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 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_USE_BB_CRYPT_SHA
  83         bool "Enable SHA256/512 crypt functions"
  84         default n
  85         depends on BUSYBOX_CONFIG_USE_BB_CRYPT
  86         help
  87           Enable this if you have passwords starting with "$5$" or "$6$"
  88           in your /etc/passwd or /etc/shadow files. These passwords
  89           are hashed using SHA256 and SHA512 algorithms. Support for them
  90           was added to glibc in 2008.
  91           With this option off, login will fail password check for any
  92           user which has password encrypted with these algorithms.
  93
  94 config BUSYBOX_CONFIG_ADDGROUP
  95         bool "addgroup"
  96         default n
  97         help
  98           Utility for creating a new group account.
  99
 100 config BUSYBOX_CONFIG_FEATURE_ADDGROUP_LONG_OPTIONS
 101         bool "Enable long options"
 102         default n
 103         depends on BUSYBOX_CONFIG_ADDGROUP && BUSYBOX_CONFIG_LONG_OPTS
 104         help
 105           Support long options for the addgroup applet.
 106
 107 config BUSYBOX_CONFIG_FEATURE_ADDUSER_TO_GROUP
 108         bool "Support for adding users to groups"
 109         default n
 110         depends on BUSYBOX_CONFIG_ADDGROUP
 111         help
 112           If  called  with two non-option arguments,
 113           addgroup will add an existing user to an
 114           existing group.
 115
 116 config BUSYBOX_CONFIG_DELGROUP
 117         bool "delgroup"
 118         default n
 119         help
 120           Utility for deleting a group account.
 121
 122 config BUSYBOX_CONFIG_FEATURE_DEL_USER_FROM_GROUP
 123         bool "Support for removing users from groups"
 124         default n
 125         depends on BUSYBOX_CONFIG_DELGROUP
 126         help
 127           If called with two non-option arguments, deluser
 128           or delgroup will remove an user from a specified group.
 129
 130 config BUSYBOX_CONFIG_FEATURE_CHECK_NAMES
 131         bool "Enable sanity check on user/group names in adduser and addgroup"
 132         default n
 133         depends on BUSYBOX_CONFIG_ADDUSER || BUSYBOX_CONFIG_ADDGROUP
 134         help
 135           Enable sanity check on user and group names in adduser and addgroup.
 136           To avoid problems, the user or group name should consist only of
 137           letters, digits, underscores, periods, at signs and dashes,
 138           and not start with a dash (as defined by IEEE Std 1003.1-2001).
 139           For compatibility with Samba machine accounts "$" is also supported
 140           at the end of the user or group name.
 141
 142 config BUSYBOX_CONFIG_ADDUSER
 143         bool "adduser"
 144         default n
 145         help
 146           Utility for creating a new user account.
 147
 148 config BUSYBOX_CONFIG_FEATURE_ADDUSER_LONG_OPTIONS
 149         bool "Enable long options"
 150         default n
 151         depends on BUSYBOX_CONFIG_ADDUSER && BUSYBOX_CONFIG_LONG_OPTS
 152         help
 153           Support long options for the adduser applet.
 154
 155 config BUSYBOX_CONFIG_FIRST_SYSTEM_ID
 156         int "First valid system uid or gid for adduser and addgroup"
 157         depends on BUSYBOX_CONFIG_ADDUSER || BUSYBOX_CONFIG_ADDGROUP
 158         range 0 64900
 159         default 100
 160         help
 161           First valid system uid or gid for adduser and addgroup
 162
 163 config BUSYBOX_CONFIG_LAST_SYSTEM_ID
 164         int "Last valid system uid or gid for adduser and addgroup"
 165         depends on BUSYBOX_CONFIG_ADDUSER || BUSYBOX_CONFIG_ADDGROUP
 166         range 0 64900
 167         default 999
 168         help
 169           Last valid system uid or gid for adduser and addgroup
 170
 171 config BUSYBOX_CONFIG_DELUSER
 172         bool "deluser"
 173         default n
 174         help
 175           Utility for deleting a user account.
 176
 177 config BUSYBOX_CONFIG_GETTY
 178         bool "getty"
 179         default n
 180         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 181         help
 182           getty lets you log in on a tty, it is normally invoked by init.
 183
 184 config BUSYBOX_CONFIG_LOGIN
 185         bool "login"
 186         default n
 187         select BUSYBOX_CONFIG_FEATURE_SUID
 188         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 189         help
 190           login is used when signing onto a system.
