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#include "monitor.h"
#include "dynamicdevice.h"
#include <unistd.h>
// --- cUdevMonitor ----------------------------------------------------------
cMutex cUdevMonitor::mutexMonitors;
int cUdevMonitor::numMonitors = 0;
cUdevMonitor *cUdevMonitor::monitors[MAXUDEVMONITORS] = { NULL };
cUdevMonitor *cUdevMonitor::Get(const char *Subsystem)
{
cMutexLock lock(&mutexMonitors);
int i = 0;
while (i < numMonitors) {
if (monitors[i]) {
if ((Subsystem == NULL) && (*monitors[i]->subsystem == NULL))
return monitors[i];
if ((Subsystem != NULL)
&& (*monitors[i]->subsystem != NULL)
&& (strcmp(*monitors[i]->subsystem, Subsystem) == 0))
return monitors[i];
}
i++;
}
if (i < MAXUDEVMONITORS) {
numMonitors++;
cUdevMonitor *m = new cUdevMonitor(Subsystem);
m->index = i;
monitors[i] = m;
return m;
}
return NULL;
}
bool cUdevMonitor::AddFilter(const char *Subsystem, cUdevFilter *Filter)
{
if (Filter == NULL)
return false;
cUdevMonitor *m = Get(Subsystem);
if (m == NULL) {
delete Filter;
return false;
}
if (!m->AddFilter(Filter)) {
delete Filter;
return false;
}
return true;
}
void cUdevMonitor::ShutdownAllMonitors(void)
{
cMutexLock lock(&mutexMonitors);
for (int i = 0; i < numMonitors; i++) {
if (monitors[i]) {
delete monitors[i];
monitors[i] = NULL;
}
}
}
cUdevMonitor::cUdevMonitor(const char *Subsystem)
:monitor(NULL)
,index(-1)
,subsystem(Subsystem)
{
struct udev *udev = cUdev::Init();
if (udev) {
monitor = udev_monitor_new_from_netlink(udev, "udev");
if (monitor && Subsystem)
udev_monitor_filter_add_match_subsystem_devtype(monitor, Subsystem, NULL);
}
SetDescription("dynamite udev monitor for subsystem %s", Subsystem);
}
cUdevMonitor::~cUdevMonitor(void)
{
if ((index >= 0) && (index < MAXUDEVMONITORS)) {
cMutexLock lock(&mutexMonitors);
if (monitors[index] == this)
monitors[index] = NULL;
}
Cancel(3);
filters.Clear();
if (monitor)
udev_monitor_unref(monitor);
monitor = NULL;
}
#define MONITOR_POLL_INTERVAL_MS 500
void cUdevMonitor::Action(void)
{
if (monitor == NULL)
return;
udev_monitor_enable_receiving(monitor);
int fd = udev_monitor_get_fd(monitor);
if (fd == 0)
return;
fd_set fds;
struct timeval tv;
while (Running()) {
FD_ZERO(&fds);
FD_SET(fd, &fds);
tv.tv_sec = 0;
tv.tv_usec = MONITOR_POLL_INTERVAL_MS * 1000;
int ret = select(fd+1, &fds, NULL, NULL, &tv);
if (!Running())
break;
if ((ret > 0) && FD_ISSET(fd, &fds)) {
udev_device *dev = udev_monitor_receive_device(monitor);
if (dev) {
cMutexLock lock(&filtersMutex);
cUdevDevice d(dev);
for (cUdevFilter *f = filters.First(); f; f = filters.Next(f))
f->Process(d);
}
}
}
close(fd);
}
bool cUdevMonitor::AddFilter(cUdevFilter *Filter)
{
if (monitor == NULL)
return false;
if (Filter == NULL)
return false;
if (Filter->monitor == this)
return true;
if (Filter->monitor != NULL)
return false;
cMutexLock lock(&filtersMutex);
Filter->monitor = this;
filters.Add(Filter);
if (!Running())
Start();
return true;
}
bool cUdevMonitor::DelFilter(cUdevFilter *Filter)
{
if (monitor == NULL)
return false;
if (Filter == NULL)
return false;
if (Filter->monitor != this)
return false;
cMutexLock lock(&filtersMutex);
filters.Del(Filter);
Filter->monitor = NULL;
if (filters.Count() == 0)
Cancel(3);
return true;
}
// --- cUdevFilter -----------------------------------------------------------
cUdevFilter::cUdevFilter(void)
:monitor(NULL)
{
}
cUdevFilter::~cUdevFilter(void)
{
}
// --- cUdevLogFilter --------------------------------------------------------
static void InternLogProcess(int Level, cUdevDevice &Device)
{
char *indent = new char[Level + 2];
indent[0] = '+';
int i = 0;
while (i < Level) {
indent[i + 1] = '-';
i++;
}
indent[i + 1] = '\0';
const char *action = Device.GetAction();
const char *subsystem = Device.GetPropertyValue("SUBSYSTEM");
const char *syspath = Device.GetSyspath();
const char *devpath = Device.GetPropertyValue("DEVPATH");
const char *devname = Device.GetPropertyValue("DEVNAME");
isyslog("dynamite: udev: %s action=%s, subsystem=%s, syspath=%s, devpath=%s, devname=%s", indent, action, subsystem, syspath, devpath, devname);
cUdevListEntry *devlink = Device.GetDevlinksList();
while (devlink) {
isyslog("dynamite: udev: %s devlink: %s", indent, devlink->GetName());
cUdevListEntry *tmp = devlink->GetNext();
delete devlink;
devlink = tmp;
}
cUdevDevice *parent = Device.GetParent();
if (parent != NULL) {
InternLogProcess(Level + 1, *parent);
delete parent;
}
}
void cUdevLogFilter::Process(cUdevDevice &Device)
{
InternLogProcess(0, Device);
}
// --- cUdevDvbFilter --------------------------------------------------------
void cUdevDvbFilter::Process(cUdevDevice &Device)
{
const char *action = Device.GetAction();
if (action && (strcmp(action, "add") == 0)) {
const char *dvb_device_type = Device.GetPropertyValue("DVB_DEVICE_TYPE");
if (!dvb_device_type || (strcmp(dvb_device_type, "frontend") != 0))
return;
const char *devname = Device.GetPropertyValue("DEVNAME");
if (!devname || cDynamicDevice::IsAttached(devname))
return;
cDynamicDeviceProbe::QueueDynamicDeviceCommand(ddpcAttach, devname);
}
}
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