NAME

       sd_bus_get_name_creds, sd_bus_get_owner_creds - Query bus client credentials

SYNOPSIS

       #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);

DESCRIPTION

       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().

RETURN VALUE

       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.

NOTES

       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.

HISTORY

       sd_bus_get_name_creds() and sd_bus_get_owner_creds() were added in version 221.

SEE ALSO

       systemd(1), sd-bus(3), sd_bus_creds_unref(3)