linux常见错误码

一纸荒年

查看错误代码errno是调试程序的一个重要方法。当linuc C api函数发生异常时,一般会将errno变量(需include
errno.h)赋一个整数值,不同的值表示不同的含义,可以通过查看该值推测出错的原因。在实际编程中用这一
招解决了不少原本看来莫名其妙的问题。比较麻烦的是每次都要去linux源代码里面查找错误代码的含义，
现在把它贴出来，以后需要查时就来这里看了。


1-34号错误号是在内核源码的include/asm-generic/errno-base.h定义


35-132则是在include/asm-generic/errno.h中定义


剩下还有一些更大的错误号是留给内核级别的，如系统调用等，用户程序一般是看不见的这些号的，Ubu
ntu9.10中/usr/src/linux-headers-2.6.31-21-generic/include/linux/errno.h

1. 
   
2. 
   
3. #ifndef _ASM_GENERIC_ERRNO_BASE_H
   
4. #define _ASM_GENERIC_ERRNO_BASE_H
   
5. 
   
6. #define    EPERM         1    /＊ Operation not permitted ＊/
   
7. #define    ENOENT         2    /＊ No such file or directory ＊/
   
8. #define    ESRCH         3    /＊ No such process ＊/
   
9. #define    EINTR         4    /＊ Interrupted system call ＊/
   
10. #define    EIO         5    /＊ I/O error ＊/
    
11. #define    ENXIO         6    /＊ No such device or address ＊/
    
12. #define    E2BIG         7    /＊ Argument list too long ＊/
    
13. #define    ENOEXEC         8    /＊ Exec format error ＊/
    
14. #define    EBADF         9    /＊ Bad file number ＊/
    
15. #define    ECHILD        10    /＊ No child processes ＊/
    
16. #define    EAGAIN        11    /＊ Try again ＊/
    
17. #define    ENOMEM        12    /＊ Out of memory ＊/
    
18. #define    EACCES        13    /＊ Permission denied ＊/
    
19. #define    EFAULT        14    /＊ Bad address ＊/
    
20. #define    ENOTBLK        15    /＊ Block device required ＊/
    
21. #define    EBUSY        16    /＊ Device or resource busy ＊/
    
22. #define    EEXIST        17    /＊ File exists ＊/
    
23. #define    EXDEV        18    /＊ Cross-device link ＊/
    
24. #define    ENODEV        19    /＊ No such device ＊/
    
25. #define    ENOTDIR        20    /＊ Not a directory ＊/
    
26. #define    EISDIR        21    /＊ Is a directory ＊/
    
27. #define    EINVAL        22    /＊ Invalid argument ＊/
    
28. #define    ENFILE        23    /＊ File table overflow ＊/
    
29. #define    EMFILE        24    /＊ Too many open files ＊/
    
30. #define    ENOTTY        25    /＊ Not a typewriter ＊/
    
31. #define    ETXTBSY        26    /＊ Text file busy ＊/
    
32. #define    EFBIG        27    /＊ File too large ＊/
    
33. #define    ENOSPC        28    /＊ No space left on device ＊/
    
34. #define    ESPIPE        29    /＊ Illegal seek ＊/
    
35. #define    EROFS        30    /＊ Read-only file system ＊/
    
36. #define    EMLINK        31    /＊ Too many links ＊/
    
37. #define    EPIPE        32    /＊ Broken pipe ＊/
    
38. #define    EDOM        33    /＊ Math argument out of domain of func ＊/
    
39. #define    ERANGE        34    /＊ Math result not representable ＊/
    
40. 
    
41. #endif
    
42. 
    
43. 
    
44. #include <asm-generic/errno-base.h>
    
45. 
    
