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-rw-r--r--loginutils/Config.in89
1 files changed, 55 insertions, 34 deletions
diff --git a/loginutils/Config.in b/loginutils/Config.in
index c57d997..e39fb6f 100644
--- a/loginutils/Config.in
+++ b/loginutils/Config.in
@@ -13,45 +13,67 @@ config FEATURE_SHADOWPASSWDS
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 to busybox.
+
config USE_BB_SHADOW
bool "Use busybox 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 rather than system 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.
-
- 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 enable this option, it will add about 1.5k to busybox.
+ If you leave this disabled, busybox will use the system's password
+ and group functions. Most C libraries use large (~70k)
+ static buffers in these functions, and also combine them
+ with more general DES encryption/decryption routines.
+ For busybox, having large static buffers is undesirable,
+ especially so on NOMMU machines.
+
+ These functions produce results which are identical
+ to corresponding C library functions.
+
+ If you enable this option, it will add about 4.8k to busybox
+ if you are building dynamically linked executable.
+ In static build, it makes executable _smaller_ by about 1.2k.
config ADDGROUP
bool "addgroup"
@@ -255,4 +277,3 @@ config VLOCK
work properly.
endmenu
-