# DO NOT EDIT. This file is generated from Config.src # # For a description of the syntax of this configuration file, # see scripts/kbuild/config-language.txt. # menu "Login/Password Management Utilities" config BUSYBOX_CONFIG_FEATURE_SHADOWPASSWDS bool "Support shadow passwords" default BUSYBOX_DEFAULT_FEATURE_SHADOWPASSWDS 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 BUSYBOX_CONFIG_USE_BB_PWD_GRP bool "Use internal password and group functions rather than system functions" default BUSYBOX_DEFAULT_USE_BB_PWD_GRP 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 need to use glibc's nsswitch.conf mechanism (e.g. if user/group database is NOT stored in /etc/passwd etc), you must NOT use this option. If you enable this option, it will add about 1.5k. config BUSYBOX_CONFIG_USE_BB_SHADOW bool "Use internal shadow password functions" default BUSYBOX_DEFAULT_USE_BB_SHADOW depends on BUSYBOX_CONFIG_USE_BB_PWD_GRP && BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_USE_BB_CRYPT bool "Use internal crypt functions" default BUSYBOX_DEFAULT_USE_BB_CRYPT help Busybox has internal DES and MD5 crypt functions. They produce results which are identical to corresponding standard C library functions. If you leave this disabled, busybox will use the system's crypt functions. Most C libraries use large (~70k) static buffers there, and also combine them with more general DES encryption/decryption. For busybox, having large static buffers is undesirable, especially on NOMMU machines. Busybox also doesn't need DES encryption/decryption and can do with smaller code. If you enable this option, it will add about 4.8k of code if you are building dynamically linked executable. In static build, it makes code _smaller_ by about 1.2k, and likely many kilobytes less of bss. config BUSYBOX_CONFIG_USE_BB_CRYPT_SHA bool "Enable SHA256/512 crypt functions" default BUSYBOX_DEFAULT_USE_BB_CRYPT_SHA depends on BUSYBOX_CONFIG_USE_BB_CRYPT help Enable this if you have passwords starting with "$5$" or "$6$" in your /etc/passwd or /etc/shadow files. These passwords are hashed using SHA256 and SHA512 algorithms. Support for them was added to glibc in 2008. With this option off, login will fail password check for any user which has password encrypted with these algorithms. config BUSYBOX_CONFIG_ADD_SHELL bool "add-shell" default BUSYBOX_DEFAULT_ADD_SHELL if BUSYBOX_CONFIG_DESKTOP help Add shells to /etc/shells. config BUSYBOX_CONFIG_REMOVE_SHELL bool "remove-shell" default BUSYBOX_DEFAULT_REMOVE_SHELL if BUSYBOX_CONFIG_DESKTOP help Remove shells from /etc/shells. config BUSYBOX_CONFIG_ADDGROUP bool "addgroup" default BUSYBOX_DEFAULT_ADDGROUP help Utility for creating a new group account. config BUSYBOX_CONFIG_FEATURE_ADDGROUP_LONG_OPTIONS bool "Enable long options" default BUSYBOX_DEFAULT_FEATURE_ADDGROUP_LONG_OPTIONS depends on BUSYBOX_CONFIG_ADDGROUP && BUSYBOX_CONFIG_LONG_OPTS config BUSYBOX_CONFIG_FEATURE_ADDUSER_TO_GROUP bool "Support adding users to groups" default BUSYBOX_DEFAULT_FEATURE_ADDUSER_TO_GROUP depends on BUSYBOX_CONFIG_ADDGROUP help If called with two non-option arguments, addgroup will add an existing user to an existing group. config BUSYBOX_CONFIG_ADDUSER bool "adduser" default BUSYBOX_DEFAULT_ADDUSER help Utility for creating a new user account. config BUSYBOX_CONFIG_FEATURE_ADDUSER_LONG_OPTIONS bool "Enable long options" default BUSYBOX_DEFAULT_FEATURE_ADDUSER_LONG_OPTIONS depends on BUSYBOX_CONFIG_ADDUSER && BUSYBOX_CONFIG_LONG_OPTS config BUSYBOX_CONFIG_FEATURE_CHECK_NAMES bool "Enable sanity check on user/group names in adduser and addgroup" default BUSYBOX_DEFAULT_FEATURE_CHECK_NAMES depends on BUSYBOX_CONFIG_ADDUSER || BUSYBOX_CONFIG_ADDGROUP help Enable sanity check on user and group names in adduser and addgroup. To avoid problems, the user or group name should consist only of letters, digits, underscores, periods, at signs and dashes, and not start with a dash (as defined by IEEE Std 1003.1-2001). For compatibility with Samba machine accounts "$" is also supported at the end of the user or group name. config BUSYBOX_CONFIG_LAST_ID int "Last valid uid or gid for adduser and addgroup" depends on BUSYBOX_CONFIG_ADDUSER || BUSYBOX_CONFIG_ADDGROUP default BUSYBOX_DEFAULT_LAST_ID help Last valid uid or gid for adduser and addgroup config BUSYBOX_CONFIG_FIRST_SYSTEM_ID int "First valid system uid or gid for adduser and addgroup" depends on BUSYBOX_CONFIG_ADDUSER || BUSYBOX_CONFIG_ADDGROUP range 0 BUSYBOX_CONFIG_LAST_ID default BUSYBOX_DEFAULT_FIRST_SYSTEM_ID help First valid system uid or gid for adduser and addgroup config BUSYBOX_CONFIG_LAST_SYSTEM_ID int "Last valid system uid or gid for adduser and addgroup" depends on BUSYBOX_CONFIG_ADDUSER || BUSYBOX_CONFIG_ADDGROUP range