errno

Syntax

#include <errno.h>

extern int errno;

Description

This variable is used to hold the value of the error of the last function call. The value might be one of the following:

0

No Error

1

EDOM -- Input to function out of range

2

ERANGE -- Output of function out of range

3

E2BIG -- Argument list too long

4

EACCES -- Permission denied

5

EAGAIN -- Resource temporarily unavailable

6

EBADF -- Bad file descriptor

7

EBUSY -- Resource busy

8

ECHILD -- No child processes

9

EDEADLK -- Resource deadlock avoided

10

EEXIST -- File exists

11

EFAULT -- Bad address

12

EFBIG -- File too large

13

EINTR -- Interrupted system call

14

EINVAL -- Invalid argument

15

EIO -- Input or output

16

EISDIR -- Is a directory

17

EMFILE -- Too many open files

18

EMLINK -- Too many links

19

ENAMETOOLONG -- File name too long

20

ENFILE -- Too many open files in system

21

ENODEV -- No such device

22

ENOENT -- No such file or directory

23

ENOEXEC -- Unable to execute file

24

ENOLCK -- No locks available

25

ENOMEM -- Not enough memory

26

ENOSPC -- No space left on drive

27

ENOSYS -- Function not implemented

28

ENOTDIR -- Not a directory

29

ENOTEMPTY -- Directory not empty

30

ENOTTY -- Inappropriate I/O control operation

31

ENXIO -- No such device or address

32

EPERM -- Operation not permitted

33

EPIPE -- Broken pipe

34

EROFS -- Read-only file system

35

ESPIPE -- Invalid seek

36

ESRCH -- No such process

37

EXDEV -- Improper link

38

ENMFILE -- No more files

See section perror.

Portability

ANSI, POSIX

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