Get devices list

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Tue, 2015-03-03 03:17

mritter0

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Get devices list

I can find all the devices on the computer just fine: LockDosList(LDF_DEVICES | LDF_READ); I then check doslist->dol_Port to filter out non-DH0:, non-DF0:, etc. But it still allows ENV:, APPDIR:, and a few others through. Is there an easy way to only get DFx:, DHx:, RAM:, RAD:, CDx: USB: ? Physical devices.

Tue, 2015-03-03 10:53

salass00

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That dol_Port is initialized

That dol_Port is initialized doesn't necessarily mean that it's a filesystem. You should use IDOS->IsFileSystemPort() to check this. Also to discount ENV: and APPDIR: make sure that there is a valid volume. You can do that using IDOS->GetDiskInfo(). Just make sure that the returned id_VolumeNode is non-zero and a valid BPTR (top two bits should be cleared).

Tue, 2015-03-03 14:04

(Reply to #2) #3

salass00

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Also to discount ENV: and

Also to discount ENV: and APPDIR: make sure that there is a valid volume. You can do that using IDOS->GetDiskInfo(). Just make sure that the returned id_VolumeNode is non-zero and a valid BPTR (top two bits should be cleared).

Colin Wenzel has informed me that the above that the above won't work because ENV: and APPDIR: do have volume nodes though they are not public (i.e. added to the doslist). It looks like the best way might be to look for a DLT_VOLUME entry with the same dol_Port value as the DLT_DEVICE entry. If you can't find one then it's either a filesystem like ENV:/APPDIR: or there simply is no disk inserted there.

Wed, 2015-03-04 05:12

mritter0

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I updated the code with what

I updated the code with what you put here and some other stuff found on Hyperion's forum. Still not perfect but just do a name check for ENV: and APPDIR: and skip them. Thanks

Wed, 2015-03-04 09:54

(Reply to #4) #5

salass00

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Colin Wenzel has suggested to

Colin Wenzel has suggested to me that you should just use AllocDosObject(DOS_VOLUMELIST, ...) (available in dos.library V53.52+) to get a list of current volumes rather than manually running the doslist (which is discouraged).

Wed, 2015-03-04 19:15

mritter0

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That will work, too. But I

That will work, too. But I am thinking that only lists the devices with a disk inserted. i want to find them all, then check if has disk inserted. I will keep trying different ways.

Wed, 2015-03-04 23:32

(Reply to #6) #7

salass00

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Still not perfect but just do

Still not perfect but just do a name check for ENV: and APPDIR: and skip them.

Rather than doing checks against some hard coded names you can use IDOS->GetDiskFileSystemData(). It will fail if the device is not for a standard block storage file system.

Thu, 2015-03-05 01:55

mritter0

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Using GetDeviceProc() and

Using GetDeviceProc() and IsFileSystemPort() lets ENV: and APPDIR: through with the real devices. Good. Then check with GetDiskFileSystemData() ignores ENV: and APPDIR: (good) but also ignores RAM:. So I do a name check for RAM: to not check GetDiskFileSystemData() and all is good. Not 100% full proof but darn close. Thanks!

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