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_FEATURE_UTMP
 185         bool "Support utmp file"
 186         depends on BUSYBOX_CONFIG_GETTY || BUSYBOX_CONFIG_LOGIN || BUSYBOX_CONFIG_SU || BUSYBOX_CONFIG_WHO
 187         default n
 188         help
 189           The file /var/run/utmp is used to track who is currently logged in.
 190
 191 config BUSYBOX_CONFIG_FEATURE_WTMP
 192         bool "Support wtmp file"
 193         depends on BUSYBOX_CONFIG_GETTY || BUSYBOX_CONFIG_LOGIN || BUSYBOX_CONFIG_SU || BUSYBOX_CONFIG_LAST
 194         default n
 195         select BUSYBOX_CONFIG_FEATURE_UTMP
 196         help
 197           The file /var/run/wtmp is used to track when user's have logged into
 198           and logged out of the system.
 199
 200 config BUSYBOX_CONFIG_LOGIN
 201         bool "login"
 202         default n
 203         select BUSYBOX_CONFIG_FEATURE_SUID
 204         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 205         help
 206           login is used when signing onto a system.
 207
 208           Note that Busybox binary must be setuid root for this applet to
 209           work properly.
 210
 211 config BUSYBOX_CONFIG_PAM
 212         bool "Support for PAM (Pluggable Authentication Modules)"
 213         default n
 214         depends on BUSYBOX_CONFIG_LOGIN
 215         help
 216           Use PAM in login(1) instead of direct access to password database.
 217
 218 config BUSYBOX_CONFIG_LOGIN_SCRIPTS
 219         bool "Support for login scripts"
 220         depends on BUSYBOX_CONFIG_LOGIN
 221         default n
 222         help
 223           Enable this if you want login to execute $LOGIN_PRE_SUID_SCRIPT
 224           just prior to switching from root to logged-in user.
 225
 226 config BUSYBOX_CONFIG_FEATURE_NOLOGIN
 227         bool "Support for /etc/nologin"
 228         default n
 229         depends on BUSYBOX_CONFIG_LOGIN
 230         help
 231           The file /etc/nologin is used by (some versions of) login(1).
 232           If it exists, non-root logins are prohibited.
 233
 234 config BUSYBOX_CONFIG_FEATURE_SECURETTY
 235         bool "Support for /etc/securetty"
 236         default n
 237         depends on BUSYBOX_CONFIG_LOGIN
 238         help
 239           The file /etc/securetty is used by (some versions of) login(1).
 240           The file contains the device names of tty lines (one per line,
 241           without leading /dev/) on which root is allowed to login.
 242
 243 config BUSYBOX_CONFIG_PASSWD
 244         bool "passwd"
 245         default y
 246         select BUSYBOX_CONFIG_FEATURE_SUID
 247         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 248         help
 249           passwd changes passwords for user and group accounts. A normal user
 250           may only change the password for his/her own account, the super user
 251           may change the password for any account. The administrator of a group
 252           may change the password for the group.
 253
 254           Note that Busybox binary must be setuid root for this applet to
 255           work properly.
 256
 257 config BUSYBOX_CONFIG_FEATURE_PASSWD_WEAK_CHECK
 258         bool "Check new passwords for weakness"
 259         default y
 260         depends on BUSYBOX_CONFIG_PASSWD
 261         help
 262           With this option passwd will refuse new passwords which are "weak".
 263
 264 config BUSYBOX_CONFIG_CRYPTPW
 265         bool "cryptpw"
 266         default n
 267         help
 268           Encrypts the given password with the crypt(3) libc function
 269           using the given salt. Debian has this utility under mkpasswd
 270           name. Busybox provides mkpasswd as an alias for cryptpw.
 271
 272 config BUSYBOX_CONFIG_CHPASSWD
 273         bool "chpasswd"
 274         default n
 275         help
 276           Reads a file of user name and password pairs from standard input
 277           and uses this information to update a group of existing users.
 278
 279 config BUSYBOX_CONFIG_SU
 280         bool "su"
 281         default n
 282         select BUSYBOX_CONFIG_FEATURE_SUID
 283         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 284         help
 285           su is used to become another user during a login session.
 286           Invoked without a username, su defaults to becoming the super user.
 287
 288           Note that Busybox binary must be setuid root for this applet to
 289           work properly.
 290
 291 config BUSYBOX_CONFIG_FEATURE_SU_SYSLOG
 292         bool "Enable su to write to syslog"
 293         default n
 294         depends on BUSYBOX_CONFIG_SU
 295
 296 config BUSYBOX_CONFIG_FEATURE_SU_CHECKS_SHELLS
 297         bool "Enable su to check user's shell to be listed in /etc/shells"
 298         depends on BUSYBOX_CONFIG_SU
 299         default n
 300
 301 config BUSYBOX_CONFIG_SULOGIN
 302         bool "sulogin"
 303         default n
 304         select BUSYBOX_CONFIG_FEATURE_SYSLOG
 305         help
 306           sulogin is invoked when the system goes into single user
 307           mode (this is done through an entry in inittab).
 308
 309 config BUSYBOX_CONFIG_VLOCK
 310         bool "vlock"
 311         default n
 312         select BUSYBOX_CONFIG_FEATURE_SUID
 313         help
 314           Build the "vlock" applet which allows you to lock (virtual) terminals.
 315
 316           Note that Busybox binary must be setuid root for this applet to
 317           work properly.
 318
 319 endmenu