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SourceAccessor: Make lstat() virtual

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With FilteringSourceAccessor, lstat() needs to throw a different
exception if the path is inaccessible than if it doesn't exist.
This commit is contained in:
Eelco Dolstra 2025-09-22 22:43:12 +02:00 • committed by John Ericson
parent 46095284f1
commit 55c7ef9d40
5 changed files with 33 additions and 2 deletions
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2
src/libutil/include/nix/util/source-accessor.hh
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@ -121,7 +121,7 @@ struct SourceAccessor : std::enable_shared_from_this<SourceAccessor>
std::string typeString();
};
Stat lstat(const CanonPath & path);
virtual Stat lstat(const CanonPath & path);
virtual std::optional<Stat> maybeLstat(const CanonPath & path) = 0;

6
src/libutil/mounted-source-accessor.cc
View file

@ -27,6 +27,12 @@ struct MountedSourceAccessorImpl : MountedSourceAccessor
return accessor->readFile(subpath);
}
Stat lstat(const CanonPath & path) override
{
auto [accessor, subpath] = resolve(path);
return accessor->lstat(subpath);
}
std::optional<Stat> maybeLstat(const CanonPath & path) override
{
auto [accessor, subpath] = resolve(path);