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getdns_context...pdate_callback(3) getdns getdns_context...pdate_callback(3) NAME getdns_context_set_context_update_callback -- get informed on getdns context updates LIBRARY DNS Resolver library (libgetdns, -lgetdns) SYNOPSIS #include <getdns.h> getdns_return_t getdns_context_set_context_update_callback (getdns_context ** context, void (*cbfun)(getdns_context *context, getdns_context_code_t changed_item) DESCRIPTION Changes to the context such as in response to system files that affect the contet (/etc/resolv.conf etc.) trigger a call to the callback func- tion specified as cbfun context a previously initialized context cbfun callback function to invoked when the specified context changes. If this argument is NULL then updates to the context will not invoke a callback. RETURN VALUES Upon successful completion each of these functions return GETDNS_RE- TURN_GOOD , otherwise the following error values are returned: GETDNS_RETURN_GENERIC_ERROR memory allocation failed or some other un- toward thing happened GETDNS_RETURN_BAD_CONTEXT if the context pointer is invalid EXAMPLES TBD SEE ALSO libgetdns(3), getdns_context_create(3), getdns_context_set(3), getdns_context_set_context_update_callback(3), getdns 1.7.3 December 20getdns_context...pdate_callback(3)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | EXAMPLES | SEE ALSO
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