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Re: af_alg: what if sendfile fails?
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From: |
Pádraig Brady |
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Subject: |
Re: af_alg: what if sendfile fails? |
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Date: |
Sun, 24 Jun 2018 15:58:08 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 |
On 24/06/18 15:40, Bruno Haible wrote:
> In afalg_stream, if the stream refers to a regular file, and sendfile() fails,
> do we have a guarantee that the offset of the file descriptor remains
> unchanged?
>
> The man page at http://man7.org/linux/man-pages/man2/sendfile.2.html doesn't
> say so.
I looked into this last night.
My reading was if &off is specified, the offset remains unchanged.
"If offset is not NULL, then sendfile()
does not modify the file offset of in_fd;"
So it doesn't look like this is required.
cheers,
Pádraig