On Fri, Jan 24, 2003 at 09:02:40PM -0500, Jameson C. Burt wrote: > For "Device File System", Debian "devfsd" package, > how might I test that "devfsd" properly creates files in /dev? > > As a particular example, I work with the Debian "camserv" package, > so I added to devfsd's configuration file, > /etc/devfs/devfsd.conf > the line, > REGISTER ^v4l/video0$ CFUNCTION GLOBAL symlink v4l/video0 video0 > When starting "camserv", I get the not so specific error message, > (V4L) video_open: No such file or directory > Unfortunately, this message does not specify the problematic file, > but I get neither the device /dev/v4l/video0 nor /dev/video0. > So, with several possible sources for this error > (camserv, devfsd, devfsd.conf), > I would like to test that "devfsd" properly creates devices in /dev. > For example, I would like some testing-tool that my command line > *** some-testing-tool /dev/video0 > would induce "devfsd" to consider devfsd.conf, then create the following > device and link, > /dev/v4l/video0 > /dev/video0 --> v4l/video0
On my computer devfs is mounted on /dev. To test creation of devices for my webcam, all I did was modprobe pwc and pwcx and then plug webcam into usb port. I did not modify any configuration file in /etc/devfsd. A simple "ls -l /dev/v[4i]*" verifies that /dev/video0 symlink and /dev/v4l/video0 were created when camera was plugged in. There should also be entries in /var/log/messages when the devices register and unregister. > Such a testing-tool would hopefully induce "devfsd" to create > any specified device, whether concerning video, audio, or mass-storage. > *** Does anyone know of such a "devfsd" testing-tool? > > > PS: I would address this question to a devfs email-list, > but the author's email-list site, > http://oss.sgi.com/projects/devfs/archive > no longer exists, and I find no replacement. > -- Jerome
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