Hi

PAM from RH7 and rawhide does not know about RLIMIT_LOCKS, however it uses
RLIM_NLIMITS which includes the count for RLIMIT_LOCKS. Thus when PAM sets
the default lock values RLIMIT_LOCKS.{SOFT,HARD} will be set to zero. Then
if one tries to logon to a kernel-2.4 based system and grab a file lock it
will fail as the limit is zero ... happens when trying to use sendmail for
instance.

Patch attached.

Jes

--- pam-0.72/modules/pam_limits/pam_limits.c-old	Wed Nov  8 16:57:14 2000
+++ pam-0.72/modules/pam_limits/pam_limits.c	Wed Nov  8 16:59:27 2000
@@ -272,11 +272,17 @@
     retval |= getrlimit(RLIMIT_AS,      &limits[RLIMIT_AS].limit);
     limits[RLIMIT_AS].src_soft = LIMITS_DEF_NONE;
     limits[RLIMIT_AS].src_hard = LIMITS_DEF_NONE;
+
+#ifdef RLIMIT_LOCKS
+    retval |= getrlimit(RLIMIT_LOCKS,   &limits[RLIMIT_LOCKS].limit);
+    limits[RLIMIT_LOCKS].src_soft = LIMITS_DEF_NONE;
+    limits[RLIMIT_LOCKS].src_hard = LIMITS_DEF_NONE;
+#endif
     priority = 0;
     login_limit = -2;
     login_limit_def = LIMITS_DEF_NONE;
     return retval;
-}    
+}
 
 static void process_limit(int source, const char *lim_type,
 			  const char *lim_item, const char *lim_value,
@@ -315,6 +321,10 @@
 	limit_item = RLIMIT_MEMLOCK;
     else if (strcmp(lim_item, "as") == 0)
 	limit_item = RLIMIT_AS;
+#ifdef RLIMIT_LOCKS
+    else if (strcmp(lim_item, "locks") == 0)
+	limit_item = RLIMIT_LOCKS;
+#endif
     else if (strcmp(lim_item, "maxlogins") == 0) {
 	limit_item = LIMIT_LOGIN;
 	flag_numsyslogins = 0;