On Tue, Apr 06, 2021 at 02:00:24PM +0200, Marek Vasut wrote:
In case exit is called in a script without parameter, the command returns -2 ; in case exit is called with a numerical parameter, the command returns -2 and lower. This leads to the following problem: => setenv foo 'echo bar ; exit 1' ; run foo ; echo $? bar 0 => setenv foo 'echo bar ; exit 0' ; run foo ; echo $? bar 0 => setenv foo 'echo bar ; exit -2' ; run foo ; echo $? bar 0 That is, no matter what the 'exit' command argument is, the return value is always 0 and so it is not possible to use script return value in subsequent tests.
Fix this and simplify the exit command such that if exit is called with no argument, the command returns 0, just like 'true' in cmd/test.c. In case the command is called with any argument that is positive integer, the argument is set as return value. => 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
Note that this does change ABI established in 2004 , although it is unclear whether that ABI was originally OK or not.
Fixes: c26e454dfc6 Signed-off-by: Marek Vasut marex@denx.de Cc: Pantelis Antoniou pantelis.antoniou@konsulko.com Cc: Tom Rini trini@konsulko.com
Applied to u-boot/master, thanks!