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Unix Numeric Error Codes

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Unfortunately, those files are only a little bit more illuminating than the numeric errors themselves. Or you can use: char *strerror(int errnum); to return the description of the error as a string so you can inspect it or print it how you like. Macro: int EFAULT Bad address; an invalid pointer was detected. See Socket Options. http://crimsonskysoftware.com/linux-errno/unix-error-codes-13.html

A function returns this error when certain parameter values are valid, but the functionality they request is not available. Or even zsh, where you also get the constant name with zmodload zsh/system; echo $errnos[123]. –Gilles Feb 28 '11 at 22:45 add a comment| Your Answer draft saved draft discarded Macro: int EDEADLK Deadlock avoided; allocating a system resource would have resulted in a deadlock situation. share|improve this answer answered Jul 9 '09 at 6:54 Daniel Schuler 1,3671620 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google http://aplawrence.com/Unixart/errors.html

Linux Errno Codes

Are there standard exit codes for processes in Linux? The output from Listing [email protected] [507]$ ./Debug/errnoDemo Opening /tmp/this_file_does_not_exist.yarly... O_CREAT flag is to create a file, if the file does not exist.

  1. I think, in python solution, os.strerror is required.. –TheCottonSilk Mar 1 '11 at 5:28 @TheCottonSilk: Thanks, fixed.
  2. Not the answer you're looking for?
  3. Macro: int EMFILE The current process has too many files open and can’t open any more.
  4. For details of in-depth Linux/UNIX system programming training courses that I teach, look here.
  5. Macro: int EPERM Operation not permitted; only the owner of the file (or other resource) or processes with special privileges can perform the operation.
  6. ESTRPIPE0.392if pipe/FIFO, don't sleep in stream head86Streams pipe error92if pipe/FIFO, don't sleep in stream head EUCLEAN0.3117Structure needs cleaning135Structure needs cleaning35Unknown error ENOTNAM0.2118Not a XENIX named type file137Not a XENIX named type

Send me email. (OLDER) <- More Stuff -> (NEWER) (NEWEST) Printer Friendly Version Home -> Unix Articles -> Numeric Unix Error Messages 4 comments Increase ad revenue 50-250% with share|improve this answer edited Feb 28 '11 at 21:40 answered Feb 28 '11 at 21:24 Mikel 29.3k768100 perror(1)? Password:*Forgot your password?Change your password Keep me signed in. Errno.h Linux Kernel This is generally around 2GB, but most modern file systems support much larger files, sometimes requiring 64-bit versions of the read()/write() and lseek() functions.EINTR -- The function was interrupted by a

Macro: int EPROCUNAVAIL ??? Linux Errno Example However, most of that kind of thing is esoteric detail of concern only to programmers working on multiple platforms.Even where the error numbers and the symbolic constants are the same, the The mmap() call will return this if you've specified a specific address but that address can't be used. Since exit code 1 signifies so many possible errors, it is not particularly useful in debugging.

There has been an attempt to systematize exit status numbers (see /usr/include/sysexits.h

The article was very informative and was a great help. Bad File Number Got something to add? In C programming language, there is an external variable called "errno". EINVAL Invalid argument (POSIX.1) EIO Input/output error (POSIX.1) EISCONN Socket is connected (POSIX.1) EISDIR Is a directory (POSIX.1) EISNAM Is a named type file EKEYEXPIRED Key has expired EKEYREJECTED Key was

Linux Errno Example

There is likely some mechanism, either in the kernel or in the shell, that translates that into the exit code. Macro: int ETXTBSY An attempt to execute a file that is currently open for writing, or write to a file that is currently being executed. Linux Errno Codes You get this error when you try to transmit data over a socket, without first specifying a destination for the data. Linux Errno To String In BSD and GNU, the number of open files is controlled by a resource limit that can usually be increased.

Level? navigate here This article shows all available error numbers along with it descriptions. On a Linux system with source installed, you can cd to /usr/src/linux*/kernel and do a grep -l for the symbolic constant you are interested in. UNIX is a registered trademark of The Open Group. Posix Error Codes

Macro: int EAFNOSUPPORT The address family specified for a socket is not supported; it is inconsistent with the protocol being used on the socket. Each of these drivers has "stubs.c" code -- code that gets linked into the kernel when the driver is _not_ present -- that returns ENOPKG for certain operations. The user running the program doesn't have permission to access a file, directory, and so forth.EAGAIN -- The required resource is temporarily unavailable; if you try the operation again later, it Check This Out Most implementations can't detect this (your program receives a SIGSEGFAULT signal and exit instead).EFBIG -- The request would cause a file to expand past the implementation-defined maximum file size.

So there is one errno for each thread. Errno.h In C Macro: int ENFILE There are too many distinct file openings in the entire system. Each process has OPEN_MAX file descriptors, and you're trying to open (OPEN_MAX + 1) files.

share|improve this answer answered Feb 28 '11 at 7:09 Keith 5,0911521 I did not unmount the card before removing it.

Or might not. A list of signals can be found in the signal man page (run "man signal"). Macro: int EPROGMISMATCH ??? Errno.h Windows This error happens on operations that are supposed to manipulate child processes, when there aren’t any processes to manipulate.

What would have happened to the world if the sepoy mutiny of 1857 had suceeded? Macro: int ERESTART Macro: int ECHRNG Macro: int EL2NSYNC Macro: int EL3HLT Macro: int EL3RST Macro: int ELNRNG Macro: int EUNATCH Macro: int ENOCSI Macro: int EL2HLT Macro: int EBADE Macro: In- stead, the pre-defined exit codes from sysexits should be used, so the caller of the process can get a rough estimation about the failure class without looking up the source this contact form Comments Close [x] developerWorks: Sign in Required fields are indicated with an asterisk (*).

For instance, many implementations of grep use an exit status of 2 to indicate an error, and use an exit status of 1 to mean that no selected lines were found. You can look at this file on your system to see the numerical values. Macro: int EDQUOT The user’s disk quota was exceeded. Macro: int ENOBUFS The kernel’s buffers for I/O operations are all in use.

Candidates include the System V shared memory driver ("shm"), the Xenix shared data driver ("xsd"), and the Advanced Power Management drivers ("uapm" and "pwr"). From the OpenBSD man page: According to style(9), it is not good practice to call exit(3) with arbi- trary values to indicate a failure condition when ending a program. This is used to indicate various kinds of problems with passing the wrong argument to a library function. Attempts to manipulate the object before the call completes return EALREADY.

TCP has the concept of "out of band data" (urgent data). A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. 2016-03-15 ERRNO(3) Copyright and license for this manual page HTML Error opening file: No such file or directory Error opening file: No such file or directoryAs you can see from the output (Listing 2), the perror() function displays the string you ELIBSCN0.385.lib section in a.out corrupted.81.lib section in a.out corrupted85.lib section in a.out corrupted.

The file was the wrong type for the operation, or a data file had the wrong format. In multithreaded programs it is a macro executing a function that returns the last error of the caller thread. add a comment| 4 Answers 4 active oldest votes up vote 5 down vote accepted There are standard error values, defined in errno.h. Macro: int EBADMSG Macro: int EIDRM Macro: int EMULTIHOP Macro: int ENODATA Macro: int ENOLINK Macro: int ENOMSG Macro: int ENOSR Macro: int ENOSTR Macro: int EOVERFLOW Macro: int EPROTO Macro:

For example, UNIX filesystems don't let you move a file between file systems (instead, you have to copy the file, then delete the original).One annoying feature of the POSIX 1003.1 specification I've seen that segmentation faults often result in an exit status of 11, though I don't know if this is simply the convention where I work (the apps that failed like