System error codes linux

Number	Error Code	Description
1	EPERM	Operation not permitted
2	ENOENT	No such file or directory
3	ESRCH	No such process
4	EINTR	Interrupted system call
5	EIO	I/O error
6	ENXIO	No such device or address
7	E2BIG	Argument list too long
8	ENOEXEC	Exec format error
9	EBADF	Bad file number
10	ECHILD	No child processes
11	EAGAIN	Try again
12	ENOMEM	Out of memory
13	EACCES	Permission denied
14	EFAULT	Bad address
15	ENOTBLK	Block device required
16	EBUSY	Device or resource busy
17	EEXIST	File exists
18	EXDEV	Cross-device link
19	ENODEV	No such device
20	ENOTDIR	Not a directory
21	EISDIR	Is a directory
22	EINVAL	Invalid argument
23	ENFILE	File table overflow
24	EMFILE	Too many open files
25	ENOTTY	Not a typewriter
26	ETXTBSY	Text file busy
27	EFBIG	File too large
28	ENOSPC	No space left on device
29	ESPIPE	Illegal seek
30	EROFS	Read-only file system
31	EMLINK	Too many links
32	EPIPE	Broken pipe
33	EDOM	Math argument out of domain of func
34	ERANGE	Math result not representable
35	EDEADLK	Resource deadlock would occur
36	ENAMETOOLONG	File name too long
37	ENOLCK	No record locks available
38	ENOSYS	Function not implemented
39	ENOTEMPTY	Directory not empty
40	ELOOP	Too many symbolic links encountered
42	ENOMSG	No message of desired type
43	EIDRM	Identifier removed
44	ECHRNG	Channel number out of range
45	EL2NSYNC	Level 2 not synchronized
46	EL3HLT	Level 3 halted
47	EL3RST	Level 3 reset
48	ELNRNG	Link number out of range
49	EUNATCH	Protocol driver not attached
50	ENOCSI	No CSI structure available
51	EL2HLT	Level 2 halted
52	EBADE	Invalid exchange
53	EBADR	Invalid request descriptor
54	EXFULL	Exchange full
55	ENOANO	No anode
56	EBADRQC	Invalid request code
57	EBADSLT	Invalid slot
59	EBFONT	Bad font file format
60	ENOSTR	Device not a stream
61	ENODATA	No data available
62	ETIME	Timer expired
63	ENOSR	Out of streams resources
64	ENONET	Machine is not on the network
65	ENOPKG	Package not installed
66	EREMOTE	Object is remote
67	ENOLINK	Link has been severed
68	EADV	Advertise error
69	ESRMNT	Srmount error
70	ECOMM	Communication error on send
71	EPROTO	Protocol error
72	EMULTIHOP	Multihop attempted
73	EDOTDOT	RFS specific error
74	EBADMSG	Not a data message
75	EOVERFLOW	Value too large for defined data type
76	ENOTUNIQ	Name not unique on network
77	EBADFD	File descriptor in bad state
78	EREMCHG	Remote address changed
79	ELIBACC	Can not access a needed shared library
80	ELIBBAD	Accessing a corrupted shared library
81	ELIBSCN	.lib section in a.out corrupted
82	ELIBMAX	Attempting to link in too many shared libraries
83	ELIBEXEC	Cannot exec a shared library directly
84	EILSEQ	Illegal byte sequence
85	ERESTART	Interrupted system call should be restarted
86	ESTRPIPE	Streams pipe error
87	EUSERS	Too many users
88	ENOTSOCK	Socket operation on non-socket
89	EDESTADDRREQ	Destination address required
90	EMSGSIZE	Message too long
91	EPROTOTYPE	Protocol wrong type for socket
92	ENOPROTOOPT	Protocol not available
93	EPROTONOSUPPORT	Protocol not supported
94	ESOCKTNOSUPPORT	Socket type not supported
95	EOPNOTSUPP	Operation not supported on transport endpoint
96	EPFNOSUPPORT	Protocol family not supported
97	EAFNOSUPPORT	Address family not supported by protocol
98	EADDRINUSE	Address already in use
99	EADDRNOTAVAIL	Cannot assign requested address
100	ENETDOWN	Network is down
101	ENETUNREACH	Network is unreachable
102	ENETRESET	Network dropped connection because of reset
103	ECONNABORTED	Software caused connection abort
104	ECONNRESET	Connection reset by peer
105	ENOBUFS	No buffer space available
106	EISCONN	Transport endpoint is already connected
107	ENOTCONN	Transport endpoint is not connected
108	ESHUTDOWN	Cannot send after transport endpoint shutdown
109	ETOOMANYREFS	Too many references: cannot splice
110	ETIMEDOUT	Connection timed out
111	ECONNREFUSED	Connection refused
112	EHOSTDOWN	Host is down
113	EHOSTUNREACH	No route to host
114	EALREADY	Operation already in progress
115	EINPROGRESS	Operation now in progress
116	ESTALE	Stale NFS file handle
117	EUCLEAN	Structure needs cleaning
118	ENOTNAM	Not a XENIX named type file
119	ENAVAIL	No XENIX semaphores available
120	EISNAM	Is a named type file
121	EREMOTEIO	Remote I/O error
122	EDQUOT	Quota exceeded
123	ENOMEDIUM	No medium found
124	EMEDIUMTYPE	Wrong medium type
125	ECANCELED	Operation Canceled
126	ENOKEY	Required key not available
127	EKEYEXPIRED	Key has expired
128	EKEYREVOKED	Key has been revoked
129	EKEYREJECTED	Key was rejected by service
130	EOWNERDEAD	Owner died
131	ENOTRECOVERABLE	State not recoverable

