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edf0624bb2
(dlerror): Don't use last_object_name. (_dl_error_run): Omit second argument to _dl_catch_error.
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/* dlerror -- Return error detail for failing <dlfcn.h> functions.
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Copyright (C) 1995, 1996, 1998 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 not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, 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 last_errcode;
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static char *last_errstring;
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char *
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dlerror (void)
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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 (! last_errstring)
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return NULL;
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if (last_errcode == 0)
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buf = last_errstring;
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else
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{
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if (asprintf (&buf, "%s: %s",
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last_errstring, strerror (last_errcode)) == -1)
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buf = NULL;
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/* We don't need the error string anymore. */
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free (last_errstring);
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}
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/* Reset the error indicator. */
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last_errstring = NULL;
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return buf;
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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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if (last_errstring != NULL)
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/* Free the error string from the last failed command. This can
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happen if `dlerror' was not run after an error was found. */
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free (last_errstring);
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last_errcode = _dl_catch_error (&last_errstring, operate);
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return last_errstring != NULL;
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}
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