[Bug 7544] New: flashcp -v progress does not reach 100% reliably

bugzilla at busybox.net bugzilla at busybox.net
Fri Oct 17 13:07:31 UTC 2014


           Summary: flashcp -v progress does not reach 100% reliably
           Product: Busybox
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: trivial
          Priority: P5
         Component: Other
        AssignedTo: unassigned at busybox.net
        ReportedBy: ralphs at netwinder.org
                CC: busybox-cvs at busybox.net
   Estimated Hours: 0.0

Created attachment 5732
  --> https://bugs.busybox.net/attachment.cgi?id=5732
One possible fix. Has been tested using MTD_DEBUG.

This is very minor issue, but can cause confusion for end-users. Recent

On certain sized files (for example, 3051kB), the output from verbose mode
("flashcp -v") is a bit misleading:

Erasing block: 48/48 (100%) 
Writing kb: 3048/3051 (99%) 
Verifying kb: 3048/3051 (99%)

In fact, all 3051kB were correctly written, even though it only shows 99%
complete. This is because progress() reporting occurs before writing data, and
no report occurs after the final (often partial) block is written.

This can easily be fixed by either:
- moving the existing progress() function call towards the end of the loop, or
- adding another call to progress() at the end of the loop to print 100%.

A trivial patch is attached. This produces the expected output:

Erasing block: 48/48 (100%) 
Writing kb: 3051/3051 (100%) 
Verifying kb: 3051/3051 (100%)

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