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-rw-r--r--units/systemd-hostnamed.service.in3
1 files changed, 2 insertions, 1 deletions
diff --git a/units/systemd-hostnamed.service.in b/units/systemd-hostnamed.service.in
index 993134f3d6..da74b4fe8b 100644
--- a/units/systemd-hostnamed.service.in
+++ b/units/systemd-hostnamed.service.in
@@ -29,7 +29,8 @@ MemoryDenyWriteExecute=yes
RestrictRealtime=yes
RestrictNamespaces=yes
RestrictAddressFamilies=AF_UNIX
-SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module @mount @obsolete @raw-io @reboot @swap
+SystemCallFilter=@system-service sethostname
+SystemCallErrorNumber=EPERM
SystemCallArchitectures=native
LockPersonality=yes
IPAddressDeny=any