Review Request: check if enough disk space available before even starting to copy each file

[Commit Hook]

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This review has been submitted with commit 50ccd8f037eb6c412260d49afcf8e5b9f1d8afa0 by Nick Shaforostoff to branch KDE/4.7.

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On Dec. 16, 2011, 1:28 p.m., Nick Shaforostoff wrote:
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> (Updated Dec. 16, 2011, 1:28 p.m.)
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> 
> Review request for kdelibs.
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> Description
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> this is simple fix for 243160. It gets free space info for the dst partition, then after each successful file copy it decreases an internally kept m_freeSpace value.
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> this will help us avoid situations when user copies a 4gb long file onto his disk, then finds out it has not enough space available.
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> i hope that i correctly understood kio copy job mechanism and done error reporting right.
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> TODO (from what was asked in the bug):
> *checking for single file size limit on vfat.
> *if the total size is larger than free space, warn user beforehand immediately
> (right now it does the copying until it finds that the next file cannot be copied completely)
> both these require new dialogs with user visible strings and are subject to be added after 4.8.
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> 
> also as a bonus i changed m_overwriteList to be qset instead of qlist to make lookup operations faster.
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> This addresses bug 243160.
>     http://bugs.kde.org/show_bug.cgi?id=243160
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> 
> Diffs
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>   kio/kio/copyjob.cpp eff7825 
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> Diff: http://git.reviewboard.kde.org/r/103412/diff/diff
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> Testing
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> files get copied fine. if i copy a bunch of files including one big file
> (created with dd if=/dev/zero of=file.out bs=1MB count=300), then the copying process stops when it gets to this big file (i have small disk on my virtual machine, only 400 mb free)
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> 
> Thanks,
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> Nick Shaforostoff
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>

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