Number	Error Code	Description
1	ERROR_INVALID_FUNCTION	Incorrect function.
2	ERROR_FILE_NOT_FOUND	The system cannot find the file specified.
3	ERROR_PATH_NOT_FOUND	The system cannot find the path specified.
4	ERROR_TOO_MANY_OPEN_FILES	The system cannot open the file.
5	ERROR_ACCESS_DENIED	Access is denied.
6	ERROR_INVALID_HANDLE	The handle is invalid.
7	ERROR_ARENA_TRASHED	The storage control blocks were destroyed.
8	ERROR_NOT_ENOUGH_MEMORY	Not enough storage is available to process this command.
9	ERROR_INVALID_BLOCK	The storage control block address is invalid.
10	ERROR_BAD_ENVIRONMENT	The environment is incorrect.
11	ERROR_BAD_FORMAT	An attempt was made to load a program with an incorrect format.
12	ERROR_INVALID_ACCESS	The access code is invalid.
13	ERROR_INVALID_DATA	The data is invalid.
14	ERROR_OUTOFMEMORY	Not enough storage is available to complete this operation.
15	ERROR_INVALID_DRIVE	The system cannot find the drive specified.
16	ERROR_CURRENT_DIRECTORY	The directory cannot be removed.
17	ERROR_NOT_SAME_DEVICE	The system cannot move the file to a different disk drive.
18	ERROR_NO_MORE_FILES	There are no more files.
19	ERROR_WRITE_PROTECT	The media is write protected.
20	ERROR_BAD_UNIT	The system cannot find the device specified.
21	ERROR_NOT_READY	The device is not ready.
22	ERROR_BAD_COMMAND	The device does not recognize the command.
23	ERROR_CRC	Data error (cyclic redundancy check).
24	ERROR_BAD_LENGTH	The program issued a command but the command length is incorrect.
25	ERROR_SEEK	The drive cannot locate a specific area or track on the disk.
26	ERROR_NOT_DOS_DISK	The specified disk or diskette cannot be accessed.
27	ERROR_SECTOR_NOT_FOUND	The drive cannot find the sector requested.
28	ERROR_OUT_OF_PAPER	The printer is out of paper.
29	ERROR_WRITE_FAULT	The system cannot write to the specified device.
30	ERROR_READ_FAULT	The system cannot read from the specified device.
31	ERROR_GEN_FAILURE	A device attached to the system is not functioning.
32	ERROR_SHARING_VIOLATION	The process cannot access the file because it is being used by another process.
33	ERROR_LOCK_VIOLATION	The process cannot access the file because another process has locked a portion of the file.
34	ERROR_WRONG_DISK	The wrong diskette is in the drive. Insert %2 (Volume Serial Number: %3) into drive %1.
36	ERROR_SHARING_BUFFER_EXCEEDED	Too many files opened for sharing.
38	ERROR_HANDLE_EOF	Reached the end of the file.
39	ERROR_HANDLE_DISK_FULL	The disk is full.
87	ERROR_INVALID_PARAMETER	The parameter is incorrect.
112	ERROR_DISK_FULL	The disk is full.
123	ERROR_INVALID_NAME	The file name, directory name, or volume label syntax is incorrect.
1450	ERROR_NO_SYSTEM_RESOURCES	Insufficient system resources exist to complete the requested service.

# @see /usr/include/asm-generic/errno-base.h #ifndef _ASM_GENERIC_ERRNO_BASE_H #define _ASM_GENERIC_ERRNO_BASE_H #define EPERM 1 /* Operation not permitted */ #define ENOENT 2 /* No such file or directory */ #define ESRCH 3 /* No such process */ #define EINTR 4 /* Interrupted system call */ #define EIO 5 /* I/O error */ #define ENXIO 6 /* No such device or address */ #define E2BIG 7 /* Argument list too long */ #define ENOEXEC 8 /* Exec format error */ #define EBADF 9 /* Bad file number */ #define ECHILD 10 /* No child processes */ #define EAGAIN 11 /* Try again */ #define ENOMEM 12 /* Out of memory */ #define EACCES 13 /* Permission denied */ #define EFAULT 14 /* Bad address */ #define ENOTBLK 15 /* Block device required */ #define EBUSY 16 /* Device or resource busy */ #define EEXIST 17 /* File exists */ #define EXDEV 18 /* Cross-device link */ #define ENODEV 19 /* No such device */ #define ENOTDIR 20 /* Not a directory */ #define EISDIR 21 /* Is a directory */ #define EINVAL 22 /* Invalid argument */ #define ENFILE 23 /* File table overflow */ #define EMFILE 24 /* Too many open files */ #define ENOTTY 25 /* Not a typewriter */ #define ETXTBSY 26 /* Text file busy */ #define EFBIG 27 /* File too large */ #define ENOSPC 28 /* No space left on device */ #define ESPIPE 29 /* Illegal seek */ #define EROFS 30 /* Read-only file system */ #define EMLINK 31 /* Too many links */ #define EPIPE 32 /* Broken pipe */ #define EDOM 33 /* Math argument out of domain of func */ #define ERANGE 34 /* Math result not representable */ #endif # @see /usr/include/asm-generic/errno.h #ifndef _ASM_GENERIC_ERRNO_H #define _ASM_GENERIC_ERRNO_H #include <asm-generic/errno-base.h> #define EDEADLK 35 /* Resource deadlock would occur */ #define ENAMETOOLONG 36 /* File name too long */ #define ENOLCK 37 /* No record locks available */ #define ENOSYS 38 /* Function not implemented */ #define ENOTEMPTY 39 /* Directory not empty */ #define ELOOP 40 /* Too many symbolic links encountered */ #define EWOULDBLOCK EAGAIN /* Operation would block */ #define ENOMSG 42 /* No message of desired type */ #define EIDRM 43 /* Identifier removed */ #define ECHRNG 44 /* Channel number out of range */ #define EL2NSYNC 45 /* Level 2 not synchronized */ #define EL3HLT 46 /* Level 3 halted */ #define EL3RST 47 /* Level 3 reset */ #define ELNRNG 48 /* Link number out of range */ #define EUNATCH 49 /* Protocol driver not attached */ #define ENOCSI 50 /* No CSI structure available */ #define EL2HLT 51 /* Level 2 halted */ #define EBADE 52 /* Invalid exchange */ #define EBADR 53 /* Invalid request descriptor */ #define EXFULL 54 /* Exchange full */ #define ENOANO 55 /* No anode */ #define EBADRQC 56 /* Invalid request code */ #define EBADSLT 57 /* Invalid slot */ #define EDEADLOCK EDEADLK #define EBFONT 59 /* Bad font file format */ #define ENOSTR 60 /* Device not a stream */ #define ENODATA 61 /* No data available */ #define ETIME 62 /* Timer expired */ #define ENOSR 63 /* Out of streams resources */ #define ENONET 64 /* Machine is not on the network */ #define ENOPKG 65 /* Package not installed */ #define EREMOTE 66 /* Object is remote */ #define ENOLINK 67 /* Link has been severed */ #define EADV 68 /* Advertise error */ #define ESRMNT 69 /* Srmount error */ #define ECOMM 70 /* Communication error on send */ #define EPROTO 71 /* Protocol error */ #define EMULTIHOP 72 /* Multihop attempted */ #define EDOTDOT 73 /* RFS specific error */ #define EBADMSG 74 /* Not a data message */ #define EOVERFLOW 75 /* Value too large for defined data type */ #define ENOTUNIQ 76 /* Name not unique on network */ #define EBADFD 77 /* File descriptor in bad state */ #define EREMCHG 78 /* Remote address changed */ #define ELIBACC 79 /* Can not access a needed shared library */ #define ELIBBAD 80 /* Accessing a corrupted shared library */ #define ELIBSCN 81 /* .lib section in a.out corrupted */ #define ELIBMAX 82 /* Attempting to link in too many shared libraries */ #define ELIBEXEC 83 /* Cannot exec a shared library directly */ #define EILSEQ 84 /* Illegal byte sequence */ #define ERESTART 85 /* Interrupted system call should be restarted */ #define ESTRPIPE 86 /* Streams pipe error */ #define EUSERS 87 /* Too many users */ #define ENOTSOCK 88 /* Socket operation on non-socket */ #define EDESTADDRREQ 89 /* Destination address required */ #define EMSGSIZE 90 /* Message too long */ #define EPROTOTYPE 91 /* Protocol wrong type for socket */ #define ENOPROTOOPT 92 /* Protocol not available */ #define EPROTONOSUPPORT 93 /* Protocol not supported */ #define ESOCKTNOSUPPORT 94 /* Socket type not supported */ #define EOPNOTSUPP 95 /* Operation not supported on transport endpoint */ #define EPFNOSUPPORT 96 /* Protocol family not supported */ #define EAFNOSUPPORT 97 /* Address family not supported by protocol */ #define EADDRINUSE 98 /* Address already in use */ #define EADDRNOTAVAIL 99 /* Cannot assign requested address */ #define ENETDOWN 100 /* Network is down */ #define ENETUNREACH 101 /* Network is unreachable */ #define ENETRESET 102 /* Network dropped connection because of reset */ #define ECONNABORTED 103 /* Software caused connection abort */ #define ECONNRESET 104 /* Connection reset by peer */ #define ENOBUFS 105 /* No buffer space available */ #define EISCONN 106 /* Transport endpoint is already connected */ #define ENOTCONN 107 /* Transport endpoint is not connected */ #define ESHUTDOWN 108 /* Cannot send after transport endpoint shutdown */ #define ETOOMANYREFS 109 /* Too many references: cannot splice */ #define ETIMEDOUT 110 /* Connection timed out */ #define ECONNREFUSED 111 /* Connection refused */ #define EHOSTDOWN 112 /* Host is down */ #define EHOSTUNREACH 113 /* No route to host */ #define EALREADY 114 /* Operation already in progress */ #define EINPROGRESS 115 /* Operation now in progress */ #define ESTALE 116 /* Stale NFS file handle */ #define EUCLEAN 117 /* Structure needs cleaning */ #define ENOTNAM 118 /* Not a XENIX named type file */ #define ENAVAIL 119 /* No XENIX semaphores available */ #define EISNAM 120 /* Is a named type file */ #define EREMOTEIO 121 /* Remote I/O error */ #define EDQUOT 122 /* Quota exceeded */ #define ENOMEDIUM 123 /* No medium found */ #define EMEDIUMTYPE 124 /* Wrong medium type */ #define ECANCELED 125 /* Operation Canceled */ #define ENOKEY 126 /* Required key not available */ #define EKEYEXPIRED 127 /* Key has expired */ #define EKEYREVOKED 128 /* Key has been revoked */ #define EKEYREJECTED 129 /* Key was rejected by service */ /* for robust mutexes */ #define EOWNERDEAD 130 /* Owner died */ #define ENOTRECOVERABLE 131 /* State not recoverable */ #define ERFKILL 132 /* Operation not possible due to RF-kill */ #endif

