Error Number

https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/errno.h.html

Copyright

Copyright (c) 2025 TNX Software Ltd. All rights reserved. Licensed under the terms of the QuantumRT Kernel License. the LICENSE file in the root of this package for details.

Defines

E2BIG (0)

Argument list too long.

EACCES (1)

Permission denied.

EADDRINUSE (2)

Address in use.

EADDRNOTAVAIL (3)

Address not available.

EAFNOSUPPORT (4)

Address family not supported.

EAGAIN (5)

Resource unavailable, try again (may be the same value as [EWOULDBLOCK]).

EALREADY (6)

Connection already in progress.

EBADF (7)

Bad file descriptor.

EBADMSG (8)

Bad message.

EBUSY (9)

Device or resource busy.

ECANCELED (10)

Operation canceled.

ECHILD (11)

No child processes.

ECONNABORTED (12)

Connection aborted.

ECONNREFUSED (13)

Connection refused.

ECONNRESET (14)

Connection reset.

EDEADLK (15)

Resource deadlock would occur.

EDESTADDRREQ (16)

Destination address required.

EDOM (17)

Mathematics argument out of domain of function.

EDQUOT (18)

Reserved.

EEXIST (19)

File exists.

EFAULT (20)

Bad address.

EFBIG (21)

File too large.

EHOSTUNREACH (22)

Host is unreachable.

EIDRM (23)

Identifier removed.

EILSEQ (24)

Illegal byte sequence.

EINPROGRESS (25)

Operation in progress.

EINTR (26)

Interrupted function.

EINVAL (27)

Invalid argument.

EIO (28)

I/O error.

EISCONN (29)

Socket is connected.

EISDIR (30)

Is a directory.

ELOOP (31)

Too many levels of symbolic links.

EMFILE (32)

File descriptor value too large.

Too many hard links.

EMSGSIZE (34)

Message too large.

EMULTIHOP (35)

Reserved.

ENAMETOOLONG (36)

Filename too long.

ENETDOWN (37)

Network is down.

ENETRESET (38)

Connection aborted by network.

ENETUNREACH (39)

Network unreachable.

ENFILE (40)

Too many files open in system.

ENOBUFS (41)

No buffer space available.

ENODEV (42)

No such device.

ENOENT (43)

No such file or directory.

ENOEXEC (44)

Executable file format error.

ENOLCK (45)

No locks available.

Reserved.

ENOMEM (47)

Not enough space.

ENOMSG (48)

No message of the desired type.

ENOPROTOOPT (49)

Protocol not available.

ENOSPC (50)

No space left on device.

ENOSYS (51)

Functionality not supported.

ENOTCONN (52)

The socket is not connected.

ENOTDIR (53)

Not a directory or a symbolic link to a directory.

ENOTEMPTY (54)

Directory not empty.

ENOTRECOVERABLE (55)

State not recoverable.

ENOTSOCK (56)

Not a socket.

ENOTSUP (57)

Not supported (may be the same value as [EOPNOTSUPP]).

ENOTTY (58)

Inappropriate I/O control operation.

ENXIO (59)

No such device or address.

EOPNOTSUPP (60)

Operation not supported on socket (may be the same value as [ENOTSUP]).

EOVERFLOW (61)

Value too large to be stored in data type.

EOWNERDEAD (62)

Previous owner died.

EPERM (63)

Operation not permitted.

EPIPE (64)

Broken pipe.

EPROTO (65)

Protocol error.

EPROTONOSUPPORT (66)

Protocol not supported.

EPROTOTYPE (67)

Protocol wrong type for socket.

ERANGE (68)

Result too large.

EROFS (69)

Read-only file system.

ESOCKTNOSUPPORT (70)

Socket type not supported.

ESPIPE (71)

Invalid seek.

ESRCH (72)

No such process.

ESTALE (73)

Reserved.

ETIMEDOUT (74)

Connection timed out.

ETXTBSY (75)

Text file busy.

EWOULDBLOCK (76)

Operation would block (may be the same value as [EAGAIN]).

EXDEV (77)

Improper hard link.

errno (*__errno_location())

Get pointer to errno variable.

Functions

int *__errno_location(void)