gl/strerror.c

   1 /* strerror.c --- POSIX compatible system error routine
   2
   3    Copyright (C) 2007-2010 Free Software Foundation, Inc.
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program 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
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #include <config.h>
  19
  20 #include <string.h>
  21
  22 #if REPLACE_STRERROR
  23
  24 # include <errno.h>
  25 # include <stdio.h>
  26
  27 # if GNULIB_defined_ESOCK /* native Windows platforms */
  28 #  if HAVE_WINSOCK2_H
  29 #   include <winsock2.h>
  30 #  endif
  31 # endif
  32
  33 # include "intprops.h"
  34
  35 /* Use the system functions, not the gnulib overrides in this file.  */
  36 # undef sprintf
  37
  38 # undef strerror
  39 # if ! HAVE_DECL_STRERROR
  40 #  define strerror(n) NULL
  41 # endif
  42
  43 char *
  44 rpl_strerror (int n)
  45 {
  46   char const *msg = NULL;
  47   /* These error messages are taken from glibc/sysdeps/gnu/errlist.c.  */
  48   switch (n)
  49     {
  50 # if GNULIB_defined_ETXTBSY
  51     case ETXTBSY:
  52       msg = "Text file busy";
  53       break;
  54 # endif
  55
  56 # if GNULIB_defined_ESOCK /* native Windows platforms */
  57     /* EWOULDBLOCK is the same as EAGAIN.  */
  58     case EINPROGRESS:
  59       msg = "Operation now in progress";
  60       break;
  61     case EALREADY:
  62       msg = "Operation already in progress";
  63       break;
  64     case ENOTSOCK:
  65       msg = "Socket operation on non-socket";
  66       break;
  67     case EDESTADDRREQ:
  68       msg = "Destination address required";
  69       break;
  70     case EMSGSIZE:
  71       msg = "Message too long";
  72       break;
  73     case EPROTOTYPE:
  74       msg = "Protocol wrong type for socket";
  75       break;
  76     case ENOPROTOOPT:
  77       msg = "Protocol not available";
  78       break;
  79     case EPROTONOSUPPORT:
  80       msg = "Protocol not supported";
  81       break;
  82     case ESOCKTNOSUPPORT:
  83       msg = "Socket type not supported";
  84       break;
  85     case EOPNOTSUPP:
  86       msg = "Operation not supported";
  87       break;
  88     case EPFNOSUPPORT:
  89       msg = "Protocol family not supported";
  90       break;
  91     case EAFNOSUPPORT:
  92       msg = "Address family not supported by protocol";
  93       break;
  94     case EADDRINUSE:
  95       msg = "Address already in use";
  96       break;
  97     case EADDRNOTAVAIL:
  98       msg = "Cannot assign requested address";
  99       break;
 100     case ENETDOWN:
 101       msg = "Network is down";
 102       break;
 103     case ENETUNREACH:
 104       msg = "Network is unreachable";
 105       break;
 106     case ENETRESET:
 107       msg = "Network dropped connection on reset";
 108       break;
 109     case ECONNABORTED:
 110       msg = "Software caused connection abort";
 111       break;
 112     case ECONNRESET:
 113       msg = "Connection reset by peer";
 114       break;
 115     case ENOBUFS:
 116       msg = "No buffer space available";
 117       break;
 118     case EISCONN:
 119       msg = "Transport endpoint is already connected";
 120       break;
 121     case ENOTCONN:
 122       msg = "Transport endpoint is not connected";
 123       break;
 124     case ESHUTDOWN:
 125       msg = "Cannot send after transport endpoint shutdown";
