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/*
* This source code is released into the public domain.
*/
module;
#include <expected>
#include <string>
#include "nihil.hh"
#ifdef NIHIL_HAVE_FEXECVE
export module nihil.posix:fexecv;
import nihil.error;
import :argv;
import :executor;
import :fd;
namespace nihil {
/*
* fexecv: use a file descriptor and an argument vector to call ::fexecve().
* This is the lowest-level executor which all others are implemented
* in terms of (if it's available).
*
* TODO: Should have a way to pass the environment (envp).
*/
export struct fexecv final {
using tag = exec_tag;
fexecv(fd &&execfd, argv &&args) noexcept;
[[nodiscard]] auto exec(this fexecv &self)
-> std::expected<void, error>;
// Movable
fexecv(fexecv &&) noexcept;
auto operator=(this fexecv &, fexecv &&) noexcept -> fexecv&;
// Not copyable (because we hold the open fd object)
fexecv(fexecv const &) = delete;
auto operator=(this fexecv &, fexecv const &) -> fexecv& = delete;
private:
fd m_execfd;
argv m_args;
};
} // namespace nihil
#endif // NIHIL_HAVE_FEXECVE
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