c语言所有的errno枚举值含义

可以通过以下代码，获取所有的错误码信息：

#include <string.h> /* for strerror */
#include <errno.h>
#include <stdio.h>

int main(int argc, char ** argv)
{
    int i = 0;
    for(i = 0; i < 256; i++)
        printf("errno-%02d is: %s\n", i, strerror(i));
    return 0;
}

编译此程序用命令：

gcc -Wall strerror.c

执行程序：

./a.out

输出如下：

errno-00 is: Success

errno-01 is: Operation not permitted

errno-02 is: No such file or directory

errno-03 is: No such process

errno-04 is: Interrupted system call

errno-05 is: Input/output error

errno-06 is: No such device or address

errno-07 is: Argument list too long

errno-08 is: Exec format error

errno-09 is: Bad file descriptor

errno-10 is: No child processes

errno-11 is: Resource temporarily unavailable

errno-12 is: Cannot allocate memory

errno-13 is: Permission denied

errno-14 is: Bad address

errno-15 is: Block device required

errno-16 is: Device or resource busy

errno-17 is: File exists

errno-18 is: Invalid cross-device link

errno-19 is: No such device

errno-20 is: Not a directory

errno-21 is: Is a directory

errno-22 is: Invalid argument

errno-23 is: Too many open files in system

errno-24 is: Too many open files

errno-25 is: Inappropriate ioctl for device

errno-26 is: Text file busy

errno-27 is: File too large

errno-28 is: No space left on device

errno-29 is: Illegal seek

errno-30 is: Read-only file system

errno-31 is: Too many links

errno-32 is: Broken pipe

errno-33 is: Numerical argument out of domain

errno-34 is: Numerical result out of range

errno-35 is: Resource deadlock avoided

errno-36 is: File name too long

errno-37 is: No locks available

errno-38 is: Function not implemented

errno-39 is: Directory not empty

errno-40 is: Too many levels of symbolic links

errno-41 is: Unknown error 41

errno-42 is: No message of desired type

errno-43 is: Identifier removed

errno-44 is: Channel number out of range

errno-45 is: Level 2 not synchronized

errno-46 is: Level 3 halted

errno-47 is: Level 3 reset

errno-48 is: Link number out of range

errno-49 is: Protocol driver not attached

errno-50 is: No CSI structure available

errno-51 is: Level 2 halted

errno-52 is: Invalid exchange

errno-53 is: Invalid request descriptor

errno-54 is: Exchange full

errno-55 is: No anode

errno-56 is: Invalid request code

errno-57 is: Invalid slot

errno-58 is: Unknown error 58

errno-59 is: Bad font file format

errno-60 is: Device not a stream

errno-61 is: No data available

errno-62 is: Timer expired

errno-63 is: Out of streams resources

errno-64 is: Machine is not on the network

errno-65 is: Package not installed

errno-66 is: Object is remote

errno-67 is: Link has been severed

errno-68 is: Advertise error

errno-69 is: Srmount error

errno-70 is: Communication error on send

errno-71 is: Protocol error

errno-72 is: Multihop attempted

errno-73 is: RFS specific error

errno-74 is: Bad message

errno-75 is: Value too large for defined data type

errno-76 is: Name not unique on network

errno-77 is: File descriptor in bad state

errno-78 is: Remote address changed

errno-79 is: Can not access a needed shared library

errno-80 is: Accessing a corrupted shared library

errno-81 is: .lib secion in a.out corrupted

errno-82 is: Attempting to link in too many shared libraries

errno-83 is: Cannot exec a shared library directly

errno-84 is: Invalid or incomplete multibyte or wide character

errno-85 is: Interrupted system call should be restarted

errno-86 is: Streams pipe error

errno-87 is: Too many users

errno-88 is: Socket operation on non-socket

errno-89 is: Destination address required

errno-90 is: Message too long

errno-91 is: Protocol wrong type for socket

errno-92 is: Protocol not available

errno-93 is: Protocol not supported

errno-94 is: Socket type not supported

errno-95 is: Operation not supported

errno-96 is: Protocol family not supported

errno-97 is: Address family not supported by protocol

errno-98 is: Address already in use

errno-99 is: Cannot assign requested address

errno-100 is: Network is down

errno-101 is: Network is unreachable

errno-102 is: Network dropped connection on reset

errno-103 is: Software caused connection abort

errno-104 is: Connection reset by peer

errno-105 is: No buffer space available

errno-106 is: Transport endpoint is already connected

errno-107 is: Transport endpoint is not connected

errno-108 is: Cannot send after transport endpoint shutdown

errno-109 is: Too many references: cannot splice

errno-110 is: Connection timed out

errno-111 is: Connection refused

errno-112 is: Host is down

errno-113 is: No route to host

errno-114 is: Operation already in progress

errno-115 is: Operation now in progress

errno-116 is: Stale NFS file handle

errno-117 is: Structure needs cleaning

errno-118 is: Not a XENIX named type file

errno-119 is: No XENIX semaphores available

errno-120 is: Is a named type file

errno-121 is: Remote I/O error

errno-122 is: Disk quota exceeded

errno-123 is: No medium found

errno-124 is: Wrong medium type

errno-125 is: Operation canceled

errno-126 is: Required key not available

errno-127 is: Key has expired

errno-128 is: Key has been revoked

errno-129 is: Key was rejected by service

errno-130 is: Owner died

errno-131 is: State not recoverable

errno-132 is: Unknown error 132

132-255全是Unknown error