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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | HISTORY | SEE ALSO | NOTES | COLOPHON |
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SD_BUS_LIST_NAMES(3) sd_bus_list_names SD_BUS_LIST_NAMES(3)
sd_bus_list_names - Retrieve information about registered names
on a bus
#include <systemd/sd-bus.h>
int sd_bus_list_names(sd_bus *bus, char ***acquired,
char ***activatable);
sd_bus_list_names() retrieves information about the registered
names on a bus. If acquired is not NULL, this function calls
org.freedesktop.DBus.ListNames[1] to retrieve the list of
currently-owned names on the bus. If acquired is not NULL, the
function calls org.freedesktop.DBus.ListActivableNames[2] to
retrieve the list of all names on the bus that can be activated.
Note that ownership of the arrays returned by sd_bus_list_names()
in acquired and activatable is transferred to the caller and
hence, the caller is responsible for freeing these arrays and
their contents.
On success, sd_bus_list_names() returns a non-negative integer.
On failure, it returns a negative errno-style error code.
Errors
Returned errors may indicate the following problems:
-EINVAL
bus or both acquired and activatable were NULL.
-ENOPKG
The bus cannot be resolved.
-ECHILD
The bus was created in a different process, library or module
instance.
-ENOMEM
Memory allocation failed.
-ENOTCONN
The bus is not connected.
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.
sd_bus_list_names() was added in version 221.
systemd(1), sd-bus(3)
1. org.freedesktop.DBus.ListNames
https://dbus.freedesktop.org/doc/dbus-specification.html#bus-messages-list-names
2. org.freedesktop.DBus.ListActivableNames
https://dbus.freedesktop.org/doc/dbus-specification.html#bus-messages-list-activatable-names
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 2024-06-14. (At that
time, the date of the most recent commit that was found in the
repository was 2024-06-13.) 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 257~devel SD_BUS_LIST_NAMES(3)
Pages that refer to this page: sd-bus(3), systemd.directives(7), systemd.index(7)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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