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From: Hannes Duerr <h.duerr@proxmox.com>
To: pve-devel@lists.proxmox.com
Date: Wed, 6 Dec 2023 08:47:42 +0100
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Subject: [pve-devel] [PATCH v6 qemu-server 1/4] Move path_is_scsi to
QemuServer/Drive.pm
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Prepare for introduction of new helper
Signed-off-by: Hannes Duerr <h.duerr@proxmox.com>
---
PVE/QemuServer.pm | 62 +---------------------------------------
PVE/QemuServer/Drive.pm | 63 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 64 insertions(+), 61 deletions(-)
diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 2063e66..7e69924 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -53,7 +53,7 @@ use PVE::QemuServer::Helpers qw(config_aware_timeout min_version windows_version
use PVE::QemuServer::Cloudinit;
use PVE::QemuServer::CGroup;
use PVE::QemuServer::CPUConfig qw(print_cpu_device get_cpu_options);
-use PVE::QemuServer::Drive qw(is_valid_drivename drive_is_cloudinit drive_is_cdrom drive_is_read_only parse_drive print_drive);
+use PVE::QemuServer::Drive qw(is_valid_drivename drive_is_cloudinit drive_is_cdrom drive_is_read_only parse_drive print_drive path_is_scsi);
use PVE::QemuServer::Machine;
use PVE::QemuServer::Memory qw(get_current_memory);
use PVE::QemuServer::Monitor qw(mon_cmd);
@@ -1365,66 +1365,6 @@ sub assert_clipboard_config {
}
}
-sub scsi_inquiry {
- my($fh, $noerr) = @_;
-
- my $SG_IO = 0x2285;
- my $SG_GET_VERSION_NUM = 0x2282;
-
- my $versionbuf = "\x00" x 8;
- my $ret = ioctl($fh, $SG_GET_VERSION_NUM, $versionbuf);
- if (!$ret) {
- die "scsi ioctl SG_GET_VERSION_NUM failoed - $!\n" if !$noerr;
- return;
- }
- my $version = unpack("I", $versionbuf);
- if ($version < 30000) {
- die "scsi generic interface too old\n" if !$noerr;
- return;
- }
-
- my $buf = "\x00" x 36;
- my $sensebuf = "\x00" x 8;
- my $cmd = pack("C x3 C x1", 0x12, 36);
-
- # see /usr/include/scsi/sg.h
- my $sg_io_hdr_t = "i i C C s I P P P I I i P C C C C S S i I I";
-
- my $packet = pack(
- $sg_io_hdr_t, ord('S'), -3, length($cmd), length($sensebuf), 0, length($buf), $buf, $cmd, $sensebuf, 6000
- );
-
- $ret = ioctl($fh, $SG_IO, $packet);
- if (!$ret) {
- die "scsi ioctl SG_IO failed - $!\n" if !$noerr;
- return;
- }
-
- my @res = unpack($sg_io_hdr_t, $packet);
- if ($res[17] || $res[18]) {
- die "scsi ioctl SG_IO status error - $!\n" if !$noerr;
- return;
- }
-
- my $res = {};
- $res->@{qw(type removable vendor product revision)} = unpack("C C x6 A8 A16 A4", $buf);
-
- $res->{removable} = $res->{removable} & 128 ? 1 : 0;
- $res->{type} &= 0x1F;
-
- return $res;
-}
-
-sub path_is_scsi {
- my ($path) = @_;
-
- my $fh = IO::File->new("+<$path") || return;
- my $res = scsi_inquiry($fh, 1);
- close($fh);
-
- return $res;
-}
-
sub print_tabletdevice_full {
my ($conf, $arch) = @_;
diff --git a/PVE/QemuServer/Drive.pm b/PVE/QemuServer/Drive.pm
index e24ba12..f3fbaaa 100644
--- a/PVE/QemuServer/Drive.pm
+++ b/PVE/QemuServer/Drive.pm
@@ -5,6 +5,8 @@ use warnings;
use Storable qw(dclone);
+use IO::File;
+
use PVE::Storage;
use PVE::JSONSchema qw(get_standard_option);
@@ -17,6 +19,7 @@ drive_is_cdrom
drive_is_read_only
parse_drive
print_drive
+path_is_scsi
);
our $QEMU_FORMAT_RE = qr/raw|cow|qcow|qcow2|qed|vmdk|cloop/;
@@ -760,4 +763,64 @@ sub resolve_first_disk {
return;
}
+sub scsi_inquiry {
+ my($fh, $noerr) = @_;
+
+ my $SG_IO = 0x2285;
+ my $SG_GET_VERSION_NUM = 0x2282;
+
+ my $versionbuf = "\x00" x 8;
+ my $ret = ioctl($fh, $SG_GET_VERSION_NUM, $versionbuf);
+ if (!$ret) {
+ die "scsi ioctl SG_GET_VERSION_NUM failoed - $!\n" if !$noerr;
+ return;
+ }
+ my $version = unpack("I", $versionbuf);
+ if ($version < 30000) {
+ die "scsi generic interface too old\n" if !$noerr;
+ return;
+ }
+
+ my $buf = "\x00" x 36;
+ my $sensebuf = "\x00" x 8;
+ my $cmd = pack("C x3 C x1", 0x12, 36);
+
+ # see /usr/include/scsi/sg.h
+ my $sg_io_hdr_t = "i i C C s I P P P I I i P C C C C S S i I I";
+
+ my $packet = pack(
+ $sg_io_hdr_t, ord('S'), -3, length($cmd), length($sensebuf), 0, length($buf), $buf, $cmd, $sensebuf, 6000
+ );
+
+ $ret = ioctl($fh, $SG_IO, $packet);
+ if (!$ret) {
+ die "scsi ioctl SG_IO failed - $!\n" if !$noerr;
+ return;
+ }
+
+ my @res = unpack($sg_io_hdr_t, $packet);
+ if ($res[17] || $res[18]) {
+ die "scsi ioctl SG_IO status error - $!\n" if !$noerr;
+ return;
+ }
+
+ my $res = {};
+ $res->@{qw(type removable vendor product revision)} = unpack("C C x6 A8 A16 A4", $buf);
+
+ $res->{removable} = $res->{removable} & 128 ? 1 : 0;
+ $res->{type} &= 0x1F;
+
+ return $res;
+}
+
+sub path_is_scsi {
+ my ($path) = @_;
+
+ my $fh = IO::File->new("+<$path") || return;
+ my $res = scsi_inquiry($fh, 1);
+ close($fh);
+
+ return $res;
+}
+
1;
--
2.39.2