api: add usb list in hardware endpoint

As envisioned in[0][1], better late than never.

[0]: commit 523d5f486b
[1]: https://lists.proxmox.com/pipermail/pve-devel/2018-November/034694.html

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

PVE/API2/Hardware.pm

@@ -7,6 +7,7 @@ use PVE::JSONSchema qw(get_standard_option);
 use PVE::RESTHandler;
 
 use PVE::API2::Hardware::PCI;
+use PVE::API2::Hardware::USB;
 
 use base qw(PVE::RESTHandler);
 
@@ -15,6 +16,12 @@ __PACKAGE__->register_method ({
     path => 'pci',
 });
 
+__PACKAGE__->register_method ({
+    subclass => "PVE::API2::Hardware::USB",
+    path => 'usb',
+});
+
+
 __PACKAGE__->register_method ({
     name => 'index',
     path => '',
@@ -42,7 +49,7 @@ __PACKAGE__->register_method ({
 
 	my $res = [
 	    { type => 'pci' },
-	    # TODO: move usb scan here (6.0 api change)
+	    { type => 'usb' },
 	];
 
 	return $res;

PVE/API2/Hardware/Makefile

@@ -1,7 +1,8 @@
 include ../../../defines.mk
 
 PERLSOURCE=			\
-	PCI.pm
+	PCI.pm			\
+	USB.pm			\
 
 all:
 

PVE/API2/Hardware/USB.pm

@@ -0,0 +1,53 @@
+package PVE::API2::Hardware::USB;
+
+use strict;
+use warnings;
+
+use PVE::JSONSchema qw(get_standard_option);
+
+use PVE::SysFSTools;
+
+use base qw(PVE::RESTHandler);
+
+__PACKAGE__->register_method({
+    name => 'usbscan',
+    path => '',
+    method => 'GET',
+    description => "List local USB devices.",
+    protected => 1,
+    proxyto => "node",
+    permissions => {
+	check => ['perm', '/', ['Sys.Modify']],
+    },
+    parameters => {
+	additionalProperties => 0,
+	properties => {
+	    node => get_standard_option('pve-node'),
+	},
+    },
+    returns => {
+	type => 'array',
+	items => {
+	    type => "object",
+	    properties => {
+		busnum => { type => 'integer'},
+		class => { type => 'integer'},
+		devnum => { type => 'integer'},
+		level => { type => 'integer'},
+		manufacturer => { type => 'string', optional => 1 },
+		port => { type => 'integer'},
+		prodid => { type => 'string'},
+		product => { type => 'string', optional => 1 },
+		serial => { type => 'string', optional => 1 },
+		speed => { type => 'string'},
+		usbpath => { type => 'string', optional => 1},
+		vendid => { type => 'string'},
+	    },
+	},
+    },
+    code => sub {
+	my ($param) = @_;
+
+	return PVE::SysFSTools::scan_usb();
+    }
+});