readable by root and thus the encrypted passwords are no longer
publicly readable.
+config USE_BB_PWD_GRP
+ bool "Use internal password and group functions rather than system functions"
+ default n
+ 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 USE_BB_SHADOW
- bool " Use busybox shadow password functions"
+ bool "Use internal shadow password functions"
default y
depends on USE_BB_PWD_GRP && 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 USE_BB_PWD_GRP
- bool "Use internal password and group functions rather than system functions"
- default n
+ 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 USE_BB_CRYPT
+ bool "Use internal DES and MD5 crypt functions"
+ default y
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.
+ Busybox has internal DES and MD5 crypt functions.
+ They produce results which are identical to corresponding
+ standard C library functions.
- 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 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.
- If you enable this option, it will add about 1.5k to busybox.
+ 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 ADDGROUP
bool "addgroup"
default n
depends on DELGROUP
help
- If called with two non-option arguments, deluser
+ If called with two non-option arguments, deluser
or delgroup will remove an user from a specified group.
+config FEATURE_CHECK_NAMES
+ bool "Enable sanity check on user/group names in adduser and addgroup"
+ default n
+ depends on ADDUSER || 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 ADDUSER
bool "adduser"
default n
help
Utility for creating a new user account.
+config FEATURE_ADDUSER_LONG_OPTIONS
+ bool "Enable long options"
+ default n
+ depends on ADDUSER && GETOPT_LONG
+ help
+ Support long options for the adduser applet.
+
config DELUSER
bool "deluser"
default n
Note that Busybox binary must be setuid root for this applet to
work properly.
+config PAM
+ bool "Support for PAM (Pluggable Authentication Modules)"
+ default n
+ depends on LOGIN
+ help
+ Use PAM in login(1) instead of direct access to password database.
+
config LOGIN_SCRIPTS
bool "Support for login scripts"
depends on LOGIN
Enable this if you want login to execute $LOGIN_PRE_SUID_SCRIPT
just prior to switching from root to logged-in user.
+config FEATURE_NOLOGIN
+ bool "Support for /etc/nologin"
+ default y
+ depends on LOGIN
+ help
+ The file /etc/nologin is used by (some versions of) login(1).
+ If it exists, non-root logins are prohibited.
+
config FEATURE_SECURETTY
bool "Support for /etc/securetty"
default y
depends on LOGIN
help
- The file /etc/securetty is used by (some versions of) login(1).
+ 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.
help
Applet for crypting a string.
+config CHPASSWD
+ bool "chpasswd"
+ default n
+ help
+ chpasswd reads a file of user name and password pairs from
+ standard input and uses this information to update a group of
+ existing users.
+
config SU
bool "su"
default n
work properly.
endmenu
-
projects / oweals / busybox.git / blobdiff