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NAME |SYNOPSIS |DESCRIPTION |RETURN VALUE |NOTES |HISTORY |SEE ALSO |COLOPHON | |
SD_EV...AILURE(3) sd_event_source_set_exit_on_failureSD_EV...AILURE(3)sd_event_source_set_exit_on_failure, sd_event_source_get_exit_on_failure - Set or retrieve the exit-on-failure feature of event sources
#include <systemd/sd-event.h>int sd_event_source_set_exit_on_failure(sd_event_source *source,intb);int sd_event_source_get_exit_on_failure(sd_event_source *source);
sd_event_source_set_exit_on_failure()may be used to set/unset the exit-on-failure flag of the event source object specified assource. The flag defaults to off. If on and the callback function set for the event source returns a failure code (i.e. a negative value) the event loop is exited too, using the callback return code as the exit code forsd_event_exit(3). If off, the event source is disabled but the event loop continues to run. Setting this flag is useful for "dominant" event sources that define the purpose and reason for the event loop, and whose failure hence should propagate to the event loop itself — as opposed to "auxiliary" event sources whose failures should remain local and affect the event source, but not propagate further.sd_event_source_get_exit_on_failure()may be used to query the flag currently set for the event source objectsource.
On success,sd_event_source_set_exit_on_failure()returns a non-negative integer.sd_event_source_get_exit_on_failure() returns 0 if the flag is off, > 0 if the flag is on. On failure, both return a negative errno-style error code.Errors Returned errors may indicate the following problems:-EINVALsource is not a valid pointer to an sd_event_source object. Added in version 247.-EDOM The event source refers to an exit event source (as created withsd_event_add_exit(3)), for which this functionality is not supported. Added in version 247.
Functions described here are available as a shared library, which can be compiled against and linked to with thelibsystemd pkg-config(1) file. The code described here usesgetenv(3), which is declared to be not multi-thread-safe. This means that the code calling the functions described here must not callsetenv(3) from a parallel thread. It is recommended to only do calls tosetenv()from an early phase of the program when no other threads have been started.
sd_event_source_set_exit_on_failure()andsd_event_source_get_exit_on_failure()were added in version 247.
sd-event(3),sd_event_add_io(3),sd_event_add_time(3),sd_event_add_signal(3),sd_event_add_child(3),sd_event_add_inotify(3),sd_event_add_defer(3)
This page is part of thesystemd (systemd system and service manager) project. Information about the project can be found at ⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a bug report for this manual page, see ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩. This page was obtained from the project's upstream Git repository ⟨https://github.com/systemd/systemd.git⟩ on 2025-08-11. (At that time, the date of the most recent commit that was found in the repository was 2025-08-11.) If you discover any rendering problems in this HTML version of the page, or you believe there is a better or more up-to-date source for the page, or you have corrections or improvements to the information in this COLOPHON (which isnot part of the original manual page), send a mail to man-pages@man7.orgsystemd 258~rc2SD_EV...AILURE(3)Pages that refer to this page:sd_event_add_child(3), sd_event_add_defer(3), sd_event_add_io(3), sd_event_add_signal(3), sd_event_add_time(3), systemd.directives(7), systemd.index(7)
HTML rendering created 2025-09-06 byMichael Kerrisk, author ofThe Linux Programming Interface. For details of in-depthLinux/UNIX system programming training courses that I teach, lookhere. Hosting byjambit GmbH. | |