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Date: Tue, 27 Oct 2020 08:02:31 +0100
From: "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
To: Érico Rolim <erico.erc@...il.com>
Cc: mtk.manpages@...il.com, linux-man@...r.kernel.org,
musl@...ts.openwall.com, ericonr@...root.org
Subject: Re: [PATCH v3] posix_fallocate.3: add EOPNOTSUPP error code.
Hello Éric,
On 10/27/20 12:21 AM, Érico Rolim wrote:
> As can be seen in
>
> https://git.musl-libc.org/cgit/musl/tree/src/fcntl/posix_fallocate.c?id=73cc775bee53300c7cf759f37580220b18ac13d3
>
> musl libc returns the syscall's errors directly, which means it doesn't
> perform the same emulation as glibc, and can return EOPNOTSUPP to an
> application, which isnt't listed in ERRORS.
Thanks. Patch applied.
(By the way, your mailer is wrapping text in the patch;
I manually fixed.)
Thanks,
Michael
> ---
>
> Made a small correction to the formatting for fd.
>
> man3/posix_fallocate.3 | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/man3/posix_fallocate.3 b/man3/posix_fallocate.3
> index 3152dd54f..8ea37261a 100644
> --- a/man3/posix_fallocate.3
> +++ b/man3/posix_fallocate.3
> @@ -98,6 +98,13 @@ There is not enough space left on the device
> containing the file
> referred to by
> .IR fd .
> .TP
> +.B EOPNOTSUPP
> +The filesystem containing the file referred to by
> +.I fd
> +does not support this operation.
> +This error code can be returned by libc's that don't perform the
> +emulation shown in NOTES, such as musl libc.
> +.TP
> .B ESPIPE
> .I fd
> refers to a pipe.
>
--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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