[pve-devel] [PATCH container 2/2] setup: also set contents of /etc/timezone
Fabian Ebner
f.ebner at proxmox.com
Thu Oct 7 12:48:03 CEST 2021
Some distributions like CentOS 8 and Gentoo don't have the file, so
only update if it already existed.
A slight change in behavior in set_timezone is that the warning will
now trigger if /etc/localtime is a link to $tz_path, but $tz_path does
not exist. Previously, it would return early if the link matched.
Programs that rely on /etc/timezone within the container will now see
the configured timezone too. While that is more correct, it's still a
change that might be unexpected.
Reported in the community forum:
https://forum.proxmox.com/threads/pct-create-command-with-timezone-host-option-fails-to-create-a-container.97538/
Signed-off-by: Fabian Ebner <f.ebner at proxmox.com>
---
Does this need to wait until PVE 8.0, because of potential breakage?
src/PVE/LXC/Setup.pm | 1 +
src/PVE/LXC/Setup/Base.pm | 16 +++++++++++-----
2 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/src/PVE/LXC/Setup.pm b/src/PVE/LXC/Setup.pm
index 7c377ab..5cc56af 100644
--- a/src/PVE/LXC/Setup.pm
+++ b/src/PVE/LXC/Setup.pm
@@ -114,6 +114,7 @@ sub new {
# Cache some host files we need access to:
$plugin->{host_resolv_conf} = PVE::INotify::read_file('resolvconf');
+ $plugin->{host_timezone} = PVE::INotify::read_file('timezone');
abs_path('/etc/localtime') =~ m|^(/.+)| or die "invalid /etc/localtime\n"; # untaint
$plugin->{host_localtime} = $1;
diff --git a/src/PVE/LXC/Setup/Base.pm b/src/PVE/LXC/Setup/Base.pm
index 04332ea..dafd69a 100644
--- a/src/PVE/LXC/Setup/Base.pm
+++ b/src/PVE/LXC/Setup/Base.pm
@@ -469,12 +469,18 @@ sub set_timezone {
$tz_path = $self->{host_localtime};
}
- return if abs_path('/etc/localtime') eq $tz_path;
-
if ($self->ct_file_exists($tz_path)) {
- my $tmpfile = "localtime.$$.new.tmpfile";
- $self->ct_symlink($tz_path, $tmpfile);
- $self->ct_rename($tmpfile, "/etc/localtime");
+ if (abs_path('/etc/localtime') ne $tz_path) {
+ my $tmpfile = "localtime.$$.new.tmpfile";
+ $self->ct_symlink($tz_path, $tmpfile);
+ $self->ct_rename($tmpfile, "/etc/localtime");
+ }
+
+ # not all distributions have /etc/timezone
+ if ($self->ct_file_exists('/etc/timezone')) {
+ my $contents = $zoneinfo eq 'host' ? $self->{host_timezone} : $zoneinfo;
+ $self->ct_file_set_contents('/etc/timezone', "$contents\n");
+ }
} else {
warn "container does not have $tz_path, timezone can not be modified\n";
}
--
2.30.2
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