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| author | Gerlando Falauto <gerlando.falauto@keymile.com> | 2012-10-05 00:46:10 +0000 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2012-10-05 11:07:42 -0700 |
| commit | 7ac80551c447a3637b00bb1e2ad610e8bd13a570 (patch) | |
| tree | 4c0d152e5afa8eb5764b2ae86d107dcc2f4aaa0e /common/cmd_nvedit.c | |
| parent | 961c437b6cd68375d66c1f0cac9ade63115c0750 (diff) | |
| download | u-boot-imx-7ac80551c447a3637b00bb1e2ad610e8bd13a570.zip u-boot-imx-7ac80551c447a3637b00bb1e2ad610e8bd13a570.tar.gz u-boot-imx-7ac80551c447a3637b00bb1e2ad610e8bd13a570.tar.bz2 | |
env: fix crash using default -f -a
env default -a -f calls env_check_apply on all existing environment
variables with a NULL value for "newval" as a way of cleaning up.
This causes string manipulation functions to crash on most architectures.
So replace a NULL argument with an empty string.
Reported-By: Stefano Babic <sbabic@denx.de>
Signed-off-by: Gerlando Falauto <gerlando.falauto@keymile.com>
Tested-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'common/cmd_nvedit.c')
| -rw-r--r-- | common/cmd_nvedit.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c index 8ecc498..bb1d4ec 100644 --- a/common/cmd_nvedit.c +++ b/common/cmd_nvedit.c @@ -215,6 +215,9 @@ int env_check_apply(const char *name, const char *oldval, { int console = -1; + /* Default value for NULL to protect string-manipulating functions */ + newval = newval ? : ""; + /* Check for console redirection */ if (strcmp(name, "stdin") == 0) console = stdin; |