Are you tired of grepping /usr/include to figure out what that system error number means? Here's a handy guide to all the errno values for your system. Use your browser search functionality to find the one you're looking for or just scroll down the table.
You are viewing the error codes for Linux; if you want to view the error codes for a different operating system, select it from the dropdown menu.
# #define Description1 EPERM Operation not permitted2 ENOENT No such file or directory3 ESRCH No such process4 EINTR Interrupted system call5 EIO I/O error6 ENXIO No such device or address8 ENOEXEC Exec format error9 EBADF Bad file number10 ECHILD No child processes11 EAGAIN Try again12 ENOMEM Out of memory13 EACCES Permission denied14 EFAULT Bad address15 ENOTBLK Block device required16 EBUSY Device or resource busy17 EEXIST File exists18 EXDEV Cross-device link19 ENODEV No such device20 ENOTDIR Not a directory21 EISDIR Is a directory22 EINVAL Invalid argument23 ENFILE File table overflow24 EMFILE Too many open files25 ENOTTY Not a typewriter26 ETXTBSY Text file busy27 EFBIG File too large28 ENOSPC No space left on device29 ESPIPE Illegal seek30 EROFS Read-only file system31 EMLINK Too many links32 EPIPE Broken pipe33 EDOM Math argument out of domain of func34 ERANGE Math result not representable35 EDEADLK Resource deadlock would occur36 ENAMETOOLONG File name too long37 ENOLCK No record locks available38 ENOSYS Invalid system call number39 ENOTEMPTY Directory not empty40 ELOOP Too many symbolic links encountered42 ENOMSG No message of desired type43 EIDRM Identifier removed44 ECHRNG Channel number out of range48 ELNRNG Link number out of range49 EUNATCH Protocol driver not attached50 ENOCSI No CSI structure available52 EBADE Invalid exchange53 EBADR Invalid request descriptor54 EXFULL Exchange full55 ENOANO No anode56 EBADRQC Invalid request code57 EBADSLT Invalid slot59 EBFONT Bad font file format60 ENOSTR Device not a stream61 ENODATA No data available62 ETIME Timer expired63 ENOSR Out of streams resources64 ENONET Machine is not on the network65 ENOPKG Package not installed66 EREMOTE Object is remote67 ENOLINK Link has been severed68 EADV Advertise error69 ESRMNT Srmount error70 ECOMM Communication error on send71 EPROTO Protocol error72 EMULTIHOP Multihop attempted73 EDOTDOT RFS specific error74 EBADMSG Not a data message75 EOVERFLOW Value too large for defined data type76 ENOTUNIQ Name not unique on network77 EBADFD File descriptor in bad state78 EREMCHG Remote address changed79 ELIBACC Can not access a needed shared library80 ELIBBAD Accessing a corrupted shared library81 ELIBSCN .lib section in a.out corrupted82 ELIBMAX Attempting to link in too many shared libraries83 ELIBEXEC Cannot exec a shared library directly84 EILSEQ Illegal byte sequence85 ERESTART Interrupted system call should be restarted86 ESTRPIPE Streams pipe error87 EUSERS Too many users88 ENOTSOCK Socket operation on non-socket89 EDESTADDRREQ Destination address required90 EMSGSIZE Message too long91 EPROTOTYPE Protocol wrong type for socket92 ENOPROTOOPT Protocol not available93 EPROTONOSUPPORT Protocol not supported94 ESOCKTNOSUPPORT Socket type not supported95 EOPNOTSUPP Operation not supported on transport endpoint96 EPFNOSUPPORT Protocol family not supported97 EAFNOSUPPORT Address family not supported by protocol98 EADDRINUSE Address already in use99 EADDRNOTAVAIL Cannot assign requested address100 ENETDOWN Network is down101 ENETUNREACH Network is unreachable102 ENETRESET Network dropped connection because of reset103 ECONNABORTED Software caused