package/busybox/config/loginutils/Config.in

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see scripts/kbuild/config-language.txt.
   4 #
   5
   6 menu "Login/Password Management Utilities"
   7
   8 config BUSYBOX_CONFIG_FEATURE_SHADOWPASSWDS
   9         bool "Support for shadow passwords"
  10         default n
  11         help
  12           Build support for shadow password in /etc/shadow. This file is only
  13           readable by root and thus the encrypted passwords are no longer
  14           publicly readable.
  15
  16 config BUSYBOX_CONFIG_USE_BB_PWD_GRP
  17         bool "Use internal password and group functions rather than system functions"
  18         default n
  19         help
  20           If you leave this disabled, busybox will use the system's password
  21           and group functions. And if you are using the GNU C library
  22           (glibc), you will then need to install the /etc/nsswitch.conf
  23           configuration file and the required /lib/libnss_* libraries in
  24           order for the password and group functions to work. This generally
  25           makes your embedded system quite a bit larger.
  26
  27           Enabling this option will cause busybox to directly access the
  28           system's /etc/password, /etc/group files (and your system will be
  29           smaller, and I will get fewer emails asking about how glibc NSS
  30           works). When this option is enabled, you will not be able to use
  31           PAM to access remote LDAP password servers and whatnot. And if you
  32           want hostname resolution to work with glibc, you still need the
  33           /lib/libnss_* libraries.
  34
  35           If you need to use glibc's nsswitch.conf mechanism
  36           (e.g. if user/group database is NOT stored in /etc/passwd etc),
  37           you must NOT use this option.
  38
  39           If you enable this option, it will add about 1.5k.
  40
  41 config BUSYBOX_CONFIG_USE_BB_SHADOW
  42         bool "Use internal shadow password functions"
  43         default n
  44         depends on BUSYBOX_CONFIG_USE_BB_PWD_GRP && BUSYBOX_CONFIG_FEATURE_SHADOWPASSWDS
  45         help
  46           If you leave this disabled, busybox will use the system's shadow
  47           password handling functions. And if you are using the GNU C library
  48           (glibc), you will then need to install the /etc/nsswitch.conf
  49           configuration file and the required /lib/libnss_* libraries in
  50           order for the shadow password functions to work. This generally
  51           makes your embedded system quite a bit larger.
  52
  53           Enabling this option will cause busybox to directly access the
  54           system's /etc/shadow file when handling shadow passwords. This
  55           makes your system smaller (and I will get fewer emails asking about
  56           how glibc NSS works). When this option is enabled, you will not be
  57           able to use PAM to access shadow passwords from remote LDAP
  58           password servers and whatnot.
  59
  60 config BUSYBOX_CONFIG_USE_BB_CRYPT
  61         bool "Use internal DES and MD5 crypt functions"
  62         default n
  63         help
  64           Busybox has internal DES and MD5 crypt functions.
  65           They produce results which are identical to corresponding
  66           standard C library functions.
  67
  68           If you leave this disabled, busybox will use the system's
  69           crypt functions. Most C libraries use large (~70k)
  70           static buffers there, and also combine them with more general
  71           DES encryption/decryption.
  72
  73           For busybox, having large static buffers is undesirable,
  74           especially on NOMMU machines. Busybox also doesn't need
  75           DES encryption/decryption and can do with smaller code.
  76
  77           If you enable this option, it will add about 4.8k of code
  78           if you are building dynamically linked executable.
  79           In static build, it makes code _smaller_ by about 1.2k,
  80           and likely many kilobytes less of bss.
  81
  82 config BUSYBOX_CONFIG_ADDGROUP
  83         bool "addgroup"
  84         default n
  85         help
  86           Utility for creating a new group account.
  87
  88 config BUSYBOX_CONFIG_FEATURE_ADDUSER_TO_GROUP
  89         bool "Support for adding users to groups"
  90         default n
  91         depends on BUSYBOX_CONFIG_ADDGROUP
  92         help
  93           If  called  with two non-option arguments,
  94           addgroup will add an existing user to an
  95           existing group.
  96
  97 config BUSYBOX_CONFIG_DELGROUP
  98         bool "delgroup"
  99         default n
 100         help
 101           Utility for deleting a group account.
 102
 103 config BUSYBOX_CONFIG_FEATURE_DEL_USER_FROM_GROUP
 104         bool "Support for removing users from groups"
 105         default n
 106         depends on BUSYBOX_CONFIG_DELGROUP
 107         help
 108           If called with two non-option arguments, deluser
 109           or delgroup will remove an user from a specified group.
 110
 111 config BUSYBOX_CONFIG_FEATURE_CHECK_NAMES
 112         bool "Enable sanity check on user/group names in adduser and addgroup"
 113         default n
 114         depends on BUSYBOX_CONFIG_ADDUSER || BUSYBOX_CONFIG_ADDGROUP
 115         help
 116           Enable sanity check on user and group names in adduser and addgroup.
 117           To avoid problems, the user or group name should consist only of
 118           letters, digits, underscores, periods, at signs and dashes,
 119           and not start with a dash (as defined by IEEE Std 1003.1-2001).
 120           For compatibility with Samba machine accounts "$" is also supported
 121           at the end of the user or group name.
 122
 123 config BUSYBOX_CONFIG_ADDUSER
 124         bool "adduser"
 125         default n
 126         help
 127           Utility for creating a new user account.
 128
 129 config BUSYBOX_CONFIG_FEATURE_ADDUSER_LONG_OPTIONS
 130         bool "Enable long options"
 131         default n
 132         depends on BUSYBOX_CONFIG_ADDUSER && BUSYBOX_CONFIG_GETOPT_LONG
 133         help
 134           Support long options for the adduser applet.
 135
 136 config BUSYBOX_CONFIG_DELUSER
 137         bool "deluser"
 138         default n
 139         help
 140           Utility for deleting a user account.
 141
 142 config BUSYBOX_CONFIG_GETTY
 143         bool "getty"
 144         default n
 145         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 146         help
 147           getty lets you log in on a tty, it is normally invoked by init.
