Popular Errno Codes by Platform

Content

Popular Errno Codes by Platform

An identifier is defined for platforms that have a numeric value listed (even though there may not be an associated message shown). Column 2 is a score that indicates the fraction of platforms on which the identifier is found (1 meaning all).

  SUSv3   AIX 4.3,5.1   HP-UX 11.22   Solaris 9,10  
EPERM 1 0 Operation not permitted. 1 Operation not permitted 1 Not super-user 1
ENOENT 1 0 No such file or directory. 2 No such file or directory 2 No such file or directory 2
ESRCH 1 0 No such process. 3 No such process 3 No such process 3
EINTR 1 0 Interrupted function. 4 interrupted system call 4 interrupted system call 4
EIO 1 0 I/O error. 5 I/O error 5 I/O error 5
ENXIO 1 0 No such device or address. 6 No such device or address 6 No such device or address 6
E2BIG 1 0 Argument list too long. 7 Arg list too long 7 Arg list too long 7
ENOEXEC 1 0 Executable file format error. 8 Exec format error 8 Exec format error 8
EBADF 1 0 Bad file descriptor. 9 Bad file descriptor 9 Bad file number 9
ECHILD 1 0 No child processes. 10 No child processes 10 No children 10
EAGAIN 1 0 Resource unavailable, try again [3] 11 Resource temporarily unavailable 11 No more processes 11
ENOMEM 1 0 Not enough space. 12 Not enough space 12 Not enough core 12
EACCES 1 0 Permission denied. 13 Permission denied 13 Permission denied 13
EFAULT 1 0 Bad address. 14 Bad address 14 Bad address 14
ENOTBLK 0.9     15 Block device required 15 Block device required 15
EBUSY 1 0 Device or resource busy. 16 Resource busy 16 Mount device busy 16
EEXIST 1 0 File exists. 17 File exists 17 File exists 17
EXDEV 1 0 Cross-device link. 18 Improper link 18 Cross-device link 18
ENODEV 1 0 No such device. 19 No such device 19 No such device 19
ENOTDIR 1 0 Not a directory. 20 Not a directory 20 Not a directory 20
EISDIR 1 0 Is a directory. 21 Is a directory 21 Is a directory 21
EINVAL 1 0 Invalid argument. 22 Invalid argument 22 Invalid argument 22
ENFILE 1 0 Too many files open in system. 23 Too many open files in system 23 File table overflow 23
EMFILE 1 0 Too many open files. 24 Too many open files 24 Too many open files 24
ENOTTY 1 0 Inappropriate I/O control operation. 25 Inappropriate I/O control operation 25 Not a typewriter 25
ETXTBSY 1 0 Text file busy. 26 Text file busy 26 Text file busy 26
EFBIG 1 0 File too large. 27 File too large 27 File too large 27
ENOSPC 1 0 No space left on device. 28 No space left on device 28 No space left on device 28
ESPIPE 1 0 Invalid seek. 29 Invalid seek 29 Illegal seek 29
EROFS 1 0 Read-only file system. 30 Read only file system 30 Read only file system 30
EMLINK 1 0 Too many links. 31 Too many links 31 Too many links 31
EPIPE 1 0 Broken pipe. 32 Broken pipe 32 Broken pipe 32
EDOM 0.9 0 Mathematics argument out of domain of function. 33 Domain error within math function     33
ERANGE 0.9 0 Result too large. 34 Result too large     34
ENOMSG 0.9 0 No message of the desired type. 35 No message of desired type 35 No message of desired type 35
EIDRM 0.9 0 Identifier removed. 36 Identifier removed 36 Identifier removed 36
EDEADLK 1 0 Resource deadlock would occur. 45 Resource deadlock avoided 45 A deadlock would occur 45
