cbd2472b7c
Using hard-coded access vector ids is deprecated and can lead to issues with custom SELinux policies. Switch to `selinux_check_access()`. Also use the libselinux log callback and log if available to audit. This makes it easier for users to catch SELinux denials. Drop legacy shortcut logic for passwd, which avoided a SELinux check if uid 0 changes a password of a user which username equals the current SELinux user identifier. Nowadays usernames rarely match SELinux user identifiers and the benefit of skipping a SELinux check is negligible. Signed-off-by: Christian Göttsche <cgzones@googlemail.com>