|
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | COLOPHON |
SD_BUS_CAN_SEND(3) sd_bus_can_send SD_BUS_CAN_SEND(3)
sd_bus_can_send - Check which types can be sent over a bus object
#include <systemd/sd-bus.h>
void sd_bus_can_send(sd_bus *bus, char type);
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.
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.
Errors
Returned errors may indicate the following problems:
-ENOPKG
The bus object bus could not be resolved.
-ENOTCONN
The input parameter bus is NULL or the bus is not connected.
-ECHILD
The bus object bus was created in a different process.
These APIs are implemented as a shared library, which can be compiled
and linked to with the libsystemd pkg-config(1) file.
systemd(1), sd-bus(3)
This page is part of the systemd (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 2020-08-13. (At that
time, the date of the most recent commit that was found in the repos‐
itory was 2020-08-11.) If you discover any rendering problems in
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more up-to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not part
of the original manual page), send a mail to man-pages@man7.org
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)