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From: Filip Schauer <f.schauer@proxmox.com>
To: pve-devel@lists.proxmox.com
Date: Mon, 29 Jan 2024 15:29:11 +0100
Message-Id: <20240129142911.120475-1-f.schauer@proxmox.com>
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Subject: [pve-devel] [PATCH container] Fix invalid device passthrough being
added to config
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Fix a bug that allows a device passthrough entry to be added to the
config despite the device path not pointing to a device. Previously,
adding an invalid device passthrough entry would throw an error, but the
entry would still be added to the config. This is fixed by moving the
respective checks from update_lxc_config to update_pct_config, which is
run before the entry is written to the config file.
Signed-off-by: Filip Schauer <f.schauer@proxmox.com>
---
src/PVE/LXC.pm | 8 --------
src/PVE/LXC/Config.pm | 19 ++++++++++++++++++-
2 files changed, 18 insertions(+), 9 deletions(-)
diff --git a/src/PVE/LXC.pm b/src/PVE/LXC.pm
index 7883cfb..f0c000b 100644
--- a/src/PVE/LXC.pm
+++ b/src/PVE/LXC.pm
@@ -643,20 +643,12 @@ sub update_lxc_config {
PVE::LXC::Config->foreach_passthrough_device($conf, sub {
my ($key, $device) = @_;
- die "Path is not defined for passthrough device $key"
- unless (defined($device->{path}));
-
my $absolute_path = $device->{path};
my ($mode, $rdev) = (stat($absolute_path))[2, 6];
- die "Device $absolute_path does not exist\n" if $! == ENOENT;
-
die "Error accessing device $absolute_path\n"
if (!defined($mode) || !defined($rdev));
- die "$absolute_path is not a device\n"
- if (!S_ISBLK($mode) && !S_ISCHR($mode));
-
my $major = PVE::Tools::dev_t_major($rdev);
my $minor = PVE::Tools::dev_t_minor($rdev);
my $device_type_char = S_ISBLK($mode) ? 'b' : 'c';
diff --git a/src/PVE/LXC/Config.pm b/src/PVE/LXC/Config.pm
index 5ac1446..4ea103e 100644
--- a/src/PVE/LXC/Config.pm
+++ b/src/PVE/LXC/Config.pm
@@ -3,7 +3,8 @@ package PVE::LXC::Config;
use strict;
use warnings;
-use Fcntl qw(O_RDONLY);
+use Errno qw(ENOENT);
+use Fcntl qw(O_RDONLY :mode);
use PVE::AbstractConfig;
use PVE::Cluster qw(cfs_register_file);
@@ -1193,6 +1194,22 @@ sub update_pct_config {
die "$opt: MTU size '$mtu' is bigger than bridge MTU '$bridge_mtu'\n"
if ($mtu > $bridge_mtu);
}
+ } elsif ($opt =~ m/^dev(\d+)$/) {
+ my $device = $class->parse_device($value);
+
+ die "Path is not defined for passthrough device $opt"
+ unless (defined($device->{path}));
+
+ my $absolute_path = $device->{path};
+ my ($mode, $rdev) = (stat($absolute_path))[2, 6];
+
+ die "Device $absolute_path does not exist\n" if $! == ENOENT;
+
+ die "Error accessing device $absolute_path\n"
+ if (!defined($mode) || !defined($rdev));
+
+ die "$absolute_path is not a device\n"
+ if (!S_ISBLK($mode) && !S_ISCHR($mode));
}
$conf->{pending}->{$opt} = $value;
$class->remove_from_pending_delete($conf, $opt);
--
2.39.2