ENOLCK 1 0 No locks available. 49 No locks available 46 System record lock table was full 46
ESTALE 0.9 0 Reserved. 52 no filesystem 70 Stale NFS file handle 151
EINPROGRESS 0.9 0 Operation in progress. 55 Operation now in progress 245 Operation now in progress 150
EALREADY 0.9 0 Connection already in progress. 56 Operation already in progress 244 Operation already in progress 149
ENOTSOCK 0.9 0 Not a socket. 57 Socket operation on non-socket 216 Socket operation on non-socket 95
EDESTADDRREQ 0.9 0 Destination address required. 58 Destination address required 217 Destination address required 96
EMSGSIZE 0.9 0 Message too large. 59 Message too long 218 Message too long 97
EPROTOTYPE 0.9 0 Protocol wrong type for socket. 60 Protocol wrong type for socket 219 Protocol wrong type for socket 98
ENOPROTOOPT 0.9 0 Protocol not available. 61 Protocol not available 220 Protocol not available 99
EPROTONOSUPPORT 0.9 0 Protocol not supported. 62 Protocol not supported 221 Protocol not supported 120
EOPNOTSUPP 0.9 0 Operation not supported on socket. 64 Operation not supported on socket 223 Operation not supported 122
EAFNOSUPPORT 0.9 0 Address family not supported. 66 Address family not supported by protocol family 225 Address family not supported by protocol family 124
EADDRINUSE 0.9 0 Address in use. 67 Address already in use 226 Address already in use 125
EADDRNOTAVAIL 0.9 0 Address not available. 68 Can't assign requested address 227 Can't assign requested address 126
ENETDOWN 0.9 0 Network is down. 69 Network is down 228 Network is down 127
ENETUNREACH 0.9 0 Network unreachable. 70 Network is unreachable 229 Network is unreachable 128
ENETRESET 0.9 0 Connection aborted by network. 71 Network dropped connection on reset 230 Network dropped connection on reset 129
ECONNABORTED 0.9 0 Connection aborted. 72 Software caused connection abort 231 Software caused connection abort 130
ECONNRESET 0.9 0 Connection reset. 73 Connection reset by peer 232 Connection reset by peer 131
ENOBUFS 0.9 0 No buffer space available. 74 No buffer space available 233 No buffer space available 132
EISCONN 0.9 0 Socket is connected. 75 Socket is already connected 234 Socket is already connected 133
ENOTCONN 0.9 0 The socket is not connected. 76 Socket is not connected 235 Socket is not connected 134
ETIMEDOUT 0.9 0 Connection timed out. 78 Connection timed out 238 Connection timed out 145
ECONNREFUSED 0.9 0 Connection refused. 79 Connection refused 239 Connection refused 146
EHOSTUNREACH 0.9 0 Host is unreachable. 81 No route to host 242 No route to host 148
ELOOP 0.9 0 Too many levels of symbolic links. 85 Too many levels of symbolic links 249 Too many levels of symbolic links 90
ENAMETOOLONG 1 0 Filename too long. 86 File name too long 248 File name too long 78
ENOTEMPTY 1 0 Directory not empty. 87 Directory not empty [1] 247 Directory not empty 93
ENOSYS 1 0 Function not supported. 109 Function not implemented POSIX 251 Function not implemented 89
EILSEQ 1 0 Illegal byte sequence. 116 Invalid wide character 47 Illegal byte sequence 88
EOVERFLOW 0.9 0 Value too large to be stored in data type. 127 value too large to be stored in data type 72 Value too large to be stored in data type 79
                 
