From: DervishD <lkml@dervishd.net>
To: Linux-kernel <linux-kernel@vger.kernel.org>
Cc: linux-usb-users@lists.sourceforge.net
Subject: USB API, ioctl's and libusb
Date: Wed, 26 Jan 2005 13:20:14 +0100 [thread overview]
Message-ID: <20050126122014.GF58@DervishD> (raw)
Hi everybody :)
I've been solving a USB problem related to a digital photo
camera, and I've noticed that 'libusb' uses a ioctl interface to the
USB kernel system. In fact it implements 'usb_control_msg()' using
ioctl's. On the other hand, the kernel itself (I'm talking about
2.4.29) provides an API in <linux/usb.h> that implements too
'usb_control_msg()' using URB's.
My question is: which interface should be used by user space
applications, <linux/usb.h> or ioctl's? Is the ioctl interface
deprecated in any way? In the "Programming guide for Linux USB Device
Drivers", located in http://usb.in.tum.de/usbdoc/, I can't find ioctl
interface references :?
Thanks a lot in advance :)
Raúl Núñez de Arenas Coronado
--
Linux Registered User 88736
http://www.dervishd.net & http://www.pleyades.net/
It's my PC and I'll cry if I want to...
next reply other threads:[~2005-01-26 12:19 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-26 12:20 DervishD [this message]
2005-01-26 13:40 ` USB API, ioctl's and libusb Oliver Neukum
2005-01-26 16:38 ` DervishD
2005-01-26 21:24 ` Johannes Erdfelt
2005-01-27 11:02 ` DervishD
2005-01-27 22:08 ` Johannes Erdfelt
2005-01-28 10:22 ` DervishD
2005-01-26 22:15 ` [Linux-usb-users] " Alan Stern
2005-01-26 23:57 ` DervishD
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