135 lines
3.2 KiB
C
135 lines
3.2 KiB
C
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/* Copyright (C) 2002-2022 Free Software Foundation, Inc.
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Contributed by Andy Vaught
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "io.h"
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#include "unix.h"
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#include "async.h"
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#include <limits.h>
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#if !HAVE_UNLINK_OPEN_FILE
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#include <string.h>
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#endif
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typedef enum
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{ CLOSE_INVALID = - 1, CLOSE_DELETE, CLOSE_KEEP, CLOSE_UNSPECIFIED }
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close_status;
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static const st_option status_opt[] = {
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{"keep", CLOSE_KEEP},
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{"delete", CLOSE_DELETE},
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{NULL, 0}
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};
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extern void st_close (st_parameter_close *);
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export_proto(st_close);
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void
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st_close (st_parameter_close *clp)
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{
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close_status status;
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gfc_unit *u;
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#if !HAVE_UNLINK_OPEN_FILE
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char *path;
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path = NULL;
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#endif
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library_start (&clp->common);
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status = !(clp->common.flags & IOPARM_CLOSE_HAS_STATUS) ? CLOSE_UNSPECIFIED :
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find_option (&clp->common, clp->status, clp->status_len,
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status_opt, "Bad STATUS parameter in CLOSE statement");
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if (status == CLOSE_INVALID)
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{
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library_end ();
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return;
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}
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u = find_unit (clp->common.unit);
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if (ASYNC_IO && u && u->au)
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if (async_wait (&(clp->common), u->au))
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{
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library_end ();
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return;
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}
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if ((clp->common.flags & IOPARM_LIBRETURN_MASK) != IOPARM_LIBRETURN_OK)
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{
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library_end ();
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return;
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}
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if (u != NULL)
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{
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if (close_share (u) < 0)
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generate_error (&clp->common, LIBERROR_OS, "Problem in CLOSE");
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if (u->flags.status == STATUS_SCRATCH)
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{
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if (status == CLOSE_KEEP)
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generate_error (&clp->common, LIBERROR_BAD_OPTION,
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"Can't KEEP a scratch file on CLOSE");
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#if !HAVE_UNLINK_OPEN_FILE
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path = strdup (u->filename);
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#endif
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}
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else
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{
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if (status == CLOSE_DELETE)
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{
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if (u->flags.readonly)
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generate_warning (&clp->common, "STATUS set to DELETE on CLOSE"
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" but file protected by READONLY specifier");
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else
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{
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#if HAVE_UNLINK_OPEN_FILE
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if (remove (u->filename))
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generate_error (&clp->common, LIBERROR_OS,
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"File cannot be deleted");
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#else
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path = strdup (u->filename);
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#endif
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}
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}
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}
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close_unit (u);
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#if !HAVE_UNLINK_OPEN_FILE
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if (path != NULL)
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{
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if (remove (path))
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generate_error (&clp->common, LIBERROR_OS,
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"File cannot be deleted");
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free (path);
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}
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#endif
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}
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/* CLOSE on unconnected unit is legal and a no-op: F95 std., 9.3.5. */
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library_end ();
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}
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