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uboot-envtools: check for config prior to append

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In the rare event a pre-populated fw_env.config exists in the rootfs prior
to firstboot, calling fw_setenv after the system has initialised will
annihilate the devices environment due to two identical lines in
fw_env.config.

Check for existence prior to blind appendage.

Signed-off-by: Imran Khan <gururug@gmail.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
[daniel@makrotopia.org: fixed patch format, improved grep, cosmetics]
This commit is contained in:
Imran Khan
2019-12-17 05:59:28 -08:00
committed by Daniel Golle
parent f45a16dead
commit 27d69d2561
2 changed files with 2 additions and 2 deletions
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package/boot/uboot-envtools/files/uboot-envtools.sh
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@@ -31,6 +31,6 @@ ubootenv_add_app_config() {
config_get envsize "$1" envsize
config_get secsize "$1" secsize
config_get numsec "$1" numsec
echo "$dev $offset $envsize $secsize $numsec" >>/etc/fw_env.config
grep -q "^[[:space:]]*${dev}[[:space:]]*${offset}" /etc/fw_env.config || echo "$dev $offset $envsize $secsize $numsec" >>/etc/fw_env.config
}