[libvirt] [PATCH] virFileInData: Report an error if unable to reposition file

[John Ferlan]

On 07/11/2017 05:05 AM, Michal Privoznik wrote:
> The purpose of this function is to tell if the current position
> in given FD is in data section or a hole and how much bytes there
> is remaining until the end of the section. This is achieved by
> couple of lseeks(). The most important part is that we reposition
> the FD back, so that the position is unchanged from the caller
> POV. And until now the final lseek() back to the original
> position was done with no check for errors. And I was convinced
> that that's okay since nothing can go wrong. However, John

Good thing there's only one John ;-)   Perhaps better said, "review
feedback from a related series persuaded me..."

> persuaded me, that it's better to be safe than sorry. Therefore,
> lets check if the final lseek() succeeded and if it doesn't
> report an error.
> 
> Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
> ---
>  src/util/virfile.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 

Reviewed-by: John Ferlan <jferlan at redhat.com>

John