Difference between revisions of "Windows Job File Format"

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(Variable-length section)
(Triggers)
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==== Triggers ====
 
==== Triggers ====
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{| class="wikitable"
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|-
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! offset
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! size
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! value
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! description
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|-
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| 0
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| 2
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|
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| Number of triggers
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|-
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| 2
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| ...
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|
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| Array of triggers
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|}
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===== Trigger =====
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{| class="wikitable"
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|-
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! offset
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! size
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! value
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! description
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|-
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| 0
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| 2
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|
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| Trigger Size
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|-
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| 2
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| 2
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|
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| Reserved1
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|-
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| 4
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| 2
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|
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| Begin Year
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|-
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| 6
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| 2
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|
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| Begin Month
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|-
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| 8
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| 2
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|
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| Begin Day
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|-
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| 10
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| 2
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|
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| End Year
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|-
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| 12
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| 2
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|
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| End Month
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|-
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| 14
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| 2
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|
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| End Day
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|-
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| 16
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| 2
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|
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| Start Hour
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|-
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| 18
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| 2
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|
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| Start Minute
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|-
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| 20
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| 4
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|
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| Minutes Duration
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|-
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| 24
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| 4
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|
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| Minutes Interval
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|-
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| 28
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| 4
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|
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| Flags
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|-
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| 32
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| 4
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|
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| Trigger Type
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|-
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| 36
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| 2
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|
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| TriggerSpecific0
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|-
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| 38
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| 2
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|
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| TriggerSpecific1
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|-
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| 40
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| 2
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|
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| TriggerSpecific2
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|-
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| 42
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| 2
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|
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| Padding
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|-
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| 44
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| 2
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|
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| Reserved2
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|-
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| 46
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| 2
 +
|
 +
| Reserved3
 +
|}
  
 
==== Job Signature ====
 
==== Job Signature ====

Revision as of 11:18, 5 July 2014

Information icon.png

Please help to improve this article by expanding it.
Further information might be found on the discussion page.

Overview

On Windows a .JOB file specifies task configuration. A .JOB file consists of two main sections, fixed-length and variable-length.

Fixed-length section

The fixed-length section is 68 bytes in size and consists of:

offset size value description
0 2 Product version
2 2 File version
4 16 Job UUID (or GUID)
20 2 Application name size offset
The offset is relative from the start of the file.
22 2 Trigger offset
The offset is relative from the start of the file.
24 2 Error Retry Count
26 2 Error Retry Interval
28 2 Idle Deadline
30 2 Idle Wait
32 4 Priority
36 4 Maximum Run Time
40 4 Exit Code
44 4 Status
48 4 Flags
52 16 Last run time
Consists of a SYSTEMTIME

SYSTEMTIME

offset size value description
0 2 Year
2 2 Month
4 2 Weekday
6 2 Day
8 2 Hour
10 2 Minute
12 2 Second
14 2 Milli second

Priority

Value Identifier Description
0x00800000 REALTIME_PRIORITY_CLASS The task can run at the highest possible priority. The threads of a real-time priority class process preempt the threads of all other processes, including operating system processes performing important tasks.
0x01000000 HIGH_PRIORITY_CLASS The task performs time-critical tasks that can be executed immediately for it to run correctly. The threads of a high-priority class process preempt the threads of normal or idle priority class processes.
0x02000000 IDLE_PRIORITY_CLASS The task can run in a process whose threads run only when the machine is idle, and are preempted by the threads of any process running in a higher priority class.
0x04000000 NORMAL_PRIORITY_CLASS The task has no special scheduling requirements.

Status

Value Identifier Description
0x00041300 SCHED_S_TASK_READY Task is not running but is scheduled to run at some time in the future.
0x00041301 SCHED_S_TASK_RUNNING Task is currently running.
0x00041305 SCHED_S_TASK_NOT_SCHEDULED The task is not running and has no valid triggers.

Flags

See: Flags

Variable-length section

The variable-length section is variable in size and consists of:

offset size value description
0 2 Running Instance Count
2 ... Application Name
Consists of a Unicode string.
... ... Parameters
Consists of a Unicode string.
... ... Working Directory
Consists of a Unicode string.
... ... Author
Consists of a Unicode string.
... ... Comment
Consists of a Unicode string.
... ... User Data
... ... Reserved Data
... ... Triggers
... ... Job Signature

These values are stored as Unicode strings.

Unicode string

offset size value description
0 2 Number of characters
The value will be 0 if the string is empty.
2 ... String
UTF-16 little-endian with end-of-string character

User Data

offset size value description
0 2 data size
2 ... data

Reserved Data

The Reserved Data is similar in structure as the User Data though if a size is set, is should be 8 and the Reserved Data consists of:

offset size value description
0 2 8 data size
2 4 Start Error
6 4 Task Flags

Triggers

offset size value description
0 2 Number of triggers
2 ... Array of triggers
Trigger
offset size value description
0 2 Trigger Size
2 2 Reserved1
4 2 Begin Year
6 2 Begin Month
8 2 Begin Day
10 2 End Year
12 2 End Month
14 2 End Day
16 2 Start Hour
18 2 Start Minute
20 4 Minutes Duration
24 4 Minutes Interval
28 4 Flags
32 4 Trigger Type
36 2 TriggerSpecific0
38 2 TriggerSpecific1
40 2 TriggerSpecific2
42 2 Padding
44 2 Reserved2
46 2 Reserved3

Job Signature

offset size value description
0

See Also

External Links