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Annotation of src/lib/libc/gen/gethostname.3, Revision 1.8

1.8     ! garbled     1: .\"    $NetBSD: gethostname.3,v 1.7 1998/08/29 08:32:33 lukem Exp $
1.2       cgd         2: .\"
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                     34: .\"     @(#)gethostname.3      8.1 (Berkeley) 6/4/93
                     35: .\"
                     36: .Dd June 4, 1993
                     37: .Dt GETHOSTNAME 3
1.8     ! garbled    38: .Os
1.1       cgd        39: .Sh NAME
                     40: .Nm gethostname ,
                     41: .Nm sethostname
                     42: .Nd get/set name of current host
1.5       perry      43: .Sh LIBRARY
                     44: .Lb libc
1.1       cgd        45: .Sh SYNOPSIS
                     46: .Fd #include <unistd.h>
                     47: .Ft int
1.6       kleink     48: .Fn gethostname "char *name" "size_t namelen"
1.1       cgd        49: .Ft int
1.6       kleink     50: .Fn sethostname "const char *name" "size_t namelen"
1.1       cgd        51: .Sh DESCRIPTION
1.7       lukem      52: .Fn gethostname
1.1       cgd        53: returns the standard host name for the current processor, as
                     54: previously set by
                     55: .Fn sethostname .
                     56: The parameter
                     57: .Fa namelen
                     58: specifies the size of the
                     59: .Fa name
                     60: array.  The returned name is null-terminated unless insufficient
                     61: space is provided.
                     62: .Pp
1.7       lukem      63: .Fn sethostname
1.1       cgd        64: sets the name of the host machine to be
                     65: .Fa name ,
                     66: which has length
                     67: .Fa namelen .
                     68: This call is restricted to the super-user and
                     69: is normally used only when the system is bootstrapped.
                     70: .Sh RETURN VALUES
                     71: If the call succeeds a value of 0 is returned.  If the call
                     72: fails, a value of -1 is returned and an error code is
                     73: placed in the global location
                     74: .Va errno .
                     75: .Sh ERRORS
                     76: The following errors may be returned by these calls:
                     77: .Bl -tag -width Er
                     78: .It Bq Er EFAULT
                     79: The
                     80: .Fa name
                     81: or
                     82: .Fa namelen
                     83: parameter gave an
                     84: invalid address.
                     85: .It Bq Er EPERM
                     86: The caller tried to set the hostname and was not the super-user.
                     87: .El
                     88: .Sh SEE ALSO
1.4       jtc        89: .Xr sysctl 3 ,
                     90: .Xr gethostid 3 ,
1.3       neil       91: .Xr sysctl 8
1.6       kleink     92: .Sh STANDARDS
                     93: The
                     94: .Fn gethostname
                     95: function conforms to
                     96: .St -xpg4.2 .
1.1       cgd        97: .Sh BUGS
                     98: Host names are limited to
                     99: .Dv MAXHOSTNAMELEN
                    100: (from
                    101: .Ao Pa sys/param.h Ac )
1.6       kleink    102: characters including null-termination, currently 256.
1.1       cgd       103: .Sh HISTORY
                    104: The
                    105: .Nm
                    106: function call appeared in
                    107: .Bx 4.2 .