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Re: [libvirt] [PATCH 1/2] v3: put dnsmasq parameters into a file instead of the command line



On 10/23/2012 11:07 AM, Gene Czarcinski wrote:
> This patch changes the way parameters are passed to dnsmasq.  They are
> put into a conf-file instead of being on the dnsmasq command line.

I was thinking about this last night after I learned from you that the
conf file *isn't* reread when dnsmasq received SIGHUP. That being the
case, what are the other reasons for switching from commandline to conf
file? I suppose one is that it eliminates clutter in the ps output (and
gets it away from prying eyes (since anyone can see the commandline by
looking in the output of ps -AlF). Another would be it avoids hitting
the commandline limit (which is rather large, but still exists) when
there are a lot of srv and txt entries. Anything else?

>
> **NOTE ** This has updated the related tests for the new
> data format, etc.
>
> **NOTE** This patch does NOT include specifying interface=
>
> The command line now contains --conf-file=<filename> and a new
> parameter --conf-dir=<directoryname> has been added.
>
> The new file and directory are put in the same directory as the
> leases file.
> ---
>  src/network/bridge_driver.c                        | 179 ++++++++++++++-------
>  src/network/bridge_driver.h                        |   8 +-
>  tests/networkxml2argvdata/isolated-network.argv    |  24 +--
>  .../networkxml2argvdata/nat-network-dns-hosts.argv |  14 +-
>  .../nat-network-dns-srv-record-minimal.argv        |  35 ++--
>  .../nat-network-dns-srv-record.argv                |  35 ++--
>  .../nat-network-dns-txt-record.argv                |  29 ++--
>  tests/networkxml2argvdata/nat-network.argv         |  27 ++--
>  tests/networkxml2argvdata/netboot-network.argv     |  28 ++--
>  .../networkxml2argvdata/netboot-proxy-network.argv |  25 +--
>  tests/networkxml2argvdata/routed-network.argv      |  12 +-
>  tests/networkxml2argvtest.c                        |  44 +----
>  12 files changed, 264 insertions(+), 196 deletions(-)
>
> diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
> index 8837843..ab13df5 100644
> --- a/src/network/bridge_driver.c
> +++ b/src/network/bridge_driver.c
> @@ -136,6 +136,16 @@ networkDnsmasqLeaseFileNameFunc networkDnsmasqLeaseFileName =
>      networkDnsmasqLeaseFileNameDefault;
>  
>  static char *
> +networkDnsmasqConfigFileName(const char *netname)
> +{
> +    char *conffile;
> +
> +    ignore_value(virAsprintf(&conffile, DNSMASQ_STATE_DIR "/%s.conf",
> +                             netname));
> +    return conffile;
> +}
> +
> +static char *
>  networkRadvdPidfileBasename(const char *netname)
>  {
>      /* this is simple but we want to be sure it's consistently done */
> @@ -559,23 +569,25 @@ networkBuildDnsmasqHostsfile(dnsmasqContext *dctx,
>      return 0;
>  }
>  
> -
> +        /* build the dnsmasq conf file contents */
>  static int
> -networkBuildDnsmasqArgv(virNetworkObjPtr network,
> +networkDnsmasqConfContents(virNetworkObjPtr network, 
>                          virNetworkIpDefPtr ipdef,
>                          const char *pidfile,
> -                        virCommandPtr cmd,
> +                        char **configstr,
>                          dnsmasqContext *dctx)
>  {
> -    int r, ret = -1;
> +    virBuffer configbuf = VIR_BUFFER_INITIALIZER;;
> +    int r, ret = -1, ii;
>      int nbleases = 0;
> -    int ii;
>      char *record = NULL;
>      char *recordPort = NULL;
>      char *recordWeight = NULL;
>      char *recordPriority = NULL;
>      virNetworkIpDefPtr tmpipdef;
>  
> +    *configstr = NULL;
> +
>      /*
>       * NB, be careful about syntax for dnsmasq options in long format.
>       *
> @@ -595,28 +607,22 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network,
>       * very explicit on this.
>       */
>  
> -    /*
> -     * Needed to ensure dnsmasq uses same algorithm for processing
> -     * multiple namedriver entries in /etc/resolv.conf as GLibC.
