 2. remove file
|
|
# 3. create symbolic link to .statelite
|
|
|
|
if ($isChild == 0) {
|
|
#check if the file has been moved to .default by its parent or by last liteimg, if yes, then do nothing
|
|
my $ret=`readlink -m $rootimg_dir$f`;
|
|
if ($? == 0) {
|
|
if ($ret =~ /$rootimg_dir\/.default/) {
|
|
$verbose && $callback->({info=>["do nothing for file $f"]});
|
|
next;
|
|
}
|
|
}
|
|
|
|
# copy the file to /.defaults
|
|
if( -f "$rif" or -d "$rif"){
|
|
# if its already a link then leave it alone.
|
|
unless(-l $rif){
|
|
# mk the directory if it doesn't exist:
|
|
$verbose && $callback->({info=>["mkdir -p $rootimg_dir/.default$d"]});
|
|
system("mkdir -p $rootimg_dir/.default$d");
|
|
|
|
# copy the file in place.
|
|
$verbose && $callback->({info=>["cp -r -a $rif $rootimg_dir/.default$d"]});
|
|
system("cp -r -a $rif $rootimg_dir/.default$d");
|
|
|
|
# remove the real file
|
|
$verbose && $callback->({info=>["rm -rf $rif"]});
|
|
system("rm -rf $rif");
|
|
}
|
|
} else {
|
|
# in this case the file doesn't exist in the image so we create something to it.
|
|
# here we're modifying the read/only image
|
|
|
|
unless (-d "$rootimg_dir$d") {
|
|
$verbose && $callback->({info=>["mkdir -p $rootimg_dir$d"]});
|
|
system("mkdir -p $rootimg_dir$d");
|
|
}
|
|
|
|
unless(-d "$rootimg_dir/.default$d"){
|
|
$verbose && $callback->({info=>["mkdir -p $rootimg_dir/.default$d"]});
|
|
system("mkdir -p $rootimg_dir/.default$d");
|
|
}
|
|
|
|
# now make touch the file:
|
|
if($f =~ /\/$/){
|
|
# if its a directory, make the directory in .default
|
|
$verbose && $callback->({info=>["mkdir -p $rootimg_dir/.default$f"]});
|
|
system("mkdir -p $rootimg_dir/.default$f");
|
|
} else {
|
|
# if its just a file then link it.
|
|
$verbose && $callback->({info=>["touch $rootimg_dir/.default$f"]});
|
|
system("touch $rootimg_dir/.default$f");
|
|
}
|
|
}
|
|
|
|
# now create the spot in tmpfs
|
|
$verbose && $callback->({info=>["mkdir -p $rootimg_dir/$statedir/tmpfs$d"]});
|
|
system("mkdir -p $rootimg_dir/$statedir/tmpfs$d");
|
|
|
|
# now for each file, create a symbollic link to /.statelite/tmpfs/
|
|
# strip the last / if its a directory for linking, but be careful!
|
|
# doing ln -sf ../../tmp <blah>../tmp when tmp is a directory creates 50 levels of links.
|
|
# have to do:
|
|
# ln -sf ../../tmp <blah>../../tmp/ <- note the / on the end!
|
|
if($f =~ /\/$/){
|
|
$f =~ s/\/$//g;
|
|
}
|
|
# now do the links.
|
|
# link the .default file to the .statelite file and the real file to the .statelite file.
|
|
# ../ for tmpfs
|
|
# ../ for .statelite
|
|
# the rest are for the paths in the file.
|
|
my $l = getRelDir($f);
|
|
$verbose && $callback->({info=>["ln -sf ../../$l/.default$f $rootimg_dir/$statedir/tmpfs$f"]});
|
|
system("ln -sfn ../../$l/.default$f $rootimg_dir/$statedir/tmpfs/$f");
|
|
|
|
$verbose && $callback->({info=>["ln -sf $l/$statedir/tmpfs$f $rootimg_dir$f"]});
|
|
system("ln -sfn $l/$statedir/tmpfs$f $rootimg_dir$f");
|
|
|
|
} else {
|
|
# since its parent directory has been linked to .default and .statelite/tmpfs/,
|
|
# what we only to do is to check it exists in .default directory
|
|
if($f =~ m{/$}) { # one directory
|
|
unless ( -d "$rootimg_dir/.default$f" ) {
|
|
if (-e "$rootimg_dir/.default$f") {
|
|
xCAT::Utils->runcmd("rm -rf $rootimg_dir/.default$f", 0, 1);
|
|
}
|
|
$verbose && $callback->({info=>["mkdir -p $rootimg_dir/.default$f"]});
|
|
xCAT::Utils->runcmd("mkdir -p $rootimg_dir/.default$f", 0, 1);
|
|
}
|
|
}else { # only one file
|
|
my $fdir = dirname($f);
|
|
unless ( -d "$rootimg_dir/.default$fdir") {
|
|
xCAT::Utils->runcmd("mkdir -p $rootimg_dir/.default$fdir", 0, 1);
|
|
}
|
|
$verbose && $callback->({info=>["touch $rootimg_dir/.default$f"]});
|
|
xCAT::Utils->runcmd("touch $rootimg_dir/.default$f", 0, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
|
|
1;
|