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 gethostname(SLIB)              6 January 1993              gethostname(SLIB)


 Name

    gethostname, sethostname - get/set name of current host

 Syntax


    int gethostname(name, namelen)
    char *name;
    int namelen;

    int sethostname(name, namelen)
    char *name;
    int namelen;


 Description

    gethostname returns the standard host name for the current processor, as
    previously set by sethostname.  The parameter namelen specifies the size
    of the name array.  The returned name is null-terminated unless insuffi-
    cient space is provided.

    sethostname sets the name of the host machine to be name, which has
    length namelen.  This call is restricted to the super-user and is nor-
    mally used only when the system is booted.

    If the call succeeds a value of zero is returned.  If the call fails, a
    value of -1 is returned and an error code is placed in the global vari-
    able errno.

 Errors

    The following errors may be returned by these calls:

    [EFAULT]  The name or namelen parameter gave an invalid address.

    [EPERM]   The caller tried to set the hostname and was not the super-
              user.

 Warning

    Host names are limited to MAXHOSTNAMELEN (from <sys/socket.h>) charac-
    ters, currently 64.