Коды системных ошибок OS LINUX

ВСЕ КОДЫ ОШИБОК ОПЕРАЦИОННОЙ СИСТЕМЫ LINUX

EPERM 1 / * Операция не допускается * /
ENOENT 2 / * Нет такого файла или каталога * /
ESRCH 3 / * Нет такого процесса * /
EINTR 4 / * * Прерванный системный вызов /
EIO 5 / * I / O * ошибка /
ENXIO 6 / * Нет такого устройства или адреса * /
E2BIG 7 / * список аргументов слишком долго * /
ENOEXEC 8 / * Exec формате ошибки * /
EBADF 9 / * Плохо * номер файла /
ECHILD 10 / * Ни один ребенок процессов * /
EAGAIN 11 / * Попробуйте еще раз * /
ENOMEM 12 / * Из памяти * /
EACCES 13 / * Доступ запрещен * /
EFAULT 14 / * Плохой адрес * /
ENOTBLK 15 / * Блок устройства требуется * /
EBUSY 16 / * Устройство или ресурс занято * /
EEXIST 17 / * Файл существует * /
EXDEV 18 / * кросс-устройства ссылка * /
ENODEV 19 / * Нет такого устройства * /
ENOTDIR 20 / * Не каталога * /
EISDIR 21 / * Есть каталог * /
EINVAL 22 / * Неправильный аргумент * /
ENFILE 23 / * файл * Переполнение таблицы /
EMFILE 24 / * Слишком много открытых файлов * /
ENOTTY 25 / * Не пишущую машинку * /
ETXTBSY 26 / * Текстовый файл занят * /
EFBIG 27 / * Файл слишком большой * /
ENOSPC 28 / * Нет места на устройстве * /
ESPIPE 29 / * Незаконное искать * /
EROFS 30 / * только для чтения * файловой системы /
EMLINK 31 / * Слишком много ссылок * /
EPIPE 32 / * * Broken трубы /
EDOM 33 / * мат аргумента из области функции * /
ERANGE 34 / * мат результат не представляется * /

Код ошибки значение Описание
0 Действие завершено успешно.
1 Действие возвращается предупреждения.
67 Произошла фатальная ошибка во время установки.

ВТОРИЧНЫЙ ФАЙЛ ОТВЕТОВ КОДЫ ОШИБОК ПРИ УСТАНОВКЕ — КОД ОШИБКИ ЗНАЧЕНИЕ — ОПИСАНИЕ

3 Путь не был найден.
5 Отказано в доступе.
10 Среду произошла ошибка.
13 Недопустимые данные.
16 Создание DAS не удалось.
17 Создания экземпляра не удалось.
18 Создание базы данных не удалось.
19 Исправить изображение пакет находится на более низком уровне, чем установленного продукта.
20 Исправить изображение пакет на том же уровне, как установленного продукта. Существует ничего, чтобы обновить.
21 Есть не DB2 (R) продуктов, установленных на выбранное место. Существует ничего, чтобы обновить.
22 Для обновления уже установлен продукт DB2, используйте installFixPack команду вместо команды db2setup.
87 Один из параметров является ошибочным.
66 Установка была отменена пользователем.
74 Данные конфигурации повреждены. Обратитесь в службу поддержки.
76 Установочными файлами для этого продукта недоступен. Убедитесь, что источник существует и доступен.
82 Другая установка уже идет. Полное, что установка, прежде чем приступить к этой установки.
86 Существовал ошибка при открытии файла журнала установки. Убедитесь, что указанное место файла журнала и, что она доступна для записи.
96 Папка Temp переполнена или недоступны. Убедитесь, что папка Temp существует и что вы можете писать на нем.
97 Этот установочный пакет не поддерживается на этой платформе.
102 Другая версия этого продукта уже установлена. Установка этой версии не может продолжаться.
103 Неверный аргумент командной строки.
143 Система не имеет достаточно свободного места, чтобы продолжить установку.

