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package/systemd: fix "Timed out waiting for device /dev/console."

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Buildroot built with systemd fails to open a login prompt on the
serial port when /dev/console is specified as BR2_TARGET_GENERIC_GETTY_PORT
(which is its default value):

systemd[1]: dev-console.device: Job dev-console.device/start timed out.
systemd[1]: Timed out waiting for device /dev/console.
systemd[1]: Dependency failed for Serial Getty on console.
systemd[1]: serial-getty@console.service: Job serial-getty@console.service/start failed with result 'dependency'.
systemd[1]: dev-console.device: Job dev-console.device/start failed with result 'timeout'.
systemd[1]: Reached target Login Prompts.
systemd[1]: Reached target Multi-User System.

According to this issue on Github [1], serial-getty@.service should
not be instantiated on /dev/console, console-getty@.service should
be used instead. This stems from the fact that there should be no
dependency on /dev/console.

[1] https://github.com/systemd/systemd/issues/10914

Signed-off-by: Xavier Ruppen <xruppen@gmail.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
[Peter: drop SERVICE variable as suggested by Yann]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Xavier Ruppen 2019-03-04 20:25:47 +01:00 committed by Peter Korsgaard
parent d059acad12
commit 940e7deab0
1 changed files with 13 additions and 6 deletions
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19
package/systemd/systemd.mk
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@ -397,19 +397,26 @@ endef
ifneq ($(call qstrip,$(BR2_TARGET_GENERIC_GETTY_PORT)),) ifneq ($(call qstrip,$(BR2_TARGET_GENERIC_GETTY_PORT)),)
# systemd needs getty.service for VTs and serial-getty.service for serial ttys # systemd needs getty.service for VTs and serial-getty.service for serial ttys
# note that console-getty.service should be used on /dev/console as it should not have dependencies
# also patch the file to use the correct baud-rate, the default baudrate is 115200 so look for that # also patch the file to use the correct baud-rate, the default baudrate is 115200 so look for that
define SYSTEMD_INSTALL_SERVICE_TTY define SYSTEMD_INSTALL_SERVICE_TTY
if echo $(BR2_TARGET_GENERIC_GETTY_PORT) | egrep -q 'tty[0-9]*$$'; \ if [ $(BR2_TARGET_GENERIC_GETTY_PORT) = "console" ]; \
then \ then \
SERVICE="getty"; \ TARGET="console-getty.service"; \
LINK_NAME="console-getty.service"; \
elif echo $(BR2_TARGET_GENERIC_GETTY_PORT) | egrep -q 'tty[0-9]*$$'; \
then \
TARGET="getty@.service"; \
LINK_NAME="getty@$(call qstrip,$(BR2_TARGET_GENERIC_GETTY_PORT)).service"; \
else \ else \
SERVICE="serial-getty"; \ TARGET="serial-getty@.service"; \
LINK_NAME="serial-getty@$(call qstrip,$(BR2_TARGET_GENERIC_GETTY_PORT)).service"; \
fi; \ fi; \
ln -fs ../../../../lib/systemd/system/$${SERVICE}@.service \ ln -fs ../../../../lib/systemd/system/$${TARGET} \
$(TARGET_DIR)/etc/systemd/system/getty.target.wants/$${SERVICE}@$(BR2_TARGET_GENERIC_GETTY_PORT).service; \ $(TARGET_DIR)/etc/systemd/system/getty.target.wants/$${LINK_NAME}; \
if [ $(call qstrip,$(BR2_TARGET_GENERIC_GETTY_BAUDRATE)) -gt 0 ] ; \ if [ $(call qstrip,$(BR2_TARGET_GENERIC_GETTY_BAUDRATE)) -gt 0 ] ; \
then \ then \
$(SED) 's,115200,$(BR2_TARGET_GENERIC_GETTY_BAUDRATE),' $(TARGET_DIR)/lib/systemd/system/$${SERVICE}@.service; \ $(SED) 's,115200,$(BR2_TARGET_GENERIC_GETTY_BAUDRATE),' $(TARGET_DIR)/lib/systemd/system/$${TARGET}; \
fi fi
endef endef
endif endif