> -     */
> -    virCommandAddArgList(cmd, "--strict-order", "--bind-interfaces", NULL);
> -
> +    /* create dnsmasq config file appropriate for this network */
> +    virBufferAsprintf(&configbuf, "# dnsmasq conf file created by libvirt\n"
> +                        "strict-order\n"
> +                        "bind-interfaces\n"
> +                        "except-interface=lo\n"
> +                        "domain-needed\n"
> +                        "local=/%s/\n",
> +                        network->def->domain ? network->def->domain : "");
>      if (network->def->domain)
> -        virCommandAddArgPair(cmd, "--domain", network->def->domain);
> -    /* need to specify local even if no domain specified */
> -    virCommandAddArgFormat(cmd, "--local=/%s/",
> -                           network->def->domain ? network->def->domain : "");
> -    virCommandAddArg(cmd, "--domain-needed");
> +        virBufferAsprintf(&configbuf, 
> +                "domain=%s\n"
> +                "expand-hosts\n",
> +                network->def->domain);
>  
>      if (pidfile)
> -        virCommandAddArgPair(cmd, "--pid-file", pidfile);
> -
> -    /* *no* conf file */
> -    virCommandAddArg(cmd, "--conf-file=");
> -
> -    virCommandAddArgList(cmd,
> -                         "--except-interface", "lo",
> -                         NULL);
> +        virBufferAsprintf(&configbuf, "pid-file=%s\n", pidfile);
>  
>      /* If this is an isolated network, set the default route option
>       * (3) to be empty to avoid setting a default route that's
> @@ -626,16 +632,21 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network,
>       * to build a connection to the outside).
>       */
>      if (network->def->forwardType == VIR_NETWORK_FORWARD_NONE) {
> -        virCommandAddArgList(cmd, "--dhcp-option=3",
> -                             "--no-resolv", NULL);
> +        virBufferAsprintf(&configbuf, "dhcp-option=3\n"
> +                                      "no-resolv\n");
>      }
>  
> +    /*
> +     * Needed to ensure dnsmasq uses same algorithm for processing
> +     * multiple namedriver entries in /etc/resolv.conf as GLibC.
> +     */
> +
>      if (network->def->dns != NULL) {
>          virNetworkDNSDefPtr dns = network->def->dns;
>          int i;
>  
>          for (i = 0; i < dns->ntxtrecords; i++) {
> -            virCommandAddArgFormat(cmd, "--txt-record=%s,%s",
> +            virBufferAsprintf(&configbuf, "txt-record=%s,%s\n",
>                                     dns->txtrecords[i].name,
>                                     dns->txtrecords[i].value);
>          }
> @@ -673,7 +684,7 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network,
>                      goto cleanup;
>                  }
>  
> -                virCommandAddArgPair(cmd, "--srv-host", record);
> +                virBufferAsprintf(&configbuf, "srv-host=%s\n", record);
>                  VIR_FREE(record);
>                  VIR_FREE(recordPort);
>                  VIR_FREE(recordWeight);
> @@ -682,21 +693,14 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network,
>          }
>      }
>  
> -    /*
> -     * --interface does not actually work with dnsmasq < 2.47,
> -     * due to DAD for ipv6 addresses on the interface.
> -     *
> -     * virCommandAddArgList(cmd, "--interface", ipdef->bridge, NULL);
> -     *
> -     * So listen on all defined IPv[46] addresses
> -     */
>      for (ii = 0;
>           (tmpipdef = virNetworkDefGetIpByIndex(network->def, AF_UNSPEC, ii));
> -         ii++) {
> +         ii++)
> +    {
>          char *ipaddr = virSocketAddrFormat(&tmpipdef->address);
>          if (!ipaddr)
>              goto cleanup;
> -        virCommandAddArgList(cmd, "--listen-address", ipaddr, NULL);
> +        virBufferAsprintf(&configbuf, "listen-address=%s\n", ipaddr);
>          VIR_FREE(ipaddr);
>      }
>  
> @@ -710,8 +714,8 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network,
>                  VIR_FREE(saddr);
>                  goto cleanup;
