many open files
由上可见Linux对错误宏的定义。
头文件 /usr/include/asm-generic/errno-base.h 的源码：
#ifndef _ASM_GENERIC_ERRNO_BASE_H
#define _ASM_GENERIC_ERRNO_BASE_H
#define ENOENT2/* No such file or directory */
#define ENOEXEC8/* Exec format error */
#define ECHILD10/* No child processes */
#define EAGAIN11/* Try again */
#define ENOMEM12/* Out of memory */
#define EACCES13/* Permission denied */
#define EFAULT14/* Bad address */
#define ENOTBLK15/* Block device required */
#define EEXIST17/* File exists */
#define ENODEV19/* No such device */
#define ENOTDIR20/* Not a directory */
#define EISDIR21/* Is a directory */
#define EINVAL22/* Invalid argument */
#define ENFILE23/* File table overflow */
#define EMFILE24/* Too many open files */
#define ENOTTY25/* Not a typewriter */
#define ETXTBSY26/* Text file busy */
#define ENOSPC28/* No space left on device */
#define ESPIPE29/* Illegal seek */
#define EMLINK31/* Too many links */
#define ERANGE34/* Math result not representable */
#endif
头文件/usr/include/asm-generic/erno.h源码：
#ifndef _ASM_GENERIC_ERRNO_H
#define _ASM_GENERIC_ERRNO_H
#include <asm-generic/errno-base.h>
#define EDEADLK35/* Resource deadlock would occur */
#define ENAMETOOLONG36/* File name too long */
#define ENOLCK37/* No record locks available */
#define ENOSYS38/* Function not implemented */
#define ENOTEMPTY39/* Directory not empty */
#define EWOULDBLOCKEAGAIN/* Operation would block */
#define ENOMSG42/* No message of desired type */
#define ECHRNG44/* Channel number out of range */
#define EL2NSYNC45/* Level 2 not synchronized */
#define EL3HLT46/* Level 3 halted */
#define EL3RST47/* Level 3 reset */
#define ELNRNG48/* Link number out of range */
#define EUNATCH49/* Protocol driver not attached */
#define ENOCSI50/* No CSI structure available */
#define EL2HLT51/* Level 2 halted */
#define EXFULL54/* Exchange full */
#define ENOANO55/* No anode */
#define EBADRQC56/* Invalid request code */
#define EBADSLT57/* Invalid slot */
#define EDEADLOCKEDEADLK
#define EBFONT59/* Bad font file format */
#define ENOSTR60/* Device not a stream */
#define ENODATA61/* No data available */
#define ENONET64/* Machine is not on the network */
#define ENOPKG65/* Package not installed */
#define EREMOTE66/* Object is remote */
#define ENOLINK67/* Link has been severed */
#define ESRMNT69/* Srmount error */
#define EPROTO71/* Protocol error */
#define EMULTIHOP72/* Multihop attempted */
#define EDOTDOT73/* RFS specific error */
#define EBADMSG74/* Not a data message */
#define EOVERFLOW75/* Value too large for defined data type */
#define ENOTUNIQ76/* Name not unique on network */
#define EBADFD77/* File descriptor in bad state */
#define EREMCHG78/* Remote address changed */
#define ELIBACC79/* Can not access a needed shared library */
#define ELIBBAD80/* Accessing a corrupted shared library */
#define ELIBSCN81/* .lib section in a.out corrupted */
#define ELIBMAX82/* Attempting to link in too many shared libraries */
#define ELIBEXEC83/* Cannot exec a shared library directly */
#define EILSEQ84/* Illegal byte sequence */
#define ERESTART85/* Interrupted system call should be restarted */
#define ESTRPIPE86/* Streams pipe error */
#define EUSERS87/* Too many users */
#define ENOTSOCK88/* Socket operation on non-socket */
#define EDESTADDRREQ89/* Destination address required */
#define EMSGSIZE90/* Message too long */
#define EPROTOTYPE91/* Protocol wrong type for socket */
#define ENOPROTOOPT92/* Protocol not available */
#define EPROTONOSUPPORT93/* Protocol not supported */
#define ESOCKTNOSUPPORT94/* Socket type not supported */
#define EOPNOTSUPP95/* Operation not supported on transport endpoint */
#define EPFNOSUPPORT96/* Protocol family not supported */
#define EAFNOSUPPORT97/* Address family not supported by protocol */
#define EADDRINUSE98/* Address already in use */
#define EADDRNOTAVAIL99/* Cannot assign requested address */
#define ENETDOWN100/* Network is down */
#define ENETUNREACH101/* Network is unreachable */
#define ENETRESET102/* Network dropped connection because of reset */
#define ECONNABORTED103/* Software caused connection abort */
#define ECONNRESET104/* Connection reset by peer */
#define ENOBUFS105/* No buffer space available */
#define EISCONN106/* Transport endpoint is already connected */
#define ENOTCONN107/* Transport endpoint is not connected */
#define ESHUTDOWN108/* Cannot send after transport endpoint shutdown */
#define ETOOMANYREFS109/* Too many references: cannot splice */
#define ETIMEDOUT110/* Connection timed out */
#define ECONNREFUSED111/* Connection refused */
#define EHOSTDOWN112/* Host is down */
#define EHOSTUNREACH113/* No route to host */
#define EALREADY114/* Operation already in progress */
#define EINPROGRESS115/* Operation now in progress */
#define ESTALE116/* Stale NFS file handle */
#define EUCLEAN117/* Structure needs cleaning */
#define ENOTNAM118/* Not a XENIX named type file */
#define ENAVAIL119/* No XENIX semaphores available */
#define EISNAM120/* Is a named type file */
#define EREMOTEIO121/* Remote I/O error */
#define EDQUOT122/* Quota exceeded */
#define ENOMEDIUM123/* No medium found */
#define EMEDIUMTYPE124/* Wrong medium type */
#define ECANCELED125/* Operation Canceled */
#define ENOKEY126/* Required key not available */
#define EKEYEXPIRED127/* Key has expired */
#define EKEYREVOKED128/* Key has been revoked */
#define EKEYREJECTED129/* Key was rejected by service */
/* for robust mutexes */
#define EOWNERDEAD130/* Owner died */
#define ENOTRECOVERABLE131/* State not recoverable */
#define ERFKILL 132/* Operation not possible due to RF-kill */
#endif
来源：博客园
作者：起风了zz
链接：https://www.cnblogs.com/lzz781699880/p/11558237.html