Linux File Error Codes
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Aug 2004 on RedHat 7.3 #define EPERM 1 /* Operation not permitted */ #define ENOENT 2 /* No such file or directory */ #define ESRCH 3 /* No such process */ #define EINTR linux errno example 4 /* Interrupted system call */ #define EIO 5 /* I/O error */ #define ENXIO
Posix Error Codes
6 /* No such device or address */ #define E2BIG 7 /* Arg list too long */ #define ENOEXEC 8 /*
Linux Errno To String
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
Errno.h Linux Kernel
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 errno.h windows /* 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 EL
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us http://unix.stackexchange.com/questions/8355/understand-error-codes-in-linux Learn more about Stack Overflow the company Business Learn more about hiring developers https://blog.udemy.com/linux-error-codes/ or posting ads with us Unix & Linux Questions Tags Users Badges Unanswered Ask Question _ Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question error codes Anybody can answer The best answers are voted up and rise to the top Understand error codes in Linux up vote 4 down vote favorite I am working on Linux (Kernel Version 2.6.32.28) laptop. After I inserted/did file io/removed a SD combo card, I got following errors: mmcblk0: error -123 sending status command mmcblk0: error -123 sending read/write command, response 0x0, card status 0x0 mmcblk0: error -123 sending requesting linux file error status Now, I would like to understand what these errors mean. As I saw few standard error codes are located in arch/powerpc/boot/stdio.h and other scattered at various other places.. Is there any systematic way in Linux to track (& understand) the error codes (in the source) ? linux system-calls error-handling share|improve this question edited Feb 11 '12 at 0:00 Gilles 372k696761127 asked Feb 28 '11 at 7:02 TheCottonSilk 13327 migrated from stackoverflow.com Feb 28 '11 at 20:33 This question came from our site for professional and enthusiast programmers. add a comment| 4 Answers 4 active oldest votes up vote 5 down vote accepted There are standard error values, defined in errno.h. You can look at this file on your system to see the numerical values. On most systems, they're in /usr/include/errno.h or a file that it includes. On Linux, most are in /usr/include/asm-generic/errno-base.h or /usr/include/asm-generic/errno.h, with a few more in /usr/include/bits/errno.h. If you have a numerical value, call the standard library function strerror or perror to obtain the corresponding error message (in your current locale). From the command line, a quick way to see an error string is one of perl -MPOSIX -le 'print strerror 123' python -c 'import os; print os.strerror(123)' zmodload zsh/system; syser
June 12, 2014 by Stacey Pegram When performing tasks in Linux or using programs that interact within a Linux environment, it is feasible that you will encounter errors. While some errors may be relatively minor and may not be associated with interruptions of major program functions; to avoid escalation of issues, even minor errors should be addressed. There are also errors associated with events that could potentially cause systems to stop responding, functions to not complete as intended, or loss of data. Errors can be displayed in the form of codes or messages that indicate an anomaly or other potential issue has been detected and provide information for the source of an issue. Locating Error Logs If you do not receive the expected output in a program or a program seems to have stopped responding, then locating the errors associated with the occurrence could prove to be an essential step in diagnosing the issue(s). In Linux, I have found that one of the best ways to gain more insight on events is to use file navigation to find details. When diagnosing issues, error logs often became my best friend. Of course, in order to navigate through file systems, one could first access a command line. An interface had been designed to provide user access to as well as use of a command line. The default command line interface for Linux is the Bourne Again Shell (BASH), which is an advanced version of the Bourne Shell (SH). BASH is Unix based and although BASH is based on standards derived from a Portable Operating System Interface for Unix (POSIX) type shell, BASH also includes functions that had not originally been supported by POSIX shells. The means of access to a command line in Linux can vary as users can set access methods (such as by creating a shortcut for a terminal) and default methods may vary from version to version. Common ways to access a Linux command line are via a terminal (In some versions of Linux, the terminal can be accessed from the System Tools menu or from a toolbar) or console (can be accessed with combination keys, such as CTRL+ALT+F1). Explore a tutorial for more insight on BASH scripting. Commands and scripts executed from a command line can be used for locating information, which can include errors. Although the concept of using scripts and using commands can be quite similar, one way to differentiate commands from scripts is as follows: a collection of commands (such as those in a function or module) can be encompassed as a script (which can then be stored in a directory and called from a directory); whereas, commands are typically manually typed line-by-line dire