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Posix File Error Codes

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Macro: int EINPROGRESS An operation that cannot complete immediately was initiated on an object that has non-blocking mode selected. Typically, this error occurs when you are trying to delete a directory. Macro: int EALREADY An operation is already in progress on an object that has non-blocking mode selected. You get this error when you try to transmit data over a socket, without first specifying a destination for the data. his comment is here

Macro: int EPERM Operation not permitted; only the owner of the file (or other resource) or processes with special privileges can perform the operation. Macro: int ENETUNREACH A socket operation failed because the subnet containing the remote host was unreachable. Macro: int EACCES Permission denied; the file permissions do not allow the attempted operation. In C programming language, there is an external variable called "errno". http://man7.org/linux/man-pages/man3/errno.3.html

Errno Codes

This often indicates a cycle of symbolic links. My focus is to write articles that will either teach you or help you resolve a problem. Macro: int ENOTSOCK A file that isn’t a socket was specified when a socket is required.

APPLICATION USAGE Additional error numbers may be defined on conforming systems; see the System Interfaces volume of IEEEStd1003.1-2001. You should should always use symbolic error code constants in your code, not number literals. 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 Errno.h In C ELIBSCN0.385.lib section in a.out corrupted.81.lib section in a.out corrupted85.lib section in a.out corrupted.

Instead, they return EINPROGRESS to indicate that the operation has begun and will take some time. Posix Error Codes Contact Us Email Me : Use this Contact Form to get in touch me with your comments, questions or suggestions about this site. Story about crystal flowers that stop time? cc perror.c -o perror << use this line to compile it share|improve this answer edited Nov 8 '12 at 0:35 Troy Alford 16.9k84668 answered Nov 1 '11 at 19:19 Johan Snowgoose

C libraries in many older Unix systems have EWOULDBLOCK as a separate error code. Strerror up vote 120 down vote favorite 33 When calling execl(...), I get an errno=2. E2BIG Argument list too long (POSIX.1) EACCES Permission denied (POSIX.1) EADDRINUSE Address already in use (POSIX.1) EADDRNOTAVAIL Address not available (POSIX.1) EAFNOSUPPORT Address family not supported (POSIX.1) EAGAIN Resource temporarily unavailable Duplicate descriptors do count toward this limit.

Posix Error Codes

If the entire function is not available at all in the implementation, it returns ENOSYS instead. http://www.ioplex.com/~miallen/errcmp.html But you gave nothing special more than formatting the contents of the linux errno headers. Errno Codes This is the same string printed by perror() but it's useful if you're formatting the error message for something other than standard error output. Linux Errno Example Macro: int EISCONN You tried to connect a socket that is already connected.

Macro: int ENOTDIR A file that isn’t a directory was specified when a directory is required. http://ismymailsecure.com/error-codes/pos-error-codes.html You can also simply drop me a line to say hello!. x x) has a type, then is the type system inconsistent? Macro: int EHOSTDOWN The remote host for a requested network connection is down. How To Use Errno

I occasionally google C error codes, but always end up grepping through /usr/include to find the answer. perror function prints error description in standard error. 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. http://ismymailsecure.com/error-codes/posix-socket-error-codes.html When you are running some program on Linux environment, you might notice that it gives some error number.

Macro: int EDIED On GNU/Hurd systems, opening a file returns this error when the file is translated by a program and the translator program dies while starting up, before it has Errno C++ In C programming language, return values represents success or failure. The following C code snippet tries to open a file through open system call.

Column 2 is a score that indicates the fraction of platforms on which the identifier is found (1 meaning all).

This condition is detected by the exec functions; see Executing a File. The following sections are informative. All of them expand into integer constant values. Errno To String Macro: int EDESTADDRREQ No default destination address was set for the socket.

Their values shall be unique except as noted below. [E2BIG] Argument list too long. [EACCES] Permission denied. [EADDRINUSE] Address in use. [EADDRNOTAVAIL] Address not available. [EAFNOSUPPORT] Address family not supported. [EAGAIN] Not the answer you're looking for? Macro: int EPIPE Broken pipe; there is no process reading from the other end of a pipe. http://ismymailsecure.com/error-codes/posix-standard-error-codes.html Macro: int ERPCMISMATCH ???

virtsync errno.h - C Error Codes in Linux All the Linux/C error codes are listed below. Macro: int ENEEDAUTH ??? 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 Macro: int ERANGE Range error; used by mathematical functions when the result value is not representable because of overflow or underflow.

ELIBEXEC0.387Attempting to exec a shared library.83Cannot exec a shared library directly87Attempting to exec a shared library. Macro: int EHOSTUNREACH The remote host for a requested network connection is not reachable. You really need to know what error number 17 means. There are two flags in the open call.

Macro: int ETIMEDOUT A socket operation with a specified timeout received no response during the timeout period. 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: Fill in the Minesweeper clues How to improve this plot? Macro: int EGRATUITOUS This error code has no purpose.

This is used by the file locking facilities; see File Locks. Portability Note: In many older Unix systems, this condition was indicated by EWOULDBLOCK, which was a distinct error code different from EAGAIN. errno is defined by the ISO C standard to be a modifiable lvalue of type int, and must not be explicitly declared; errno may be a macro.