>              }
> -            virCommandAddArg(cmd, "--dhcp-range");
> -            virCommandAddArgFormat(cmd, "%s,%s", saddr, eaddr);
> +            virBufferAsprintf(&configbuf, "dhcp-range=%s,%s\n",
> +                                        saddr, eaddr);
>              VIR_FREE(saddr);
>              VIR_FREE(eaddr);
>              nbleases += virSocketAddrGetRange(&ipdef->ranges[r].start,
> @@ -727,8 +731,7 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network,
>              char *bridgeaddr = virSocketAddrFormat(&ipdef->address);
>              if (!bridgeaddr)
>                  goto cleanup;
> -            virCommandAddArg(cmd, "--dhcp-range");
> -            virCommandAddArgFormat(cmd, "%s,static", bridgeaddr);
> +            virBufferAsprintf(&configbuf, "dhcp-range=%s,static\n", bridgeaddr);
>              VIR_FREE(bridgeaddr);
>          }
>  
> @@ -736,17 +739,13 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network,
>              char *leasefile = networkDnsmasqLeaseFileName(network->def->name);
>              if (!leasefile)
>                  goto cleanup;
> -            virCommandAddArgFormat(cmd, "--dhcp-leasefile=%s", leasefile);
> +            virBufferAsprintf(&configbuf, "dhcp-leasefile=%s\n", leasefile);
>              VIR_FREE(leasefile);
> -            virCommandAddArgFormat(cmd, "--dhcp-lease-max=%d", nbleases);
> +            virBufferAsprintf(&configbuf, "dhcp-lease-max=%d\n", nbleases);
>          }
>  
>          if (ipdef->nranges || ipdef->nhosts)
> -            virCommandAddArg(cmd, "--dhcp-no-override");
> -
> -        /* add domain to any non-qualified hostnames in /etc/hosts or addn-hosts */
> -        if (network->def->domain)
> -           virCommandAddArg(cmd, "--expand-hosts");
> +            virBufferAsprintf(&configbuf, "dhcp-no-override\n");
>  
>          if (networkBuildDnsmasqHostsfile(dctx, ipdef, network->def->dns) < 0)
>              goto cleanup;
> @@ -756,38 +755,42 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network,
>           * file to allow for runtime additions.
>           */
>          if (ipdef->nranges || ipdef->nhosts)
> -            virCommandAddArgPair(cmd, "--dhcp-hostsfile",
> +            virBufferAsprintf(&configbuf, "dhcp-hostsfile=%s\n",
>                                   dctx->hostsfile->path);
>  
>          /* Likewise, always create this file and put it on the commandline, to allow for
>           * for runtime additions.
>           */
> -        virCommandAddArgPair(cmd, "--addn-hosts",
> +        virBufferAsprintf(&configbuf, "addn-hosts=%s\n",
>                               dctx->addnhostsfile->path);
>  
>          if (ipdef->tftproot) {
> -            virCommandAddArgList(cmd, "--enable-tftp",
> -                                 "--tftp-root", ipdef->tftproot,
> -                                 NULL);
> +            virBufferAsprintf(&configbuf, "enable-tftp\n");
> +            virBufferAsprintf(&configbuf, "tftp-root=%s\n", ipdef->tftproot);
>          }
>          if (ipdef->bootfile) {
> -            virCommandAddArg(cmd, "--dhcp-boot");
>              if (VIR_SOCKET_ADDR_VALID(&ipdef->bootserver)) {
>                  char *bootserver = virSocketAddrFormat(&ipdef->bootserver);
>  
>                  if (!bootserver)
>                      goto cleanup;
> -                virCommandAddArgFormat(cmd, "%s%s%s",
> +                virBufferAsprintf(&configbuf, "dhcp-boot=%s%s%s\n",
>                                         ipdef->bootfile, ",,", bootserver);
>                  VIR_FREE(bootserver);
>              } else {
> -                virCommandAddArg(cmd, ipdef->bootfile);
> +                virBufferAsprintf(&configbuf, "dhcp-boot=%s\n", ipdef->bootfile);
>              }
>          }
>      }
> +    if (!(*configstr = virBufferContentAndReset(&configbuf))) {
> +        virReportOOMError();
> +        goto cleanup;
> +    }
>  
>      ret = 0;
> +
>  cleanup:
> +    virBufferFreeAndReset(&configbuf);
>      VIR_FREE(record);
>      VIR_FREE(recordPort);