 126       break;
 127     case ETOOMANYREFS:
 128       msg = "Too many references: cannot splice";
 129       break;
 130     case ETIMEDOUT:
 131       msg = "Connection timed out";
 132       break;
 133     case ECONNREFUSED:
 134       msg = "Connection refused";
 135       break;
 136     case ELOOP:
 137       msg = "Too many levels of symbolic links";
 138       break;
 139     case EHOSTDOWN:
 140       msg = "Host is down";
 141       break;
 142     case EHOSTUNREACH:
 143       msg = "No route to host";
 144       break;
 145     case EPROCLIM:
 146       msg = "Too many processes";
 147       break;
 148     case EUSERS:
 149       msg = "Too many users";
 150       break;
 151     case EDQUOT:
 152       msg = "Disk quota exceeded";
 153       break;
 154     case ESTALE:
 155       msg = "Stale NFS file handle";
 156       break;
 157     case EREMOTE:
 158       msg = "Object is remote";
 159       break;
 160 #  if HAVE_WINSOCK2_H
 161     /* WSA_INVALID_HANDLE maps to EBADF */
 162     /* WSA_NOT_ENOUGH_MEMORY maps to ENOMEM */
 163     /* WSA_INVALID_PARAMETER maps to EINVAL */
 164     case WSA_OPERATION_ABORTED:
 165       msg = "Overlapped operation aborted";
 166       break;
 167     case WSA_IO_INCOMPLETE:
 168       msg = "Overlapped I/O event object not in signaled state";
 169       break;
 170     case WSA_IO_PENDING:
 171       msg = "Overlapped operations will complete later";
 172       break;
 173     /* WSAEINTR maps to EINTR */
 174     /* WSAEBADF maps to EBADF */
 175     /* WSAEACCES maps to EACCES */
 176     /* WSAEFAULT maps to EFAULT */
 177     /* WSAEINVAL maps to EINVAL */
 178     /* WSAEMFILE maps to EMFILE */
 179     /* WSAEWOULDBLOCK maps to EWOULDBLOCK */
 180     /* WSAEINPROGRESS is EINPROGRESS */
 181     /* WSAEALREADY is EALREADY */
 182     /* WSAENOTSOCK is ENOTSOCK */
 183     /* WSAEDESTADDRREQ is EDESTADDRREQ */
 184     /* WSAEMSGSIZE is EMSGSIZE */
 185     /* WSAEPROTOTYPE is EPROTOTYPE */
 186     /* WSAENOPROTOOPT is ENOPROTOOPT */
 187     /* WSAEPROTONOSUPPORT is EPROTONOSUPPORT */
 188     /* WSAESOCKTNOSUPPORT is ESOCKTNOSUPPORT */
 189     /* WSAEOPNOTSUPP is EOPNOTSUPP */
 190     /* WSAEPFNOSUPPORT is EPFNOSUPPORT */
 191     /* WSAEAFNOSUPPORT is EAFNOSUPPORT */
 192     /* WSAEADDRINUSE is EADDRINUSE */
 193     /* WSAEADDRNOTAVAIL is EADDRNOTAVAIL */
 194     /* WSAENETDOWN is ENETDOWN */
 195     /* WSAENETUNREACH is ENETUNREACH */
 196     /* WSAENETRESET is ENETRESET */
 197     /* WSAECONNABORTED is ECONNABORTED */
 198     /* WSAECONNRESET is ECONNRESET */
 199     /* WSAENOBUFS is ENOBUFS */
 200     /* WSAEISCONN is EISCONN */
 201     /* WSAENOTCONN is ENOTCONN */
 202     /* WSAESHUTDOWN is ESHUTDOWN */
 203     /* WSAETOOMANYREFS is ETOOMANYREFS */
 204     /* WSAETIMEDOUT is ETIMEDOUT */
 205     /* WSAECONNREFUSED is ECONNREFUSED */
 206     /* WSAELOOP is ELOOP */
 207     /* WSAENAMETOOLONG maps to ENAMETOOLONG */
 208     /* WSAEHOSTDOWN is EHOSTDOWN */
 209     /* WSAEHOSTUNREACH is EHOSTUNREACH */
 210     /* WSAENOTEMPTY maps to ENOTEMPTY */
 211     /* WSAEPROCLIM is EPROCLIM */
 212     /* WSAEUSERS is EUSERS */
 213     /* WSAEDQUOT is EDQUOT */
 214     /* WSAESTALE is ESTALE */
 215     /* WSAEREMOTE is EREMOTE */
 216     case WSASYSNOTREADY:
 217       msg = "Network subsystem is unavailable";
 218       break;
 219     case WSAVERNOTSUPPORTED:
