FreeBSD Manual Pages
scanbd(8) Scanner button daemon scanbd(8) NAME scanbd- Scanner button monitoring daemon SYNOPSIS Polling mode: scanbd [-c configfile ] [-f] [-d[debuglevel] ] Manager-mode The manager mode of scanbd that can be triggered by the -m option is not documented in this man-page but in scanbm(8) DESCRIPTION scanbd is a scanner button monitoring daemon that can trigger execution of scripts when a button on a scanner is pressed. scanbd (the scanner button daemon) opens and polls the scanner and therefore locks the device. So no other application can access the device directly (open the /dev/..., or via libusb, etc). To enable scanning from applications, we use scanbm as a "proxy" for saned to access the scanner from an application. scanbm listens for requests on the saned network port for scanning requests. If a scan request arrives, scanbm requests the scanbd daemon to release the scanner. Then it starts the real saned which scans and sends the data back to the requesting appli- cation. When the scanning is done and saned exits, the scanbm daemon tells scanbd to resume polling the scanner. scanbd polls the scanner regularly (the interval can be set in scanbd.conf ) and monitors for any scanner button to be pressed. If it detects a button press it triggers execution of the appropriate script as defined in scanbd.conf OPTIONS -c configfile --config=configfile Use configfile instead of the default /usr/lo- cal/etc/scanbd/scanbd.conf configuration file. -d[debuglevel] --debug[=debuglevel] turn debug mode on. If specified, set the debug level to debuglevel 1 = error 2 = warn 3 = info 4 - 7 = debug) -f --foreground Run scanbd in the foreground SIGNALS SIGUSR1 Stop polling and relase the scanner (used by scanbm ) SIGUSR1 Resume polling (used by scanbm ) SIGHUP Rescan for available devices (useful when no automatic detection is available (HAL, UDEV) ) MAIN SCANBD CONFIGURATION scanbd and scanbm are configured trough scanbd.conf (/usr/lo- cal/etc/scanbd/scanbd.conf). The distributed scanbd.conf contains a de- tailed explantion of the configuration options. The -c option can be used to override the default configuration file. SEE ALSO scanbm(8), sane(7), saned(8), sane-dll(5), sane-net(5) /usr/lo- cal/etc/scanbd/scanbd.conf http://scanbd.sourceforge.net AUTHOR Louis Lagendijk scanbd 1.92 02 Jan 2013 scanbd(8)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SIGNALS | MAIN SCANBD CONFIGURATION | SEE ALSO | AUTHOR
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