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Check if system is our manager when resolvconf (#590)

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Sometimes resolvconf will manage the /etc/resolv.conf file
And systemd-resolved still the DNS manager
This commit is contained in:
Maycon Santos
2022-11-29 13:37:50 +01:00
committed by GitHub
parent ae500b63a7
commit 4a30b66503
2 changed files with 27 additions and 0 deletions
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17
client/internal/dns/systemd_linux.go
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@@ -20,11 +20,13 @@ const (
systemdDbusObjectNode = "/org/freedesktop/resolve1"
systemdDbusGetLinkMethod = systemdDbusManagerInterface + ".GetLink"
systemdDbusFlushCachesMethod = systemdDbusManagerInterface + ".FlushCaches"
systemdDbusResolvConfModeProperty = systemdDbusManagerInterface + ".ResolvConfMode"
systemdDbusLinkInterface = "org.freedesktop.resolve1.Link"
systemdDbusRevertMethodSuffix = systemdDbusLinkInterface + ".Revert"
systemdDbusSetDNSMethodSuffix = systemdDbusLinkInterface + ".SetDNS"
systemdDbusSetDefaultRouteMethodSuffix = systemdDbusLinkInterface + ".SetDefaultRoute"
systemdDbusSetDomainsMethodSuffix = systemdDbusLinkInterface + ".SetDomains"
systemdDbusResolvConfModeForeign = "foreign"
)
type systemdDbusConfigurator struct {
@@ -183,3 +185,18 @@ func (s *systemdDbusConfigurator) callLinkMethod(method string, value any) error
return nil
}
func getSystemdDbusProperty(property string, store any) error {
obj, closeConn, err := getDbusObject(systemdResolvedDest, systemdDbusObjectNode)
if err != nil {
return fmt.Errorf("got error while attempting to retrieve the systemd dns manager object, error: %s", err)
}
defer closeConn()
v, e := obj.GetProperty(property)
if e != nil {
return fmt.Errorf("got an error getting property %s: %v", property, e)
}
return v.Store(store)
}