+sub get_partnum {
+ my ($part_path) = @_;
+
+ my $st = stat($part_path);
+
+ die "error detecting block device '$part_path'\n"
+ if !$st || !$st->mode || !S_ISBLK($st->mode) || !$st->rdev;
+
+ my $major = PVE::Tools::dev_t_major($st->rdev);
+ my $minor = PVE::Tools::dev_t_minor($st->rdev);
+ my $partnum_path = "/sys/dev/block/$major:$minor/";
+
+ my $partnum;
+
+ $partnum = file_read_firstline("${partnum_path}partition");
+
+ die "Partition does not exist\n" if !defined($partnum);
+
+ #untaint and ensure it is a int
+ if ($partnum =~ m/(\d+)/) {
+ $partnum = $1;
+ die "Partition number $partnum is invalid\n" if $partnum > 128;
+ } else {
+ die "Failed to get partition number\n";
+ }
+
+ return $partnum;
+}
+
+sub get_blockdev {
+ my ($part_path) = @_;
+
+ my ($dev, $block_dev);
+ if ($part_path =~ m|^/dev/(.*)$|) {
+ $dev = $1;
+ my $link = readlink "/sys/class/block/$dev";
+ $block_dev = $1 if $link =~ m|([^/]*)/$dev$|;
+ }
+
+ die "Can't parse parent device\n" if !defined($block_dev);
+ die "No valid block device\n" if index($dev, $block_dev) == -1;
+
+ $block_dev = "/dev/$block_dev";
+ die "Block device does not exsists\n" if !(-b $block_dev);
+
+ return $block_dev;
+}
+
+sub locked_disk_action {
+ my ($sub) = @_;
+ my $res = PVE::Tools::lock_file('/run/lock/pve-diskmanage.lck', undef, $sub);
+ die $@ if $@;
+ return $res;
+}
+
+sub assert_disk_unused {
+ my ($dev) = @_;
+
+ die "device '$dev' is already in use\n" if disk_is_used($dev);
+
+ return undef;
+}
+
+sub append_partition {
+ my ($dev, $size) = @_;
+
+ my $devname = $dev;
+ $devname =~ s|^/dev/||;
+
+ my $newpartid = 1;
+ dir_glob_foreach("/sys/block/$devname", qr/\Q$devname\E.*?(\d+)/, sub {
+ my ($part, $partid) = @_;
+
+ if ($partid >= $newpartid) {
+ $newpartid = $partid + 1;
+ }
+ });
+
+ $size = PVE::Tools::convert_size($size, 'b' => 'mb');
+
+ run_command([ $SGDISK, '-n', "$newpartid:0:+${size}M", $dev ],
+ errmsg => "error creating partition '$newpartid' on '$dev'");
+
+ my $partition;
+
+ # loop again to detect the real partiton device which does not always follow
+ # a strict $devname$partition scheme like /dev/nvme0n1 -> /dev/nvme0n1p1
+ dir_glob_foreach("/sys/block/$devname", qr/\Q$devname\E.*$newpartid/, sub {
+ my ($part) = @_;
+
+ $partition = "/dev/$part";
+ });
+
+ return $partition;
+}
+
+my sub strip_dev :prototype($) {
+ my ($devpath) = @_;
+ $devpath =~ s|^/dev/||;
+ return $devpath;
+}
+
+# Check if a disk or any of its partitions has a holder.
+# Can also be called with a partition.
+# Expected to be called with a result of verify_blockdev_path().
+sub has_holder {
+ my ($devpath) = @_;
+
+ my $dev = strip_dev($devpath);
+
+ return $devpath if !dir_is_empty("/sys/class/block/${dev}/holders");
+
+ my $found;
+ dir_glob_foreach("/sys/block/${dev}", "${dev}.+", sub {
+ my ($part) = @_;
+ $found = "/dev/${part}" if !dir_is_empty("/sys/class/block/${part}/holders");
+ });
+
+ return $found;
+}
+
+# Basic check if a disk or any of its partitions is mounted.
+# Can also be called with a partition.
+# Expected to be called with a result of verify_blockdev_path().
+sub is_mounted {
+ my ($devpath) = @_;
+
+ my $mounted = mounted_blockdevs();
+
+ return $devpath if $mounted->{$devpath};
+
+ my $dev = strip_dev($devpath);
+
+ my $found;
+ dir_glob_foreach("/sys/block/${dev}", "${dev}.+", sub {
+ my ($part) = @_;
+ my $partpath = "/dev/${part}";
+
+ $found = $partpath if $mounted->{$partpath};
+ });
+
+ return $found;
+}
+
+# Wipes all labels and the first 200 MiB of a disk/partition (or the whole if it is smaller).
+# Expected to be called with a result of verify_blockdev_path().
+sub wipe_blockdev {
+ my ($devpath) = @_;
+
+ my $devname = basename($devpath);
+ my $dev_size = PVE::Tools::file_get_contents("/sys/class/block/$devname/size");
+
+ ($dev_size) = $dev_size =~ m|(\d+)|; # untaint $dev_size
+ die "Couldn't get the size of the device $devname\n" if !defined($dev_size);
+
+ my $size = ($dev_size * 512 / 1024 / 1024);
+ my $count = ($size < 200) ? $size : 200;
+
+ my $to_wipe = [];
+ dir_glob_foreach("/sys/class/block/${devname}", "${devname}.+", sub {
+ my ($part) = @_;
+ push $to_wipe->@*, "/dev/${part}" if -b "/dev/${part}";
+ });
+
+ if (scalar($to_wipe->@*) > 0) {
+ print "found child partitions to wipe: ". join(', ', $to_wipe->@*) ."\n";
+ }
+ push $to_wipe->@*, $devpath; # put actual device last
+
+ print "wiping block device ${devpath}\n";
+
+ run_command(['wipefs', '--all', $to_wipe->@*], errmsg => "error wiping '${devpath}'");
+
+ run_command(
+ ['dd', 'if=/dev/zero', "of=${devpath}", 'bs=1M', 'conv=fdatasync', "count=${count}"],
+ errmsg => "error wiping '${devpath}'",
+ );
+}
+