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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | HISTORY | SEE ALSO | COLOPHON |
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SD_BUS_GET_NAME_CREDS(3) sd_bus_get_name_creds SD_BUS_GET_NAME_CREDS(3)
sd_bus_get_name_creds, sd_bus_get_owner_creds - Query bus client
credentials
#include <systemd/sd-bus.h>
int sd_bus_get_name_creds(sd_bus *bus, const char *name,
uint64_t mask, sd_bus_creds **creds);
int sd_bus_get_owner_creds(sd_bus *bus, uint64_t mask,
sd_bus_creds **creds);
sd_bus_get_name_creds() queries the credentials of the bus client
identified by name. The mask parameter is a combo of
SD_BUS_CREDS_* flags that indicate which credential info the
caller is interested in. See sd_bus_creds_new_from_pid(3) for a
list of possible flags. On success, creds contains a new
sd_bus_creds instance with the requested information. Ownership of
this instance belongs to the caller and it should be freed once no
longer needed by calling sd_bus_creds_unref(3).
sd_bus_get_owner_creds() queries the credentials of the creator of
the given bus. The mask and creds parameters behave the same as in
sd_bus_get_name_creds().
On success, these functions return a non-negative integer. On
failure, they return a negative errno-style error code.
Errors
Returned errors may indicate the following problems:
-EINVAL
An argument is invalid.
-ENOPKG
The bus cannot be resolved.
-EPERM
The bus has already been started.
-ECHILD
The bus was created in a different process, library or module
instance.
-ENOMEM
Memory allocation failed.
Functions described here are available as a shared library, which
can be compiled against and linked to with the
libsystemd pkg-config(1) file.
All functions listed here are thread-agnostic and only a single
thread may operate on a given object at any given time. Different
threads may access the same object at different times. Multiple
independent objects may be used from different threads in
parallel.
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_get_name_creds() and sd_bus_get_owner_creds() were added in
version 221.
systemd(1), sd-bus(3), sd_bus_creds_unref(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 2026-08-04. (At that
time, the date of the most recent commit that was found in the
repository was 2026-08-03.) 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 262~devel SD_BUS_GET_NAME_CREDS(3)
Pages that refer to this page: sd-bus(3), sd_bus_creds_get_pid(3), sd_bus_creds_new_from_pid(3), sd_bus_query_sender_creds(3), systemd.directives(7), systemd.index(7)
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HTML rendering created 2026-09-09 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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