Document CONFIG_USE_BB_PWD_GRP

diff --git a/loginutils/Config.in b/loginutils/Config.in
index d24a40f0ecd7851fc2ec37398b7757d410c48485..494ddbd6b643803798064f959f2d1c058fbead10 100644 (file)
--- a/loginutils/Config.in
+++ b/loginutils/Config.in
@@ -9,7 +9,23 @@ config CONFIG_USE_BB_PWD_GRP
        bool "Use internal password and group functions rather than system functions"
        default n
        help
-         Please submit a patch to add help text for this item.
+           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.
+
 
 config CONFIG_ADDGROUP
        bool "addgroup"