Linux Error Code:-C code snippet tries to open a file through an open system call. There are two flags in the open call. The O_CREAT flag is to create a file if the file does not exist. The O_EXCL flag is used with O_CREAT if the file already exists open call will fail with the proper error number.
Linux Error Code in C code :-
$ cat fileopen.c #include <stdio.h> #include <fcntl.h> #include <errno.h> #include <string.h> main() { // Declaration of a file descriptor int fd; // Opening a file fd = open("/root/sasikala/testing",O_CREAT|O_EXCL); // If Open is failed if ( fd < 0 ) { printf("Opening file : Failed\n"); printf ("Error no is : %d\n", errno); printf("Error description is : %s\n",strerror(errno)); } // If Open is success else printf("Opening file : Success\n"); } $ cc -o fileopen fileopen.c $ ./fileopen Opening file : Success $ ./fileopen Opening file : Failed Error no is : 17 Error description is : File exists
open got executed successfully, and it created the file since the file was not available. In the next execution, it throws an error number 17, which is “File already exist”. Linux Error Code
The following table shows a list of error numbers and their descriptions in the Linux operation system. Linux Error Code
Linux Error Code |
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Error number | Error Code | Error Description |
1 | EPERM | Operation not permitted |
2 | ENOENT | No such file or directory |
3 | ESRCH | No such process |
4 | EINTR | Interrupted system call |
5 | EIO | I/O error |
6 | ENXIO | No such device or address |
7 | E2BIG | Argument list too long |
8 | ENOEXEC | Exec format error |
9 | EBADF | Bad file number |
10 | ECHILD | No child processes |
11 | EAGAIN | Try again |
12 | ENOMEM | Out of memory |
13 | EACCES | Permission denied |
14 | EFAULT | Bad address |
15 | ENOTBLK | Block device required |
16 | EBUSY | Device or resource busy |
17 | EEXIST | File exists |
18 | EXDEV | Cross-device link |
19 | ENODEV | No such device |
20 | ENOTDIR | Not a directory |
21 | EISDIR | Is a directory |
22 | EINVAL | Invalid argument |
23 | ENFILE | File table overflow |
24 | EMFILE | Too many open files |
25 | ENOTTY | Not a typewriter |
26 | ETXTBSY | Text file busy |
27 | EFBIG | File too large |
28 | ENOSPC | No space left on device |
29 | ESPIPE | Illegal seek |
30 | EROFS | Read-only file system |
31 | EMLINK | Too many links |
32 | EPIPE | Broken pipe |
33 | EDOM | Math argument out of domain of func |
34 | ERANGE | Math result not representable |
35 | EDEADLK | Resource deadlock would occur |
36 | ENAMETOOLONG | File name too long |
37 | ENOLCK | No record locks available |
38 | ENOSYS | Function not implemented |
39 | ENOTEMPTY | Directory not empty |
40 | ELOOP | Too many symbolic links encountered |
42 | ENOMSG | No message of desired type |
43 | EIDRM | Identifier removed |
44 | ECHRNG | Channel number out of range |
45 | EL2NSYNC | Level 2 not synchronized |
46 | EL3HLT | Level 3 halted |
47 | EL3RST | Level 3 reset |
48 | ELNRNG | Link number out of range |
49 | EUNATCH | Protocol driver not attached |
50 | ENOCSI | No CSI structure available |
51 | EL2HLT | Level 2 halted |
52 | EBADE | Invalid exchange |
53 | EBADR | Invalid request descriptor |
54 | EXFULL | Exchange full |
55 | ENOANO | No anode |
56 | EBADRQC | Invalid request code |
57 | EBADSLT | Invalid slot |
59 | EBFONT | Bad font file format |
60 | ENOSTR | Device not a stream |
61 | ENODATA | No data available |
62 | ETIME | Timer expired |
63 | ENOSR | Out of streams resources |
64 | ENONET | Machine is not on the network |
65 | ENOPKG | Package not installed |
66 | EREMOTE | Object is remote |
67 | ENOLINK | Link has been severed |
68 | EADV | Advertise error |
69 | ESRMNT | Srmount error |
70 | ECOMM | Communication error on send |
71 | EPROTO | Protocol error |
72 | EMULTIHOP | Multihop attempted |
73 | EDOTDOT | RFS specific error |
74 | EBADMSG | Not a data message |
75 | EOVERFLOW | Value too large for defined data type |
76 | ENOTUNIQ | Name not unique on network |
77 | EBADFD | File descriptor in bad state |
78 | EREMCHG | Remote address changed |
79 | ELIBACC | Can not access a needed shared library |
80 | ELIBBAD | Accessing a corrupted shared library |
81 | ELIBSCN | .lib section in a.out corrupted |
82 | ELIBMAX | Attempting to link in too many shared libraries |
83 | ELIBEXEC | Cannot exec a shared library directly |
84 | EILSEQ | Illegal byte sequence |
85 | ERESTART | Interrupted system call should be restarted |
86 | ESTRPIPE | Streams pipe error |
87 | EUSERS | Too many users |
88 | ENOTSOCK | Socket operation on non-socket |
89 | EDESTADDRREQ | Destination address required |
90 | EMSGSIZE | Message too long |
91 | EPROTOTYPE | Protocol wrong type for socket |
92 | ENOPROTOOPT | Protocol not available |
93 | EPROTONOSUPPORT | Protocol not supported |
94 | ESOCKTNOSUPPORT | Socket type not supported |
95 | EOPNOTSUPP | Operation not supported on transport endpoint |
96 | EPFNOSUPPORT | Protocol family not supported |
97 | EAFNOSUPPORT | Address family not supported by protocol |
98 | EADDRINUSE | Address already in use |
99 | EADDRNOTAVAIL | Cannot assign requested address |
100 | ENETDOWN | Network is down |
101 | ENETUNREACH | Network is unreachable |
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