Источник

131 Linux Error Codes for C Programming Language using errno

Programmers should handle all kinds of errors to protect the program from failure.

In C programming language, there is no direct support for error handling. You have to detect the failure and handle the error. In C programming language, return values represents success or failure. Inside a C program, when a function fails, you should handle the errors accordingly, or at least record the errors in a log file.

When you are running some program on Linux environment, you might notice that it gives some error number. For example, “Error no is : 17”, which doesn’t really say much. You really need to know what error number 17 means.

This article shows all available error numbers along with it descriptions. This article might be a handy reference for you, when you encounter an error number and you would like to know what it means.

• In C programming language, there is an external variable called “errno”.
• From this errno variable you can use some error handling functions to find out the error description and handle it appropriately.
• You have to include errno.h header file to use external variable errno.
• perror function prints error description in standard error.
• The strerror function returns a string describing the error code passed in the argument errnum.

The following C code snippet tries to open a file through open system call. There are two flags in the open call. O_CREAT flag is to create a file, if the file does not exist. O_EXCL flag is used with O_CREAT, if the file is already exist open call will fail with the proper error number.

At first execution, open got executed successfully, and it created the file since the file was not available. In next execution, it throws an error number 17, which is “File already exist”.

The following table shows list of error numbers and its descriptions in Linux operation system

ERROR CODE TABLE
Error number	Error Code	Error Description
1	EPERM	Operation not permitted
2	ENOENT	No such file or directory
3	ESRCH	No such process
4	EINTR	Interrupted system call
5	EIO	I/O error
6	ENXIO	No such device or address
7	E2BIG	Argument list too long
8	ENOEXEC	Exec format error
9	EBADF	Bad file number
10	ECHILD	No child processes
11	EAGAIN	Try again
12	ENOMEM	Out of memory
13	EACCES	Permission denied
14	EFAULT	Bad address
15	ENOTBLK	Block device required
16	EBUSY	Device or resource busy
17	EEXIST	File exists
18	EXDEV	Cross-device link
19	ENODEV	No such device
20	ENOTDIR	Not a directory
21	EISDIR	Is a directory
22	EINVAL	Invalid argument
23	ENFILE	File table overflow
24	EMFILE	Too many open files
25	ENOTTY	Not a typewriter
26	ETXTBSY	Text file busy
27	EFBIG	File too large
28	ENOSPC	No space left on device
29	ESPIPE	Illegal seek
30	EROFS	Read-only file system
31	EMLINK	Too many links
32	EPIPE	Broken pipe
33	EDOM	Math argument out of domain of func
34	ERANGE	Math result not representable
35	EDEADLK	Resource deadlock would occur
36	ENAMETOOLONG	File name too long
37	ENOLCK	No record locks available
38	ENOSYS	Function not implemented
39	ENOTEMPTY	Directory not empty
40	ELOOP	Too many symbolic links encountered
42	ENOMSG	No message of desired type
43	EIDRM	Identifier removed
44	ECHRNG	Channel number out of range
45	EL2NSYNC	Level 2 not synchronized
46	EL3HLT	Level 3 halted
47	EL3RST	Level 3 reset
48	ELNRNG	Link number out of range
49	EUNATCH	Protocol driver not attached
50	ENOCSI	No CSI structure available
51	EL2HLT	Level 2 halted
52	EBADE	Invalid exchange
53	EBADR	Invalid request descriptor
54	EXFULL	Exchange full
55	ENOANO	No anode
56	EBADRQC	Invalid request code
57	EBADSLT	Invalid slot
59	EBFONT	Bad font file format
60	ENOSTR	Device not a stream
61	ENODATA	No data available
62	ETIME	Timer expired
63	ENOSR	Out of streams resources
64	ENONET	Machine is not on the network
65	ENOPKG	Package not installed
66	EREMOTE	Object is remote
67	ENOLINK	Link has been severed
68	EADV	Advertise error
69	ESRMNT	Srmount error
70	ECOMM	Communication error on send
71	EPROTO	Protocol error
72	EMULTIHOP	Multihop attempted
73	EDOTDOT	RFS specific error
74	EBADMSG	Not a data message
75	EOVERFLOW	Value too large for defined data type
76	ENOTUNIQ	Name not unique on network
77	EBADFD	File descriptor in bad state
78	EREMCHG	Remote address changed
79	ELIBACC	Can not access a needed shared library
80	ELIBBAD	Accessing a corrupted shared library
81	ELIBSCN	.lib section in a.out corrupted
82	ELIBMAX	Attempting to link in too many shared libraries
83	ELIBEXEC	Cannot exec a shared library directly
84	EILSEQ	Illegal byte sequence
85	ERESTART	Interrupted system call should be restarted
86	ESTRPIPE	Streams pipe error
87	EUSERS	Too many users
88	ENOTSOCK	Socket operation on non-socket
89	EDESTADDRREQ	Destination address required
90	EMSGSIZE	Message too long
91	EPROTOTYPE	Protocol wrong type for socket
92	ENOPROTOOPT	Protocol not available
93	EPROTONOSUPPORT	Protocol not supported
94	ESOCKTNOSUPPORT	Socket type not supported
95	EOPNOTSUPP	Operation not supported on transport endpoint
96	EPFNOSUPPORT	Protocol family not supported
97	EAFNOSUPPORT	Address family not supported by protocol
98	EADDRINUSE	Address already in use
99	EADDRNOTAVAIL	Cannot assign requested address
100	ENETDOWN	Network is down
101	ENETUNREACH	Network is unreachable
102	ENETRESET	Network dropped connection because of reset
103	ECONNABORTED	Software caused connection abort
104	ECONNRESET	Connection reset by peer
105	ENOBUFS	No buffer space available
106	EISCONN	Transport endpoint is already connected
107	ENOTCONN	Transport endpoint is not connected
108	ESHUTDOWN	Cannot send after transport endpoint shutdown
109	ETOOMANYREFS	Too many references: cannot splice
110	ETIMEDOUT	Connection timed out
111	ECONNREFUSED	Connection refused
112	EHOSTDOWN	Host is down
113	EHOSTUNREACH	No route to host
114	EALREADY	Operation already in progress
115	EINPROGRESS	Operation now in progress
116	ESTALE	Stale NFS file handle
117	EUCLEAN	Structure needs cleaning
118	ENOTNAM	Not a XENIX named type file
119	ENAVAIL	No XENIX semaphores available
120	EISNAM	Is a named type file
121	EREMOTEIO	Remote I/O error
122	EDQUOT	Quota exceeded
123	ENOMEDIUM	No medium found
124	EMEDIUMTYPE	Wrong medium type
125	ECANCELED	Operation Canceled
126	ENOKEY	Required key not available
127	EKEYEXPIRED	Key has expired
128	EKEYREVOKED	Key has been revoked
129	EKEYREJECTED	Key was rejected by service
130	EOWNERDEAD	Owner died
131	ENOTRECOVERABLE	State not recoverable

When you see an error number thrown by a C program on a Linux environment, you might find the above table handy to identify what those error number means. Make sure to bookmark this article for future reference.

