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Posix Socket Error Codes

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MSG_ERRQUEUE (since Linux 2.2) This flag specifies that queued errors should be received from the socket error queue. 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 See recvmmsg(2) for information about a Linux-specific system call that can be used to receive multiple datagrams in a single call. Thus, a subsequent receive call will return the same data. his comment is here

The macro EWOULDBLOCK is another name for EAGAIN; they are always the same in the GNU C Library. Macro: int ERPCMISMATCH ??? See Socket Options. For details of in-depth Linux/UNIX system programming training courses that I teach, look here.

Linux Errno Codes

See Sockets. Macro: int ENOTDIR A file that isn’t a directory was specified when a directory is required. MSG_TRUNC indicates that the trailing portion of a datagram was discarded because the datagram was larger than the buffer supplied. not avail EPROGMISMATCH0.375Program version wrong75Program version wrong75Program version wrong EPROCUNAVAIL0.376Bad procedure for program76Bad procedure for program76Bad procedure for program EFTYPE0.379Inappropriate file type or format79Inappropriate file type or format79Inappropriate file type or

See also accept(2). If a message is too long to fit in the supplied buffer, excess bytes may be discarded depending on the type of socket the message is received from. Macro: int EMFILE The current process has too many files open and can’t open any more. How To Use Errno The original destination address of the datagram that caused the error is supplied via msg_name.

It can contain several flags: MSG_EOR indicates end-of-record; the data returned completed a record (generally used with sockets of type SOCK_SEQPACKET). The error is passed in an ancillary message with a type dependent on the protocol (for IPv4 IP_RECVERR). Macro: int ENETRESET A network connection was reset because the remote host crashed. my site Macro: int EPROGUNAVAIL ???

Instead, they return EINPROGRESS to indicate that the operation has begun and will take some time. Strerror Macro: int EHOSTDOWN The remote host for a requested network connection is down. Star 17 Fork 13 gabrielfalcao/gist:4216897 Created Dec 5, 2012 Embed What would you like to do? However, on (very) old UNIX systems, there may be no and the declaration is needed.

Posix Error Codes

noname007 commented Sep 13, 2016 👍 Sign up for free to join this conversation on GitHub. MSG_OOB is returned to indicate that expedited or out-of-band data were received. Linux Errno Codes Macro: int ESRCH No process matches the specified process ID. Linux Errno Example This structure is defined as follows in : struct iovec { /* Scatter/gather array items */ void *iov_base; /* Starting address */ size_t iov_len; /* Number of bytes to transfer */

The user should supply a buffer of sufficient size. http://ismymailsecure.com/error-codes/pos-error-codes.html Thus, your program will never actually see EPIPE unless it has handled or blocked SIGPIPE. Macro: int EDQUOT The user’s disk quota was exceeded. The present socklen_t * was invented by POSIX. Errno.h In C

You can use select to find out when the operation will be possible; see Waiting for I/O. MSG_CTRUNC indicates that some control data were discarded due to lack of space in the buffer for ancillary data. The messages are of the form: struct cmsghdr { socklen_t cmsg_len; /* data byte count, including hdr */ int cmsg_level; /* originating protocol */ int cmsg_type; /* protocol-specific type */ /* http://ismymailsecure.com/error-codes/posix-standard-error-codes.html The error is supplied in a sock_extended_err structure: #define SO_EE_ORIGIN_NONE 0 #define SO_EE_ORIGIN_LOCAL 1 #define SO_EE_ORIGIN_ICMP 2 #define SO_EE_ORIGIN_ICMP6 3 struct sock_extended_err { uint32_t ee_errno; /* error number */ uint8_t ee_origin;

This often indicates a cycle of symbolic links. Errno C++ However, the call may still return less data than requested if a signal is caught, an error or disconnect occurs, or the next data to be received is of a different As an example, Linux uses this ancillary data mechanism to pass extended errors, IP options, or file descriptors over UNIX domain sockets.

A temporary resource shortage made an operation impossible.

This can mean that the device file was installed incorrectly, or that the physical device is missing or not correctly attached to the computer. Macro: int ENODEV The wrong type of device was given to a function that expects a particular sort of device. Macro: int ECONNREFUSED A remote host refused to allow the network connection (typically because it is not running the requested service). Errno 0 Macro: int EUSERS The file quota system is confused because there are too many users.

The payload of the packet that caused the error is passed as normal data. Macro: int ENOMEM No memory available. Notes The prototypes given above follow glibc2. check over here Macro: int ECHILD There are no child processes.

The Single UNIX Specification agrees, except that it has return values of type ssize_t (while 4.x BSD and libc4 and libc5 all have int). The flags argument is int in 4.x BSD, but unsigned int in libc4 and libc5. The returned address is truncated if the buffer provided is too small; in this case, addrlen will return a value greater than was supplied to the call. The payload of the packet that caused the error is passed as normal data.

On GNU/Hurd systems, this error can happen for many calls when the object does not support the particular operation; it is a generic indication that the server knows nothing to do A function returns this error when certain parameter values are valid, but the functionality they request is not available. When you get this error, you can be sure that this particular function will always fail with ENOSYS unless you install a new version of the C library or the operating This is a “file doesn’t exist” error for ordinary files that are referenced in contexts where they are expected to already exist.

They are not yet documented. You get this error when you try to transmit data over a connectionless socket, without first specifying a destination for the data with connect. For error receives, the MSG_ERRQUEUE is set in the msghdr. 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 ENAMETOOLONG Filename too long (longer than PATH_MAX; see Limits for Files) or host name too long (in gethostname or sethostname; see Host Identification). ENOBUFS No buffer space available (POSIX.1 (XSI STREAMS option)) ENODATA No message is available on the STREAM head read queue (POSIX.1) ENODEV No such device (POSIX.1) ENOENT No such file or errno values are set when the return code is negative. The error is supplied in a sock_extended_err structure: #define SO_EE_ORIGIN_NONE 0 #define SO_EE_ORIGIN_LOCAL 1 #define SO_EE_ORIGIN_ICMP 2 #define SO_EE_ORIGIN_ICMP6 3 struct sock_extended_err { uint32_t ee_errno; /* error number */ uint8_t ee_origin;