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/* Copyright (C) 2002-2020 Free Software Foundation, Inc.
Contributed by Andy Vaught
This file is part of the GNU Fortran 95 runtime library (libgfortran).
Libgfortran 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.
Libgfortran 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 "io.h"
#include "unix.h"
#include "async.h"
#include <limits.h>
#if !HAVE_UNLINK_OPEN_FILE
#include <string.h>
#endif
typedef enum
{ CLOSE_INVALID = - 1, CLOSE_DELETE, CLOSE_KEEP, CLOSE_UNSPECIFIED }
close_status;
static const st_option status_opt[] = {
{"keep", CLOSE_KEEP},
{"delete", CLOSE_DELETE},
{NULL, 0}
};
extern void st_close (st_parameter_close *);
export_proto(st_close);
void
st_close (st_parameter_close *clp)
{
close_status status;
gfc_unit *u;
#if !HAVE_UNLINK_OPEN_FILE
char *path;
path = NULL;
#endif
library_start (&clp->common);
status = !(clp->common.flags & IOPARM_CLOSE_HAS_STATUS) ? CLOSE_UNSPECIFIED :
find_option (&clp->common, clp->status, clp->status_len,
status_opt, "Bad STATUS parameter in CLOSE statement");
if (status == CLOSE_INVALID)
{
library_end ();
return;
}
u = find_unit (clp->common.unit);
if (ASYNC_IO && u && u->au)
if (async_wait (&(clp->common), u->au))
{
library_end ();
return;
}
if ((clp->common.flags & IOPARM_LIBRETURN_MASK) != IOPARM_LIBRETURN_OK)
{
library_end ();
return;
}
if (u != NULL)
{
if (close_share (u) < 0)
generate_error (&clp->common, LIBERROR_OS, "Problem in CLOSE");
if (u->flags.status == STATUS_SCRATCH)
{
if (status == CLOSE_KEEP)
generate_error (&clp->common, LIBERROR_BAD_OPTION,
"Can't KEEP a scratch file on CLOSE");
#if !HAVE_UNLINK_OPEN_FILE
path = strdup (u->filename);
#endif
}
else
{
if (status == CLOSE_DELETE)
{
if (u->flags.readonly)
generate_warning (&clp->common, "STATUS set to DELETE on CLOSE"
" but file protected by READONLY specifier");
else
{
#if HAVE_UNLINK_OPEN_FILE
if (remove (u->filename))
generate_error (&clp->common, LIBERROR_OS,
"File cannot be deleted");
#else
path = strdup (u->filename);
#endif
}
}
}
close_unit (u);
#if !HAVE_UNLINK_OPEN_FILE
if (path != NULL)
{
if (remove (path))
generate_error (&clp->common, LIBERROR_OS,
"File cannot be deleted");
free (path);
}
#endif
}
/* CLOSE on unconnected unit is legal and a no-op: F95 std., 9.3.5. */
library_end ();
}
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