Re: git: 643336549081 - main - If copy_file_range(2) fails with EXDEV, use fall-back.

Reply: Mateusz Guzik : "Re: git: 643336549081 - main - If copy_file_range(2) fails with EXDEV, use fall-back."
In reply to: Alexey Dokuchaev : "Re: git: 643336549081 - main - If copy_file_range(2) fails with EXDEV, use fall-back."
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From: Poul-Henning Kamp <phk_at_phk.freebsd.dk>
Date: Tue, 04 Apr 2023 10:15:07 UTC

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Alexey Dokuchaev writes:

> Okay, but did it leave an empty file, I wonder?

I didn't check, but it probably would, because cp(1) must have opened
and created the destination in order to call copy_file_range(2).

PS: I'll note that EXDEV is not a documented return value from
copy_file_range(2), and my surprise that cp(1) did not revert
to the fall-back, no matter why copy_file_range(2) failed.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.