From: Stefan Herbrechtsmeier stefan.herbrechtsmeier@weidmueller.com
The u-boot hush shell doesn’t support the unset command to clear a variable and therefore an empty value ("c=") should be a valid value for the set_local_var function to clear the variable. This partial reverts commit aa722529635c ("common: cli_hush: avoid dead code") and only checks for a `=` in the string. Additionally explicit call the unset_local_var function to remove the variable if the value is empty.
Signed-off-by: Stefan Herbrechtsmeier stefan.herbrechtsmeier@weidmueller.com
---
common/cli_hush.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/common/cli_hush.c b/common/cli_hush.c index 1ad7a509df..c3f7dd12a0 100644 --- a/common/cli_hush.c +++ b/common/cli_hush.c @@ -2171,12 +2171,18 @@ int set_local_var(const char *s, int flg_export) * NAME=VALUE format. So the first order of business is to * split 's' on the '=' into 'name' and 'value' */ value = strchr(name, '='); - if (value == NULL || *(value + 1) == 0) { + if (value == NULL) { free(name); return -1; } *value++ = 0;
+ if (*value == 0) { + unset_local_var(name); + free(name); + return 0; + } + for(cur = top_vars; cur; cur = cur->next) { if(strcmp(cur->name, name)==0) break; -- 2.30.2
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