 191
 192           Note that Busybox binary must be setuid root for this applet to
 193           work properly.
 194
 195 config BUSYBOX_CONFIG_PAM
 196         bool "Support for PAM (Pluggable Authentication Modules)"
 197         default n
 198         depends on BUSYBOX_CONFIG_LOGIN
 199         help
 200           Use PAM in login(1) instead of direct access to password database.
 201
 202 config BUSYBOX_CONFIG_LOGIN_SCRIPTS
 203         bool "Support for login scripts"
 204         depends on BUSYBOX_CONFIG_LOGIN
 205         default n
 206         help
 207           Enable this if you want login to execute $LOGIN_PRE_SUID_SCRIPT
 208           just prior to switching from root to logged-in user.
 209
 210 config BUSYBOX_CONFIG_FEATURE_NOLOGIN
 211         bool "Support for /etc/nologin"
 212         default n
 213         depends on BUSYBOX_CONFIG_LOGIN
 214         help
 215           The file /etc/nologin is used by (some versions of) login(1).
 216           If it exists, non-root logins are prohibited.
 217
 218 config BUSYBOX_CONFIG_FEATURE_SECURETTY
 219         bool "Support for /etc/securetty"
 220         default n
 221         depends on BUSYBOX_CONFIG_LOGIN
 222         help
 223           The file /etc/securetty is used by (some versions of) login(1).
 224           The file contains the device names of tty lines (one per line,
 225           without leading /dev/) on which root is allowed to login.
 226
 227 config BUSYBOX_CONFIG_PASSWD
 228         bool "passwd"
 229         default y
 230         select BUSYBOX_CONFIG_FEATURE_SUID
 231         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 232         help
 233           passwd changes passwords for user and group accounts. A normal user
 234           may only change the password for his/her own account, the super user
 235           may change the password for any account. The administrator of a group
 236           may change the password for the group.
 237
 238           Note that Busybox binary must be setuid root for this applet to
 239           work properly.
 240
 241 config BUSYBOX_CONFIG_FEATURE_PASSWD_WEAK_CHECK
 242         bool "Check new passwords for weakness"
 243         default y
 244         depends on BUSYBOX_CONFIG_PASSWD
 245         help
 246           With this option passwd will refuse new passwords which are "weak".
 247
 248 config BUSYBOX_CONFIG_CRYPTPW
 249         bool "cryptpw"
 250         default n
 251         help
 252           Encrypts the given password with the crypt(3) libc function
 253           using the given salt. Debian has this utility under mkpasswd
 254           name. Busybox provides mkpasswd as an alias for cryptpw.
 255
 256 config BUSYBOX_CONFIG_CHPASSWD
 257         bool "chpasswd"
 258         default n
 259         help
 260           Reads a file of user name and password pairs from standard input
 261           and uses this information to update a group of existing users.
 262
 263 config BUSYBOX_CONFIG_SU
 264         bool "su"
 265         default n
 266         select BUSYBOX_CONFIG_FEATURE_SUID
 267         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 268         help
 269           su is used to become another user during a login session.
 270           Invoked without a username, su defaults to becoming the super user.
 271
 272           Note that Busybox binary must be setuid root for this applet to
 273           work properly.
 274
 275 config BUSYBOX_CONFIG_FEATURE_SU_SYSLOG
 276         bool "Enable su to write to syslog"
 277         default n
 278         depends on BUSYBOX_CONFIG_SU
 279
 280 config BUSYBOX_CONFIG_FEATURE_SU_CHECKS_SHELLS
 281         bool "Enable su to check user's shell to be listed in /etc/shells"
 282         depends on BUSYBOX_CONFIG_SU
 283         default n
 284
 285 config BUSYBOX_CONFIG_SULOGIN
 286         bool "sulogin"
 287         default n
 288         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 289         help
 290           sulogin is invoked when the system goes into single user
 291           mode (this is done through an entry in inittab).
 292
 293 config BUSYBOX_CONFIG_VLOCK
 294         bool "vlock"
 295         default n
 296         select BUSYBOX_CONFIG_FEATURE_SUID
 297         help
 298           Build the "vlock" applet which allows you to lock (virtual) terminals.
 299
 300           Note that Busybox binary must be setuid root for this applet to
 301           work properly.
 302
 303 endmenu