connection abort104 ECONNRESET Connection reset by peer105 ENOBUFS No buffer space available106 EISCONN Transport endpoint is already connected107 ENOTCONN Transport endpoint is not connected108 ESHUTDOWN Cannot send after transport endpoint shutdown109 ETOOMANYREFS Too many references: cannot splice110 ETIMEDOUT Connection timed out111 ECONNREFUSED Connection refused112 EHOSTDOWN Host is down113 EHOSTUNREACH No route to host114 EALREADY Operation already in progress115 EINPROGRESS Operation now in progress116 ESTALE Stale file handle117 EUCLEAN Structure needs cleaning118 ENOTNAM Not a XENIX named type file119 ENAVAIL No XENIX semaphores available120 EISNAM Is a named type file121 EREMOTEIO Remote I/O error122 EDQUOT Quota exceeded123 ENOMEDIUM No medium found124 EMEDIUMTYPE Wrong medium type125 ECANCELED Operation Canceled126 ENOKEY Required key not available127 EKEYEXPIRED Key has expired128 EKEYREVOKED Key has been revoked129 EKEYREJECTED Key was rejected by service130 EOWNERDEAD Owner died131 ENOTRECOVERABLE State not recoverable132 ERFKILL Operation not possible due to RF-kill133 EHWPOISON Memory page has hardware error
To load the error information as JSON, use:
/api/errno/linux/json
[
{
"const" : "EPERM",
"desc" : "Operation not permitted",
"errno" : 1
},
{
"const" : "ENOENT",
"desc" : "No such file or directory",
"errno" : 2
},
{
"const" : "ESRCH",
"desc" : "No such process",
"errno" : 3
},
{
"const" : "EINTR",
"desc" : "Interrupted system call",
"errno" : 4
},
{
"const" : "EIO",
"desc" : "I/O error",
"errno" : 5
},
{
"const" : "ENXIO",
"desc" : "No such device or address",
"errno" : 6
},
{
"const" : "ENOEXEC",
"desc" : "Exec format error",
"errno" : 8
},
{
"const" : "EBADF",
"desc" : "Bad file number",
"errno" : 9
},
{
"const" : "ECHILD",
"desc" : "No child processes",
"errno" : 10
},
{
"const" : "EAGAIN",
"desc" : "Try again",
"errno" : 11
},
{
"const" : "ENOMEM",
"desc" : "Out of memory",
"errno" : 12
},
{
"const" : "EACCES",
"desc" : "Permission denied",
"errno" : 13
},
{
"const" : "EFAULT",
"desc" : "Bad address",
"errno" : 14
},
{
"const" : "ENOTBLK",
"desc" : "Block device required",
"errno" : 15
},
{
"const" : "EBUSY",
"desc" : "Device or resource busy",
"errno" : 16
},
{
"const" : "EEXIST",
"desc" : "File exists",
"errno" : 17
},
{
"const" : "EXDEV",
"desc" : "Cross-device link",
"errno" : 18
},
{
"const" : "ENODEV",
"desc" : "No such device",
"errno" : 19
},
{
"const" : "ENOTDIR",
"desc" : "Not a directory",
"errno" : 20
},
{
"const" : "EISDIR",
"desc" : "Is a directory",
"errno" : 21
},
{
"const" : "EINVAL",
"desc" : "Invalid argument",
"errno" : 22
},
{
"const" : "ENFILE",
"desc" : "File table overflow",
"errno" : 23
},
{
"const" : "EMFILE",
"desc" : "Too many open files",
"errno" : 24
},
{
"const" : "ENOTTY",
"desc" : "Not a typewriter",
"errno" : 25
},
{
"const" : "ETXTBSY",
"desc" : "Text file busy",
"errno" : 26
},
{
"const" : "EFBIG",
"desc" : "File too large",
"errno" : 27
},
{
"const" : "ENOSPC",
"desc" : "No space left on device",
"errno" : 28
},
{
"const" : "ESPIPE",
"desc" : "Illegal seek",
"errno" : 29
},
{
"const" : "EROFS",
"desc" : "Read-only file system",
"errno" : 30
},
{
"const" : "EMLINK",
"desc" : "Too many links",
"errno" : 31
},
{
"const" : "EPIPE",
"desc" : "Broken pipe",
"errno" : 32
},
{
"const" : "EDOM",
"desc" : "Math argument out of domain of func",
"errno" : 33
},
{
"const" : "ERANGE",
"desc" : "Math result not representable",
"errno" : 34
},
{
"const" : "EDEADLK",
"desc" : "Resource deadlock would occur",
"errno" : 35
},
{
"const" : "ENAMETOOLONG",
"desc" : "File name too long",
