ERRNO.H(7) Miscellaneous Information Manual ERRNO.H(7)

errno.h — system error numbers

#include <errno.h>

The <errno.h> header provides a declaration for errno and gives non-zero values for the following symbolic constants. Their values are unique except as noted below:

Argument list too long.
Permission denied.
Address in use.
Address not available.
Address family not supported.
Resource unavailable, try again (may be the same value as EWOULDBLOCK).
Connection already in progress.
Bad file descriptor.
Bad message.
Device or resource busy.
Operation canceled.
No child processes.
Connection aborted.
Connection refused.
Connection reset.
Resource deadlock would occur.
Destination address required.
Mathematics argument out of domain of function.
Reserved.
File exists.
Bad address.
File too large.
Host is unreachable.
Identifier removed.
Illegal byte sequence.
Operation in progress.
Interrupted function.
Invalid argument.
I/O error.
Socket is connected.
Is a directory.
Too many levels of symbolic links.
Too many open files.
Too many links.
Message too large.
Reserved.
Filename too long.
Network is down.
Network unreachable.
Too many files open in system.
No buffer space available.
No message is available on the STREAM head read queue.
No such device.
No such file or directory.
Executable file format error.
No locks available.
Reserved.
Not enough space.
No message of the desired type.
Protocol not available.
No space left on device.
No STREAM resources.
Not a STREAM.
Function not supported.
The socket is not connected.
Not a directory.
Directory not empty.
Not a socket.
Not supported.
Inappropriate I/O control operation.
No such device or address.
Operation not supported on socket.
Value too large to be stored in data type.
Operation not permitted.
Broken pipe.
Protocol error.
Protocol not supported.
Socket type not supported.
Result too large.
Read-only file system.
Invalid seek.
No such process.
Reserved.
Stream ioctl(3) timeout.
Connection timed out.
Text file busy.
Operation would block (may be the same value as [EAGAIN]).
Cross-device link.

Additional error numbers may be defined on XSI-conformant systems. See Additional Error Numbers .

None.

errors .

February 1997 posix.fail