>      VIR_FREE(recordWeight);
> @@ -795,13 +798,18 @@ cleanup:
>      return ret;
>  }
>  
> +        /* build the dnsmasq command line */
>  int
>  networkBuildDhcpDaemonCommandLine(virNetworkObjPtr network, virCommandPtr *cmdout,
> -                                  char *pidfile, dnsmasqContext *dctx)
> +                                  char *pidfile, dnsmasqContext *dctx,
> +                                  char *configdir,
> +                                  int testOnly, char **testConfigStr)
>  {
>      virCommandPtr cmd = NULL;
>      int ret = -1, ii;
>      virNetworkIpDefPtr ipdef;
> +    char *configfile = NULL;
> +    char *configstr = NULL;
>  
>      network->dnsmasqPid = -1;
>  
> @@ -825,15 +833,41 @@ networkBuildDhcpDaemonCommandLine(virNetworkObjPtr network, virCommandPtr *cmdou
>      if (!virNetworkDefGetIpByIndex(network->def, AF_UNSPEC, 0))
>          return 0;
>  
> -    cmd = virCommandNew(DNSMASQ);
> -    if (networkBuildDnsmasqArgv(network, ipdef, pidfile, cmd, dctx) < 0) {
> +    if (networkDnsmasqConfContents(network, ipdef, pidfile, &configstr, dctx) < 0)
> +        goto cleanup;
> +    if (!configstr)
> +        goto cleanup;
> +
> +    if (testOnly) {
> +        *testConfigStr = configstr;
> +        return 0;
> +    }
> +
> +    /* construct the filename */
> +    if (!(configfile = networkDnsmasqConfigFileName(network->def->name))) {
> +        virReportOOMError();
> +        goto cleanup;
> +    }
> +
> +    /* Write the file */
> +    if (virFileWriteStr(configfile, configstr, 0600) < 0) {
> +        virReportSystemError(errno,
> +                         _("couldn't write dnsmasq config file '%s'"),
> +                         configfile);
>          goto cleanup;
>      }
> +    VIR_INFO("dnsmasq conf file %s written", configfile);
> +
> +    cmd = virCommandNew(DNSMASQ);
> +    virCommandAddArgFormat(cmd, "--conf-file=%s", configfile);
> +    virCommandAddArgFormat(cmd, "--conf-dir=%s", configdir);
>  
>      if (cmdout)
>          *cmdout = cmd;
>      ret = 0;
>  cleanup:
> +    VIR_FREE(configstr);
> +    VIR_FREE(configfile);
>      if (ret < 0)
>          virCommandFree(cmd);
>      return ret;
> @@ -844,9 +878,12 @@ networkStartDhcpDaemon(virNetworkObjPtr network)
>  {
>      virCommandPtr cmd = NULL;
>      char *pidfile = NULL;
> +    char *testconfigstr = NULL;
> +    char *configdir = NULL;
>      int ret = -1;
>      dnsmasqContext *dctx = NULL;
>  
> +    VIR_INFO("starting dhcp daemon (dnsmasq)");
>      if (!virNetworkDefGetIpByIndex(network->def, AF_UNSPEC, 0)) {
>          /* no IPv6 addresses, so we don't need to run radvd */
>          ret = 0;
> @@ -882,7 +919,18 @@ networkStartDhcpDaemon(virNetworkObjPtr network)
>      if (dctx == NULL)
>          goto cleanup;
>  
> -    ret = networkBuildDhcpDaemonCommandLine(network, &cmd, pidfile, dctx);
> +    ignore_value(virAsprintf(&configdir, DNSMASQ_STATE_DIR "/%s.d",
> +                             network->def->name));
> +    if (virFileMakePath(configdir) < 0) {
> +        virReportSystemError(errno,
> +                             _("cannot create directory %s"),
> +                             configdir);
> +        goto cleanup;
> +    }
> +
> +
> +    ret = networkBuildDhcpDaemonCommandLine(network, &cmd, pidfile, dctx,
> +                                            configdir, 0, &testconfigstr);
>      if (ret < 0)
>          goto cleanup;
>  
> @@ -911,6 +959,7 @@ networkStartDhcpDaemon(virNetworkObjPtr network)
>      ret = 0;
>  cleanup:
>      VIR_FREE(pidfile);
> +    VIR_FREE(configdir);
>      virCommandFree(cmd);
>      dnsmasqContextFree(dctx);
>      return ret;
> @@ -2841,6 +2890,14 @@ static int networkUndefine(virNetworkPtr net) {
>          }
>      }
>  
> +    {
> +        char *configfile = networkDnsmasqConfigFileName(network->def->name);
> +        if (!configfile)
> +            goto cleanup;
> +        unlink(configfile);
> +        VIR_FREE(configfile);
> +    }
> +
>      if (dhcp_present) {
>          char *leasefile;
