sd_journal_get_fd, sd_journal_get_events, sd_journal_get_timeout, sd_journal_process, sd_journal_wait, sd_journal_reliable_fd − Journal change notification interface
#include <elogind/sd−journal.h>
int sd_journal_get_fd(sd_journal *j); |
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int sd_journal_get_events(sd_journal *j); |
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int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec); |
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int sd_journal_process(sd_journal *j); |
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int sd_journal_wait(sd_journal *j, uint64_t timeout_usec); |
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int sd_journal_reliable_fd(sd_journal *j); |
As elogind can not open any systemd journals, the functions sd_journal_get_fd, sd_journal_get_events, sd_journal_get_timeout, sd_journal_process, sd_journal_wait and sd_journal_reliable_fd do nothing.
All of the functions sd_journal_get_fd, sd_journal_get_events, sd_journal_get_timeout, sd_journal_process and sd_journal_wait return −ENOSYS. sd_journal_reliable_fd returns 1.
elogind(8),
sd_journal_open(3), sd_journal_next(3), poll(2), clock_gettime(2)