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authorJeffrey Mann <mannj@embeddedplanet.com>2007-04-23 14:00:11 +0200
committerWolfgang Denk <wd@denx.de>2007-05-05 21:30:20 +0200
commit9ffd451afeb08e5be7ddae680487ec962b2bca25 (patch)
treebb472075299e88155d5384192c9cde337c38364e
parentebd0a0ae05a44769c4e27458ad4e9f3438250443 (diff)
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[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>
-rw-r--r--common/cmd_nvedit.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index 9834ba6..977ec5b 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[])