Move CCAPI sources to krb5 repository

ticket: new
status: open

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@19564 dc483132-0cff-0310-8789-dd5450dbe970

1 files changed, 245 insertions, 0 deletions

diff --git a/src/ccapi/server/ccs_lock.c b/src/ccapi/server/ccs_lock.c
new file mode 100644
index 000000000..939da5e12
--- /dev/null
+++ b/src/ccapi/server/ccs_lock.c
@@ -0,0 +1,245 @@
+/*
+ * $Header$
+ *
+ * Copyright 2006 Massachusetts Institute of Technology.
+ * All Rights Reserved.
+ *
+ * Export of this software from the United States of America may
+ * require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission.  Furthermore if you modify this software you must label
+ * your software as modified software and not distribute it in such a
+ * fashion that it might be confused with the original M.I.T. software.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#include "ccs_common.h"
+
+struct ccs_lock_d {
+    cc_uint32 type;
+    cc_uint32 pending;
+    cc_int32  invalid_object_err;
+    ccs_pipe_t client_pipe;
+    ccs_pipe_t reply_pipe;
+};
+
+struct ccs_lock_d ccs_lock_initializer = { 0, 1, 1, NULL, NULL };
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 ccs_lock_new (ccs_lock_t *out_lock,
+                       cc_uint32   in_type,
+                       cc_int32    in_invalid_object_err,
+                       ccs_pipe_t  in_client_pipe,
+                       ccs_pipe_t  in_reply_pipe)
+{
+    cc_int32 err = ccNoError;
+    ccs_lock_t lock = NULL;
+    
+    if (!out_lock                       ) { err = cci_check_error (ccErrBadParam); }
+    if (!ccs_pipe_valid (in_client_pipe)) { err = cci_check_error (ccErrBadParam); }
+    if (!ccs_pipe_valid (in_reply_pipe) ) { err = cci_check_error (ccErrBadParam); }
+    
+    if (in_type != cc_lock_read && 
+        in_type != cc_lock_write &&
+        in_type != cc_lock_upgrade &&
+        in_type != cc_lock_downgrade) { 
+        err = cci_check_error (ccErrBadLockType); 
+    }
+    
+    if (!err) {
+        lock = malloc (sizeof (*lock));
+        if (lock) { 
+            *lock = ccs_lock_initializer;
+        } else {
+            err = cci_check_error (ccErrNoMem); 
+        }
+    }
+    
+    if (!err) {
+        err = ccs_pipe_copy (&lock->client_pipe, in_client_pipe);
+    }
+    
+    if (!err) {
+        err = ccs_pipe_copy (&lock->reply_pipe, in_reply_pipe);
+    }
+    
+    if (!err) {
+        lock->type = in_type;
+        lock->invalid_object_err = in_invalid_object_err;
+        
+        *out_lock = lock;
+        lock = NULL;
+    }
+    
+    ccs_lock_release (lock);
+    
+    return cci_check_error (err);    
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 ccs_lock_release (ccs_lock_t io_lock)
+{
+    cc_int32 err = ccNoError;
+    
+    if (!io_lock) { err = cci_check_error (ccErrBadParam); }
+    
+    if (!err && io_lock->pending) {
+        err = ccs_server_send_reply (io_lock->reply_pipe, 
+                                     io_lock->invalid_object_err, NULL);
+    }
+    
+    if (!err) {
+        ccs_pipe_release (io_lock->client_pipe);
+        ccs_pipe_release (io_lock->reply_pipe);
+        free (io_lock);
+    }
+    
+    return cci_check_error (err);    
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 ccs_lock_grant_lock (ccs_lock_t io_lock)
+{
+    cc_int32 err = ccNoError;
+    
+    if (!io_lock) { err = cci_check_error (ccErrBadParam); }
+    
+    if (!err) {
+        if (io_lock->pending) {
+            err = ccs_server_send_reply (io_lock->reply_pipe, err, NULL);
+            
+            if (!err) {
+                ccs_pipe_release (io_lock->reply_pipe);
+                io_lock->pending = 0;
+                io_lock->reply_pipe = NULL;
+            }
+        } else {
+            cci_debug_printf ("WARNING %s() called on non-pending lock!", 
+                              __FUNCTION__);
+        }
+    }
+    
+    return cci_check_error (err);    
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_uint32 ccs_lock_is_pending (ccs_lock_t  in_lock,
+                               cc_uint32  *out_pending)
+{
+    cc_int32 err = ccNoError;
+    
+    if (!in_lock    ) { err = cci_check_error (ccErrBadParam); }
+    if (!out_pending) { err = cci_check_error (ccErrBadParam); }
+    
+    if (!err) {
+        *out_pending = in_lock->pending;
+    }
+    
+    return cci_check_error (err);    
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 ccs_lock_type (ccs_lock_t  in_lock,
+                        cc_uint32  *out_lock_type)
+{
+    cc_int32 err = ccNoError;
+    
+    if (!in_lock      ) { err = cci_check_error (ccErrBadParam); }
+    if (!out_lock_type) { err = cci_check_error (ccErrBadParam); }
+    
+    if (!err) {
+        *out_lock_type = in_lock->type;
+    }
+    
+    return cci_check_error (err);    
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 ccs_lock_is_read_lock (ccs_lock_t  in_lock,
+                                cc_uint32  *out_is_read_lock)
+{
+    cc_int32 err = ccNoError;
+    
+    if (!in_lock         ) { err = cci_check_error (ccErrBadParam); }
+    if (!out_is_read_lock) { err = cci_check_error (ccErrBadParam); }
+    
+    if (!err) {
+        *out_is_read_lock = (in_lock->type == cc_lock_read || 
+                             in_lock->type == cc_lock_downgrade);
+    }
+    
+    return cci_check_error (err);    
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 ccs_lock_is_write_lock (ccs_lock_t  in_lock,
+                                 cc_uint32  *out_is_write_lock)
+{
+    cc_int32 err = ccNoError;
+    
+    if (!in_lock          ) { err = cci_check_error (ccErrBadParam); }
+    if (!out_is_write_lock) { err = cci_check_error (ccErrBadParam); }
+    
+    if (!err) {
+        *out_is_write_lock = (in_lock->type == cc_lock_write || 
+                              in_lock->type == cc_lock_upgrade);
+    }
+    
+    return cci_check_error (err);    
+}
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 ccs_lock_is_for_client (ccs_lock_t     in_lock,
+                                 ccs_pipe_t     in_client_pipe,
+                                 cc_uint32     *out_is_for_client)
+{
+    cc_int32 err = ccNoError;
+    
+    if (!in_lock                        ) { err = cci_check_error (ccErrBadParam); }
+    if (!out_is_for_client              ) { err = cci_check_error (ccErrBadParam); }
+    if (!ccs_pipe_valid (in_client_pipe)) { err = cci_check_error (ccErrBadParam); }
+    
+    if (!err) {
+        err = ccs_pipe_compare (in_lock->client_pipe, in_client_pipe, 
+                                out_is_for_client);
+    }
+    
+    return cci_check_error (err);    
+}
+
+
+/* ------------------------------------------------------------------------ */
+
+cc_int32 ccs_lock_client (ccs_lock_t  in_lock,
+                          ccs_pipe_t *out_client_pipe)
+{
+    cc_int32 err = ccNoError;
+    
+    if (!in_lock        ) { err = cci_check_error (ccErrBadParam); }
+    if (!out_client_pipe) { err = cci_check_error (ccErrBadParam); }
+    
+    if (!err) {
+        *out_client_pipe = in_lock->client_pipe;
+    }
+    
+    return cci_check_error (err);    
+}