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#include "udev.h"
#include <linux/stddef.h>
// --- cUdevListEntry --------------------------------------------------------
cUdevListEntry::cUdevListEntry(struct udev_list_entry *ListEntry)
:listEntry(ListEntry)
{
}
cUdevListEntry::~cUdevListEntry(void)
{
}
cUdevListEntry *cUdevListEntry::GetNext(void) const
{
if (listEntry == NULL)
return NULL;
struct udev_list_entry *next = udev_list_entry_get_next(listEntry);
if (next == NULL)
return NULL;
return new cUdevListEntry(next);
}
const char *cUdevListEntry::GetName(void) const
{
if (listEntry == NULL)
return NULL;
return udev_list_entry_get_name(listEntry);
}
const char *cUdevListEntry::GetValue(void) const
{
if (listEntry == NULL)
return NULL;
return udev_list_entry_get_value(listEntry);
}
// --- cUdevDevice -----------------------------------------------------------
cUdevDevice::cUdevDevice(udev_device *Device, bool DoUnref)
:device(Device)
,doUnref(DoUnref)
{
}
cUdevDevice::~cUdevDevice(void)
{
if (doUnref && device)
udev_device_unref(device);
}
int cUdevDevice::Compare(const cListObject &ListObject) const
{
const char *n1 = GetDevnode();
const char *n2 = ((cUdevDevice*)&ListObject)->GetDevnode();
if ((n1 != NULL) && (n2 != NULL))
return strcmp(n1, n2);
return 0;
}
const char *cUdevDevice::GetAction(void) const
{
if (device == NULL)
return NULL;
return udev_device_get_action(device);
}
cUdevListEntry *cUdevDevice::GetDevlinksList(void) const
{
if (device == NULL)
return NULL;
struct udev_list_entry *listEntry = udev_device_get_devlinks_list_entry(device);
if (listEntry == NULL)
return NULL;
return new cUdevListEntry(listEntry);
}
const char *cUdevDevice::GetDevnode(void) const
{
if (device == NULL)
return false;
return udev_device_get_devnode(device);
}
const char *cUdevDevice::GetDevpath(void) const
{
if (device == NULL)
return false;
return udev_device_get_devpath(device);
}
cUdevDevice *cUdevDevice::GetParent(void) const
{
if (device == NULL)
return NULL;
struct udev_device *parent = udev_device_get_parent(device);
if (parent == NULL)
return NULL;
return new cUdevDevice(parent, false);
}
const char *cUdevDevice::GetPropertyValue(const char *Key) const
{
if (device == NULL)
return false;
return udev_device_get_property_value(device, Key);
}
const char *cUdevDevice::GetSubsystem(void) const
{
if (device == NULL)
return false;
return udev_device_get_subsystem(device);
}
const char *cUdevDevice::GetSysname(void) const
{
if (device == NULL)
return false;
return udev_device_get_sysname(device);
}
const char *cUdevDevice::GetSyspath(void) const
{
if (device == NULL)
return false;
return udev_device_get_syspath(device);
}
// --- cUdev -----------------------------------------------------------------
struct udev *cUdev::udev = NULL;
struct udev *cUdev::Init(void)
{
if (udev == NULL)
udev = udev_new();
return udev;
}
void cUdev::Free(void)
{
if (udev)
udev_unref(udev);
udev = NULL;
}
cUdevDevice *cUdev::GetDeviceFromDevName(const char *DevName)
{
if (DevName == NULL)
return NULL;
struct stat statbuf;
if (stat(DevName, &statbuf) < 0)
return NULL;
char type;
if (S_ISBLK(statbuf.st_mode))
type = 'b';
else if (S_ISCHR(statbuf.st_mode))
type = 'c';
else
return NULL;
udev_device *dev = udev_device_new_from_devnum(udev, type, statbuf.st_rdev);
if (dev == NULL)
return NULL;
return new cUdevDevice(dev);
}
cUdevDevice *cUdev::GetDeviceFromSysPath(const char *SysPath)
{
if (SysPath == NULL)
return NULL;
udev_device *dev = udev_device_new_from_syspath(udev, SysPath);
if (dev == NULL)
return NULL;
return new cUdevDevice(dev);
}
cList<cUdevDevice> *cUdev::EnumDevices(const char *Subsystem, const char *Property, const char *Value)
{
cList<cUdevDevice> *devices = new cList<cUdevDevice>;
struct udev_enumerate *e = udev_enumerate_new(udev);
struct udev_list_entry *l;
cUdevListEntry *listEntry;
const char *path;
cUdevDevice *dev;
if (e != NULL) {
int rc = 0;
if (Subsystem && ((rc = udev_enumerate_add_match_subsystem(e, Subsystem)) < 0)) {
esyslog("dynamite: can't add subsystem %s to enum-filter: %d", Subsystem, rc);
goto unref;
}
if (Property && Value && ((rc = udev_enumerate_add_match_property(e, Property, Value)) < 0)) {
esyslog("dynamite: can't add property %s value %s to enum-filter: %d", Property, Value, rc);
goto unref;
}
if ((rc = udev_enumerate_scan_devices(e)) < 0) {
esyslog("dynamite: can't scan for devices: %d", rc);
goto unref;
}
l = udev_enumerate_get_list_entry(e);
if (l == NULL) {
isyslog("dynamite: no devices found for %s/%s=%s", Subsystem, Property, Value);
goto unref;
}
listEntry = new cUdevListEntry(l);
while (listEntry) {
path = listEntry->GetName();
if (path != NULL) {
dev = GetDeviceFromSysPath(path);
if (dev != NULL)
devices->Add(dev);
}
cUdevListEntry *tmp = listEntry->GetNext();
delete listEntry;
listEntry = tmp;
}
unref:
udev_enumerate_unref(e);
}
return devices;
}
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