Источник

System error codes linux

The error code macros are defined in the header file errno.h . All of them expand into integer constant values. Some of these error codes can’t occur on GNU systems, but they can occur using the GNU C Library on other systems.

Macro: int EPERM ¶

“Operation not permitted.” Only the owner of the file (or other resource) or processes with special privileges can perform the operation.

Macro: int ENOENT ¶

“No such file or directory.” This is a “file doesn’t exist” error for ordinary files that are referenced in contexts where they are expected to already exist.

Macro: int ESRCH ¶

“No such process.” No process matches the specified process ID.

Macro: int EINTR ¶

“Interrupted system call.” An asynchronous signal occurred and prevented completion of the call. When this happens, you should try the call again.

You can choose to have functions resume after a signal that is handled, rather than failing with EINTR ; see Primitives Interrupted by Signals.

Macro: int EIO ¶

“Input/output error.” Usually used for physical read or write errors.

Macro: int ENXIO ¶

“No such device or address.” The system tried to use the device represented by a file you specified, and it couldn’t find the device. This can mean that the device file was installed incorrectly, or that the physical device is missing or not correctly attached to the computer.

Macro: int E2BIG ¶

“Argument list too long.” Used when the arguments passed to a new program being executed with one of the exec functions (see Executing a File) occupy too much memory space. This condition never arises on GNU/Hurd systems.

Macro: int ENOEXEC ¶

“Exec format error.” Invalid executable file format. This condition is detected by the exec functions; see Executing a File.

Macro: int EBADF ¶

“Bad file descriptor.” For example, I/O on a descriptor that has been closed or reading from a descriptor open only for writing (or vice versa).

Macro: int ECHILD ¶

“No child processes.” This error happens on operations that are supposed to manipulate child processes, when there aren’t any processes to manipulate.

Macro: int EDEADLK ¶

“Resource deadlock avoided.” Allocating a system resource would have resulted in a deadlock situation. The system does not guarantee that it will notice all such situations. This error means you got lucky and the system noticed; it might just hang. See File Locks, for an example.

Macro: int ENOMEM ¶

“Cannot allocate memory.” The system cannot allocate more virtual memory because its capacity is full.

Macro: int EACCES ¶

“Permission denied.” The file permissions do not allow the attempted operation.

Macro: int EFAULT ¶

“Bad address.” An invalid pointer was detected. On GNU/Hurd systems, this error never happens; you get a signal instead.

Macro: int ENOTBLK ¶

“Block device required.” A file that isn’t a block special file was given in a situation that requires one. For example, trying to mount an ordinary file as a file system in Unix gives this error.

Macro: int EBUSY ¶

“Device or resource busy.” A system resource that can’t be shared is already in use. For example, if you try to delete a file that is the root of a currently mounted filesystem, you get this error.

Macro: int EEXIST ¶

“File exists.” An existing file was specified in a context where it only makes sense to specify a new file.

Macro: int EXDEV ¶

“Invalid cross-device link.” An attempt to make an improper link across file systems was detected. This happens not only when you use link (see Hard Links) but also when you rename a file with rename (see Renaming Files).

Macro: int ENODEV ¶

“No such device.” The wrong type of device was given to a function that expects a particular sort of device.

Macro: int ENOTDIR ¶

“Not a directory.” A file that isn’t a directory was specified when a directory is required.

Macro: int EISDIR ¶

“Is a directory.” You cannot open a directory for writing, or create or remove hard links to it.

Macro: int EINVAL ¶

“Invalid argument.” This is used to indicate various kinds of problems with passing the wrong argument to a library function.

Macro: int EMFILE ¶

“Too many open files.” The current process has too many files open and can’t open any more. Duplicate descriptors do count toward this limit.

In BSD and GNU, the number of open files is controlled by a resource limit that can usually be increased. If you get this error, you might want to increase the RLIMIT_NOFILE limit or make it unlimited; see Limiting Resource Usage.

Macro: int ENFILE ¶

“Too many open files in system.” There are too many distinct file openings in the entire system. Note that any number of linked channels count as just one file opening; see Linked Channels. This error never occurs on GNU/Hurd systems.

Macro: int ENOTTY ¶

“Inappropriate ioctl for device.” Inappropriate I/O control operation, such as trying to set terminal modes on an ordinary file.

Macro: int ETXTBSY ¶

“Text file busy.” An attempt to execute a file that is currently open for writing, or write to a file that is currently being executed. Often using a debugger to run a program is considered having it open for writing and will cause this error. (The name stands for “text file busy”.) This is not an error on GNU/Hurd systems; the text is copied as necessary.

Macro: int EFBIG ¶

“File too large.” The size of a file would be larger than allowed by the system.

Macro: int ENOSPC ¶

“No space left on device.” Write operation on a file failed because the disk is full.

Macro: int ESPIPE ¶

“Illegal seek.” Invalid seek operation (such as on a pipe).

Macro: int EROFS ¶

“Read-only file system.” An attempt was made to modify something on a read-only file system.

Macro: int EMLINK ¶

“Too many links.” The link count of a single file would become too large. rename can cause this error if the file being renamed already has as many links as it can take (see Renaming Files).

Macro: int EPIPE ¶

“Broken pipe.” There is no process reading from the other end of a pipe. Every library function that returns this error code also generates a SIGPIPE signal; this signal terminates the program if not handled or blocked. Thus, your program will never actually see EPIPE unless it has handled or blocked SIGPIPE .

Macro: int EDOM ¶

“Numerical argument out of domain.” Used by mathematical functions when an argument value does not fall into the domain over which the function is defined.

Macro: int ERANGE ¶

“Numerical result out of range.” Used by mathematical functions when the result value is not representable because of overflow or underflow.

Macro: int EAGAIN ¶

“Resource temporarily unavailable.” The call might work if you try again later. The macro EWOULDBLOCK is another name for EAGAIN ; they are always the same in the GNU C Library.

This error can happen in a few different situations:

An operation that would block was attempted on an object that has non-blocking mode selected. Trying the same operation again will block until some external condition makes it possible to read, write, or connect (whatever the operation). You can use select to find out when the operation will be possible; see Waiting for Input or Output.

Portability Note: In many older Unix systems, this condition was indicated by EWOULDBLOCK , which was a distinct error code different from EAGAIN . To make your program portable, you should check for both codes and treat them the same.

