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    Contents of /tags/mkinitrd-6.1.5/busybox/loginutils/Config.in

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    Revision 898 - (show annotations) (download)
    Wed Aug 5 17:52:14 2009 UTC (14 years, 10 months ago) by niro
    File size: 8281 byte(s) 
    tagged 'mkinitrd-6.1.5'
    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 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 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 USE_BB_SHADOW
    42 bool "Use internal shadow password functions"
    43 default y
    44 depends on USE_BB_PWD_GRP && 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 USE_BB_CRYPT
    61 bool "Use internal DES and MD5 crypt functions"
    62 default y
    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 ADDGROUP
    83 bool "addgroup"
    84 default n
    85 help
    86 Utility for creating a new group account.
    87
    88 config FEATURE_ADDUSER_TO_GROUP
    89 bool "Support for adding users to groups"
    90 default n
    91 depends on 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 DELGROUP
    98 bool "delgroup"
    99 default n
    100 help
    101 Utility for deleting a group account.
    102
    103 config FEATURE_DEL_USER_FROM_GROUP
    104 bool "Support for removing users from groups"
    105 default n
    106 depends on 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 FEATURE_CHECK_NAMES
    112 bool "Enable sanity check on user/group names in adduser and addgroup"
    113 default n
    114 depends on ADDUSER || 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 ADDUSER
    124 bool "adduser"
    125 default n
    126 help
    127 Utility for creating a new user account.
    128
    129 config FEATURE_ADDUSER_LONG_OPTIONS
    130 bool "Enable long options"
    131 default n
    132 depends on ADDUSER && GETOPT_LONG
    133 help
    134 Support long options for the adduser applet.
    135
    136 config DELUSER
    137 bool "deluser"
    138 default n
    139 help
    140 Utility for deleting a user account.
    141
    142 config GETTY
    143 bool "getty"
    144 default n
    145 select FEATURE_SYSLOG
    146 help
    147 getty lets you log in on a tty, it is normally invoked by init.
    148
    149 config FEATURE_UTMP
    150 bool "Support utmp file"
    151 depends on GETTY || LOGIN || SU || WHO
    152 default n
    153 help
    154 The file /var/run/utmp is used to track who is currently logged in.
    155
    156 config FEATURE_WTMP
    157 bool "Support wtmp file"
    158 depends on GETTY || LOGIN || SU || LAST
    159 default n
    160 select 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 LOGIN
    166 bool "login"
    167 default n
    168 select FEATURE_SUID
    169 select 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 PAM
    177 bool "Support for PAM (Pluggable Authentication Modules)"
    178 default n
    179 depends on LOGIN
    180 help
    181 Use PAM in login(1) instead of direct access to password database.
    182
    183 config LOGIN_SCRIPTS
    184 bool "Support for login scripts"
    185 depends on 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 FEATURE_NOLOGIN
    192 bool "Support for /etc/nologin"
    193 default y
    194 depends on 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 FEATURE_SECURETTY
    200 bool "Support for /etc/securetty"
    201 default y
    202 depends on 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 PASSWD
    209 bool "passwd"
    210 default n
    211 select FEATURE_SUID
    212 select 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 FEATURE_PASSWD_WEAK_CHECK
    223 bool "Check new passwords for weakness"
    224 default y
    225 depends on PASSWD
    226 help
    227 With this option passwd will refuse new passwords which are "weak".
    228
    229 config CRYPTPW
    230 bool "cryptpw"
    231 default n
    232 help
    233 Applet for crypting a string.
    234
    235 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 SU
    244 bool "su"
    245 default n
    246 select FEATURE_SUID
    247 select 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 FEATURE_SU_SYSLOG
    256 bool "Enable su to write to syslog"
    257 default y
    258 depends on SU
    259
    260 config FEATURE_SU_CHECKS_SHELLS
    261 bool "Enable su to check user's shell to be listed in /etc/shells"
    262 depends on SU
    263 default y
    264
    265 config SULOGIN
    266 bool "sulogin"
    267 default n
    268 select 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 VLOCK
    274 bool "vlock"
    275 default n
    276 select 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