1QB_LOG_FILTER_FN_SET(3)    libqb Programmer's Manual   QB_LOG_FILTER_FN_SET(3)
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NAME

6       qb_log_filter_fn_set  -  Instead of using the qb_log_filter_ctl() func‐
7       tions you can apply the filters manually by  defining  a  callback  and
8       setting  the  targets  field using qb_bit_set() and qb_bit_clear() like
9       the following below:
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SYNOPSIS

13       #include <qb/qblog.h>
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15       int32_t qb_log_filter_fn_set(
16           qb_log_filter_fn  fn
17       );
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DESCRIPTION

20       static void
21       m_filter(struct qb_log_callsite *cs)
22       {
23               if ((cs->priority >= LOG_ALERT &&
24                    cs->priority <= LOG_DEBUG) &&
25                    strcmp(cs->filename, "my_c_file.c") == 0) {
26                       qb_bit_set(cs->targets, QB_LOG_SYSLOG);
27               } else {
28                       qb_bit_clear(cs->targets, QB_LOG_SYSLOG);
29               }
30       }
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SEE ALSO

34       qb_log_from_external_source_va2(3), qb_log_thread_start(3),
35       qb_log_target_user_data_get(3), qb_log_tags_stringify_fn_set(3),
36       qb_log_file_reopen(3), qb_log_fini(3), qb_log_callsites_dump(3),
37       qb_log_ctl2(3), qb_log_target_user_data_set(3),
38       qb_log_target_format(3), qb_log_thread_priority_set(3),
39       qb_log_facility2int(3), qb_log_callsites_register(3),
40       qb_log_filter_ctl2(3), qb_log_file_close(3), qb_log_format_set(3),
41       qb_log_real_(3), qb_log_from_external_source_va(3),
42       qb_log_callsite_get(3), qb_log_blackbox_write_to_file(3),
43       qb_log_real_va_(3), qb_log_from_external_source(3),
44       qb_log_blackbox_print_from_file(3), qb_log_facility2str(3),
45       qb_log_callsite_get2(3), qb_log_ctl(3), qb_log_filter_ctl(3),
46       qb_log_custom_close(3), qb_log_init(3), qb_log_file_open(3),
47       qb_log_custom_open(3)
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50       Copyright (c) 2017 Red Hat, Inc.
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54LIBQB                             2023-07-21           QB_LOG_FILTER_FN_SET(3)
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