# # For a description of the syntax of this configuration file, # see scripts/kbuild/config-language.txt. # menu "Login/Password Management Utilities" config FEATURE_SHADOWPASSWDS bool "Support for shadow passwords" default n help Build support for shadow password in /etc/shadow. This file is only readable by root and thus the encrypted passwords are no longer publicly readable. config USE_BB_SHADOW bool " Use busybox shadow password functions" default y depends on USE_BB_PWD_GRP && FEATURE_SHADOWPASSWDS help If you leave this disabled, busybox will use the system's shadow password handling functions. And if you are using the GNU C library (glibc), you will then need to install the /etc/nsswitch.conf configuration file and the required /lib/libnss_* libraries in order for the shadow password functions to work. This generally makes your embedded system quite a bit larger. Enabling this option will cause busybox to directly access the system's /etc/shadow file when handling shadow passwords. This makes your system smaller and I will get fewer emails asking about how glibc NSS works). When this option is enabled, you will not be able to use PAM to access shadow passwords from remote LDAP password servers and whatnot. config USE_BB_PWD_GRP bool "Use internal password and group functions rather than system functions" default n help If you leave this disabled, busybox will use the system's password and group functions. And if you are using the GNU C library (glibc), you will then need to install the /etc/nsswitch.conf configuration file and the required /lib/libnss_* libraries in order for the password and group functions to work. This generally makes your embedded system quite a bit larger. Enabling this option will cause busybox to directly access the system's /etc/password, /etc/group files (and your system will be smaller, and I will get fewer emails asking about how glibc NSS works). When this option is enabled, you will not be able to use PAM to access remote LDAP password servers and whatnot. And if you want hostname resolution to work with glibc, you still need the /lib/libnss_* libraries. If you enable this option, it will add about 1.5k to busybox. config ADDGROUP bool "addgroup" default n help Utility for creating a new group account. config FEATURE_ADDUSER_TO_GROUP bool "Support for adding users to groups" default n depends on ADDGROUP help If called with two non-option arguments, addgroup will add an existing user to an existing group. config DELGROUP bool "delgroup" default n help Utility for deleting a group account. config FEATURE_DEL_USER_FROM_GROUP bool "Support for removing users from groups." default n depends on DELGROUP help If called with two non-option arguments, deluser or delgroup will remove an user from a specified group. config ADDUSER bool "adduser" default n help Utility for creating a new user account. config DELUSER bool "deluser" default n help Utility for deleting a user account. config GETTY bool "getty" default n select FEATURE_SYSLOG help getty lets you log in on a tty, it is normally invoked by init. config FEATURE_UTMP bool "Support utmp file" depends on GETTY || LOGIN || SU || WHO default n help The file /var/run/utmp is used to track who is currently logged in. config FEATURE_WTMP bool "Support wtmp file" depends on GETTY || LOGIN || SU || LAST default n select FEATURE_UTMP help The file /var/run/wtmp is used to track when user's have logged into and logged out of the system. config LOGIN bool "login" default n select FEATURE_SUID select FEATURE_SYSLOG help login is used when signing onto a system. Note that Busybox binary must be setuid root for this applet to work properly. config PAM bool "Support for PAM (Pluggable Authentication Modules)" default n depends on LOGIN help Use PAM in login(1) instead of direct access to password database. config LOGIN_SCRIPTS bool "Support for login scripts" depends on LOGIN default n help Enable this if you want login to execute $LOGIN_PRE_SUID_SCRIPT just prior to switching from root to logged-in user. config FEATURE_NOLOGIN bool "Support for /etc/nologin" default y depends on LOGIN help The file /etc/nologin is used by (some versions of) login(1). If it exists, non-root logins are prohibited. config FEATURE_SECURETTY bool "Support for /etc/securetty" default y depends on LOGIN help The file /etc/securetty is used by (some versions of) login(1). The file contains the device names of tty lines (one per line, without leading /dev/) on which root is allowed to login. config PASSWD bool "passwd" default n select FEATURE_SUID select FEATURE_SYSLOG help passwd changes passwords for user and group accounts. A normal user may only change the password for his/her own account, the super user may change the password for any account. The administrator of a group may change the password for the group. Note that Busybox binary must be setuid root for this applet to work properly. config FEATURE_PASSWD_WEAK_CHECK bool "Check new passwords for weakness" default y depends on PASSWD help With this option passwd will refuse new passwords which are "weak". config CRYPTPW bool "cryptpw" default n help Applet for crypting a string. config CHPASSWD bool "chpasswd" default n help chpasswd reads a file of user name and password pairs from standard input and uses this information to update a group of existing users. config SU bool "su" default n select FEATURE_SUID select FEATURE_SYSLOG help su is used to become another user during a login session. Invoked without a username, su defaults to becoming the super user. Note that Busybox binary must be setuid root for this applet to work properly. config FEATURE_SU_SYSLOG bool "Enable su to write to syslog" default y depends on SU config FEATURE_SU_CHECKS_SHELLS bool "Enable su to check user's shell to be listed in /etc/shells" depends on SU default y config SULOGIN bool "sulogin" default n select FEATURE_SYSLOG help sulogin is invoked when the system goes into single user mode (this is done through an entry in inittab). config VLOCK bool "vlock" default n select FEATURE_SUID help Build the "vlock" applet which allows you to lock (virtual) terminals. Note that Busybox binary must be setuid root for this applet to work properly. endmenu