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/* sockerror.c --- convert WinSock error number to string
Vince Del Vecchio <vdelvecc@spd.analog.com>
This file is part of GNU CVS.
GNU CVS is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details. */
#include <stdio.h>
#include <winsock.h>
struct err_strs {
char **strs;
int first;
int last;
};
static char *errs1[] = {
/* EINTR */ "Interrupted system call"
};
static char *errs2[] = {
/* EBADF */ "Bad file descriptor"
};
static char *errs3[] = {
/* EACCES */ "Permission denied",
/* EFAULT */ "Bad address"
};
static char *errs4[] = {
/* EINVAL */ "Invalid argument"
};
static char *errs5[] = {
/* EMFILE */ "Too many open files",
};
static char *errs6[] = {
/* EWOULDBLOCK */ "Resource temporarily unavailable",
/* EINPROGRESS */ "Operation now in progress",
/* EALREADY */ "Operation already in progress",
/* ENOTSOCK */ "Socket operation on non-socket",
/* EDESTADDRREQ */ "Destination address required",
/* EMSGSIZE */ "Message too long",
/* EPROTOTYPE */ "Protocol wrong type for socket",
/* ENOPROTOOPT */ "Protocol not available",
/* EPROTONOSUPPORT */ "Protocol not supported",
/* ESOCKTNOSUPPORT */ "Socket type not supported",
/* EOPNOTSUPP */ "Operation not supported on socket",
/* EPFNOSUPPORT */ "Protocol family not supported",
/* EAFNOSUPPORT */ "Address family not supported by protocol",
/* EADDRINUSE */ "Address already in use",
/* EADDRNOTAVAIL */ "Can't assign requested address",
/* ENETDOWN */ "Network is down",
/* ENETUNREACH */ "Network is unreachable",
/* ENETRESET */ "Network connection dropped on reset",
/* ECONNABORTED */ "Software caused connection abort",
/* ECONNRESET */ "Connection reset by peer",
/* ENOBUFS */ "No buffer space available",
/* EISCONN */ "Socket is already connected",
/* ENOTCONN */ "Socket is not connected",
/* ESHUTDOWN */ "Can't send after socket shutdown",
/* ETOOMANYREFS */ "Too many references: can't splice",
/* ETIMEDOUT */ "Connection timed out",
/* ECONNREFUSED */ "Connection refused",
/* ELOOP */ "Too many levels of symbolic links",
/* ENAMETOOLONG */ "File name too long",
/* EHOSTDOWN */ "Host is down",
/* EHOSTUNREACH */ "No route to host",
/* ENOTEMPTY */ "Directory not empty",
/* EPROCLIM */ "Too many processes",
/* EUSERS */ "Too many users",
/* EDQUOT */ "Disc quota exceeded",
/* ESTALE */ "Stale NFS file handle",
/* EREMOTE */ "Object is remote"
};
static char *errs7[] = {
/* SYSNOTREADY */ "Network subsystem unavailable",
/* VERNOTSUPPORTED */ "Requested WinSock version not supported",
/* NOTINITIALISED */ "WinSock was not initialized"
};
#ifdef WSAEDISCON
static char *errs8[] = {
/* EDISCON */ "Graceful shutdown in progress"
};
#endif
static char *errs9[] = {
/* HOST_NOT_FOUND */ "Unknown host",
/* TRY_AGAIN */ "Host name lookup failure",
/* NO_RECOVERY */ "Unknown server error",
/* NO_DATA */ "No address associated with name",
};
/* Some of these errors are defined in the winsock.h header file I have,
but not in the Winsock 1.1 spec. I include them some of them anyway,
where it is not too hard to avoid referencing the symbolic constant. */
static struct err_strs sock_errlist[] = {
{ errs1, WSAEINTR, WSAEINTR },
{ errs2, WSAEBADF, WSAEBADF },
{ errs3, WSAEACCES, WSAEFAULT },
{ errs4, WSAEINVAL, WSAEINVAL },
{ errs5, WSAEMFILE, WSAEMFILE },
{ errs6, WSAEWOULDBLOCK, WSAEHOSTUNREACH + 6 },
{ errs7, WSASYSNOTREADY, WSANOTINITIALISED },
#ifdef WSAEDISCON
{ errs8, WSAEDISCON, WSAEDISCON },
#endif
{ errs9, WSAHOST_NOT_FOUND, WSANO_DATA }
};
char *
sock_strerror (int errnum)
{
static char buf[40];
int i;
for (i = 0; i < (sizeof sock_errlist / sizeof *sock_errlist); i++)
{
if (errnum >= sock_errlist[i].first && errnum <= sock_errlist[i].last)
return sock_errlist[i].strs[errnum - sock_errlist[i].first];
}
sprintf(buf, "Unknown socket error: %d", errnum);
return buf;
}
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