46 lines
1.3 KiB
Groff
46 lines
1.3 KiB
Groff
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.TH SOCKETPAIR 2
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.SH NAME
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socketpair \- creates a pair of connected sockets.
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.SH SYNOPSIS
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.ft B
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#include <sys/socket.h>
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.in +5
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.ti -5
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int socketpair(int \fIdomain\fP, int \fItype\fP, int \fIprotocol\fP, int \fIsv[2]\fP);
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.br
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.ft P
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.SH DESCRIPTION
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socketpair() creates two connected sockets of the specified \fItype\fP
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in the specified \fIdomain\fP using the specified \fIprotocol\fP and
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stores the two resulting socket descriptors in \fIsv[2]\fP.
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.SH RETURN VALUES
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On success, this function returns 0, and \fIsv[2]\fP is set to the two
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newly created socket descriptors. On error, -1 is returned and
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\fIerrno\fP is set.
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.SH ERRORS
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.TP 15
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[EAFNOSUPPORT]
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The \fIdomain\fP is not supported.
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.TP 15
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[EPROTOTYPE]
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The \fIprotocol\fP is not supported by the \fIdomain\fP.
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.TP 15
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[EPROTONOSUPPORT]
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The \fIprotocol\fP is not supported by the \fItype\fP.
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.TP 15
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[EINVAL]
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The pair of sockets aren't in a valid state or are not connection oriented sockets.
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.TP 15
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[EPERM]
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The user ID, group ID, and process ID of the first socket doesn't match that of the second.
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.SH NOTES
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This function is only implemented for unix domain sockets. Therefore,
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the only valid value for \fIdomain\fP is
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.B AF_UNIX
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.SH SEE ALSO
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.BR socket(2),
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.BR unix(8)
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.SH HISTORY
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This function first appeared in Minix 3.1.8.
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