code.delx.au - pulseaudio/blob - src/pulsecore/core-error.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   6
   7   PulseAudio is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU Lesser General Public License as published
   9   by the Free Software Foundation; either version 2 of the License,
  10   or (at your option) any later version.
  11
  12   PulseAudio is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with PulseAudio; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  20   USA.
  21 ***/
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <errno.h>
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 #include <pulse/utf8.h>
  33 #include <pulse/xmalloc.h>
  34
  35 #include <pulsecore/core-util.h>
  36 #include <pulsecore/native-common.h>
  37 #include <pulsecore/thread.h>
  38 #include <pulsecore/macro.h>
  39 #include <pulsecore/log.h>
  40
  41 #include "core-error.h"
  42
  43 PA_STATIC_TLS_DECLARE(cstrerror, pa_xfree);
  44
  45 const char* pa_cstrerror(int errnum) {
  46     const char *original = NULL;
  47     char *translated, *t;
  48     char errbuf[128];
  49
  50     if (errnum < 0)
  51         errnum = -errnum;
  52
  53     if ((t = PA_STATIC_TLS_GET(cstrerror)))
  54         pa_xfree(t);
  55
  56 #if defined(HAVE_STRERROR_R) && defined(__GLIBC__)
  57     original = strerror_r(errnum, errbuf, sizeof(errbuf));
  58 #elif defined(HAVE_STRERROR_R)
  59     if (strerror_r(errnum, errbuf, sizeof(errbuf)) == 0) {
  60         errbuf[sizeof(errbuf) - 1] = 0;
  61         original = errbuf;
  62     }
  63 #else
  64     /* This might not be thread safe, but we hope for the best */
  65     original = strerror(errnum);
  66 #endif
  67
  68     if (!original) {
  69         pa_snprintf(errbuf, sizeof(errbuf), "Unknown error %i", errnum);
  70         original = errbuf;
  71     }
  72
  73     if (!(translated = pa_locale_to_utf8(original))) {
  74         pa_log_warn("Unable to convert error string to locale, filtering.");
  75         translated = pa_utf8_filter(original);
  76     }
  77
  78     PA_STATIC_TLS_SET(cstrerror, translated);
  79
  80     return translated;
  81 }