x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
SD_BUS_SLOT_SET_DESCRIPTIOsd_bus_slot_set_descriSD_BUS_SLOT_SET_DESCRIPTION(3)
NAME
sd_bus_slot_set_description, sd_bus_slot_get_description - Set or query
the description of bus slot objects
SYNOPSIS
#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
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. The description argument
may be NULL, in which case the description is unset.
sd_bus_slot_get_description() returns a description string in
description. If the string is not set, e.g. with
sd_bus_slot_set_description(), and the slot is a bus match callback
slot, the match string will be returned. Otherwise, -ENXIO is returned.
RETURN VALUE
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 is NULL.
-ENXIO
The bus slot object has no description.
-ENOMEM
Memory allocation failed.
NOTES
Functions described here are available as a shared library, which can
be compiled against and linked to with the libsystemd pkg-config(1)
file.
The code described here uses getenv(3), which is declared to be not
multi-thread-safe. This means that the code calling the functions
described here must not call setenv(3) from a parallel thread. It is
recommended to only do calls to setenv() from an early phase of the
program when no other threads have been started.
SEE ALSO
systemd(1), sd-bus(3) sd_bus_slot_ref(3), sd_bus_slot_set_userdata(3)
systemd 254 SD_BUS_SLOT_SET_DESCRIPTION(3)
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