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system: require a timezone to be set

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Even though no timezone implicitly means UTC, systemd is not all that
happy when it does not have a timezone set. This is all fine on a RW
filesystem because systemd will create a symlink on its own (to
Etc/UTC), but not so much on a RO filesystem, causing all kind of
issues at boot time (up to the point that the system is unusable).

We fix that by requiring that the timezone is actually set. The check is
done by verifying that the timezone file is an actual file; if not set,
the test would find a directory and would thus fail.

Update the help entry accordingly.

Also fix indentation in tzdata.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Richard Braun <rbraun@sceen.net>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Martin Bark <martin@barkynet.com>
Cc: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Yann E. MORIN
2017-07-04 08:56:39 +02:00
committed by Thomas Petazzoni
parent 9e057861cb
commit e7e526e910
3 changed files with 12 additions and 20 deletions
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4
system/Config.in
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@@ -448,15 +448,13 @@ config BR2_TARGET_LOCALTIME
help
The time zone to install as the default local time, expressed as a
tzdata location, such as:
Etc/UTC (the default)
GMT
Europe/Paris
America/New_York
Pacific/Wallis
...
If empty, no local time will be set, and the dates will be
expressed in UTC.
endif # BR2_TARGET_TZ_INFO
config BR2_ROOTFS_USERS_TABLES