sd_bus_can_send(3) — Linux manual page


SD_BUS_CAN_SEND(3)             sd_bus_can_send            SD_BUS_CAN_SEND(3)

NAME         top

       sd_bus_can_send - Check which types can be sent over a bus object

SYNOPSIS         top

       #include <systemd/sd-bus.h>

       void sd_bus_can_send(sd_bus *bus, char type);

DESCRIPTION         top

       sd_bus_can_send is mostly used for checking if file descriptor
       passing is available on the given bus.  type can be any of the
       SD_BUS_TYPE constants.

RETURN VALUE         top

       On failure, sd_bus_can_send() returns a negative errno-style error
       code. If values of the given type can be sent over the given bus, it
       returns a positive integer. Otherwise, it returns zero.

       Returned errors may indicate the following problems:

           The bus object bus could not be resolved.

           The input parameter bus is NULL or the bus is not connected.

           The bus object bus was created in a different process.

NOTES         top

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

SEE ALSO         top

       systemd(1), sd-bus(3)

COLOPHON         top

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systemd 246                                               SD_BUS_CAN_SEND(3)

Pages that refer to this page: sd-bus(3)sd_bus_get_creds_mask(3)sd_bus_negotiate_creds(3)sd_bus_negotiate_fds(3)sd_bus_negotiate_timestamp(3)30-systemd-environment-d-generator(7)systemd.directives(7)systemd.index(7)