login: apply PAM environment

login should apply the PAM environment modified by plugins
such as pam_env.  Other 'login's do a similar thing.

I tested this by setting some env variables with pam_env which were
correctly applied.

Signed-off-by: Ian Wienand <ianw@vmware.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/loginutils/login.c b/loginutils/login.c
index 9a624df9a..c285b45a1 100644
--- a/loginutils/login.c
+++ b/loginutils/login.c
@@ -217,6 +217,7 @@ int login_main(int argc UNUSED_PARAM, char **argv)
         const char *failed_msg;
         struct passwd pwdstruct;
         char pwdbuf[256];
+        char **pamenv;
 #endif
 
         username[0] = '\0';
@@ -400,6 +401,16 @@ int login_main(int argc UNUSED_PARAM, char **argv)
                         (!(opt & LOGIN_OPT_p) * SETUP_ENV_CLEARENV) + SETUP_ENV_CHANGEENV,
                         pw);
 
+#if ENABLE_PAM
+        /* Modules such as pam_env will setup the PAM environment,
+         * which should be copied into the new environment. */
+        pamenv = pam_getenvlist(pamh);
+        if (pamenv) while (*pamenv) {
+                putenv(*pamenv);
+                pamenv++;
+        }
+#endif
+
         motd();
 
         if (pw->pw_uid == 0)