46. #define    EDEADLK        35    /＊ Resource deadlock would occur ＊/
    
47. #define    ENAMETOOLONG    36    /＊ File name too long ＊/
    
48. #define    ENOLCK        37    /＊ No record locks available ＊/
    
49. #define    ENOSYS        38    /＊ Function not implemented ＊/
    
50. #define    ENOTEMPTY    39    /＊ Directory not empty ＊/
    
51. #define    ELOOP        40    /＊ Too many symbolic links encountered ＊/
    
52. #define    EWOULDBLOCK    EAGAIN    /＊ Operation would block ＊/
    
53. #define    ENOMSG        42    /＊ No message of desired type ＊/
    
54. #define    EIDRM        43    /＊ Identifier removed ＊/
    
55. #define    ECHRNG        44    /＊ Channel number out of range ＊/
    
56. #define    EL2NSYNC    45    /＊ Level 2 not synchronized ＊/
    
57. #define    EL3HLT        46    /＊ Level 3 halted ＊/
    
58. #define    EL3RST        47    /＊ Level 3 reset ＊/
    
59. #define    ELNRNG        48    /＊ Link number out of range ＊/
    
60. #define    EUNATCH        49    /＊ Protocol driver not attached ＊/
    
61. #define    ENOCSI        50    /＊ No CSI structure available ＊/
    
62. #define    EL2HLT        51    /＊ Level 2 halted ＊/
    
63. #define    EBADE        52    /＊ Invalid exchange ＊/
    
64. #define    EBADR        53    /＊ Invalid request descriptor ＊/
    
65. #define    EXFULL        54    /＊ Exchange full ＊/
    
66. #define    ENOANO        55    /＊ No anode ＊/
    
67. #define    EBADRQC        56    /＊ Invalid request code ＊/
    
68. #define    EBADSLT        57    /＊ Invalid slot ＊/
    
69. 
    
70. #define    EDEADLOCK    EDEADLK
    
71. 
    
72. #define    EBFONT        59    /＊ Bad font file format ＊/
    
73. #define    ENOSTR        60    /＊ Device not a stream ＊/
    
74. #define    ENODATA        61    /＊ No data available ＊/
    
75. #define    ETIME        62    /＊ Timer expired ＊/
    
76. #define    ENOSR        63    /＊ Out of streams resources ＊/
    
77. #define    ENONET        64    /＊ Machine is not on the network ＊/
    
78. #define    ENOPKG        65    /＊ Package not installed ＊/
    
79. #define    EREMOTE        66    /＊ Object is remote ＊/
    
80. #define    ENOLINK        67    /＊ Link has been severed ＊/
    
81. #define    EADV        68    /＊ Advertise error ＊/
    
82. #define    ESRMNT        69    /＊ Srmount error ＊/
    
83. #define    ECOMM        70    /＊ Communication error on send ＊/
    
84. 
    

