mirror of https://github.com/mkerrisk/man-pages
70 lines
2.0 KiB
Plaintext
70 lines
2.0 KiB
Plaintext
.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
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.TH "<net/if.h>" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
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.\" <net/if.h>
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.SH NAME
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net/if.h \- sockets local interfaces
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.SH SYNOPSIS
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.LP
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\fB#include <net/if.h>\fP
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.SH DESCRIPTION
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.LP
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The \fI<net/if.h>\fP header shall define the \fBif_nameindex\fP structure
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that includes at least the following
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members:
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.sp
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.RS
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.nf
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\fBunsigned if_index \fP Numeric index of the interface. \fB
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char *if_name \fP Null-terminated name of the interface. \fB
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\fP
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.fi
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.RE
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.LP
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The \fI<net/if.h>\fP header shall define the following macro for the
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length of a buffer containing an interface name
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(including the terminating NULL character):
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.TP 7
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IF_NAMESIZE
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Interface name length.
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.sp
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.LP
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The following shall be declared as functions and may also be defined
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as macros. Function prototypes shall be provided.
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.sp
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.RS
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.nf
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\fBunsigned if_nametoindex(const char *);
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char *if_indextoname(unsigned, char *);
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struct if_nameindex *if_nameindex(void);
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void if_freenameindex(struct if_nameindex *);
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\fP
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.fi
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.RE
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.LP
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\fIThe following sections are informative.\fP
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.SH APPLICATION USAGE
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.LP
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None.
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.SH RATIONALE
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.LP
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None.
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.SH FUTURE DIRECTIONS
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.LP
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None.
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.SH SEE ALSO
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.LP
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The System Interfaces volume of IEEE\ Std\ 1003.1-2001, \fIif_freenameindex\fP(),
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\fIif_indextoname\fP(), \fIif_nameindex\fP(), \fIif_nametoindex\fP()
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.SH COPYRIGHT
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Portions of this text are reprinted and reproduced in electronic form
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from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
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-- Portable Operating System Interface (POSIX), The Open Group Base
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Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
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Electrical and Electronics Engineers, Inc and The Open Group. In the
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event of any discrepancy between this version and the original IEEE and
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The Open Group Standard, the original IEEE and The Open Group Standard
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is the referee document. The original Standard can be obtained online at
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http://www.opengroup.org/unix/online.html .
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