Open System Services System Calls Reference Manual (G06.25+, H06.03+)

sendmsg(2) OSS System Calls Reference Manual

[ENOMEM] Required memory resources were not available. A retry at a later time might

succeed.

[ENOPROTOOPT]

The socket is in the AF_UNIX domain, and the cmsg_level member is not equal

to SOL_SOCKET.

[ENOTCONN] The socket is connection-oriented but is not connected.

[ENOTDIR] The socket is in the AF_UNIX domain, and the pathname speciﬁed by the

msghdr structure contains a component that is not a directory.

[ENOTSOCK] The socket parameter does not refer to a socket.

[EOPNOTSUPP]

The speciﬁed value for the ﬂags parameter is not supported for this socket type

or protocol.

[EPIPE] One of these conditions occurred:

• An attempt was made to send a message on a socket that is shut down

for writing.

• An attempt was made to send a message on a connection-oriented

socket, and the peer socket is closed or shut down for reading. The SIG-

PIPE signal is also sent to the calling process.

[EWOULDBLOCK]

The socket ﬁle descriptor is marked nonblocking (O_NONBLOCK is set), and

the operation would block.

RELATED INFORMATION

Functions: getsockopt(2), recv(2), recvfrom(2), recvmsg(2), select(2), send(2), sendto(2), set-

sockopt(2), shutdown(2), socket(2), socketpair(2).

STANDARDS CONFORMANCE

The HP implementation does not return the errno value [ENOSR].

HP extensions to the XPG4 speciﬁcation are:

• The errno value [ECONNRESET] can be returned when the transport-provider process

is not available.

• The errno value [ENOPROTOOPT] can be returned.

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