 148
 149 config BUSYBOX_CONFIG_FEATURE_UTMP
 150         bool "Support utmp file"
 151         depends on BUSYBOX_CONFIG_GETTY || BUSYBOX_CONFIG_LOGIN || BUSYBOX_CONFIG_SU || BUSYBOX_CONFIG_WHO
 152         default n
 153         help
 154           The file /var/run/utmp is used to track who is currently logged in.
 155
 156 config BUSYBOX_CONFIG_FEATURE_WTMP
 157         bool "Support wtmp file"
 158         depends on BUSYBOX_CONFIG_GETTY || BUSYBOX_CONFIG_LOGIN || BUSYBOX_CONFIG_SU || BUSYBOX_CONFIG_LAST
 159         default n
 160         select BUSYBOX_CONFIG_FEATURE_UTMP
 161         help
 162           The file /var/run/wtmp is used to track when user's have logged into
 163           and logged out of the system.
 164
 165 config BUSYBOX_CONFIG_LOGIN
 166         bool "login"
 167         default n
 168         select BUSYBOX_CONFIG_FEATURE_SUID
 169         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 170         help
 171           login is used when signing onto a system.
 172
 173           Note that Busybox binary must be setuid root for this applet to
 174           work properly.
 175
 176 config BUSYBOX_CONFIG_PAM
 177         bool "Support for PAM (Pluggable Authentication Modules)"
 178         default n
 179         depends on BUSYBOX_CONFIG_LOGIN
 180         help
 181           Use PAM in login(1) instead of direct access to password database.
 182
 183 config BUSYBOX_CONFIG_LOGIN_SCRIPTS
 184         bool "Support for login scripts"
 185         depends on BUSYBOX_CONFIG_LOGIN
 186         default n
 187         help
 188           Enable this if you want login to execute $LOGIN_PRE_SUID_SCRIPT
 189           just prior to switching from root to logged-in user.
 190
 191 config BUSYBOX_CONFIG_FEATURE_NOLOGIN
 192         bool "Support for /etc/nologin"
 193         default n
 194         depends on BUSYBOX_CONFIG_LOGIN
 195         help
 196           The file /etc/nologin is used by (some versions of) login(1).
 197           If it exists, non-root logins are prohibited.
 198
 199 config BUSYBOX_CONFIG_FEATURE_SECURETTY
 200         bool "Support for /etc/securetty"
 201         default n
 202         depends on BUSYBOX_CONFIG_LOGIN
 203         help
 204           The file /etc/securetty is used by (some versions of) login(1).
 205           The file contains the device names of tty lines (one per line,
 206           without leading /dev/) on which root is allowed to login.
 207
 208 config BUSYBOX_CONFIG_PASSWD
 209         bool "passwd"
 210         default y
 211         select BUSYBOX_CONFIG_FEATURE_SUID
 212         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 213         help
 214           passwd changes passwords for user and group accounts. A normal user
 215           may only change the password for his/her own account, the super user
 216           may change the password for any account. The administrator of a group
 217           may change the password for the group.
 218
 219           Note that Busybox binary must be setuid root for this applet to
 220           work properly.
 221
 222 config BUSYBOX_CONFIG_FEATURE_PASSWD_WEAK_CHECK
 223         bool "Check new passwords for weakness"
 224         default y
 225         depends on BUSYBOX_CONFIG_PASSWD
 226         help
 227           With this option passwd will refuse new passwords which are "weak".
 228
 229 config BUSYBOX_CONFIG_CRYPTPW
 230         bool "cryptpw"
 231         default n
 232         help
 233           Applet for crypting a string.
 234
 235 config BUSYBOX_CONFIG_CHPASSWD
 236         bool "chpasswd"
 237         default n
 238         help
 239           chpasswd reads a file of user name and password pairs from
 240           standard input and uses this information to update a group of
 241           existing users.
 242
 243 config BUSYBOX_CONFIG_SU
 244         bool "su"
 245         default n
 246         select BUSYBOX_CONFIG_FEATURE_SUID
 247         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 248         help
 249           su is used to become another user during a login session.
 250           Invoked without a username, su defaults to becoming the super user.
 251
 252           Note that Busybox binary must be setuid root for this applet to
 253           work properly.
 254
 255 config BUSYBOX_CONFIG_FEATURE_SU_SYSLOG
 256         bool "Enable su to write to syslog"
 257         default n
 258         depends on BUSYBOX_CONFIG_SU
 259
 260 config BUSYBOX_CONFIG_FEATURE_SU_CHECKS_SHELLS
 261         bool "Enable su to check user's shell to be listed in /etc/shells"
 262         depends on BUSYBOX_CONFIG_SU
 263         default n
 264
 265 config BUSYBOX_CONFIG_SULOGIN
 266         bool "sulogin"
 267         default n
 268         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 269         help
 270           sulogin is invoked when the system goes into single user
 271           mode (this is done through an entry in inittab).
 272
 273 config BUSYBOX_CONFIG_VLOCK
 274         bool "vlock"
 275         default n
 276         select BUSYBOX_CONFIG_FEATURE_SUID
 277         help
 278           Build the "vlock" applet which allows you to lock (virtual) terminals.
 279
 280           Note that Busybox binary must be setuid root for this applet to
 281           work properly.
 282
 283 endmenu