From 436b2f983a3ecae1c94a16213a9dadc466e60a0c Mon Sep 17 00:00:00 2001
From: Paul Park <pjpark@mit.edu>
Date: Mon, 19 Jun 1995 17:37:55 +0000
Subject: [PATCH] Use setluid() where appropriate (e.g. OSF/1)

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@6092 dc483132-0cff-0310-8789-dd5450dbe970
---
 src/appl/bsd/ChangeLog    |  8 ++++++++
 src/appl/bsd/configure.in | 13 +++++++++++++
 src/appl/bsd/login.c      | 14 ++++++++++----
 3 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/src/appl/bsd/ChangeLog b/src/appl/bsd/ChangeLog
index fecd108fe..7aac25ac2 100644
--- a/src/appl/bsd/ChangeLog
+++ b/src/appl/bsd/ChangeLog
@@ -1,4 +1,12 @@
 
+Mon Jun 19 13:34:23 EDT 1995	Paul Park	(pjpark@mit.edu)
+	* login.c - Change setluid call to check for luid and then set it if
+		it fails, also make this logic conditional under HAVE_SETLUID.
+	* configure.in - For OSF/1 systems where libsecurity is present, set
+		HAVE_SETLUID.  We'll need to determine similar tests for other
+		extended security systems that we are to support in the future.
+
+
 Thu Jun 15 17:32:20 EDT 1995	Paul Park	(pjpark@mit.edu)
 	* Makefile.in - Change explicit library names to -l<lib> form, and
 		change target link line to use $(LD) and associated flags.
diff --git a/src/appl/bsd/configure.in b/src/appl/bsd/configure.in
index 463a4345d..28e36ec4f 100644
--- a/src/appl/bsd/configure.in
+++ b/src/appl/bsd/configure.in
@@ -12,6 +12,19 @@ AC_CHECK_LIB(odm,main,
     AC_CHECK_LIB(cfg,main, 
       LOGINLIBS="-lodm -ls -lcfg" 
       )))
+dnl
+dnl Make our operating system-specific security checks and definitions for
+dnl login.
+dnl
+case $krb5_cv_host in
+alpha-dec-osf*)
+	AC_CHECK_LIB(security,main,
+		AC_DEFINE(HAVE_SETLUID)
+		LOGINLIBS="$LOGINLIBS -lsecurity"
+	)
+	;;
+esac
+dnl
 AC_SUBST(LOGINLIBS)
 dnl
 AC_VFORK
diff --git a/src/appl/bsd/login.c b/src/appl/bsd/login.c
index ae80134e1..12fe73d70 100644
--- a/src/appl/bsd/login.c
+++ b/src/appl/bsd/login.c
@@ -818,10 +818,16 @@ bad_login:
       	    syslog(LOG_ERR, "setlogin() failure %d",errno);
 #endif
 
-#ifdef __SCO__
-	/* this is necessary when C2 mode is enabled, but not otherwise */
-	setluid((uid_t) pwd->pw_uid);
-#endif
+#ifdef	HAVE_SETLUID
+	/*
+	 * If we're on a system which keeps track of login uids, then
+	 * attempt to set the login uid, but don't get too unhappy when/if
+	 * it doesn't succeed.
+	 */
+	if ((uid_t) getluid() < (uid_t) 0) {
+	    setluid((uid_t) pwd->pw_uid);
+	}
+#endif	/* HAVE_SETLUID */
 	/* This call MUST succeed */
 #ifdef _IBMR2
 	setuidx(ID_LOGIN, pwd->pw_uid);
-- 
2.26.2