X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=server-src%2Ftaperscan.h;h=b57ec9a5eccb03a1eb4e540e57e9aa70527e652c;hb=d97071000e65ce0c52c9043046acdc1c125397b0;hp=39190fb56beeb18593587a5eaeb2d2bf040ec7b6;hpb=1194fb66aa28d9929c3f2bef3cc6c1c3f40a60a4;p=debian%2Famanda

diff --git a/server-src/taperscan.h b/server-src/taperscan.h
index 39190fb..b57ec9a 100644
--- a/server-src/taperscan.h
+++ b/server-src/taperscan.h
@@ -1,10 +1,9 @@
 /*
- * Copyright (c) 2005 Zmanda Inc.  All Rights Reserved.
+ * Copyright (c) 2005-2008 Zmanda Inc.  All Rights Reserved.
  * 
  * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
  * 
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
@@ -15,18 +14,24 @@
  * with this program; if not, write to the Free Software Foundation, Inc.,
  * 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  * 
- * Contact information: Zmanda Inc, 505 N Mathlida Ave, Suite 120
- * Sunnyvale, CA 94085, USA, or: http://www.zmanda.com
+ * Contact information: Zmanda Inc, 465 S Mathlida Ave, Suite 300
+ * Sunnyvale, CA 94086, USA, or: http://www.zmanda.com
  */
 
 /*
- * $Id: taperscan.h,v 1.1 2005/12/21 19:07:51 paddy_s Exp $
+ * $Id: taperscan.h,v 1.3 2006/05/25 01:47:20 johnfranks Exp $
  *
  * This contains the interface to the tape-scan algorithm implementation.
  * The interface is rather simple: Calling programs (taper, amcheck,
  * amtape) call the function below with a desired tape label, and get back
  * all the relevant label information, along with any other error messages.
  */
+#ifndef TAPERSCAN_H
+#define TAPERSCAN_H
+
+#include <device.h>
+
+typedef struct taper_scan_tracker_s taper_scan_tracker_t;
 
 /* taper_scan(): Scans the changer to find a tape to use. Reads the tape
  *               label, or invents a new one if label_new_tapes is in use.
@@ -34,6 +39,10 @@
  *               re-read, because there may not actually exist a label
  *               on-tape (for WORM or newly-labeled media).
  *
+ *               This function may be run multiple times consecutively with
+ *               the same tracker; each run will return a different elegible
+ *               tape. The 
+ *
  * Inputs: wantlabel
  * Outputs: Returns: -1 if an error occured or no tape was found.
  *                    1 if the most desirable tape was found.
@@ -44,9 +53,30 @@
  *         timestamp: What the timestamp string on-tape was. May be "X".
  *     error_message: Debugging output.
  *           tapedev: What device to use from now on.
+ *           tracker: Pointer to an allocated taper_scan_tracker_t, used for
+ *                    persistance between runs.
  *
  * All returned strings are newly-allocated. */
 
-int taper_scan P((char* wantlabel,
-                  char** gotlabel, char** timestamp, char** error_message,
-                  char **tapedev));
+typedef void (*TaperscanOutputFunctor)(void * data, char * msg);
+typedef gboolean (*TaperscanProlongFunctor)(void *data);
+
+int taper_scan (char* wantlabel,
+                char** gotlabel, char** timestamp,
+                char **tapedev,
+                taper_scan_tracker_t* tracker,
+                TaperscanOutputFunctor output_functor,
+                void *output_data,
+                TaperscanProlongFunctor prolong_functor,
+                void *prolong_data
+                );
+void FILE_taperscan_output_callback(void *data, char *msg);
+void CHAR_taperscan_output_callback(void *data, char *msg);
+
+/* Returns a newly allocated tracker object. */
+taper_scan_tracker_t* taper_scan_tracker_new(void);
+
+/* Frees a tracker object. */
+void taper_scan_tracker_free(taper_scan_tracker_t*);
+
+#endif	/* !TAPERSCAN_H */