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Annotation of src/lib/libc/gen/gethostname.3, Revision 1.2

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

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