mirror of
https://github.com/NixOS/nix
synced 2025-06-24 22:11:15 +02:00
8433027e35
At this point many features are stripped out, but this works:
- Can run libnix{util,store,expr} unit tests
- Can run some Nix commands
Co-Authored-By volth <volth@volth.com>
Co-Authored-By Brian McKenna <brian@brianmckenna.org>
45 lines
781 B
C++
45 lines
781 B
C++
#pragma once
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///@file
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#include "types.hh"
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#include <optional>
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#include <sys/types.h>
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namespace nix {
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struct UserLock
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{
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virtual ~UserLock() { }
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/**
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* Get the first and last UID.
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*/
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std::pair<uid_t, uid_t> getUIDRange()
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{
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auto first = getUID();
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return {first, first + getUIDCount() - 1};
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}
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/**
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* Get the first UID.
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*/
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virtual uid_t getUID() = 0;
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virtual uid_t getUIDCount() = 0;
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virtual gid_t getGID() = 0;
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virtual std::vector<gid_t> getSupplementaryGIDs() = 0;
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};
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/**
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* Acquire a user lock for a UID range of size `nrIds`. Note that this
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* may return nullptr if no user is available.
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*/
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std::unique_ptr<UserLock> acquireUserLock(uid_t nrIds, bool useUserNamespace);
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bool useBuildUsers();
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}
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