単純なudevルールはRUNを実行しません。

2024-06-26 • tag-icon

udev

単純なudevルールの設定に問題があります。

pi@raspberrypi:~ $ ls -l /home/pi/test.sh
-rwxr-xr-x 1 pi pi 37 Jun 25 15:20 /home/pi/test.sh  # executable
pi@raspberrypi:~ $ cat /home/pi/test.sh
#!/bin/sh
echo asdf >> /tmp/asdf.txt       # this works when run manually, even as root
pi@raspberrypi:~ $ cat /etc/udev/rules.d/10-usb-uart.rules
SUBSYSTEM=="tty", ACTION=="add", ATTRS{idVendor}=="0403", RUN+="/home/pi/test.sh"

私はATTRS{idVendor}=="0403"これから得ます：

pi@raspberrypi:~ $ sudo udevadm info -a /dev/ttyUSB0
 looking at device '/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.3/1-1.3:1.0/ttyUSB0/tty/ttyUSB0':
    KERNEL=="ttyUSB0"
    SUBSYSTEM=="tty"
    DRIVER==""

  looking at parent device '/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.3/1-1.3:1.0/ttyUSB0':
    KERNELS=="ttyUSB0"
    ...
    ATTRS{port_number}=="0"

  looking at parent device '/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.3/1-1.3:1.0':
    KERNELS=="1-1.3:1.0"
    SUBSYSTEMS=="usb"
    DRIVERS=="ftdi_sio"
    ATTRS{authorized}=="1"
    ...
    ATTRS{supports_autosuspend}=="1"

  looking at parent device '/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.3':
    KERNELS=="1-1.3"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ...
    ATTRS{devnum}=="8"
    ATTRS{devpath}=="1.3"
    ATTRS{devspec}=="  (null)"
    ATTRS{idProduct}=="6001"
    ATTRS{idVendor}=="0403"
    ATTRS{ltm_capable}=="no"
    ATTRS{manufacturer}=="FTDI"
    ...

ところで、USBデバイスを接続したり切断したりすると、ファイルに出力がありません。

udevadm test:

pi@raspberrypi:~ $ udevadm test $(udevadm info -q path -n /dev/ttyUSB0) 2>&1
calling: test
version 232
This program is for debugging only, it does not run any program
specified by a RUN key. It may show incorrect results, because
some values may be different, or not available at a simulation run.

