100 lines
3.2 KiB
Groff
100 lines
3.2 KiB
Groff
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.\" Copyright (c) 1983, 1991 The Regents of the University of California.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)uname.2 6.6 (Berkeley) 3/10/91
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.\"
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.Dd March 29, 1993
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.Dt UNAME 2
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.Os Posix
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.Sh NAME
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.Nm uname
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.Nd get host information
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.Sh SYNOPSIS
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.Fd #include <sys/utsname.h>
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.Ft int
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.Fn uname "struct utsname *name"
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.Sh DESCRIPTION
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.Fn Uname
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returns the information identifying the current UNIX system
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in the structure pointed to by
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.Fa name.
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.Pp
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.Fn Uname
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uses the structure defined in
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.Aq Pa sys/utsname.h
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whose members are:
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.Bd -literal
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struct utsname {
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char sysname[SYS_NMLN];
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char nodename[SYS_NMLN];
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char release[SYS_NMLN];
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char version[SYS_NMLN];
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char machine[SYS_NMLN];
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};
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.Ed
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.Pp
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.Fn Uname
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returns a null-terminated character string naming the
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current UNIX system in the character array
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.Fa sysname .
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Similarly,
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.Fa nodename
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contains the name that the system is known by on a
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communication network.
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.Fa Release
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and
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.Fa version
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further identify the operating system.
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.Fa Machine
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contains the standard name that identifies the hardware
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that the UNIX system is running on.
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.Sn ERRORS
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.Bl -tag -width ENAMETOOLONGAA
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.It Bq Er EFAULT
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.Fn Uname
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will fail if
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.Fa name
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points to an invalid address.
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.Sh RETURN VALUE
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Upon successful completion a value of 0 is returned.
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Otherwise, a value of -1 is returned and
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.Va errno
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is set to indicate the error.
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.Sh SEE ALSO
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.Xr hostname 1 ,
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.Xr machine 1 ,
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.Xr gethostname 2
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.Sh HISTORY
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The
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.Nm uname
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function call appeared in
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System V.2 AT&T UNIX.
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