65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
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/* dlerror -- Return error detail for failing <dlfcn.h> functions.
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Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <link.h>
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#include <dlfcn.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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static int _dl_last_errcode;
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static const char *_dl_last_errstring;
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char *
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dlerror (void)
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{
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char *ret;
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if (! _dl_last_errstring)
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return NULL;
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if (_dl_last_errcode)
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{
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static char *buf;
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if (buf)
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{
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free (buf);
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buf = NULL;
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}
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if (asprintf (&buf, "%s: %s",
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_dl_last_errstring, strerror (_dl_last_errcode)) == -1)
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return NULL;
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else
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ret = buf;
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}
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else
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ret = (char *) _dl_last_errstring;
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/* Reset the error indicator. */
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_dl_last_errstring = NULL;
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return ret;
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}
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int
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_dlerror_run (void (*operate) (void))
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{
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_dl_last_errcode = _dl_catch_error (&_dl_last_errstring, operate);
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return _dl_last_errstring != NULL;
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}
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