public inbox for pve-devel@lists.proxmox.com
 help / color / mirror / Atom feed
From: Filip Schauer <f.schauer@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: [pve-devel] [PATCH container v2 2/4] extract passthrough device node creation to a helper
Date: Wed, 23 Apr 2025 14:56:38 +0200	[thread overview]
Message-ID: <20250423125640.88756-3-f.schauer@proxmox.com> (raw)
In-Reply-To: <20250423125640.88756-1-f.schauer@proxmox.com>

Signed-off-by: Filip Schauer <f.schauer@proxmox.com>
---
 src/PVE/LXC.pm            | 29 +++++++++++++++++++++++++++++
 src/lxc-pve-prestart-hook | 21 +--------------------
 2 files changed, 30 insertions(+), 20 deletions(-)

diff --git a/src/PVE/LXC.pm b/src/PVE/LXC.pm
index d929608..d985b88 100644
--- a/src/PVE/LXC.pm
+++ b/src/PVE/LXC.pm
@@ -6,6 +6,7 @@ use warnings;
 use Cwd qw();
 use Errno qw(ELOOP ENOTDIR EROFS ECONNREFUSED EEXIST);
 use Fcntl qw(O_RDONLY O_WRONLY O_NOFOLLOW O_DIRECTORY :mode);
+use File::Basename;
 use File::Path;
 use File::Spec;
 use IO::Poll qw(POLLIN POLLHUP);
@@ -1662,6 +1663,34 @@ sub run_with_loopdev {
     return $device;
 }
 
+sub create_passthrough_device_node($$$$$) {
+    my ($passthrough_dir, $device, $mode, $rdev, $id_map) = @_;
+
+    # Create the device node
+    my $passthrough_device_path = $passthrough_dir . $device->{path};
+    File::Path::make_path(dirname($passthrough_device_path));
+    PVE::Tools::mknod($passthrough_device_path, $mode, $rdev)
+	or die("failed to mknod $passthrough_device_path: $!\n");
+
+    # Use chmod because umask could mess with the access mode on mknod
+    my $passthrough_mode = 0660;
+    $passthrough_mode = oct($device->{mode}) if defined($device->{mode});
+    chmod $passthrough_mode, $passthrough_device_path
+	or die "failed to chmod $passthrough_mode $passthrough_device_path: $!\n";
+
+    # Set uid and gid of the device node
+    my $uid = 0;
+    my $gid = 0;
+    $uid = $device->{uid} if defined($device->{uid});
+    $gid = $device->{gid} if defined($device->{gid});
+    $uid = PVE::LXC::map_ct_uid_to_host($uid, $id_map);
+    $gid = PVE::LXC::map_ct_gid_to_host($gid, $id_map);
+    chown $uid, $gid, $passthrough_device_path
+	or die("failed to chown $uid:$gid $passthrough_device_path: $!\n");
+
+    return $passthrough_device_path;
+}
+
 # In scalar mode: returns a file handle to the deepest directory node.
 # In list context: returns a list of:
 #   * the deepest directory node
diff --git a/src/lxc-pve-prestart-hook b/src/lxc-pve-prestart-hook
index fdaead2..61dfb3b 100755
--- a/src/lxc-pve-prestart-hook
+++ b/src/lxc-pve-prestart-hook
@@ -144,26 +144,7 @@ PVE::LXC::Tools::lxc_hook('pre-start', 'lxc', sub {
 	die "Could not get mode or device ID of $absolute_path\n"
 	    if (!defined($mode) || !defined($rdev));
 
-	my $passthrough_device_path = $passthrough_dir . $absolute_path;
-	File::Path::make_path(dirname($passthrough_device_path));
-	PVE::Tools::mknod($passthrough_device_path, $mode, $rdev)
-	    or die("failed to mknod $passthrough_device_path: $!\n");
-
-	# Use chmod because umask could mess with the access mode on mknod
-	my $passthrough_mode = 0660;
-	$passthrough_mode = oct($device->{mode}) if defined($device->{mode});
-	chmod $passthrough_mode, $passthrough_device_path
-	    or die "failed to chmod $passthrough_mode $passthrough_device_path: $!\n";
-
-	# Set uid and gid of the device node
-	my $uid = 0;
-	my $gid = 0;
-	$uid = $device->{uid} if defined($device->{uid});
-	$gid = $device->{gid} if defined($device->{gid});
-	$uid = PVE::LXC::map_ct_uid_to_host($uid, $id_map);
-	$gid = PVE::LXC::map_ct_gid_to_host($gid, $id_map);
-	chown $uid, $gid, $passthrough_device_path
-	    or die("failed to chown $uid:$gid $passthrough_device_path: $!\n");
+	PVE::LXC::create_passthrough_device_node($passthrough_dir, $device, $mode, $rdev, $id_map);
 
 	push @$passthrough_devices, [$absolute_path, $mode, $rdev];
     };
-- 
2.39.5



_______________________________________________
pve-devel mailing list
pve-devel@lists.proxmox.com
https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel


  parent reply	other threads:[~2025-04-23 12:57 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-23 12:56 [pve-devel] [PATCH container v2 0/4] implement device hotplug Filip Schauer
2025-04-23 12:56 ` [pve-devel] [PATCH container v2 1/4] extract apparmor profile & namespace switch to a helper Filip Schauer
2025-04-23 12:56 ` Filip Schauer [this message]
2025-04-23 12:56 ` [pve-devel] [PATCH container v2 3/4] config: support printing a device Filip Schauer
2025-04-23 12:56 ` [pve-devel] [PATCH container v2 4/4] implement device hotplug Filip Schauer

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20250423125640.88756-3-f.schauer@proxmox.com \
    --to=f.schauer@proxmox.com \
    --cc=pve-devel@lists.proxmox.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Service provided by Proxmox Server Solutions GmbH | Privacy | Legal