mirror of
https://github.com/xcat2/xcat-core.git
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287 lines
9.4 KiB
Perl
287 lines
9.4 KiB
Perl
#!/usr/bin/perl
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###############################################################################
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# IBM(c) 2015 EPL license http://www.eclipse.org/legal/epl-v10.html
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###############################################################################
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# COMPONENT: mkdummyimage
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#
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# This script creates a dummy image.
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###############################################################################
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use strict;
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use warnings;
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use File::Basename;
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use File::Path;
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use File::Spec;
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use File::Temp;
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use Getopt::Long;
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use MIME::Base64;
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use Sys::Hostname;
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use Socket;
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my $version = "1.0";
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my $defaultName = 'dummy.img'; # Default image file name
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my $dest = ''; # Target destination (filespec)
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my $displayHelp = 0; # Display help information
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my $eckdImage = 0; # ECKD image is wanted
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my $fbaImage = 0; # FBA image is wanted
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my $remoteHost = ''; # Remote host transfer information
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my $remoteUser = ''; # Remote user transfer information
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my $verbose = 0; # Verbose flag - 0: quiet, 1: verbose
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my $versionOpt = 0; # Show version information flag
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# set the usage message
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my $usage_string = "Usage:\n
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$0 [ --eckd | --fba ] [ -V | --verbose ]
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[ -d | --destination <dest> ] [-R | --remotehost <host> ]\n
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or\n
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$0 -v | --version\n
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or\n
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$0 -h | --help\n
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The following options are supported:\n
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-d | --destination <dest>
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File specification of the image file to be created.
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Either the filename only or a fully qualified name.
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If the destination is within the xCAT MN then
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it must be within the directory specified by
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the installdir property in the xCAT site table.
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The default file name is $defaultName.\n
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--eckd Create an empty ECKD disk image. This is the
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default image type if neither --eckd or --fba
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is specifed.\n
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--fba Create an empty FBA disk image\n
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-h | --help Display help information\n
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-R | --remotehost <host>
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Indicates that the destination specified on the
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command invocation is the file specification on a
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host other than the management node.
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The 'host' operand is the IP address or DNS host
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name of the target server. A user may be specified
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in a similar way as it is specified with the SCP
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command using the format 'user\@host' where 'user'
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is the name of the user on the remote system and
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'host' operand is as previously stated. The image
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is created in the directory specified by the
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tmpdir property in the site table and then moved
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to the remote host using SCP. After moving the
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image off the xCAT MN, the image is removed
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from the xCAT MN. Prior to specifying the command,
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the keystore on the remote host must be set up with
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the public key of the xCAT MN.\n
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-v | --version Display the version of this script.\n
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-V | --verbose Display verbose processing messages.\n";
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#-------------------------------------------------------
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=head3 createImage
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Description : Create the dummy image file.
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Arguments : None
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Returns : 0 - No error
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non-zero - Error detected.
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Example : $rc = createImage();
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=cut
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#-------------------------------------------------------
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sub createImage{
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my $rc = 0;
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my $buildDir = '';
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my $header;
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# Create a temporary directory in which to create the image.
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my $tmpDir = `/opt/xcat/sbin/tabdump site| grep '^"tmpdir",' | sed s/'^"tmpdir","'//g| sed s/'".*'//g`;
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chomp $tmpDir;
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if ( $tmpDir eq '' ) {
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print "Error: The 'tmpdir' value is missing from the site table.\n";
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$rc = 11;
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goto FINISH_createImage;
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}
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$buildDir = mkdtemp( "$tmpDir/image.$$.XXXXXX" );
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# Create the image
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my $imageFile = $defaultName;
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open( my $fh, '>', "$buildDir/$imageFile" ) or die "Could not open file '$buildDir/$imageFile'";
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if ( $verbose ) {
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print "Creating the image in $buildDir as $imageFile.\n";
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}
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if ( $eckdImage ) {
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$header = "xCAT CKD Disk Image:";
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$header = "$header 0 CYL";
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}
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elsif ( $fbaImage ) {
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$header = "xCAT FBA Disk Image:";
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$header = "$header 0 BLK";
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}
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$header = "$header HLen: 0055"; # Header size increased by x from 0055
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$header = "$header GZIP: 0";
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printf $fh "%-512s", "$header";
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close( $fh );
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# Move the image to the target location.
