From: Rich Felker <dalias@libc.org>
To: Stephen Von Takach <steve@place.technology>
Cc: musl@lists.openwall.com, Viv Briffa <viv@place.technology>
Subject: Re: unlink on NFS volume fails silently
Date: Wed, 9 Jul 2025 20:03:28 -0400 [thread overview]
Message-ID: <20250710000328.GT1827@brightrain.aerifal.cx> (raw)
In-Reply-To: <CAASffouYkGz5q9oCJNigPnNURbqNwevAD5TzewKmrV+c9RQQDg@mail.gmail.com>
On Thu, Jul 10, 2025 at 09:01:57AM +1000, Stephen Von Takach wrote:
> We're using docker containers running on the same kernel using the same
> mount setup.
> Works on debian, does not work on alpine.
>
> The difference is at the libc interface.
Unless I'm missing something, musl and glibc are doing exactly the
same thing here. There is no userspace code for unlink; it's just a
syscall. You can compare the glibc code at:
https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/unlink.c;hb=glibc-2.41
with the musl code at:
https://git.musl-libc.org/cgit/musl/tree/src/unistd/unlink.c?id=v1.2.5
If you're seeing different behavior, something else is the cause. It's
almost surely what I said, a timing-dependent NFS bug.
Rich
next prev parent reply other threads:[~2025-07-10 0:03 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-06 6:25 [musl] unlink on NFS volume fails silently Stephen Von Takach
2025-07-07 18:26 ` Markus Wichmann
2025-07-08 1:08 ` Rich Felker
2025-07-09 3:59 ` [musl] " Stephen Von Takach
2025-07-09 18:41 ` Rich Felker
2025-07-09 23:01 ` [musl] " Stephen Von Takach
2025-07-10 0:03 ` Rich Felker [this message]
2025-07-10 4:58 ` Stephen Von Takach
2025-07-10 15:44 ` Rich Felker
2025-07-10 17:01 ` Nathan McSween
2025-07-10 17:11 ` Rich Felker
2025-07-10 21:25 ` Stephen Von Takach
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