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  1. /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
  2.  * All rights reserved.
  3.  *
  4.  * Redistribution and use in source and binary forms, with or without
  5.  * modification, are permitted provided that the following conditions are met:
  6.  *
  7.  * Redistributions of source code must retain the above copyright notice, this
  8.  * list of conditions and the following disclaimer.
  9.  *
  10.  * Redistributions in binary form must reproduce the above copyright notice,
  11.  * this list of conditions and the following disclaimer in the documentation
  12.  * and/or other materials provided with the distribution.
  13.  *
  14.  * Neither the name of the original program's authors nor the names of its
  15.  * contributors may be used to endorse or promote products derived from this
  16.  * software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  19.  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21.  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  22.  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23.  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24.  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25.  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26.  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27.  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28.  * POSSIBILITY OF SUCH DAMAGE.
  29.  */
  30.  
  31. #include <stdio.h>
  32. #include <string.h>
  33. #include <stdlib.h>
  34. #include <unistd.h>
  35. #include <stdarg.h>
  36.  
  37. #include "config.h"
  38. #include "errors.h"
  39. #include "errstr.h"
  40.  
  41. volatile int cli_errno = CL_EOK;
  42. extern volatile unsigned int cli_quit;
  43.  
  44. /* Error printing, translation and handling functions */
  45.  
  46.  
  47. /* Look up errno in cl_errors and return the corresponding string.
  48.  * Return NULL if not found */
  49. static char *err2str(int err)
  50. {
  51.  
  52.     if (NULL != cl_errors[err])
  53.         return cl_errors[err];
  54.  
  55.     return (char *)NULL;
  56. }
  57.  
  58. /* Print an error report signifying errno, which is translated to
  59.  * its corresponding human readable string. If errno > 0, raise the
  60.  * cli_quit int that tells the main program loop to exit immediately */
  61.  
  62. void cli_error(int err, const char *fmt, ...)
  63. {
  64.     va_list vargs;
  65.     va_start(vargs, fmt);
  66.     vprintf(fmt, vargs);
  67.     va_end(vargs);
  68.  
  69.     if (NULL != err2str(err))
  70.         printf(" (%s)\n", err2str(err));
  71.     else
  72.         printf(" (Unknown Error %d)\n", err);
  73.  
  74.     /* If fatal, raise cli_quit so that we try to exit
  75.      * gracefully. This will break the main loop and
  76.      * invoke the destructor */
  77.     if (err == CL_EFATAL)
  78.         cli_quit = 1;
  79.  
  80.     return;
  81.  
  82. }
  83.  
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  88.