Linux System 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 4 /* Interrupted system call */ #define EIO 5 /* I/O error */ #define ENXIO 6 /* No such device linux errno example or address */ #define E2BIG 7 /* Arg list too long */ #define ENOEXEC 8 /* Exec format
Posix Error Codes
error */ #define EBADF 9 /* Bad file number */ #define ECHILD 10 /* No child processes */ #define EAGAIN 11 /* Try again */ #define ENOMEM linux errno to string 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 errno.h linux kernel 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
Errno.h Windows
/* 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 */ #
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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. http://www-numi.fnal.gov/offline_software/srt_public_context/WebDocs/Errors/unix_system_errors.html Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question 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 http://unix.stackexchange.com/questions/8355/understand-error-codes-in-linux 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 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 m
codes can’t occur on GNU systems, but they can occur using the GNU C Library on other systems. Macro: int EPERM Operation not permitted; only the owner of the file (or other resource) or processes with special privileges can http://www.gnu.org/s/libc/manual/html_node/Error-Codes.html perform the operation. Macro: int ENOENT No such file or directory. This is a “file https://blog.udemy.com/linux-error-codes/ doesn’t exist” error for ordinary files that are referenced in contexts where they are expected to already exist. Macro: int ESRCH No process matches the specified process ID. Macro: int EINTR Interrupted function call; an asynchronous signal occurred and prevented completion of the call. When this happens, you should try the call again. You can choose to have functions resume error codes after a signal that is handled, rather than failing with EINTR; see Interrupted Primitives. Macro: int EIO Input/output error; usually used for physical read or write errors. Macro: int ENXIO No such device or address. The system tried to use the device represented by a file you specified, and it couldn’t find the device. This can mean that the device file was installed incorrectly, or that the physical device is missing or not correctly attached to linux system error the computer. Macro: int E2BIG Argument list too long; used when the arguments passed to a new program being executed with one of the exec functions (see Executing a File) occupy too much memory space. This condition never arises on GNU/Hurd systems. Macro: int ENOEXEC Invalid executable file format. This condition is detected by the exec functions; see Executing a File. Macro: int EBADF Bad file descriptor; for example, I/O on a descriptor that has been closed or reading from a descriptor open only for writing (or vice versa). Macro: int ECHILD There are no child processes. This error happens on operations that are supposed to manipulate child processes, when there aren’t any processes to manipulate. Macro: int EDEADLK Deadlock avoided; allocating a system resource would have resulted in a deadlock situation. The system does not guarantee that it will notice all such situations. This error means you got lucky and the system noticed; it might just hang. See File Locks, for an example. Macro: int ENOMEM No memory available. The system cannot allocate more virtual memory because its capacity is full. Macro: int EACCES Permission denied; the file permissions do not allow the attempted operation. Macro: int EFAULT Bad address; an invalid pointer was detected. On GNU/Hurd systems, this error never happens; you get a signal instead. Macro: int ENOTBLK A file that isn’
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