nis/nis_error.c

   1 /* Copyright (c) 1997-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <syslog.h>
  21 #include <string.h>
  22 #include <libintl.h>
  23 #include <rpcsvc/nis.h>
  24
  25
  26 #define MF(line) MF1 (line)
  27 #define MF1(line) str##line
  28 static const union msgstr_t
  29 {
  30   struct
  31   {
  32 #define S(s) char MF(__LINE__)[sizeof (s)];
  33 #include "nis_error.h"
  34 #undef S
  35   };
  36   char str[0];
  37 } msgstr =
  38   {
  39     {
  40 #define S(s) s,
  41 #include "nis_error.h"
  42 #undef S
  43     }
  44   };
  45
  46 static const unsigned short int msgidx[] =
  47   {
  48 #define S(s) offsetof (union msgstr_t, MF (__LINE__)),
  49 #include "nis_error.h"
  50 #undef S
  51   };
  52
  53
  54 const char *
  55 nis_sperrno (const nis_error status)
  56 {
  57   if (status >= sizeof (msgidx) / sizeof (msgidx[0]))
  58     return "???";
  59   else
  60     return gettext (msgstr.str + msgidx[status]);
  61 }
  62 libnsl_hidden_def (nis_sperrno)
  63
  64 void
  65 nis_perror (const nis_error status, const char *label)
  66 {
  67   fprintf (stderr, "%s: %s\n", label, nis_sperrno (status));
  68 }
  69
  70 void
  71 nis_lerror (const nis_error status, const char *label)
  72 {
  73   syslog (LOG_ERR, "%s: %s", label, nis_sperrno (status));
  74 }
  75
  76 char *
  77 nis_sperror_r (const nis_error status, const char *label,
  78                char *buffer, size_t buflen)
  79 {
  80   if (snprintf (buffer, buflen, "%s: %s", label, nis_sperrno (status))
  81       >= buflen)
  82     {
  83       __set_errno (ERANGE);
  84       return NULL;
  85     }
  86
  87   return buffer;
  88 }
  89 libnsl_hidden_def (nis_sperror_r)
  90
  91 char *
  92 nis_sperror (const nis_error status, const char *label)
  93 {
  94   static char buffer[NIS_MAXNAMELEN + 1];
  95
  96   return nis_sperror_r (status, label, buffer, sizeof (buffer));
  97 }