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//
// Copyright 2019 Staysail Systems, Inc. <info@staysail.tech>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include "core/nng_impl.h"
#ifdef NNG_PLATFORM_POSIX
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void
nni_plat_abort(void)
{
abort();
}
void
nni_plat_printf(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
(void) vprintf(fmt, ap);
va_end(ap);
}
const char *
nni_plat_strerror(int errnum)
{
if (errnum > NNG_ESYSERR) {
errnum -= NNG_ESYSERR;
}
return (strerror(errnum));
}
// There are of course other errors than these, but these are the ones
// that we might reasonably expect and want to handle "cleanly". Most of
// the others should be handled by the system error code. Note that EFAULT
// is very special, because if the error code is *that*, then we should panic
// because an invalid system call has been made. (That would be a sign
// of a serious software bug, in other words.) POSIX says that all these
// error codes should exist, and be distinct positive numbers. (EWOULDBLOCK
// and EAGAIN are permitted to have the same value.)
static struct {
int posix_err;
int nng_err;
} nni_plat_errnos[] = {
// clang-format off
{ EINTR, NNG_EINTR },
{ EINVAL, NNG_EINVAL },
{ ENOMEM, NNG_ENOMEM },
{ EACCES, NNG_EPERM },
{ EADDRINUSE, NNG_EADDRINUSE },
{ EADDRNOTAVAIL, NNG_EADDRINVAL },
{ EAFNOSUPPORT, NNG_ENOTSUP },
{ EAGAIN, NNG_EAGAIN },
{ EBADF, NNG_ECLOSED },
{ EBUSY, NNG_EBUSY },
{ ECONNABORTED, NNG_ECONNABORTED },
{ ECONNREFUSED, NNG_ECONNREFUSED },
{ ECONNRESET, NNG_ECONNRESET },
{ EHOSTUNREACH, NNG_EUNREACHABLE },
{ ENETUNREACH, NNG_EUNREACHABLE },
{ ENAMETOOLONG, NNG_EINVAL },
{ ENOENT, NNG_ENOENT },
{ ENOBUFS, NNG_ENOMEM },
{ ENOPROTOOPT, NNG_ENOTSUP },
{ ENOSYS, NNG_ENOTSUP },
{ ENOTSUP, NNG_ENOTSUP },
{ EPERM, NNG_EPERM },
{ EPIPE, NNG_ECLOSED },
{ EPROTO, NNG_EPROTO },
{ EPROTONOSUPPORT, NNG_ENOTSUP },
#ifdef ETIME // Found in STREAMs, not present on all systems.
{ ETIME, NNG_ETIMEDOUT },
#endif
{ ETIMEDOUT, NNG_ETIMEDOUT },
{ EWOULDBLOCK, NNG_EAGAIN },
{ ENOSPC, NNG_ENOSPC },
{ EFBIG, NNG_ENOSPC },
{ EDQUOT, NNG_ENOSPC },
{ ENFILE, NNG_ENOFILES },
{ EMFILE, NNG_ENOFILES },
{ EEXIST, NNG_EEXIST },
// must be last
{ 0, 0 },
// clang-format on
};
int
nni_plat_errno(int errnum)
{
int i;
if (errnum == 0) {
return (0);
}
if (errnum == EFAULT) {
nni_panic("System EFAULT encountered!");
}
for (i = 0; nni_plat_errnos[i].nng_err != 0; i++) {
if (errnum == nni_plat_errnos[i].posix_err) {
return (nni_plat_errnos[i].nng_err);
}
}
// Other system errno.
return (NNG_ESYSERR + errnum);
}
#endif // NNG_PLATFORM_POSIX
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