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Fixed getting the subsystem ids of DVB devices in case they have been rearranged via udev rules

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This commit is contained in:
Klaus Schmidinger 2012-02-20 12:54:01 +01:00
parent 343ca17b17
commit 5b2bdf2049
2 changed files with 39 additions and 15 deletions
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2
HISTORY
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@ -6895,3 +6895,5 @@ Video Disk Recorder Revision History
when pausing live video.
- Increased the average character estimate for calculating tab positions in skins,
to better suit wide fonts (reported by Rudi Hofer).
- Fixed getting the subsystem ids of DVB devices in case they have been rearranged
via udev rules.

34
dvbdevice.c
View File

@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: dvbdevice.c 2.62 2012/02/17 12:20:34 kls Exp $
* $Id: dvbdevice.c 2.63 2012/02/20 12:45:49 kls Exp $
*/
#include "dvbdevice.h"
@ -1591,21 +1591,43 @@ cDvbDeviceProbe::~cDvbDeviceProbe()
uint32_t cDvbDeviceProbe::GetSubsystemId(int Adapter, int Frontend)
{
cString FileName;
cReadLine ReadLine;
FILE *f = NULL;
uint32_t SubsystemId = 0;
FileName = cString::sprintf("/sys/class/dvb/dvb%d.frontend%d/device/subsystem_vendor", Adapter, Frontend);
cString FileName = cString::sprintf("/dev/dvb/adapter%d/frontend%d", Adapter, Frontend);
struct stat st;
if (stat(FileName, &st) == 0) {
cReadDir d("/sys/class/dvb");
if (d.Ok()) {
struct dirent *e;
while ((e = d.Next()) != NULL) {
if (strstr(e->d_name, "frontend")) {
FileName = cString::sprintf("/sys/class/dvb/%s/dev", e->d_name);
if (FILE *f = fopen(FileName, "r")) {
cReadLine ReadLine;
char *s = ReadLine.Read(f);
fclose(f);
unsigned Major;
unsigned Minor;
if (s && 2 == sscanf(s, "%u:%u", &Major, &Minor)) {
if (((Major << 8) | Minor) == st.st_rdev) {
FileName = cString::sprintf("/sys/class/dvb/%s/device/subsystem_vendor", e->d_name);
if ((f = fopen(FileName, "r")) != NULL) {
if (char *s = ReadLine.Read(f))
SubsystemId = strtoul(s, NULL, 0) << 16;
fclose(f);
}
FileName = cString::sprintf("/sys/class/dvb/dvb%d.frontend%d/device/subsystem_device", Adapter, Frontend);
FileName = cString::sprintf("/sys/class/dvb/%s/device/subsystem_device", e->d_name);
if ((f = fopen(FileName, "r")) != NULL) {
if (char *s = ReadLine.Read(f))
SubsystemId |= strtoul(s, NULL, 0);
fclose(f);
}
break;
}
}
}
}
}
}
}
return SubsystemId;
}