[DOC] Add known_errors documents

Incorporate from The Open Group.
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html

defs/known_errors.def

@@ -1,57 +1,57 @@
-E2BIG
+E2BIG           Argument list too long
-EACCES
+EACCES          Permission denied
-EADDRINUSE
+EADDRINUSE      Address in use
-EADDRNOTAVAIL
+EADDRNOTAVAIL   Address not available
 EADV
-EAFNOSUPPORT
+EAFNOSUPPORT    Address family not supported
-EAGAIN
+EAGAIN          Resource unavailable, try again (may be the same value as [EWOULDBLOCK])
-EALREADY
+EALREADY        Connection already in progress
 EAUTH
 EBADARCH
 EBADE
 EBADEXEC
-EBADF
+EBADF           Bad file descriptor
 EBADFD
 EBADMACHO
-EBADMSG
+EBADMSG         Bad message
 EBADR
 EBADRPC
 EBADRQC
 EBADSLT
 EBFONT
-EBUSY
+EBUSY           Device or resource busy
-ECANCELED
+ECANCELED       Operation canceled
 ECAPMODE
-ECHILD
+ECHILD          No child processes
 ECHRNG
 ECOMM
-ECONNABORTED
+ECONNABORTED    Connection aborted
-ECONNREFUSED
+ECONNREFUSED    Connection refused
-ECONNRESET
+ECONNRESET      Connection reset
-EDEADLK
+EDEADLK         Resource deadlock would occur
 EDEADLOCK
-EDESTADDRREQ
+EDESTADDRREQ    Destination address required
 EDEVERR
-EDOM
+EDOM            Mathematics argument out of domain of function
 EDOOFUS
 EDOTDOT
-EDQUOT
+EDQUOT          Reserved
-EEXIST
+EEXIST          File exists
-EFAULT
+EFAULT          Bad address
-EFBIG
+EFBIG           File too large
 EFTYPE
 EHOSTDOWN
-EHOSTUNREACH
+EHOSTUNREACH    Host is unreachable
 EHWPOISON
-EIDRM
+EIDRM           Identifier removed
-EILSEQ
+EILSEQ          Illegal byte sequence
-EINPROGRESS
+EINPROGRESS     Operation in progress
-EINTR
+EINTR           Interrupted function
-EINVAL
+EINVAL          Invalid argument
-EIO
+EIO             I/O error
 EIPSEC
-EISCONN
+EISCONN         Socket is connected
-EISDIR
+EISDIR          Is a directory
 EISNAM
 EKEYEXPIRED
 EKEYREJECTED
@@ -60,98 +60,98 @@ EL2HLT
 EL2NSYNC
 EL3HLT
 EL3RST
-ELAST
 ELIBACC
 ELIBBAD
 ELIBEXEC
 ELIBMAX
 ELIBSCN
 ELNRNG
-ELOOP
+ELOOP           Too many levels of symbolic links
 EMEDIUMTYPE
-EMFILE
+EMFILE          File descriptor value too large
-EMLINK
+EMLINK          Too many links
-EMSGSIZE
+EMSGSIZE        Message too large
-EMULTIHOP
+EMULTIHOP       Reserved
-ENAMETOOLONG
+ENAMETOOLONG    Filename too long
 ENAVAIL
 ENEEDAUTH
-ENETDOWN
+ENETDOWN        Network is down
-ENETRESET
+ENETRESET       Connection aborted by network
-ENETUNREACH
+ENETUNREACH     Network unreachable
-ENFILE
+ENFILE          Too many files open in system
 ENOANO
 ENOATTR
-ENOBUFS
+ENOBUFS         No buffer space available
 ENOCSI
-ENODATA
+ENODATA         [OB XSR] [Option Start] No message is available on the STREAM head read queue [Option End]
-ENODEV
+ENODEV          No such device
-ENOENT
+ENOENT          No such file or directory
-ENOEXEC
+ENOEXEC         Executable file format error
 ENOKEY
-ENOLCK
+ENOLCK          No locks available
-ENOLINK
+ENOLINK         Reserved
 ENOMEDIUM
-ENOMEM
+ENOMEM          Not enough space
-ENOMSG
+ENOMSG          No message of the desired type
 ENONET
 ENOPKG
 ENOPOLICY
-ENOPROTOOPT
+ENOPROTOOPT     Protocol not available
-ENOSPC
+ENOSPC          No space left on device
-ENOSR
+ENOSR           [OB XSR] [Option Start] No STREAM resources [Option End]
-ENOSTR
+ENOSTR          [OB XSR] [Option Start] Not a STREAM [Option End]
-ENOSYS
+ENOSYS          Functionality not supported
 ENOTBLK
 ENOTCAPABLE
-ENOTCONN
+ENOTCONN        The socket is not connected
-ENOTDIR
+ENOTDIR         Not a directory or a symbolic link to a directory
-ENOTEMPTY
+ENOTEMPTY       Directory not empty
 ENOTNAM
-ENOTRECOVERABLE
+ENOTRECOVERABLE State not recoverable
-ENOTSOCK
+ENOTSOCK        Not a socket
-ENOTSUP
+ENOTSUP         Not supported (may be the same value as [EOPNOTSUPP])
-ENOTTY
+ENOTTY          Inappropriate I/O control operation
 ENOTUNIQ
-ENXIO
+ENXIO           No such device or address
-EOPNOTSUPP
+EOPNOTSUPP      Operation not supported on socket (may be the same value as [ENOTSUP])
-EOVERFLOW
+EOVERFLOW       Value too large to be stored in data type
-EOWNERDEAD
+EOWNERDEAD      Previous owner died
-EPERM
+EPERM           Operation not permitted
 EPFNOSUPPORT
-EPIPE
+EPIPE           Broken pipe
 EPROCLIM
 EPROCUNAVAIL
 EPROGMISMATCH
 EPROGUNAVAIL
-EPROTO
+EPROTO          Protocol error
-EPROTONOSUPPORT
+EPROTONOSUPPORT Protocol not supported
-EPROTOTYPE
+EPROTOTYPE      Protocol wrong type for socket
 EPWROFF
 EQFULL
-ERANGE
+ERANGE          Result too large
 EREMCHG
 EREMOTE
 EREMOTEIO
 ERESTART
 ERFKILL
-EROFS
+EROFS           Read-only file system
 ERPCMISMATCH
 ESHLIBVERS
 ESHUTDOWN
 ESOCKTNOSUPPORT
-ESPIPE
+ESPIPE          Invalid seek
-ESRCH
+ESRCH           No such process
 ESRMNT
-ESTALE
+ESTALE          Reserved
 ESTRPIPE
-ETIME
+ETIME           [OB XSR] [Option Start] Stream ioctl() timeout [Option End]
-ETIMEDOUT
+ETIMEDOUT       Connection timed out
 ETOOMANYREFS
-ETXTBSY
+ETXTBSY         Text file busy
 EUCLEAN
 EUNATCH
 EUSERS
-EWOULDBLOCK
+EWOULDBLOCK     Operation would block (may be the same value as [EAGAIN])
-EXDEV
+EXDEV           Cross-device link
 EXFULL
+ELAST           Largest errno