krb5_cc_lock -  Lock a credential cache. 
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.. c:function:: krb5_error_code krb5_cc_lock(krb5_context context, krb5_ccache ccache)

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:param:

	          **[in]** **context** - Library context

	          **[in]** **ccache** - Credential cache handle


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:retval:
         -   0   Success; otherwise - Kerberos error codes


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Use :c:func:`krb5_cc_unlock()` to unlock the lock.










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