11

ベンダー 1004 の USB デバイスが接続されるたびに実行されるスクリプトがあります。私が使用している udev ルールは機能し、次のようになります。

SUBSYSTEM=="usb", ATTR{idVendor}=="1004", RUN+="/var/www/beta/trigger.php"

USBデバイスが接続されているときはいつでもこのスクリプトを実行し、ベンダーIDをパラメーターとして渡したいと思います。(そのため、スクリプトは実行する必要があるかどうかを決定できます。)

スクリプトでアクセスできるパラメーターを追加すると、これまでのところ機能しています。

SUBSYSTEM=="usb", RUN+="/var/www/beta/trigger.php myparam"

"myparam" を ATTR{idVendor} の値に置き換える方法を教えてください。あらゆる組み合わせを試しましたが、期待した結果が得られませんでした...

どうもありがとう！

4

2 に答える 2

24

RUNこの回答に追加するだけで、udev では引数をandに渡すこともできますPROGRAM。

udev の man ページから:

   The NAME, SYMLINK, PROGRAM, OWNER, GROUP, MODE and RUN fields support simple
   printf-like string substitutions. The RUN format chars gets applied after
   all rules have been processed, right before the program is executed. It
   allows the use of device properties set by earlier matching rules. For all
   other fields, substitutions are applied while the individual rule is being
   processed.

たとえば、次のようなルールを作成できます。

# Passes major, minor and serial number as parameters to script.
ACTION=="add", SUBSYSTEM=="usb", RUN+="/tmp/test.sh %M %m $attr{serial}"

利用可能な置換は次のとおりです。

    $kernel, %k
       The kernel name for this device.

   $number, %n
       The kernel number for this device. For example, ´sda3´ has kernel number
       of ´3´

   $devpath, %p
       The devpath of the device.

   $id, %b
       The name of the device matched while searching the devpath upwards for
       SUBSYSTEMS, KERNELS, DRIVERS and ATTRS.

   $driver
       The driver name of the device matched while searching the devpath
       upwards for SUBSYSTEMS, KERNELS, DRIVERS and ATTRS.

   $attr{file}, %s{file}
       The value of a sysfs attribute found at the device, where all keys of
       the rule have matched. If the matching device does not have such an
       attribute, follow the chain of parent devices and use the value of the
       first attribute that matches. If the attribute is a symlink, the last
       element of the symlink target is returned as the value.

   $env{key}, %E{key}
       A device property value.

   $major, %M
       The kernel major number for the device.

   $minor, %m
       The kernel minor number for the device.

   $result, %c
       The string returned by the external program requested with PROGRAM. A
       single part of the string, separated by a space character may be
       selected by specifying the part number as an attribute: %c{N}. If
       the number is followed by the ´+´ char this part plus all remaining
       parts of the result string are substituted: %c{N+}

   $parent, %P
       The node name of the parent device.

   $name
       The current name of the device node. If not changed by a rule, it
       is the name of the kernel device.

   $links
       The current list of symlinks, separated by a space character. The
       value is only set if an earlier rule assigned a value, or during a
       remove events.

   $root, %r
       The udev_root value.

   $sys, %S
       The sysfs mount point.

   $tempnode, %N
       The name of a created temporary device node to provide access to the
       device from a external program before the real node is created.

   %%
       The ´%´ character itself.

   $$
       The ´$´ character itself.
于 2013-04-08T16:36:53.560 に答える
10

udevとりわけ、使用できるいくつかの環境変数を設定しますID_VENDOR。その小さなスクリプトを試してください：

#!/bin/bash

echo "Called by udev" >> /tmp/testenv
env >> /tmp/testenv
echo "Vendor id is $ID_VENDOR" >> /tmp/testenv

それをルールに入れると、どれだけのものが設定されているかがわかります。

于 2012-10-10T12:15:49.520 に答える