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20

I couldn’t get fw_setenv to work using stdin

echo test1=test1 > /var/run/test
root@octave-imx8mnevk:~# fw_setenv -s - < /var/run/test 
root@octave-imx8mnevk:~# fw_printenv | grep test1
root@octave-imx8mnevk:~# 
root@octave-imx8mnevk:~# fw_setenv -s /var/run/test
root@octave-imx8mnevk:~# fw_printenv | grep test1
test1=test1

I looked through the libubootenv code and can’t see how it processes - for stdin, in the u-boot version you can see

	if (strcmp(fname, "-") == 0)
		fp = stdin;

But I don’t see anything for libubootenv, if you run

fw_setenv -s -

it just returns, in fact if you specify a non existent file it returns

root@octave-imx8mnevk:~# fw_setenv -s /doesnt/exist
root@octave-imx8mnevk:~# echo $?
0

I’m using v0.2 of libubootenv, do I need a different version?