 220       msg = "Winsock.dll version out of range";
 221       break;
 222     case WSANOTINITIALISED:
 223       msg = "Successful WSAStartup not yet performed";
 224       break;
 225     case WSAEDISCON:
 226       msg = "Graceful shutdown in progress";
 227       break;
 228     case WSAENOMORE: case WSA_E_NO_MORE:
 229       msg = "No more results";
 230       break;
 231     case WSAECANCELLED: case WSA_E_CANCELLED:
 232       msg = "Call was canceled";
 233       break;
 234     case WSAEINVALIDPROCTABLE:
 235       msg = "Procedure call table is invalid";
 236       break;
 237     case WSAEINVALIDPROVIDER:
 238       msg = "Service provider is invalid";
 239       break;
 240     case WSAEPROVIDERFAILEDINIT:
 241       msg = "Service provider failed to initialize";
 242       break;
 243     case WSASYSCALLFAILURE:
 244       msg = "System call failure";
 245       break;
 246     case WSASERVICE_NOT_FOUND:
 247       msg = "Service not found";
 248       break;
 249     case WSATYPE_NOT_FOUND:
 250       msg = "Class type not found";
 251       break;
 252     case WSAEREFUSED:
 253       msg = "Database query was refused";
 254       break;
 255     case WSAHOST_NOT_FOUND:
 256       msg = "Host not found";
 257       break;
 258     case WSATRY_AGAIN:
 259       msg = "Nonauthoritative host not found";
 260       break;
 261     case WSANO_RECOVERY:
 262       msg = "Nonrecoverable error";
 263       break;
 264     case WSANO_DATA:
 265       msg = "Valid name, no data record of requested type";
 266       break;
 267     /* WSA_QOS_* omitted */
 268 #  endif
 269 # endif
 270
 271 # if GNULIB_defined_ENOMSG
 272     case ENOMSG:
 273       msg = "No message of desired type";
 274       break;
 275 # endif
 276
 277 # if GNULIB_defined_EIDRM
 278     case EIDRM:
 279       msg = "Identifier removed";
 280       break;
 281 # endif
 282
 283 # if GNULIB_defined_ENOLINK
 284     case ENOLINK:
 285       msg = "Link has been severed";
 286       break;
 287 # endif
 288
 289 # if GNULIB_defined_EPROTO
 290     case EPROTO:
 291       msg = "Protocol error";
 292       break;
 293 # endif
 294
 295 # if GNULIB_defined_EMULTIHOP
 296     case EMULTIHOP:
 297       msg = "Multihop attempted";
 298       break;
 299 # endif
 300
 301 # if GNULIB_defined_EBADMSG
 302     case EBADMSG:
 303       msg = "Bad message";
 304       break;
 305 # endif
 306
 307 # if GNULIB_defined_EOVERFLOW
 308     case EOVERFLOW:
 309       msg = "Value too large for defined data type";
 310       break;
 311 # endif
 312
 313 # if GNULIB_defined_ENOTSUP
 314     case ENOTSUP:
 315       msg = "Not supported";
 316       break;
 317 # endif
 318
 319 # if GNULIB_defined_ESTALE
 320     case ESTALE:
 321       msg = "Stale NFS file handle";
 322       break;
 323 # endif
 324
 325 # if GNULIB_defined_ECANCELED
 326     case ECANCELED:
 327       msg = "Operation canceled";
 328       break;
 329 # endif
 330     }
 331
 332   if (msg)
 333     return (char *) msg;
 334
 335   {
 336     char *result = strerror (n);
 337
 338     if (result == NULL || result[0] == '\0')
 339       {
 340         static char const fmt[] = "Unknown error (%d)";
 341         static char msg_buf[sizeof fmt + INT_STRLEN_BOUND (n)];
 342         sprintf (msg_buf, fmt, n);
 343         return msg_buf;
 344       }
 345
 346     return result;
 347   }
 348 }
 349
 350 #endif