BUSYBOX_CONFIG_FIRST_SYSTEM_ID BUSYBOX_CONFIG_LAST_ID default BUSYBOX_DEFAULT_LAST_SYSTEM_ID help Last valid system uid or gid for adduser and addgroup config BUSYBOX_CONFIG_CHPASSWD bool "chpasswd" default BUSYBOX_DEFAULT_CHPASSWD help Reads a file of user name and password pairs from standard input and uses this information to update a group of existing users. config BUSYBOX_CONFIG_FEATURE_DEFAULT_PASSWD_ALGO string "Default encryption method (passwd -a, cryptpw -m, chpasswd -c ALG)" default BUSYBOX_DEFAULT_FEATURE_DEFAULT_PASSWD_ALGO depends on BUSYBOX_CONFIG_PASSWD || BUSYBOX_CONFIG_CRYPTPW || BUSYBOX_CONFIG_CHPASSWD help Possible choices are "d[es]", "m[d5]", "s[ha256]" or "sha512". config BUSYBOX_CONFIG_CRYPTPW bool "cryptpw" default BUSYBOX_DEFAULT_CRYPTPW help Encrypts the given password with the crypt(3) libc function using the given salt. config BUSYBOX_CONFIG_MKPASSWD bool "mkpasswd" default BUSYBOX_DEFAULT_MKPASSWD help Encrypts the given password with the crypt(3) libc function using the given salt. Debian has this utility under mkpasswd name. Busybox provides mkpasswd as an alias for cryptpw. config BUSYBOX_CONFIG_DELUSER bool "deluser" default BUSYBOX_DEFAULT_DELUSER help Utility for deleting a user account. config BUSYBOX_CONFIG_DELGROUP bool "delgroup" default BUSYBOX_DEFAULT_DELGROUP help Utility for deleting a group account. config BUSYBOX_CONFIG_FEATURE_DEL_USER_FROM_GROUP bool "Support removing users from groups" default BUSYBOX_DEFAULT_FEATURE_DEL_USER_FROM_GROUP depends on BUSYBOX_CONFIG_DELGROUP help If called with two non-option arguments, deluser or delgroup will remove an user from a specified group. config BUSYBOX_CONFIG_GETTY bool "getty" default BUSYBOX_DEFAULT_GETTY select BUSYBOX_CONFIG_FEATURE_SYSLOG help getty lets you log in on a tty. It is normally invoked by init. Note that you can save a few bytes by disabling it and using login applet directly. If you need to reset tty attributes before calling login, this script approximates getty: exec /dev/$1 2>&1 || exit 1 reset stty sane; stty ispeed 38400; stty ospeed 38400 printf "%s login: " "`hostname`" read -r login exec /bin/login "$login" config BUSYBOX_CONFIG_LOGIN bool "login" default BUSYBOX_DEFAULT_LOGIN select BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_LOGIN_SESSION_AS_CHILD bool "Run logged in session in a child process" default BUSYBOX_DEFAULT_LOGIN_SESSION_AS_CHILD if BUSYBOX_CONFIG_PAM depends on BUSYBOX_CONFIG_LOGIN help Run the logged in session in a child process. This allows login to clean up things such as utmp entries or PAM sessions when the login session is complete. If you use PAM, you almost always would want this to be set to Y, else PAM session will not be cleaned up. config BUSYBOX_CONFIG_LOGIN_SCRIPTS bool "Support login scripts" depends on BUSYBOX_CONFIG_LOGIN default BUSYBOX_DEFAULT_LOGIN_SCRIPTS help Enable this if you want login to execute $LOGIN_PRE_SUID_SCRIPT just prior to switching from root to logged-in user. config BUSYBOX_CONFIG_FEATURE_NOLOGIN bool "Support /etc/nologin" default BUSYBOX_DEFAULT_FEATURE_NOLOGIN depends on BUSYBOX_CONFIG_LOGIN help The file /etc/nologin is used by (some versions of) login(1). If it exists, non-root logins are prohibited. config BUSYBOX_CONFIG_FEATURE_SECURETTY bool "Support /etc/securetty" default BUSYBOX_DEFAULT_FEATURE_SECURETTY depends on BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_PASSWD bool "passwd" default BUSYBOX_DEFAULT_PASSWD select BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_FEATURE_PASSWD_WEAK_CHECK bool "Check new passwords for weakness" default BUSYBOX_DEFAULT_FEATURE_PASSWD_WEAK_CHECK depends on BUSYBOX_CONFIG_PASSWD help With this option passwd will refuse new passwords which are "weak". config BUSYBOX_CONFIG_SU bool "su" default BUSYBOX_DEFAULT_SU select BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_FEATURE_SU_SYSLOG bool "Log to syslog all attempts to use su" default BUSYBOX_DEFAULT_FEATURE_SU_SYSLOG depends on BUSYBOX_CONFIG_SU config BUSYBOX_CONFIG_FEATURE_SU_CHECKS_SHELLS bool "If user's shell is not in /etc/shells, disallow -s PROG" default BUSYBOX_DEFAULT_FEATURE_SU_CHECKS_SHELLS depends on BUSYBOX_CONFIG_SU config BUSYBOX_CONFIG_FEATURE_SU_BLANK_PW_NEEDS_SECURE_TTY bool "Allow blank passwords only on TTYs in /etc/securetty" default BUSYBOX_DEFAULT_FEATURE_SU_BLANK_PW_NEEDS_SECURE_TTY depends on BUSYBOX_CONFIG_SU config BUSYBOX_CONFIG_SULOGIN bool "sulogin" default BUSYBOX_DEFAULT_SULOGIN select BUSYBOX_CONFIG_FEATURE_SYSLOG help sulogin is invoked when the system goes into single user mode (this is done through an entry in inittab). config BUSYBOX_CONFIG_VLOCK bool "vlock" default BUSYBOX_DEFAULT_VLOCK 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