linux错误码大全
查看错误代码errno是调试程序的一个重要方法。当linuc capi函数发生异常时,一般会将errno变量(需includeerrno.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，ubuntu9.10中/usr/src/linux-headers-2.6.31-21-generic/include/linux/errno.h
#ifndef_asm_generic_errno_base_h
#define_asm_generic_errno_base_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 /＊ argument 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 domainof func ＊/
#define erange 34 /＊ math result notrepresentable ＊/
#endif
#include
#define edeadlk 35 /＊ resource deadlock wouldoccur ＊/
#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 linksencountered ＊/
#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 /＊ level2 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 notattached ＊/
#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 thenetwork ＊/
#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 /＊ valuetoo large for defined data type ＊/
#define enotuniq 76 /＊ namenot unique on network ＊/
#define ebadfd 77 /＊ file descriptor in badstate ＊/
#define eremchg 78 /＊ remote address changed＊/
#define elibacc 79 /＊ can not access a neededshared library ＊/
#define elibbad 80 /＊ accessing a corruptedshared library ＊/
#define elibscn 81 /＊ .lib section in a.outcorrupted ＊/
#define elibmax 82 /＊ attempting to link in toomany shared libraries ＊/
#define elibexec 83 /＊ cannotexec 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 /＊ socketoperation 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 isalready 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 /＊ hostis 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 semaphoresavailable ＊/
#define eisnam 120 /＊ is a named type file＊/
#define eremoteio 121 /＊remote i/o error ＊/
#define edquot 122 /＊ quota exceeded＊/
#define enomedium 123 /＊ nomedium found ＊/
#define emediumtype 124 /＊ wrongmedium type ＊/
#define ecanceled 125 /＊operation canceled ＊/
#define enokey 126 /＊ required key not available＊/
#define ekeyexpired 127 /＊ keyhas expired ＊/
#define ekeyrevoked 128 /＊ keyhas been revoked ＊/
#define ekeyrejected 129 /＊ key was rejected by service＊/
/＊ forrobust mutexes ＊/
#define eownerdead 130 /＊ ownerdied ＊/
#define enotrecoverable 131 /＊ state not recoverable ＊/
#defineerfkill 132 /＊operation not possible due to rf-kill ＊/
#ifdef__kernel__
/＊
＊ these should never be seenby user programs. to return one of erestart＊
＊ codes, signal_pending()must be set. note that ptrace can observe these
＊ at syscall exit tracing,but they will never be left for the debuggeduser
＊ process tosee.
＊/
#defineerestartsys 512
#defineerestartnointr 513
#defineerestartnohand 514 /＊ restart if no handler..＊/
#defineenoioctlcmd 515 /＊ no ioctl command＊/
#defineerestart_restartblock 516 /＊ restart by calling sys_restart_syscall＊/
/＊defined for the nfsv3 protocol ＊/
#defineebadhandle 521 /＊ illegal nfs file handle＊/
#defineenotsync 522 /＊ update synchronizationmismatch ＊/
#defineebadcookie 523 /＊ cookie is stale＊/
#defineenotsupp 524 /＊ operation is not supported＊/
#defineetoosmall 525 /＊ buffer or request is toosmall ＊/
#defineeserverfault 526 /＊ an untranslatable erroroccurred ＊/
#defineebadtype 527 /＊ type not supported byserver ＊/
#defineejukebox 528 /＊ request initiated, but willnot complete before timeout ＊/
#defineeiocbqueued 529 /＊ iocb queued, will getcompletion event ＊/
#defineeiocbretry 530 /＊ iocb queued, will trigger aretry ＊/
#endif