1SD_BUS_SLOT_SET_DESCRIPTIONs(d3_)bus_slot_set_descripStDi_oBnUS_SLOT_SET_DESCRIPTION(3)
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NAME

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

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

19       sd_bus_slot_set_description() sets the description string that is used
20       in logging to the specified string. The string is copied internally and
21       freed when the bus slot object is deallocated. The description argument
22       may be NULL, in which case the description is unset.
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24       sd_bus_slot_get_description() returns a description string in
25       description. If the string is not set, e.g. with
26       sd_bus_slot_set_description(), and the slot is a bus match callback
27       slot, the match string will be returned. Otherwise, -ENXIO is returned.
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RETURN VALUE

30       On success, these functions return 0 or a positive integer. On failure,
31       they return a negative errno-style error code.
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33   Errors
34       Returned errors may indicate the following problems:
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36       -EINVAL
37           An required argument is NULL.
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39       -ENXIO
40           The bus slot object has no description.
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42       -ENOMEM
43           Memory allocation failed.
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NOTES

46       These APIs are implemented as a shared library, which can be compiled
47       and linked to with the libsystemd pkg-config(1) file.
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SEE ALSO

50       systemd(1), sd-bus(3) sd_bus_slot_ref(3), sd_bus_slot_set_userdata(3)
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54systemd 249                                     SD_BUS_SLOT_SET_DESCRIPTION(3)
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