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sd-id128: also refuse an empty invocation ID
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@ -139,7 +139,8 @@
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<listitem><para>Returned by <function>sd_id128_get_machine()</function> and
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<function>sd_id128_get_machine_app_specific()</function> when <filename>/etc/machine-id</filename>
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is empty or all zeros.</para></listitem>
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is empty or all zeros. Also returned by <function>sd_id128_get_invocation()</function> when the
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invocation ID is all zeros.</para></listitem>
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</varlistentry>
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<varlistentry>
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@ -284,6 +284,9 @@ _public_ int sd_id128_get_invocation(sd_id128_t *ret) {
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r = get_invocation_from_keyring(&saved_invocation_id);
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if (r < 0)
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return r;
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if (sd_id128_is_null(saved_invocation_id))
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return -ENOMEDIUM;
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}
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if (ret)
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