Linux错误代码含义

首先在自己的程序中#include

添加打印errno的语句 printf("errno is: %d\n",errno);

根据errno的值查错。

perror("xxxx")；//会将错误信息打印出来，

printf("%m")

printf("%s",strerror(errno));  //这两个也可以将错误码打印出来

linux内核4.9版本中在这两个文件下定义

include/uapi/asm-generic/errno-base.h

include/uapi/asm-generic/errno.h

常用linux错误代码含义，如下表所示：

名称	值	描述
EPERM	1	操作不允许
ENOENT	2	无此文件或目录
ESRCH	3	无此进程
EINTR	4	中断系统调用
EIO	5	I/O 错误
ENXIO	6	无此设备或地址
E2BIG	7	参数列表过长
ENOEXEC	8	执行文件错误
EBADF	9	错误的文件数
ECHILD	10	无子进程
EAGAIN	11	再尝试一下
ENOMEM	12	内存溢出
EACCES	13	要求被否定
EFAULT	14	错误地址
ENOTBLK	15	块设备请求
EBUSY	16	设备或者资源忙
EEXIST	17	文件存在
EXDEV	18	Cross-device link
ENODEV	19	无此设备
ENOTDIR	20	不是一个目录文件
EISDIR	21	I是一个目录文件
EINVAL	22	无效的参数
ENFILE	23	文件表溢出
EMFILE	24	打开文件过多
ENOTTY	25	不是一个TTY设备
ETXTBSY	26	文件忙
EFBIG	27	文件过大
ENOSPC	28	此设备上没有空间了
ESPIPE	29	无效的偏移
EROFS	30	只读文件系统
EMLINK	31	链接过多
EPIPE	32	错误的管道
EDOM	33	Math argument out of domain
ERANGE	34	Math result not representable
EDEADLK	35	Resource deadlock would occur
ENAMETOOLONG	36	文件名过长
ENOLCK	37	No record locks available
ENOSYS	38	函数没有实现
ENOTEMPTY	39	目录非空
ELOOP	40	Too many symbolic links encountered
EWOULDBLOCK	41	Same as EAGAIN
ENOMSG	42	No message of desired type
EIDRM	43	Identifier removed
ECHRNG	44	Channel number out of range
EL2NSYNC	45	Level 2 not synchronized
EL3HLT	46	Level 3 halted
EL3RST	47	Level 3 reset
ELNRNG	48	Link number out of range
EUNATCH	49	Protocol driver not attached
ENOCSI	50	No CSI structure available
EL2HLT	51	Level 2 halted
EBADE	52	Invalid exchange
EBADR	53	Invalid request descriptor
EXFULL	54	Exchange full
ENOANO	55	No anode
EBADRQC	56	Invalid request code
EBADSLT	57	Invalid slot
EDEADLOCK	58	Same as EDEADLK
EBFONT	59	Bad font file format
ENOSTR	60	Device not a stream
ENODATA	61	No data available
ETIME	62	Timer expired
ENOSR	63	Out of streams resources
ENONET	64	Machine is not on the network
ENOPKG	65	Package not installed
EREMOTE	66	Object is remote
ENOLINK	67	Link has been severed
EADV	68	Advertise error
ESRMNT	69	Srmount error
ECOMM	70	Communication error on send
EPROTO	71	Protocol error
EMULTIHOP	72	Multihop attempted
EDOTDOT	73	RFS specific error
EBADMSG	74	Not a data message
EOVERFLOW	75	Value too large for defined data type
ENOTUNIQ	76	Name not unique on network
EBADFD	77	File descriptor in bad state
EREMCHG	78	Remote address changed
ELIBACC	79	Cannot access a needed shared library
ELIBBAD	80	Accessing a corrupted shared library
ELIBSCN	81	A .lib section in an .out is corrupted
ELIBMAX	82	Linking in too many shared libraries
ELIBEXEC	83	Cannot exec a shared library directly
EILSEQ	84	Illegal byte sequence
ERESTART	85	Interrupted system call should be restarted
ESTRPIPE	86	Streams pipe error
EUSERS	87	Too many users
ENOTSOCK	88	Socket operation on non-socket
EDESTADDRREQ	89	Destination address required
EMSGSIZE	90	Message too long
EPROTOTYPE	91	Protocol wrong type for socket
ENOPROTOOPT	92	Protocol not available
EPROTONOSUPPORT	93	Protocol not supported
ESOCKTNOSUPPORT	94	Socket type not supported
EOPNOTSUPP	95	Operation not supported on transport
EPFNOSUPPORT	96	Protocol family not supported
EAFNOSUPPORT	97	Address family not supported by protocol
EADDRINUSE	98	Address already in use
EADDRNOTAVAIL	99	Cannot assign requested address
ENETDOWN	100	Network is down
ENETUNREACH	101	Network is unreachable
ENETRESET	102	Network dropped
ECONNABORTED	103	Software caused connection
ECONNRESET	104	Connection reset by
ENOBUFS	105	No buffer space available
EISCONN	106	Transport endpoint
ENOTCONN	107	Transport endpoint
ESHUTDOWN	108	Cannot send after transport
ETOOMANYREFS	109	Too many references
ETIMEDOUT	110	Connection timed
ECONNREFUSED	111	Connection refused
EHOSTDOWN	112	Host is down
EHOSTUNREACH	113	No route to host
EALREADY	114	Operation already
EINPROGRESS	115	Operation now in
ESTALE	116	Stale NFS file handle
EUCLEAN	117	Structure needs cleaning
ENOTNAM	118	Not a XENIX-named
ENAVAIL	119	No XENIX semaphores
EISNAM	120	Is a named type file
EREMOTEIO	121	Remote I/O error
EDQUOT	122	Quota exceeded
ENOMEDIUM	123	No medium found
EMEDIUMTYPE	124	Wrong medium type

errno0 :     Success

errno1 :     Operation not permitted

errno2 :     No such file or directory

errno3 :     No such process

errno4 :     Interrupted system call

errno5 :     Input/output error

errno6 :     No such device or address

errno7 :     Argument list too long

errno8 :     Exec format error

errno9 :     Bad file descriptor

errno10 :    No child processes

errno11 :    Resource temporarily unavailable

errno12 :    Cannot allocate memory

errno13 :    Permission denied

errno14 :    Bad address

errno15 :    Block device required

errno16 :    Device or resource busy

errno17 :    File exists

errno18 :    Invalid cross-device link

errno19 :    No such device

errno20 :    Not a directory

errno21 :    Is a directory

errno22 :    Invalid argument

errno23 :    Too many open files in system

errno24 :    Too many open files

errno25 :    Inappropriate ioctl for device

errno26 :    Text file busy

errno27 :    File too large

errno28 :    No space left on device

errno29 :    Illegal seek

errno30 :    Read-only file system

errno31 :    Too many links

errno32 :    Broken pipe