libusb

[saharnic]

hello to all
I want to send a file to a usb mass storage device . can use libusb for this purpose ?how?
if no what can i do?

[Irithori]

Usb storage devices usually have a filesystem.
Mounting it will provide file access.

[saharnic]

my project is a driver and/or program that can send file to mass storage device
can libusb alone help me ?

[Irithori]

libusb operates on a lower layer than filesystems.
You can send data to a usb device with libusb, but this is then not a file on that mass storage.

[saharnic]

and how can i send file?

[Irithori]

Via file operations.
The mass storage device needs to be already mounted at that point.

[saharnic]

can you explain more detail?

[saharnic]

i want write a program that send a file via usb driver
is this posible?

[Irithori]

As an example, please adjust to your usecase:
Letīs say, the usb mass storage device (/dev/sdb) is already partioned (/dev/sdb1) and has a filesystem (ext4)

You would then need a directory to server as mountpoint: /mnt/usb
Then mount it.
mount /dev/sdb1 /mnt/usb

Your program can then write to /mnt/usb via the usual systemcalls: open(), write(), etc
if the filesystem permissions allow it.

[saharnic]

i am used libusb for send data to usb device in linux how can i retrieval or show data in usb devise?
my usb device is embedded linux board.