14.13 errno -- Standard errno system symbols 
This module makes available standard errno system symbols.
The value of each symbol is the corresponding integer value.
The names and descriptions are borrowed from linux/include/errno.h ,
which should be pretty all-inclusive.
errorcode 
  Dictionary providing a mapping from the errno value to the string
  name in the underlying system.  For instance,
  errno.errorcode[errno.EPERM] maps to 'EPERM'.
 
To translate a numeric error code to an error message, use
os.strerror() .
Of the following list, symbols that are not used on the current
platform are not defined by the module.  The specific list of defined
symbols is available as errno.errorcode.keys().  Symbols
available can include:
EPERM  Operation not permitted  ENOENT  No such file or directory  ESRCH  No such process  EINTR  Interrupted system call  EIO  I/O error  ENXIO  No such device or address  E2BIG  Arg list too long  ENOEXEC  Exec format error  EBADF  Bad file number  ECHILD  No child processes  EAGAIN  Try again  ENOMEM  Out of memory  EACCES  Permission denied  EFAULT  Bad address  ENOTBLK  Block device required  EBUSY  Device or resource busy  EEXIST  File exists  EXDEV  Cross-device link  ENODEV  No such device  ENOTDIR  Not a directory  EISDIR  Is a directory  EINVAL  Invalid argument  ENFILE  File table overflow  EMFILE  Too many open files  ENOTTY  Not a typewriter  ETXTBSY  Text file busy  EFBIG  File too large  ENOSPC  No space left on device  ESPIPE  Illegal seek  EROFS  Read-only file system  EMLINK  Too many links  EPIPE  Broken pipe  EDOM  Math argument out of domain of func  ERANGE  Math result not representable  EDEADLK  Resource deadlock would occur  ENAMETOOLONG  File name too long  ENOLCK  No record locks available  ENOSYS  Function not implemented  ENOTEMPTY  Directory not empty  ELOOP  Too many symbolic links encountered  EWOULDBLOCK  Operation would block  ENOMSG  No message of desired type  EIDRM  Identifier removed  ECHRNG  Channel number out of range  EL2NSYNC  Level 2 not synchronized  EL3HLT  Level 3 halted  EL3RST  Level 3 reset  ELNRNG  Link number out of range  EUNATCH  Protocol driver not attached  ENOCSI  No CSI structure available  EL2HLT  Level 2 halted  EBADE  Invalid exchange  EBADR  Invalid request descriptor  EXFULL  Exchange full  ENOANO  No anode  EBADRQC  Invalid request code  EBADSLT  Invalid slot  EDEADLOCK  File locking deadlock error  EBFONT  Bad font file format  ENOSTR  Device not a stream  ENODATA  No data available  ETIME  Timer expired  ENOSR  Out of streams resources  ENONET  Machine is not on the network  ENOPKG  Package not installed  EREMOTE  Object is remote  ENOLINK  Link has been severed  EADV  Advertise error  ESRMNT  Srmount error  ECOMM  Communication error on send  EPROTO  Protocol error  EMULTIHOP  Multihop attempted  EDOTDOT  RFS specific error  EBADMSG  Not a data message  EOVERFLOW  Value too large for defined data type  ENOTUNIQ  Name not unique on network  EBADFD  File descriptor in bad state  EREMCHG  Remote address changed  ELIBACC  Can not access a needed shared library  ELIBBAD  Accessing a corrupted shared library  ELIBSCN  .lib section in a.out corrupted  ELIBMAX  Attempting to link in too many shared libraries  ELIBEXEC  Cannot exec a shared library directly  EILSEQ  Illegal byte sequence  ERESTART  Interrupted system call should be restarted  ESTRPIPE  Streams pipe error  EUSERS  Too many users  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 transport endpoint  EPFNOSUPPORT  Protocol family not supported  EAFNOSUPPORT  Address family not supported by protocol  EADDRINUSE  Address already in use  EADDRNOTAVAIL  Cannot assign requested address  ENETDOWN  Network is down  ENETUNREACH  Network is unreachable  ENETRESET  Network dropped connection because of reset  ECONNABORTED  Software caused connection abort  ECONNRESET  Connection reset by peer  ENOBUFS  No buffer space available  EISCONN  Transport endpoint is already connected  ENOTCONN  Transport endpoint is not connected  ESHUTDOWN  Cannot send after transport endpoint shutdown  ETOOMANYREFS  Too many references: cannot splice  ETIMEDOUT  Connection timed out  ECONNREFUSED  Connection refused  EHOSTDOWN  Host is down  EHOSTUNREACH  No route to host  EALREADY  Operation already in progress  EINPROGRESS  Operation now in progress  ESTALE  Stale NFS file handle  EUCLEAN  Structure needs cleaning  ENOTNAM  Not a XENIX named type file  ENAVAIL  No XENIX semaphores available  EISNAM  Is a named type file  EREMOTEIO  Remote I/O error  EDQUOT  Quota exceeded  
Release 2.5, documentation updated on 19th September, 2006. 
 
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