  Linux 2.4.28,2.6.9 IRIX 6.5[4] OSF1 FreeBSD 5.2.1
EPERM Not super-user 1 Operation not permitted 1 Operation not permitted 1 Not owner 1
ENOENT No such file or directory 2 No such file or directory 2 No such file or directory 2 No such file or directory 2
ESRCH No such process 3 No such process 3 No such process 3 No such process 3
EINTR interrupted system call 4 Interrupted system call 4 Interrupted function call 4 Interrupted system call 4
EIO I/O error 5 I/O error 5 I/O error 5 I/O error 5
ENXIO No such device or address 6 No such device or address 6 No such device or address 6 No such device or address 6
E2BIG Arg list too long 7 Arg list too long 7 Arg list too long 7 Arg list too long 7
ENOEXEC Exec format error 8 Exec format error 8 Exec format error 8 Exec format error 8
EBADF Bad file number 9 Bad file number 9 Bad file number 9 Bad file number 9
ECHILD No children 10 No child processes 10 No child processes 10 No children 10
EAGAIN Resource temporarily unavailable 11 Try again 11 Resource temporarily unavailable 11 ditto 35
ENOMEM Not enough core 12 Out of memory 12 Not enough space 12 Not enough core 12
EACCES Permission denied 13 Permission denied 13 Permission denied 13 Permission denied 13
EFAULT Bad address 14 Bad address 14 Bad address 14 Bad address 14
ENOTBLK Block device required 15 Block device required 15 Block device required 15 Block device required 15
EBUSY Mount device busy 16 Device or resource busy 16 Resource busy 16 Mount device busy 16
EEXIST File exists 17 File exists 17 File exists 17 File exists 17
EXDEV Cross-device link 18 Cross-device link 18 Improper link 18 Cross-device link 18
ENODEV No such device 19 No such device 19 No such device 19 No such device 19
ENOTDIR Not a directory 20 Not a directory 20 Not a directory 20 Not a directory 20
EISDIR Is a directory 21 Is a directory 21 Is a directory 21 Is a directory 21
EINVAL Invalid argument 22 Invalid argument 22 Invalid argument 22 Invalid argument 22
ENFILE File table overflow 23 File table overflow 23 File table overflow 23 File table overflow 23
EMFILE Too many open files 24 Too many open files 24 Too many open files 24 Too many open files 24
ENOTTY Inappropriate ioctl for device 25 Not a typewriter 25 Inappropriate I/O control operation 25 Not a typewriter 25
ETXTBSY Text file busy 26 Text file busy 26 Text file busy 26 Text file busy 26
EFBIG File too large 27 File too large 27 File too large 27 File too large 27
ENOSPC No space left on device 28 No space left on device 28 No space left on device 28 No space left on device 28
ESPIPE Illegal seek 29 Illegal seek 29 Illegal seek 29 Illegal seek 29
EROFS Read only file system 30 Read-only file system 30 Read only file system 30 Read-only file system 30
EMLINK Too many links 31 Too many links 31 Too many links 31 Too many links 31
EPIPE Broken pipe 32 Broken pipe 32 Broken pipe 32 Broken pipe 32
EDOM Math arg out of domain of func 33 Math argument out of domain of func 33 Domain error 33 Argument too large 33
ERANGE Math result not representable 34 Math result not representable 34 Result too large 34 Result too large 34
ENOMSG No message of desired type 42 No message of desired type 35 No message of desired type 80 No msg matches receive request 83
EIDRM Identifier removed 43 Identifier removed 36 Identifier removed 81 Msg queue id has been removed 82
EDEADLK Deadlock condition. 35 Resource deadlock would occur 45 Resource deadlock avoided 11 Operation would cause deadlock 11
ENOLCK No record locks available. 37 No record locks available 46 No locks available 77 No locks available 77
ESTALE Stale NFS file handle 116 Stale NFS file handle 151 Stale NFS file handle 70 Stale NFS file handle 70