A temporary resource shortage made an operation impossible. fork can return this error. It indicates that the shortage is expected to pass, so your program can try the call again later and it may succeed. It is probably a good idea to delay for a few seconds before trying it again, to allow time for other processes to release scarce resources. Such shortages are usually fairly serious and affect the whole system, so usually an interactive program should report the error to the user and return to its command loop.

Macro: intEWOULDBLOCK¶

“Operation would block.” In the GNU C Library, this is another name for EAGAIN (above). The values are always the same, on every operating system.

C libraries in many older Unix systems have EWOULDBLOCK as a separate error code.

Macro: int EINPROGRESS ¶

“Operation now in progress.” An operation that cannot complete immediately was initiated on an object that has non-blocking mode selected. Some functions that must always block (such as connect ; see Making a Connection) never return EAGAIN . Instead, they return EINPROGRESS to indicate that the operation has begun and will take some time. Attempts to manipulate the object before the call completes return EALREADY . You can use the select function to find out when the pending operation has completed; see Waiting for Input or Output.

Macro: int EALREADY ¶

“Operation already in progress.” An operation is already in progress on an object that has non-blocking mode selected.

Macro: int ENOTSOCK ¶

“Socket operation on non-socket.” A file that isn’t a socket was specified when a socket is required.

Macro: int EMSGSIZE ¶

“Message too long.” The size of a message sent on a socket was larger than the supported maximum size.

Macro: int EPROTOTYPE ¶

“Protocol wrong type for socket.” The socket type does not support the requested communications protocol.

Macro: int ENOPROTOOPT ¶

“Protocol not available.” You specified a socket option that doesn’t make sense for the particular protocol being used by the socket. See Socket Options.

Macro: int EPROTONOSUPPORT ¶

“Protocol not supported.” The socket domain does not support the requested communications protocol (perhaps because the requested protocol is completely invalid). See Creating a Socket.

Macro: int ESOCKTNOSUPPORT ¶

“Socket type not supported.” The socket type is not supported.

Macro: int EOPNOTSUPP ¶

“Operation not supported.” The operation you requested is not supported. Some socket functions don’t make sense for all types of sockets, and others may not be implemented for all communications protocols. On GNU/Hurd systems, this error can happen for many calls when the object does not support the particular operation; it is a generic indication that the server knows nothing to do for that call.

Macro: int EPFNOSUPPORT ¶

“Protocol family not supported.” The socket communications protocol family you requested is not supported.

Macro: int EAFNOSUPPORT ¶

“Address family not supported by protocol.” The address family specified for a socket is not supported; it is inconsistent with the protocol being used on the socket. See Sockets.

Macro: int EADDRINUSE ¶

“Address already in use.” The requested socket address is already in use. See Socket Addresses.

Macro: int EADDRNOTAVAIL ¶

“Cannot assign requested address.” The requested socket address is not available; for example, you tried to give a socket a name that doesn’t match the local host name. See Socket Addresses.

Macro: int ENETDOWN ¶

“Network is down.” A socket operation failed because the network was down.

Macro: int ENETUNREACH ¶

“Network is unreachable.” A socket operation failed because the subnet containing the remote host was unreachable.

Macro: int ENETRESET ¶

“Network dropped connection on reset.” A network connection was reset because the remote host crashed.

Macro: int ECONNABORTED ¶

“Software caused connection abort.” A network connection was aborted locally.

Macro: int ECONNRESET ¶

“Connection reset by peer.” A network connection was closed for reasons outside the control of the local host, such as by the remote machine rebooting or an unrecoverable protocol violation.

Macro: int ENOBUFS ¶

“No buffer space available.” The kernel’s buffers for I/O operations are all in use. In GNU, this error is always synonymous with ENOMEM ; you may get one or the other from network operations.

Macro: int EISCONN ¶

“Transport endpoint is already connected.” You tried to connect a socket that is already connected. See Making a Connection.

Macro: int ENOTCONN ¶

“Transport endpoint is not connected.” The socket is not connected to anything. You get this error when you try to transmit data over a socket, without first specifying a destination for the data. For a connectionless socket (for datagram protocols, such as UDP), you get EDESTADDRREQ instead.

Macro: int EDESTADDRREQ ¶

“Destination address required.” No default destination address was set for the socket. You get this error when you try to transmit data over a connectionless socket, without first specifying a destination for the data with connect .

Macro: int ESHUTDOWN ¶

“Cannot send after transport endpoint shutdown.” The socket has already been shut down.

Macro: int ETOOMANYREFS ¶

“Too many references: cannot splice.”

Macro: int ETIMEDOUT ¶

“Connection timed out.” A socket operation with a specified timeout received no response during the timeout period.

Macro: int ECONNREFUSED ¶

“Connection refused.” A remote host refused to allow the network connection (typically because it is not running the requested service).

Macro: int ELOOP ¶

“Too many levels of symbolic links.” Too many levels of symbolic links were encountered in looking up a file name. This often indicates a cycle of symbolic links.

Macro: int ENAMETOOLONG ¶

“File name too long.” Filename too long (longer than PATH_MAX ; see Limits on File System Capacity) or host name too long (in gethostname or sethostname ; see Host Identification).

Macro: int EHOSTDOWN ¶

“Host is down.” The remote host for a requested network connection is down.

Macro: int EHOSTUNREACH ¶

“No route to host.” The remote host for a requested network connection is not reachable.

Macro: int ENOTEMPTY ¶

“Directory not empty.” Directory not empty, where an empty directory was expected. Typically, this error occurs when you are trying to delete a directory.

Macro: int EPROCLIM ¶

“Too many processes.” This means that the per-user limit on new process would be exceeded by an attempted fork . See Limiting Resource Usage, for details on the RLIMIT_NPROC limit.

Macro: int EUSERS ¶

“Too many users.” The file quota system is confused because there are too many users.

Macro: int EDQUOT ¶

“Disk quota exceeded.” The user’s disk quota was exceeded.

Macro: int ESTALE ¶

“Stale file handle.” This indicates an internal confusion in the file system which is due to file system rearrangements on the server host for NFS file systems or corruption in other file systems. Repairing this condition usually requires unmounting, possibly repairing and remounting the file system.

Macro: int EREMOTE ¶

“Object is remote.” An attempt was made to NFS-mount a remote file system with a file name that already specifies an NFS-mounted file. (This is an error on some operating systems, but we expect it to work properly on GNU/Hurd systems, making this error code impossible.)

Macro: int EBADRPC ¶

“RPC struct is bad.”

Macro: int ERPCMISMATCH ¶

“RPC version wrong.”

Macro: int EPROGUNAVAIL ¶

“RPC program not available.”

Macro: int EPROGMISMATCH ¶

“RPC program version wrong.”

Macro: int EPROCUNAVAIL ¶

“RPC bad procedure for program.”

Macro: int ENOLCK ¶

“No locks available.” This is used by the file locking facilities; see File Locks. This error is never generated by GNU/Hurd systems, but it can result from an operation to an NFS server running another operating system.

