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2018.12.11 13:36 "SeekOK and WriteOK", by Emmanuel Cosnard
2018.12.11 14:01 "Re: SeekOK and WriteOK", by Bob Friesenhahn
2018.12.11 14:09 "Re: SeekOK and WriteOK", by Emmanuel Cosnard
2018.12.11 14:24 "Re: SeekOK and WriteOK", by Emmanuel Cosnard
2018.12.11 14:29 "Re: SeekOK and WriteOK", by Nicolas Ruff
2018.12.11 18:54 "Re: SeekOK and WriteOK", by Bob Friesenhahn
2018.12.12 08:53 "Re: SeekOK and WriteOK", by Emmanuel Cosnard
2018.12.13 11:04 "Re: SeekOK and WriteOK", by Emmanuel Cosnard
2018.12.13 13:13 "Re: SeekOK and WriteOK", by Paavo Helde

2018.12.11 18:54 "Re: SeekOK and WriteOK", by Bob Friesenhahn

On Tue, 11 Dec 2018, Nicolas RUFF wrote:

> This might be by design of the API :)
> http://bugzilla.maptools.org/show_bug.cgi?id=2726
>
> lseek() returns -1 in both cases:
> - lseek(-1, SEEK_SET)
> - An error occurred
>
> You have to clear then check errno to distinguish between cases.

One approach is to call 'lseek(fd,SEEK_CUR)' and verify that the 
return value is the expected offset.

Bob
-- 
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
Public Key,     http://www.simplesystems.org/users/bfriesen/public-key.txt
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