libkadm5 should allow persistent locks

libkadm5 should have a way to persistently lock the databases to avoid
wasting time on closing and reopening.  These patches implement
persistent exclusive locks for local access only.

ticket: new
target_version: 1.3

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@14914 dc483132-0cff-0310-8789-dd5450dbe970

1 files changed, 45 insertions, 0 deletions

diff --git a/src/kadmin/cli/kadmin.c b/src/kadmin/cli/kadmin.c
index b3308797a7..72dc594b86 100644
--- a/src/kadmin/cli/kadmin.c
+++ b/src/kadmin/cli/kadmin.c
@@ -93,6 +93,8 @@ void *handle = NULL;
 krb5_context context;
 char *ccache_name = NULL;
 
+int locked = 0;
+
 static void usage()
 {
     fprintf(stderr,
@@ -465,6 +467,17 @@ char *kadmin_startup(argc, argv)
 
 int quit()
 {
+    kadm5_ret_t retval;
+
+    if (locked) {
+	retval = kadm5_unlock(handle);
+	if (retval) {
+	    com_err("quit", retval, "while unlocking locked database");
+	    return 1;
+	}
+	locked = 0;
+    }
+
      kadm5_destroy(handle);
      if (ccache_name != NULL) {
 	  fprintf(stderr,
@@ -477,6 +490,38 @@ int quit()
      return 0;
 }
 
+void kadmin_lock(argc, argv)
+    int argc;
+    char *argv[];
+{
+    kadm5_ret_t retval;
+
+    if (locked)
+	return;
+    retval = kadm5_lock(handle);
+    if (retval) {
+	com_err("lock", retval, "");
+	return;
+    }
+    locked = 1;
+}
+
+void kadmin_unlock(argc, argv)
+    int argc;
+    char *argv[];
+{
+    kadm5_ret_t retval;
+
+    if (!locked)
+	return;
+    retval = kadm5_lock(handle);
+    if (retval) {
+	com_err("unlock", retval, "");
+	return;
+    }
+    locked = 0;
+}
+
 void kadmin_delprinc(argc, argv)
     int argc;
     char *argv[];