Files
lix/lix/libstore/lock.hh
T
eldritch horrorsandjade b0d7a81613 fix tooling after include reorganization
clangd broke because it can't look through symlinks. compile_commands
manipulation does not fix it, clangd configuration does not fix it, a
vfs overlay does not fix it, and while a combination of those can fix
it with a bind mount in place that's just too cursed to even consider

clangd bug: https://github.com/llvm/llvm-project/issues/116877

Change-Id: I8e3e8489548eb3a7aa65ac9d12a5ec8abf814aec
2024-11-19 22:55:32 +00:00

45 lines
776 B
C++

#pragma once
///@file
#include <memory>
#include <sys/types.h>
#include <vector>
namespace nix {
struct UserLock
{
virtual ~UserLock() { }
/**
* Get the first and last UID.
*/
std::pair<uid_t, uid_t> getUIDRange()
{
auto first = getUID();
return {first, first + getUIDCount() - 1};
}
/**
* Get the first UID.
*/
virtual uid_t getUID() = 0;
virtual uid_t getUIDCount() = 0;
virtual gid_t getGID() = 0;
virtual std::vector<gid_t> getSupplementaryGIDs() = 0;
};
/**
* Acquire a user lock for a UID range of size `nrIds`. Note that this
* may return nullptr if no user is available.
*/
std::unique_ptr<UserLock> acquireUserLock(uid_t nrIds, bool useUserNamespace);
bool useBuildUsers();
}