cpukit/libdl/rtl-error.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup rtl
0007  *
0008  * @brief RTEMS Run-Time Linker Error
0009  */
0010
0011 /*
0012  *  COPYRIGHT (c) 2012-2018 Chris Johns <chrisj@rtems.org>
0013  *
0014  * Redistribution and use in source and binary forms, with or without
0015  * modification, are permitted provided that the following conditions
0016  * are met:
0017  * 1. Redistributions of source code must retain the above copyright
0018  *    notice, this list of conditions and the following disclaimer.
0019  * 2. Redistributions in binary form must reproduce the above copyright
0020  *    notice, this list of conditions and the following disclaimer in the
0021  *    documentation and/or other materials provided with the distribution.
0022  *
0023  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0024  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0025  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0026  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0027  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0028  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0029  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0030  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0031  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0032  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0033  * POSSIBILITY OF SUCH DAMAGE.
0034  */
0035
0036 #ifdef HAVE_CONFIG_H
0037 #include "config.h"
0038 #endif
0039
0040 #include <errno.h>
0041 #include <stdio.h>
0042 #include <string.h>
0043 #include <stdarg.h>
0044
0045 #include <rtems/rtl/rtl.h>
0046 #include "rtl-error.h"
0047
0048 void
0049 rtems_rtl_set_error (int error, const char* format, ...)
0050 {
0051   rtems_rtl_data* rtl = rtems_rtl_lock ();
0052   va_list         ap;
0053   va_start (ap, format);
0054   rtl->last_errno = error;
0055   vsnprintf (rtl->last_error, sizeof (rtl->last_error), format, ap);
0056   rtems_rtl_unlock ();
0057   va_end (ap);
0058 }
0059
0060 int
0061 rtems_rtl_get_error (char* message, size_t max_message)
0062 {
0063   rtems_rtl_data* rtl = rtems_rtl_lock ();
0064   if (rtl != NULL)
0065   {
0066     int last_errno = rtl->last_errno;
0067     rtl->last_errno = 0;
0068     strlcpy (message, rtl->last_error, max_message);
0069     rtems_rtl_unlock ();
0070     return last_errno;
0071   }
0072
0073   strncpy(message, "RTL init error", max_message);
0074
0075   return EIO;
0076 }