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linkOrCopy: Fallback upon cross-device link error (EXDEV)

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Fix building derivations in local chroot store on OpenAFS,
where hard linking accross directories causes cross-device link error
(EXDEV).
This commit is contained in:
Yueh-Shun Li 2023-06-30 21:11:59 +08:00
parent a0c617348b
commit eebfe989a5
1 changed files with 2 additions and 1 deletions
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3
src/libstore/build/local-derivation-goal.cc
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@ -395,8 +395,9 @@ static void linkOrCopy(const Path & from, const Path & to)
bind-mount in this case?
It can also fail with EPERM in BeegFS v7 and earlier versions
or fail with EXDEV in OpenAFS
which don't allow hard-links to other directories */
if (errno != EMLINK && errno != EPERM)
if (errno != EMLINK && errno != EPERM && errno != EXDEV)
throw SysError("linking '%s' to '%s'", to, from);
copyPath(from, to);
}