Open System Services System Calls Reference Manual (G06.29+, H06.08+, J06.03+)

System Functions (s and S) sendmsg64_(2)

ERRORS

If any of these conditions occurs, the sendmsg64_( ) function sets errno to the corresponding

value:

[EACCES] The socket is in the AF_UNIX domain and either search permission is denied for

a component of the pathname in the msghdr64 structure or write access to the

speciﬁed socket is denied.

[EAFNOSUPPORT]

Addresses in the speciﬁed address family cannot be used with this socket.

[EBADF] One of these conditions exists:

• The socket parameter is not a valid ﬁle descriptor.

• The socket is in the AF_UNIX domain, and one or more of the ﬁle

descriptors being passed is invalid.

[ECONNRESET]

One of these conditions occurred:

• The transport-provider process for this socket is no longer available.

• The TCP/IP subsystem for this socket is no longer available.

• The connection was forcibly closed by the peer socket.

The socket can only be closed.

[EDESTADDRREQ]

The socket is not connection-oriented, no peer address is set, and no destination

address is speciﬁed.

[EFAULT] A user-supplied memory buffer cannot be accessed.

[EINTR] A signal interrupted the function before any data was transmitted.

[EINVAL] One of these conditions occurred:

• The socket is in the AF_UNIX domain, and the msg_control member

contains either more than 16 ﬁle descriptors or fewer than 1 ﬁle descrip-

tor.

• The socket is in the AF_UNIX domain, and an attempt was made to

send more than one cmsghdr structure.

• The socket is in the AF_UNIX domain, and the value of the cmsg_len

member is not equal to the value of the msg_controllen member.

• The socket is in the AF_UNIX domain, and the cmsg_type member is

not equal to SCM_RIGHTS.

• The sum of the values speciﬁed for the msg_iovlen member of the

msghdr64 structure is too large for a long long data item.

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