=== trie on-disk ===
tool version:          232
file size:         8788458 bytes
header size             80 bytes
strings            1851626 bytes
nodes              6936752 bytes
Load module index
Found container virtualization none
timestamp of '/etc/systemd/network' changed
timestamp of '/lib/systemd/network' changed
Skipping overridden file: /lib/systemd/network/99-default.link.
Skipping empty file: /etc/systemd/network/99-default.link
Created link configuration context.
timestamp of '/etc/udev/rules.d' changed
Reading rules file: /lib/udev/rules.d/10-local-rpi.rules
Reading rules file: /etc/udev/rules.d/10-usb-uart.rules       # my file
Reading rules file: /lib/udev/rules.d/15-i2c-modprobe.rules
Reading rules file: /lib/udev/rules.d/40-scratch.rules
Reading rules file: /lib/udev/rules.d/40-usb_modeswitch.rules
Reading rules file: /lib/udev/rules.d/50-firmware.rules
Reading rules file: /lib/udev/rules.d/50-udev-default.rules
Reading rules file: /lib/udev/rules.d/55-dm.rules
Reading rules file: /lib/udev/rules.d/60-block.rules
Reading rules file: /lib/udev/rules.d/60-bluealsa.rules
Reading rules file: /lib/udev/rules.d/60-cdrom_id.rules
Reading rules file: /lib/udev/rules.d/60-crda.rules
Reading rules file: /lib/udev/rules.d/60-drm.rules
Reading rules file: /lib/udev/rules.d/60-evdev.rules
Reading rules file: /lib/udev/rules.d/60-fuse.rules
Reading rules file: /lib/udev/rules.d/60-i2c-tools.rules
Reading rules file: /lib/udev/rules.d/60-libgphoto2-6.rules
Reading rules file: /lib/udev/rules.d/60-persistent-alsa.rules
Reading rules file: /lib/udev/rules.d/60-persistent-input.rules
Reading rules file: /lib/udev/rules.d/60-persistent-storage-dm.rules
Reading rules file: /lib/udev/rules.d/60-persistent-storage-tape.rules
Reading rules file: /lib/udev/rules.d/60-persistent-storage.rules
Reading rules file: /lib/udev/rules.d/60-persistent-v4l.rules
Reading rules file: /lib/udev/rules.d/60-serial.rules
Reading rules file: /lib/udev/rules.d/60-triggerhappy.rules
Reading rules file: /lib/udev/rules.d/64-btrfs.rules
Reading rules file: /lib/udev/rules.d/64-xorg-xkb.rules
Reading rules file: /lib/udev/rules.d/65-libwacom.rules
Reading rules file: /lib/udev/rules.d/69-libmtp.rules
Reading rules file: /lib/udev/rules.d/70-debian-uaccess.rules
Reading rules file: /lib/udev/rules.d/70-mouse.rules
Reading rules file: /lib/udev/rules.d/70-power-switch.rules
Reading rules file: /lib/udev/rules.d/70-touchpad.rules
Reading rules file: /lib/udev/rules.d/70-uaccess.rules
Reading rules file: /lib/udev/rules.d/71-seat.rules
Reading rules file: /lib/udev/rules.d/73-seat-late.rules
Reading rules file: /lib/udev/rules.d/73-special-net-names.rules
Reading rules file: /lib/udev/rules.d/73-usb-net-by-mac.rules
Reading rules file: /lib/udev/rules.d/75-net-description.rules
Reading rules file: /lib/udev/rules.d/75-probe_mtd.rules
Reading rules file: /lib/udev/rules.d/78-sound-card.rules
Reading rules file: /lib/udev/rules.d/80-debian-compat.rules
Reading rules file: /lib/udev/rules.d/80-drivers.rules
Reading rules file: /lib/udev/rules.d/80-ifupdown.rules
Reading rules file: /lib/udev/rules.d/80-libinput-device-groups.rules
Reading rules file: /lib/udev/rules.d/80-net-setup-link.rules
Reading rules file: /lib/udev/rules.d/80-udisks2.rules
Reading rules file: /lib/udev/rules.d/85-hwclock.rules
Reading rules file: /lib/udev/rules.d/85-regulatory.rules
Reading rules file: /lib/udev/rules.d/90-alsa-restore.rules
Reading rules file: /lib/udev/rules.d/90-console-setup.rules
Reading rules file: /lib/udev/rules.d/90-libinput-model-quirks.rules
Reading rules file: /lib/udev/rules.d/90-pi-bluetooth.rules
Reading rules file: /lib/udev/rules.d/95-wedo.rules
Reading rules file: /lib/udev/rules.d/97-hid2hci.rules
Reading rules file: /etc/udev/rules.d/99-com.rules
Reading rules file: /lib/udev/rules.d/99-systemd.rules
rules contain 196608 bytes tokens (16384 * 12 bytes), 24141 bytes strings
17173 strings (139139 bytes), 14825 de-duplicated (117347 bytes), 2349 trie nodes used
RUN '/home/pi/test.sh' /etc/udev/rules.d/10-usb-uart.rules:1
PROGRAM 'usb_modeswitch --symlink-name /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.3/1-1.3:1.0/ttyUSB0/tty/ttyUSB0 0403 6001 ' /lib/udev/rules.d/40-usb_modeswitch.rules:10
starting 'usb_modeswitch --symlink-name /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.3/1-1.3:1.0/ttyUSB0/tty/ttyUSB0 0403 6001 '
Process 'usb_modeswitch --symlink-name /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.3/1-1.3:1.0/ttyUSB0/tty/ttyUSB0 0403 6001 ' succeeded.
GROUP 20 /lib/udev/rules.d/50-udev-default.rules:26
IMPORT builtin 'usb_id' /lib/udev/rules.d/60-serial.rules:8
/sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.3/1-1.3:1.0: if_class 255 protocol 0
IMPORT builtin 'hwdb' /lib/udev/rules.d/60-serial.rules:8
IMPORT builtin 'path_id' /lib/udev/rules.d/60-serial.rules:15
LINK 'serial/by-path/platform-3f980000.usb-usb-0:1.3:1.0-port0' /lib/udev/rules.d/60-serial.rules:17
IMPORT builtin skip 'usb_id' /lib/udev/rules.d/60-serial.rules:19
LINK 'serial/by-id/usb-FTDI_TTL232R-3V3_FT98J77X-if00-port0' /lib/udev/rules.d/60-serial.rules:24
handling device node '/dev/ttyUSB0', devnum=c188:0, mode=0660, uid=0, gid=20
preserve permissions /dev/ttyUSB0, 020660, uid=0, gid=20
preserve already existing symlink '/dev/char/188:0' to '../ttyUSB0'
found 'c188:0' claiming '/run/udev/links/\x2fserial\x2fby-id\x2fusb-FTDI_TTL232R-3V3_FT98J77X-if00-port0'
creating link '/dev/serial/by-id/usb-FTDI_TTL232R-3V3_FT98J77X-if00-port0' to '/dev/ttyUSB0'
preserve already existing symlink '/dev/serial/by-id/usb-FTDI_TTL232R-3V3_FT98J77X-if00-port0' to '../../ttyUSB0'
found 'c188:0' claiming '/run/udev/links/\x2fserial\x2fby-path\x2fplatform-3f980000.usb-usb-0:1.3:1.0-port0'
creating link '/dev/serial/by-path/platform-3f980000.usb-usb-0:1.3:1.0-port0' to '/dev/ttyUSB0'
preserve already existing symlink '/dev/serial/by-path/platform-3f980000.usb-usb-0:1.3:1.0-port0' to '../../ttyUSB0'
.ID_PORT=0
ACTION=add
DEVLINKS=/dev/serial/by-path/platform-3f980000.usb-usb-0:1.3:1.0-port0 /dev/serial/by-id/usb-FTDI_TTL232R-3V3_FT98J77X-if00-port0
DEVNAME=/dev/ttyUSB0
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.3/1-1.3:1.0/ttyUSB0/tty/ttyUSB0
ID_BUS=usb
ID_MODEL=TTL232R-3V3
ID_MODEL_ENC=TTL232R-3V3
ID_MODEL_FROM_DATABASE=FT232 Serial (UART) IC
ID_MODEL_ID=6001
ID_PATH=platform-3f980000.usb-usb-0:1.3:1.0
ID_PATH_TAG=platform-3f980000_usb-usb-0_1_3_1_0
ID_REVISION=0600
ID_SERIAL=FTDI_TTL232R-3V3_FT98J77X
ID_SERIAL_SHORT=FT98J77X
ID_TYPE=generic
ID_USB_DRIVER=ftdi_sio
ID_USB_INTERFACES=:ffffff:
ID_USB_INTERFACE_NUM=00
ID_VENDOR=FTDI
ID_VENDOR_ENC=FTDI
ID_VENDOR_FROM_DATABASE=Future Technology Devices International, Ltd
ID_VENDOR_ID=0403
MAJOR=188
MINOR=0
SUBSYSTEM=tty
TAGS=:systemd:
USEC_INITIALIZED=321019972
run: '/home/pi/test.sh'                                   # That's good!
Unload module index
Unloaded link configuration context.

