X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;ds=sidebyside;f=udev.8;h=d7999aadfd182a686e3c17a063c52530e1bdc8e6;hb=167a27e70f4010fdce561cff2ea1a07730aae28a;hp=9a597276c6fd00165c431523ca779bcb31f3733a;hpb=765cbd97599d943adc73d03f4c91bd7cf7ef7fab;p=elogind.git diff --git a/udev.8 b/udev.8 index 9a597276c..d7999aadf 100644 --- a/udev.8 +++ b/udev.8 @@ -3,9 +3,6 @@ udev \- Linux configurable dynamic device naming support .SH SYNOPSIS .BI udev " hotplug-subsystem" -.br -.B udev -.RI "[-q " query_type " -p " sysfs_path "] [-drVh]" .SH "DESCRIPTION" .B udev creates or removes device node files usually located in the /dev directory. @@ -29,40 +26,6 @@ maintains a database for devices present on the system. On device removal, .B udev queries its database for the name of the device file to be deleted. -.SH "OPTIONS" -.B udev -normally is called by -.B hotplug -with the subsystem as argument and various environment variables set. -.br -It may also called with the following options: -.TP -.B -V -Print the version information. -.TP -.B -r -Print the the -.B udev_root -directory. When used in conjunction with a query for the node name, the -.B udev_root -will be prepended. -.TP -.BI -q " query_type" -Query the database for specified value of a created device node. -Valid types are: -.BR name ", " symlink ", " owner " , " group " or " path. -.TP -.BI -p " sysfs_path" -Specify the sysfs path of the device to query. -.TP -.BI -n " name" -Specify the name of the node for the device to query. -.TP -.B -d -Dump the whole database. -.TP -.B -h -Print help text. .SH "CONFIGURATION" All .B udev @@ -72,7 +35,7 @@ lines, and lines beginning with a '#' will be ignored. .B udev expects its main configuration file at -.I /etc/udev/udev.conf. +.IR /etc/udev/udev.conf . The file consists of a set of variables and values that allow the user to override default udev values. The current set of variables that can be overridden in this file is: @@ -80,34 +43,46 @@ overridden in this file is: .B udev_root This is the where in the filesystem to place the device nodes. The default value for this is -.I /udev/ +.IR /udev/ . .TP .B udev_db The name and location of the udev database. The default value for this is -.I /udev/.udev.tdb +.IR /udev/.udev.tdb . .TP .B udev_rules This is the location of the udev rules file. The default value for this is -.I /etc/udev/udev.rules +.IR /etc/udev/udev.rules . +If a directory is specified, the whole directory is +scanned for files ending with +.I .rules +and all rule files are read in lexical order. .TP .B udev_permissions -This is the location of the udev permission file. The default value for this is -.I /etc/udev/udev.permissions +This is the location of the udev permission file. The default value for this is +.IR /etc/udev/udev.permissions . +If a directory is specified, the whole directory is scanned for files ending with +.I .permissions +and all permission files are read in lexical order. +.TP +.B udev_log +If you want udev to log some information to the syslog for every node created or +removed. The default value for this is +.IR yes . .TP .B default_mode This is the default mode for all nodes that have no explicit match in the permissions file. The default value for this is -.I 0666 +.IR 0666 . .TP .B default_owner This is the default owner for all nodes that have no explicit match in the permissions file. The default value for this is -.I root +.IR root . .TP .B default_group This is the default group for all nodes that have no explicit match in the permissions file. The default value for this is -.I root +.IR root . .br .P .RI "A sample " udev.conf " might look like this: @@ -119,12 +94,16 @@ udev_root="/udev/" # udev_db - The name and location of the udev database. udev_db="/udev/.udev.tdb" -# udev_rules - The name and location of the udev rules file -udev_rules="/etc/udev/udev.rules" +# udev_rules - The location of the directory where to look for files + which names ending with .rules +udev_rules="/etc/udev/" # udev_permissions - The name and location of the udev permission file udev_permissions="/etc/udev/udev.permissions" +# udev_log - set to "yes" if you want logging, else "no" +udev_log="yes" + # default_mode - set the default mode for all nodes that have no # explicit match in the permissions file default_mode="0666" @@ -173,7 +152,7 @@ Match the device number on the bus, like PCI bus id. .B PLACE Match the topological position on bus, like physical port of USB device .TP -.BI SYSFS_ filename +.BI SYSFS{ filename } Match sysfs device attribute like label, vendor, USB serial number, SCSI UUID or file system label. Up to 5 different sysfs files can be checked, with all of the values being required in order to match the rule. @@ -191,6 +170,13 @@ call. This key may used in any following rule after a .B PROGRAM call. .P +The +.B NAME +field given with the attribute +.BR NAME{ all_partitions } +will create all 15 partitions of a blockdevice. +This may be useful for removable media devices. +.P .RB "The " NAME " ," SYMLINK " and " PROGRAM fields support simple printf-like string substitution: .TP @@ -217,6 +203,13 @@ returned string. (This does not work within the .B PROGRAM field for the obvious reason.) +.br +A single part of the string, separated by the space character +my be selected by specifying the part number as a attribute: +.BI %c{ part } +.TP +.BI %s{ filename } +The content of a sysfs attribute. .TP .B %% The '%' char itself. @@ -228,10 +221,10 @@ The '%' char itself. BUS="scsi", PROGRAM="/sbin/scsi_id", RESULT="OEM 0815", NAME="disk1" # USB printer to be called lp_color -BUS="usb", SYSFS_serial="W09090207101241330", NAME="lp_color" +BUS="usb", SYSFS{serial}="W09090207101241330", NAME="lp_color" # SCSI disk with a specific vendor and model number is to be called boot -BUS="scsi", SYSFS_vendor="IBM", SYSFS_model="ST336", NAME="boot%n" +BUS="scsi", SYSFS{vendor}="IBM", SYSFS{model}="ST336", NAME="boot%n" # sound card with PCI bus id 00:0b.0 to be called dsp BUS="pci", ID="00:0b.0", NAME="dsp" @@ -243,7 +236,7 @@ BUS="usb", PLACE="2.3", NAME="mouse1" KERNEL="ttyUSB1", NAME="pda", SYMLINK="palmtop handheld" # multiple USB webcams with symlinks to be called webcam0, webcam1, ... -BUS="usb", SYSFS_model="XV3", NAME="video%n", SYMLINK="webcam%n" +BUS="usb", SYSFS{model}="XV3", NAME="video%n", SYMLINK="webcam%n" .fi .P Permissions and ownership for the created device files may specified at @@ -257,11 +250,6 @@ file. Every line lists a device name followed by owner, group and permission mode. All values are separated by colons. The name field may contain a pattern to apply the values to a whole class of devices. -.br -If -.B udev -was built using klibc or is used before the user database is accessible (e.g. -.BR initrd "(4)), only numeric owner and group values may be used." .sp .RI "A sample " udev.permissions " might look like this:" .sp @@ -296,6 +284,7 @@ following the '[' is a '!' then any character not enclosed is matched. .fi .LP .SH "SEE ALSO" +.BR udevinfo (8), .BR hotplug (8) .PP The