2 * Record, and label definitions for Bacula
11 Copyright (C) 2000-2006 Kern Sibbald
13 This program is free software; you can redistribute it and/or
14 modify it under the terms of the GNU General Public License
15 version 2 as amended with additional clauses defined in the
16 file LICENSE in the main source directory.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 the file LICENSE for additional details.
29 /* Return codes from read_device_volume_label() */
31 VOL_NOT_READ = 1, /* Volume label not read */
32 VOL_OK, /* volume name OK */
33 VOL_NO_LABEL, /* volume not labeled */
34 VOL_IO_ERROR, /* volume I/O error */
35 VOL_NAME_ERROR, /* Volume name mismatch */
36 VOL_CREATE_ERROR, /* Error creating label */
37 VOL_VERSION_ERROR, /* Bacula version error */
38 VOL_LABEL_ERROR, /* Bad label type */
39 VOL_NO_MEDIA /* Hard error -- no media present */
43 /* See block.h for RECHDR_LENGTH */
46 * This is the Media structure for a record header.
47 * NB: when it is written it is serialized.
49 uint32_t VolSessionId;
50 uint32_t VolSessionTime;
52 * The above 8 bytes are only written in a BB01 block, BB02
53 * and later blocks contain these values in the block header
54 * rather than the record header.
62 /* Record state bit definitions */
63 #define REC_NO_HEADER (1<<0) /* No header read */
64 #define REC_PARTIAL_RECORD (1<<1) /* returning partial record */
65 #define REC_BLOCK_EMPTY (1<<2) /* not enough data in block */
66 #define REC_NO_MATCH (1<<3) /* No match on continuation data */
67 #define REC_CONTINUATION (1<<4) /* Continuation record found */
68 #define REC_ISTAPE (1<<5) /* Set if device is tape */
70 #define is_partial_record(r) ((r)->state & REC_PARTIAL_RECORD)
71 #define is_block_empty(r) ((r)->state & REC_BLOCK_EMPTY)
74 * DEV_RECORD for reading and writing records.
75 * It consists of a Record Header, and the Record Data
77 * This is the memory structure for the record header.
79 struct BSR; /* satisfy forward reference */
81 dlink link; /* link for chaining in read_record.c */
82 /* File and Block are always returned during reading
83 * and writing records.
85 uint32_t File; /* File number */
86 uint32_t Block; /* Block number */
87 uint32_t VolSessionId; /* sequential id within this session */
88 uint32_t VolSessionTime; /* session start time */
89 int32_t FileIndex; /* sequential file number */
90 int32_t Stream; /* stream number */
91 uint32_t data_len; /* current record length */
92 uint32_t remainder; /* remaining bytes to read/write */
93 uint32_t state; /* state bits */
94 BSR *bsr; /* pointer to bsr that matched */
95 uint8_t ser_buf[WRITE_RECHDR_LENGTH]; /* serialized record header goes here */
96 POOLMEM *data; /* Record data. This MUST be a memory pool item */
97 int32_t match_stat; /* bsr match status */
102 * Values for LabelType that are put into the FileIndex field
103 * Note, these values are negative to distinguish them
104 * from user records where the FileIndex is forced positive.
106 #define PRE_LABEL -1 /* Vol label on unwritten tape */
107 #define VOL_LABEL -2 /* Volume label first file */
108 #define EOM_LABEL -3 /* Writen at end of tape */
109 #define SOS_LABEL -4 /* Start of Session */
110 #define EOS_LABEL -5 /* End of Session */
111 #define EOT_LABEL -6 /* End of physical tape (2 eofs) */
114 * Volume Label Record. This is the in-memory definition. The
115 * tape definition is defined in the serialization code itself
116 * ser_volume_label() and unser_volume_label() and is slightly different.
120 struct Volume_Label {
122 * The first items in this structure are saved
123 * in the DEVICE buffer, but are not actually written
126 int32_t LabelType; /* This is written in header only */
127 uint32_t LabelSize; /* length of serialized label */
129 * The items below this line are stored on
132 char Id[32]; /* Bacula Immortal ... */
134 uint32_t VerNum; /* Label version number */
137 float64_t label_date; /* Date tape labeled */
138 float64_t label_time; /* Time tape labeled */
141 btime_t label_btime; /* tdate tape labeled */
142 btime_t write_btime; /* tdate tape written */
144 /* Unused with VerNum >= 11 */
145 float64_t write_date; /* Date this label written */
146 float64_t write_time; /* Time this label written */
148 char VolumeName[MAX_NAME_LENGTH]; /* Volume name */
149 char PrevVolumeName[MAX_NAME_LENGTH]; /* Previous Volume Name */
150 char PoolName[MAX_NAME_LENGTH]; /* Pool name */
151 char PoolType[MAX_NAME_LENGTH]; /* Pool type */
152 char MediaType[MAX_NAME_LENGTH]; /* Type of this media */
154 char HostName[MAX_NAME_LENGTH]; /* Host name of writing computer */
155 char LabelProg[50]; /* Label program name */
156 char ProgVersion[50]; /* Program version */
157 char ProgDate[50]; /* Program build date/time */
160 #define SER_LENGTH_Volume_Label 1024 /* max serialised length of volume label */
161 #define SER_LENGTH_Session_Label 1024 /* max serialised length of session label */
163 typedef struct Volume_Label VOLUME_LABEL;
166 * Session Start/End Label
167 * This record is at the beginning and end of each session
169 struct Session_Label {
170 char Id[32]; /* Bacula Immortal ... */
172 uint32_t VerNum; /* Label version number */
174 uint32_t JobId; /* Job id */
175 uint32_t VolumeIndex; /* Sequence no of volume for this job */
178 btime_t write_btime; /* Tdate this label written */
181 float64_t write_date; /* Date this label written */
183 /* Unused VerNum >= 11 */
184 float64_t write_time; /* Time this label written */
186 char PoolName[MAX_NAME_LENGTH]; /* Pool name */
187 char PoolType[MAX_NAME_LENGTH]; /* Pool type */
188 char JobName[MAX_NAME_LENGTH]; /* base Job name */
189 char ClientName[MAX_NAME_LENGTH];
190 char Job[MAX_NAME_LENGTH]; /* Unique name of this Job */
191 char FileSetName[MAX_NAME_LENGTH];
192 char FileSetMD5[MAX_NAME_LENGTH];
195 /* The remainder are part of EOS label only */
203 uint32_t JobStatus; /* Job status */
206 typedef struct Session_Label SESSION_LABEL;
208 #define SERIAL_BUFSIZE 1024 /* volume serialisation buffer size */