Am 23.04.24 um 12:48 schrieb Stas Sergeev:
This patch-set implements the OA2_INHERIT_CRED flag for openat2() syscall. It is needed to perform an open operation with the creds that were in effect when the dir_fd was opened. This allows the process to pre-open some dirs and switch eUID (and other UIDs/GIDs) to the less-privileged user, while still retaining the possibility to open/create files within the pre-opened directory set. Changes in v2: - capture full struct cred instead of just fsuid/fsgid. Suggested by Stefan Metzmacher <metze@xxxxxxxxx> CC: Stefan Metzmacher <metze@xxxxxxxxx> CC: Eric Biederman <ebiederm@xxxxxxxxxxxx> CC: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx> CC: Andy Lutomirski <luto@xxxxxxxxxx> CC: Christian Brauner <brauner@xxxxxxxxxx> CC: Jan Kara <jack@xxxxxxx> CC: Jeff Layton <jlayton@xxxxxxxxxx> CC: Chuck Lever <chuck.lever@xxxxxxxxxx> CC: Alexander Aring <alex.aring@xxxxxxxxx> CC: linux-fsdevel@xxxxxxxxxxxxxxx CC: linux-kernel@xxxxxxxxxxxxxxx
I guess this is something that should cc linux-api@xxxxxxxxxxxxxxx ... metze
