Some socket functions don’t make sense for all types of sockets, and others may not be implemented for all communications protocols. What is Eclipse, and how do I use it? (developerWorks, November 2001): Read this article for an introduction to the Eclipse platform. Running the C-shell or tcsh may give different values in some cases.
It would've been nice to have this covered in the specification in order to avoid doing this sort of thing.Listing 4. Skip to main content Your mobile solution provider on thousands of device models. Link bubrek November 3, 2010, 11:46 am i have to make stronge grip on C++ please help me by sending handout/notes and practices Link Cancel reply Leave a Comment Name Email Macro: int EISDIR File is a directory; you cannot open a directory for writing, or create or remove hard links to it. http://www-numi.fnal.gov/offline_software/srt_public_context/WebDocs/Errors/unix_system_errors.html
You can use select to find out when the operation will be possible; see Waiting for I/O. UNIX is a registered Trademark of The Open Group. On other OSes, $^E may give more relevant output than $! All values listed in this section are unique except as noted below.
See File Locks, for an example. It is probably a good idea to delay for a few seconds before trying it again, to allow time for other processes to release scarce resources. Note the ambiguity between EBUSY and EAGAIN; obviously you'd be able to remove the directory later, when the reading program has finished.ECHILD -- The wait() or waitpid() function tried to wait Linux Errno To String PerlMonks parthenogenetically spawned by Tim Vroom.
By the way, errno is not always a variable. Posix Error Codes Again, it's traditional for applications and the OS to not handle this gracefully.ENOSYS -- The system doesn't support that function. This article shows all available error numbers along with it descriptions. https://www.ibm.com/developerworks/aix/library/au-errnovariable/ Macro: int EFBIG File too big; the size of a file would be larger than allowed by the system.
If you're lucky, the function's man page lists all of its possible return values and what they mean in the context of this particular function. Errno.h In C Inside a C program, when a function fails, you should handle the errors accordingly, or at least record the errors in a log file. Attempts to manipulate the object before the call completes return EALREADY. On GNU/Hurd systems, this error never happens; you get a signal instead.
Macro: int EPIPE Broken pipe; there is no process reading from the other end of a pipe. Typically, this error occurs when you are trying to delete a directory. Linux Error Code Macro: int ENODEV The wrong type of device was given to a function that expects a particular sort of device. Linux Errno Example O_EXCL flag is used with O_CREAT, if the file is already exist open call will fail with the proper error number. $ cat fileopen.c #include
Hosting by jambit GmbH. navigate here This error may be reported on a subsequent operation on the same file descriptor. Link Felix Frank October 21, 2010, 8:16 am Hi, good thinking, but this article desperately lacks a reference to perror. Some functions that must always block (such as connect; see Connecting) never return EAGAIN. Bad File Number
You've tried to write to or create a file on a device that's full. getmsg() - a file descriptor was received instead of a control message. I think, in python solution, os.strerror is required.. –TheCottonSilk Mar 1 '11 at 5:28 @TheCottonSilk: Thanks, fixed. Check This Out When he's not playing with his son Alex or hanging out with his wife Lynette, Chris spends his spare time designing, writing, and researching (that is, playing) video games. 05 September
current community chat Unix & Linux Unix & Linux Meta your communities Sign up or log in to customize your list. Errno.h Windows The strerror function returns a string describing the error code passed in the argument errnum. The first is the number of standard error messages stored in sys_errlist.
Exit Codes With Special MeaningsTable E-1. Macro: int ETIMEDOUT A socket operation with a specified timeout received no response during the timeout period. The latest versions of Eclipse (3.2) and the CDT plug-ins (2.0) are packed with great, helpful features.Back to topError reporting in C programsC is the most commonly used programming language on Efault Macro: int ENOTCONN The socket is not connected to anything.
Users do not usually see this error because functions such as read and write translate it into a SIGTTIN or SIGTTOU signal. Macro: int EINTR Interrupted function call; an asynchronous signal occurred and prevented completion of the call. perror function prints error description in standard error. http://crimsonskysoftware.com/error-code/unix-error-46.html The system does not guarantee that it will notice all such situations.
I'm going to be working in Eclipse using the C/C++ Development Tooling (CDT). Is there any systematic way in Linux to track (& understand) the error codes (in the source) ? Macro: int EPROGMISMATCH ??? Macro: int EHOSTUNREACH The remote host for a requested network connection is not reachable.