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Posix Error Codes Errno.h

EBADFBad file number. This error is never generated by GNU/Hurd systems, but it can result from an operation to an NFS server running another operating system. ENOEXEC Exec format error (POSIX.1) ENOKEY Required key not available ENOLCK No locks available (POSIX.1) ENOLINK Link has been severed (POSIX.1) ENOMEDIUM No medium found ENOMEM Not enough space (POSIX.1) ENOMSG Macro: int ENETDOWN A socket operation failed because the network was down. his comment is here

Macro: int ERPCMISMATCH ??? The error can also occur in an attempt to rename a file or directory or to remove an existing directory. Thus, the errno value is not necessarily the same as the actual error code returned by a system call from the Windows operating systems. Some are defined by POSIX, and some are additional values. http://man7.org/linux/man-pages/man3/errno.3.html

Retrieved 27 February 2015. At program startup, the value stored is zero. Macro: int ENOTTY Inappropriate I/O control operation, such as trying to set terminal modes on an ordinary file.

This indicates an internal confusion in the file system which is due to file system rearrangements on the server host for NFS file systems or corruption in other file systems. The GNU C Library (glibc). Typically, this error occurs when you are trying to delete a directory. This condition is detected by the exec functions; see Executing a File.

However, on (very) old UNIX systems, there may be no and the declaration is needed. Each thread in a multi-threaded program has its own error value in its thread local storage. ELIBEXEC0.387Attempting to exec a shared library.83Cannot exec a shared library directly87Attempting to exec a shared library. http://pubs.opengroup.org/onlinepubs/009695399/basedefs/errno.h.html Macro: int ENODEV The wrong type of device was given to a function that expects a particular sort of device.

A temporary resource shortage made an operation impossible. Macro: int ENOMEM No memory available. Bibliography[edit] W. The file's permission setting does not allow the specified access.

Macro: int ETOOMANYREFS ??? More hints Do not do this. It will not work with modern versions of the C library. Macro: int EFAULT Bad address; an invalid pointer was detected.

Macro: int EISDIR File is a directory; you cannot open a directory for writing, or create or remove hard links to it. http://ismymailsecure.com/posix-error/posix-error-ios-7.html Copy #define E2BIG [argument list too long] #define EACCES [permission denied] #define EADDRINUSE [address in use] #define EADDRNOTAVAIL [address not available] #define EAFNOSUPPORT [address family not supported] #define EAGAIN [resource unavailable They are not yet documented. Users do not usually see this error because functions such as read and write translate it into a SIGTTIN or SIGTTOU signal.

Description: The errno variable is set to certain error values by many functions whenever an error has occurred. strtol("0xfffffffff",NULL,0) on systems with a 32-bit wide long EILSEQ (Required since 1994 Amendment 1 to C89 standard)[3] Results from an illegal byte sequence, e.g. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. weblink UNIX is a registered Trademark of The Open Group.

Macro: int ENOTSOCK A file that isn’t a socket was specified when a socket is required. See Sockets. 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.

Macro: int EALREADY An operation is already in progress on an object that has non-blocking mode selected.

You can use the select function to find out when the pending operation has completed; see Waiting for I/O. Macro: int EADDRNOTAVAIL The requested socket address is not available; for example, you tried to give a socket a name that doesn’t match the local host name. This change is for alignment with the ISO/IEC9899:1999 standard. Macro: int ECONNREFUSED A remote host refused to allow the network connection (typically because it is not running the requested service).

A few functions require the caller to preset errno to zero and test it afterwards to see if an error was detected. Macro: int ENOTCONN The socket is not connected to anything. E2BIG 7 Argument list is too long Yes EACCES 13 Permission denied Yes EADDRINUSE 248 Address is already in use Yes EADDRNOTAVAIL 249 Can't assign requested address Yes EADV 68 Advertise http://ismymailsecure.com/posix-error/posix-error-60.html Macro: int ENFILE There are too many distinct file openings in the entire system.

Attempts to manipulate the object before the call completes return EALREADY. You can use the -e option to procnto to specify the value of EALREADY_DYNAMIC: -eo Use the old value, which is the same as that of EBUSY. -en Use the POSIX-compliant No more space for writing is available on the device (for example, when the disk is full).ERANGEResult too large. The values for errno include at least the following.

RATIONALE None. Derived from Issue 1 of the SVID. This documentation is archived and is not being maintained. Richard, Stevens; Stephen A., Rago (May 24, 2013).

It defines macros for reporting and retrieving error conditions through error codes stored in a static memory location called errno (short for "error number").[1] A value (the error number) is stored I occasionally google C error codes, but always end up grepping through /usr/include to find the answer. Yes No Additional feedback? 1500 characters remaining Submit Skip this Thank you! Repairing this condition usually requires unmounting, possibly repairing and remounting the file system.

The system cannot allocate more virtual memory because its capacity is full. For example, the value given for the origin when positioning a file pointer (by means of a call to fseek) is before the beginning of the file.EMFILEToo many open files. Valid error numbers are all nonzero; errno is never set to zero by any system call or library function. 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:

Macro: int EHOSTUNREACH The remote host for a requested network connection is not reachable. See ASP.NET Ajax CDN Terms of Use – http://www.asp.net/ajaxlibrary/CDN.ashx. ]]> QNX Software Development Platform > Utilities & Libraries > The following error codes are defined by the Linux/i386 kernel. For functions that operate on some object given in a parameter, such as a file descriptor or a port, it might instead mean that only that specific object (file descriptor, port,

If the value of errno should be preserved across a library call, it must be saved: if (somecall() == -1) { int errsv = errno; printf("somecall() failed\n"); if (errsv == ...)