1<sys/un.h>(0P) POSIX Programmer's Manual <sys/un.h>(0P)
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6 sys/un.h - definitions for UNIX domain sockets
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9 #include <sys/un.h>
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12 The <sys/un.h> header shall define the sockaddr_un structure that
13 includes at least the following members:
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16 sa_family_t sun_family Address family.
17 char sun_path[] Socket pathname.
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19 The sockaddr_un structure is used to store addresses for UNIX domain
20 sockets. Values of this type shall be cast by applications to struct
21 sockaddr for use with socket functions.
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23 The sa_family_t type shall be defined as described in <sys/socket.h> .
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25 The following sections are informative.
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28 The size of sun_path has intentionally been left undefined. This is
29 because different implementations use different sizes. For example, 4.3
30 BSD uses a size of 108, and 4.4 BSD uses a size of 104. Since most
31 implementations originate from BSD versions, the size is typically in
32 the range 92 to 108.
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34 Applications should not assume a particular length for sun_path or
35 assume that it can hold {_POSIX_PATH_MAX} characters (255).
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38 None.
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41 None.
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44 <sys/socket.h>, the System Interfaces volume of IEEE Std 1003.1-2001,
45 bind(), socket(), socketpair()
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48 Portions of this text are reprinted and reproduced in electronic form
49 from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
50 -- Portable Operating System Interface (POSIX), The Open Group Base
51 Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
52 Electrical and Electronics Engineers, Inc and The Open Group. In the
53 event of any discrepancy between this version and the original IEEE and
54 The Open Group Standard, the original IEEE and The Open Group Standard
55 is the referee document. The original Standard can be obtained online
56 at http://www.opengroup.org/unix/online.html .
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60IEEE/The Open Group 2003 <sys/un.h>(0P)