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<errno.h>(P) POSIX Programmer's Manual <errno.h>(P)
NAME
errno.h - system error numbers
SYNOPSIS
#include <errno.h>
DESCRIPTION
Some of the functionality described on this reference page extends the
ISO C standard. Any conflict between the requirements described here
and the ISO C standard is unintentional. This volume of
IEEE Std 1003.1-2001 defers to the ISO C standard.
The ISO C standard only requires the symbols [EDOM], [EILSEQ], and
[ERANGE] to be defined.
The <errno.h> header shall provide a declaration for errno and give
positive values for the following symbolic constants. Their values
shall be unique except as noted below.
E2BIG Argument list too long.
EACCES Permission denied.
EADDRINUSE
Address in use.
EADDRNOTAVAIL
Address not available.
EAFNOSUPPORT
Address family not supported.
EAGAIN Resource unavailable, try again (may be the same value as
[EWOULDBLOCK]).
EALREADY
Connection already in progress.
EBADF Bad file descriptor.
EBADMSG
Bad message.
EBUSY Device or resource busy.
ECANCELED
Operation canceled.
ECHILD No child processes.
ECONNABORTED
Connection aborted.
ECONNREFUSED
Connection refused.
ECONNRESET
Connection reset.
EDEADLK
Resource deadlock would occur.
EDESTADDRREQ
Destination address required.
EDOM Mathematics argument out of domain of function.
EDQUOT Reserved.
EEXIST File exists.
EFAULT Bad address.
EFBIG File too large.
EHOSTUNREACH
Host is unreachable.
EIDRM Identifier removed.
EILSEQ Illegal byte sequence.
EINPROGRESS
Operation in progress.
EINTR Interrupted function.
EINVAL Invalid argument.
EIO I/O error.
EISCONN
Socket is connected.
EISDIR Is a directory.
ELOOP Too many levels of symbolic links.
EMFILE Too many open files.
EMLINK Too many links.
EMSGSIZE
Message too large.
EMULTIHOP
Reserved.
ENAMETOOLONG
Filename too long.
ENETDOWN
Network is down.
ENETRESET
Connection aborted by network.
ENETUNREACH
Network unreachable.
ENFILE Too many files open in system.
ENOBUFS
No buffer space available.
ENODATA
No message is available on the STREAM head read queue.
ENODEV No such device.
ENOENT No such file or directory.
ENOEXEC
Executable file format error.
ENOLCK No locks available.
ENOLINK
Reserved.
ENOMEM Not enough space.
ENOMSG No message of the desired type.
ENOPROTOOPT
Protocol not available.
ENOSPC No space left on device.
ENOSR No STREAM resources.
ENOSTR Not a STREAM.
ENOSYS Function not supported.
ENOTCONN
The socket is not connected.
ENOTDIR
Not a directory.
ENOTEMPTY
Directory not empty.
ENOTSOCK
Not a socket.
ENOTSUP
Not supported.
ENOTTY Inappropriate I/O control operation.
ENXIO No such device or address.
EOPNOTSUPP
Operation not supported on socket.
EOVERFLOW
Value too large to be stored in data type.
EPERM Operation not permitted.
EPIPE Broken pipe.
EPROTO Protocol error.
EPROTONOSUPPORT
Protocol not supported.
EPROTOTYPE
Protocol wrong type for socket.
ERANGE Result too large.
EROFS Read-only file system.
ESPIPE Invalid seek.
ESRCH No such process.
ESTALE Reserved.
ETIME Stream ioctl() timeout.
ETIMEDOUT
Connection timed out.
ETXTBSY
Text file busy.
EWOULDBLOCK
Operation would block (may be the same value as [EAGAIN]).
EXDEV Cross-device link.
The following sections are informative.
APPLICATION USAGE
Additional error numbers may be defined on conforming systems; see the
System Interfaces volume of IEEE Std 1003.1-2001.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
The System Interfaces volume of IEEE Std 1003.1-2001, Section 2.3,
Error Numbers
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online
at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 <errno.h>(P)
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This page was generated on Sat Sep 8 16:41:15 GMT 2007
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