Macro: int EFTYPE ¶

“Inappropriate file type or format.” The file was the wrong type for the operation, or a data file had the wrong format.

On some systems chmod returns this error if you try to set the sticky bit on a non-directory file; see Assigning File Permissions.

Macro: int EAUTH ¶

Macro: int ENEEDAUTH ¶

Macro: int ENOSYS ¶

“Function not implemented.” This indicates that the function called is not implemented at all, either in the C library itself or in the operating system. When you get this error, you can be sure that this particular function will always fail with ENOSYS unless you install a new version of the C library or the operating system.

Macro: int ELIBEXEC ¶

“Cannot exec a shared library directly.”

Macro: int ENOTSUP ¶

“Not supported.” A function returns this error when certain parameter values are valid, but the functionality they request is not available. This can mean that the function does not implement a particular command or option value or flag bit at all. For functions that operate on some object given in a parameter, such as a file descriptor or a port, it might instead mean that only that specific object (file descriptor, port, etc.) is unable to support the other parameters given; different file descriptors might support different ranges of parameter values.

If the entire function is not available at all in the implementation, it returns ENOSYS instead.

Macro: int EILSEQ ¶

“Invalid or incomplete multibyte or wide character.” While decoding a multibyte character the function came along an invalid or an incomplete sequence of bytes or the given wide character is invalid.

Macro: int EBACKGROUND ¶

“Inappropriate operation for background process.” On GNU/Hurd systems, servers supporting the term protocol return this error for certain operations when the caller is not in the foreground process group of the terminal. Users do not usually see this error because functions such as read and write translate it into a SIGTTIN or SIGTTOU signal. See Job Control, for information on process groups and these signals.

Macro: int EDIED ¶

“Translator died.” On GNU/Hurd systems, opening a file returns this error when the file is translated by a program and the translator program dies while starting up, before it has connected to the file.

Macro: int ED ¶

“?.” The experienced user will know what is wrong.

Macro: int EGREGIOUS ¶

“You really blew it this time.” You did what?

Macro: int EIEIO ¶

“Computer bought the farm.” Go home and have a glass of warm, dairy-fresh milk.

Macro: int EGRATUITOUS ¶

“Gratuitous error.” This error code has no purpose.

Macro: int EBADMSG ¶

Macro: int EIDRM ¶

Macro: int EMULTIHOP ¶

Macro: int ENODATA ¶

“No data available.”

Macro: int ENOLINK ¶

“Link has been severed.”

Macro: int ENOMSG ¶

“No message of desired type.”

Macro: int ENOSR ¶

“Out of streams resources.”

Macro: int ENOSTR ¶

“Device not a stream.”

Macro: int EOVERFLOW ¶

“Value too large for defined data type.”

Macro: int EPROTO ¶

Macro: int ETIME ¶

Macro: int ECANCELED ¶

“Operation canceled.” An asynchronous operation was canceled before it completed. See Perform I/O Operations in Parallel. When you call aio_cancel , the normal result is for the operations affected to complete with this error; see Cancellation of AIO Operations.

Macro: int EOWNERDEAD ¶

Macro: int ENOTRECOVERABLE ¶

“State not recoverable.”

The following error codes are defined by the Linux/i386 kernel. They are not yet documented.

Macro: int ERESTART ¶

“Interrupted system call should be restarted.”

Macro: int ECHRNG ¶

“Channel number out of range.”

Macro: int EL2NSYNC ¶

“Level 2 not synchronized.”

Macro: int EL3HLT ¶

Macro: int EL3RST ¶

Macro: int ELNRNG ¶

“Link number out of range.”

Macro: int EUNATCH ¶

“Protocol driver not attached.”

Macro: int ENOCSI ¶

“No CSI structure available.”

Macro: int EL2HLT ¶

Macro: int EBADE ¶

Macro: int EBADR ¶

“Invalid request descriptor.”

Macro: int EXFULL ¶

Macro: int ENOANO ¶

Macro: int EBADRQC ¶

“Invalid request code.”

Macro: int EBADSLT ¶

Macro: int EDEADLOCK ¶

“File locking deadlock error.”

Macro: int EBFONT ¶

“Bad font file format.”

Macro: int ENONET ¶

“Machine is not on the network.”

Macro: int ENOPKG ¶

“Package not installed.”

Macro: int EADV ¶

Macro: int ESRMNT ¶

Macro: int ECOMM ¶

“Communication error on send.”

Macro: int EDOTDOT ¶

“RFS specific error.”

Macro: int ENOTUNIQ ¶

“Name not unique on network.”

Macro: int EBADFD ¶

“File descriptor in bad state.”

Macro: int EREMCHG ¶

“Remote address changed.”

Macro: int ELIBACC ¶

“Can not access a needed shared library.”

Macro: int ELIBBAD ¶

“Accessing a corrupted shared library.”

Macro: int ELIBSCN ¶

“.lib section in a.out corrupted.”

Macro: int ELIBMAX ¶

“Attempting to link in too many shared libraries.”

Macro: int ESTRPIPE ¶

“Streams pipe error.”

Macro: int EUCLEAN ¶

“Structure needs cleaning.”

Macro: int ENOTNAM ¶

“Not a XENIX named type file.”

Macro: int ENAVAIL ¶

“No XENIX semaphores available.”

Macro: int EISNAM ¶

“Is a named type file.”

Macro: int EREMOTEIO ¶

“Remote I/O error.”

Macro: int ENOMEDIUM ¶

“No medium found.”

Macro: int EMEDIUMTYPE ¶

“Wrong medium type.”

Macro: int ENOKEY ¶

“Required key not available.”

Macro: int EKEYEXPIRED ¶

“Key has expired.”

Macro: int EKEYREVOKED ¶

“Key has been revoked.”

Macro: int EKEYREJECTED ¶

“Key was rejected by service.”

Macro: int ERFKILL ¶

“Operation not possible due to RF-kill.”

Macro: int EHWPOISON ¶

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Programmers should handle all kinds of errors to protect the program from failure.

In C programming language, there is no direct support for error handling. You have to detect the failure and handle the error. In C programming language, return values represents success or failure. Inside a C program, when a function fails, you should handle the errors accordingly, or at least record the errors in a log file.

When you are running some program on Linux environment, you might notice that it gives some error number. For example, “Error no is : 17”, which doesn’t really say much. You really need to know what error number 17 means.

This article shows all available error numbers along with it descriptions. This article might be a handy reference for you, when you encounter an error number and you would like to know what it means.

• In C programming language, there is an external variable called “errno”.
• From this errno variable you can use some error handling functions to find out the error description and handle it appropriately.
• You have to include errno.h header file to use external variable errno.
• perror function prints error description in standard error.
• The strerror function returns a string describing the error code passed in the argument errnum.