>          dnsmasqContext *dctx = dnsmasqContextNew(network->def->name, DNSMASQ_STATE_DIR);
> diff --git a/src/network/bridge_driver.h b/src/network/bridge_driver.h
> index 0fae275..00675c4 100644
> --- a/src/network/bridge_driver.h
> +++ b/src/network/bridge_driver.h
> @@ -48,15 +48,17 @@ int networkGetNetworkAddress(const char *netname, char **netaddr)
>  
>  int networkBuildDhcpDaemonCommandLine(virNetworkObjPtr network,
>                                        virCommandPtr *cmdout, char *pidfile,
> -                                      dnsmasqContext *dctx)
> -    ;
> +                                      dnsmasqContext *dctx,
> +                                      char *configdir,
> +                                      int testOnly, char **testConfigStr);
>  # else
>  /* Define no-op replacements that don't drag in any link dependencies.  */
>  #  define networkAllocateActualDevice(iface) 0
>  #  define networkNotifyActualDevice(iface) 0
>  #  define networkReleaseActualDevice(iface) 0
>  #  define networkGetNetworkAddress(netname, netaddr) (-2)
> -#  define networkBuildDhcpDaemonCommandLine(network, cmdout, pidfile, dctx) 0
> +#  define networkBuildDhcpDaemonCommandLine(network, cmdout, pidfile, \
> +                dctx, configdir, testOnly, testConfigStr) 0
>  # endif
>  
>  typedef char *(*networkDnsmasqLeaseFileNameFunc)(const char *netname);
> diff --git a/tests/networkxml2argvdata/isolated-network.argv b/tests/networkxml2argvdata/isolated-network.argv
> index 13e77b2..042158b 100644
> --- a/tests/networkxml2argvdata/isolated-network.argv
> +++ b/tests/networkxml2argvdata/isolated-network.argv
> @@ -1,9 +1,15 @@
> - DNSMASQ@ --strict-order --bind-interfaces \
> ---local=// --domain-needed --conf-file= \
> ---except-interface lo --dhcp-option=3 --no-resolv \
> ---listen-address 192.168.152.1 \
> ---dhcp-range 192.168.152.2,192.168.152.254 \
> ---dhcp-leasefile=/var/lib/libvirt/dnsmasq/private.leases --dhcp-lease-max=253 \
> ---dhcp-no-override \
> ---dhcp-hostsfile=/var/lib/libvirt/dnsmasq/private.hostsfile \
> ---addn-hosts=/var/lib/libvirt/dnsmasq/private.addnhosts\
> +# dnsmasq conf file created by libvirt
> +strict-order
> +bind-interfaces
> +except-interface=lo
> +domain-needed
> +local=//
> +dhcp-option=3
> +no-resolv
> +listen-address=192.168.152.1
> +dhcp-range=192.168.152.2,192.168.152.254
> +dhcp-leasefile=/var/lib/libvirt/dnsmasq/private.leases
> +dhcp-lease-max=253
> +dhcp-no-override
> +dhcp-hostsfile=/var/lib/libvirt/dnsmasq/private.hostsfile
> +addn-hosts=/var/lib/libvirt/dnsmasq/private.addnhosts
> diff --git a/tests/networkxml2argvdata/nat-network-dns-hosts.argv b/tests/networkxml2argvdata/nat-network-dns-hosts.argv
> index 03a0676..91eb682 100644
> --- a/tests/networkxml2argvdata/nat-network-dns-hosts.argv
> +++ b/tests/networkxml2argvdata/nat-network-dns-hosts.argv
> @@ -1,4 +1,10 @@
> - DNSMASQ@ --strict-order --bind-interfaces --domain=example.com \
> ---local=/example.com/ --domain-needed \
> ---conf-file= --except-interface lo --listen-address 192.168.122.1 \
> ---expand-hosts --addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts\
> +# dnsmasq conf file created by libvirt
> +strict-order
> +bind-interfaces
> +except-interface=lo
> +domain-needed
> +local=/example.com/
> +domain=example.com
> +expand-hosts
> +listen-address=192.168.122.1
> +addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts
> diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv
> index 210a60c..d92497b 100644
> --- a/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv
> +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv
> @@ -1,17 +1,18 @@
> - DNSMASQ@ \
> ---strict-order \
> ---bind-interfaces \
> ---local=// --domain-needed --conf-file= \
> ---except-interface lo \
> ---srv-host=name.tcp.,,,, \
> ---listen-address 192.168.122.1 \
> ---listen-address 192.168.123.1 \
> ---listen-address 2001:db8:ac10:fe01::1 \
> ---listen-address 2001:db8:ac10:fd01::1 \
> ---listen-address 10.24.10.1 \
> ---dhcp-range 192.168.122.2,192.168.122.254 \