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if ( $remoteHost ne '' ) {
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# Do a remote transfer
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my $remoteTarget = $remoteHost . ':' . $dest;
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if ( $remoteUser ne '' ) {
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$remoteTarget = "$remoteUser\@$remoteTarget";
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}
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my $scpVerbose = '';
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if ( $verbose ) {
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print "Moving the image $imageFile to the remote system $remoteHost as $dest.\n";
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$scpVerbose = '-v'
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}
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$rc = system( "/usr/bin/scp $scpVerbose -B $buildDir/$imageFile $remoteTarget" );
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if ( $rc ) {
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$rc = $rc >> 8;
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print "Error: Unable to copy the image $buildDir/$imageFile to the remote host: $remoteHost, rc: $rc\n";
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$rc = 30;
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goto FINISH_createImage;
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}
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} else {
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# Move the file to a local directory
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$rc = system( "cp $buildDir/$imageFile $dest" );
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if ( $rc ) {
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$rc = $rc >> 8;
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print "Error: Unable to copy the image $buildDir/$imageFile to the destination: $dest, rc: $rc\n";
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$rc = 40;
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goto FINISH_createImage;
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}
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}
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if ( $remoteHost ne '' ) {
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print "Image created on $remoteHost: $dest\n";
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} else {
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print "Image created: $dest\n";
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}
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FINISH_createImage:
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if ( -d $buildDir ) {
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rmtree $buildDir;
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}
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return $rc;
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}
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#-------------------------------------------------------
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=head3 showHelp
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Description : Show the help inforamtion.
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Arguments : None.
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Returns : None.
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Example : showHelp();
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=cut
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#-------------------------------------------------------
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sub showHelp{
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print "$0 prepares a special image file that contains no disk\ncontents.\n\n";
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print $usage_string;
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return;
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}
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#*****************************************************************************
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# Main routine
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#*****************************************************************************
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my $rc = 0;
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my $out;
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# Parse the arguments
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$Getopt::Long::ignorecase = 0;
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Getopt::Long::Configure( "bundling" );
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if (!GetOptions(
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'eckd' => \$eckdImage,
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'd|destination=s' => \$dest,
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'fba' => \$fbaImage,
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'h|help' => \$displayHelp,
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'R|remotehost=s' => \$remoteHost,
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'v|version' => \$versionOpt,
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'V|verbose' => \$verbose )) {
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print $usage_string;
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goto FINISH_main;
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}
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if ( $versionOpt ) {
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print "Version: $version\n";
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}
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if ( $displayHelp ) {
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showHelp();
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}
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if ( $displayHelp or $versionOpt ) {
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goto FINISH_main;
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}
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if ( !$eckdImage and !$fbaImage ) {
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$eckdImage = 1;
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}
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if ( $remoteHost ne '' ) {
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$remoteHost =~ s/^\s+|\s+$//g; # trim blanks from both ends of the value
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my $spaceCnt = scalar( () = $remoteHost =~ /\s+/g );
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if ( $spaceCnt != 0 ) {
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print "Error: Remote host value is not a single word.\n";
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$rc = 1;
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goto FINISH_main;
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}
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if ( $remoteHost =~ /@/ ) {
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my @parts = split( /@/, $remoteHost );
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if ( substr( $remoteHost, -1) eq '@' or
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@parts > 2 or
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!defined $parts[0] or $parts[0] eq '' or
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!defined $parts[1] or $parts[1] eq '' ) {
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print "Error: Remote host value is not valid.\n" .
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" It should be in the form of 'hostname' or 'user\@hostname'.\n";
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$rc = 2;
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goto FINISH_main;
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}
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$remoteUser = $parts[0];
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$remoteHost = $parts[1];
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} else {
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$remoteUser = 'root';
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}
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}
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# Determine the destination and make certain it is valid.
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my $installDir = `/opt/xcat/sbin/tabdump site| grep '^"installdir",' | sed s/'^"installdir","'//g| sed s/'".*'//g`;
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chomp $installDir;
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if ( $installDir eq '' ) {
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print "Error: The 'installDir' value is missing from the site table.\n";
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$rc = 10;
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goto FINISH_main;
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}
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if ( $dest eq '' ){
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# Set default destination for either a local or remote location.
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if ( $remoteHost eq '' ) {
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$dest = "$installDir/$defaultName";
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} else {
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$dest = "$defaultName";
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}
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} else {
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# Can only verify local destination here. SCP will verify the remote destination.
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if ( $remoteHost eq '' ) {
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if ( $dest !~ /\// ) {
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$dest = "$installDir/$dest";
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} else {
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if ( $dest !~ /^$installDir/ ) {
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print "Error: The destination is not within the install directory specified in the site table.\n";
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$rc = 20;
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goto FINISH_main;
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}
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}
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}
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}
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# Create the image file.
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createImage();
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FINISH_main:
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exit $rc;
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