The following C code snippet tries to open a file through open system call. There are two flags in the open call. O_CREAT flag is to create a file, if the file does not exist. O_EXCL flag is used with O_CREAT, if the file is already exist open call will fail with the proper error number.

$ cat fileopen.c
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
main()
{
// Declaration of a file descriptor
int fd;

// Opening a file
fd = open("/root/sasikala/testing",O_CREAT|O_EXCL);
// If Open is failed
if ( fd < 0 ) {
        printf("Opening file : Failedn");
        printf ("Error no is : %dn", errno);
        printf("Error description is : %sn",strerror(errno));
}
// If Open is success
else
        printf("Opening file : Successn");

}

$ cc -o fileopen fileopen.c
$ ./fileopen

Opening file : Success

$ ./fileopen
Opening file : Failed
Error no is : 17
Error description is : File exists

At first execution, open got executed successfully, and it created the file since the file was not available. In next execution, it throws an error number 17, which is “File already exist”.

The following table shows list of error numbers and its descriptions in Linux operation system

ERROR CODE TABLE
Error number	Error Code	Error Description
1	EPERM	Operation not permitted
2	ENOENT	No such file or directory
3	ESRCH	No such process
4	EINTR	Interrupted system call
5	EIO	I/O error
6	ENXIO	No such device or address
7	E2BIG	Argument list too long
8	ENOEXEC	Exec format error
9	EBADF	Bad file number
10	ECHILD	No child processes
11	EAGAIN	Try again
12	ENOMEM	Out of memory
13	EACCES	Permission denied
14	EFAULT	Bad address
15	ENOTBLK	Block device required
16	EBUSY	Device or resource busy
17	EEXIST	File exists
18	EXDEV	Cross-device link
19	ENODEV	No such device
20	ENOTDIR	Not a directory
21	EISDIR	Is a directory
22	EINVAL	Invalid argument
23	ENFILE	File table overflow
24	EMFILE	Too many open files
25	ENOTTY	Not a typewriter
26	ETXTBSY	Text file busy
27	EFBIG	File too large
28	ENOSPC	No space left on device
29	ESPIPE	Illegal seek
30	EROFS	Read-only file system
31	EMLINK	Too many links
32	EPIPE	Broken pipe
33	EDOM	Math argument out of domain of func
34	ERANGE	Math result not representable
35	EDEADLK	Resource deadlock would occur
36	ENAMETOOLONG	File name too long
37	ENOLCK	No record locks available
38	ENOSYS	Function not implemented
39	ENOTEMPTY	Directory not empty
40	ELOOP	Too many symbolic links encountered
42	ENOMSG	No message of desired type
43	EIDRM	Identifier removed
44	ECHRNG	Channel number out of range
45	EL2NSYNC	Level 2 not synchronized
46	EL3HLT	Level 3 halted
47	EL3RST	Level 3 reset
48	ELNRNG	Link number out of range
49	EUNATCH	Protocol driver not attached
50	ENOCSI	No CSI structure available
51	EL2HLT	Level 2 halted
52	EBADE	Invalid exchange
53	EBADR	Invalid request descriptor
54	EXFULL	Exchange full
55	ENOANO	No anode
56	EBADRQC	Invalid request code
57	EBADSLT	Invalid slot
59	EBFONT	Bad font file format
60	ENOSTR	Device not a stream
61	ENODATA	No data available
62	ETIME	Timer expired
63	ENOSR	Out of streams resources
64	ENONET	Machine is not on the network
65	ENOPKG	Package not installed
66	EREMOTE	Object is remote
67	ENOLINK	Link has been severed
68	EADV	Advertise error
69	ESRMNT	Srmount error
70	ECOMM	Communication error on send
71	EPROTO	Protocol error
72	EMULTIHOP	Multihop attempted
73	EDOTDOT	RFS specific error
74	EBADMSG	Not a data message
75	EOVERFLOW	Value too large for defined data type
76	ENOTUNIQ	Name not unique on network
77	EBADFD	File descriptor in bad state
78	EREMCHG	Remote address changed
79	ELIBACC	Can not access a needed shared library
80	ELIBBAD	Accessing a corrupted shared library
81	ELIBSCN	.lib section in a.out corrupted
82	ELIBMAX	Attempting to link in too many shared libraries
83	ELIBEXEC	Cannot exec a shared library directly
84	EILSEQ	Illegal byte sequence
85	ERESTART	Interrupted system call should be restarted
86	ESTRPIPE	Streams pipe error
87	EUSERS	Too many users
88	ENOTSOCK	Socket operation on non-socket
89	EDESTADDRREQ	Destination address required
90	EMSGSIZE	Message too long
91	EPROTOTYPE	Protocol wrong type for socket
92	ENOPROTOOPT	Protocol not available
93	EPROTONOSUPPORT	Protocol not supported
94	ESOCKTNOSUPPORT	Socket type not supported
95	EOPNOTSUPP	Operation not supported on transport endpoint
96	EPFNOSUPPORT	Protocol family not supported
97	EAFNOSUPPORT	Address family not supported by protocol
98	EADDRINUSE	Address already in use
99	EADDRNOTAVAIL	Cannot assign requested address
100	ENETDOWN	Network is down
101	ENETUNREACH	Network is unreachable
102	ENETRESET	Network dropped connection because of reset
103	ECONNABORTED	Software caused connection abort
104	ECONNRESET	Connection reset by peer
105	ENOBUFS	No buffer space available
106	EISCONN	Transport endpoint is already connected
107	ENOTCONN	Transport endpoint is not connected
108	ESHUTDOWN	Cannot send after transport endpoint shutdown
109	ETOOMANYREFS	Too many references: cannot splice
110	ETIMEDOUT	Connection timed out
111	ECONNREFUSED	Connection refused
112	EHOSTDOWN	Host is down
113	EHOSTUNREACH	No route to host
114	EALREADY	Operation already in progress
115	EINPROGRESS	Operation now in progress
116	ESTALE	Stale NFS file handle
117	EUCLEAN	Structure needs cleaning
118	ENOTNAM	Not a XENIX named type file
119	ENAVAIL	No XENIX semaphores available
120	EISNAM	Is a named type file
121	EREMOTEIO	Remote I/O error
122	EDQUOT	Quota exceeded
123	ENOMEDIUM	No medium found
124	EMEDIUMTYPE	Wrong medium type
125	ECANCELED	Operation Canceled
126	ENOKEY	Required key not available
127	EKEYEXPIRED	Key has expired
128	EKEYREVOKED	Key has been revoked
129	EKEYREJECTED	Key was rejected by service
130	EOWNERDEAD	Owner died
131	ENOTRECOVERABLE	State not recoverable

When you see an error number thrown by a C program on a Linux environment, you might find the above table handy to identify what those error number means. Make sure to bookmark this article for future reference.