/*
* Block definitions for Bacula media data format.
*
- * Kern Sibbald
+ * Kern Sibbald, MM
*
* Version $Id$
*
*/
/*
- Copyright (C) 2000, 2001, 2002 Kern Sibbald and John Walker
+ Bacula® - The Network Backup Solution
- 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.
+ Copyright (C) 2000-2006 Free Software Foundation Europe e.V.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
+ The main author of Bacula is Kern Sibbald, with contributions from
+ many others, a complete list can be found in the file AUTHORS.
+ This program is Free Software; you can redistribute it and/or
+ modify it under the terms of version two of the GNU General Public
+ License as published by the Free Software Foundation plus additions
+ that are listed in the file LICENSE.
+
+ 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.
+ 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
- */
+ Bacula® is a registered trademark of John Walker.
+ The licensor of Bacula is the Free Software Foundation Europe
+ (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
+ Switzerland, email:ftf@fsfeurope.org.
+*/
#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. */
-#define BLKHDR_ID "BB01"
+#define BLKHDR1_ID "BB01"
+#define BLKHDR2_ID "BB02"
#define BLKHDR_ID_LENGTH 4
#define BLKHDR_CS_LENGTH 4 /* checksum length */
-#define BLKHDR_LENGTH 16 /* Total length */
+#define BLKHDR1_LENGTH 16 /* Total length */
+#define BLKHDR2_LENGTH 24 /* Total length */
+
+#define WRITE_BLKHDR_ID BLKHDR2_ID
+#define WRITE_BLKHDR_LENGTH BLKHDR2_LENGTH
+#define BLOCK_VER 2
+
+/* Record header definitions */
+#define RECHDR1_LENGTH 20
+#define RECHDR2_LENGTH 12
+#define WRITE_RECHDR_LENGTH RECHDR2_LENGTH
+
+/* Tape label and version definitions */
+#define BaculaId "Bacula 1.0 immortal\n"
+#define OldBaculaId "Bacula 0.9 mortal\n"
+#define BaculaTapeVersion 11
+#define OldCompatibleBaculaTapeVersion1 10
+#define OldCompatibleBaculaTapeVersion2 9
+
/*
* This is the Media structure for a block header
* Note, when written, it is serialized.
- */
-typedef struct s_block_hdr {
+
uint32_t CheckSum;
- uint32_t block_size;
+ uint32_t block_len;
uint32_t BlockNumber;
- char Id[BLKHDR_ID_LENGTH+1];
-} BLOCK_HDR;
+ char Id[BLKHDR_ID_LENGTH];
+
+ * for BB02 block, we also have
+
+ uint32_t VolSessionId;
+ uint32_t VolSessionTime;
+ */
+
+class DEVICE; /* for forward reference */
/*
* DEV_BLOCK for reading and writing blocks.
*
* This is the memory structure for a device block.
*/
-typedef struct s_dev_block {
- struct s_dev_block *next; /* pointer to next one */
- /* 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.
+struct DEV_BLOCK {
+ DEV_BLOCK *next; /* pointer to next one */
+ 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.
*/
uint32_t binbuf; /* bytes in buffer */
uint32_t block_len; /* length of current block read */
uint32_t buf_len; /* max/default block length */
- uint32_t BlockNumber; /* sequential block number */
- uint32_t read_len; /* bytes read into buffer */
- int failed_write; /* set if write failed */
- char *bufp; /* pointer into buffer */
- POOLMEM *buf; /* actual data buffer. This is a
- * Pool buffer!
- */
-} DEV_BLOCK;
+ uint32_t BlockNumber; /* sequential Bacula block number */
+ 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 */
+ int32_t FirstIndex; /* first index this block */
+ int32_t LastIndex; /* last index this block */
+ char *bufp; /* pointer into buffer */
+ POOLMEM *buf; /* actual data buffer */
+};
+
+#define block_is_empty(block) ((block)->read_len == 0)
#endif
projects / bacula / bacula / blobdiff