From 9ffd451afeb08e5be7ddae680487ec962b2bca25 Mon Sep 17 00:00:00 2001
From: Jeffrey Mann <mannj@embeddedplanet.com>
Date: Mon, 23 Apr 2007 14:00:11 +0200
Subject: [PATCH] [patch] setenv(...) can delete environmentalvariables
update setenv() function so that entering a NULL value for the
variable's value will delete the environmental variable
Signed-off-by: Jeffrey Mann <mannj@embeddedplanet.com>
Acked-by: Stefan Roese <sr@denx.de>
---
common/cmd_nvedit.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index 9834ba65b7..977ec5bae9 100644
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -391,7 +391,10 @@ int _do_setenv (int flag, int argc, char *argv[])
void setenv (char *varname, char *varvalue)
{
char *argv[4] = { "setenv", varname, varvalue, NULL };
- _do_setenv (0, 3, argv);
+ if (varvalue == NULL)
+ _do_setenv (0, 2, argv);
+ else
+ _do_setenv (0, 3, argv);
}
int do_setenv ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
--
2.39.5