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Linux Socket Error Codes


EINVAL Invalid argument passed. Looking up error codes manually is ill advise IMO. They are recorded in:- /usr/include/asm/errno.h Here is a copy of that file as of Aug 2004 on RedHat 7.3 #define EPERM 1 /* Operation not permitted */ #define ENOENT 2 /* All of them expand into integer constant values. http://softacoustik.com/error-codes/linux-io-error-codes.php

asked 1 year ago viewed 1586 times active 1 year ago Related 48Get IP address of an interface on Linux13Find original owning process of a Linux socket1Data is not received correctly Macro: int ESOCKTNOSUPPORT The socket type is not supported. MSG_MORE (Since Linux 2.4.4) The caller has more data to send. Often using a debugger to run a program is considered having it open for writing and will cause this error. (The name stands for “text file busy”.) This is not an http://www.virtsync.com/c-error-codes-include-errno

Linux Errno Example

For example, trying to mount an ordinary file as a file system in Unix gives this error. POSIX.1-2001 only describes the MSG_OOB and MSG_EOR flags. Macro: int ENEEDAUTH ??? Macro: int ENOEXEC Invalid executable file format.

A stream socket must be in a connected state before any data may be sent or received on it. ERRORS top EACCES Permission to create a socket of the specified type and/or protocol is denied. For sendmsg(), the address of the target is given by msg.msg_name, with msg.msg_namelen specifying its size. How To Use Errno Macro: int ENOTDIR A file that isn’t a directory was specified when a directory is required.

They do not preserve record boundaries. Errno.h In C The protocol specifies a particular protocol to be used with the socket. This condition never arises on GNU/Hurd systems. The system tried to use the device represented by a file you specified, and it couldn’t find the device.

All rights reserved | Terms of Service man7.org > Linux > man-pages Linux/UNIX system programming training NAME | SYNOPSIS | DESCRIPTION | NOTES | SEEALSO | COLOPHON ERRNO(3) Linux Programmer's Manual Posix Error Codes This indicates that the function called is not implemented at all, either in the C library itself or in the operating system. EPIPE The local end has been shut down on a connection oriented socket. The flags argument is the bitwise OR of zero or more of the following flags.

Errno.h In C

Macro: int EOPNOTSUPP The operation you requested is not supported. This can mean that the device file was installed incorrectly, or that the physical device is missing or not correctly attached to the computer. Linux Errno Example The sendmsg() call also allows sending ancillary data (also known as control information). Errno.h Windows These function calls appeared in 4.2BSD.

There are two flags in the open call. this page A function returns this error when certain parameter values are valid, but the functionality they request is not available. To make your program portable, you should check for both codes and treat them the same. To understand the nature of the error these codes need to be interpreted. Errno 0

It indicates that the shortage is expected to pass, so your program can try the call again later and it may succeed. See Connecting. HTTPS Learn more about clone URLs Download ZIP Code Revisions 1 Stars 17 Forks 13 TCP socket error codes Raw gistfile1.txt 0 = Success 1 = Operation not permitted 2 = get redirected here man7.org > Linux > man-pages Linux/UNIX system programming training NAME | SYNOPSIS | DESCRIPTION | RETURNVALUE | ERRORS | CONFORMINGTO | NOTES | EXAMPLE | SEEALSO | COLOPHON SOCKET(2) Linux Programmer's

Macro: int EFBIG File too big; the size of a file would be larger than allowed by the system. Errno To String Also all message boundaries in incoming datagrams are preserved. See Socket Addresses.

If the link layer doesn't get this it will regularly reprobe the neighbor (e.g., via a unicast ARP).

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 == ...) Macro: int EISDIR File is a directory; you cannot open a directory for writing, or create or remove hard links to it. Macro: int EPROCLIM This means that the per-user limit on new process would be exceeded by an attempted fork. Errno C++ My focus is to write articles that will either teach you or help you resolve a problem.

Macro: int EALREADY An operation is already in progress on an object that has non-blocking mode selected. 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. Macro: int ERANGE Range error; used by mathematical functions when the result value is not representable because of overflow or underflow. useful reference Macro: int ENOTSUP Not supported.

Macro: int EAGAIN Resource temporarily unavailable; the call might work if you try again later. The AF_ALG protocol type was added in Linux 2.6.38. SOCK_PACKET Obsolete and should not be used in new programs; see packet(7). Macro: int ECONNABORTED A network connection was aborted locally.

Why did Fudge and the Weasleys come to the Leaky Cauldron in the PoA? A temporary resource shortage made an operation impossible. SEE ALSO top errno(1), err(3), error(3), perror(3), strerror(3) COLOPHON top This page is part of release 4.08 of the Linux man-pages project. 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.

For details of in-depth Linux/UNIX system programming training courses that I teach, look here. This article shows all available error numbers along with it descriptions. Sign in to comment Contact GitHub API Training Shop Blog About © 2016 GitHub, Inc. Macro: int EILSEQ While decoding a multibyte character the function came along an invalid or an incomplete sequence of bytes or the given wide character is invalid.

I occasionally google C error codes, but always end up grepping through /usr/include to find the answer. See sendmmsg(2) for information about a Linux-specific system call that can be used to transmit multiple datagrams in a single call. It will allocate the addrinfo for you, which you pass to freeaddrinfo() to free it: result = NULL; iResult = getaddrinfo(..., &result); if (iResult == 0) { ...; freeaddrinfo(result); } –Remy struct msghdr { void *msg_name; /* optional address */ socklen_t msg_namelen; /* size of address */ struct iovec *msg_iov; /* scatter/gather array */ size_t msg_iovlen; /* # elements in msg_iov */

Macro: int ESRCH No process matches the specified process ID. Macro: int EINVAL Invalid argument. 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. In multithreaded programs it is a macro executing a function that returns the last error of the caller thread.

This can mean that the function does not implement a particular command or option value or flag bit at all.