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From: Eric Blake <eblake@redhat.com>
To: Jeff Cody <jcody@redhat.com>, qemu-devel@nongnu.org
Cc: kwolf@redhat.com, stefanha@redhat.com
Subject: Re: [Qemu-devel] [PATCH 4/7] block: qemu-iotests, add quotes to $TEST_IMG usage in 019
Date: Thu, 31 Oct 2013 11:00:49 -0600	[thread overview]
Message-ID: <52728CC1.8000104@redhat.com> (raw)
In-Reply-To: <f63a770d20a201cdbaa6c38d827a8eb74048f2eb.1383231037.git.jcody@redhat.com>

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On 10/31/2013 09:57 AM, Jeff Cody wrote:
> There were still instances of $TEST_IMG not being properly quoted.
> This was in the usage of a string built up for a 'for' loop; modify
> the loop so we can quote $TEST_IMG properly.
> 
> Signed-off-by: Jeff Cody <jcody@redhat.com>
> ---
>  tests/qemu-iotests/019 | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)

> 
> diff --git a/tests/qemu-iotests/019 b/tests/qemu-iotests/019
> index cd3582c..5bb18d0 100755
> --- a/tests/qemu-iotests/019
> +++ b/tests/qemu-iotests/019
> @@ -90,12 +90,12 @@ mv "$TEST_IMG" "$TEST_IMG.orig"
>  # Test the conversion twice: One test with the old-style -B option and another
>  # one with -o backing_file
>  
> -for backing_option in "-B $TEST_IMG.base" "-o backing_file=$TEST_IMG.base"; do
> +for backing_option in "-B " "-o backing_file="; do
>  
>      echo
> -    echo Testing conversion with $backing_option | _filter_testdir | _filter_imgfmt
> +    echo Testing conversion with $backing_option$TEST_IMG.base | _filter_testdir | _filter_imgfmt

If $TEST_IMG has 2 consecutive spaces [*], this echo produces spurious
output (flattening to only 1 space).  To be completely robust, you must
quote here in the same manner...

>      echo
> -    $QEMU_IMG convert -O $IMGFMT $backing_option "$TEST_IMG.orig" "$TEST_IMG"
> +    $QEMU_IMG convert -O $IMGFMT $backing_option"$TEST_IMG.base" "$TEST_IMG.orig" "$TEST_IMG"

...as what you execute.  But as that corner case of misquoting doesn't
fail the test, your patch is a strict improvement, so I'm okay whether
you post a v2, or whether you keep this as-is and add:

Reviewed-by: Eric Blake <eblake@redhat.com>

[*] My favorite test for quoting bugs is renaming a directory to use
'two  spaces', because some quoting bugs are missed when you only test
'one space'.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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  reply	other threads:[~2013-10-31 17:58 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-31 15:57 [Qemu-devel] [PATCH 0/7] block: qemu-iotests, more quoting fixes Jeff Cody
2013-10-31 15:57 ` [Qemu-devel] [PATCH 1/7] block: qemu-iotests, add quotes to $TEST_IMG usage io pattern tests Jeff Cody
2013-10-31 16:23   ` Eric Blake
2013-10-31 15:57 ` [Qemu-devel] [PATCH 2/7] block: qemu-iotests, fix _make_test_img() to work with spaced pathnames Jeff Cody
2013-10-31 16:23   ` Eric Blake
2013-10-31 15:57 ` [Qemu-devel] [PATCH 3/7] block: qemu-iotests, add quotes to $TEST_IMG.base usage in 017 Jeff Cody
2013-10-31 16:25   ` Eric Blake
2013-10-31 15:57 ` [Qemu-devel] [PATCH 4/7] block: qemu-iotests, add quotes to $TEST_IMG usage in 019 Jeff Cody
2013-10-31 17:00   ` Eric Blake [this message]
2013-10-31 15:57 ` [Qemu-devel] [PATCH 5/7] block: qemu-iotests, removes duplicate double quotes in 039 Jeff Cody
2013-10-31 16:27   ` Eric Blake
2013-10-31 15:57 ` [Qemu-devel] [PATCH 6/7] block: qemu-iotests, add quotes to $TEST_IMG usage for 051 Jeff Cody
2013-10-31 17:03   ` Eric Blake
2013-10-31 15:57 ` [Qemu-devel] [PATCH 7/7] block: qemu-iotests, add quotes to $TEST_IMG usage in 061 Jeff Cody
2013-10-31 16:29   ` Eric Blake
2013-11-05 14:48 ` [Qemu-devel] [PATCH 0/7] block: qemu-iotests, more quoting fixes Stefan Hajnoczi

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