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script error

DISCUSSION Erwin Rol 3 participants 3 messages Jun 3, 2010 – Jun 9, 2010

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Erwin Rol

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#0 lore raw

Hallo,

i have a problem with running scripts. It seems that as soon a command in a script fails the whole script is terminated.

I am trying the following in /env/bin/init

echo "Loading env A"
mkdir /env_a/
loadenv /dev/biosdisk0.1 /env_a/
if [ -f /env_a/revision ]; then
. /env_a/revision
fi

The /dev/biosdisk0.1 is empty so the loadenv fails, and that also stops the /env/bin/init script, everything after the "fi" is never executed.

any ideas ?

- Erwin

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#2 lore raw
In reply to Erwin Rol

Hi Erwin,

Sorry for the delay.

Quoted 15 lines · Erwin Rol

Hallo,

i have a problem with running scripts. It seems that as soon a command in a script fails the whole script is terminated.

I am trying the following in /env/bin/init

echo "Loading env A"
mkdir /env_a/
loadenv /dev/biosdisk0.1 /env_a/
if [ -f /env_a/revision ]; then
. /env_a/revision
fi

Quoted 2 lines

The /dev/biosdisk0.1 is empty so the loadenv fails, and that also stops the /env/bin/init script, everything after the "fi" is never executed.

That is because of the wrong exit code of loadenv. In do_loadenv we have

return envfs_load(filename, dirname);

which returns negative numbers as errors. The shell interpretes negative numbers as return codes from commands as 'exit', so this should really be

return envfs_load(filename, dirname) ? 1 : 0;

Probably other commands have this bug aswell.

Sascha

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