> ---dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases \
> ---dhcp-lease-max=253 \
> ---dhcp-no-override \
> ---dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile \
> ---addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts\
> +# dnsmasq conf file created by libvirt
> +strict-order
> +bind-interfaces
> +except-interface=lo
> +domain-needed
> +local=//
> +srv-host=name.tcp.,,,,
> +listen-address=192.168.122.1
> +listen-address=192.168.123.1
> +listen-address=2001:db8:ac10:fe01::1
> +listen-address=2001:db8:ac10:fd01::1
> +listen-address=10.24.10.1
> +dhcp-range=192.168.122.2,192.168.122.254
> +dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases
> +dhcp-lease-max=253
> +dhcp-no-override
> +dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile
> +addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts
> diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record.argv b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv
> index 833d3cd..d8846c2 100644
> --- a/tests/networkxml2argvdata/nat-network-dns-srv-record.argv
> +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv
> @@ -1,17 +1,18 @@
> - DNSMASQ@ \
> ---strict-order \
> ---bind-interfaces \
> ---local=// --domain-needed --conf-file= \
> ---except-interface lo \
> ---srv-host=name.tcp.test-domain-name,.,1024,10,10 \
> ---listen-address 192.168.122.1 \
> ---listen-address 192.168.123.1 \
> ---listen-address 2001:db8:ac10:fe01::1 \
> ---listen-address 2001:db8:ac10:fd01::1 \
> ---listen-address 10.24.10.1 \
> ---dhcp-range 192.168.122.2,192.168.122.254 \
> ---dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases \
> ---dhcp-lease-max=253 \
> ---dhcp-no-override \
> ---dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile \
> ---addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts\
> +# dnsmasq conf file created by libvirt
> +strict-order
> +bind-interfaces
> +except-interface=lo
> +domain-needed
> +local=//
> +srv-host=name.tcp.test-domain-name,.,1024,10,10
> +listen-address=192.168.122.1
> +listen-address=192.168.123.1
> +listen-address=2001:db8:ac10:fe01::1
> +listen-address=2001:db8:ac10:fd01::1
> +listen-address=10.24.10.1
> +dhcp-range=192.168.122.2,192.168.122.254
> +dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases
> +dhcp-lease-max=253
> +dhcp-no-override
> +dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile
> +addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts
> diff --git a/tests/networkxml2argvdata/nat-network-dns-txt-record.argv b/tests/networkxml2argvdata/nat-network-dns-txt-record.argv
> index 3481507..bf00513 100644
> --- a/tests/networkxml2argvdata/nat-network-dns-txt-record.argv
> +++ b/tests/networkxml2argvdata/nat-network-dns-txt-record.argv
> @@ -1,11 +1,18 @@
> - DNSMASQ@ --strict-order --bind-interfaces \
> ---local=// --domain-needed --conf-file= \
> ---except-interface lo '--txt-record=example,example value' \
> ---listen-address 192.168.122.1 --listen-address 192.168.123.1 \
> ---listen-address 2001:db8:ac10:fe01::1 \
> ---listen-address 2001:db8:ac10:fd01::1 --listen-address 10.24.10.1 \
> ---dhcp-range 192.168.122.2,192.168.122.254 \
> ---dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases \
> ---dhcp-lease-max=253 --dhcp-no-override \
> ---dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile \
> ---addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts\
> +# dnsmasq conf file created by libvirt
> +strict-order
> +bind-interfaces
> +except-interface=lo
> +domain-needed
> +local=//
> +txt-record=example,example value
> +listen-address=192.168.122.1
> +listen-address=192.168.123.1
> +listen-address=2001:db8:ac10:fe01::1
> +listen-address=2001:db8:ac10:fd01::1
> +listen-address=10.24.10.1
> +dhcp-range=192.168.122.2,192.168.122.254
> +dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases
> +dhcp-lease-max=253
> +dhcp-no-override
> +dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile
> +addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts
