qb_log_filter_fn_set(3)

qb_log_filter_fn_set3

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:

Usage

#include <qb/qblog.h>

int32_t qb_log_filter_fn_set(
    qb_log_filter_fn  fn
);

Overview

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);
        }
}

Releases

4 releases since Debian 11 (Bullseye); the text changed 3 times.

  1. 11
  2. 12
  3. 13
  4. Arch

From libqb 2.0.10-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.