--- sysdep/bsd/check_carp.c | 102 +++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 102 insertions(+), 0 deletions(-) create mode 100644 sysdep/bsd/check_carp.c diff --git a/sysdep/bsd/check_carp.c b/sysdep/bsd/check_carp.c new file mode 100644 index 0000000..f6df437 --- /dev/null +++ b/sysdep/bsd/check_carp.c @@ -0,0 +1,102 @@ +/* $FreeBSD: src/sbin/ifconfig/ifcarp.c,v 1.2.24.2 2010/02/07 06:22:28 ru Exp $ */ +/* from $OpenBSD: ifconfig.c,v 1.82 2003/10/19 05:43:35 mcbride Exp $ */ + +/* + * Copyright (c) 2002 Michael Shalayeff. All rights reserved. + * Copyright (c) 2003 Ryan McBride. All rights reserved. + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * This was ifconfig.c and if_carp.c from FreeBSD 8.2. + * Modified to only return the state of an carp interface if there is any. + * Will return an 0 (zero) or greater if the interface is an carp interface + * and it is configured. Otherwise it returns an negativ number. + * This file should be possible to compile standalone with: + * 'gcc check_carp.c -o check_carp' + * without the if 0 in this source file. + */ + +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <net/if.h> +#include <netinet/ip_carp.h> +#include <stdio.h> +#include <string.h> + +int check_carp(const char *name, int namelen) { + static struct ifreq ifr; + + if (namelen > sizeof(ifr.ifr_name)) + return -4; + + memset(ifr.ifr_name, 0, sizeof(ifr.ifr_name)); + strncpy(ifr.ifr_name, name, namelen); + + ifr.ifr_addr.sa_family = AF_LOCAL; + + int s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0); + if (s < 0) { +// err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); + return -3; + } + + struct carpreq carpr; + + memset((char *)&carpr, 0, sizeof(struct carpreq)); + ifr.ifr_data = (caddr_t)&carpr; + + if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1) + return -2; + +#if 0 + fprintf(stderr, "carpr.carpr_vhid = %i \n", carpr.carpr_vhid); +#endif + +/* + carpr_state will/should return: + "INIT" == 0 + "BACKUP" == 1 + "MASTER" == 2 +*/ + if (carpr.carpr_vhid > 0) + return carpr.carpr_state; + else + return -1; +} + +#if 0 +int main(int argc, char **argv) { + int rc = check_carp("carp0", 5); + + printf("check_carp = %i\n", rc); + + return 0; +} +#endif + -- 1.7.3.5 --------------010500000801000408070709 Content-Type: text/x-patch; name="0002-Added-support-for-carp-validation-on-BSD.patch" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="0002-Added-support-for-carp-validation-on-BSD.patch"