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43 lines
1 KiB
C++
43 lines
1 KiB
C++
#pragma once
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#include "source-accessor.hh"
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namespace nix {
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/**
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* A source accessor that uses the Unix filesystem.
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*/
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struct PosixSourceAccessor : virtual SourceAccessor
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{
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/**
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* The most recent mtime seen by lstat(). This is a hack to
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* support dumpPathAndGetMtime(). Should remove this eventually.
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*/
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time_t mtime = 0;
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void readFile(
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const CanonPath & path,
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Sink & sink,
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std::function<void(uint64_t)> sizeCallback) override;
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bool pathExists(const CanonPath & path) override;
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std::optional<Stat> maybeLstat(const CanonPath & path) override;
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DirEntries readDirectory(const CanonPath & path) override;
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std::string readLink(const CanonPath & path) override;
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std::optional<CanonPath> getPhysicalPath(const CanonPath & path) override;
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private:
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/**
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* Throw an error if `path` or any of its ancestors are symlinks.
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*/
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void assertNoSymlinks(CanonPath path);
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std::optional<struct stat> cachedLstat(const CanonPath & path);
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};
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}
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