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/* code-from-errno.c - Mapping errnos to error codes.
Copyright (C) 2003 g10 Code GmbH
This file is part of libgpg-error.
libgpg-error is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License
as published by the Free Software Foundation; either version 2.1 of
the License, or (at your option) any later version.
libgpg-error is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with libgpg-error; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <errno.h>
#ifdef HAVE_W32_SYSTEM
#include <winsock2.h>
#endif
#include <gpg-error.h>
#include "code-from-errno.h"
#ifdef HAVE_W32_SYSTEM
/* Under Windows socket related error codes are defined in a different
file and prefixed with "WSA". As their ranges don't overlap, we map
some of them to our usual error codes. */
gpg_err_code_t
w32_special_errnos (int err)
{
switch (err)
{
case WSAEADDRINUSE: return GPG_ERR_EADDRINUSE;
case WSAEADDRNOTAVAIL: return GPG_ERR_EADDRNOTAVAIL;
case WSAECONNABORTED: return GPG_ERR_ECONNABORTED;
case WSAECONNREFUSED: return GPG_ERR_ECONNREFUSED;
case WSAECONNRESET: return GPG_ERR_ECONNRESET;
case WSAENAMETOOLONG: return GPG_ERR_ENAMETOOLONG;
case WSAEHOSTDOWN: return GPG_ERR_EHOSTDOWN;
case WSAEHOSTUNREACH: return GPG_ERR_EHOSTUNREACH;
default:
return GPG_ERR_UNKNOWN_ERRNO;
}
}
#endif /*HAVE_W32_SYSTEM*/
/* Retrieve the error code for the system error ERR. This returns
GPG_ERR_UNKNOWN_ERRNO if the system error is not mapped (report
this). */
gpg_err_code_t
gpg_err_code_from_errno (int err)
{
int idx;
if (!err)
return GPG_ERR_NO_ERROR;
idx = errno_to_idx (err);
if (idx < 0)
{
#ifdef HAVE_W32_SYSTEM
return w32_special_errnos (err);
#else
return GPG_ERR_UNKNOWN_ERRNO;
#endif
}
return GPG_ERR_SYSTEM_ERROR | err_code_from_index[idx];
}
/* Retrieve the error code directly from the ERRNO variable. This
returns GPG_ERR_UNKNOWN_ERRNO if the system error is not mapped
(report this) and GPG_ERR_MISSING_ERRNO if ERRNO has the value 0. */
gpg_err_code_t
gpg_err_code_from_syserror (void)
{
int err = errno;
int idx;
if (!err)
return GPG_ERR_MISSING_ERRNO;
idx = errno_to_idx (err);
if (idx < 0)
{
#ifdef HAVE_W32_SYSTEM
return w32_special_errnos (err);
#else
return GPG_ERR_UNKNOWN_ERRNO;
#endif
}
return GPG_ERR_SYSTEM_ERROR | err_code_from_index[idx];
}
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