EINPROGRESS operation now in progress 115 Operation now in progress 150 operation now in progress 36 Operation now in progress 36
EALREADY operation already in progress 114 Operation already in progress 149 operation already in progress 37 Operation already in progress 37
ENOTSOCK Socket operation on non-socket 88 Socket operation on non-socket 95 Socket operation on non-socket 38 Socket operation on non-socket 38
EDESTADDRREQ Destination address required 89 Destination address required 96 Destination address required 39 Destination address required 39
EMSGSIZE Message too long 90 Message too long 97 Inappropriate message buffer length 40 Message too long 40
EPROTOTYPE Protocol wrong type for socket 91 Protocol wrong type for socket 98 Protocol wrong type for socket 41 Protocol wrong type for socket 41
ENOPROTOOPT Protocol not available 92 Protocol not available 99 Protocol not available 42 Protocol not available 42
EPROTONOSUPPORT Protocol not supported 93 Protocol not supported 120 Protocol not supported 43 Protocol not supported 43
EOPNOTSUPP Operation not supported on socket 95 Operation not supported on transport endpoint 122 Operation not supported on socket 45 Operation not supported on socket 45
EAFNOSUPPORT Address family not supported by 97 Address family not supported by protocol 124 Address family not supported by 47 Address family not supported by protocol family 47
EADDRINUSE Address already in use 98 Address already in use 125 Address already in use 48 Address already in use 48
EADDRNOTAVAIL Can't assign requested address 99 Cannot assign requested address 126 Can't assign requested address 49 Can't assign requested address 49
ENETDOWN Network is down 100 Network is down 127 Network is down 50 Network is down 50
ENETUNREACH Network is unreachable 101 Network is unreachable 128 Network is unreachable 51 Network is unreachable 51
ENETRESET Network dropped connection because 102 Network dropped connection because of reset 129 Network dropped connection because 52 Network dropped connection on reset 52
ECONNABORTED Software caused connection abort 103 Software caused connection abort 130 Software caused connection abort 53 Software caused connection abort 53
ECONNRESET Connection reset by peer 104 Connection reset by peer 131 Connection reset by peer 54 Connection reset by peer 54
ENOBUFS No buffer space available 105 No buffer space available 132 No buffer space available 55 No buffer space available 55
EISCONN Socket is already connected 106 Transport endpoint is already connected 133 Socket is already connected 56 Socket is already connected 56
ENOTCONN Socket is not connected 107 Transport endpoint is not connected 134 Socket is not connected 57 Socket is not connected 57
ETIMEDOUT Connection timed out 110 Connection timed out 145 Connection timed out 60 Connection timed out 60
ECONNREFUSED Connection refused 111 Connection refused 146 Connection refused 61 Connection refused 61
EHOSTUNREACH No route to host 113 No route to host 148 No route to host 65 No route to host 65
ELOOP Symbolic link loop 40 Too many symbolic links encountered 90 Symbolic link loop 62 Too many levels of symbolic links 62
ENAMETOOLONG path name is too long 36 File name too long 78 Filename too long 63 File name too long 63
ENOTEMPTY directory not empty 39 Directory not empty 93 Directory not empty 66 Directory not empty 66
ENOSYS Unsupported file system operation 38 Function not implemented 89 Function not implemented 78 Function not implemented 78
EILSEQ Illegal byte sequence. 84 Illegal byte sequence 88 Illegal byte sequence. 116 Invalid wide character 86
EOVERFLOW value too large to be stored in data type 75 Value too large for defined data type 79 value too large to be stored in data type 103 Value too large to be stored in data type [5] 84
                 
