QB_LOG_FILTER_FN_SET(3)    libqb Programmer's Manual   QB_LOG_FILTER_FN_SET(3)

NAME
       qb_log_filter_fn_set - Instead of using the qb_log_filter_ctl()
       functions you can apply the filters manually by defining a callback and
       setting the targets field using qb_bit_set() and qb_bit_clear() like
       the following below:


SYNOPSIS
       #include <qb/qblog.h>

       int32_t qb_log_filter_fn_set(
           qb_log_filter_fn  fn
       );

DESCRIPTION
       static void
       m_filter(struct qb_log_callsite *cs)
       {
               if ((cs->priority >= LOG_ALERT &&
                    cs->priority <= LOG_DEBUG) &&
                    strcmp(cs->filename, "my_c_file.c") == 0) {
                       qb_bit_set(cs->targets, QB_LOG_SYSLOG);
               } else {
                       qb_bit_clear(cs->targets, QB_LOG_SYSLOG);
               }
       }


SEE ALSO
       qb_log_from_external_source_va2(3), qb_log_thread_start(3),
       qb_log_target_user_data_get(3), qb_log_tags_stringify_fn_set(3),
       qb_log_file_reopen(3), qb_log_fini(3), qb_log_callsites_dump(3),
       qb_log_ctl2(3), qb_log_target_user_data_set(3),
       qb_log_target_format(3), qb_log_thread_priority_set(3),
       qb_log_facility2int(3), qb_log_callsites_register(3),
       qb_log_filter_ctl2(3), qb_log_file_close(3), qb_log_format_set(3),
       qb_log_real_(3), qb_log_from_external_source_va(3),
       qb_log_callsite_get(3), qb_log_blackbox_write_to_file(3),
       qb_log_real_va_(3), qb_log_from_external_source(3),
       qb_log_blackbox_print_from_file(3), qb_log_facility2str(3),
       qb_log_callsite_get2(3), qb_log_ctl(3), qb_log_filter_ctl(3),
       qb_log_custom_close(3), qb_log_init(3), qb_log_file_open(3),
       qb_log_custom_open(3)

COPYRIGHT
       Copyright (c) 2017 Red Hat, Inc.

LIBQB                             2021-03-03           QB_LOG_FILTER_FN_SET(3)