"errno" : 36
},
{
"const" : "ENOLCK",
"desc" : "No record locks available",
"errno" : 37
},
{
"const" : "ENOSYS",
"desc" : "Invalid system call number",
"errno" : 38
},
{
"const" : "ENOTEMPTY",
"desc" : "Directory not empty",
"errno" : 39
},
{
"const" : "ELOOP",
"desc" : "Too many symbolic links encountered",
"errno" : 40
},
{
"const" : "ENOMSG",
"desc" : "No message of desired type",
"errno" : 42
},
{
"const" : "EIDRM",
"desc" : "Identifier removed",
"errno" : 43
},
{
"const" : "ECHRNG",
"desc" : "Channel number out of range",
"errno" : 44
},
{
"const" : "ELNRNG",
"desc" : "Link number out of range",
"errno" : 48
},
{
"const" : "EUNATCH",
"desc" : "Protocol driver not attached",
"errno" : 49
},
{
"const" : "ENOCSI",
"desc" : "No CSI structure available",
"errno" : 50
},
{
"const" : "EBADE",
"desc" : "Invalid exchange",
"errno" : 52
},
{
"const" : "EBADR",
"desc" : "Invalid request descriptor",
"errno" : 53
},
{
"const" : "EXFULL",
"desc" : "Exchange full",
"errno" : 54
},
{
"const" : "ENOANO",
"desc" : "No anode",
"errno" : 55
},
{
"const" : "EBADRQC",
"desc" : "Invalid request code",
"errno" : 56
},
{
"const" : "EBADSLT",
"desc" : "Invalid slot",
"errno" : 57
},
{
"const" : "EBFONT",
"desc" : "Bad font file format",
"errno" : 59
},
{
"const" : "ENOSTR",
"desc" : "Device not a stream",
"errno" : 60
},
{
"const" : "ENODATA",
"desc" : "No data available",
"errno" : 61
},
{
"const" : "ETIME",
"desc" : "Timer expired",
"errno" : 62
},
{
"const" : "ENOSR",
"desc" : "Out of streams resources",
"errno" : 63
},
{
"const" : "ENONET",
"desc" : "Machine is not on the network",
"errno" : 64
},
{
"const" : "ENOPKG",
"desc" : "Package not installed",
"errno" : 65
},
{
"const" : "EREMOTE",
"desc" : "Object is remote",
"errno" : 66
},
{
"const" : "ENOLINK",
"desc" : "Link has been severed",
"errno" : 67
},
{
"const" : "EADV",
"desc" : "Advertise error",
"errno" : 68
},
{
"const" : "ESRMNT",
"desc" : "Srmount error",
"errno" : 69
},
{
"const" : "ECOMM",
"desc" : "Communication error on send",
"errno" : 70
},
{
"const" : "EPROTO",
"desc" : "Protocol error",
"errno" : 71
},
{
"const" : "EMULTIHOP",
"desc" : "Multihop attempted",
"errno" : 72
},
{
"const" : "EDOTDOT",
"desc" : "RFS specific error",
"errno" : 73
},
{
"const" : "EBADMSG",
"desc" : "Not a data message",
"errno" : 74
},
{
"const" : "EOVERFLOW",
"desc" : "Value too large for defined data type",
"errno" : 75
},
{
"const" : "ENOTUNIQ",
"desc" : "Name not unique on network",
"errno" : 76
},
{
"const" : "EBADFD",
"desc" : "File descriptor in bad state",
"errno" : 77
},
{
"const" : "EREMCHG",
"desc" : "Remote address changed",
"errno" : 78
},
{
"const" : "ELIBACC",
"desc" : "Can not access a needed shared library",
"errno" : 79
},
{
"const" : "ELIBBAD",
"desc" : "Accessing a corrupted shared library",
"errno" : 80
},
{
"const" : "ELIBSCN",
"desc" : ".lib section in a.out corrupted",
"errno" : 81
},
{
"const" : "ELIBMAX",
"desc" : "Attempting to link in too many shared libraries",
"errno" : 82
},
{
"const" : "ELIBEXEC",
"desc" : "Cannot exec a shared library directly",
"errno" : 83
},
{
"const" : "EILSEQ",
"desc" : "Illegal byte sequence",
"errno" : 84
},
{
"const" : "ERESTART",
"desc" : "Interrupted system call should be restarted",
"errno" : 85
},
{
"const" : "ESTRPIPE",
"desc" : "Streams pipe error",
"errno" : 86
},
{
"const" : "EUSERS",
"desc" : "Too many users",
"errno" : 87
},
{
"const" : "ENOTSOCK",
"desc" : "Socket operation on non-socket",
"errno" : 88
},
{
"const" : "EDESTADDRREQ",
"desc" : "Destination address required",
"errno" : 89
},
{
"const" : "EMSGSIZE",
"desc" : "Message too long",
