ccompat.cpp

/**
 * Copyright (C) 2020 Tristan. All Rights Reserved.
 * This file is licensed under the BSD 2-Clause license.
 * See the COPYING file for licensing information.
 */

#include "ccompat.hpp"

#include <string>
#include <vector>

#include <cerrno>
#include <cstdint>
#include <cstdio>

#include "logger.hpp"

extern const std::vector<const char *> errnoNames;

const char *
CCompat::GetErrnoName(int error) {
	if (error <= 0 || static_cast<uint32_t>(error) > errnoNames.size())
		error = errno;

	if (error <= 0)
		Logger::Crash(std::string(static_cast<const char *>(__PRETTY_FUNCTION__)), "Errno is negative");

	return errnoNames[error];
}

/**
 * When using valgrind with the --track-fds=yes option, it notices these
 * FILE's are still open. They will be closed by the OS after Valgrind and
 * this function is there to suppress that error message.
 */
void
CCompat::CloseStandardIO() {
	fclose(stderr);
	fclose(stdin);
	fclose(stdout);
}

const std::vector<const char *> errnoNames = {"CCOMPATNOERR", "EPERM", "ENOENT", "ESRCH", "EINTR", "EIO", "ENXIO",
	"E2BIG", "ENOEXEC", "EBADF", "ECHILD", "EAGAIN", "ENOMEM", "EACCES", "EFAULT", "ENOTBLK", "EBUSY", "EEXIST",
	"EXDEV", "ENODEV", "ENOTDIR", "EISDIR", "EINVAL", "ENFILE", "EMFILE", "ENOTTY", "ETXTBSY", "EFBIG", "ENOSPC",
	"ESPIPE", "EROFS", "EMLINK", "EPIPE", "EDOM", "ERANGE", "EDEADLK", "ENAMETOOLONG", "ENOLCK", "ENOSYS", "ENOTEMPTY",
	"ELOOP", "EWOULDBLOCK", "ENOMSG", "EIDRM", "ECHRNG", "EL2NSYNC", "EL3HLT", "EL3RST", "ELNRNG", "EUNATCH", "ENOCSI",
	"EL2HLT", "EBADE", "EBADR", "EXFULL", "ENOANO", "EBADRQC", "EBADSLT", "EDEADLOCK", "EBFONT", "ENOSTR", "ENODATA",
	"ETIME", "ENOSR", "ENONET", "ENOPKG", "EREMOTE", "ENOLINK", "EADV", "ESRMNT", "ECOMM", "EPROTO", "EMULTIHOP",
	"EDOTDOT", "EBADMSG", "EOVERFLOW", "ENOTUNIQ", "EBADFD", "EREMCHG", "ELIBACC", "ELIBBAD", "ELIBSCN", "ELIBMAX",
	"ELIBEXEC", "EILSEQ", "ERESTART", "ESTRPIPE", "EUSERS", "ENOTSOCK", "EDESTADDRREQ", "EMSGSIZE", "EPROTOTYPE",
	"ENOPROTOOPT", "EPROTONOSUPPORT", "ESOCKTNOSUPPORT", "EOPNOTSUPP", "EPFNOSUPPORT", "EAFNOSUPPORT", "EADDRINUSE",
	"EADDRNOTAVAIL", "ENETDOWN", "ENETUNREACH", "ENETRESET", "ECONNABORTED", "ECONNRESET", "ENOBUFS", "EISCONN",
	"ENOTCONN", "ESHUTDOWN", "ETOOMANYREFS", "ETIMEDOUT", "ECONNREFUSED", "EHOSTDOWN", "EHOSTUNREACH", "EALREADY",
	"EINPROGRESS", "ESTALE", "EUCLEAN", "ENOTNAM", "ENAVAIL", "EISNAM", "EREMOTEIO", "EDQUOT", "ENOMEDIUM",
	"EMEDIUMTYPE", "ECANCELED", "ENOKEY", "EKEYEXPIRED", "EKEYREVOKED", "EKEYREJECTED", "EOWNERDEAD", "ENOTRECOVERABLE",
	"ERFKILL", "EHWPOISON", "ENOTSUP"};