最後に「run」が正しいです。ACTION、そしてID_VENDOR_ID。

したがって、「RUN」は問題ないようですが、出力はありません/tmp/asdf.txt。

udevadm monitor:

KERNEL[972.728210] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2 (usb)
KERNEL[972.734972] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0 (usb)
KERNEL[972.735197] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/ttyUSB0 (usb-serial)
KERNEL[972.736614] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/ttyUSB0/tty/ttyUSB0 (tty)
UDEV  [972.757922] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2 (usb)
UDEV  [972.765063] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0 (usb)
UDEV  [972.770564] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/ttyUSB0 (usb-serial)
UDEV  [972.798201] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/ttyUSB0/tty/ttyUSB0 (tty)

そしてudevadm monitor --property：

UDEV  [1280.772278] add      /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/ttyUSB0/tty/ttyUSB0 (tty)
.ID_PORT=0
ACTION=add
DEVLINKS=/dev/serial/by-path/platform-3f980000.usb-usb-0:1.2:1.0-port0 /dev/serial/by-id/usb-FTDI_TTL232R-3V3_FT98J77X-if00-port0
DEVNAME=/dev/ttyUSB0
DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/ttyUSB0/tty/ttyUSB0
ID_BUS=usb
ID_MODEL=TTL232R-3V3
ID_MODEL_ENC=TTL232R-3V3
ID_MODEL_FROM_DATABASE=FT232 Serial (UART) IC
ID_MODEL_ID=6001
ID_PATH=platform-3f980000.usb-usb-0:1.2:1.0
ID_PATH_TAG=platform-3f980000_usb-usb-0_1_2_1_0
ID_REVISION=0600
ID_SERIAL=FTDI_TTL232R-3V3_FT98J77X
ID_SERIAL_SHORT=FT98J77X
ID_TYPE=generic
ID_USB_DRIVER=ftdi_sio
ID_USB_INTERFACES=:ffffff:
ID_USB_INTERFACE_NUM=00
ID_VENDOR=FTDI
ID_VENDOR_ENC=FTDI
ID_VENDOR_FROM_DATABASE=Future Technology Devices International, Ltd
ID_VENDOR_ID=0403
MAJOR=188
MINOR=0
SEQNUM=3895
SUBSYSTEM=tty
TAGS=:systemd:
USEC_INITIALIZED=1280765243

ここには「RUN」はありません。

udevadm monitor --property出力は引き続き表示されます。ただし、「RUN」フィールドはありません。そこにいると期待すべきかわかりません。udevadm test見せてくれましたが、そうではなかったのでudevadm monitor --property驚きました。

名前をno avに10-usb-uart.rules変更してみました。98-usb-uart.rules

私は持っています追加してみてください , OPTIONS="last_rule"で始まるファイルに10-avはありません。

udevadm monitor --property今のようにディスプレイを期待できますか？runudevadm test

何が起こっているのかデバッグするために何ができますか？

ベストアンサー1

スクリプトの内容/home/pi/test.shが問題です。

がありますが、#!/bin/sh組み込みコマンドはecho失敗します。

それを作品に置き換えます/bin/echo：

$ cat /home/pi/test.sh
#!/bin/sh
/bin/echo asdf >> /tmp/asdf.txt

特に、インタプリタを指定した後に組み込み関数が機能しない理由が何であるかはわかりません。これは問題のようですが、shいいえbash、これも機能します。

$ cat /home/pi/test.sh
#!/bin/bash
echo asdf >> /tmp/asdf.txt

ちなみに、udevadm monitor --property表示されないようでRUN残念です。

ベストアンサー1

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