1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
|
# 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_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_FEATURE_SHADOWPASSWDS
bool "Support for 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_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
help
Support long options for the adduser applet.
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_FIRST_SYSTEM_ID
int "First valid system uid or gid for adduser and addgroup"
depends on BUSYBOX_CONFIG_ADDUSER || BUSYBOX_CONFIG_ADDGROUP
range 0 64900
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 0 64900
default BUSYBOX_DEFAULT_LAST_SYSTEM_ID
help
Last valid system uid or gid for adduser and addgroup
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
help
Support long options for the addgroup applet.
config BUSYBOX_CONFIG_FEATURE_ADDUSER_TO_GROUP
bool "Support for 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_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 for 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 >/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_PAM
bool "Support for PAM (Pluggable Authentication Modules)"
default BUSYBOX_DEFAULT_PAM
depends on BUSYBOX_CONFIG_LOGIN
help
Use PAM in login(1) instead of direct access to password database.
config BUSYBOX_CONFIG_LOGIN_SCRIPTS
bool "Support for 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 for /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 for /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_CRYPTPW
bool "cryptpw"
default BUSYBOX_DEFAULT_CRYPTPW
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_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 password encryption method (passwd -a, cryptpw -m parameter)"
default BUSYBOX_DEFAULT_FEATURE_DEFAULT_PASSWD_ALGO
depends on BUSYBOX_CONFIG_PASSWD || BUSYBOX_CONFIG_CRYPTPW
help
Possible choices are "d[es]", "m[d5]", "s[ha256]" or "sha512".
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 "Enable su to write to syslog"
default BUSYBOX_DEFAULT_FEATURE_SU_SYSLOG
depends on BUSYBOX_CONFIG_SU
config BUSYBOX_CONFIG_FEATURE_SU_CHECKS_SHELLS
bool "Enable su to check user's shell to be listed in /etc/shells"
depends on BUSYBOX_CONFIG_SU
default BUSYBOX_DEFAULT_FEATURE_SU_CHECKS_SHELLS
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
|