> diff --git a/tests/networkxml2argvdata/nat-network.argv b/tests/networkxml2argvdata/nat-network.argv
> index 37fd2fc..d542bbc 100644
> --- a/tests/networkxml2argvdata/nat-network.argv
> +++ b/tests/networkxml2argvdata/nat-network.argv
> @@ -1,10 +1,17 @@
> - DNSMASQ@ --strict-order --bind-interfaces \
> ---local=// --domain-needed --conf-file= \
> ---except-interface lo --listen-address 192.168.122.1 \
> ---listen-address 192.168.123.1 --listen-address 2001:db8:ac10:fe01::1 \
> ---listen-address 2001:db8:ac10:fd01::1 --listen-address 10.24.10.1 \
> ---dhcp-range 192.168.122.2,192.168.122.254 \
> ---dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases \
> ---dhcp-lease-max=253 --dhcp-no-override \
> ---dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile \
> ---addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts\
> +# dnsmasq conf file created by libvirt
> +strict-order
> +bind-interfaces
> +except-interface=lo
> +domain-needed
> +local=//
> +listen-address=192.168.122.1
> +listen-address=192.168.123.1
> +listen-address=2001:db8:ac10:fe01::1
> +listen-address=2001:db8:ac10:fd01::1
> +listen-address=10.24.10.1
> +dhcp-range=192.168.122.2,192.168.122.254
> +dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases
> +dhcp-lease-max=253
> +dhcp-no-override
> +dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile
> +addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts
> diff --git a/tests/networkxml2argvdata/netboot-network.argv b/tests/networkxml2argvdata/netboot-network.argv
> index 5408eb7..4f5fedd 100644
> --- a/tests/networkxml2argvdata/netboot-network.argv
> +++ b/tests/networkxml2argvdata/netboot-network.argv
> @@ -1,10 +1,18 @@
> - DNSMASQ@ --strict-order --bind-interfaces --domain=example.com \
> ---local=/example.com/ --domain-needed --conf-file= \
> ---except-interface lo --listen-address 192.168.122.1 \
> ---dhcp-range 192.168.122.2,192.168.122.254 \
> ---dhcp-leasefile=/var/lib/libvirt/dnsmasq/netboot.leases \
> ---dhcp-lease-max=253 --dhcp-no-override --expand-hosts \
> ---dhcp-hostsfile=/var/lib/libvirt/dnsmasq/netboot.hostsfile \
> ---addn-hosts=/var/lib/libvirt/dnsmasq/netboot.addnhosts \
> ---enable-tftp \
> ---tftp-root /var/lib/tftproot --dhcp-boot pxeboot.img\
> +# dnsmasq conf file created by libvirt
> +strict-order
> +bind-interfaces
> +except-interface=lo
> +domain-needed
> +local=/example.com/
> +domain=example.com
> +expand-hosts
> +listen-address=192.168.122.1
> +dhcp-range=192.168.122.2,192.168.122.254
> +dhcp-leasefile=/var/lib/libvirt/dnsmasq/netboot.leases
> +dhcp-lease-max=253
> +dhcp-no-override
> +dhcp-hostsfile=/var/lib/libvirt/dnsmasq/netboot.hostsfile
> +addn-hosts=/var/lib/libvirt/dnsmasq/netboot.addnhosts
> +enable-tftp
> +tftp-root=/var/lib/tftproot
> +dhcp-boot=pxeboot.img
> diff --git a/tests/networkxml2argvdata/netboot-proxy-network.argv b/tests/networkxml2argvdata/netboot-proxy-network.argv
> index 21e01e3..8b9c03a 100644
> --- a/tests/networkxml2argvdata/netboot-proxy-network.argv
> +++ b/tests/networkxml2argvdata/netboot-proxy-network.argv
> @@ -1,9 +1,16 @@
> - DNSMASQ@ --strict-order --bind-interfaces --domain=example.com \
> ---local=/example.com/ --domain-needed --conf-file= \
> ---except-interface lo --listen-address 192.168.122.1 \
> ---dhcp-range 192.168.122.2,192.168.122.254 \
> ---dhcp-leasefile=/var/lib/libvirt/dnsmasq/netboot.leases \
> ---dhcp-lease-max=253 --dhcp-no-override --expand-hosts \
> ---dhcp-hostsfile=/var/lib/libvirt/dnsmasq/netboot.hostsfile \
> ---addn-hosts=/var/lib/libvirt/dnsmasq/netboot.addnhosts \
> ---dhcp-boot pxeboot.img,,10.20.30.40\
> +# dnsmasq conf file created by libvirt
> +strict-order
> +bind-interfaces
> +except-interface=lo
> +domain-needed
> +local=/example.com/
> +domain=example.com
> +expand-hosts
> +listen-address=192.168.122.1
> +dhcp-range=192.168.122.2,192.168.122.254
> +dhcp-leasefile=/var/lib/libvirt/dnsmasq/netboot.leases
> +dhcp-lease-max=253
> +dhcp-no-override
> +dhcp-hostsfile=/var/lib/libvirt/dnsmasq/netboot.hostsfile
