Volume existence with no popup requester?

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Sun, 2016-10-16 22:16
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alfkil
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Volume existence with no popup requester?
Is it possible to know, if a volume exists without having to live with the popup requester from DOS asking for the volume to be inserted? As far as I can see, ExamineObjectTags do not come with a feature to suppress DOS requesters.
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Sun, 2016-10-16 22:30
trixie
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Re: Volume existence with no popup requester?
@alfkil 
  1. APTR procWindow = NULL;
  2.  
  3.  
  4. // Disable DOS requesters.
  5. procWindow = IDOS->SetProcWindow((APTR) -1);
  6.  
  7. // Do your ExamineObjectTags() here.
  8.  
  9. // Re-enable DOS requesters.
  10. IDOS->SetProcWindow(procWindow);
AmigaOne X5000-020 / 2GB RAM / Sapphire Pulse Radeon RX 560 / AmigaOS 4.1 Final Edition Update 2
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Tue, 2016-10-18 15:02
salass00
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Re: Volume existence with no popup requester?
If you need a file system and not a handler then trying for a SHARED_LOCK with Lock() might be more appropriate than using ExamineObjectTags() if you don't need the ExamineData structure. Also if the name really must be a volume and not an assign or device or something else you can search the doslist manually using LockDosList()/FindDosEntry()/UnlockDosList(). This is a bit low level but you won't have to disable error requesters then.
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Tue, 2016-12-20 23:45
(Reply to #3)
alfkil
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Re: Volume existence with no popup requester?
Thanks!
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Sun, 2020-05-31 01:56
Elwood
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Re: Volume existence with no popup requester?

And how one could do it *without* C code?
As an example, when using a Python script and os.system()
Maybe we would need some CLI command to enable/disable this option.

-- Elwood
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Sun, 2020-05-31 13:25
(Reply to #5)
jabirulo
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Re: Volume existence with no popup requester?

You can use something like INFO command (or the function/code in the language used):
#info kdh1:
Discos montados:
Unidad Tamaño Usados Libres Lleno Errs. Estado Nombre Tipo DOS
KDH1: 26G 9.838M 16G 36% 0 Lect./Escr. Utilidades NGF\00

Volúmenes disponibles:
Utilidades: [Montado]
#info kdh11:
kdh11: objeto no encontrado
#

AOS4.1/SAM460ex/PPC460EX-1155MHZ/2048MB/RadeonHD6570/SSD120GB/DVDRW :-P
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Mon, 2020-06-01 18:05
(Reply to #6)
xenic
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Re: Volume existence with no popup requester?

@elwood
You can make your own CLI command (script). Here is an example:

; AmigaDOS script
.key myvolume
.bra {
.ket }
IF {myvolume} NOT GT " "
ECHO "Error: No argument entered."
SKIP error
ENDIF
assign {myvolume} exists noreq >NIL:
if WARN
echo "Does not exist."
else
echo "Does exist."
endif
QUIT

LAB error
QUIT 5

X1000 - OS 4.1FE
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