contrib/bind-9.2.4rc7/lib/isc/unix/errno2result.c

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 2000-2002  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: errno2result.c,v 1.8.2.5 2004/03/09 06:12:09 marka Exp $ */
  19
  20 #include <config.h>
  21
  22 #include <isc/result.h>
  23 #include <isc/strerror.h>
  24 #include <isc/util.h>
  25
  26 #include "errno2result.h"
  27
  28 /*
  29  * Convert a POSIX errno value into an isc_result_t.  The
  30  * list of supported errno values is not complete; new users
  31  * of this function should add any expected errors that are
  32  * not already there.
  33  */
  34 isc_result_t
  35 isc__errno2result(int posixerrno) {
  36         char strbuf[ISC_STRERRORSIZE];
  37
  38         switch (posixerrno) {
  39         case ENOTDIR:
  40         case ELOOP:
  41         case EINVAL:            /* XXX sometimes this is not for files */
  42         case ENAMETOOLONG:
  43         case EBADF:
  44                 return (ISC_R_INVALIDFILE);
  45         case ENOENT:
  46                 return (ISC_R_FILENOTFOUND);
  47         case EACCES:
  48         case EPERM:
  49                 return (ISC_R_NOPERM);
  50         case EEXIST:
  51                 return (ISC_R_FILEEXISTS);
  52         case EIO:
  53                 return (ISC_R_IOERROR);
  54         case ENOMEM:
  55                 return (ISC_R_NOMEMORY);
  56         case ENFILE:
  57         case EMFILE:
  58                 return (ISC_R_TOOMANYOPENFILES);
  59         case EPIPE:
  60 #ifdef ECONNRESET
  61         case ECONNRESET:
  62 #endif
  63 #ifdef ECONNABORTED
  64         case ECONNABORTED:
  65 #endif
  66                 return (ISC_R_CONNECTIONRESET);
  67 #ifdef ENOTCONN
  68         case ENOTCONN:
  69                 return (ISC_R_NOTCONNECTED);
  70 #endif
  71 #ifdef ETIMEDOUT
  72         case ETIMEDOUT:
  73                 return (ISC_R_TIMEDOUT);
  74 #endif
  75 #ifdef ENOBUFS
  76         case ENOBUFS:
  77                 return (ISC_R_NORESOURCES);
  78 #endif
  79 #ifdef EAFNOSUPPORT
  80         case EAFNOSUPPORT:
  81                 return (ISC_R_FAMILYNOSUPPORT);
  82 #endif
  83 #ifdef ENETDOWN
  84         case ENETDOWN:
  85                 return (ISC_R_NETDOWN);
  86 #endif
  87 #ifdef EHOSTDOWN
  88         case EHOSTDOWN:
  89                 return (ISC_R_HOSTDOWN);
  90 #endif
  91 #ifdef ENETUNREACH
  92         case ENETUNREACH:
  93                 return (ISC_R_NETUNREACH);
  94 #endif
  95 #ifdef EHOSTUNREACH
  96         case EHOSTUNREACH:
  97                 return (ISC_R_HOSTUNREACH);
  98 #endif
  99 #ifdef EADDRINUSE
 100         case EADDRINUSE:
 101                 return (ISC_R_ADDRINUSE);
 102 #endif
 103         case EADDRNOTAVAIL:
 104                 return (ISC_R_ADDRNOTAVAIL);
 105         case ECONNREFUSED:
 106                 return (ISC_R_CONNREFUSED);
 107         default:
 108                 isc__strerror(posixerrno, strbuf, sizeof(strbuf));
 109                 UNEXPECTED_ERROR(__FILE__, __LINE__,
 110                                  "unable to convert errno "
 111                                  "to isc_result: %d: %s",
 112                                  posixerrno, strbuf);
 113                 /*
 114                  * XXXDCL would be nice if perhaps this function could
 115                  * return the system's error string, so the caller
 116                  * might have something more descriptive than "unexpected
 117                  * error" to log with.
 118                  */
 119                 return (ISC_R_UNEXPECTED);
 120         }
 121 }