120 lines
3.6 KiB
C
120 lines
3.6 KiB
C
/**
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* @file net_up.c
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* @author Ambroz Bizjak <ambrop7@gmail.com>
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*
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* @section LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @section DESCRIPTION
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*
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* Network interface up and down module.
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*
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* Synopsis: net.up(string ifname)
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* Description: Sets a network interface up on initialization and down on
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* deinitialization.
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*/
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#include <stdlib.h>
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#include <ncd/NCDModule.h>
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#include <ncd/extra/NCDIfConfig.h>
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#include <generated/blog_channel_ncd_net_up.h>
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#define ModuleLog(i, ...) NCDModuleInst_Backend_Log((i), BLOG_CURRENT_CHANNEL, __VA_ARGS__)
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struct instance {
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NCDModuleInst *i;
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NCDValNullTermString ifname_nts;
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};
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static void func_new (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
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{
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struct instance *o = vo;
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o->i = i;
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// read arguments
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NCDValRef ifname_arg;
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if (!NCDVal_ListRead(params->args, 1, &ifname_arg)) {
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ModuleLog(o->i, BLOG_ERROR, "wrong arity");
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goto fail0;
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}
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if (!NCDVal_IsStringNoNulls(ifname_arg)) {
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ModuleLog(o->i, BLOG_ERROR, "wrong type");
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goto fail0;
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}
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// null terminate ifname
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if (!NCDVal_StringNullTerminate(ifname_arg, &o->ifname_nts)) {
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ModuleLog(i, BLOG_ERROR, "NCDVal_StringNullTerminate failed");
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goto fail0;
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}
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// set interface up
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if (!NCDIfConfig_set_up(o->ifname_nts.data)) {
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ModuleLog(o->i, BLOG_ERROR, "failed to set interface up");
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goto fail1;
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}
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// signal up
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NCDModuleInst_Backend_Up(o->i);
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return;
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fail1:
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NCDValNullTermString_Free(&o->ifname_nts);
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fail0:
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NCDModuleInst_Backend_DeadError(i);
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}
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static void func_die (void *vo)
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{
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struct instance *o = vo;
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// set interface down
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if (!NCDIfConfig_set_down(o->ifname_nts.data)) {
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ModuleLog(o->i, BLOG_ERROR, "failed to set interface down");
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}
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// free ifname nts
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NCDValNullTermString_Free(&o->ifname_nts);
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NCDModuleInst_Backend_Dead(o->i);
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}
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static struct NCDModule modules[] = {
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{
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.type = "net.up",
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.func_new2 = func_new,
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.func_die = func_die,
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.alloc_size = sizeof(struct instance)
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}, {
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.type = NULL
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}
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};
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const struct NCDModuleGroup ncdmodule_net_up = {
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.modules = modules
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};
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