common, ubi: use positive return values for ubi check
The ubi check command is expected to not fail and just check whether
a volume exist or not. Currently, when a volume does not exist, the
command fails which leads to an error:
"exit not allowed from main input shell."
Use 1 to indicate that a volume does not exist. This allows to use
ubi check in an if statement, e.g.
if ubi check rootfs; then; echo "exists"; else; echo "not there"; fi
diff --git a/common/cmd_ubi.c b/common/cmd_ubi.c
index 6c85703..cbc10c5 100644
--- a/common/cmd_ubi.c
+++ b/common/cmd_ubi.c
@@ -114,7 +114,7 @@
return 0;
}
- return -EEXIST;
+ return 1;
}