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/* ErrnoCatogory.cc categorizes values of errno maps onto ChanConsts.h.
Copyright (C) 2008-2022 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
This file is part of GNU Modula-2.
GNU Modula-2 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Modula-2 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
General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "ChanConsts.h"
#if defined(HAVE_ERRNO_H)
#include "errno.h"
#endif
#if defined(HAVE_SYS_ERRNO_H)
#include "sys/errno.h"
#endif
#include "m2rts.h"
#define EXPORT(FUNC) m2iso ## _ErrnoCategory_ ## FUNC
#define M2EXPORT(FUNC) m2iso ## _M2_ErrnoCategory_ ## FUNC
#define M2LIBNAME "m2iso"
#if !defined(FALSE)
#define FALSE (1 == 0)
#endif
#if !defined(TRUE)
#define TRUE (1 == 1)
#endif
/* IsErrnoHard - returns TRUE if the value of errno is associated
with a hard device error. */
extern "C" int
EXPORT(IsErrnoHard) (int e)
{
#if defined(HAVE_ERRNO_H) || defined(HAVE_SYS_ERRNO_H)
return ((e == EPERM) || (e == ENOENT) || (e == EIO) || (e == ENXIO)
|| (e == EACCES) || (e == ENOTBLK) || (e == ENODEV) || (e == EINVAL)
|| (e == ENFILE) || (e == EROFS) || (e == EMLINK));
#else
return FALSE;
#endif
}
/* IsErrnoSoft - returns TRUE if the value of errno is associated
with a soft device error. */
extern "C" int
EXPORT(IsErrnoSoft) (int e)
{
#if defined(HAVE_ERRNO_H) || defined(HAVE_SYS_ERRNO_H)
return ((e == ESRCH) || (e == EINTR) || (e == E2BIG) || (e == ENOEXEC)
|| (e == EBADF) || (e == ECHILD) || (e == EAGAIN) || (e == ENOMEM)
|| (e == EFAULT) || (e == EBUSY) || (e == EEXIST) || (e == EXDEV)
|| (e == ENOTDIR) || (e == EISDIR) || (e == EMFILE) || (e == ENOTTY)
|| (e == ETXTBSY) || (e == EFBIG) || (e == ENOSPC) || (e == EPIPE));
#else
return FALSE;
#endif
}
extern "C" int
EXPORT(UnAvailable) (int e)
{
#if defined(HAVE_ERRNO_H) || defined(HAVE_SYS_ERRNO_H)
return ((e == ENOENT) || (e == ESRCH) || (e == ENXIO) || (e == ECHILD)
|| (e == ENOTBLK) || (e == ENODEV) || (e == ENOTDIR));
#else
return FALSE;
#endif
}
/* GetOpenResults - maps errno onto the ISO Modula-2 enumerated type,
OpenResults. */
extern "C" openResults
EXPORT(GetOpenResults) (int e)
{
if (e == 0)
return opened;
#if defined(HAVE_ERRNO_H) || defined(HAVE_SYS_ERRNO_H)
switch (e)
{
case EPERM:
return wrongPermissions;
break;
case ENOENT:
return noSuchFile;
break;
case ENXIO:
return noSuchFile;
break;
case EACCES:
return wrongPermissions;
break;
case ENOTBLK:
return wrongFileType;
break;
case EEXIST:
return fileExists;
break;
case ENODEV:
return noSuchFile;
break;
case ENOTDIR:
return wrongFileType;
break;
case EISDIR:
return wrongFileType;
break;
case EINVAL:
return wrongFlags;
break;
case ENFILE:
return tooManyOpen;
break;
case EMFILE:
return tooManyOpen;
break;
case ENOTTY:
return wrongFileType;
break;
case ENOSPC:
return noRoomOnDevice;
break;
case EROFS:
return wrongPermissions;
break;
default:
return otherProblem;
}
#else
return otherProblem;
#endif
}
/* GNU Modula-2 linking fodder. */
extern "C" void
M2EXPORT(init) (int, char **, char **)
{
}
extern "C" void
M2EXPORT(fini) (int, char **, char **)
{
}
extern "C" void
M2EXPORT(dep) (void)
{
}
extern "C" void __attribute__((__constructor__))
M2EXPORT(ctor) (void)
{
m2iso_M2RTS_RegisterModule ("ErrnoCategory", M2LIBNAME,
M2EXPORT(init), M2EXPORT(fini),
M2EXPORT(dep));
}
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