LINUX 内核代码 errno 错误代码提示 /include/asm/errno.h

　　首先在自己的程序中#include<errno.h>
　　添加打印errno的语句 printf("errno is: %d\n",errno);
　　根据errno的值查错。
　　errno的不同值的含义：
　　以下来自linux 2.4.20-18的内核代码中的/usr如何查看errno 错误代码 /include/asm/errno.h
　　#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 */
　　#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 */
　　#endif