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https://github.com/AsahiLinux/u-boot
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721307eba0
Make sure the 'exit' command as well as 'exit $val' command exits
from environment scripts immediately and propagates return value
out of those scripts fully. That means the following behavior is
expected:
"
=> setenv foo 'echo bar ; exit 1' ; run foo ; echo $?
bar
1
=> setenv foo 'echo bar ; exit 0' ; run foo ; echo $?
bar
0
=> setenv foo 'echo bar ; exit -2' ; run foo ; echo $?
bar
0
"
As well as the followin behavior:
"
=> setenv foo 'echo bar ; exit 3 ; echo fail'; run foo; echo $?
bar
3
=> setenv foo 'echo bar ; exit 1 ; echo fail'; run foo; echo $?
bar
1
=> setenv foo 'echo bar ; exit 0 ; echo fail'; run foo; echo $?
bar
0
=> setenv foo 'echo bar ; exit -1 ; echo fail'; run foo; echo $?
bar
0
=> setenv foo 'echo bar ; exit -2 ; echo fail'; run foo; echo $?
bar
0
=> setenv foo 'echo bar ; exit ; echo fail'; run foo; echo $?
bar
0
"
Fixes: 8c4e3b79bd ("cmd: exit: Fix return value")
Reviewed-by: Hector Palacios <hector.palacios@digi.com>
Signed-off-by: Marek Vasut <marex@denx.de>
42 lines
869 B
ReStructuredText
42 lines
869 B
ReStructuredText
exit command
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============
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Synopsis
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--------
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::
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exit
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Description
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-----------
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The exit command terminates a script started via the run or source command.
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If scripts are nested, only the innermost script is left.
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::
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=> setenv inner 'echo entry inner; exit; echo inner done'
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=> setenv outer 'echo entry outer; run inner; echo outer done'
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=> run outer
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entry outer
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entry inner
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outer done
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=>
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When executed outside a script a warning is written. Following commands are not
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executed.
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::
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=> echo first; exit; echo last
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first
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exit not allowed from main input shell.
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=>
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Return value
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------------
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$? is default set to 0 (true). In case zero or positive integer parameter
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is passed to the command, the return value is the parameter value. In case
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negative integer parameter is passed to the command, the return value is 0.
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