> +addn-hosts=/var/lib/libvirt/dnsmasq/netboot.addnhosts
> +dhcp-boot=pxeboot.img,,10.20.30.40
> diff --git a/tests/networkxml2argvdata/routed-network.argv b/tests/networkxml2argvdata/routed-network.argv
> index 9fedb2b..ad9e121 100644
> --- a/tests/networkxml2argvdata/routed-network.argv
> +++ b/tests/networkxml2argvdata/routed-network.argv
> @@ -1,4 +1,8 @@
> - DNSMASQ@ --strict-order --bind-interfaces \
> ---local=// --domain-needed --conf-file= \
> ---except-interface lo --listen-address 192.168.122.1 \
> ---addn-hosts=/var/lib/libvirt/dnsmasq/local.addnhosts\
> +# dnsmasq conf file created by libvirt
> +strict-order
> +bind-interfaces
> +except-interface=lo
> +domain-needed
> +local=//
> +listen-address=192.168.122.1
> +addn-hosts=/var/lib/libvirt/dnsmasq/local.addnhosts
> diff --git a/tests/networkxml2argvtest.c b/tests/networkxml2argvtest.c
> index 87519e4..78ac8cf 100644
> --- a/tests/networkxml2argvtest.c
> +++ b/tests/networkxml2argvtest.c
> @@ -15,37 +15,6 @@
>  #include "memory.h"
>  #include "network/bridge_driver.h"
>  
> -/* Replace all occurrences of @token in @buf by @replacement and adjust size of
> - * @buf accordingly. Returns 0 on success and -1 on out-of-memory errors. */
> -static int replaceTokens(char **buf, const char *token, const char *replacement) {
> -    size_t token_start, token_end;
> -    size_t buf_len, rest_len;
> -    const size_t token_len = strlen(token);
> -    const size_t replacement_len = strlen(replacement);
> -    const int diff = replacement_len - token_len;
> -
> -    buf_len = rest_len = strlen(*buf) + 1;
> -    token_end = 0;
> -    for (;;) {
> -        char *match = strstr(*buf + token_end, token);
> -        if (match == NULL)
> -            break;
> -        token_start = match - *buf;
> -        rest_len -= token_start + token_len - token_end;
> -        token_end = token_start + token_len;
> -        buf_len += diff;
> -        if (diff > 0)
> -            if (VIR_REALLOC_N(*buf, buf_len) < 0)
> -                return -1;
> -        if (diff != 0)
> -            memmove(*buf + token_end + diff, *buf + token_end, rest_len);
> -        memcpy(*buf + token_start, replacement, replacement_len);
> -        token_end += diff;
> -    }
> -    /* if diff < 0, we could shrink the buffer here... */
> -    return 0;
> -}
> -
>  static int testCompareXMLToArgvFiles(const char *inxml, const char *outargv) {
>      char *inXmlData = NULL;
>      char *outArgvData = NULL;
> @@ -55,6 +24,7 @@ static int testCompareXMLToArgvFiles(const char *inxml, const char *outargv) {
>      virNetworkObjPtr obj = NULL;
>      virCommandPtr cmd = NULL;
>      char *pidfile = NULL;
> +    char *configdir = NULL;
>      dnsmasqContext *dctx = NULL;
>  
>      if (virtTestLoadFile(inxml, &inXmlData) < 0)
> @@ -62,10 +32,6 @@ static int testCompareXMLToArgvFiles(const char *inxml, const char *outargv) {
>  
>      if (virtTestLoadFile(outargv, &outArgvData) < 0)
>          goto fail;
> -
> -    if (replaceTokens(&outArgvData, "@DNSMASQ@", DNSMASQ))
> -        goto fail;
> -
>      if (!(dev = virNetworkDefParseString(inXmlData)))
>          goto fail;
>  
> @@ -78,12 +44,9 @@ static int testCompareXMLToArgvFiles(const char *inxml, const char *outargv) {
>      if (dctx == NULL)
>          goto fail;
>  
> -    if (networkBuildDhcpDaemonCommandLine(obj, &cmd, pidfile, dctx) < 0)
> -        goto fail;
> -
> -    if (!(actual = virCommandToString(cmd)))
> +    if (networkBuildDhcpDaemonCommandLine(obj, &cmd, pidfile, 
> +                        dctx, configdir, 1, &actual) < 0)
>          goto fail;
> -
>      if (STRNEQ(outArgvData, actual)) {
>          virtTestDifference(stderr, outArgvData, actual);
>          goto fail;
> @@ -147,7 +110,6 @@ mymain(void)
>      if (virtTestRun("Network XML-2-Argv " name, \
>                      1, testCompareXMLToArgvHelper, (name)) < 0) \
>          ret = -1
> -
>      DO_TEST("isolated-network");
>      DO_TEST("routed-network");
>      DO_TEST("nat-network");


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