"errno" : 90
},
{
"const" : "EPROTOTYPE",
"desc" : "Protocol wrong type for socket",
"errno" : 91
},
{
"const" : "ENOPROTOOPT",
"desc" : "Protocol not available",
"errno" : 92
},
{
"const" : "EPROTONOSUPPORT",
"desc" : "Protocol not supported",
"errno" : 93
},
{
"const" : "ESOCKTNOSUPPORT",
"desc" : "Socket type not supported",
"errno" : 94
},
{
"const" : "EOPNOTSUPP",
"desc" : "Operation not supported on transport endpoint",
"errno" : 95
},
{
"const" : "EPFNOSUPPORT",
"desc" : "Protocol family not supported",
"errno" : 96
},
{
"const" : "EAFNOSUPPORT",
"desc" : "Address family not supported by protocol",
"errno" : 97
},
{
"const" : "EADDRINUSE",
"desc" : "Address already in use",
"errno" : 98
},
{
"const" : "EADDRNOTAVAIL",
"desc" : "Cannot assign requested address",
"errno" : 99
},
{
"const" : "ENETDOWN",
"desc" : "Network is down",
"errno" : 100
},
{
"const" : "ENETUNREACH",
"desc" : "Network is unreachable",
"errno" : 101
},
{
"const" : "ENETRESET",
"desc" : "Network dropped connection because of reset",
"errno" : 102
},
{
"const" : "ECONNABORTED",
"desc" : "Software caused connection abort",
"errno" : 103
},
{
"const" : "ECONNRESET",
"desc" : "Connection reset by peer",
"errno" : 104
},
{
"const" : "ENOBUFS",
"desc" : "No buffer space available",
"errno" : 105
},
{
"const" : "EISCONN",
"desc" : "Transport endpoint is already connected",
"errno" : 106
},
{
"const" : "ENOTCONN",
"desc" : "Transport endpoint is not connected",
"errno" : 107
},
{
"const" : "ESHUTDOWN",
"desc" : "Cannot send after transport endpoint shutdown",
"errno" : 108
},
{
"const" : "ETOOMANYREFS",
"desc" : "Too many references: cannot splice",
"errno" : 109
},
{
"const" : "ETIMEDOUT",
"desc" : "Connection timed out",
"errno" : 110
},
{
"const" : "ECONNREFUSED",
"desc" : "Connection refused",
"errno" : 111
},
{
"const" : "EHOSTDOWN",
"desc" : "Host is down",
"errno" : 112
},
{
"const" : "EHOSTUNREACH",
"desc" : "No route to host",
"errno" : 113
},
{
"const" : "EALREADY",
"desc" : "Operation already in progress",
"errno" : 114
},
{
"const" : "EINPROGRESS",
"desc" : "Operation now in progress",
"errno" : 115
},
{
"const" : "ESTALE",
"desc" : "Stale file handle",
"errno" : 116
},
{
"const" : "EUCLEAN",
"desc" : "Structure needs cleaning",
"errno" : 117
},
{
"const" : "ENOTNAM",
"desc" : "Not a XENIX named type file",
"errno" : 118
},
{
"const" : "ENAVAIL",
"desc" : "No XENIX semaphores available",
"errno" : 119
},
{
"const" : "EISNAM",
"desc" : "Is a named type file",
"errno" : 120
},
{
"const" : "EREMOTEIO",
"desc" : "Remote I/O error",
"errno" : 121
},
{
"const" : "EDQUOT",
"desc" : "Quota exceeded",
"errno" : 122
},
{
"const" : "ENOMEDIUM",
"desc" : "No medium found",
"errno" : 123
},
{
"const" : "EMEDIUMTYPE",
"desc" : "Wrong medium type",
"errno" : 124
},
{
"const" : "ECANCELED",
"desc" : "Operation Canceled",
"errno" : 125
},
{
"const" : "ENOKEY",
"desc" : "Required key not available",
"errno" : 126
},
{
"const" : "EKEYEXPIRED",
"desc" : "Key has expired",
"errno" : 127
},
{
"const" : "EKEYREVOKED",
"desc" : "Key has been revoked",
"errno" : 128
},
{
"const" : "EKEYREJECTED",
"desc" : "Key was rejected by service",
"errno" : 129
},
{
"const" : "EOWNERDEAD",
"desc" : "Owner died",
"errno" : 130
},
{
"const" : "ENOTRECOVERABLE",
"desc" : "State not recoverable",
"errno" : 131
},
{
"const" : "ERFKILL",
"desc" : "Operation not possible due to RF-kill",
"errno" : 132
},
{
"const" : "EHWPOISON",
"desc" : "Memory page has hardware error",
"errno" : 133
}
]
For JSONP, add a callback value as a query parameter:
/api/errno/linux/json?callback=myCallback