diff options
Diffstat (limited to 'util-linux/mdev.c')
| -rw-r--r-- | util-linux/mdev.c | 88 |
1 files changed, 80 insertions, 8 deletions
diff --git a/util-linux/mdev.c b/util-linux/mdev.c index 7cabb1d..27b3557 100644 --- a/util-linux/mdev.c +++ b/util-linux/mdev.c @@ -8,19 +8,91 @@ * Licensed under GPLv2, see file LICENSE in this source tree. */ +//config:config MDEV +//config: bool "mdev" +//config: default y +//config: select PLATFORM_LINUX +//config: help +//config: mdev is a mini-udev implementation for dynamically creating device +//config: nodes in the /dev directory. +//config: +//config: For more information, please see docs/mdev.txt +//config: +//config:config FEATURE_MDEV_CONF +//config: bool "Support /etc/mdev.conf" +//config: default y +//config: depends on MDEV +//config: help +//config: Add support for the mdev config file to control ownership and +//config: permissions of the device nodes. +//config: +//config: For more information, please see docs/mdev.txt +//config: +//config:config FEATURE_MDEV_RENAME +//config: bool "Support subdirs/symlinks" +//config: default y +//config: depends on FEATURE_MDEV_CONF +//config: help +//config: Add support for renaming devices and creating symlinks. +//config: +//config: For more information, please see docs/mdev.txt +//config: +//config:config FEATURE_MDEV_RENAME_REGEXP +//config: bool "Support regular expressions substitutions when renaming device" +//config: default y +//config: depends on FEATURE_MDEV_RENAME +//config: help +//config: Add support for regular expressions substitutions when renaming +//config: device. +//config: +//config:config FEATURE_MDEV_EXEC +//config: bool "Support command execution at device addition/removal" +//config: default y +//config: depends on FEATURE_MDEV_CONF +//config: help +//config: This adds support for an optional field to /etc/mdev.conf for +//config: executing commands when devices are created/removed. +//config: +//config: For more information, please see docs/mdev.txt +//config: +//config:config FEATURE_MDEV_LOAD_FIRMWARE +//config: bool "Support loading of firmwares" +//config: default y +//config: depends on MDEV +//config: help +//config: Some devices need to load firmware before they can be usable. +//config: +//config: These devices will request userspace look up the files in +//config: /lib/firmware/ and if it exists, send it to the kernel for +//config: loading into the hardware. + +//applet:IF_MDEV(APPLET(mdev, BB_DIR_SBIN, BB_SUID_DROP)) + +//kbuild:lib-$(CONFIG_MDEV) += mdev.o + //usage:#define mdev_trivial_usage //usage: "[-s]" //usage:#define mdev_full_usage "\n\n" -//usage: " -s Scan /sys and populate /dev during system boot\n" +//usage: "mdev -s is to be run during boot to scan /sys and populate /dev.\n" //usage: "\n" -//usage: "It can be run by kernel as a hotplug helper. To activate it:\n" -//usage: " echo /sbin/mdev > /proc/sys/kernel/hotplug\n" +//usage: "Bare mdev is a kernel hotplug helper. To activate it:\n" +//usage: " echo /sbin/mdev >/proc/sys/kernel/hotplug\n" //usage: IF_FEATURE_MDEV_CONF( +//usage: "\n" //usage: "It uses /etc/mdev.conf with lines\n" -//usage: "[-]DEVNAME UID:GID PERM" -//usage: IF_FEATURE_MDEV_RENAME(" [>|=PATH]") +//usage: " [-]DEVNAME UID:GID PERM" +//usage: IF_FEATURE_MDEV_RENAME(" [>|=PATH]|[!]") //usage: IF_FEATURE_MDEV_EXEC(" [@|$|*PROG]") +//usage: "\n" +//usage: "where DEVNAME is device name regex, @major,minor[-minor2], or\n" +//usage: "environment variable regex. A common use of the latter is\n" +//usage: "to load modules for hotplugged devices:\n" +//usage: " $MODALIAS=.* 0:0 660 @modprobe \"$MODALIAS\"\n" //usage: ) +//usage: "\n" +//usage: "If /dev/mdev.seq file exists, mdev will wait for its value\n" +//usage: "to match $SEQNUM variable. This prevents plug/unplug races.\n" +//usage: "To activate this feature, create empty /dev/mdev.seq at boot." //usage: //usage:#define mdev_notes_usage "" //usage: IF_FEATURE_MDEV_CONFIG( @@ -64,9 +136,9 @@ * If /etc/mdev.conf exists, it may modify /dev/device_name's properties. * /etc/mdev.conf file format: * - * [-][subsystem/]device user:grp mode [>|=path] [@|$|*command args...] - * [-]@maj,min[-min2] user:grp mode [>|=path] [@|$|*command args...] - * [-]$envvar=val user:grp mode [>|=path] [@|$|*command args...] + * [-][subsystem/]device user:grp mode [>|=path]|[!] [@|$|*command args...] + * [-]@maj,min[-min2] user:grp mode [>|=path]|[!] [@|$|*command args...] + * [-]$envvar=val user:grp mode [>|=path]|[!] [@|$|*command args...] * * Leading minus in 1st field means "don't stop on this line", otherwise * search is stopped after the matching line is encountered. |