external/bsd/bind/dist/lib/isc/unix/errno2result.c

   1 /*      $NetBSD: errno2result.c,v 1.5 2014/12/10 04:38:01 christos Exp $        */
   2
   3 /*
   4  * Copyright (C) 2004, 2005, 2007, 2011-2013  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 2000-2002  Internet Software Consortium.
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  13  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  16  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  17  * PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 /* Id */
  21
  22 /*! \file */
  23
  24 #include <config.h>
  25
  26 #include <isc/result.h>
  27 #include <isc/strerror.h>
  28 #include <isc/util.h>
  29
  30 #include "errno2result.h"
  31
  32 /*%
  33  * Convert a POSIX errno value into an isc_result_t.  The
  34  * list of supported errno values is not complete; new users
  35  * of this function should add any expected errors that are
  36  * not already there.
  37  */
  38 isc_result_t
  39 isc___errno2result(int posixerrno, const char *file, unsigned int line) {
  40         char strbuf[ISC_STRERRORSIZE];
  41
  42         switch (posixerrno) {
  43         case ENOTDIR:
  44         case ELOOP:
  45         case EINVAL:            /* XXX sometimes this is not for files */
  46         case ENAMETOOLONG:
  47         case EBADF:
  48                 return (ISC_R_INVALIDFILE);
  49         case ENOENT:
  50                 return (ISC_R_FILENOTFOUND);
  51         case EACCES:
  52         case EPERM:
  53                 return (ISC_R_NOPERM);
  54         case EEXIST:
  55                 return (ISC_R_FILEEXISTS);
  56         case EIO:
  57                 return (ISC_R_IOERROR);
  58         case ENOMEM:
  59                 return (ISC_R_NOMEMORY);
  60         case ENFILE:
  61         case EMFILE:
  62                 return (ISC_R_TOOMANYOPENFILES);
  63 #ifdef EOVERFLOW
  64         case EOVERFLOW:
  65                 return (ISC_R_RANGE);
  66 #endif
  67         case EPIPE:
  68 #ifdef ECONNRESET
  69         case ECONNRESET:
  70 #endif
  71 #ifdef ECONNABORTED
  72         case ECONNABORTED:
  73 #endif
  74                 return (ISC_R_CONNECTIONRESET);
  75 #ifdef ENOTCONN
  76         case ENOTCONN:
  77                 return (ISC_R_NOTCONNECTED);
  78 #endif
  79 #ifdef ETIMEDOUT
  80         case ETIMEDOUT:
  81                 return (ISC_R_TIMEDOUT);
  82 #endif
  83 #ifdef ENOBUFS
  84         case ENOBUFS:
  85                 return (ISC_R_NORESOURCES);
  86 #endif
  87 #ifdef EAFNOSUPPORT
  88         case EAFNOSUPPORT:
  89                 return (ISC_R_FAMILYNOSUPPORT);
  90 #endif
  91 #ifdef ENETDOWN
  92         case ENETDOWN:
  93                 return (ISC_R_NETDOWN);
  94 #endif
  95 #ifdef EHOSTDOWN
  96         case EHOSTDOWN:
  97                 return (ISC_R_HOSTDOWN);
  98 #endif
  99 #ifdef ENETUNREACH
 100         case ENETUNREACH:
 101                 return (ISC_R_NETUNREACH);
 102 #endif
 103 #ifdef EHOSTUNREACH
 104         case EHOSTUNREACH:
 105                 return (ISC_R_HOSTUNREACH);
 106 #endif
 107 #ifdef EADDRINUSE
 108         case EADDRINUSE:
 109                 return (ISC_R_ADDRINUSE);
 110 #endif
 111         case EADDRNOTAVAIL:
 112                 return (ISC_R_ADDRNOTAVAIL);
 113         case ECONNREFUSED:
 114                 return (ISC_R_CONNREFUSED);
 115         default:
 116                 isc__strerror(posixerrno, strbuf, sizeof(strbuf));
 117                 UNEXPECTED_ERROR(file, line, "unable to convert errno "
 118                                  "to isc_result: %d: %s",
 119                                  posixerrno, strbuf);
 120                 /*
 121                  * XXXDCL would be nice if perhaps this function could
 122                  * return the system's error string, so the caller
 123                  * might have something more descriptive than "unexpected
 124                  * error" to log with.
 125                  */
 126                 return (ISC_R_UNEXPECTED);
 127         }
 128 }