---
breadcrumbs:
- - /chromium-os/developer-library/reference
  - Chromium OS > Developer Library > Reference
page_name: errnos
title: Linux Error Number Table (errno)
---

# 

These are the error numbers (errno) and their corresponding symbolic names.

While some architectures/ABIs have different number<->symbol mappings, they're
equivalent on x86 (32-bit & 64-bit) and arm (32-bit & 64-bit).

For more details on errno's in general, see the
[errno(3)](https://man7.org/linux/man-pages/man3/errno.3.html) man page.

If you're writing some shell scripts, check out the `errno` utility.

## Table

<!--
Note: This table is generated by the errnos.py helper script.  Do not hand edit.
-->

| number | hex | symbol | description |
|:------:|:---:|--------|-------------|
| 1 | 0x01 | EPERM | Operation not permitted |
| 2 | 0x02 | ENOENT | No such file or directory |
| 3 | 0x03 | ESRCH | No such process |
| 4 | 0x04 | EINTR | Interrupted system call |
| 5 | 0x05 | EIO | Input/output error |
| 6 | 0x06 | ENXIO | No such device or address |
| 7 | 0x07 | E2BIG | Argument list too long |
| 8 | 0x08 | ENOEXEC | Exec format error |
| 9 | 0x09 | EBADF | Bad file descriptor |
| 10 | 0x0a | ECHILD | No child processes |
| 11 | 0x0b | EAGAIN | Resource temporarily unavailable |
| 11 | 0x0b | EWOULDBLOCK | *(Same value as EAGAIN)* Resource temporarily unavailable |
| 12 | 0x0c | ENOMEM | Cannot allocate memory |
| 13 | 0x0d | EACCES | Permission denied |
| 14 | 0x0e | EFAULT | Bad address |
| 15 | 0x0f | ENOTBLK | Block device required |
| 16 | 0x10 | EBUSY | Device or resource busy |
| 17 | 0x11 | EEXIST | File exists |
| 18 | 0x12 | EXDEV | Invalid cross-device link |
| 19 | 0x13 | ENODEV | No such device |
| 20 | 0x14 | ENOTDIR | Not a directory |
| 21 | 0x15 | EISDIR | Is a directory |
| 22 | 0x16 | EINVAL | Invalid argument |
| 23 | 0x17 | ENFILE | Too many open files in system |
| 24 | 0x18 | EMFILE | Too many open files |
| 25 | 0x19 | ENOTTY | Inappropriate ioctl for device |
| 26 | 0x1a | ETXTBSY | Text file busy |
| 27 | 0x1b | EFBIG | File too large |
| 28 | 0x1c | ENOSPC | No space left on device |
| 29 | 0x1d | ESPIPE | Illegal seek |
| 30 | 0x1e | EROFS | Read-only file system |
| 31 | 0x1f | EMLINK | Too many links |
| 32 | 0x20 | EPIPE | Broken pipe |
| 33 | 0x21 | EDOM | Numerical argument out of domain |
| 34 | 0x22 | ERANGE | Numerical result out of range |
| 35 | 0x23 | EDEADLK | Resource deadlock avoided |
| 35 | 0x23 | EDEADLOCK | *(Same value as EDEADLK)* Resource deadlock avoided |
| 36 | 0x24 | ENAMETOOLONG | File name too long |
| 37 | 0x25 | ENOLCK | No locks available |
| 38 | 0x26 | ENOSYS | Function not implemented |
| 39 | 0x27 | ENOTEMPTY | Directory not empty |
| 40 | 0x28 | ELOOP | Too many levels of symbolic links |
| 41 | 0x29 | | *not implemented* ||
| 42 | 0x2a | ENOMSG | No message of desired type |
| 43 | 0x2b | EIDRM | Identifier removed |
| 44 | 0x2c | ECHRNG | Channel number out of range |
| 45 | 0x2d | EL2NSYNC | Level 2 not synchronized |
| 46 | 0x2e | EL3HLT | Level 3 halted |
| 47 | 0x2f | EL3RST | Level 3 reset |
| 48 | 0x30 | ELNRNG | Link number out of range |
| 49 | 0x31 | EUNATCH | Protocol driver not attached |
| 50 | 0x32 | ENOCSI | No CSI structure available |
| 51 | 0x33 | EL2HLT | Level 2 halted |
| 52 | 0x34 | EBADE | Invalid exchange |
| 53 | 0x35 | EBADR | Invalid request descriptor |
| 54 | 0x36 | EXFULL | Exchange full |
| 55 | 0x37 | ENOANO | No anode |
| 56 | 0x38 | EBADRQC | Invalid request code |
| 57 | 0x39 | EBADSLT | Invalid slot |
| 58 | 0x3a | | *not implemented* ||
| 59 | 0x3b | EBFONT | Bad font file format |
| 60 | 0x3c | ENOSTR | Device not a stream |
| 61 | 0x3d | ENODATA | No data available |
| 62 | 0x3e | ETIME | Timer expired |
| 63 | 0x3f | ENOSR | Out of streams resources |
| 64 | 0x40 | ENONET | Machine is not on the network |
