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Message-ID: <aBrbmVUDHQS38gAc@voyager>
Date: Wed, 7 May 2025 06:03:37 +0200
From: Markus Wichmann <nullplan@....net>
To: musl@...ts.openwall.com
Cc: "Zhao, Lihua (CN)" <Lihua.Zhao.CN@...driver.com>
Subject: Re: sigtimedwait always retry when receive -EINTR
Am Wed, May 07, 2025 at 03:03:15AM +0000 schrieb Zhao, Lihua (CN):
> sigtimedwait always retry when receive -EINTR, it conflicts with https://pubs.opengroup.org/onlinepubs/9799919799/
>
> [EINTR]
> The wait was interrupted by an unblocked, caught signal. It shall be documented in system documentation whether this error causes these functions to fail.
>
That's a "may fail". musl only implements "may fail" for really
compelling reasons.
> With above implementation, sigtimedwait will dead loop to wait expected signal.
>
The SYS_rt_sigtimedwait syscall will succeed if an expected (i.e.
specified in mask) signal arrives, not return -EINTR.
Ciao,
Markus
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