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static void u_rehash(const userinput * const u) {      /* other variables */   char *templine = mycalloc(maxtextlength);   int h,i,filedescriptor,needtojump;   channel_t *ch, *rch;   xdcc *xd;      updatecontext();      if (u->method==method_out_all) u_respond(u,"Caught SIGUSR2, Rehashing...");      gdata.r_transferminspeed = gdata.transferminspeed;   gdata.r_transfermaxspeed = gdata.transfermaxspeed;      if (gdata.logfd != FD_UNUSED)     {       close(gdata.logfd);       gdata.logfd = FD_UNUSED;     }      reinit_config_vars();      set_loginname();      /* go */     for (h=1; h<MAXCONFIG && gdata.configfile[h]; h++) {      u_respond(u,"Reloading %s ...",gdata.configfile[h]);            filedescriptor=open(gdata.configfile[h], O_RDONLY | ADDED_OPEN_FLAGS);         while (getfline(templine,maxtextlength,filedescriptor,1))        {          if ((templine[0] != '#') && templine[0])            {              getconfig_set(templine,1);            }        }            close(filedescriptor);     }      /* see what needs to be redone */      u_respond(u,"Reconfiguring...");      needtojump=0;   if (gdata.local_vhost != gdata.r_local_vhost)     {       needtojump=1;     }      /* part deleted channels, add common channels */   ch = irlist_get_head(&gdata.channels);   while(ch)     {       rch = irlist_get_head(&gdata.r_channels);       while(rch)         {           if (!strcmp(ch->name,rch->name))             {               break;             }           rch = irlist_get_next(rch);         }              if (!rch)         {           if (!needtojump && (ch->flags & CHAN_ONCHAN))             {               writeserver(WRITESERVER_NORMAL, "PART %s", ch->name);             }           if (gdata.debug > 2)             {               ioutput(CALLTYPE_NORMAL,OUT_S,COLOR_NO_COLOR,                       "1 = %s parted\n",ch->name);             }           clearmemberlist(ch);           mydelete(ch->name);           mydelete(ch->key);           ch = irlist_delete(&gdata.channels, ch);         }       else         {           rch->flags |= ch->flags & CHAN_ONCHAN;           rch->members = ch->members;           mydelete(ch->name);           mydelete(ch->key);           *ch = *rch;           if (gdata.debug > 2)             {               ioutput(CALLTYPE_NORMAL,OUT_S,COLOR_NO_COLOR,                       "2  = %s common\n", ch->name);             }           irlist_delete(&gdata.r_channels, rch);           ch = irlist_get_next(ch);         }      }      /* join/add new channels */      rch = irlist_get_head(&gdata.r_channels);   while(rch)     {       ch = irlist_get_head(&gdata.channels);       while(ch)         {           if (!strcmp(ch->name,rch->name))             {               break;             }           ch = irlist_get_next(ch);         }              if (!ch)         {           ch = irlist_add(&gdata.channels, sizeof(channel_t));           *ch = *rch;           ch->flags &= ~CHAN_ONCHAN;           if (!needtojump)             {               joinchannel(ch);             }           if (gdata.debug > 2)             {               ioutput(CALLTYPE_NORMAL,OUT_S,COLOR_NO_COLOR,                       "3 = %s new\n",ch->name);             }           rch = irlist_delete(&gdata.r_channels, rch);         }       else         {           outerror(OUTERROR_TYPE_CRASH,"channel found!");         }     }      gdata.local_vhost = gdata.r_local_vhost;   gdata.r_local_vhost = 0;      if (needtojump) {      u_respond(u,"vhost changed, reconnecting");      switchserver(-1);      /* switchserver takes care of joining channels */      }      if (((!gdata.pidfile) && (gdata.r_pidfile)) ||       ((gdata.pidfile) && (!gdata.r_pidfile)) ||       ((gdata.pidfile) && (gdata.r_pidfile) && strcmp(gdata.pidfile,gdata.r_pidfile)))     {       u_respond(u,"pidfile changed, switching");       if (gdata.pidfile)         {           unlink(gdata.pidfile);         }       if (gdata.r_pidfile)         {           writepidfile(gdata.r_pidfile);         }     }   mydelete(gdata.pidfile);   gdata.pidfile = gdata.r_pidfile;   gdata.r_pidfile = NULL;      if (!gdata.r_config_nick)     {       u_respond(u,"user_nick missing! keeping old nick!");     }   else     {       if (strcmp(gdata.config_nick,gdata.r_config_nick))         {           u_respond(u,"user_nick changed, renaming nick to %s", gdata.r_config_nick);           writeserver(WRITESERVER_NOW, "NICK %s", gdata.r_config_nick);         }       mydelete(gdata.config_nick);       gdata.config_nick = gdata.r_config_nick;       gdata.r_config_nick = NULL;     }      gdata.maxb = gdata.overallmaxspeed;   if (gdata.overallmaxspeeddayspeed != gdata.overallmaxspeed) {      struct tm *localt;      localt = localtime(&gdata.curtime);      if (localt->tm_hour >= gdata.overallmaxspeeddaytimestart          && localt->tm_hour < gdata.overallmaxspeeddaytimeend          && ( gdata.overallmaxspeeddaydays & (1 << localt->tm_wday)) )         gdata.maxb = gdata.overallmaxspeeddayspeed;      }      if ( gdata.r_transferminspeed != gdata.transferminspeed)     {       xd = irlist_get_head(&gdata.xdccs);       while(xd)         {           if (xd->minspeed == gdata.r_transferminspeed)             {                            xd->minspeed = gdata.transferminspeed;             }           xd = irlist_get_next(xd);         }     }      if ( gdata.r_transfermaxspeed != gdata.transfermaxspeed)     {       xd = irlist_get_head(&gdata.xdccs);       while(xd)         {           if (xd->maxspeed == gdata.r_transfermaxspeed)             {               xd->maxspeed = gdata.transfermaxspeed;             }           xd = irlist_get_next(xd);         }     }      /* check for completeness */   u_respond(u,"Checking for completeness of config file ...");      if ( !irlist_size(&gdata.servers)        || gdata.config_nick == NULL || gdata.user_realname == NULL        || gdata.user_modes == NULL        || gdata.slotsmax == 0)      u_respond(u,"**WARNING** missing vital information, fix and re-rehash ASAP");      if ( irlist_size(&gdata.uploadhost) && ( gdata.uploaddir == NULL || strlen(gdata.uploaddir) < 2 ) )      u_respond(u,"**WARNING** incomplete upload information, fix and re-rehash ASAP");         if ( !irlist_size(&gdata.downloadhost) )     {       u_respond(u,"**WARNING** no download hosts defined");     }      if ( !gdata.statefile )     {       u_respond(u,"**WARNING** no state file defined");     }      u_respond(u,"Done.");      reverify_restrictsend();      for (i=0; i<100; i++)     {       if (!gdata.exiting &&           irlist_size(&gdata.mainqueue) &&           (irlist_size(&gdata.trans) < min2(MAXTRANS,gdata.slotsmax)))         {           sendaqueue(0);         }     }      mydelete(templine);   }