| 65 | 0x41 | ENOPKG | Package not installed |
| 66 | 0x42 | EREMOTE | Object is remote |
| 67 | 0x43 | ENOLINK | Link has been severed |
| 68 | 0x44 | EADV | Advertise error |
| 69 | 0x45 | ESRMNT | Srmount error |
| 70 | 0x46 | ECOMM | Communication error on send |
| 71 | 0x47 | EPROTO | Protocol error |
| 72 | 0x48 | EMULTIHOP | Multihop attempted |
| 73 | 0x49 | EDOTDOT | RFS specific error |
| 74 | 0x4a | EBADMSG | Bad message |
| 75 | 0x4b | EOVERFLOW | Value too large for defined data type |
| 76 | 0x4c | ENOTUNIQ | Name not unique on network |
| 77 | 0x4d | EBADFD | File descriptor in bad state |
| 78 | 0x4e | EREMCHG | Remote address changed |
| 79 | 0x4f | ELIBACC | Can not access a needed shared library |
| 80 | 0x50 | ELIBBAD | Accessing a corrupted shared library |
| 81 | 0x51 | ELIBSCN | .lib section in a.out corrupted |
| 82 | 0x52 | ELIBMAX | Attempting to link in too many shared libraries |
| 83 | 0x53 | ELIBEXEC | Cannot exec a shared library directly |
| 84 | 0x54 | EILSEQ | Invalid or incomplete multibyte or wide character |
| 85 | 0x55 | ERESTART | Interrupted system call should be restarted |
| 86 | 0x56 | ESTRPIPE | Streams pipe error |
| 87 | 0x57 | EUSERS | Too many users |
| 88 | 0x58 | ENOTSOCK | Socket operation on non-socket |
| 89 | 0x59 | EDESTADDRREQ | Destination address required |
| 90 | 0x5a | EMSGSIZE | Message too long |
| 91 | 0x5b | EPROTOTYPE | Protocol wrong type for socket |
| 92 | 0x5c | ENOPROTOOPT | Protocol not available |
| 93 | 0x5d | EPROTONOSUPPORT | Protocol not supported |
| 94 | 0x5e | ESOCKTNOSUPPORT | Socket type not supported |
| 95 | 0x5f | EOPNOTSUPP | Operation not supported |
| 95 | 0x5f | ENOTSUP | *(Same value as EOPNOTSUPP)* Operation not supported |
| 96 | 0x60 | EPFNOSUPPORT | Protocol family not supported |
| 97 | 0x61 | EAFNOSUPPORT | Address family not supported by protocol |
| 98 | 0x62 | EADDRINUSE | Address already in use |
| 99 | 0x63 | EADDRNOTAVAIL | Cannot assign requested address |
| 100 | 0x64 | ENETDOWN | Network is down |
| 101 | 0x65 | ENETUNREACH | Network is unreachable |
| 102 | 0x66 | ENETRESET | Network dropped connection on reset |
| 103 | 0x67 | ECONNABORTED | Software caused connection abort |
| 104 | 0x68 | ECONNRESET | Connection reset by peer |
| 105 | 0x69 | ENOBUFS | No buffer space available |
| 106 | 0x6a | EISCONN | Transport endpoint is already connected |
| 107 | 0x6b | ENOTCONN | Transport endpoint is not connected |
| 108 | 0x6c | ESHUTDOWN | Cannot send after transport endpoint shutdown |
| 109 | 0x6d | ETOOMANYREFS | Too many references: cannot splice |
| 110 | 0x6e | ETIMEDOUT | Connection timed out |
| 111 | 0x6f | ECONNREFUSED | Connection refused |
| 112 | 0x70 | EHOSTDOWN | Host is down |
| 113 | 0x71 | EHOSTUNREACH | No route to host |
| 114 | 0x72 | EALREADY | Operation already in progress |
| 115 | 0x73 | EINPROGRESS | Operation now in progress |
| 116 | 0x74 | ESTALE | Stale file handle |
| 117 | 0x75 | EUCLEAN | Structure needs cleaning |
| 118 | 0x76 | ENOTNAM | Not a XENIX named type file |
| 119 | 0x77 | ENAVAIL | No XENIX semaphores available |
| 120 | 0x78 | EISNAM | Is a named type file |
| 121 | 0x79 | EREMOTEIO | Remote I/O error |
| 122 | 0x7a | EDQUOT | Disk quota exceeded |
| 123 | 0x7b | ENOMEDIUM | No medium found |
| 124 | 0x7c | EMEDIUMTYPE | Wrong medium type |
| 125 | 0x7d | ECANCELED | Operation canceled |
| 126 | 0x7e | ENOKEY | Required key not available |
| 127 | 0x7f | EKEYEXPIRED | Key has expired |
| 128 | 0x80 | EKEYREVOKED | Key has been revoked |
| 129 | 0x81 | EKEYREJECTED | Key was rejected by service |
| 130 | 0x82 | EOWNERDEAD | Owner died |
| 131 | 0x83 | ENOTRECOVERABLE | State not recoverable |
| 132 | 0x84 | ERFKILL | Operation not possible due to RF-kill |
| 133 | 0x85 | EHWPOISON | Memory page has hardware error |
