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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | COLOPHON |
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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 2021-04-01. (At that
time, the date of the most recent commit that was found in the
repository was 2021-04-01.) 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 is not part of the original manual page), send a mail to
man-pages@man7.org
systemd 248 SD_BUS_CAN_SEND(3)
Pages that refer to this page: sd-bus(3), sd_bus_negotiate_fds(3), systemd.directives(7), systemd.index(7)
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