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Re: [Qemu-block] [PATCH v2 2/3] block/file-posix: File locking during cr
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From: |
Fam Zheng |
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Subject: |
Re: [Qemu-block] [PATCH v2 2/3] block/file-posix: File locking during creation |
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Date: |
Thu, 10 May 2018 10:07:55 +0800 |
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User-agent: |
Mutt/1.9.2 (2017-12-15) |
On Wed, 05/09 23:53, Max Reitz wrote:
> When creating a file, we should take the WRITE and RESIZE permissions.
> We do not need either for the creation itself, but we do need them for
> clearing and resizing it. So we can take the proper permissions by
> replacing O_TRUNC with an explicit truncation to 0, and by taking the
> appropriate file locks between those two steps.
>
> Signed-off-by: Max Reitz <address@hidden>
Reviewed-by: Fam Zheng <address@hidden>