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sd_bus_slot_set_description(3) — Linux manual page

SD_BUS_...CRIPTION(3)  sd_bus_slot_set_descriptionSD_BUS_...CRIPTION(3)

NAME        top

       sd_bus_slot_set_description, sd_bus_slot_get_description - Set or       query the description of bus slot objects

SYNOPSIS        top

#include <systemd/sd-bus.h>int sd_bus_slot_set_description(sd_bus_slot*slot,const char *description);int sd_bus_slot_get_description(sd_bus_slot*bus,const char **description);

DESCRIPTION        top

sd_bus_slot_set_description()sets the description string that is       used in logging to the specified string. The string is copied       internally and freed when the bus slot object is deallocated. Thedescription argument may beNULL, in which case the description is       unset.sd_bus_slot_get_description()returns a description string indescription. If the string is not set, e.g. withsd_bus_slot_set_description(), and the slot is a bus match       callback slot, the match string will be returned. Otherwise,-ENXIOis returned.

RETURN VALUE        top

       On success, these functions return 0 or a positive integer. On       failure, they return a negative errno-style error code.Errors       Returned errors may indicate the following problems:-EINVAL           An required argument isNULL.-ENXIO           The bus slot object has no description.-ENOMEM           Memory allocation failed.

NOTES        top

       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.

HISTORY        top

sd_bus_slot_set_description()andsd_bus_slot_get_description()       were added in version 240.

SEE ALSO        top

systemd(1),sd-bus(3),sd_bus_slot_ref(3),sd_bus_slot_set_userdata(3)

COLOPHON        top

       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_BUS_...CRIPTION(3)

Pages that refer to this page:sd-bus(3), systemd.directives(7), systemd.index(7)

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