[pve-devel] applied: [PATCH common 1/3] SysFSTools: add verbose flag to pci_device_info

[Thomas Lamprecht]

On 21.06.21 15:55, Dominik Csapak wrote:
> to also get the subsystem_vendor and device, as well as the
> iommu group and mediated device support
> 
> Signed-off-by: Dominik Csapak <d.csapak at proxmox.com>
> ---
>  src/PVE/SysFSTools.pm | 29 +++++++++++++++++++++++++----
>  1 file changed, 25 insertions(+), 4 deletions(-)
> 

applied, thanks - one question below though.


> @@ -225,6 +227,25 @@ sub pci_device_info {
>  	has_fl_reset => -f "$pcisysfs/devices/$name/reset" || 0,
>      };
>  
> +    if ($verbose) {
> +	my $sub_vendor = file_read_firstline("$devdir/subsystem_vendor");
> +	$sub_vendor =~ s/^0x// if defined($sub_vendor);
> +	my $sub_device = file_read_firstline("$devdir/subsystem_device");
> +	$sub_device =~ s/^0x// if defined($sub_device);
> +
> +	$res->{subsystem_vendor} = $sub_vendor if defined($sub_vendor);
> +	$res->{subsystem_device} = $sub_device if defined($sub_device);
> +
> +	if (-e "$devdir/iommu_group") {
> +	    my ($iommugroup) = (readlink("$devdir/iommu_group") =~ m/\/(\d+)$/);
> +	    $res->{iommugroup} = int($iommugroup);
just to be sure: int() warns if it gets an undefined value, but I'd guess that once
"$devdir/iommu_group" exists it's basically guaranteed that we get the integer match
at end-of-string above?