toys/lsb/hostname.c

/* hostname.c - Get/Set the hostname
 *
 * Copyright 2012 Andre Renaud <andre@bluewatersys.com>
 *
 * http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/hostname.html

USE_HOSTNAME(NEWTOY(hostname, NULL, TOYFLAG_BIN))

config HOSTNAME
  bool "hostname"
  default y
  help
    usage: hostname [newname]

    Get/Set the current hostname
*/

#define FOR_hostname
#include "toys.h"

void hostname_main(void)
{
  const char *hostname = toys.optargs[0];
  if (hostname) {
    if (sethostname(hostname, strlen(hostname)))
      perror_exit("set failed '%s'", hostname);
  } else {
    if (gethostname(toybuf, sizeof(toybuf))) perror_exit("get failed");
    xputs(toybuf);
  }
}