linux查看系统相关信息失败,Linux错误码查看

在用Linux下写C的代码的时候，利用open、create函数总是会出现错误

但是返回值为 -1 ，并不能定位错误在哪里，所以查看系统提供的错误码就显得特别有必要了

需要包含头文件 并且定义一个 extern int errno 之后打印出来变量 errno 查看错误码

在 /var/include/asm/ermo_bash.h 和 ermo.h

这两个头文件中都有错误码，这样在函数后面加上一个 printf 就可以定位错误的原因

我的错误码是13，其原因在于服务器拒绝对系统默认文件夹进行写入操作

导致无法在文件夹下进行创建新文件的动作

没找到解决办法，在外层文件夹下将就了，迫不得以破坏了文件的存放规律

附上一份错误码的表，以后就不需要每次都去翻两个文件了。

#ifndef _I386_ERRNO_H

#define _I386_ERRNO_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 /* Arg 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 */ //这是我今天遇到的问题

#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 */

#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 */

#endif