Linux-PAM release 1.4.0 * Multiple minor bug fixes and documentation improvements * Fixed grammar of messages printed via pam_prompt * Added support for a vendor directory and libeconf * configure: Added --enable-Werror option to enable -Werror build * configure: Allowed disabling documentation through --disable-doc * pam_get_authtok_verify: Avoid duplicate password verification * pam_cracklib: Fixed parsing of options without arguments * pam_env: Changed the default to not read the user .pam_environment file * pam_exec: Require a user name to be specified before the command is executed * pam_faillock: New module for locking after multiple auth failures * pam_group, pam_time: Fixed logical error with multiple ! operators * pam_keyinit: In pam_sm_setcred do the same as in pam_sm_open_session * pam_lastlog: Do not log info about failed login if the session was opened with PAM_SILENT flag * pam_lastlog: Limit lastlog file use by LASTLOG_UID_MAX option in login.defs * pam_lastlog: With 'unlimited' option prevent SIGXFSZ due to reduced 'fsize' limit * pam_mkhomedir: Fixed return value when the user is unknown * pam_motd: Export MOTD_SHOWN=pam after showing MOTD * pam_motd: Support multiple motd paths specified, with filename overrides * pam_namespace: Added a systemd service, which creates the namespaced instance parent directories during boot * pam_namespace: Support for noexec, nosuid and nodev flags for tmpfs mounts * pam_selinux: Check unknown object classes or permissions in current policy * pam_selinux: Fall back to log to syslog if audit logging fails * pam_setquota: New module to set or modify disk quotas on session start * pam_shells: Recognize /bin/sh as the default shell * pam_succeed_if: Fixed potential override of the default prompt * pam_succeed_if: Support lists in group membership checks * pam_time: Added conffile= option to specify an alternative configuration file * pam_tty_audit: If kernel audit is disabled return PAM_IGNORE * pam_umask: Added new 'nousergroups' module argument and allowed specifying the default for usergroups at build-time * pam_unix: Added 'nullresetok' option to allow resetting blank passwords * pam_unix: Report unusable hashes found by checksalt to syslog * pam_unix: Return PAM_AUTHINFO_UNAVAIL when shadow entry is unavailable * pam_unix: Support for (gost-)yescrypt hashing methods * pam_unix: Use bcrypt b-variant when it bcrypt is chosen * pam_usertype: New module to tell if uid is in login.defs ranges * Fixed and documented possible values returned by pam_get_user() * Added new API call pam_start_confdir() for special applications that cannot use the system-default PAM configuration paths and need to explicitly specify another path * Deprecated pam_cracklib: this module is no longer built by default and will be removed in the next release, use pam_passwdqc (from passwdqc project) or pam_pwquality (from libpwquality project) instead * Deprecated pam_tally and pam_tally2: these modules are no longer built by default and will be removed in the next release, use pam_faillock instead