[Libvir] Don't fail to read a file because it's non-seekable (e.g., a pipe).

[Daniel P. Berrange]

On Tue, Apr 08, 2008 at 04:04:53PM +0100, Richard W.M. Jones wrote:
> On Tue, Apr 08, 2008 at 05:00:03PM +0200, Jim Meyering wrote:
> > This fix addresses a problem exposed in an ovirt script whereby
> > trying to use bash process substitution, e.g., in
> > virsh define <(command to generate xml)
> > would fail.
> > 
> > Oops.  Just noticed that the indentation in the added function
> > (gnulib style) is not consistent with the rest of the file.
> > I'll adjust that before committing, of course.
> > 
> > 	Don't fail to read a file because it's non-seekable (e.g., a pipe).
> > 	* src/util.c (fread_file_lim): New function.
> > 	(__virFileReadAll): Use fread_file_lim, rather than requiring
> > 	that stat.st_size provide a usable file size.
> > 	* tests/read-non-seekable: New test, for the above.
> > 	* tests/Makefile.am (test_scripts): Add read-non-seekable.
> > 	* tests/test-lib.sh (mkfifo_or_skip_): New helper function.
> 
> This fix looks good.  In fact I'd go further and remove the test for
> S_ISDIR(st.st_mode) and the stat buffer altogether.

Yep I agree - patch looks good aside from that.

Dan.
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