  OSX 10.3.8 MSVC6        
EPERM Operation not permitted 1 Operation not permitted 1 Operation not permitted      
ENOENT No such file or directory 2 No such file or directory 2 No such file or directory      
ESRCH No such process 3 No such process 3 No such process      
EINTR Interrupted system call 4 Interrupted system call 4 Interrupted function call      
EIO Input/output error 5 Input/output error 5 Input/output error      
ENXIO Device not configured 6 Device not configured 6 No such device or address      
E2BIG Argument list too long 7 Argument list too long 7 Arg list too long      
ENOEXEC Exec format error 8 Exec format error 8 Exec format error      
EBADF Bad file descriptor 9 Bad file descriptor 9 Bad file descriptor      
ECHILD No child processes 10 No child processes 10 No child processes      
EAGAIN Resource temporarily unavailable 35 Resource temporarily unavailable 11 Resource temporarily unavailable      
ENOMEM Cannot allocate memory 12 Cannot allocate memory 12 Not enough space      
EACCES Permission denied 13 Permission denied 13 Permission denied      
EFAULT Bad address 14 Bad address 14 Bad address      
ENOTBLK Block device required 15 Block device required 15 Unknown error      
EBUSY Device busy 16 Device busy 16 Resource device      
EEXIST File exists 17 File exists 17 File exists      
EXDEV Cross-device link 18 Cross-device link 18 Improper link      
ENODEV Operation not supported by device 19 Operation not supported by device 19 No such device      
ENOTDIR Not a directory 20 Not a directory 20 Not a directory      
EISDIR Is a directory 21 Is a directory 21 Is a directory      
EINVAL Invalid argument 22 Invalid argument 22 Invalid argument      
ENFILE Too many open files in system 23 Too many open files in system 23 Too many open files in system      
EMFILE Too many open files 24 Too many open files 24 Too many open files      
ENOTTY Inappropriate ioctl for device 25 Inappropriate ioctl for device 25 Inappropriate I/O control operation      
ETXTBSY Text file busy 26 Text file busy 26 Unknown error      
EFBIG File too large 27 File too large 27 File too large      
ENOSPC No space left on device 28 No space left on device 28 No space left on device      
ESPIPE Illegal seek 29 Illegal seek 29 Invalid seek      
EROFS Read-only filesystem 30 Read-only file system 30 Read-only file system      
EMLINK Too many links 31 Too many links 31 Too many links      
EPIPE Broken pipe 32 Broken pipe 32 Broken pipe      
EDOM Numerical argument out of domain 33 Numerical argument out of domain 33 Domain error      
ERANGE Result too large 34 Result too large 34 Result too large      
ENOMSG No message of desired type 91 No message of desired type          
EIDRM Identifier removed 90 Identifier removed          
EDEADLK Resource deadlock avoided [5] 11 Resource deadlock avoided 36 Resource deadlock avoided      
ENOLCK No locks available 77 No locks available 39 No locks available      
ESTALE Stale NFS file handle 70 Stale NFS file handle          
EINPROGRESS Operation now in progress 36 Operation now in progress          
EALREADY Operation already in progress 37 Operation already in progress          
ENOTSOCK Socket operation on non-socket 38 Socket operation on non-socket          
EDESTADDRREQ Destination address required 39 Destination address required          
EMSGSIZE Message too long 40 Message too long          
EPROTOTYPE Protocol wrong type for socket 41 Protocol wrong type for socket          
ENOPROTOOPT Protocol not available 42 Protocol not available          
EPROTONOSUPPORT Protocol not supported 43 Protocol not supported          
EOPNOTSUPP Operation not supported 45 Operation not supported          
EAFNOSUPPORT Address family not supported by protocol family 47 Address family not supported by protocol family          
EADDRINUSE Address already in use 48 Address already in use          
EADDRNOTAVAIL Can't assign requested address 49 Can't assign requested address          
ENETDOWN Network is down 50 Network is down          
ENETUNREACH Network is unreachable 51 Network is unreachable          
ENETRESET Network dropped connection on reset 52 Network dropped connection on reset          
ECONNABORTED Software caused connection abort 53 Software caused connection abort          
ECONNRESET Connection reset by peer 54 Connection reset by peer          
ENOBUFS No buffer space available 55 No buffer space available          
EISCONN Socket is already connected 56 Socket is already connected          
ENOTCONN Socket is not connected 57 Socket is not connected          
ETIMEDOUT Operation timed out 60 Operation timed out          
ECONNREFUSED Connection refused 61 Connection refused          
EHOSTUNREACH No route to host 65 No route to host          
ELOOP Too many levels of symbolic links 62 Too many levels of symbolic links          
ENAMETOOLONG File name too long 63 File name too long 38 Filename too long      
ENOTEMPTY Directory not empty 66 Directory not empty 41 Directory not empty      
ENOSYS Function not implemented 78 Function not implemented 40 Function not implemented      
EILSEQ Illegal byte sequence 92 Illegal byte sequence 42 Illegal byte sequence      
EOVERFLOW Value too large to be stored in data type 84 Value too large to be stored in data type          


[2] AIX EWOULDBLOCK is 11 "Operation would block" if _XOPEN_SOURCE_EXTENDED is 1 meaning SUS UNIX95
[3] SUSv3 states EAGAIN "Resource unavailable, try again" may be the same value as EWOULDBLOCK and indeed many of the platforms listed here have the same value.
[4] IRIX error codes > 256 omitted
[5] FreeBSD EDEADLK 11 "Resource deadlock avoided" used to be EAGAIN
[6] Linux does not have ECANCELED so it is defined to the invlid code 125
[*] HP-UX must define EDOM and ERANGE somewhere as they are ANSI C. I have to investigate why they weren't defined in the main errno header

Michael B Allen <mba2000 ioplex com>
Copyright (c) Sat Feb 26 15:02:33 EST 2005

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AIX TUF HP-UX Solaris SUS Error Code
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