agent: Sanitize permissions of the private key directory.
* agent/gpg-agent.c (create_private_keys_directory): Set permissions. * common/sysutils.c (modestr_to_mode): New function. (gnupg_mkdir): Use new function. (gnupg_chmod): New function. * common/sysutils.h (gnupg_chmod): New prototype. * tests/migrations/from-classic.test: Test migration with existing directory.
- GnuPG-bug-id: T2312
- Signed-off-by: Justus Winter <justus@g10code.com>