網上關于 errno 的資料，要么沒有錯誤名，要么沒有錯誤號，要么格式編排混亂……算了，自己記一個吧

本文地址：https://segmentfault.com/a/1190000006544500

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1~16

#define EPERM 1 /* Operation not permitted */ 操作不允許 #define ENOENT 2 /* No such file or directory */ 文件或者目錄不存在 #define ESRCH 3 /* No such process */ 進程不存在 #define EINTR 4 /* Interrupted system call */ 系統調用被中斷 #define EIO 5 /* I/O error */ I/O 錯誤 #define ENXIO 6 /* No such device or address */ 設備或地址不存在 #define E2BIG 7 /* Arg list too long */ 參數列表太長 #define ENOEXEC 8 /* Exec format error */ 執行格式錯誤 #define EBADF 9 /* Bad file number */ 文件描述符錯誤 #define ECHILD 10 /* No child processes */ 沒有子進程 #define EAGAIN 11 /* Try again */ 請重試 #define ENOMEM 12 /* Out of memory */ 內存不足 #define EACCES 13 /* Permission denied */ 認證被拒絕 #define EFAULT 14 /* Bad address */ 不可用的地址 #define ENOTBLK 15 /* Block device required */ 要求使用塊設備 #define EBUSY 16 /* Device or resource busy */ 設備或資源忙

17~32

#define EEXIST 17 /* File exists */ 文件已經存在 #define EXDEV 18 /* Cross-device link */ 交叉設備鏈接？ #define ENODEV 19 /* No such device */ 沒有這個設備 #define ENOTDIR 20 /* Not a directory */ 不是一個目錄 #define EISDIR 21 /* Is a directory */ 是一個目錄 #define EINVAL 22 /* Invalid argument */ 不可用的參數 #define ENFILE 23 /* File table overflow */ 文件表溢出 #define EMFILE 24 /* Too many open files */ 打開文件太多 #define ENOTTY 25 /* Not a typewriter */ #define ETXTBSY 26 /* Text file busy */ 文本文件忙 #define EFBIG 27 /* File too large */ 文件太大 #define ENOSPC 28 /* No space left on device */ 設備剩余空間不足 #define ESPIPE 29 /* Illegal seek */ 不合法的seek #define EROFS 30 /* Read-only file system */ 文件系統只讀 #define EMLINK 31 /* Too many links */ 鏈接太多 #define EPIPE 32 /* Broken pipe */ 斷掉的管道

33~48

#define EDOM 33 /* Math argument out of domain of func */ #define ERANGE 34 /* Math result not representable */ 計算結果無法表示出來 #define EDEADLK 35 /* Resource deadlock would occur */ 可能發生資源死鎖 #define ENAMETOOLONG 36 /* File name too long */ 文件名太長 #define ENOLCK 37 /* No record locks available */ 沒有可用的記錄鎖 #define ENOSYS 38 /* Function not implemented */ 函數還沒有被實現 #define ENOTEMPTY 39 /* Directory not empty */ 目錄非空 #define ELOOP 40 /* Too many symbolic links encountered */ 太多軟鏈接 #define EWOULDBLOCK EAGAIN /* Operation would block / (12) Try again */ #define ENOMSG 42 /* No message of desired type */ 針對指定的類型，沒有信息可用 #define EIDRM 43 /* Identifier removed */ 標識符已經被移除掉 #define ECHRNG 44 /* Channel number out of range */ 通道號超出范圍 #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 */ 鏈接數超出范圍

49~64

#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 /* (35) Resource deadlock would occur */ #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 */

65~80

#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 */

81~96

#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 */

97~112

#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 */

113~124

#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 */

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