24Mar06

[bacula/bacula] / bacula / src / stored / block.h

diff --git a/bacula/src/stored/block.h b/bacula/src/stored/block.h
index 2972bded93d8ebed176adffaf44ba7ec4629a963..6a2545bc4b4dddaf4c3110e73ae216477acb94c4 100644 (file)
--- a/bacula/src/stored/block.h
+++ b/bacula/src/stored/block.h
@@ -7,22 +7,17 @@
  *
  */
 /*
-   Copyright (C) 2000-2003 Kern Sibbald and John Walker
+   Copyright (C) 2000-2006 Kern Sibbald
 
    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.
+   modify it under the terms of the GNU General Public License
+   version 2 as amended with additional clauses defined in the
+   file LICENSE in the main source directory.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-   General Public License for more details.
-
-   You should have received a copy of the GNU General Public
-   License along with this program; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-   MA 02111-1307, USA.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
+   the file LICENSE for additional details.
 
  */
 
@@ -30,7 +25,7 @@
 #ifndef __BLOCK_H
 #define __BLOCK_H 1
 
-#define MAX_BLOCK_LENGTH    500001      /* this is a sort of sanity check */
+#define MAX_BLOCK_LENGTH  (1024*1024 + 1) /* this is a sort of sanity check */
 #define DEFAULT_BLOCK_SIZE (512 * 126)  /* 64,512 N.B. do not use 65,636 here */
 
 /* Block Header definitions. */
@@ -63,7 +58,7 @@
  *  Note, when written, it is serialized.
 
    uint32_t CheckSum;
-   uint32_t block_len; 
+   uint32_t block_len;
    uint32_t BlockNumber;
    char     Id[BLKHDR_ID_LENGTH];
 
@@ -73,6 +68,8 @@
    uint32_t VolSessionTime;
  */
 
+class DEVICE;                         /* for forward reference */
+
 /*
  * DEV_BLOCK for reading and writing blocks.
  * This is the basic unit that is written to the device, and
@@ -84,7 +81,7 @@
  */
 struct DEV_BLOCK {
    DEV_BLOCK *next;                   /* pointer to next one */
-   void *dev;                         /* pointer to device (DEVICE not defined yet) */
+   DEVICE *dev;                       /* pointer to device */
    /* binbuf is the number of bytes remaining in the buffer.
     *   For writes, it is bytes not yet written.
     *   For reads, it is remaining bytes not yet read.
@@ -96,6 +93,7 @@ struct DEV_BLOCK {
    uint32_t read_len;                 /* bytes read into buffer, if zero, block empty */
    uint32_t VolSessionId;             /* */
    uint32_t VolSessionTime;           /* */
+   uint32_t read_errors;              /* block errors (checksum, header, ...) */
    int      BlockVer;                 /* block version 1 or 2 */
    bool     write_failed;             /* set if write failed */
    bool     block_read;               /* set when block read */
@@ -105,6 +103,6 @@ struct DEV_BLOCK {
    POOLMEM *buf;                      /* actual data buffer */
 };
 
-#define block_is_empty(block) !((block)->read_len)
+#define block_is_empty(block) ((block)->read_len == 0)
 
 #endif