From: Stefan Metzmacher <[email protected]>
To: Tim Fox <[email protected]>, [email protected]
Subject: Re: Support for random access file reads
Date: Wed, 4 Nov 2020 12:08:03 +0100 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAMkGPyK=9bztK-2Ckg-2pOUhxugzXO=0-KGH4NL6+KQFnq7vBg@mail.gmail.com>
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Hi Tim,
> I am new to io-uring and would like to read bytes from a specific
> position in a file. I was looking for some kind of pread/preadv
> functionality in io-uring but couldn't see any.
>
> Perhaps the expectation that the file descriptor offset is explicitly
> set via lseek outside of io-uring, to enable random file access use
> cases like mine?
Look for IORING_OP_READ/IORING_OP_READV and io_uring_prep_read/io_uring_prep_readv() they
all take an offset.
metze
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prev parent reply other threads:[~2020-11-04 11:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-04 10:51 Support for random access file reads Tim Fox
2020-11-04 11:08 ` Stefan Metzmacher [this message]
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