strerror : convert error number to string

Synopsis

#include <string.h>
char *strerror(int errnum);
```### Description

strerror converts the error number errnum into a string. The value of errnum is usually a copy of errno. If errnum is not a known error number, the result points to an empty string.

This implementation of strerror prints out the following strings for each of the values defined in `errno.h':

E2BIG Arg list too long

EACCES Permission denied

EADV Advertise error

EAGAIN No more processes

EBADF Bad file number

EBADMSG Bad message

EBUSY Device or resource busy

ECHILD No children

ECOMM Communication error

EDEADLK Deadlock

EEXIST File exists

EDOM Math argument

EFAULT Bad address

EFBIG File too large

EIDRM Identifier removed

EINTR Interrupted system call

EINVAL Invalid argument

EIO I/O error

EISDIR Is a directory

ELIBACC Cannot access a needed shared library

ELIBBAD Accessing a corrupted shared library

ELIBEXEC Cannot exec a shared library directly

ELIBMAX Attempting to link in more shared libraries than system limit

ELIBSCN .lib section in a.out corrupted

EMFILE Too many open files

EMLINK Too many links

EMULTIHOP Multihop attempted

ENAMETOOLONG File or path name too long

ENFILE Too many open files in system

ENODEV No such device

ENOENT No such file or directory

ENOEXEC Exec format error

ENOLCK No lock

ENOLINK Virtual circuit is gone

ENOMEM Not enough space

ENOMSG No message of desired type

ENONET Machine is not on the network

ENOPKG No package

ENOSPC No space left on device

ENOSR No stream resources

ENOSTR Not a stream

ENOSYS Function not implemented

ENOTBLK Block device required

ENOTDIR Not a directory

ENOTEMPTY Directory not empty

ENOTTY Not a character device

ENXIO No such device or address

EPERM Not owner

EPIPE Broken pipe

EPROTO Protocol error

ERANGE Result too large

EREMOTE Resource is remote

EROFS Read-only file system

ESPIPE Illegal seek

ESRCH No such process

ESRMNT Srmount error

ETIME Stream ioctl timeout

ETXTBSY Text file busy

EXDEV Cross-device link### Returns

This function returns a pointer to a string. Your application must not modify that string.

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**Authoritative source**: BUSMASTER DITA help source `strerror.dita`, compiled into `BUSMASTER.CHM` with the application.