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一纸荒年

1. #define EPROTO 71 /＊ Protocol error ＊/
   
2. #define EMULTIHOP 72 /＊ Multihop attempted ＊/
   
3. #define EDOTDOT 73 /＊ RFS specific error ＊/
   
4. #define EBADMSG 74 /＊ Not a data message ＊/
   
5. #define EOVERFLOW 75 /＊ Value too large for defined data type ＊/
   
6. #define ENOTUNIQ 76 /＊ Name not unique on network ＊/
   
7. #define EBADFD 77 /＊ File descriptor in bad state ＊/
   
8. #define EREMCHG 78 /＊ Remote address changed ＊/
   
9. #define ELIBACC 79 /＊ Can not access a needed shared library ＊/
   
10. #define ELIBBAD 80 /＊ Accessing a corrupted shared library ＊/
    
11. #define ELIBSCN 81 /＊ .lib section in a.out corrupted ＊/
    
12. #define ELIBMAX 82 /＊ Attempting to link in too many shared libraries ＊/
    
13. #define ELIBEXEC 83 /＊ Cannot exec a shared library directly ＊/
    
14. #define EILSEQ 84 /＊ Illegal byte sequence ＊/
    
15. #define ERESTART 85 /＊ Interrupted system call should be restarted ＊/
    
16. #define ESTRPIPE 86 /＊ Streams pipe error ＊/
    
17. #define EUSERS 87 /＊ Too many users ＊/
    
18. #define ENOTSOCK 88 /＊ Socket operation on non-socket ＊/
    
19. #define EDESTADDRREQ 89 /＊ Destination address required ＊/
    
20. #define EMSGSIZE 90 /＊ Message too long ＊/
    
21. #define EPROTOTYPE 91 /＊ Protocol wrong type for socket ＊/
    
22. #define ENOPROTOOPT 92 /＊ Protocol not available ＊/
    
23. #define EPROTONOSUPPORT 93 /＊ Protocol not supported ＊/
    
24. #define ESOCKTNOSUPPORT 94 /＊ Socket type not supported ＊/
    
25. #define EOPNOTSUPP 95 /＊ Operation not supported on transport endpoint ＊/
    
26. #define EPFNOSUPPORT 96 /＊ Protocol family not supported ＊/
    
27. #define EAFNOSUPPORT 97 /＊ Address family not supported by protocol ＊/
    
28. #define EADDRINUSE 98 /＊ Address already in use ＊/
    
29. #define EADDRNOTAVAIL 99 /＊ Cannot assign requested address ＊/
    
30. #define ENETDOWN 100 /＊ Network is down ＊/
    
31. #define ENETUNREACH 101 /＊ Network is unreachable ＊/
    
32. #define ENETRESET 102 /＊ Network dropped connection because of reset ＊/
    
33. #define ECONNABORTED 103 /＊ Software caused connection abort ＊/
    
34. #define ECONNRESET 104 /＊ Connection reset by peer ＊/
    
35. #define ENOBUFS 105 /＊ No buffer space available ＊/
    
36. #define EISCONN 106 /＊ Transport endpoint is already connected ＊/
    
37. #define ENOTCONN 107 /＊ Transport endpoint is not connected ＊/
    
38. #define ESHUTDOWN 108 /＊ Cannot send after transport endpoint shutdown ＊/
    
39. #define ETOOMANYREFS 109 /＊ Too many references: cannot splice ＊/
    
40. #define ETIMEDOUT 110 /＊ Connection timed out ＊/
    
41. #define ECONNREFUSED 111 /＊ Connection refused ＊/
    
42. #define EHOSTDOWN 112 /＊ Host is down ＊/
    
43. #define EHOSTUNREACH 113 /＊ No route to host ＊/
    
44. #define EALREADY 114 /＊ Operation already in progress ＊/
    
45. #define EINPROGRESS 115 /＊ Operation now in progress ＊/
    
46. #define ESTALE 116 /＊ Stale NFS file handle ＊/
    
47. #define EUCLEAN 117 /＊ Structure needs cleaning ＊/
    
48. #define ENOTNAM 118 /＊ Not a XENIX named type file ＊/
    
49. #define ENAVAIL 119 /＊ No XENIX semaphores available ＊/
    
50. #define EISNAM 120 /＊ Is a named type file ＊/
    
51. #define EREMOTEIO 121 /＊ Remote I/O error ＊/
    
52. #define EDQUOT 122 /＊ Quota exceeded ＊/
    
53. 
    
54. #define ENOMEDIUM 123 /＊ No medium found ＊/
    
55. #define EMEDIUMTYPE 124 /＊ Wrong medium type ＊/
    
56. #define ECANCELED 125 /＊ Operation Canceled ＊/
    
57. #define ENOKEY 126 /＊ Required key not available ＊/
    
58. #define EKEYEXPIRED 127 /＊ Key has expired ＊/
    
59. #define EKEYREVOKED 128 /＊ Key has been revoked ＊/
    
60. #define EKEYREJECTED 129 /＊ Key was rejected by service ＊/
    
61. 
    
62. /＊ for robust mutexes ＊/
    
63. #define EOWNERDEAD 130 /＊ Owner died ＊/
    
64. #define ENOTRECOVERABLE 131 /＊ State not recoverable ＊/
    
65. 
    
66. #define ERFKILL 132 /＊ Operation not possible due to RF-kill ＊/
    
67. 
    
68. 
    
69. #ifdef __KERNEL__
    
70. 
    
71. /＊
    
72. ＊ These should never be seen by user programs. To return one of ERESTART＊
    
73. ＊ codes, signal_pending() MUST be set. Note that ptrace can observe these
    
74. ＊ at syscall exit tracing, but they will never be left for the debugged user
    
75. ＊ process to see.
    
76. ＊/
    
77. #define ERESTARTSYS 512
    
78. #define ERESTARTNOINTR 513
    
79. #define ERESTARTNOHAND 514 /＊ restart if no handler.. ＊/
    
80. #define ENOIOCTLCMD 515 /＊ No ioctl command ＊/
    
81. #define ERESTART_RESTARTBLOCK 516 /＊ restart by calling sys_restart_syscall ＊/
    
82. 
    
83. /＊ Defined for the NFSv3 protocol ＊/
    
84. #define EBADHANDLE 521 /＊ Illegal NFS file handle ＊/
    
85. #define ENOTSYNC 522 /＊ Update synchronization mismatch ＊/
    
86. #define EBADCOOKIE 523 /＊ Cookie is stale ＊/
    
87. #define ENOTSUPP 524 /＊ Operation is not supported ＊/
    
88. #define ETOOSMALL 525 /＊ Buffer or request is too small ＊/
    
89. #define ESERVERFAULT 526 /＊ An untranslatable error occurred ＊/
    
90. #define EBADTYPE 527 /＊ Type not supported by server ＊/
    
91. #define EJUKEBOX 528 /＊ Request initiated, but will not complete before timeout ＊/
    
92. #define EIOCBQUEUED 529 /＊ iocb queued, will get completion event ＊/
    
93. #define EIOCBRETRY 530 /＊ iocb queued, will trigger a retry ＊/
    
94. 
    
95. #endif

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