sd_bus_get_name_creds, sd_bus_get_owner_creds - Query bus client credentials
int sd_bus_get_name_creds(sd_bus *bus,
const char *name,
int sd_bus_get_owner_creds(sd_bus *bus,
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.
Returned errors may indicate the following problems:
An argument is invalid.
The bus cannot be resolved.
The bus has already been started.
The bus was created in a different process.
Memory allocation failed.
These APIs are implemented as a shared library, which can be compiled and linked
to with the libsystemd pkg-config(1) file.